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mesa/src/gallium/drivers/radeonsi/si_state_shaders.cpp

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/*
* Copyright 2012 Advanced Micro Devices, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "ac_nir.h"
#include "ac_shader_util.h"
#include "compiler/nir/nir_serialize.h"
#include "nir/tgsi_to_nir.h"
#include "si_build_pm4.h"
#include "sid.h"
#include "util/crc32.h"
#include "util/disk_cache.h"
#include "util/hash_table.h"
#include "util/mesa-sha1.h"
#include "util/u_async_debug.h"
#include "util/u_memory.h"
#include "util/u_prim.h"
#include "tgsi/tgsi_from_mesa.h"
unsigned si_determine_wave_size(struct si_screen *sscreen, struct si_shader *shader)
{
/* There are a few uses that pass shader=NULL here, expecting the default compute wave size. */
struct si_shader_info *info = shader ? &shader->selector->info : NULL;
gl_shader_stage stage = shader ? shader->selector->stage : MESA_SHADER_COMPUTE;
if (sscreen->info.gfx_level < GFX10)
return 64;
/* Legacy GS only supports Wave64. */
if ((stage == MESA_SHADER_VERTEX && shader->key.ge.as_es && !shader->key.ge.as_ngg) ||
(stage == MESA_SHADER_TESS_EVAL && shader->key.ge.as_es && !shader->key.ge.as_ngg) ||
(stage == MESA_SHADER_GEOMETRY && !shader->key.ge.as_ngg))
return 64;
/* Small workgroups use Wave32 unconditionally. */
if (stage == MESA_SHADER_COMPUTE && info &&
!info->base.workgroup_size_variable &&
info->base.workgroup_size[0] *
info->base.workgroup_size[1] *
info->base.workgroup_size[2] <= 32)
return 32;
/* Debug flags. */
unsigned dbg_wave_size = 0;
if (sscreen->debug_flags &
(stage == MESA_SHADER_COMPUTE ? DBG(W32_CS) :
stage == MESA_SHADER_FRAGMENT ? DBG(W32_PS) | DBG(W32_PS_DISCARD) : DBG(W32_GE)))
dbg_wave_size = 32;
if (sscreen->debug_flags &
(stage == MESA_SHADER_COMPUTE ? DBG(W64_CS) :
stage == MESA_SHADER_FRAGMENT ? DBG(W64_PS) : DBG(W64_GE))) {
assert(!dbg_wave_size);
dbg_wave_size = 64;
}
/* Shader profiles. */
unsigned profile_wave_size = 0;
if (info && info->options & SI_PROFILE_WAVE32)
profile_wave_size = 32;
if (info && info->options & SI_PROFILE_WAVE64) {
assert(!profile_wave_size);
profile_wave_size = 64;
}
if (profile_wave_size) {
/* Only debug flags override shader profiles. */
if (dbg_wave_size)
return dbg_wave_size;
return profile_wave_size;
}
/* LLVM 13 has a bug that causes compile failures with discard in Wave32
* in some cases. Alpha test in Wave32 is luckily unaffected.
*/
if (stage == MESA_SHADER_FRAGMENT && info->base.fs.uses_discard &&
!(info && info->options & SI_PROFILE_IGNORE_LLVM13_DISCARD_BUG) &&
LLVM_VERSION_MAJOR == 13 && !(sscreen->debug_flags & DBG(W32_PS_DISCARD)))
return 64;
/* Debug flags except w32psdiscard don't override the discard bug workaround,
* but they override everything else.
*/
if (dbg_wave_size)
return dbg_wave_size;
/* Pixel shaders without interp instructions don't suffer from reduced interpolation
* performance in Wave32, so use Wave32. This helps Piano and Voloplosion.
*/
if (stage == MESA_SHADER_FRAGMENT && !info->num_inputs)
return 32;
/* There are a few very rare cases where VS is better with Wave32, and there are no known
* cases where Wave64 is better.
* Wave32 is disabled for GFX10 when culling is active as a workaround for #6457. I don't
* know why this helps.
*/
if (stage <= MESA_SHADER_GEOMETRY &&
!(sscreen->info.gfx_level == GFX10 && shader && shader->key.ge.opt.ngg_culling))
return 32;
/* TODO: Merged shaders must use the same wave size because the driver doesn't recompile
* individual shaders of merged shaders to match the wave size between them.
*/
bool merged_shader = stage <= MESA_SHADER_GEOMETRY && shader && !shader->is_gs_copy_shader &&
(shader->key.ge.as_ls || shader->key.ge.as_es ||
stage == MESA_SHADER_TESS_CTRL || stage == MESA_SHADER_GEOMETRY);
/* Divergent loops in Wave64 can end up having too many iterations in one half of the wave
* while the other half is idling but occupying VGPRs, preventing other waves from launching.
* Wave32 eliminates the idling half to allow the next wave to start.
*/
if (!merged_shader && info && info->has_divergent_loop)
return 32;
return 64;
}
/* SHADER_CACHE */
/**
* Return the IR key for the shader cache.
*/
void si_get_ir_cache_key(struct si_shader_selector *sel, bool ngg, bool es,
unsigned wave_size, unsigned char ir_sha1_cache_key[20])
{
struct blob blob = {};
unsigned ir_size;
void *ir_binary;
if (sel->nir_binary) {
ir_binary = sel->nir_binary;
ir_size = sel->nir_size;
} else {
assert(sel->nir);
blob_init(&blob);
/* Keep debug info if NIR debug prints are in use. */
nir_serialize(&blob, sel->nir, NIR_DEBUG(PRINT) == 0);
ir_binary = blob.data;
ir_size = blob.size;
}
/* These settings affect the compilation, but they are not derived
* from the input shader IR.
*/
unsigned shader_variant_flags = 0;
if (ngg)
shader_variant_flags |= 1 << 0;
if (sel->nir)
shader_variant_flags |= 1 << 1;
if (wave_size == 32)
shader_variant_flags |= 1 << 2;
if (sel->stage == MESA_SHADER_FRAGMENT &&
/* Derivatives imply helper invocations so check for needs_quad_helper_invocations. */
sel->info.base.fs.needs_quad_helper_invocations &&
sel->info.base.fs.uses_discard &&
sel->screen->debug_flags & DBG(FS_CORRECT_DERIVS_AFTER_KILL))
shader_variant_flags |= 1 << 3;
/* use_ngg_culling disables NGG passthrough for non-culling shaders to reduce context
* rolls, which can be changed with AMD_DEBUG=nonggc or AMD_DEBUG=nggc.
*/
if (sel->screen->use_ngg_culling)
shader_variant_flags |= 1 << 4;
if (sel->screen->record_llvm_ir)
shader_variant_flags |= 1 << 5;
/* bit gap */
if (sel->screen->options.no_infinite_interp)
shader_variant_flags |= 1 << 7;
if (sel->screen->options.clamp_div_by_zero)
shader_variant_flags |= 1 << 8;
if ((sel->stage == MESA_SHADER_VERTEX ||
sel->stage == MESA_SHADER_TESS_EVAL ||
sel->stage == MESA_SHADER_GEOMETRY) &&
!es &&
sel->screen->options.vrs2x2)
shader_variant_flags |= 1 << 10;
if (sel->screen->options.inline_uniforms)
shader_variant_flags |= 1 << 11;
struct mesa_sha1 ctx;
_mesa_sha1_init(&ctx);
_mesa_sha1_update(&ctx, &shader_variant_flags, 4);
_mesa_sha1_update(&ctx, ir_binary, ir_size);
_mesa_sha1_final(&ctx, ir_sha1_cache_key);
if (ir_binary == blob.data)
blob_finish(&blob);
}
/** Copy "data" to "ptr" and return the next dword following copied data. */
static uint32_t *write_data(uint32_t *ptr, const void *data, unsigned size)
{
/* data may be NULL if size == 0 */
if (size)
memcpy(ptr, data, size);
ptr += DIV_ROUND_UP(size, 4);
return ptr;
}
/** Read data from "ptr". Return the next dword following the data. */
static uint32_t *read_data(uint32_t *ptr, void *data, unsigned size)
{
memcpy(data, ptr, size);
ptr += DIV_ROUND_UP(size, 4);
return ptr;
}
/**
* Write the size as uint followed by the data. Return the next dword
* following the copied data.
*/
static uint32_t *write_chunk(uint32_t *ptr, const void *data, unsigned size)
{
*ptr++ = size;
return write_data(ptr, data, size);
}
/**
* Read the size as uint followed by the data. Return both via parameters.
* Return the next dword following the data.
*/
static uint32_t *read_chunk(uint32_t *ptr, void **data, unsigned *size)
{
*size = *ptr++;
assert(*data == NULL);
if (!*size)
return ptr;
*data = malloc(*size);
return read_data(ptr, *data, *size);
}
/**
* Return the shader binary in a buffer. The first 4 bytes contain its size
* as integer.
*/
static uint32_t *si_get_shader_binary(struct si_shader *shader)
{
/* There is always a size of data followed by the data itself. */
unsigned llvm_ir_size =
shader->binary.llvm_ir_string ? strlen(shader->binary.llvm_ir_string) + 1 : 0;
/* Refuse to allocate overly large buffers and guard against integer
* overflow. */
if (shader->binary.elf_size > UINT_MAX / 4 || llvm_ir_size > UINT_MAX / 4)
return NULL;
unsigned size = 4 + /* total size */
4 + /* CRC32 of the data below */
align(sizeof(shader->config), 4) + align(sizeof(shader->info), 4) + 4 +
align(shader->binary.elf_size, 4) + 4 + align(llvm_ir_size, 4);
uint32_t *buffer = (uint32_t*)CALLOC(1, size);
uint32_t *ptr = buffer;
if (!buffer)
return NULL;
*ptr++ = size;
ptr++; /* CRC32 is calculated at the end. */
ptr = write_data(ptr, &shader->config, sizeof(shader->config));
ptr = write_data(ptr, &shader->info, sizeof(shader->info));
ptr = write_chunk(ptr, shader->binary.elf_buffer, shader->binary.elf_size);
ptr = write_chunk(ptr, shader->binary.llvm_ir_string, llvm_ir_size);
assert((char *)ptr - (char *)buffer == (ptrdiff_t)size);
/* Compute CRC32. */
ptr = buffer;
ptr++;
*ptr = util_hash_crc32(ptr + 1, size - 8);
return buffer;
}
static bool si_load_shader_binary(struct si_shader *shader, void *binary)
{
uint32_t *ptr = (uint32_t *)binary;
uint32_t size = *ptr++;
uint32_t crc32 = *ptr++;
unsigned chunk_size;
unsigned elf_size;
if (util_hash_crc32(ptr, size - 8) != crc32) {
fprintf(stderr, "radeonsi: binary shader has invalid CRC32\n");
return false;
}
ptr = read_data(ptr, &shader->config, sizeof(shader->config));
ptr = read_data(ptr, &shader->info, sizeof(shader->info));
ptr = read_chunk(ptr, (void **)&shader->binary.elf_buffer, &elf_size);
shader->binary.elf_size = elf_size;
ptr = read_chunk(ptr, (void **)&shader->binary.llvm_ir_string, &chunk_size);
if (!shader->is_gs_copy_shader &&
shader->selector->stage == MESA_SHADER_GEOMETRY && !shader->key.ge.as_ngg) {
shader->gs_copy_shader = CALLOC_STRUCT(si_shader);
if (!shader->gs_copy_shader)
return false;
shader->gs_copy_shader->is_gs_copy_shader = true;
if (!si_load_shader_binary(shader->gs_copy_shader, (uint8_t*)binary + size)) {
FREE(shader->gs_copy_shader);
shader->gs_copy_shader = NULL;
return false;
}
util_queue_fence_init(&shader->gs_copy_shader->ready);
shader->gs_copy_shader->selector = shader->selector;
shader->gs_copy_shader->is_gs_copy_shader = true;
shader->gs_copy_shader->wave_size =
si_determine_wave_size(shader->selector->screen, shader->gs_copy_shader);
si_shader_binary_upload(shader->selector->screen, shader->gs_copy_shader, 0);
}
return true;
}
/**
* Insert a shader into the cache. It's assumed the shader is not in the cache.
* Use si_shader_cache_load_shader before calling this.
*/
void si_shader_cache_insert_shader(struct si_screen *sscreen, unsigned char ir_sha1_cache_key[20],
struct si_shader *shader, bool insert_into_disk_cache)
{
uint32_t *hw_binary;
struct hash_entry *entry;
uint8_t key[CACHE_KEY_SIZE];
bool memory_cache_full = sscreen->shader_cache_size >= sscreen->shader_cache_max_size;
if (!insert_into_disk_cache && memory_cache_full)
return;
entry = _mesa_hash_table_search(sscreen->shader_cache, ir_sha1_cache_key);
if (entry)
return; /* already added */
hw_binary = si_get_shader_binary(shader);
if (!hw_binary)
return;
unsigned size = *hw_binary;
if (shader->selector->stage == MESA_SHADER_GEOMETRY && !shader->key.ge.as_ngg) {
uint32_t *gs_copy_binary = si_get_shader_binary(shader->gs_copy_shader);
if (!gs_copy_binary) {
FREE(hw_binary);
return;
}
/* Combine both binaries. */
size += *gs_copy_binary;
uint32_t *combined_binary = (uint32_t*)MALLOC(size);
if (!combined_binary) {
FREE(hw_binary);
FREE(gs_copy_binary);
return;
}
memcpy(combined_binary, hw_binary, *hw_binary);
memcpy(combined_binary + *hw_binary / 4, gs_copy_binary, *gs_copy_binary);
FREE(hw_binary);
FREE(gs_copy_binary);
hw_binary = combined_binary;
}
if (!memory_cache_full) {
if (_mesa_hash_table_insert(sscreen->shader_cache,
mem_dup(ir_sha1_cache_key, 20),
hw_binary) == NULL) {
FREE(hw_binary);
return;
}
sscreen->shader_cache_size += size;
}
if (sscreen->disk_shader_cache && insert_into_disk_cache) {
disk_cache_compute_key(sscreen->disk_shader_cache, ir_sha1_cache_key, 20, key);
disk_cache_put(sscreen->disk_shader_cache, key, hw_binary, size, NULL);
}
if (memory_cache_full)
FREE(hw_binary);
}
bool si_shader_cache_load_shader(struct si_screen *sscreen, unsigned char ir_sha1_cache_key[20],
struct si_shader *shader)
{
struct hash_entry *entry = _mesa_hash_table_search(sscreen->shader_cache, ir_sha1_cache_key);
if (entry) {
if (si_load_shader_binary(shader, entry->data)) {
p_atomic_inc(&sscreen->num_memory_shader_cache_hits);
return true;
}
}
p_atomic_inc(&sscreen->num_memory_shader_cache_misses);
if (!sscreen->disk_shader_cache)
return false;
unsigned char sha1[CACHE_KEY_SIZE];
disk_cache_compute_key(sscreen->disk_shader_cache, ir_sha1_cache_key, 20, sha1);
size_t total_size;
uint32_t *buffer = (uint32_t*)disk_cache_get(sscreen->disk_shader_cache, sha1, &total_size);
if (buffer) {
unsigned size = *buffer;
unsigned gs_copy_binary_size = 0;
/* The GS copy shader binary is after the GS binary. */
if (shader->selector->stage == MESA_SHADER_GEOMETRY && !shader->key.ge.as_ngg)
gs_copy_binary_size = buffer[size / 4];
if (total_size >= sizeof(uint32_t) && size + gs_copy_binary_size == total_size) {
if (si_load_shader_binary(shader, buffer)) {
free(buffer);
si_shader_cache_insert_shader(sscreen, ir_sha1_cache_key, shader, false);
p_atomic_inc(&sscreen->num_disk_shader_cache_hits);
return true;
}
} else {
/* Something has gone wrong discard the item from the cache and
* rebuild/link from source.
*/
assert(!"Invalid radeonsi shader disk cache item!");
disk_cache_remove(sscreen->disk_shader_cache, sha1);
}
}
free(buffer);
p_atomic_inc(&sscreen->num_disk_shader_cache_misses);
return false;
}
static uint32_t si_shader_cache_key_hash(const void *key)
{
/* Take the first dword of SHA1. */
return *(uint32_t *)key;
}
static bool si_shader_cache_key_equals(const void *a, const void *b)
{
/* Compare SHA1s. */
return memcmp(a, b, 20) == 0;
}
static void si_destroy_shader_cache_entry(struct hash_entry *entry)
{
FREE((void *)entry->key);
FREE(entry->data);
}
bool si_init_shader_cache(struct si_screen *sscreen)
{
(void)simple_mtx_init(&sscreen->shader_cache_mutex, mtx_plain);
sscreen->shader_cache =
_mesa_hash_table_create(NULL, si_shader_cache_key_hash, si_shader_cache_key_equals);
sscreen->shader_cache_size = 0;
/* Maximum size: 64MB on 32 bits, 1GB else */
sscreen->shader_cache_max_size = ((sizeof(void *) == 4) ? 64 : 1024) * 1024 * 1024;
return sscreen->shader_cache != NULL;
}
void si_destroy_shader_cache(struct si_screen *sscreen)
{
if (sscreen->shader_cache)
_mesa_hash_table_destroy(sscreen->shader_cache, si_destroy_shader_cache_entry);
simple_mtx_destroy(&sscreen->shader_cache_mutex);
}
/* SHADER STATES */
bool si_shader_mem_ordered(struct si_shader *shader)
{
if (shader->selector->screen->info.gfx_level < GFX10)
return false;
/* Return true if both types of VMEM that return something are used. */
return shader->info.uses_vmem_sampler_or_bvh &&
(shader->info.uses_vmem_load_other ||
shader->config.scratch_bytes_per_wave);
}
static void si_set_tesseval_regs(struct si_screen *sscreen, const struct si_shader_selector *tes,
struct si_shader *shader)
{
const struct si_shader_info *info = &tes->info;
enum tess_primitive_mode tes_prim_mode = info->base.tess._primitive_mode;
unsigned tes_spacing = info->base.tess.spacing;
bool tes_vertex_order_cw = !info->base.tess.ccw;
bool tes_point_mode = info->base.tess.point_mode;
unsigned type, partitioning, topology, distribution_mode;
switch (tes_prim_mode) {
case TESS_PRIMITIVE_ISOLINES:
type = V_028B6C_TESS_ISOLINE;
break;
case TESS_PRIMITIVE_TRIANGLES:
type = V_028B6C_TESS_TRIANGLE;
break;
case TESS_PRIMITIVE_QUADS:
type = V_028B6C_TESS_QUAD;
break;
default:
assert(0);
return;
}
switch (tes_spacing) {
case TESS_SPACING_FRACTIONAL_ODD:
partitioning = V_028B6C_PART_FRAC_ODD;
break;
case TESS_SPACING_FRACTIONAL_EVEN:
partitioning = V_028B6C_PART_FRAC_EVEN;
break;
case TESS_SPACING_EQUAL:
partitioning = V_028B6C_PART_INTEGER;
break;
default:
assert(0);
return;
}
if (tes_point_mode)
topology = V_028B6C_OUTPUT_POINT;
else if (tes_prim_mode == TESS_PRIMITIVE_ISOLINES)
topology = V_028B6C_OUTPUT_LINE;
else if (tes_vertex_order_cw)
/* for some reason, this must be the other way around */
topology = V_028B6C_OUTPUT_TRIANGLE_CCW;
else
topology = V_028B6C_OUTPUT_TRIANGLE_CW;
if (sscreen->info.has_distributed_tess) {
if (sscreen->info.family == CHIP_FIJI || sscreen->info.family >= CHIP_POLARIS10)
distribution_mode = V_028B6C_TRAPEZOIDS;
else
distribution_mode = V_028B6C_DONUTS;
} else
distribution_mode = V_028B6C_NO_DIST;
shader->vgt_tf_param = S_028B6C_TYPE(type) | S_028B6C_PARTITIONING(partitioning) |
S_028B6C_TOPOLOGY(topology) |
S_028B6C_DISTRIBUTION_MODE(distribution_mode);
}
/* Polaris needs different VTX_REUSE_DEPTH settings depending on
* whether the "fractional odd" tessellation spacing is used.
*
* Possible VGT configurations and which state should set the register:
*
* Reg set in | VGT shader configuration | Value
* ------------------------------------------------------
* VS as VS | VS | 30
* VS as ES | ES -> GS -> VS | 30
* TES as VS | LS -> HS -> VS | 14 or 30
* TES as ES | LS -> HS -> ES -> GS -> VS | 14 or 30
*/
static void polaris_set_vgt_vertex_reuse(struct si_screen *sscreen, struct si_shader_selector *sel,
struct si_shader *shader)
{
if (sscreen->info.family < CHIP_POLARIS10 || sscreen->info.gfx_level >= GFX10)
return;
/* VS as VS, or VS as ES: */
if ((sel->stage == MESA_SHADER_VERTEX &&
(!shader->key.ge.as_ls && !shader->is_gs_copy_shader)) ||
/* TES as VS, or TES as ES: */
sel->stage == MESA_SHADER_TESS_EVAL) {
unsigned vtx_reuse_depth = 30;
if (sel->stage == MESA_SHADER_TESS_EVAL &&
sel->info.base.tess.spacing == TESS_SPACING_FRACTIONAL_ODD)
vtx_reuse_depth = 14;
shader->vgt_vertex_reuse_block_cntl = vtx_reuse_depth;
}
}
static struct si_pm4_state *si_get_shader_pm4_state(struct si_shader *shader)
{
si_pm4_clear_state(&shader->pm4);
shader->pm4.is_shader = true;
return &shader->pm4;
}
static unsigned si_get_num_vs_user_sgprs(struct si_shader *shader,
unsigned num_always_on_user_sgprs)
{
struct si_shader_selector *vs =
shader->previous_stage_sel ? shader->previous_stage_sel : shader->selector;
unsigned num_vbos_in_user_sgprs = vs->info.num_vbos_in_user_sgprs;
/* 1 SGPR is reserved for the vertex buffer pointer. */
assert(num_always_on_user_sgprs <= SI_SGPR_VS_VB_DESCRIPTOR_FIRST - 1);
if (num_vbos_in_user_sgprs)
return SI_SGPR_VS_VB_DESCRIPTOR_FIRST + num_vbos_in_user_sgprs * 4;
/* Add the pointer to VBO descriptors. */
return num_always_on_user_sgprs + 1;
}
/* Return VGPR_COMP_CNT for the API vertex shader. This can be hw LS, LSHS, ES, ESGS, VS. */
static unsigned si_get_vs_vgpr_comp_cnt(struct si_screen *sscreen, struct si_shader *shader,
bool legacy_vs_prim_id)
{
assert(shader->selector->stage == MESA_SHADER_VERTEX ||
(shader->previous_stage_sel && shader->previous_stage_sel->stage == MESA_SHADER_VERTEX));
/* GFX6-9 LS (VertexID, RelAutoIndex, InstanceID / StepRate0, InstanceID)
* GFX6-9 ES,VS (VertexID, InstanceID / StepRate0, VSPrimID, InstanceID)
* GFX10-11 LS (VertexID, RelAutoIndex, UserVGPR1, UserVGPR2 or InstanceID)
* GFX10-11 ES,VS (VertexID, UserVGPR1, UserVGPR2 or VSPrimID, UserVGPR3 or InstanceID)
*/
bool is_ls = shader->selector->stage == MESA_SHADER_TESS_CTRL || shader->key.ge.as_ls;
unsigned max = 0;
if (shader->info.uses_instanceid) {
if (sscreen->info.gfx_level >= GFX10)
max = MAX2(max, 3);
else if (is_ls)
max = MAX2(max, 2); /* use (InstanceID / StepRate0) because StepRate0 == 1 */
else
max = MAX2(max, 1); /* use (InstanceID / StepRate0) because StepRate0 == 1 */
}
if (legacy_vs_prim_id)
max = MAX2(max, 2); /* VSPrimID */
/* GFX11: We prefer to compute RelAutoIndex using (WaveID * WaveSize + ThreadID).
* Older chips didn't have WaveID in LS.
*/
if (is_ls && sscreen->info.gfx_level <= GFX10_3)
max = MAX2(max, 1); /* RelAutoIndex */
return max;
}
unsigned si_calc_inst_pref_size(struct si_shader *shader)
{
/* TODO: Disable for now. */
if (shader->selector->screen->info.gfx_level == GFX11)
return 0;
/* inst_pref_size is calculated in cache line size granularity */
assert(!(shader->bo->b.b.width0 & 0x7f));
return MIN2(shader->bo->b.b.width0, 8064) / 128;
}
static void si_shader_ls(struct si_screen *sscreen, struct si_shader *shader)
{
struct si_pm4_state *pm4;
uint64_t va;
assert(sscreen->info.gfx_level <= GFX8);
pm4 = si_get_shader_pm4_state(shader);
if (!pm4)
return;
va = shader->bo->gpu_address;
si_pm4_set_reg(pm4, R_00B520_SPI_SHADER_PGM_LO_LS, va >> 8);
shader->config.rsrc1 = S_00B528_VGPRS((shader->config.num_vgprs - 1) / 4) |
S_00B528_SGPRS((shader->config.num_sgprs - 1) / 8) |
S_00B528_VGPR_COMP_CNT(si_get_vs_vgpr_comp_cnt(sscreen, shader, false)) |
S_00B528_DX10_CLAMP(1) | S_00B528_FLOAT_MODE(shader->config.float_mode);
shader->config.rsrc2 =
S_00B52C_USER_SGPR(si_get_num_vs_user_sgprs(shader, SI_VS_NUM_USER_SGPR)) |
S_00B52C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0);
}
static void si_shader_hs(struct si_screen *sscreen, struct si_shader *shader)
{
struct si_pm4_state *pm4;
uint64_t va;
pm4 = si_get_shader_pm4_state(shader);
if (!pm4)
return;
va = shader->bo->gpu_address;
if (sscreen->info.gfx_level >= GFX9) {
if (sscreen->info.gfx_level >= GFX11) {
ac_set_reg_cu_en(pm4, R_00B404_SPI_SHADER_PGM_RSRC4_HS,
S_00B404_INST_PREF_SIZE(si_calc_inst_pref_size(shader)) |
S_00B404_CU_EN(0xffff),
C_00B404_CU_EN, 16, &sscreen->info,
(void (*)(void*, unsigned, uint32_t))si_pm4_set_reg_idx3);
}
if (sscreen->info.gfx_level >= GFX10) {
si_pm4_set_reg(pm4, R_00B520_SPI_SHADER_PGM_LO_LS, va >> 8);
} else {
si_pm4_set_reg(pm4, R_00B410_SPI_SHADER_PGM_LO_LS, va >> 8);
}
unsigned num_user_sgprs = si_get_num_vs_user_sgprs(shader, GFX9_TCS_NUM_USER_SGPR);
shader->config.rsrc2 = S_00B42C_USER_SGPR(num_user_sgprs) |
S_00B42C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0);
if (sscreen->info.gfx_level >= GFX10)
shader->config.rsrc2 |= S_00B42C_USER_SGPR_MSB_GFX10(num_user_sgprs >> 5);
else
shader->config.rsrc2 |= S_00B42C_USER_SGPR_MSB_GFX9(num_user_sgprs >> 5);
} else {
si_pm4_set_reg(pm4, R_00B420_SPI_SHADER_PGM_LO_HS, va >> 8);
si_pm4_set_reg(pm4, R_00B424_SPI_SHADER_PGM_HI_HS,
S_00B424_MEM_BASE(sscreen->info.address32_hi >> 8));
shader->config.rsrc2 = S_00B42C_USER_SGPR(GFX6_TCS_NUM_USER_SGPR) | S_00B42C_OC_LDS_EN(1) |
S_00B42C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0);
}
si_pm4_set_reg(
pm4, R_00B428_SPI_SHADER_PGM_RSRC1_HS,
S_00B428_VGPRS((shader->config.num_vgprs - 1) / (shader->wave_size == 32 ? 8 : 4)) |
(sscreen->info.gfx_level <= GFX9 ? S_00B428_SGPRS((shader->config.num_sgprs - 1) / 8)
: 0) |
S_00B428_DX10_CLAMP(1) | S_00B428_MEM_ORDERED(si_shader_mem_ordered(shader)) |
S_00B428_WGP_MODE(sscreen->info.gfx_level >= GFX10) |
S_00B428_FLOAT_MODE(shader->config.float_mode) |
S_00B428_LS_VGPR_COMP_CNT(sscreen->info.gfx_level >= GFX9
? si_get_vs_vgpr_comp_cnt(sscreen, shader, false)
: 0));
if (sscreen->info.gfx_level <= GFX8) {
si_pm4_set_reg(pm4, R_00B42C_SPI_SHADER_PGM_RSRC2_HS, shader->config.rsrc2);
}
}
static void si_emit_shader_es(struct si_context *sctx)
{
struct si_shader *shader = sctx->queued.named.es;
if (!shader)
return;
radeon_begin(&sctx->gfx_cs);
radeon_opt_set_context_reg(sctx, R_028AAC_VGT_ESGS_RING_ITEMSIZE,
SI_TRACKED_VGT_ESGS_RING_ITEMSIZE,
shader->selector->info.esgs_itemsize / 4);
if (shader->selector->stage == MESA_SHADER_TESS_EVAL)
radeon_opt_set_context_reg(sctx, R_028B6C_VGT_TF_PARAM, SI_TRACKED_VGT_TF_PARAM,
shader->vgt_tf_param);
if (shader->vgt_vertex_reuse_block_cntl)
radeon_opt_set_context_reg(sctx, R_028C58_VGT_VERTEX_REUSE_BLOCK_CNTL,
SI_TRACKED_VGT_VERTEX_REUSE_BLOCK_CNTL,
shader->vgt_vertex_reuse_block_cntl);
radeon_end_update_context_roll(sctx);
}
static void si_shader_es(struct si_screen *sscreen, struct si_shader *shader)
{
struct si_pm4_state *pm4;
unsigned num_user_sgprs;
unsigned vgpr_comp_cnt;
uint64_t va;
unsigned oc_lds_en;
assert(sscreen->info.gfx_level <= GFX8);
pm4 = si_get_shader_pm4_state(shader);
if (!pm4)
return;
pm4->atom.emit = si_emit_shader_es;
va = shader->bo->gpu_address;
if (shader->selector->stage == MESA_SHADER_VERTEX) {
vgpr_comp_cnt = si_get_vs_vgpr_comp_cnt(sscreen, shader, false);
num_user_sgprs = si_get_num_vs_user_sgprs(shader, SI_VS_NUM_USER_SGPR);
} else if (shader->selector->stage == MESA_SHADER_TESS_EVAL) {
vgpr_comp_cnt = shader->selector->info.uses_primid ? 3 : 2;
num_user_sgprs = SI_TES_NUM_USER_SGPR;
} else
unreachable("invalid shader selector type");
oc_lds_en = shader->selector->stage == MESA_SHADER_TESS_EVAL ? 1 : 0;
si_pm4_set_reg(pm4, R_00B320_SPI_SHADER_PGM_LO_ES, va >> 8);
si_pm4_set_reg(pm4, R_00B324_SPI_SHADER_PGM_HI_ES,
S_00B324_MEM_BASE(sscreen->info.address32_hi >> 8));
si_pm4_set_reg(pm4, R_00B328_SPI_SHADER_PGM_RSRC1_ES,
S_00B328_VGPRS((shader->config.num_vgprs - 1) / 4) |
S_00B328_SGPRS((shader->config.num_sgprs - 1) / 8) |
S_00B328_VGPR_COMP_CNT(vgpr_comp_cnt) | S_00B328_DX10_CLAMP(1) |
S_00B328_FLOAT_MODE(shader->config.float_mode));
si_pm4_set_reg(pm4, R_00B32C_SPI_SHADER_PGM_RSRC2_ES,
S_00B32C_USER_SGPR(num_user_sgprs) | S_00B32C_OC_LDS_EN(oc_lds_en) |
S_00B32C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0));
if (shader->selector->stage == MESA_SHADER_TESS_EVAL)
si_set_tesseval_regs(sscreen, shader->selector, shader);
polaris_set_vgt_vertex_reuse(sscreen, shader->selector, shader);
}
void gfx9_get_gs_info(struct si_shader_selector *es, struct si_shader_selector *gs,
struct gfx9_gs_info *out)
{
unsigned gs_num_invocations = MAX2(gs->info.base.gs.invocations, 1);
unsigned input_prim = gs->info.base.gs.input_primitive;
bool uses_adjacency =
input_prim >= PIPE_PRIM_LINES_ADJACENCY && input_prim <= PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY;
/* All these are in dwords: */
/* We can't allow using the whole LDS, because GS waves compete with
* other shader stages for LDS space. */
const unsigned max_lds_size = 8 * 1024;
const unsigned esgs_itemsize = es->info.esgs_itemsize / 4;
unsigned esgs_lds_size;
/* All these are per subgroup: */
const unsigned max_out_prims = 32 * 1024;
const unsigned max_es_verts = 255;
const unsigned ideal_gs_prims = 64;
unsigned max_gs_prims, gs_prims;
unsigned min_es_verts, es_verts, worst_case_es_verts;
if (uses_adjacency || gs_num_invocations > 1)
max_gs_prims = 127 / gs_num_invocations;
else
max_gs_prims = 255;
/* MAX_PRIMS_PER_SUBGROUP = gs_prims * max_vert_out * gs_invocations.
* Make sure we don't go over the maximum value.
*/
if (gs->info.base.gs.vertices_out > 0) {
max_gs_prims =
MIN2(max_gs_prims, max_out_prims / (gs->info.base.gs.vertices_out * gs_num_invocations));
}
assert(max_gs_prims > 0);
/* If the primitive has adjacency, halve the number of vertices
* that will be reused in multiple primitives.
*/
min_es_verts = gs->info.gs_input_verts_per_prim / (uses_adjacency ? 2 : 1);
gs_prims = MIN2(ideal_gs_prims, max_gs_prims);
worst_case_es_verts = MIN2(min_es_verts * gs_prims, max_es_verts);
/* Compute ESGS LDS size based on the worst case number of ES vertices
* needed to create the target number of GS prims per subgroup.
*/
esgs_lds_size = esgs_itemsize * worst_case_es_verts;
/* If total LDS usage is too big, refactor partitions based on ratio
* of ESGS item sizes.
*/
if (esgs_lds_size > max_lds_size) {
/* Our target GS Prims Per Subgroup was too large. Calculate
* the maximum number of GS Prims Per Subgroup that will fit
* into LDS, capped by the maximum that the hardware can support.
*/
gs_prims = MIN2((max_lds_size / (esgs_itemsize * min_es_verts)), max_gs_prims);
assert(gs_prims > 0);
worst_case_es_verts = MIN2(min_es_verts * gs_prims, max_es_verts);
esgs_lds_size = esgs_itemsize * worst_case_es_verts;
assert(esgs_lds_size <= max_lds_size);
}
/* Now calculate remaining ESGS information. */
if (esgs_lds_size)
es_verts = MIN2(esgs_lds_size / esgs_itemsize, max_es_verts);
else
es_verts = max_es_verts;
/* Vertices for adjacency primitives are not always reused, so restore
* it for ES_VERTS_PER_SUBGRP.
*/
min_es_verts = gs->info.gs_input_verts_per_prim;
/* For normal primitives, the VGT only checks if they are past the ES
* verts per subgroup after allocating a full GS primitive and if they
* are, kick off a new subgroup. But if those additional ES verts are
* unique (e.g. not reused) we need to make sure there is enough LDS
* space to account for those ES verts beyond ES_VERTS_PER_SUBGRP.
*/
es_verts -= min_es_verts - 1;
out->es_verts_per_subgroup = es_verts;
out->gs_prims_per_subgroup = gs_prims;
out->gs_inst_prims_in_subgroup = gs_prims * gs_num_invocations;
out->max_prims_per_subgroup = out->gs_inst_prims_in_subgroup * gs->info.base.gs.vertices_out;
out->esgs_ring_size = esgs_lds_size;
assert(out->max_prims_per_subgroup <= max_out_prims);
}
static void si_emit_shader_gs(struct si_context *sctx)
{
struct si_shader *shader = sctx->queued.named.gs;
if (!shader)
return;
radeon_begin(&sctx->gfx_cs);
/* R_028A60_VGT_GSVS_RING_OFFSET_1, R_028A64_VGT_GSVS_RING_OFFSET_2
* R_028A68_VGT_GSVS_RING_OFFSET_3 */
radeon_opt_set_context_reg3(
sctx, R_028A60_VGT_GSVS_RING_OFFSET_1, SI_TRACKED_VGT_GSVS_RING_OFFSET_1,
shader->ctx_reg.gs.vgt_gsvs_ring_offset_1, shader->ctx_reg.gs.vgt_gsvs_ring_offset_2,
shader->ctx_reg.gs.vgt_gsvs_ring_offset_3);
/* R_028AB0_VGT_GSVS_RING_ITEMSIZE */
radeon_opt_set_context_reg(sctx, R_028AB0_VGT_GSVS_RING_ITEMSIZE,
SI_TRACKED_VGT_GSVS_RING_ITEMSIZE,
shader->ctx_reg.gs.vgt_gsvs_ring_itemsize);
/* R_028B38_VGT_GS_MAX_VERT_OUT */
radeon_opt_set_context_reg(sctx, R_028B38_VGT_GS_MAX_VERT_OUT, SI_TRACKED_VGT_GS_MAX_VERT_OUT,
shader->ctx_reg.gs.vgt_gs_max_vert_out);
/* R_028B5C_VGT_GS_VERT_ITEMSIZE, R_028B60_VGT_GS_VERT_ITEMSIZE_1
* R_028B64_VGT_GS_VERT_ITEMSIZE_2, R_028B68_VGT_GS_VERT_ITEMSIZE_3 */
radeon_opt_set_context_reg4(
sctx, R_028B5C_VGT_GS_VERT_ITEMSIZE, SI_TRACKED_VGT_GS_VERT_ITEMSIZE,
shader->ctx_reg.gs.vgt_gs_vert_itemsize, shader->ctx_reg.gs.vgt_gs_vert_itemsize_1,
shader->ctx_reg.gs.vgt_gs_vert_itemsize_2, shader->ctx_reg.gs.vgt_gs_vert_itemsize_3);
/* R_028B90_VGT_GS_INSTANCE_CNT */
radeon_opt_set_context_reg(sctx, R_028B90_VGT_GS_INSTANCE_CNT, SI_TRACKED_VGT_GS_INSTANCE_CNT,
shader->ctx_reg.gs.vgt_gs_instance_cnt);
if (sctx->gfx_level >= GFX9) {
/* R_028A44_VGT_GS_ONCHIP_CNTL */
radeon_opt_set_context_reg(sctx, R_028A44_VGT_GS_ONCHIP_CNTL, SI_TRACKED_VGT_GS_ONCHIP_CNTL,
shader->ctx_reg.gs.vgt_gs_onchip_cntl);
/* R_028A94_VGT_GS_MAX_PRIMS_PER_SUBGROUP */
radeon_opt_set_context_reg(sctx, R_028A94_VGT_GS_MAX_PRIMS_PER_SUBGROUP,
SI_TRACKED_VGT_GS_MAX_PRIMS_PER_SUBGROUP,
shader->ctx_reg.gs.vgt_gs_max_prims_per_subgroup);
/* R_028AAC_VGT_ESGS_RING_ITEMSIZE */
radeon_opt_set_context_reg(sctx, R_028AAC_VGT_ESGS_RING_ITEMSIZE,
SI_TRACKED_VGT_ESGS_RING_ITEMSIZE,
shader->ctx_reg.gs.vgt_esgs_ring_itemsize);
if (shader->key.ge.part.gs.es->stage == MESA_SHADER_TESS_EVAL)
radeon_opt_set_context_reg(sctx, R_028B6C_VGT_TF_PARAM, SI_TRACKED_VGT_TF_PARAM,
shader->vgt_tf_param);
if (shader->vgt_vertex_reuse_block_cntl)
radeon_opt_set_context_reg(sctx, R_028C58_VGT_VERTEX_REUSE_BLOCK_CNTL,
SI_TRACKED_VGT_VERTEX_REUSE_BLOCK_CNTL,
shader->vgt_vertex_reuse_block_cntl);
}
radeon_end_update_context_roll(sctx);
/* These don't cause any context rolls. */
if (sctx->screen->info.spi_cu_en_has_effect) {
if (sctx->gfx_level >= GFX7) {
ac_set_reg_cu_en(&sctx->gfx_cs, R_00B21C_SPI_SHADER_PGM_RSRC3_GS,
shader->ctx_reg.gs.spi_shader_pgm_rsrc3_gs,
C_00B21C_CU_EN, 0, &sctx->screen->info,
(void (*)(void*, unsigned, uint32_t))
(sctx->gfx_level >= GFX10 ? radeon_set_sh_reg_idx3_func : radeon_set_sh_reg_func));
sctx->tracked_regs.reg_saved &= ~BITFIELD64_BIT(SI_TRACKED_SPI_SHADER_PGM_RSRC3_GS);
}
if (sctx->gfx_level >= GFX10) {
ac_set_reg_cu_en(&sctx->gfx_cs, R_00B204_SPI_SHADER_PGM_RSRC4_GS,
shader->ctx_reg.gs.spi_shader_pgm_rsrc4_gs,
C_00B204_CU_EN_GFX10, 16, &sctx->screen->info,
(void (*)(void*, unsigned, uint32_t))
(sctx->gfx_level >= GFX10 ? radeon_set_sh_reg_idx3_func : radeon_set_sh_reg_func));
sctx->tracked_regs.reg_saved &= ~BITFIELD64_BIT(SI_TRACKED_SPI_SHADER_PGM_RSRC4_GS);
}
} else {
radeon_begin_again(&sctx->gfx_cs);
if (sctx->gfx_level >= GFX7) {
radeon_opt_set_sh_reg_idx3(sctx, R_00B21C_SPI_SHADER_PGM_RSRC3_GS,
SI_TRACKED_SPI_SHADER_PGM_RSRC3_GS,
shader->ctx_reg.gs.spi_shader_pgm_rsrc3_gs);
}
if (sctx->gfx_level >= GFX10) {
radeon_opt_set_sh_reg_idx3(sctx, R_00B204_SPI_SHADER_PGM_RSRC4_GS,
SI_TRACKED_SPI_SHADER_PGM_RSRC4_GS,
shader->ctx_reg.gs.spi_shader_pgm_rsrc4_gs);
}
radeon_end();
}
}
static void si_shader_gs(struct si_screen *sscreen, struct si_shader *shader)
{
struct si_shader_selector *sel = shader->selector;
const ubyte *num_components = sel->info.num_stream_output_components;
unsigned gs_num_invocations = sel->info.base.gs.invocations;
struct si_pm4_state *pm4;
uint64_t va;
unsigned max_stream = util_last_bit(sel->info.base.gs.active_stream_mask);
unsigned offset;
assert(sscreen->info.gfx_level < GFX11); /* gfx11 doesn't have the legacy pipeline */
pm4 = si_get_shader_pm4_state(shader);
if (!pm4)
return;
pm4->atom.emit = si_emit_shader_gs;
offset = num_components[0] * sel->info.base.gs.vertices_out;
shader->ctx_reg.gs.vgt_gsvs_ring_offset_1 = offset;
if (max_stream >= 2)
offset += num_components[1] * sel->info.base.gs.vertices_out;
shader->ctx_reg.gs.vgt_gsvs_ring_offset_2 = offset;
if (max_stream >= 3)
offset += num_components[2] * sel->info.base.gs.vertices_out;
shader->ctx_reg.gs.vgt_gsvs_ring_offset_3 = offset;
if (max_stream >= 4)
offset += num_components[3] * sel->info.base.gs.vertices_out;
shader->ctx_reg.gs.vgt_gsvs_ring_itemsize = offset;
/* The GSVS_RING_ITEMSIZE register takes 15 bits */
assert(offset < (1 << 15));
shader->ctx_reg.gs.vgt_gs_max_vert_out = sel->info.base.gs.vertices_out;
shader->ctx_reg.gs.vgt_gs_vert_itemsize = num_components[0];
shader->ctx_reg.gs.vgt_gs_vert_itemsize_1 = (max_stream >= 2) ? num_components[1] : 0;
shader->ctx_reg.gs.vgt_gs_vert_itemsize_2 = (max_stream >= 3) ? num_components[2] : 0;
shader->ctx_reg.gs.vgt_gs_vert_itemsize_3 = (max_stream >= 4) ? num_components[3] : 0;
shader->ctx_reg.gs.vgt_gs_instance_cnt =
S_028B90_CNT(MIN2(gs_num_invocations, 127)) | S_028B90_ENABLE(gs_num_invocations > 0);
/* Copy over fields from the GS copy shader to make them easily accessible from GS. */
shader->pa_cl_vs_out_cntl = shader->gs_copy_shader->pa_cl_vs_out_cntl;
va = shader->bo->gpu_address;
if (sscreen->info.gfx_level >= GFX9) {
unsigned input_prim = sel->info.base.gs.input_primitive;
gl_shader_stage es_stage = shader->key.ge.part.gs.es->stage;
unsigned es_vgpr_comp_cnt, gs_vgpr_comp_cnt;
if (es_stage == MESA_SHADER_VERTEX) {
es_vgpr_comp_cnt = si_get_vs_vgpr_comp_cnt(sscreen, shader, false);
} else if (es_stage == MESA_SHADER_TESS_EVAL)
es_vgpr_comp_cnt = shader->key.ge.part.gs.es->info.uses_primid ? 3 : 2;
else
unreachable("invalid shader selector type");
/* If offsets 4, 5 are used, GS_VGPR_COMP_CNT is ignored and
* VGPR[0:4] are always loaded.
*/
if (sel->info.uses_invocationid)
gs_vgpr_comp_cnt = 3; /* VGPR3 contains InvocationID. */
else if (sel->info.uses_primid)
gs_vgpr_comp_cnt = 2; /* VGPR2 contains PrimitiveID. */
else if (input_prim >= PIPE_PRIM_TRIANGLES)
gs_vgpr_comp_cnt = 1; /* VGPR1 contains offsets 2, 3 */
else
gs_vgpr_comp_cnt = 0; /* VGPR0 contains offsets 0, 1 */
unsigned num_user_sgprs;
if (es_stage == MESA_SHADER_VERTEX)
num_user_sgprs = si_get_num_vs_user_sgprs(shader, GFX9_GS_NUM_USER_SGPR);
else
num_user_sgprs = GFX9_GS_NUM_USER_SGPR;
if (sscreen->info.gfx_level >= GFX10) {
si_pm4_set_reg(pm4, R_00B320_SPI_SHADER_PGM_LO_ES, va >> 8);
} else {
si_pm4_set_reg(pm4, R_00B210_SPI_SHADER_PGM_LO_ES, va >> 8);
}
uint32_t rsrc1 = S_00B228_VGPRS((shader->config.num_vgprs - 1) / 4) | S_00B228_DX10_CLAMP(1) |
S_00B228_MEM_ORDERED(si_shader_mem_ordered(shader)) |
S_00B228_WGP_MODE(sscreen->info.gfx_level >= GFX10) |
S_00B228_FLOAT_MODE(shader->config.float_mode) |
S_00B228_GS_VGPR_COMP_CNT(gs_vgpr_comp_cnt);
uint32_t rsrc2 = S_00B22C_USER_SGPR(num_user_sgprs) |
S_00B22C_ES_VGPR_COMP_CNT(es_vgpr_comp_cnt) |
S_00B22C_OC_LDS_EN(es_stage == MESA_SHADER_TESS_EVAL) |
S_00B22C_LDS_SIZE(shader->config.lds_size) |
S_00B22C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0);
if (sscreen->info.gfx_level >= GFX10) {
rsrc2 |= S_00B22C_USER_SGPR_MSB_GFX10(num_user_sgprs >> 5);
} else {
rsrc1 |= S_00B228_SGPRS((shader->config.num_sgprs - 1) / 8);
rsrc2 |= S_00B22C_USER_SGPR_MSB_GFX9(num_user_sgprs >> 5);
}
si_pm4_set_reg(pm4, R_00B228_SPI_SHADER_PGM_RSRC1_GS, rsrc1);
si_pm4_set_reg(pm4, R_00B22C_SPI_SHADER_PGM_RSRC2_GS, rsrc2);
shader->ctx_reg.gs.spi_shader_pgm_rsrc3_gs = S_00B21C_CU_EN(0xffff) |
S_00B21C_WAVE_LIMIT(0x3F);
shader->ctx_reg.gs.spi_shader_pgm_rsrc4_gs =
(sscreen->info.gfx_level >= GFX11 ? S_00B204_CU_EN_GFX11(1) : S_00B204_CU_EN_GFX10(0xffff)) |
S_00B204_SPI_SHADER_LATE_ALLOC_GS_GFX10(0);
shader->ctx_reg.gs.vgt_gs_onchip_cntl =
S_028A44_ES_VERTS_PER_SUBGRP(shader->gs_info.es_verts_per_subgroup) |
S_028A44_GS_PRIMS_PER_SUBGRP(shader->gs_info.gs_prims_per_subgroup) |
S_028A44_GS_INST_PRIMS_IN_SUBGRP(shader->gs_info.gs_inst_prims_in_subgroup);
shader->ctx_reg.gs.vgt_gs_max_prims_per_subgroup =
S_028A94_MAX_PRIMS_PER_SUBGROUP(shader->gs_info.max_prims_per_subgroup);
shader->ctx_reg.gs.vgt_esgs_ring_itemsize = shader->key.ge.part.gs.es->info.esgs_itemsize / 4;
if (es_stage == MESA_SHADER_TESS_EVAL)
si_set_tesseval_regs(sscreen, shader->key.ge.part.gs.es, shader);
polaris_set_vgt_vertex_reuse(sscreen, shader->key.ge.part.gs.es, shader);
} else {
shader->ctx_reg.gs.spi_shader_pgm_rsrc3_gs = S_00B21C_CU_EN(0xffff) |
S_00B21C_WAVE_LIMIT(0x3F);
si_pm4_set_reg(pm4, R_00B220_SPI_SHADER_PGM_LO_GS, va >> 8);
si_pm4_set_reg(pm4, R_00B224_SPI_SHADER_PGM_HI_GS,
S_00B224_MEM_BASE(sscreen->info.address32_hi >> 8));
si_pm4_set_reg(pm4, R_00B228_SPI_SHADER_PGM_RSRC1_GS,
S_00B228_VGPRS((shader->config.num_vgprs - 1) / 4) |
S_00B228_SGPRS((shader->config.num_sgprs - 1) / 8) |
S_00B228_DX10_CLAMP(1) | S_00B228_FLOAT_MODE(shader->config.float_mode));
si_pm4_set_reg(pm4, R_00B22C_SPI_SHADER_PGM_RSRC2_GS,
S_00B22C_USER_SGPR(GFX6_GS_NUM_USER_SGPR) |
S_00B22C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0));
}
}
bool gfx10_is_ngg_passthrough(struct si_shader *shader)
{
struct si_shader_selector *sel = shader->selector;
/* Never use NGG passthrough if culling is possible even when it's not used by this shader,
* so that we don't get context rolls when enabling and disabling NGG passthrough.
*/
if (sel->screen->use_ngg_culling)
return false;
/* The definition of NGG passthrough is:
* - user GS is turned off (no amplification, no GS instancing, and no culling)
* - VGT_ESGS_RING_ITEMSIZE is ignored (behaving as if it was equal to 1)
* - vertex indices are packed into 1 VGPR
* - Navi23 and later chips can optionally skip the gs_alloc_req message
*
* NGG passthrough still allows the use of LDS.
*/
return sel->stage != MESA_SHADER_GEOMETRY && !shader->key.ge.opt.ngg_culling;
}
/* Common tail code for NGG primitive shaders. */
static void gfx10_emit_shader_ngg_tail(struct si_context *sctx, struct si_shader *shader)
{
radeon_begin(&sctx->gfx_cs);
radeon_opt_set_context_reg(sctx, R_0287FC_GE_MAX_OUTPUT_PER_SUBGROUP,
SI_TRACKED_GE_MAX_OUTPUT_PER_SUBGROUP,
shader->ctx_reg.ngg.ge_max_output_per_subgroup);
radeon_opt_set_context_reg(sctx, R_028B4C_GE_NGG_SUBGRP_CNTL, SI_TRACKED_GE_NGG_SUBGRP_CNTL,
shader->ctx_reg.ngg.ge_ngg_subgrp_cntl);
radeon_opt_set_context_reg(sctx, R_028A84_VGT_PRIMITIVEID_EN, SI_TRACKED_VGT_PRIMITIVEID_EN,
shader->ctx_reg.ngg.vgt_primitiveid_en);
if (sctx->gfx_level < GFX11) {
radeon_opt_set_context_reg(sctx, R_028A44_VGT_GS_ONCHIP_CNTL, SI_TRACKED_VGT_GS_ONCHIP_CNTL,
shader->ctx_reg.ngg.vgt_gs_onchip_cntl);
}
radeon_opt_set_context_reg(sctx, R_028B90_VGT_GS_INSTANCE_CNT, SI_TRACKED_VGT_GS_INSTANCE_CNT,
shader->ctx_reg.ngg.vgt_gs_instance_cnt);
radeon_opt_set_context_reg(sctx, R_028AAC_VGT_ESGS_RING_ITEMSIZE,
SI_TRACKED_VGT_ESGS_RING_ITEMSIZE,
shader->ctx_reg.ngg.vgt_esgs_ring_itemsize);
radeon_opt_set_context_reg(sctx, R_0286C4_SPI_VS_OUT_CONFIG, SI_TRACKED_SPI_VS_OUT_CONFIG,
shader->ctx_reg.ngg.spi_vs_out_config);
radeon_opt_set_context_reg2(
sctx, R_028708_SPI_SHADER_IDX_FORMAT, SI_TRACKED_SPI_SHADER_IDX_FORMAT,
shader->ctx_reg.ngg.spi_shader_idx_format, shader->ctx_reg.ngg.spi_shader_pos_format);
radeon_opt_set_context_reg(sctx, R_028818_PA_CL_VTE_CNTL, SI_TRACKED_PA_CL_VTE_CNTL,
shader->ctx_reg.ngg.pa_cl_vte_cntl);
radeon_opt_set_context_reg(sctx, R_028838_PA_CL_NGG_CNTL, SI_TRACKED_PA_CL_NGG_CNTL,
shader->ctx_reg.ngg.pa_cl_ngg_cntl);
radeon_end_update_context_roll(sctx);
/* These don't cause a context roll. */
radeon_begin_again(&sctx->gfx_cs);
radeon_opt_set_uconfig_reg(sctx, R_030980_GE_PC_ALLOC, SI_TRACKED_GE_PC_ALLOC,
shader->ctx_reg.ngg.ge_pc_alloc);
if (sctx->screen->info.spi_cu_en_has_effect) {
radeon_end();
ac_set_reg_cu_en(&sctx->gfx_cs, R_00B21C_SPI_SHADER_PGM_RSRC3_GS,
shader->ctx_reg.ngg.spi_shader_pgm_rsrc3_gs,
C_00B21C_CU_EN, 0, &sctx->screen->info,
(void (*)(void*, unsigned, uint32_t))
(sctx->gfx_level >= GFX10 ? radeon_set_sh_reg_idx3_func : radeon_set_sh_reg_func));
ac_set_reg_cu_en(&sctx->gfx_cs, R_00B204_SPI_SHADER_PGM_RSRC4_GS,
shader->ctx_reg.ngg.spi_shader_pgm_rsrc4_gs,
C_00B204_CU_EN_GFX10, 16, &sctx->screen->info,
(void (*)(void*, unsigned, uint32_t))
(sctx->gfx_level >= GFX10 ? radeon_set_sh_reg_idx3_func : radeon_set_sh_reg_func));
sctx->tracked_regs.reg_saved &= ~BITFIELD64_BIT(SI_TRACKED_SPI_SHADER_PGM_RSRC4_GS) &
~BITFIELD64_BIT(SI_TRACKED_SPI_SHADER_PGM_RSRC3_GS);
} else {
radeon_opt_set_sh_reg_idx3(sctx, R_00B21C_SPI_SHADER_PGM_RSRC3_GS,
SI_TRACKED_SPI_SHADER_PGM_RSRC3_GS,
shader->ctx_reg.ngg.spi_shader_pgm_rsrc3_gs);
radeon_opt_set_sh_reg_idx3(sctx, R_00B204_SPI_SHADER_PGM_RSRC4_GS,
SI_TRACKED_SPI_SHADER_PGM_RSRC4_GS,
shader->ctx_reg.ngg.spi_shader_pgm_rsrc4_gs);
radeon_end();
}
}
static void gfx10_emit_shader_ngg_notess_nogs(struct si_context *sctx)
{
struct si_shader *shader = sctx->queued.named.gs;
if (!shader)
return;
gfx10_emit_shader_ngg_tail(sctx, shader);
}
static void gfx10_emit_shader_ngg_tess_nogs(struct si_context *sctx)
{
struct si_shader *shader = sctx->queued.named.gs;
if (!shader)
return;
radeon_begin(&sctx->gfx_cs);
radeon_opt_set_context_reg(sctx, R_028B6C_VGT_TF_PARAM, SI_TRACKED_VGT_TF_PARAM,
shader->vgt_tf_param);
radeon_end_update_context_roll(sctx);
gfx10_emit_shader_ngg_tail(sctx, shader);
}
static void gfx10_emit_shader_ngg_notess_gs(struct si_context *sctx)
{
struct si_shader *shader = sctx->queued.named.gs;
if (!shader)
return;
radeon_begin(&sctx->gfx_cs);
radeon_opt_set_context_reg(sctx, R_028B38_VGT_GS_MAX_VERT_OUT, SI_TRACKED_VGT_GS_MAX_VERT_OUT,
shader->ctx_reg.ngg.vgt_gs_max_vert_out);
radeon_end_update_context_roll(sctx);
gfx10_emit_shader_ngg_tail(sctx, shader);
}
static void gfx10_emit_shader_ngg_tess_gs(struct si_context *sctx)
{
struct si_shader *shader = sctx->queued.named.gs;
if (!shader)
return;
radeon_begin(&sctx->gfx_cs);
radeon_opt_set_context_reg(sctx, R_028B38_VGT_GS_MAX_VERT_OUT, SI_TRACKED_VGT_GS_MAX_VERT_OUT,
shader->ctx_reg.ngg.vgt_gs_max_vert_out);
radeon_opt_set_context_reg(sctx, R_028B6C_VGT_TF_PARAM, SI_TRACKED_VGT_TF_PARAM,
shader->vgt_tf_param);
radeon_end_update_context_roll(sctx);
gfx10_emit_shader_ngg_tail(sctx, shader);
}
unsigned si_get_input_prim(const struct si_shader_selector *gs, const union si_shader_key *key)
{
if (gs->stage == MESA_SHADER_GEOMETRY)
return gs->info.base.gs.input_primitive;
if (gs->stage == MESA_SHADER_TESS_EVAL) {
if (gs->info.base.tess.point_mode)
return PIPE_PRIM_POINTS;
if (gs->info.base.tess._primitive_mode == TESS_PRIMITIVE_ISOLINES)
return PIPE_PRIM_LINES;
return PIPE_PRIM_TRIANGLES;
}
if (key->ge.opt.ngg_culling & SI_NGG_CULL_LINES)
return PIPE_PRIM_LINES;
return PIPE_PRIM_TRIANGLES; /* worst case for all callers */
}
static unsigned si_get_vs_out_cntl(const struct si_shader_selector *sel,
const struct si_shader *shader, bool ngg)
{
/* Clip distances can be killed, but cull distances can't. */
unsigned clipcull_mask = (sel->info.clipdist_mask & ~shader->key.ge.opt.kill_clip_distances) |
sel->info.culldist_mask;
bool writes_psize = sel->info.writes_psize && !shader->key.ge.opt.kill_pointsize;
bool misc_vec_ena = writes_psize || (sel->info.writes_edgeflag && !ngg) ||
sel->screen->options.vrs2x2 ||
sel->info.writes_layer || sel->info.writes_viewport_index;
return S_02881C_VS_OUT_CCDIST0_VEC_ENA((clipcull_mask & 0x0F) != 0) |
S_02881C_VS_OUT_CCDIST1_VEC_ENA((clipcull_mask & 0xF0) != 0) |
S_02881C_USE_VTX_POINT_SIZE(writes_psize) |
S_02881C_USE_VTX_EDGE_FLAG(sel->info.writes_edgeflag && !ngg) |
S_02881C_USE_VTX_VRS_RATE(sel->screen->options.vrs2x2) |
S_02881C_USE_VTX_RENDER_TARGET_INDX(sel->info.writes_layer) |
S_02881C_USE_VTX_VIEWPORT_INDX(sel->info.writes_viewport_index) |
S_02881C_VS_OUT_MISC_VEC_ENA(misc_vec_ena) |
S_02881C_VS_OUT_MISC_SIDE_BUS_ENA(misc_vec_ena);
}
/**
* Prepare the PM4 image for \p shader, which will run as a merged ESGS shader
* in NGG mode.
*/
static void gfx10_shader_ngg(struct si_screen *sscreen, struct si_shader *shader)
{
const struct si_shader_selector *gs_sel = shader->selector;
const struct si_shader_info *gs_info = &gs_sel->info;
const gl_shader_stage gs_stage = shader->selector->stage;
const struct si_shader_selector *es_sel =
shader->previous_stage_sel ? shader->previous_stage_sel : shader->selector;
const struct si_shader_info *es_info = &es_sel->info;
const gl_shader_stage es_stage = es_sel->stage;
unsigned num_user_sgprs;
unsigned nparams, es_vgpr_comp_cnt, gs_vgpr_comp_cnt;
uint64_t va;
bool window_space = gs_sel->stage == MESA_SHADER_VERTEX ?
gs_info->base.vs.window_space_position : 0;
bool es_enable_prim_id = shader->key.ge.mono.u.vs_export_prim_id || es_info->uses_primid;
unsigned gs_num_invocations = gs_sel->stage == MESA_SHADER_GEOMETRY ?
MAX2(gs_info->base.gs.invocations, 1) : 0;
unsigned input_prim = si_get_input_prim(gs_sel, &shader->key);
bool break_wave_at_eoi = false;
struct si_pm4_state *pm4 = si_get_shader_pm4_state(shader);
if (!pm4)
return;
if (es_stage == MESA_SHADER_TESS_EVAL) {
pm4->atom.emit = gs_stage == MESA_SHADER_GEOMETRY ? gfx10_emit_shader_ngg_tess_gs
: gfx10_emit_shader_ngg_tess_nogs;
} else {
pm4->atom.emit = gs_stage == MESA_SHADER_GEOMETRY ? gfx10_emit_shader_ngg_notess_gs
: gfx10_emit_shader_ngg_notess_nogs;
}
va = shader->bo->gpu_address;
if (es_stage == MESA_SHADER_VERTEX) {
es_vgpr_comp_cnt = si_get_vs_vgpr_comp_cnt(sscreen, shader, false);
if (es_info->base.vs.blit_sgprs_amd) {
num_user_sgprs =
SI_SGPR_VS_BLIT_DATA + es_info->base.vs.blit_sgprs_amd;
} else {
num_user_sgprs = si_get_num_vs_user_sgprs(shader, GFX9_GS_NUM_USER_SGPR);
}
} else {
assert(es_stage == MESA_SHADER_TESS_EVAL);
es_vgpr_comp_cnt = es_enable_prim_id ? 3 : 2;
num_user_sgprs = GFX9_GS_NUM_USER_SGPR;
if (es_enable_prim_id || gs_info->uses_primid)
break_wave_at_eoi = true;
}
/* If offsets 4, 5 are used, GS_VGPR_COMP_CNT is ignored and
* VGPR[0:4] are always loaded.
*
* Vertex shaders always need to load VGPR3, because they need to
* pass edge flags for decomposed primitives (such as quads) to the PA
* for the GL_LINE polygon mode to skip rendering lines on inner edges.
*/
if (gs_info->uses_invocationid ||
(gfx10_edgeflags_have_effect(shader) && !gfx10_is_ngg_passthrough(shader)))
gs_vgpr_comp_cnt = 3; /* VGPR3 contains InvocationID, edge flags. */
else if ((gs_stage == MESA_SHADER_GEOMETRY && gs_info->uses_primid) ||
(gs_stage == MESA_SHADER_VERTEX && shader->key.ge.mono.u.vs_export_prim_id))
gs_vgpr_comp_cnt = 2; /* VGPR2 contains PrimitiveID. */
else if (input_prim >= PIPE_PRIM_TRIANGLES && !gfx10_is_ngg_passthrough(shader))
gs_vgpr_comp_cnt = 1; /* VGPR1 contains offsets 2, 3 */
else
gs_vgpr_comp_cnt = 0; /* VGPR0 contains offsets 0, 1 */
unsigned late_alloc_wave64, cu_mask;
ac_compute_late_alloc(&sscreen->info, true, shader->key.ge.opt.ngg_culling,
shader->config.scratch_bytes_per_wave > 0,
&late_alloc_wave64, &cu_mask);
si_pm4_set_reg(pm4, R_00B320_SPI_SHADER_PGM_LO_ES, va >> 8);
si_pm4_set_reg(
pm4, R_00B228_SPI_SHADER_PGM_RSRC1_GS,
S_00B228_VGPRS((shader->config.num_vgprs - 1) / (shader->wave_size == 32 ? 8 : 4)) |
S_00B228_FLOAT_MODE(shader->config.float_mode) | S_00B228_DX10_CLAMP(1) |
S_00B228_MEM_ORDERED(si_shader_mem_ordered(shader)) |
/* Disable the WGP mode on gfx10.3 because it can hang. (it happened on VanGogh)
* Let's disable it on all chips that disable exactly 1 CU per SA for GS. */
S_00B228_WGP_MODE(sscreen->info.gfx_level == GFX10) |
S_00B228_GS_VGPR_COMP_CNT(gs_vgpr_comp_cnt));
si_pm4_set_reg(pm4, R_00B22C_SPI_SHADER_PGM_RSRC2_GS,
S_00B22C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0) |
S_00B22C_USER_SGPR(num_user_sgprs) |
S_00B22C_ES_VGPR_COMP_CNT(es_vgpr_comp_cnt) |
S_00B22C_USER_SGPR_MSB_GFX10(num_user_sgprs >> 5) |
S_00B22C_OC_LDS_EN(es_stage == MESA_SHADER_TESS_EVAL) |
S_00B22C_LDS_SIZE(shader->config.lds_size));
shader->ctx_reg.ngg.spi_shader_pgm_rsrc3_gs = S_00B21C_CU_EN(cu_mask) |
S_00B21C_WAVE_LIMIT(0x3F);
if (sscreen->info.gfx_level >= GFX11) {
shader->ctx_reg.ngg.spi_shader_pgm_rsrc4_gs =
S_00B204_CU_EN_GFX11(0x1) | S_00B204_SPI_SHADER_LATE_ALLOC_GS_GFX10(late_alloc_wave64) |
S_00B204_INST_PREF_SIZE(si_calc_inst_pref_size(shader));
} else {
shader->ctx_reg.ngg.spi_shader_pgm_rsrc4_gs =
S_00B204_CU_EN_GFX10(0xffff) | S_00B204_SPI_SHADER_LATE_ALLOC_GS_GFX10(late_alloc_wave64);
}
nparams = MAX2(shader->info.nr_param_exports, 1);
shader->ctx_reg.ngg.spi_vs_out_config =
S_0286C4_VS_EXPORT_COUNT(nparams - 1) |
S_0286C4_NO_PC_EXPORT(shader->info.nr_param_exports == 0);
shader->ctx_reg.ngg.spi_shader_idx_format =
S_028708_IDX0_EXPORT_FORMAT(V_028708_SPI_SHADER_1COMP);
shader->ctx_reg.ngg.spi_shader_pos_format =
S_02870C_POS0_EXPORT_FORMAT(V_02870C_SPI_SHADER_4COMP) |
S_02870C_POS1_EXPORT_FORMAT(shader->info.nr_pos_exports > 1 ? V_02870C_SPI_SHADER_4COMP
: V_02870C_SPI_SHADER_NONE) |
S_02870C_POS2_EXPORT_FORMAT(shader->info.nr_pos_exports > 2 ? V_02870C_SPI_SHADER_4COMP
: V_02870C_SPI_SHADER_NONE) |
S_02870C_POS3_EXPORT_FORMAT(shader->info.nr_pos_exports > 3 ? V_02870C_SPI_SHADER_4COMP
: V_02870C_SPI_SHADER_NONE);
shader->ctx_reg.ngg.vgt_primitiveid_en =
S_028A84_PRIMITIVEID_EN(es_enable_prim_id) |
S_028A84_NGG_DISABLE_PROVOK_REUSE(shader->key.ge.mono.u.vs_export_prim_id ||
gs_sel->info.writes_primid);
if (gs_stage == MESA_SHADER_GEOMETRY) {
shader->ctx_reg.ngg.vgt_esgs_ring_itemsize = es_sel->info.esgs_itemsize / 4;
shader->ctx_reg.ngg.vgt_gs_max_vert_out = gs_sel->info.base.gs.vertices_out;
} else {
shader->ctx_reg.ngg.vgt_esgs_ring_itemsize = 1;
}
if (es_stage == MESA_SHADER_TESS_EVAL)
si_set_tesseval_regs(sscreen, es_sel, shader);
shader->ctx_reg.ngg.ge_max_output_per_subgroup =
S_0287FC_MAX_VERTS_PER_SUBGROUP(shader->ngg.max_out_verts);
shader->ctx_reg.ngg.ge_ngg_subgrp_cntl = S_028B4C_PRIM_AMP_FACTOR(shader->ngg.prim_amp_factor) |
S_028B4C_THDS_PER_SUBGRP(0); /* for fast launch */
shader->ctx_reg.ngg.vgt_gs_instance_cnt =
S_028B90_CNT(gs_num_invocations) | S_028B90_ENABLE(gs_num_invocations > 1) |
S_028B90_EN_MAX_VERT_OUT_PER_GS_INSTANCE(shader->ngg.max_vert_out_per_gs_instance);
/* Output hw-generated edge flags if needed and pass them via the prim
* export to prevent drawing lines on internal edges of decomposed
* primitives (such as quads) with polygon mode = lines.
*/
shader->ctx_reg.ngg.pa_cl_ngg_cntl =
S_028838_INDEX_BUF_EDGE_FLAG_ENA(gfx10_edgeflags_have_effect(shader)) |
/* Reuse for NGG. */
S_028838_VERTEX_REUSE_DEPTH(sscreen->info.gfx_level >= GFX10_3 ? 30 : 0);
shader->pa_cl_vs_out_cntl = si_get_vs_out_cntl(shader->selector, shader, true);
/* Oversubscribe PC. This improves performance when there are too many varyings. */
unsigned oversub_pc_factor = 1;
if (shader->key.ge.opt.ngg_culling) {
/* Be more aggressive with NGG culling. */
if (shader->info.nr_param_exports > 4)
oversub_pc_factor = 4;
else if (shader->info.nr_param_exports > 2)
oversub_pc_factor = 3;
else
oversub_pc_factor = 2;
}
unsigned oversub_pc_lines =
late_alloc_wave64 ? (sscreen->info.pc_lines / 4) * oversub_pc_factor : 0;
shader->ctx_reg.ngg.ge_pc_alloc = S_030980_OVERSUB_EN(oversub_pc_lines > 0) |
S_030980_NUM_PC_LINES(oversub_pc_lines - 1);
if (sscreen->info.gfx_level >= GFX11) {
shader->ge_cntl = S_03096C_PRIMS_PER_SUBGRP(shader->ngg.max_gsprims) |
S_03096C_VERTS_PER_SUBGRP(shader->ngg.hw_max_esverts) |
S_03096C_BREAK_PRIMGRP_AT_EOI(break_wave_at_eoi) |
S_03096C_PRIM_GRP_SIZE_GFX11(256);
} else {
shader->ge_cntl = S_03096C_PRIM_GRP_SIZE_GFX10(shader->ngg.max_gsprims) |
S_03096C_VERT_GRP_SIZE(shader->ngg.hw_max_esverts) |
S_03096C_BREAK_WAVE_AT_EOI(break_wave_at_eoi);
shader->ctx_reg.ngg.vgt_gs_onchip_cntl =
S_028A44_ES_VERTS_PER_SUBGRP(shader->ngg.hw_max_esverts) |
S_028A44_GS_PRIMS_PER_SUBGRP(shader->ngg.max_gsprims) |
S_028A44_GS_INST_PRIMS_IN_SUBGRP(shader->ngg.max_gsprims * gs_num_invocations);
}
/* On gfx10, the GE only checks against the maximum number of ES verts after
* allocating a full GS primitive. So we need to ensure that whenever
* this check passes, there is enough space for a full primitive without
* vertex reuse. VERT_GRP_SIZE=256 doesn't need this. We should always get 256
* if we have enough LDS.
*
* Tessellation is unaffected because it always sets GE_CNTL.VERT_GRP_SIZE = 0.
*/
if ((sscreen->info.gfx_level == GFX10) &&
(es_stage == MESA_SHADER_VERTEX || gs_stage == MESA_SHADER_VERTEX) && /* = no tess */
shader->ngg.hw_max_esverts != 256 &&
shader->ngg.hw_max_esverts > 5) {
/* This could be based on the input primitive type. 5 is the worst case
* for primitive types with adjacency.
*/
shader->ge_cntl &= C_03096C_VERT_GRP_SIZE;
shader->ge_cntl |= S_03096C_VERT_GRP_SIZE(shader->ngg.hw_max_esverts - 5);
}
if (window_space) {
shader->ctx_reg.ngg.pa_cl_vte_cntl = S_028818_VTX_XY_FMT(1) | S_028818_VTX_Z_FMT(1);
} else {
shader->ctx_reg.ngg.pa_cl_vte_cntl =
S_028818_VTX_W0_FMT(1) | S_028818_VPORT_X_SCALE_ENA(1) | S_028818_VPORT_X_OFFSET_ENA(1) |
S_028818_VPORT_Y_SCALE_ENA(1) | S_028818_VPORT_Y_OFFSET_ENA(1) |
S_028818_VPORT_Z_SCALE_ENA(1) | S_028818_VPORT_Z_OFFSET_ENA(1);
}
shader->ctx_reg.ngg.vgt_stages.u.ngg = 1;
shader->ctx_reg.ngg.vgt_stages.u.streamout = si_shader_uses_streamout(shader);
shader->ctx_reg.ngg.vgt_stages.u.ngg_passthrough = gfx10_is_ngg_passthrough(shader);
shader->ctx_reg.ngg.vgt_stages.u.gs_wave32 = shader->wave_size == 32;
}
static void si_emit_shader_vs(struct si_context *sctx)
{
struct si_shader *shader = sctx->queued.named.vs;
if (!shader)
return;
radeon_begin(&sctx->gfx_cs);
radeon_opt_set_context_reg(sctx, R_028A40_VGT_GS_MODE, SI_TRACKED_VGT_GS_MODE,
shader->ctx_reg.vs.vgt_gs_mode);
radeon_opt_set_context_reg(sctx, R_028A84_VGT_PRIMITIVEID_EN, SI_TRACKED_VGT_PRIMITIVEID_EN,
shader->ctx_reg.vs.vgt_primitiveid_en);
if (sctx->gfx_level <= GFX8) {
radeon_opt_set_context_reg(sctx, R_028AB4_VGT_REUSE_OFF, SI_TRACKED_VGT_REUSE_OFF,
shader->ctx_reg.vs.vgt_reuse_off);
}
radeon_opt_set_context_reg(sctx, R_0286C4_SPI_VS_OUT_CONFIG, SI_TRACKED_SPI_VS_OUT_CONFIG,
shader->ctx_reg.vs.spi_vs_out_config);
radeon_opt_set_context_reg(sctx, R_02870C_SPI_SHADER_POS_FORMAT,
SI_TRACKED_SPI_SHADER_POS_FORMAT,
shader->ctx_reg.vs.spi_shader_pos_format);
radeon_opt_set_context_reg(sctx, R_028818_PA_CL_VTE_CNTL, SI_TRACKED_PA_CL_VTE_CNTL,
shader->ctx_reg.vs.pa_cl_vte_cntl);
if (shader->selector->stage == MESA_SHADER_TESS_EVAL)
radeon_opt_set_context_reg(sctx, R_028B6C_VGT_TF_PARAM, SI_TRACKED_VGT_TF_PARAM,
shader->vgt_tf_param);
if (shader->vgt_vertex_reuse_block_cntl)
radeon_opt_set_context_reg(sctx, R_028C58_VGT_VERTEX_REUSE_BLOCK_CNTL,
SI_TRACKED_VGT_VERTEX_REUSE_BLOCK_CNTL,
shader->vgt_vertex_reuse_block_cntl);
/* Required programming for tessellation. (legacy pipeline only) */
if (sctx->gfx_level >= GFX10 && shader->selector->stage == MESA_SHADER_TESS_EVAL) {
radeon_opt_set_context_reg(sctx, R_028A44_VGT_GS_ONCHIP_CNTL,
SI_TRACKED_VGT_GS_ONCHIP_CNTL,
S_028A44_ES_VERTS_PER_SUBGRP(250) |
S_028A44_GS_PRIMS_PER_SUBGRP(126) |
S_028A44_GS_INST_PRIMS_IN_SUBGRP(126));
}
radeon_end_update_context_roll(sctx);
/* GE_PC_ALLOC is not a context register, so it doesn't cause a context roll. */
if (sctx->gfx_level >= GFX10) {
radeon_begin_again(&sctx->gfx_cs);
radeon_opt_set_uconfig_reg(sctx, R_030980_GE_PC_ALLOC, SI_TRACKED_GE_PC_ALLOC,
shader->ctx_reg.vs.ge_pc_alloc);
radeon_end();
}
}
/**
* Compute the state for \p shader, which will run as a vertex shader on the
* hardware.
*
* If \p gs is non-NULL, it points to the geometry shader for which this shader
* is the copy shader.
*/
static void si_shader_vs(struct si_screen *sscreen, struct si_shader *shader,
struct si_shader_selector *gs)
{
const struct si_shader_info *info = &shader->selector->info;
struct si_pm4_state *pm4;
unsigned num_user_sgprs, vgpr_comp_cnt;
uint64_t va;
unsigned nparams, oc_lds_en;
bool window_space = shader->selector->stage == MESA_SHADER_VERTEX ?
info->base.vs.window_space_position : 0;
bool enable_prim_id = shader->key.ge.mono.u.vs_export_prim_id || info->uses_primid;
assert(sscreen->info.gfx_level < GFX11);
pm4 = si_get_shader_pm4_state(shader);
if (!pm4)
return;
pm4->atom.emit = si_emit_shader_vs;
/* We always write VGT_GS_MODE in the VS state, because every switch
* between different shader pipelines involving a different GS or no
* GS at all involves a switch of the VS (different GS use different
* copy shaders). On the other hand, when the API switches from a GS to
* no GS and then back to the same GS used originally, the GS state is
* not sent again.
*/
if (!gs) {
unsigned mode = V_028A40_GS_OFF;
/* PrimID needs GS scenario A. */
if (enable_prim_id)
mode = V_028A40_GS_SCENARIO_A;
shader->ctx_reg.vs.vgt_gs_mode = S_028A40_MODE(mode);
shader->ctx_reg.vs.vgt_primitiveid_en = enable_prim_id;
} else {
shader->ctx_reg.vs.vgt_gs_mode =
ac_vgt_gs_mode(gs->info.base.gs.vertices_out, sscreen->info.gfx_level);
shader->ctx_reg.vs.vgt_primitiveid_en = 0;
}
if (sscreen->info.gfx_level <= GFX8) {
/* Reuse needs to be set off if we write oViewport. */
shader->ctx_reg.vs.vgt_reuse_off = S_028AB4_REUSE_OFF(info->writes_viewport_index);
}
va = shader->bo->gpu_address;
if (gs) {
vgpr_comp_cnt = 0; /* only VertexID is needed for GS-COPY. */
num_user_sgprs = SI_GSCOPY_NUM_USER_SGPR;
} else if (shader->selector->stage == MESA_SHADER_VERTEX) {
vgpr_comp_cnt = si_get_vs_vgpr_comp_cnt(sscreen, shader, enable_prim_id);
if (info->base.vs.blit_sgprs_amd) {
num_user_sgprs = SI_SGPR_VS_BLIT_DATA + info->base.vs.blit_sgprs_amd;
} else {
num_user_sgprs = si_get_num_vs_user_sgprs(shader, SI_VS_NUM_USER_SGPR);
}
} else if (shader->selector->stage == MESA_SHADER_TESS_EVAL) {
vgpr_comp_cnt = enable_prim_id ? 3 : 2;
num_user_sgprs = SI_TES_NUM_USER_SGPR;
} else
unreachable("invalid shader selector type");
/* VS is required to export at least one param. */
nparams = MAX2(shader->info.nr_param_exports, 1);
shader->ctx_reg.vs.spi_vs_out_config = S_0286C4_VS_EXPORT_COUNT(nparams - 1);
if (sscreen->info.gfx_level >= GFX10) {
shader->ctx_reg.vs.spi_vs_out_config |=
S_0286C4_NO_PC_EXPORT(shader->info.nr_param_exports == 0);
}
shader->ctx_reg.vs.spi_shader_pos_format =
S_02870C_POS0_EXPORT_FORMAT(V_02870C_SPI_SHADER_4COMP) |
S_02870C_POS1_EXPORT_FORMAT(shader->info.nr_pos_exports > 1 ? V_02870C_SPI_SHADER_4COMP
: V_02870C_SPI_SHADER_NONE) |
S_02870C_POS2_EXPORT_FORMAT(shader->info.nr_pos_exports > 2 ? V_02870C_SPI_SHADER_4COMP
: V_02870C_SPI_SHADER_NONE) |
S_02870C_POS3_EXPORT_FORMAT(shader->info.nr_pos_exports > 3 ? V_02870C_SPI_SHADER_4COMP
: V_02870C_SPI_SHADER_NONE);
unsigned late_alloc_wave64, cu_mask;
ac_compute_late_alloc(&sscreen->info, false, false,
shader->config.scratch_bytes_per_wave > 0,
&late_alloc_wave64, &cu_mask);
shader->ctx_reg.vs.ge_pc_alloc = S_030980_OVERSUB_EN(late_alloc_wave64 > 0) |
S_030980_NUM_PC_LINES(sscreen->info.pc_lines / 4 - 1);
shader->pa_cl_vs_out_cntl = si_get_vs_out_cntl(shader->selector, shader, false);
oc_lds_en = shader->selector->stage == MESA_SHADER_TESS_EVAL ? 1 : 0;
if (sscreen->info.gfx_level >= GFX7) {
ac_set_reg_cu_en(pm4, R_00B118_SPI_SHADER_PGM_RSRC3_VS,
S_00B118_CU_EN(cu_mask) | S_00B118_WAVE_LIMIT(0x3F),
C_00B118_CU_EN, 0, &sscreen->info,
(void (*)(void*, unsigned, uint32_t))
(sscreen->info.gfx_level >= GFX10 ? si_pm4_set_reg_idx3 : si_pm4_set_reg));
si_pm4_set_reg(pm4, R_00B11C_SPI_SHADER_LATE_ALLOC_VS, S_00B11C_LIMIT(late_alloc_wave64));
}
si_pm4_set_reg(pm4, R_00B120_SPI_SHADER_PGM_LO_VS, va >> 8);
si_pm4_set_reg(pm4, R_00B124_SPI_SHADER_PGM_HI_VS,
S_00B124_MEM_BASE(sscreen->info.address32_hi >> 8));
uint32_t rsrc1 =
S_00B128_VGPRS((shader->config.num_vgprs - 1) / (shader->wave_size == 32 ? 8 : 4)) |
S_00B128_VGPR_COMP_CNT(vgpr_comp_cnt) | S_00B128_DX10_CLAMP(1) |
S_00B128_MEM_ORDERED(si_shader_mem_ordered(shader)) |
S_00B128_FLOAT_MODE(shader->config.float_mode);
uint32_t rsrc2 = S_00B12C_USER_SGPR(num_user_sgprs) | S_00B12C_OC_LDS_EN(oc_lds_en) |
S_00B12C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0);
if (sscreen->info.gfx_level >= GFX10)
rsrc2 |= S_00B12C_USER_SGPR_MSB_GFX10(num_user_sgprs >> 5);
else if (sscreen->info.gfx_level == GFX9)
rsrc2 |= S_00B12C_USER_SGPR_MSB_GFX9(num_user_sgprs >> 5);
if (sscreen->info.gfx_level <= GFX9)
rsrc1 |= S_00B128_SGPRS((shader->config.num_sgprs - 1) / 8);
if (!sscreen->use_ngg_streamout && si_shader_uses_streamout(shader)) {
rsrc2 |= S_00B12C_SO_BASE0_EN(!!shader->selector->info.base.xfb_stride[0]) |
S_00B12C_SO_BASE1_EN(!!shader->selector->info.base.xfb_stride[1]) |
S_00B12C_SO_BASE2_EN(!!shader->selector->info.base.xfb_stride[2]) |
S_00B12C_SO_BASE3_EN(!!shader->selector->info.base.xfb_stride[3]) |
S_00B12C_SO_EN(1);
}
si_pm4_set_reg(pm4, R_00B128_SPI_SHADER_PGM_RSRC1_VS, rsrc1);
si_pm4_set_reg(pm4, R_00B12C_SPI_SHADER_PGM_RSRC2_VS, rsrc2);
if (window_space)
shader->ctx_reg.vs.pa_cl_vte_cntl = S_028818_VTX_XY_FMT(1) | S_028818_VTX_Z_FMT(1);
else
shader->ctx_reg.vs.pa_cl_vte_cntl =
S_028818_VTX_W0_FMT(1) | S_028818_VPORT_X_SCALE_ENA(1) | S_028818_VPORT_X_OFFSET_ENA(1) |
S_028818_VPORT_Y_SCALE_ENA(1) | S_028818_VPORT_Y_OFFSET_ENA(1) |
S_028818_VPORT_Z_SCALE_ENA(1) | S_028818_VPORT_Z_OFFSET_ENA(1);
if (shader->selector->stage == MESA_SHADER_TESS_EVAL)
si_set_tesseval_regs(sscreen, shader->selector, shader);
polaris_set_vgt_vertex_reuse(sscreen, shader->selector, shader);
}
static unsigned si_get_spi_shader_col_format(struct si_shader *shader)
{
unsigned spi_shader_col_format = shader->key.ps.part.epilog.spi_shader_col_format;
unsigned value = 0, num_mrts = 0;
unsigned i, num_targets = (util_last_bit(spi_shader_col_format) + 3) / 4;
/* Remove holes in spi_shader_col_format. */
for (i = 0; i < num_targets; i++) {
unsigned spi_format = (spi_shader_col_format >> (i * 4)) & 0xf;
if (spi_format) {
value |= spi_format << (num_mrts * 4);
num_mrts++;
}
}
return value;
}
static void si_emit_shader_ps(struct si_context *sctx)
{
struct si_shader *shader = sctx->queued.named.ps;
if (!shader)
return;
radeon_begin(&sctx->gfx_cs);
/* R_0286CC_SPI_PS_INPUT_ENA, R_0286D0_SPI_PS_INPUT_ADDR*/
radeon_opt_set_context_reg2(sctx, R_0286CC_SPI_PS_INPUT_ENA, SI_TRACKED_SPI_PS_INPUT_ENA,
shader->ctx_reg.ps.spi_ps_input_ena,
shader->ctx_reg.ps.spi_ps_input_addr);
radeon_opt_set_context_reg(sctx, R_0286E0_SPI_BARYC_CNTL, SI_TRACKED_SPI_BARYC_CNTL,
shader->ctx_reg.ps.spi_baryc_cntl);
radeon_opt_set_context_reg(sctx, R_0286D8_SPI_PS_IN_CONTROL, SI_TRACKED_SPI_PS_IN_CONTROL,
shader->ctx_reg.ps.spi_ps_in_control);
/* R_028710_SPI_SHADER_Z_FORMAT, R_028714_SPI_SHADER_COL_FORMAT */
radeon_opt_set_context_reg2(sctx, R_028710_SPI_SHADER_Z_FORMAT, SI_TRACKED_SPI_SHADER_Z_FORMAT,
shader->ctx_reg.ps.spi_shader_z_format,
shader->ctx_reg.ps.spi_shader_col_format);
radeon_opt_set_context_reg(sctx, R_02823C_CB_SHADER_MASK, SI_TRACKED_CB_SHADER_MASK,
shader->ctx_reg.ps.cb_shader_mask);
radeon_end_update_context_roll(sctx);
}
static void si_shader_ps(struct si_screen *sscreen, struct si_shader *shader)
{
struct si_shader_info *info = &shader->selector->info;
struct si_pm4_state *pm4;
unsigned spi_ps_in_control, spi_shader_col_format, cb_shader_mask;
unsigned spi_baryc_cntl = S_0286E0_FRONT_FACE_ALL_BITS(1);
uint64_t va;
unsigned input_ena = shader->config.spi_ps_input_ena;
/* we need to enable at least one of them, otherwise we hang the GPU */
assert(G_0286CC_PERSP_SAMPLE_ENA(input_ena) || G_0286CC_PERSP_CENTER_ENA(input_ena) ||
G_0286CC_PERSP_CENTROID_ENA(input_ena) || G_0286CC_PERSP_PULL_MODEL_ENA(input_ena) ||
G_0286CC_LINEAR_SAMPLE_ENA(input_ena) || G_0286CC_LINEAR_CENTER_ENA(input_ena) ||
G_0286CC_LINEAR_CENTROID_ENA(input_ena) || G_0286CC_LINE_STIPPLE_TEX_ENA(input_ena));
/* POS_W_FLOAT_ENA requires one of the perspective weights. */
assert(!G_0286CC_POS_W_FLOAT_ENA(input_ena) || G_0286CC_PERSP_SAMPLE_ENA(input_ena) ||
G_0286CC_PERSP_CENTER_ENA(input_ena) || G_0286CC_PERSP_CENTROID_ENA(input_ena) ||
G_0286CC_PERSP_PULL_MODEL_ENA(input_ena));
/* Validate interpolation optimization flags (read as implications). */
assert(!shader->key.ps.part.prolog.bc_optimize_for_persp ||
(G_0286CC_PERSP_CENTER_ENA(input_ena) && G_0286CC_PERSP_CENTROID_ENA(input_ena)));
assert(!shader->key.ps.part.prolog.bc_optimize_for_linear ||
(G_0286CC_LINEAR_CENTER_ENA(input_ena) && G_0286CC_LINEAR_CENTROID_ENA(input_ena)));
assert(!shader->key.ps.part.prolog.force_persp_center_interp ||
(!G_0286CC_PERSP_SAMPLE_ENA(input_ena) && !G_0286CC_PERSP_CENTROID_ENA(input_ena)));
assert(!shader->key.ps.part.prolog.force_linear_center_interp ||
(!G_0286CC_LINEAR_SAMPLE_ENA(input_ena) && !G_0286CC_LINEAR_CENTROID_ENA(input_ena)));
assert(!shader->key.ps.part.prolog.force_persp_sample_interp ||
(!G_0286CC_PERSP_CENTER_ENA(input_ena) && !G_0286CC_PERSP_CENTROID_ENA(input_ena)));
assert(!shader->key.ps.part.prolog.force_linear_sample_interp ||
(!G_0286CC_LINEAR_CENTER_ENA(input_ena) && !G_0286CC_LINEAR_CENTROID_ENA(input_ena)));
/* Validate cases when the optimizations are off (read as implications). */
assert(shader->key.ps.part.prolog.bc_optimize_for_persp ||
!G_0286CC_PERSP_CENTER_ENA(input_ena) || !G_0286CC_PERSP_CENTROID_ENA(input_ena));
assert(shader->key.ps.part.prolog.bc_optimize_for_linear ||
!G_0286CC_LINEAR_CENTER_ENA(input_ena) || !G_0286CC_LINEAR_CENTROID_ENA(input_ena));
/* DB_SHADER_CONTROL */
unsigned db_shader_control =
S_02880C_Z_EXPORT_ENABLE(info->writes_z) |
S_02880C_STENCIL_TEST_VAL_EXPORT_ENABLE(info->writes_stencil) |
S_02880C_MASK_EXPORT_ENABLE(info->writes_samplemask) |
S_02880C_KILL_ENABLE(si_shader_uses_discard(shader));
switch (info->base.fs.depth_layout) {
case FRAG_DEPTH_LAYOUT_GREATER:
db_shader_control |= S_02880C_CONSERVATIVE_Z_EXPORT(V_02880C_EXPORT_GREATER_THAN_Z);
break;
case FRAG_DEPTH_LAYOUT_LESS:
db_shader_control |= S_02880C_CONSERVATIVE_Z_EXPORT(V_02880C_EXPORT_LESS_THAN_Z);
break;
default:;
}
/* Z_ORDER, EXEC_ON_HIER_FAIL and EXEC_ON_NOOP should be set as following:
*
* | early Z/S | writes_mem | allow_ReZ? | Z_ORDER | EXEC_ON_HIER_FAIL | EXEC_ON_NOOP
* --|-----------|------------|------------|--------------------|-------------------|-------------
* 1a| false | false | true | EarlyZ_Then_ReZ | 0 | 0
* 1b| false | false | false | EarlyZ_Then_LateZ | 0 | 0
* 2 | false | true | n/a | LateZ | 1 | 0
* 3 | true | false | n/a | EarlyZ_Then_LateZ | 0 | 0
* 4 | true | true | n/a | EarlyZ_Then_LateZ | 0 | 1
*
* In cases 3 and 4, HW will force Z_ORDER to EarlyZ regardless of what's set in the register.
* In case 2, NOOP_CULL is a don't care field. In case 2, 3 and 4, ReZ doesn't make sense.
*
* Don't use ReZ without profiling !!!
*
* ReZ decreases performance by 15% in DiRT: Showdown on Ultra settings, which has pretty complex
* shaders.
*/
if (info->base.fs.early_fragment_tests) {
/* Cases 3, 4. */
db_shader_control |= S_02880C_DEPTH_BEFORE_SHADER(1) |
S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z) |
S_02880C_EXEC_ON_NOOP(info->base.writes_memory);
} else if (info->base.writes_memory) {
/* Case 2. */
db_shader_control |= S_02880C_Z_ORDER(V_02880C_LATE_Z) | S_02880C_EXEC_ON_HIER_FAIL(1);
} else {
/* Case 1. */
db_shader_control |= S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z);
}
if (info->base.fs.post_depth_coverage)
db_shader_control |= S_02880C_PRE_SHADER_DEPTH_COVERAGE_ENABLE(1);
shader->ctx_reg.ps.db_shader_control = db_shader_control;
pm4 = si_get_shader_pm4_state(shader);
if (!pm4)
return;
/* If multiple state sets are allowed to be in a bin, break the batch on a new PS. */
if (sscreen->dpbb_allowed &&
(sscreen->pbb_context_states_per_bin > 1 ||
sscreen->pbb_persistent_states_per_bin > 1)) {
si_pm4_cmd_add(pm4, PKT3(PKT3_EVENT_WRITE, 0, 0));
si_pm4_cmd_add(pm4, EVENT_TYPE(V_028A90_BREAK_BATCH) | EVENT_INDEX(0));
}
pm4->atom.emit = si_emit_shader_ps;
/* SPI_BARYC_CNTL.POS_FLOAT_LOCATION
* Possible vaules:
* 0 -> Position = pixel center
* 1 -> Position = pixel centroid
* 2 -> Position = at sample position
*
* From GLSL 4.5 specification, section 7.1:
* "The variable gl_FragCoord is available as an input variable from
* within fragment shaders and it holds the window relative coordinates
* (x, y, z, 1/w) values for the fragment. If multi-sampling, this
* value can be for any location within the pixel, or one of the
* fragment samples. The use of centroid does not further restrict
* this value to be inside the current primitive."
*
* Meaning that centroid has no effect and we can return anything within
* the pixel. Thus, return the value at sample position, because that's
* the most accurate one shaders can get.
*/
spi_baryc_cntl |= S_0286E0_POS_FLOAT_LOCATION(2);
if (info->base.fs.pixel_center_integer)
spi_baryc_cntl |= S_0286E0_POS_FLOAT_ULC(1);
spi_shader_col_format = si_get_spi_shader_col_format(shader);
cb_shader_mask = ac_get_cb_shader_mask(shader->key.ps.part.epilog.spi_shader_col_format);
/* Ensure that some export memory is always allocated, for two reasons:
*
* 1) Correctness: The hardware ignores the EXEC mask if no export
* memory is allocated, so KILL and alpha test do not work correctly
* without this.
* 2) Performance: Every shader needs at least a NULL export, even when
* it writes no color/depth output. The NULL export instruction
* stalls without this setting.
*
* Don't add this to CB_SHADER_MASK.
*
* GFX10 supports pixel shaders without exports by setting both
* the color and Z formats to SPI_SHADER_ZERO. The hw will skip export
* instructions if any are present.
*/
bool has_mrtz = info->writes_z || info->writes_stencil || info->writes_samplemask;
if (!spi_shader_col_format && !has_mrtz) {
if (sscreen->info.gfx_level >= GFX10) {
if (G_02880C_KILL_ENABLE(db_shader_control))
spi_shader_col_format = V_028714_SPI_SHADER_32_R;
} else {
spi_shader_col_format = V_028714_SPI_SHADER_32_R;
}
}
shader->ctx_reg.ps.spi_ps_input_ena = input_ena;
shader->ctx_reg.ps.spi_ps_input_addr = shader->config.spi_ps_input_addr;
unsigned num_interp = si_get_ps_num_interp(shader);
/* Set interpolation controls. */
spi_ps_in_control = S_0286D8_NUM_INTERP(num_interp) |
S_0286D8_PS_W32_EN(shader->wave_size == 32);
/* Enable PARAM_GEN for point smoothing.
* Gfx11 workaround when there are no PS inputs but LDS is used.
*/
if ((sscreen->info.gfx_level == GFX11 && !num_interp && shader->config.lds_size) ||
shader->key.ps.mono.point_smoothing)
spi_ps_in_control |= S_0286D8_PARAM_GEN(1);
shader->ctx_reg.ps.num_interp = num_interp;
shader->ctx_reg.ps.spi_baryc_cntl = spi_baryc_cntl;
shader->ctx_reg.ps.spi_ps_in_control = spi_ps_in_control;
shader->ctx_reg.ps.spi_shader_z_format =
ac_get_spi_shader_z_format(info->writes_z, info->writes_stencil, info->writes_samplemask,
shader->key.ps.part.epilog.alpha_to_coverage_via_mrtz);
shader->ctx_reg.ps.spi_shader_col_format = spi_shader_col_format;
shader->ctx_reg.ps.cb_shader_mask = cb_shader_mask;
va = shader->bo->gpu_address;
si_pm4_set_reg(pm4, R_00B020_SPI_SHADER_PGM_LO_PS, va >> 8);
si_pm4_set_reg(pm4, R_00B024_SPI_SHADER_PGM_HI_PS,
S_00B024_MEM_BASE(sscreen->info.address32_hi >> 8));
uint32_t rsrc1 =
S_00B028_VGPRS((shader->config.num_vgprs - 1) / (shader->wave_size == 32 ? 8 : 4)) |
S_00B028_DX10_CLAMP(1) | S_00B028_MEM_ORDERED(si_shader_mem_ordered(shader)) |
S_00B028_FLOAT_MODE(shader->config.float_mode);
if (sscreen->info.gfx_level < GFX10) {
rsrc1 |= S_00B028_SGPRS((shader->config.num_sgprs - 1) / 8);
}
si_pm4_set_reg(pm4, R_00B028_SPI_SHADER_PGM_RSRC1_PS, rsrc1);
si_pm4_set_reg(pm4, R_00B02C_SPI_SHADER_PGM_RSRC2_PS,
S_00B02C_EXTRA_LDS_SIZE(shader->config.lds_size) |
S_00B02C_USER_SGPR(SI_PS_NUM_USER_SGPR) |
S_00B32C_SCRATCH_EN(shader->config.scratch_bytes_per_wave > 0));
if (sscreen->info.gfx_level >= GFX11) {
unsigned cu_mask_ps = gfx103_get_cu_mask_ps(sscreen);
ac_set_reg_cu_en(pm4, R_00B004_SPI_SHADER_PGM_RSRC4_PS,
S_00B004_INST_PREF_SIZE(si_calc_inst_pref_size(shader)) |
S_00B004_CU_EN(cu_mask_ps >> 16),
C_00B004_CU_EN, 16, &sscreen->info,
(void (*)(void*, unsigned, uint32_t))si_pm4_set_reg_idx3);
}
}
static void si_shader_init_pm4_state(struct si_screen *sscreen, struct si_shader *shader)
{
assert(shader->wave_size);
switch (shader->selector->stage) {
case MESA_SHADER_VERTEX:
if (shader->key.ge.as_ls)
si_shader_ls(sscreen, shader);
else if (shader->key.ge.as_es)
si_shader_es(sscreen, shader);
else if (shader->key.ge.as_ngg)
gfx10_shader_ngg(sscreen, shader);
else
si_shader_vs(sscreen, shader, NULL);
break;
case MESA_SHADER_TESS_CTRL:
si_shader_hs(sscreen, shader);
break;
case MESA_SHADER_TESS_EVAL:
if (shader->key.ge.as_es)
si_shader_es(sscreen, shader);
else if (shader->key.ge.as_ngg)
gfx10_shader_ngg(sscreen, shader);
else
si_shader_vs(sscreen, shader, NULL);
break;
case MESA_SHADER_GEOMETRY:
if (shader->key.ge.as_ngg) {
gfx10_shader_ngg(sscreen, shader);
} else {
/* VS must be initialized first because GS uses its fields. */
si_shader_vs(sscreen, shader->gs_copy_shader, shader->selector);
si_shader_gs(sscreen, shader);
}
break;
case MESA_SHADER_FRAGMENT:
si_shader_ps(sscreen, shader);
break;
default:
assert(0);
}
}
static void si_clear_vs_key_inputs(struct si_context *sctx, union si_shader_key *key,
struct si_vs_prolog_bits *prolog_key)
{
prolog_key->instance_divisor_is_one = 0;
prolog_key->instance_divisor_is_fetched = 0;
key->ge.mono.vs_fetch_opencode = 0;
memset(key->ge.mono.vs_fix_fetch, 0, sizeof(key->ge.mono.vs_fix_fetch));
}
void si_vs_key_update_inputs(struct si_context *sctx)
{
struct si_shader_selector *vs = sctx->shader.vs.cso;
struct si_vertex_elements *elts = sctx->vertex_elements;
union si_shader_key *key = &sctx->shader.vs.key;
if (!vs)
return;
if (vs->info.base.vs.blit_sgprs_amd) {
si_clear_vs_key_inputs(sctx, key, &key->ge.part.vs.prolog);
key->ge.opt.prefer_mono = 0;
sctx->uses_nontrivial_vs_prolog = false;
return;
}
bool uses_nontrivial_vs_prolog = false;
if (elts->instance_divisor_is_one || elts->instance_divisor_is_fetched)
uses_nontrivial_vs_prolog = true;
key->ge.part.vs.prolog.instance_divisor_is_one = elts->instance_divisor_is_one;
key->ge.part.vs.prolog.instance_divisor_is_fetched = elts->instance_divisor_is_fetched;
key->ge.opt.prefer_mono = elts->instance_divisor_is_fetched;
unsigned count_mask = (1 << vs->info.num_inputs) - 1;
unsigned fix = elts->fix_fetch_always & count_mask;
unsigned opencode = elts->fix_fetch_opencode & count_mask;
if (sctx->vertex_buffer_unaligned & elts->vb_alignment_check_mask) {
uint32_t mask = elts->fix_fetch_unaligned & count_mask;
while (mask) {
unsigned i = u_bit_scan(&mask);
unsigned log_hw_load_size = 1 + ((elts->hw_load_is_dword >> i) & 1);
unsigned vbidx = elts->vertex_buffer_index[i];
struct pipe_vertex_buffer *vb = &sctx->vertex_buffer[vbidx];
unsigned align_mask = (1 << log_hw_load_size) - 1;
if (vb->buffer_offset & align_mask || vb->stride & align_mask) {
fix |= 1 << i;
opencode |= 1 << i;
}
}
}
memset(key->ge.mono.vs_fix_fetch, 0, sizeof(key->ge.mono.vs_fix_fetch));
while (fix) {
unsigned i = u_bit_scan(&fix);
uint8_t fix_fetch = elts->fix_fetch[i];
key->ge.mono.vs_fix_fetch[i].bits = fix_fetch;
if (fix_fetch)
uses_nontrivial_vs_prolog = true;
}
key->ge.mono.vs_fetch_opencode = opencode;
if (opencode)
uses_nontrivial_vs_prolog = true;
sctx->uses_nontrivial_vs_prolog = uses_nontrivial_vs_prolog;
/* draw_vertex_state (display lists) requires a trivial VS prolog that ignores
* the current vertex buffers and vertex elements.
*
* We just computed the prolog key because we needed to set uses_nontrivial_vs_prolog,
* so that we know whether the VS prolog should be updated when we switch from
* draw_vertex_state to draw_vbo. Now clear the VS prolog for draw_vertex_state.
* This should happen rarely because the VS prolog should be trivial in most
* cases.
*/
if (uses_nontrivial_vs_prolog && sctx->force_trivial_vs_prolog)
si_clear_vs_key_inputs(sctx, key, &key->ge.part.vs.prolog);
}
void si_get_vs_key_inputs(struct si_context *sctx, union si_shader_key *key,
struct si_vs_prolog_bits *prolog_key)
{
prolog_key->instance_divisor_is_one = sctx->shader.vs.key.ge.part.vs.prolog.instance_divisor_is_one;
prolog_key->instance_divisor_is_fetched = sctx->shader.vs.key.ge.part.vs.prolog.instance_divisor_is_fetched;
key->ge.mono.vs_fetch_opencode = sctx->shader.vs.key.ge.mono.vs_fetch_opencode;
memcpy(key->ge.mono.vs_fix_fetch, sctx->shader.vs.key.ge.mono.vs_fix_fetch,
sizeof(key->ge.mono.vs_fix_fetch));
}
void si_update_ps_inputs_read_or_disabled(struct si_context *sctx)
{
struct si_shader_selector *ps = sctx->shader.ps.cso;
/* Find out if PS is disabled. */
bool ps_disabled = true;
if (ps) {
bool ps_modifies_zs = ps->info.base.fs.uses_discard ||
ps->info.writes_z ||
ps->info.writes_stencil ||
ps->info.writes_samplemask ||
sctx->queued.named.blend->alpha_to_coverage ||
sctx->queued.named.dsa->alpha_func != PIPE_FUNC_ALWAYS ||
sctx->queued.named.rasterizer->poly_stipple_enable ||
sctx->queued.named.rasterizer->point_smooth;
unsigned ps_colormask = si_get_total_colormask(sctx);
ps_disabled = sctx->queued.named.rasterizer->rasterizer_discard ||
(!ps_colormask && !ps_modifies_zs && !ps->info.base.writes_memory);
}
sctx->ps_inputs_read_or_disabled = ps_disabled ? 0 : ps->info.inputs_read;
}
static void si_get_vs_key_outputs(struct si_context *sctx, struct si_shader_selector *vs,
union si_shader_key *key)
{
key->ge.opt.kill_clip_distances = vs->info.clipdist_mask & ~sctx->queued.named.rasterizer->clip_plane_enable;
/* Find out which VS outputs aren't used by the PS. */
uint64_t outputs_written = vs->info.outputs_written_before_ps;
uint64_t linked = outputs_written & sctx->ps_inputs_read_or_disabled;
key->ge.opt.kill_outputs = ~linked & outputs_written;
key->ge.opt.ngg_culling = sctx->ngg_culling;
key->ge.mono.u.vs_export_prim_id = vs->stage != MESA_SHADER_GEOMETRY &&
sctx->shader.ps.cso && sctx->shader.ps.cso->info.uses_primid;
key->ge.opt.kill_pointsize = vs->info.writes_psize &&
sctx->current_rast_prim != PIPE_PRIM_POINTS &&
!sctx->queued.named.rasterizer->polygon_mode_is_points;
key->ge.opt.remove_streamout = vs->info.enabled_streamout_buffer_mask &&
!sctx->streamout.enabled_mask;
}
static void si_clear_vs_key_outputs(struct si_context *sctx, struct si_shader_selector *vs,
union si_shader_key *key)
{
key->ge.opt.kill_clip_distances = 0;
key->ge.opt.kill_outputs = 0;
key->ge.opt.remove_streamout = 0;
key->ge.opt.ngg_culling = 0;
key->ge.mono.u.vs_export_prim_id = 0;
key->ge.opt.kill_pointsize = 0;
}
void si_ps_key_update_framebuffer(struct si_context *sctx)
{
struct si_shader_selector *sel = sctx->shader.ps.cso;
union si_shader_key *key = &sctx->shader.ps.key;
if (!sel)
return;
if (sel->info.color0_writes_all_cbufs &&
sel->info.colors_written == 0x1)
key->ps.part.epilog.last_cbuf = MAX2(sctx->framebuffer.state.nr_cbufs, 1) - 1;
else
key->ps.part.epilog.last_cbuf = 0;
/* ps_uses_fbfetch is true only if the color buffer is bound. */
if (sctx->ps_uses_fbfetch) {
struct pipe_surface *cb0 = sctx->framebuffer.state.cbufs[0];
struct pipe_resource *tex = cb0->texture;
/* 1D textures are allocated and used as 2D on GFX9. */
key->ps.mono.fbfetch_msaa = sctx->framebuffer.nr_samples > 1;
key->ps.mono.fbfetch_is_1D =
sctx->gfx_level != GFX9 &&
(tex->target == PIPE_TEXTURE_1D || tex->target == PIPE_TEXTURE_1D_ARRAY);
key->ps.mono.fbfetch_layered =
tex->target == PIPE_TEXTURE_1D_ARRAY || tex->target == PIPE_TEXTURE_2D_ARRAY ||
tex->target == PIPE_TEXTURE_CUBE || tex->target == PIPE_TEXTURE_CUBE_ARRAY ||
tex->target == PIPE_TEXTURE_3D;
} else {
key->ps.mono.fbfetch_msaa = 0;
key->ps.mono.fbfetch_is_1D = 0;
key->ps.mono.fbfetch_layered = 0;
}
}
void si_ps_key_update_framebuffer_blend(struct si_context *sctx)
{
struct si_shader_selector *sel = sctx->shader.ps.cso;
union si_shader_key *key = &sctx->shader.ps.key;
struct si_state_blend *blend = sctx->queued.named.blend;
if (!sel)
return;
/* Select the shader color format based on whether
* blending or alpha are needed.
*/
key->ps.part.epilog.spi_shader_col_format =
(blend->blend_enable_4bit & blend->need_src_alpha_4bit &
sctx->framebuffer.spi_shader_col_format_blend_alpha) |
(blend->blend_enable_4bit & ~blend->need_src_alpha_4bit &
sctx->framebuffer.spi_shader_col_format_blend) |
(~blend->blend_enable_4bit & blend->need_src_alpha_4bit &
sctx->framebuffer.spi_shader_col_format_alpha) |
(~blend->blend_enable_4bit & ~blend->need_src_alpha_4bit &
sctx->framebuffer.spi_shader_col_format);
key->ps.part.epilog.spi_shader_col_format &= blend->cb_target_enabled_4bit;
key->ps.part.epilog.dual_src_blend_swizzle = sctx->gfx_level >= GFX11 &&
blend->dual_src_blend &&
(sel->info.colors_written_4bit & 0xff) == 0xff;
/* The output for dual source blending should have
* the same format as the first output.
*/
if (blend->dual_src_blend) {
key->ps.part.epilog.spi_shader_col_format |=
(key->ps.part.epilog.spi_shader_col_format & 0xf) << 4;
}
/* If alpha-to-coverage is enabled, we have to export alpha
* even if there is no color buffer.
*/
if (!(key->ps.part.epilog.spi_shader_col_format & 0xf) && blend->alpha_to_coverage)
key->ps.part.epilog.spi_shader_col_format |= V_028710_SPI_SHADER_32_AR;
/* On GFX6 and GFX7 except Hawaii, the CB doesn't clamp outputs
* to the range supported by the type if a channel has less
* than 16 bits and the export format is 16_ABGR.
*/
if (sctx->gfx_level <= GFX7 && sctx->family != CHIP_HAWAII) {
key->ps.part.epilog.color_is_int8 = sctx->framebuffer.color_is_int8;
key->ps.part.epilog.color_is_int10 = sctx->framebuffer.color_is_int10;
}
/* Disable unwritten outputs (if WRITE_ALL_CBUFS isn't enabled). */
if (!key->ps.part.epilog.last_cbuf) {
key->ps.part.epilog.spi_shader_col_format &= sel->info.colors_written_4bit;
key->ps.part.epilog.color_is_int8 &= sel->info.colors_written;
key->ps.part.epilog.color_is_int10 &= sel->info.colors_written;
}
/* Eliminate shader code computing output values that are unused.
* This enables dead code elimination between shader parts.
* Check if any output is eliminated.
*
* Dual source blending never has color buffer 1 enabled, so ignore it.
*
* On gfx11, pixel shaders that write memory should be compiled with an inlined epilog,
* so that the compiler can see s_endpgm and deallocates VGPRs before memory stores return.
*/
if (sel->info.colors_written_4bit &
(blend->dual_src_blend ? 0xffffff0f : 0xffffffff) &
~(sctx->framebuffer.colorbuf_enabled_4bit & blend->cb_target_enabled_4bit))
key->ps.opt.prefer_mono = 1;
else if (sctx->gfx_level >= GFX11 && sel->info.base.writes_memory)
key->ps.opt.prefer_mono = 1;
else
key->ps.opt.prefer_mono = 0;
}
void si_ps_key_update_blend_rasterizer(struct si_context *sctx)
{
union si_shader_key *key = &sctx->shader.ps.key;
struct si_state_blend *blend = sctx->queued.named.blend;
struct si_state_rasterizer *rs = sctx->queued.named.rasterizer;
struct si_shader_selector *ps = sctx->shader.ps.cso;
if (!ps)
return;
key->ps.part.epilog.alpha_to_one = blend->alpha_to_one && rs->multisample_enable;
key->ps.part.epilog.alpha_to_coverage_via_mrtz =
sctx->gfx_level >= GFX11 && blend->alpha_to_coverage && rs->multisample_enable &&
(ps->info.writes_z || ps->info.writes_stencil || ps->info.writes_samplemask);
}
void si_ps_key_update_rasterizer(struct si_context *sctx)
{
struct si_shader_selector *sel = sctx->shader.ps.cso;
union si_shader_key *key = &sctx->shader.ps.key;
struct si_state_rasterizer *rs = sctx->queued.named.rasterizer;
if (!sel)
return;
key->ps.part.prolog.color_two_side = rs->two_side && sel->info.colors_read;
key->ps.part.prolog.flatshade_colors = rs->flatshade && sel->info.uses_interp_color;
key->ps.part.epilog.clamp_color = rs->clamp_fragment_color;
}
void si_ps_key_update_dsa(struct si_context *sctx)
{
union si_shader_key *key = &sctx->shader.ps.key;
key->ps.part.epilog.alpha_func = sctx->queued.named.dsa->alpha_func;
}
static void si_ps_key_update_primtype_shader_rasterizer_framebuffer(struct si_context *sctx)
{
union si_shader_key *key = &sctx->shader.ps.key;
struct si_state_rasterizer *rs = sctx->queued.named.rasterizer;
bool is_poly = !util_prim_is_points_or_lines(sctx->current_rast_prim);
bool is_line = util_prim_is_lines(sctx->current_rast_prim);
key->ps.part.prolog.poly_stipple = rs->poly_stipple_enable && is_poly;
key->ps.mono.poly_line_smoothing =
((is_poly && rs->poly_smooth) || (is_line && rs->line_smooth)) &&
sctx->framebuffer.nr_samples <= 1;
key->ps.mono.point_smoothing = rs->point_smooth &&
sctx->current_rast_prim == PIPE_PRIM_POINTS;
}
void si_ps_key_update_sample_shading(struct si_context *sctx)
{
struct si_shader_selector *sel = sctx->shader.ps.cso;
union si_shader_key *key = &sctx->shader.ps.key;
if (!sel)
return;
if (sctx->ps_iter_samples > 1 && sel->info.reads_samplemask)
key->ps.part.prolog.samplemask_log_ps_iter = util_logbase2(sctx->ps_iter_samples);
else
key->ps.part.prolog.samplemask_log_ps_iter = 0;
}
void si_ps_key_update_framebuffer_rasterizer_sample_shading(struct si_context *sctx)
{
struct si_shader_selector *sel = sctx->shader.ps.cso;
union si_shader_key *key = &sctx->shader.ps.key;
struct si_state_rasterizer *rs = sctx->queued.named.rasterizer;
if (!sel)
return;
bool uses_persp_center = sel->info.uses_persp_center ||
(!rs->flatshade && sel->info.uses_persp_center_color);
bool uses_persp_centroid = sel->info.uses_persp_centroid ||
(!rs->flatshade && sel->info.uses_persp_centroid_color);
bool uses_persp_sample = sel->info.uses_persp_sample ||
(!rs->flatshade && sel->info.uses_persp_sample_color);
if (rs->force_persample_interp && rs->multisample_enable &&
sctx->framebuffer.nr_samples > 1 && sctx->ps_iter_samples > 1) {
key->ps.part.prolog.force_persp_sample_interp =
uses_persp_center || uses_persp_centroid;
key->ps.part.prolog.force_linear_sample_interp =
sel->info.uses_linear_center || sel->info.uses_linear_centroid;
key->ps.part.prolog.force_persp_center_interp = 0;
key->ps.part.prolog.force_linear_center_interp = 0;
key->ps.part.prolog.bc_optimize_for_persp = 0;
key->ps.part.prolog.bc_optimize_for_linear = 0;
key->ps.mono.interpolate_at_sample_force_center = 0;
} else if (rs->multisample_enable && sctx->framebuffer.nr_samples > 1) {
key->ps.part.prolog.force_persp_sample_interp = 0;
key->ps.part.prolog.force_linear_sample_interp = 0;
key->ps.part.prolog.force_persp_center_interp = 0;
key->ps.part.prolog.force_linear_center_interp = 0;
key->ps.part.prolog.bc_optimize_for_persp =
uses_persp_center && uses_persp_centroid;
key->ps.part.prolog.bc_optimize_for_linear =
sel->info.uses_linear_center && sel->info.uses_linear_centroid;
key->ps.mono.interpolate_at_sample_force_center = 0;
} else {
key->ps.part.prolog.force_persp_sample_interp = 0;
key->ps.part.prolog.force_linear_sample_interp = 0;
/* Make sure SPI doesn't compute more than 1 pair
* of (i,j), which is the optimization here. */
key->ps.part.prolog.force_persp_center_interp = uses_persp_center +
uses_persp_centroid +
uses_persp_sample > 1;
key->ps.part.prolog.force_linear_center_interp = sel->info.uses_linear_center +
sel->info.uses_linear_centroid +
sel->info.uses_linear_sample > 1;
key->ps.part.prolog.bc_optimize_for_persp = 0;
key->ps.part.prolog.bc_optimize_for_linear = 0;
key->ps.mono.interpolate_at_sample_force_center = sel->info.uses_interp_at_sample;
}
}
/* Compute the key for the hw shader variant */
static inline void si_shader_selector_key(struct pipe_context *ctx, struct si_shader_selector *sel,
union si_shader_key *key)
{
struct si_context *sctx = (struct si_context *)ctx;
switch (sel->stage) {
case MESA_SHADER_VERTEX:
if (!sctx->shader.tes.cso && !sctx->shader.gs.cso)
si_get_vs_key_outputs(sctx, sel, key);
else
si_clear_vs_key_outputs(sctx, sel, key);
break;
case MESA_SHADER_TESS_CTRL:
if (sctx->gfx_level >= GFX9) {
si_get_vs_key_inputs(sctx, key, &key->ge.part.tcs.ls_prolog);
key->ge.part.tcs.ls = sctx->shader.vs.cso;
}
break;
case MESA_SHADER_TESS_EVAL:
if (!sctx->shader.gs.cso)
si_get_vs_key_outputs(sctx, sel, key);
else
si_clear_vs_key_outputs(sctx, sel, key);
break;
case MESA_SHADER_GEOMETRY:
if (sctx->gfx_level >= GFX9) {
if (sctx->shader.tes.cso) {
si_clear_vs_key_inputs(sctx, key, &key->ge.part.gs.vs_prolog);
key->ge.part.gs.es = sctx->shader.tes.cso;
} else {
si_get_vs_key_inputs(sctx, key, &key->ge.part.gs.vs_prolog);
key->ge.part.gs.es = sctx->shader.vs.cso;
}
/* Only NGG can eliminate GS outputs, because the code is shared with VS. */
if (sctx->ngg)
si_get_vs_key_outputs(sctx, sel, key);
else
si_clear_vs_key_outputs(sctx, sel, key);
}
break;
case MESA_SHADER_FRAGMENT:
si_ps_key_update_primtype_shader_rasterizer_framebuffer(sctx);
break;
default:
assert(0);
}
}
static void si_build_shader_variant(struct si_shader *shader, int thread_index, bool low_priority)
{
struct si_shader_selector *sel = shader->selector;
struct si_screen *sscreen = sel->screen;
struct ac_llvm_compiler *compiler;
struct util_debug_callback *debug = &shader->compiler_ctx_state.debug;
if (thread_index >= 0) {
if (low_priority) {
assert(thread_index < (int)ARRAY_SIZE(sscreen->compiler_lowp));
compiler = &sscreen->compiler_lowp[thread_index];
} else {
assert(thread_index < (int)ARRAY_SIZE(sscreen->compiler));
compiler = &sscreen->compiler[thread_index];
}
if (!debug->async)
debug = NULL;
} else {
assert(!low_priority);
compiler = shader->compiler_ctx_state.compiler;
}
if (!compiler->passes)
si_init_compiler(sscreen, compiler);
if (unlikely(!si_create_shader_variant(sscreen, compiler, shader, debug))) {
PRINT_ERR("Failed to build shader variant (type=%u)\n", sel->stage);
shader->compilation_failed = true;
return;
}
if (shader->compiler_ctx_state.is_debug_context) {
FILE *f = open_memstream(&shader->shader_log, &shader->shader_log_size);
if (f) {
si_shader_dump(sscreen, shader, NULL, f, false);
fclose(f);
}
}
si_shader_init_pm4_state(sscreen, shader);
}
static void si_build_shader_variant_low_priority(void *job, void *gdata, int thread_index)
{
struct si_shader *shader = (struct si_shader *)job;
assert(thread_index >= 0);
si_build_shader_variant(shader, thread_index, true);
}
/* This should be const, but C++ doesn't allow implicit zero-initialization with const. */
static union si_shader_key zeroed;
static bool si_check_missing_main_part(struct si_screen *sscreen, struct si_shader_selector *sel,
struct si_compiler_ctx_state *compiler_state,
const union si_shader_key *key)
{
struct si_shader **mainp = si_get_main_shader_part(sel, key);
if (!*mainp) {
struct si_shader *main_part = CALLOC_STRUCT(si_shader);
if (!main_part)
return false;
/* We can leave the fence as permanently signaled because the
* main part becomes visible globally only after it has been
* compiled. */
util_queue_fence_init(&main_part->ready);
main_part->selector = sel;
if (sel->stage <= MESA_SHADER_GEOMETRY) {
main_part->key.ge.as_es = key->ge.as_es;
main_part->key.ge.as_ls = key->ge.as_ls;
main_part->key.ge.as_ngg = key->ge.as_ngg;
}
main_part->is_monolithic = false;
main_part->wave_size = si_determine_wave_size(sscreen, main_part);
if (!si_compile_shader(sscreen, compiler_state->compiler, main_part,
&compiler_state->debug)) {
FREE(main_part);
return false;
}
*mainp = main_part;
}
return true;
}
/* A helper to copy *key to *local_key and return local_key. */
template<typename SHADER_KEY_TYPE>
static ALWAYS_INLINE const SHADER_KEY_TYPE *
use_local_key_copy(const SHADER_KEY_TYPE *key, SHADER_KEY_TYPE *local_key, unsigned key_size)
{
if (key != local_key)
memcpy(local_key, key, key_size);
return local_key;
}
#define NO_INLINE_UNIFORMS false
/**
* Select a shader variant according to the shader key.
*
* This uses a C++ template to compute the optimal memcmp size at compile time, which is important
* for getting inlined memcmp. The memcmp size depends on the shader key type and whether inlined
* uniforms are enabled.
*/
template<bool INLINE_UNIFORMS = true, typename SHADER_KEY_TYPE>
static int si_shader_select_with_key(struct si_context *sctx, struct si_shader_ctx_state *state,
const SHADER_KEY_TYPE *key)
{
struct si_screen *sscreen = sctx->screen;
struct si_shader_selector *sel = state->cso;
struct si_shader_selector *previous_stage_sel = NULL;
struct si_shader *current = state->current;
struct si_shader *shader = NULL;
const SHADER_KEY_TYPE *zeroed_key = (SHADER_KEY_TYPE*)&zeroed;
/* "opt" must be the last field and "inlined_uniform_values" must be the last field inside opt.
* If there is padding, insert the padding manually before opt or inside opt.
*/
STATIC_ASSERT(offsetof(SHADER_KEY_TYPE, opt) + sizeof(key->opt) == sizeof(*key));
STATIC_ASSERT(offsetof(SHADER_KEY_TYPE, opt.inlined_uniform_values) +
sizeof(key->opt.inlined_uniform_values) == sizeof(*key));
const unsigned key_size_no_uniforms = sizeof(*key) - sizeof(key->opt.inlined_uniform_values);
/* Don't compare inlined_uniform_values if uniform inlining is disabled. */
const unsigned key_size = INLINE_UNIFORMS ? sizeof(*key) : key_size_no_uniforms;
const unsigned key_opt_size =
INLINE_UNIFORMS ? sizeof(key->opt) :
sizeof(key->opt) - sizeof(key->opt.inlined_uniform_values);
/* si_shader_select_with_key must not modify 'key' because it would affect future shaders.
* If we need to modify it for this specific shader (eg: to disable optimizations), we
* use a copy.
*/
SHADER_KEY_TYPE local_key;
if (unlikely(sscreen->debug_flags & DBG(NO_OPT_VARIANT))) {
/* Disable shader variant optimizations. */
key = use_local_key_copy<SHADER_KEY_TYPE>(key, &local_key, key_size);
memset(&local_key.opt, 0, key_opt_size);
}
again:
/* Check if we don't need to change anything.
* This path is also used for most shaders that don't need multiple
* variants, it will cost just a computation of the key and this
* test. */
if (likely(current && memcmp(&current->key, key, key_size) == 0)) {
if (unlikely(!util_queue_fence_is_signalled(&current->ready))) {
if (current->is_optimized) {
key = use_local_key_copy(key, &local_key, key_size);
memset(&local_key.opt, 0, key_opt_size);
goto current_not_ready;
}
util_queue_fence_wait(&current->ready);
}
return current->compilation_failed ? -1 : 0;
}
current_not_ready:
/* This must be done before the mutex is locked, because async GS
* compilation calls this function too, and therefore must enter
* the mutex first.
*/
util_queue_fence_wait(&sel->ready);
simple_mtx_lock(&sel->mutex);
int variant_count = 0;
const int max_inline_uniforms_variants = 5;
/* Find the shader variant. */
const unsigned cnt = sel->variants_count;
for (unsigned i = 0; i < cnt; i++) {
const SHADER_KEY_TYPE *iter_key = (const SHADER_KEY_TYPE *)&sel->keys[i];
if (memcmp(iter_key, key, key_size_no_uniforms) == 0) {
struct si_shader *iter = sel->variants[i];
/* Check the inlined uniform values separately, and count
* the number of variants based on them.
*/
if (key->opt.inline_uniforms &&
memcmp(iter_key->opt.inlined_uniform_values,
key->opt.inlined_uniform_values,
MAX_INLINABLE_UNIFORMS * 4) != 0) {
if (variant_count++ > max_inline_uniforms_variants) {
key = use_local_key_copy(key, &local_key, key_size);
/* Too many variants. Disable inlining for this shader. */
local_key.opt.inline_uniforms = 0;
memset(local_key.opt.inlined_uniform_values, 0, MAX_INLINABLE_UNIFORMS * 4);
simple_mtx_unlock(&sel->mutex);
goto again;
}
continue;
}
simple_mtx_unlock(&sel->mutex);
if (unlikely(!util_queue_fence_is_signalled(&iter->ready))) {
/* If it's an optimized shader and its compilation has
* been started but isn't done, use the unoptimized
* shader so as not to cause a stall due to compilation.
*/
if (iter->is_optimized) {
key = use_local_key_copy(key, &local_key, key_size);
memset(&local_key.opt, 0, key_opt_size);
goto again;
}
util_queue_fence_wait(&iter->ready);
}
if (iter->compilation_failed) {
return -1; /* skip the draw call */
}
state->current = sel->variants[i];
return 0;
}
}
/* Build a new shader. */
shader = CALLOC_STRUCT(si_shader);
if (!shader) {
simple_mtx_unlock(&sel->mutex);
return -ENOMEM;
}
util_queue_fence_init(&shader->ready);
if (!sctx->compiler.passes)
si_init_compiler(sctx->screen, &sctx->compiler);
shader->selector = sel;
*((SHADER_KEY_TYPE*)&shader->key) = *key;
shader->wave_size = si_determine_wave_size(sscreen, shader);
shader->compiler_ctx_state.compiler = &sctx->compiler;
shader->compiler_ctx_state.debug = sctx->debug;
shader->compiler_ctx_state.is_debug_context = sctx->is_debug;
/* If this is a merged shader, get the first shader's selector. */
if (sscreen->info.gfx_level >= GFX9) {
if (sel->stage == MESA_SHADER_TESS_CTRL)
previous_stage_sel = ((struct si_shader_key_ge*)key)->part.tcs.ls;
else if (sel->stage == MESA_SHADER_GEOMETRY)
previous_stage_sel = ((struct si_shader_key_ge*)key)->part.gs.es;
/* We need to wait for the previous shader. */
if (previous_stage_sel)
util_queue_fence_wait(&previous_stage_sel->ready);
}
bool is_pure_monolithic =
sscreen->use_monolithic_shaders || memcmp(&key->mono, &zeroed_key->mono, sizeof(key->mono)) != 0;
/* Compile the main shader part if it doesn't exist. This can happen
* if the initial guess was wrong.
*/
if (!is_pure_monolithic) {
bool ok = true;
/* Make sure the main shader part is present. This is needed
* for shaders that can be compiled as VS, LS, or ES, and only
* one of them is compiled at creation.
*
* It is also needed for GS, which can be compiled as non-NGG
* and NGG.
*
* For merged shaders, check that the starting shader's main
* part is present.
*/
if (previous_stage_sel) {
union si_shader_key shader1_key = zeroed;
if (sel->stage == MESA_SHADER_TESS_CTRL) {
shader1_key.ge.as_ls = 1;
} else if (sel->stage == MESA_SHADER_GEOMETRY) {
shader1_key.ge.as_es = 1;
shader1_key.ge.as_ngg = ((struct si_shader_key_ge*)key)->as_ngg; /* for Wave32 vs Wave64 */
} else {
assert(0);
}
simple_mtx_lock(&previous_stage_sel->mutex);
ok = si_check_missing_main_part(sscreen, previous_stage_sel, &shader->compiler_ctx_state,
&shader1_key);
simple_mtx_unlock(&previous_stage_sel->mutex);
}
if (ok) {
ok = si_check_missing_main_part(sscreen, sel, &shader->compiler_ctx_state,
(union si_shader_key*)key);
}
if (!ok) {
FREE(shader);
simple_mtx_unlock(&sel->mutex);
return -ENOMEM; /* skip the draw call */
}
}
if (sel->variants_count == sel->variants_max_count) {
sel->variants_max_count += 2;
sel->variants = (struct si_shader**)
realloc(sel->variants, sel->variants_max_count * sizeof(struct si_shader*));
sel->keys = (union si_shader_key*)
realloc(sel->keys, sel->variants_max_count * sizeof(union si_shader_key));
}
/* Keep the reference to the 1st shader of merged shaders, so that
* Gallium can't destroy it before we destroy the 2nd shader.
*
* Set sctx = NULL, because it's unused if we're not releasing
* the shader, and we don't have any sctx here.
*/
si_shader_selector_reference(NULL, &shader->previous_stage_sel, previous_stage_sel);
/* Monolithic-only shaders don't make a distinction between optimized
* and unoptimized. */
shader->is_monolithic =
is_pure_monolithic || memcmp(&key->opt, &zeroed_key->opt, key_opt_size) != 0;
shader->is_optimized = !is_pure_monolithic &&
memcmp(&key->opt, &zeroed_key->opt, key_opt_size) != 0;
/* If it's an optimized shader, compile it asynchronously. */
if (shader->is_optimized) {
/* Compile it asynchronously. */
util_queue_add_job(&sscreen->shader_compiler_queue_low_priority, shader, &shader->ready,
si_build_shader_variant_low_priority, NULL, 0);
/* Add only after the ready fence was reset, to guard against a
* race with si_bind_XX_shader. */
sel->variants[sel->variants_count] = shader;
sel->keys[sel->variants_count] = shader->key;
sel->variants_count++;
/* Use the default (unoptimized) shader for now. */
key = use_local_key_copy(key, &local_key, key_size);
memset(&local_key.opt, 0, key_opt_size);
simple_mtx_unlock(&sel->mutex);
if (sscreen->options.sync_compile)
util_queue_fence_wait(&shader->ready);
goto again;
}
/* Reset the fence before adding to the variant list. */
util_queue_fence_reset(&shader->ready);
sel->variants[sel->variants_count] = shader;
sel->keys[sel->variants_count] = shader->key;
sel->variants_count++;
simple_mtx_unlock(&sel->mutex);
assert(!shader->is_optimized);
si_build_shader_variant(shader, -1, false);
util_queue_fence_signal(&shader->ready);
if (!shader->compilation_failed)
state->current = shader;
return shader->compilation_failed ? -1 : 0;
}
int si_shader_select(struct pipe_context *ctx, struct si_shader_ctx_state *state)
{
struct si_context *sctx = (struct si_context *)ctx;
si_shader_selector_key(ctx, state->cso, &state->key);
if (state->cso->stage == MESA_SHADER_FRAGMENT) {
if (state->key.ps.opt.inline_uniforms)
return si_shader_select_with_key(sctx, state, &state->key.ps);
else
return si_shader_select_with_key<NO_INLINE_UNIFORMS>(sctx, state, &state->key.ps);
} else {
if (state->key.ge.opt.inline_uniforms) {
return si_shader_select_with_key(sctx, state, &state->key.ge);
} else {
return si_shader_select_with_key<NO_INLINE_UNIFORMS>(sctx, state, &state->key.ge);
}
}
}
static void si_parse_next_shader_property(const struct si_shader_info *info,
union si_shader_key *key)
{
gl_shader_stage next_shader = info->base.next_stage;
switch (info->base.stage) {
case MESA_SHADER_VERTEX:
switch (next_shader) {
case MESA_SHADER_GEOMETRY:
key->ge.as_es = 1;
break;
case MESA_SHADER_TESS_CTRL:
case MESA_SHADER_TESS_EVAL:
key->ge.as_ls = 1;
break;
default:
/* If POSITION isn't written, it can only be a HW VS
* if streamout is used. If streamout isn't used,
* assume that it's a HW LS. (the next shader is TCS)
* This heuristic is needed for separate shader objects.
*/
if (!info->writes_position && !info->enabled_streamout_buffer_mask)
key->ge.as_ls = 1;
}
break;
case MESA_SHADER_TESS_EVAL:
if (next_shader == MESA_SHADER_GEOMETRY || !info->writes_position)
key->ge.as_es = 1;
break;
default:;
}
}
/**
* Compile the main shader part or the monolithic shader as part of
* si_shader_selector initialization. Since it can be done asynchronously,
* there is no way to report compile failures to applications.
*/
static void si_init_shader_selector_async(void *job, void *gdata, int thread_index)
{
struct si_shader_selector *sel = (struct si_shader_selector *)job;
struct si_screen *sscreen = sel->screen;
struct ac_llvm_compiler *compiler;
struct util_debug_callback *debug = &sel->compiler_ctx_state.debug;
assert(!debug->debug_message || debug->async);
assert(thread_index >= 0);
assert(thread_index < (int)ARRAY_SIZE(sscreen->compiler));
compiler = &sscreen->compiler[thread_index];
if (!compiler->passes)
si_init_compiler(sscreen, compiler);
/* Serialize NIR to save memory. Monolithic shader variants
* have to deserialize NIR before compilation.
*/
if (sel->nir) {
struct blob blob;
size_t size;
blob_init(&blob);
/* true = remove optional debugging data to increase
* the likehood of getting more shader cache hits.
* It also drops variable names, so we'll save more memory.
* If NIR debug prints are used we don't strip to get more
* useful logs.
*/
nir_serialize(&blob, sel->nir, NIR_DEBUG(PRINT) == 0);
blob_finish_get_buffer(&blob, &sel->nir_binary, &size);
sel->nir_size = size;
}
/* Compile the main shader part for use with a prolog and/or epilog.
* If this fails, the driver will try to compile a monolithic shader
* on demand.
*/
if (!sscreen->use_monolithic_shaders) {
struct si_shader *shader = CALLOC_STRUCT(si_shader);
unsigned char ir_sha1_cache_key[20];
if (!shader) {
fprintf(stderr, "radeonsi: can't allocate a main shader part\n");
return;
}
/* We can leave the fence signaled because use of the default
* main part is guarded by the selector's ready fence. */
util_queue_fence_init(&shader->ready);
shader->selector = sel;
shader->is_monolithic = false;
si_parse_next_shader_property(&sel->info, &shader->key);
if (sel->stage <= MESA_SHADER_GEOMETRY &&
sscreen->use_ngg && (!sel->info.enabled_streamout_buffer_mask ||
sscreen->use_ngg_streamout) &&
((sel->stage == MESA_SHADER_VERTEX && !shader->key.ge.as_ls) ||
sel->stage == MESA_SHADER_TESS_EVAL || sel->stage == MESA_SHADER_GEOMETRY))
shader->key.ge.as_ngg = 1;
shader->wave_size = si_determine_wave_size(sscreen, shader);
if (sel->nir) {
if (sel->stage <= MESA_SHADER_GEOMETRY) {
si_get_ir_cache_key(sel, shader->key.ge.as_ngg, shader->key.ge.as_es,
shader->wave_size, ir_sha1_cache_key);
} else {
si_get_ir_cache_key(sel, false, false, shader->wave_size, ir_sha1_cache_key);
}
}
/* Try to load the shader from the shader cache. */
simple_mtx_lock(&sscreen->shader_cache_mutex);
if (si_shader_cache_load_shader(sscreen, ir_sha1_cache_key, shader)) {
simple_mtx_unlock(&sscreen->shader_cache_mutex);
si_shader_dump_stats_for_shader_db(sscreen, shader, debug);
} else {
simple_mtx_unlock(&sscreen->shader_cache_mutex);
/* Compile the shader if it hasn't been loaded from the cache. */
if (!si_compile_shader(sscreen, compiler, shader, debug)) {
FREE(shader);
fprintf(stderr, "radeonsi: can't compile a main shader part\n");
return;
}
simple_mtx_lock(&sscreen->shader_cache_mutex);
si_shader_cache_insert_shader(sscreen, ir_sha1_cache_key, shader, true);
simple_mtx_unlock(&sscreen->shader_cache_mutex);
}
*si_get_main_shader_part(sel, &shader->key) = shader;
/* Unset "outputs_written" flags for outputs converted to
* DEFAULT_VAL, so that later inter-shader optimizations don't
* try to eliminate outputs that don't exist in the final
* shader.
*
* This is only done if non-monolithic shaders are enabled.
*/
if ((sel->stage == MESA_SHADER_VERTEX ||
sel->stage == MESA_SHADER_TESS_EVAL ||
sel->stage == MESA_SHADER_GEOMETRY) &&
!shader->key.ge.as_ls && !shader->key.ge.as_es) {
unsigned i;
for (i = 0; i < sel->info.num_outputs; i++) {
unsigned semantic = sel->info.output_semantic[i];
unsigned ps_input_cntl = shader->info.vs_output_ps_input_cntl[semantic];
/* OFFSET=0x20 means DEFAULT_VAL, which means VS doesn't export it. */
if (G_028644_OFFSET(ps_input_cntl) != 0x20)
continue;
unsigned id;
/* Remove the output from the mask. */
if ((semantic <= VARYING_SLOT_VAR31 || semantic >= VARYING_SLOT_VAR0_16BIT) &&
semantic != VARYING_SLOT_POS &&
semantic != VARYING_SLOT_PSIZ &&
semantic != VARYING_SLOT_CLIP_VERTEX &&
semantic != VARYING_SLOT_EDGE) {
id = si_shader_io_get_unique_index(semantic, true);
sel->info.outputs_written_before_ps &= ~(1ull << id);
}
}
}
}
/* Free NIR. We only keep serialized NIR after this point. */
if (sel->nir) {
ralloc_free(sel->nir);
sel->nir = NULL;
}
}
void si_schedule_initial_compile(struct si_context *sctx, gl_shader_stage stage,
struct util_queue_fence *ready_fence,
struct si_compiler_ctx_state *compiler_ctx_state, void *job,
util_queue_execute_func execute)
{
util_queue_fence_init(ready_fence);
struct util_async_debug_callback async_debug;
bool debug = (sctx->debug.debug_message && !sctx->debug.async) || sctx->is_debug ||
si_can_dump_shader(sctx->screen, stage);
if (debug) {
u_async_debug_init(&async_debug);
compiler_ctx_state->debug = async_debug.base;
}
util_queue_add_job(&sctx->screen->shader_compiler_queue, job, ready_fence, execute, NULL, 0);
if (debug) {
util_queue_fence_wait(ready_fence);
u_async_debug_drain(&async_debug, &sctx->debug);
u_async_debug_cleanup(&async_debug);
}
if (sctx->screen->options.sync_compile)
util_queue_fence_wait(ready_fence);
}
/* Return descriptor slot usage masks from the given shader info. */
void si_get_active_slot_masks(struct si_screen *sscreen, const struct si_shader_info *info,
uint64_t *const_and_shader_buffers, uint64_t *samplers_and_images)
{
unsigned start, num_shaderbufs, num_constbufs, num_images, num_msaa_images, num_samplers;
num_shaderbufs = info->base.num_ssbos;
num_constbufs = info->base.num_ubos;
/* two 8-byte images share one 16-byte slot */
num_images = align(info->base.num_images, 2);
num_msaa_images = align(BITSET_LAST_BIT(info->base.msaa_images), 2);
num_samplers = BITSET_LAST_BIT(info->base.textures_used);
/* The layout is: sb[last] ... sb[0], cb[0] ... cb[last] */
start = si_get_shaderbuf_slot(num_shaderbufs - 1);
*const_and_shader_buffers = u_bit_consecutive64(start, num_shaderbufs + num_constbufs);
/* The layout is:
* - fmask[last] ... fmask[0] go to [15-last .. 15]
* - image[last] ... image[0] go to [31-last .. 31]
* - sampler[0] ... sampler[last] go to [32 .. 32+last*2]
*
* FMASKs for images are placed separately, because MSAA images are rare,
* and so we can benefit from a better cache hit rate if we keep image
* descriptors together.
*/
if (sscreen->info.gfx_level < GFX11 && num_msaa_images)
num_images = SI_NUM_IMAGES + num_msaa_images; /* add FMASK descriptors */
start = si_get_image_slot(num_images - 1) / 2;
*samplers_and_images = u_bit_consecutive64(start, num_images / 2 + num_samplers);
}
static void *si_create_shader_selector(struct pipe_context *ctx,
const struct pipe_shader_state *state)
{
struct si_screen *sscreen = (struct si_screen *)ctx->screen;
struct si_context *sctx = (struct si_context *)ctx;
struct si_shader_selector *sel = CALLOC_STRUCT(si_shader_selector);
if (!sel)
return NULL;
sel->screen = sscreen;
sel->compiler_ctx_state.debug = sctx->debug;
sel->compiler_ctx_state.is_debug_context = sctx->is_debug;
sel->variants_max_count = 2;
sel->keys = (union si_shader_key *)
realloc(NULL, sel->variants_max_count * sizeof(union si_shader_key));
sel->variants = (struct si_shader **)
realloc(NULL, sel->variants_max_count * sizeof(struct si_shader *));
if (state->type == PIPE_SHADER_IR_TGSI) {
sel->nir = tgsi_to_nir(state->tokens, ctx->screen, true);
} else {
assert(state->type == PIPE_SHADER_IR_NIR);
sel->nir = (nir_shader*)state->ir.nir;
}
si_nir_scan_shader(sscreen, sel->nir, &sel->info);
sel->stage = sel->nir->info.stage;
const enum pipe_shader_type type = pipe_shader_type_from_mesa(sel->stage);
sel->pipe_shader_type = type;
sel->const_and_shader_buf_descriptors_index =
si_const_and_shader_buffer_descriptors_idx(type);
sel->sampler_and_images_descriptors_index =
si_sampler_and_image_descriptors_idx(type);
p_atomic_inc(&sscreen->num_shaders_created);
si_get_active_slot_masks(sscreen, &sel->info, &sel->active_const_and_shader_buffers,
&sel->active_samplers_and_images);
switch (sel->stage) {
case MESA_SHADER_GEOMETRY:
/* Only possibilities: POINTS, LINE_STRIP, TRIANGLES */
sel->rast_prim = (enum pipe_prim_type)sel->info.base.gs.output_primitive;
if (util_rast_prim_is_triangles(sel->rast_prim))
sel->rast_prim = PIPE_PRIM_TRIANGLES;
/* EN_MAX_VERT_OUT_PER_GS_INSTANCE does not work with tesselation so
* we can't split workgroups. Disable ngg if any of the following conditions is true:
* - num_invocations * gs.vertices_out > 256
* - LDS usage is too high
*/
sel->tess_turns_off_ngg = sscreen->info.gfx_level >= GFX10 &&
sscreen->info.gfx_level <= GFX10_3 &&
(sel->info.base.gs.invocations * sel->info.base.gs.vertices_out > 256 ||
sel->info.base.gs.invocations * sel->info.base.gs.vertices_out *
(sel->info.num_outputs * 4 + 1) > 6500 /* max dw per GS primitive */);
break;
case MESA_SHADER_VERTEX:
case MESA_SHADER_TESS_EVAL:
if (sel->stage == MESA_SHADER_TESS_EVAL) {
if (sel->info.base.tess.point_mode)
sel->rast_prim = PIPE_PRIM_POINTS;
else if (sel->info.base.tess._primitive_mode == TESS_PRIMITIVE_ISOLINES)
sel->rast_prim = PIPE_PRIM_LINE_STRIP;
else
sel->rast_prim = PIPE_PRIM_TRIANGLES;
} else {
sel->rast_prim = PIPE_PRIM_TRIANGLES;
}
break;
default:;
}
bool ngg_culling_allowed =
sscreen->info.gfx_level >= GFX10 &&
sscreen->use_ngg_culling &&
sel->info.writes_position &&
!sel->info.writes_viewport_index && /* cull only against viewport 0 */
!sel->info.base.writes_memory &&
/* NGG GS supports culling with streamout because it culls after streamout. */
(sel->stage == MESA_SHADER_GEOMETRY || !sel->info.enabled_streamout_buffer_mask) &&
(sel->stage != MESA_SHADER_GEOMETRY || sel->info.num_stream_output_components[0]) &&
(sel->stage != MESA_SHADER_VERTEX ||
(!sel->info.base.vs.blit_sgprs_amd &&
!sel->info.base.vs.window_space_position));
sel->ngg_cull_vert_threshold = UINT_MAX; /* disabled (changed below) */
if (ngg_culling_allowed) {
if (sel->stage == MESA_SHADER_VERTEX) {
if (sscreen->debug_flags & DBG(ALWAYS_NGG_CULLING_ALL))
sel->ngg_cull_vert_threshold = 0; /* always enabled */
else
sel->ngg_cull_vert_threshold = 128;
} else if (sel->stage == MESA_SHADER_TESS_EVAL ||
sel->stage == MESA_SHADER_GEOMETRY) {
if (sel->rast_prim != PIPE_PRIM_POINTS)
sel->ngg_cull_vert_threshold = 0; /* always enabled */
}
}
(void)simple_mtx_init(&sel->mutex, mtx_plain);
si_schedule_initial_compile(sctx, sel->stage, &sel->ready, &sel->compiler_ctx_state,
sel, si_init_shader_selector_async);
return sel;
}
static void *si_create_shader(struct pipe_context *ctx, const struct pipe_shader_state *state)
{
struct si_context *sctx = (struct si_context *)ctx;
struct si_screen *sscreen = (struct si_screen *)ctx->screen;
bool cache_hit;
struct si_shader_selector *sel = (struct si_shader_selector *)util_live_shader_cache_get(
ctx, &sscreen->live_shader_cache, state, &cache_hit);
if (sel && cache_hit && sctx->debug.debug_message) {
if (sel->main_shader_part)
si_shader_dump_stats_for_shader_db(sscreen, sel->main_shader_part, &sctx->debug);
if (sel->main_shader_part_ls)
si_shader_dump_stats_for_shader_db(sscreen, sel->main_shader_part_ls, &sctx->debug);
if (sel->main_shader_part_es)
si_shader_dump_stats_for_shader_db(sscreen, sel->main_shader_part_es, &sctx->debug);
if (sel->main_shader_part_ngg)
si_shader_dump_stats_for_shader_db(sscreen, sel->main_shader_part_ngg, &sctx->debug);
if (sel->main_shader_part_ngg_es)
si_shader_dump_stats_for_shader_db(sscreen, sel->main_shader_part_ngg_es, &sctx->debug);
}
return sel;
}
static void si_update_streamout_state(struct si_context *sctx)
{
struct si_shader_selector *shader_with_so = si_get_vs(sctx)->cso;
if (!shader_with_so)
return;
sctx->streamout.enabled_stream_buffers_mask = shader_with_so->info.enabled_streamout_buffer_mask;
sctx->streamout.stride_in_dw = shader_with_so->info.base.xfb_stride;
/* GDS must be allocated when any GDS instructions are used, otherwise it hangs. */
if (sctx->screen->use_ngg_streamout && shader_with_so->info.enabled_streamout_buffer_mask)
si_allocate_gds(sctx);
}
static void si_update_clip_regs(struct si_context *sctx, struct si_shader_selector *old_hw_vs,
struct si_shader *old_hw_vs_variant,
struct si_shader_selector *next_hw_vs,
struct si_shader *next_hw_vs_variant)
{
if (next_hw_vs &&
(!old_hw_vs ||
(old_hw_vs->stage == MESA_SHADER_VERTEX && old_hw_vs->info.base.vs.window_space_position) !=
(next_hw_vs->stage == MESA_SHADER_VERTEX && next_hw_vs->info.base.vs.window_space_position) ||
old_hw_vs->info.clipdist_mask != next_hw_vs->info.clipdist_mask ||
old_hw_vs->info.culldist_mask != next_hw_vs->info.culldist_mask || !old_hw_vs_variant ||
!next_hw_vs_variant ||
old_hw_vs_variant->pa_cl_vs_out_cntl != next_hw_vs_variant->pa_cl_vs_out_cntl))
si_mark_atom_dirty(sctx, &sctx->atoms.s.clip_regs);
}
static void si_update_rasterized_prim(struct si_context *sctx)
{
enum pipe_prim_type rast_prim;
if (sctx->shader.gs.cso) {
/* Only possibilities: POINTS, LINE_STRIP, TRIANGLES */
rast_prim = sctx->shader.gs.cso->rast_prim;
} else if (sctx->shader.tes.cso) {
/* Only possibilities: POINTS, LINE_STRIP, TRIANGLES */
rast_prim = sctx->shader.tes.cso->rast_prim;
} else {
/* Determined by draw calls. */
return;
}
if (rast_prim != sctx->current_rast_prim) {
if (util_prim_is_points_or_lines(sctx->current_rast_prim) !=
util_prim_is_points_or_lines(rast_prim))
si_mark_atom_dirty(sctx, &sctx->atoms.s.guardband);
sctx->current_rast_prim = rast_prim;
}
}
static void si_update_common_shader_state(struct si_context *sctx, struct si_shader_selector *sel,
enum pipe_shader_type type)
{
si_set_active_descriptors_for_shader(sctx, sel);
sctx->uses_bindless_samplers = si_shader_uses_bindless_samplers(sctx->shader.vs.cso) ||
si_shader_uses_bindless_samplers(sctx->shader.gs.cso) ||
si_shader_uses_bindless_samplers(sctx->shader.ps.cso) ||
si_shader_uses_bindless_samplers(sctx->shader.tcs.cso) ||
si_shader_uses_bindless_samplers(sctx->shader.tes.cso);
sctx->uses_bindless_images = si_shader_uses_bindless_images(sctx->shader.vs.cso) ||
si_shader_uses_bindless_images(sctx->shader.gs.cso) ||
si_shader_uses_bindless_images(sctx->shader.ps.cso) ||
si_shader_uses_bindless_images(sctx->shader.tcs.cso) ||
si_shader_uses_bindless_images(sctx->shader.tes.cso);
if (type == PIPE_SHADER_VERTEX || type == PIPE_SHADER_TESS_EVAL || type == PIPE_SHADER_GEOMETRY)
sctx->ngg_culling = 0; /* this will be enabled on the first draw if needed */
si_invalidate_inlinable_uniforms(sctx, type);
sctx->do_update_shaders = true;
}
static void si_bind_vs_shader(struct pipe_context *ctx, void *state)
{
struct si_context *sctx = (struct si_context *)ctx;
struct si_shader_selector *old_hw_vs = si_get_vs(sctx)->cso;
struct si_shader *old_hw_vs_variant = si_get_vs(sctx)->current;
struct si_shader_selector *sel = (struct si_shader_selector*)state;
if (sctx->shader.vs.cso == sel)
return;
sctx->shader.vs.cso = sel;
sctx->shader.vs.current = (sel && sel->variants_count) ? sel->variants[0] : NULL;
sctx->num_vs_blit_sgprs = sel ? sel->info.base.vs.blit_sgprs_amd : 0;
sctx->vs_uses_draw_id = sel ? sel->info.uses_drawid : false;
if (si_update_ngg(sctx))
si_shader_change_notify(sctx);
si_update_common_shader_state(sctx, sel, PIPE_SHADER_VERTEX);
si_select_draw_vbo(sctx);
si_update_vs_viewport_state(sctx);
si_update_streamout_state(sctx);
si_update_clip_regs(sctx, old_hw_vs, old_hw_vs_variant, si_get_vs(sctx)->cso,
si_get_vs(sctx)->current);
si_update_rasterized_prim(sctx);
si_vs_key_update_inputs(sctx);
if (sctx->screen->dpbb_allowed) {
bool force_off = sel && sel->info.options & SI_PROFILE_VS_NO_BINNING;
if (force_off != sctx->dpbb_force_off_profile_vs) {
sctx->dpbb_force_off_profile_vs = force_off;
si_mark_atom_dirty(sctx, &sctx->atoms.s.dpbb_state);
}
}
}
static void si_update_tess_uses_prim_id(struct si_context *sctx)
{
sctx->ia_multi_vgt_param_key.u.tess_uses_prim_id =
(sctx->shader.tes.cso && sctx->shader.tes.cso->info.uses_primid) ||
(sctx->shader.tcs.cso && sctx->shader.tcs.cso->info.uses_primid) ||
(sctx->shader.gs.cso && sctx->shader.gs.cso->info.uses_primid) ||
(sctx->shader.ps.cso && !sctx->shader.gs.cso && sctx->shader.ps.cso->info.uses_primid);
}
bool si_update_ngg(struct si_context *sctx)
{
if (!sctx->screen->use_ngg) {
assert(!sctx->ngg);
return false;
}
bool new_ngg = true;
if (sctx->shader.gs.cso && sctx->shader.tes.cso && sctx->shader.gs.cso->tess_turns_off_ngg) {
new_ngg = false;
} else if (!sctx->screen->use_ngg_streamout) {
struct si_shader_selector *last = si_get_vs(sctx)->cso;
if ((last && last->info.enabled_streamout_buffer_mask) ||
sctx->streamout.prims_gen_query_enabled)
new_ngg = false;
}
if (new_ngg != sctx->ngg) {
/* Transitioning from NGG to legacy GS requires VGT_FLUSH on Navi10-14.
* VGT_FLUSH is also emitted at the beginning of IBs when legacy GS ring
* pointers are set.
*/
if (sctx->screen->info.has_vgt_flush_ngg_legacy_bug && !new_ngg) {
sctx->flags |= SI_CONTEXT_VGT_FLUSH;
if (sctx->gfx_level == GFX10) {
/* Workaround for https://gitlab.freedesktop.org/mesa/mesa/-/issues/2941 */
si_flush_gfx_cs(sctx, RADEON_FLUSH_ASYNC_START_NEXT_GFX_IB_NOW, NULL);
}
}
sctx->ngg = new_ngg;
sctx->last_gs_out_prim = -1; /* reset this so that it gets updated */
si_select_draw_vbo(sctx);
return true;
}
return false;
}
static void si_bind_gs_shader(struct pipe_context *ctx, void *state)
{
struct si_context *sctx = (struct si_context *)ctx;
struct si_shader_selector *old_hw_vs = si_get_vs(sctx)->cso;
struct si_shader *old_hw_vs_variant = si_get_vs(sctx)->current;
struct si_shader_selector *sel = (struct si_shader_selector*)state;
bool enable_changed = !!sctx->shader.gs.cso != !!sel;
bool ngg_changed;
if (sctx->shader.gs.cso == sel)
return;
sctx->shader.gs.cso = sel;
sctx->shader.gs.current = (sel && sel->variants_count) ? sel->variants[0] : NULL;
sctx->ia_multi_vgt_param_key.u.uses_gs = sel != NULL;
si_update_common_shader_state(sctx, sel, PIPE_SHADER_GEOMETRY);
si_select_draw_vbo(sctx);
sctx->last_gs_out_prim = -1; /* reset this so that it gets updated */
ngg_changed = si_update_ngg(sctx);
if (ngg_changed || enable_changed)
si_shader_change_notify(sctx);
if (enable_changed) {
if (sctx->ia_multi_vgt_param_key.u.uses_tess)
si_update_tess_uses_prim_id(sctx);
}
si_update_vs_viewport_state(sctx);
si_update_streamout_state(sctx);
si_update_clip_regs(sctx, old_hw_vs, old_hw_vs_variant, si_get_vs(sctx)->cso,
si_get_vs(sctx)->current);
si_update_rasterized_prim(sctx);
}
static void si_bind_tcs_shader(struct pipe_context *ctx, void *state)
{
struct si_context *sctx = (struct si_context *)ctx;
struct si_shader_selector *sel = (struct si_shader_selector*)state;
bool enable_changed = !!sctx->shader.tcs.cso != !!sel;
/* Note it could happen that user shader sel is same as fixed function shader,
* so we should update this field even sctx->shader.tcs.cso == sel.
*/
sctx->is_user_tcs = !!sel;
if (sctx->shader.tcs.cso == sel)
return;
sctx->shader.tcs.cso = sel;
sctx->shader.tcs.current = (sel && sel->variants_count) ? sel->variants[0] : NULL;
sctx->shader.tcs.key.ge.part.tcs.epilog.invoc0_tess_factors_are_def =
sel ? sel->info.tessfactors_are_def_in_all_invocs : 0;
si_update_tess_uses_prim_id(sctx);
si_update_common_shader_state(sctx, sel, PIPE_SHADER_TESS_CTRL);
if (enable_changed)
sctx->last_tcs = NULL; /* invalidate derived tess state */
}
static void si_bind_tes_shader(struct pipe_context *ctx, void *state)
{
struct si_context *sctx = (struct si_context *)ctx;
struct si_shader_selector *old_hw_vs = si_get_vs(sctx)->cso;
struct si_shader *old_hw_vs_variant = si_get_vs(sctx)->current;
struct si_shader_selector *sel = (struct si_shader_selector*)state;
bool enable_changed = !!sctx->shader.tes.cso != !!sel;
if (sctx->shader.tes.cso == sel)
return;
sctx->shader.tes.cso = sel;
sctx->shader.tes.current = (sel && sel->variants_count) ? sel->variants[0] : NULL;
sctx->ia_multi_vgt_param_key.u.uses_tess = sel != NULL;
si_update_tess_uses_prim_id(sctx);
sctx->shader.tcs.key.ge.part.tcs.epilog.prim_mode =
sel ? sel->info.base.tess._primitive_mode : 0;
sctx->shader.tcs.key.ge.part.tcs.epilog.tes_reads_tess_factors =
sel ? sel->info.reads_tess_factors : 0;
si_update_common_shader_state(sctx, sel, PIPE_SHADER_TESS_EVAL);
si_select_draw_vbo(sctx);
sctx->last_gs_out_prim = -1; /* reset this so that it gets updated */
bool ngg_changed = si_update_ngg(sctx);
if (ngg_changed || enable_changed)
si_shader_change_notify(sctx);
if (enable_changed)
sctx->last_tes_sh_base = -1; /* invalidate derived tess state */
si_update_vs_viewport_state(sctx);
si_update_streamout_state(sctx);
si_update_clip_regs(sctx, old_hw_vs, old_hw_vs_variant, si_get_vs(sctx)->cso,
si_get_vs(sctx)->current);
si_update_rasterized_prim(sctx);
}
void si_update_vrs_flat_shading(struct si_context *sctx)
{
if (sctx->gfx_level >= GFX10_3 && sctx->shader.ps.cso) {
struct si_state_rasterizer *rs = sctx->queued.named.rasterizer;
struct si_shader_info *info = &sctx->shader.ps.cso->info;
bool allow_flat_shading = info->allow_flat_shading;
if (allow_flat_shading &&
(rs->line_smooth || rs->poly_smooth || rs->poly_stipple_enable ||
rs->point_smooth || (!rs->flatshade && info->uses_interp_color)))
allow_flat_shading = false;
if (sctx->allow_flat_shading != allow_flat_shading) {
sctx->allow_flat_shading = allow_flat_shading;
si_mark_atom_dirty(sctx, &sctx->atoms.s.db_render_state);
}
}
}
static void si_bind_ps_shader(struct pipe_context *ctx, void *state)
{
struct si_context *sctx = (struct si_context *)ctx;
struct si_shader_selector *old_sel = sctx->shader.ps.cso;
struct si_shader_selector *sel = (struct si_shader_selector*)state;
/* skip if supplied shader is one already in use */
if (old_sel == sel)
return;
sctx->shader.ps.cso = sel;
sctx->shader.ps.current = (sel && sel->variants_count) ? sel->variants[0] : NULL;
si_update_common_shader_state(sctx, sel, PIPE_SHADER_FRAGMENT);
if (sel) {
if (sctx->ia_multi_vgt_param_key.u.uses_tess)
si_update_tess_uses_prim_id(sctx);
if (!old_sel || old_sel->info.colors_written != sel->info.colors_written)
si_mark_atom_dirty(sctx, &sctx->atoms.s.cb_render_state);
if (sctx->screen->has_out_of_order_rast &&
(!old_sel || old_sel->info.base.writes_memory != sel->info.base.writes_memory ||
old_sel->info.base.fs.early_fragment_tests !=
sel->info.base.fs.early_fragment_tests))
si_mark_atom_dirty(sctx, &sctx->atoms.s.msaa_config);
}
si_update_ps_colorbuf0_slot(sctx);
si_ps_key_update_framebuffer(sctx);
si_ps_key_update_framebuffer_blend(sctx);
si_ps_key_update_blend_rasterizer(sctx);
si_ps_key_update_rasterizer(sctx);
si_ps_key_update_dsa(sctx);
si_ps_key_update_sample_shading(sctx);
si_ps_key_update_framebuffer_rasterizer_sample_shading(sctx);
si_update_ps_inputs_read_or_disabled(sctx);
si_update_vrs_flat_shading(sctx);
if (sctx->screen->dpbb_allowed) {
bool force_off = sel && sel->info.options & SI_PROFILE_PS_NO_BINNING;
if (force_off != sctx->dpbb_force_off_profile_ps) {
sctx->dpbb_force_off_profile_ps = force_off;
si_mark_atom_dirty(sctx, &sctx->atoms.s.dpbb_state);
}
}
}
static void si_delete_shader(struct si_context *sctx, struct si_shader *shader)
{
if (shader->is_optimized) {
util_queue_drop_job(&sctx->screen->shader_compiler_queue_low_priority, &shader->ready);
}
util_queue_fence_destroy(&shader->ready);
/* If destroyed shaders were not unbound, the next compiled
* shader variant could get the same pointer address and so
* binding it to the same shader stage would be considered
* a no-op, causing random behavior.
*/
int state_index = -1;
switch (shader->selector->stage) {
case MESA_SHADER_VERTEX:
if (shader->key.ge.as_ls) {
if (sctx->gfx_level <= GFX8)
state_index = SI_STATE_IDX(ls);
} else if (shader->key.ge.as_es) {
if (sctx->gfx_level <= GFX8)
state_index = SI_STATE_IDX(es);
} else if (shader->key.ge.as_ngg) {
state_index = SI_STATE_IDX(gs);
} else {
state_index = SI_STATE_IDX(vs);
}
break;
case MESA_SHADER_TESS_CTRL:
state_index = SI_STATE_IDX(hs);
break;
case MESA_SHADER_TESS_EVAL:
if (shader->key.ge.as_es) {
if (sctx->gfx_level <= GFX8)
state_index = SI_STATE_IDX(es);
} else if (shader->key.ge.as_ngg) {
state_index = SI_STATE_IDX(gs);
} else {
state_index = SI_STATE_IDX(vs);
}
break;
case MESA_SHADER_GEOMETRY:
if (shader->is_gs_copy_shader)
state_index = SI_STATE_IDX(vs);
else
state_index = SI_STATE_IDX(gs);
break;
case MESA_SHADER_FRAGMENT:
state_index = SI_STATE_IDX(ps);
break;
default:;
}
if (shader->gs_copy_shader)
si_delete_shader(sctx, shader->gs_copy_shader);
si_shader_selector_reference(sctx, &shader->previous_stage_sel, NULL);
si_shader_destroy(shader);
si_pm4_free_state(sctx, &shader->pm4, state_index);
}
static void si_destroy_shader_selector(struct pipe_context *ctx, void *cso)
{
struct si_context *sctx = (struct si_context *)ctx;
struct si_shader_selector *sel = (struct si_shader_selector *)cso;
enum pipe_shader_type type = pipe_shader_type_from_mesa(sel->stage);
util_queue_drop_job(&sctx->screen->shader_compiler_queue, &sel->ready);
if (sctx->shaders[type].cso == sel) {
sctx->shaders[type].cso = NULL;
sctx->shaders[type].current = NULL;
}
for (unsigned i = 0; i < sel->variants_count; i++) {
si_delete_shader(sctx, sel->variants[i]);
}
if (sel->main_shader_part)
si_delete_shader(sctx, sel->main_shader_part);
if (sel->main_shader_part_ls)
si_delete_shader(sctx, sel->main_shader_part_ls);
if (sel->main_shader_part_es)
si_delete_shader(sctx, sel->main_shader_part_es);
if (sel->main_shader_part_ngg)
si_delete_shader(sctx, sel->main_shader_part_ngg);
free(sel->keys);
free(sel->variants);
util_queue_fence_destroy(&sel->ready);
simple_mtx_destroy(&sel->mutex);
ralloc_free(sel->nir);
free(sel->nir_binary);
free(sel);
}
static void si_delete_shader_selector(struct pipe_context *ctx, void *state)
{
struct si_context *sctx = (struct si_context *)ctx;
struct si_shader_selector *sel = (struct si_shader_selector *)state;
si_shader_selector_reference(sctx, &sel, NULL);
}
/**
* Writing CONFIG or UCONFIG VGT registers requires VGT_FLUSH before that.
*/
static void si_cs_preamble_add_vgt_flush(struct si_context *sctx, bool tmz)
{
struct si_pm4_state *pm4 = tmz ? sctx->cs_preamble_state_tmz : sctx->cs_preamble_state;
bool *has_vgt_flush = tmz ? &sctx->cs_preamble_has_vgt_flush_tmz :
&sctx->cs_preamble_has_vgt_flush;
/* We shouldn't get here if registers are shadowed. */
assert(!sctx->shadowed_regs);
if (*has_vgt_flush)
return;
/* Done by Vulkan before VGT_FLUSH. */
si_pm4_cmd_add(pm4, PKT3(PKT3_EVENT_WRITE, 0, 0));
si_pm4_cmd_add(pm4, EVENT_TYPE(V_028A90_VS_PARTIAL_FLUSH) | EVENT_INDEX(4));
/* VGT_FLUSH is required even if VGT is idle. It resets VGT pointers. */
si_pm4_cmd_add(pm4, PKT3(PKT3_EVENT_WRITE, 0, 0));
si_pm4_cmd_add(pm4, EVENT_TYPE(V_028A90_VGT_FLUSH) | EVENT_INDEX(0));
*has_vgt_flush = true;
}
/**
* Writing CONFIG or UCONFIG VGT registers requires VGT_FLUSH before that.
*/
static void si_emit_vgt_flush(struct radeon_cmdbuf *cs)
{
radeon_begin(cs);
/* This is required before VGT_FLUSH. */
radeon_emit(PKT3(PKT3_EVENT_WRITE, 0, 0));
radeon_emit(EVENT_TYPE(V_028A90_VS_PARTIAL_FLUSH) | EVENT_INDEX(4));
/* VGT_FLUSH is required even if VGT is idle. It resets VGT pointers. */
radeon_emit(PKT3(PKT3_EVENT_WRITE, 0, 0));
radeon_emit(EVENT_TYPE(V_028A90_VGT_FLUSH) | EVENT_INDEX(0));
radeon_end();
}
/* Initialize state related to ESGS / GSVS ring buffers */
bool si_update_gs_ring_buffers(struct si_context *sctx)
{
assert(sctx->gfx_level < GFX11);
struct si_shader_selector *es =
sctx->shader.tes.cso ? sctx->shader.tes.cso : sctx->shader.vs.cso;
struct si_shader_selector *gs = sctx->shader.gs.cso;
/* Chip constants. */
unsigned num_se = sctx->screen->info.max_se;
unsigned wave_size = 64;
unsigned max_gs_waves = 32 * num_se; /* max 32 per SE on GCN */
/* On GFX6-GFX7, the value comes from VGT_GS_VERTEX_REUSE = 16.
* On GFX8+, the value comes from VGT_VERTEX_REUSE_BLOCK_CNTL = 30 (+2).
*/
unsigned gs_vertex_reuse = (sctx->gfx_level >= GFX8 ? 32 : 16) * num_se;
unsigned alignment = 256 * num_se;
/* The maximum size is 63.999 MB per SE. */
unsigned max_size = ((unsigned)(63.999 * 1024 * 1024) & ~255) * num_se;
/* Calculate the minimum size. */
unsigned min_esgs_ring_size = align(es->info.esgs_itemsize * gs_vertex_reuse * wave_size, alignment);
/* These are recommended sizes, not minimum sizes. */
unsigned esgs_ring_size =
max_gs_waves * 2 * wave_size * es->info.esgs_itemsize * gs->info.gs_input_verts_per_prim;
unsigned gsvs_ring_size = max_gs_waves * 2 * wave_size * gs->info.max_gsvs_emit_size;
min_esgs_ring_size = align(min_esgs_ring_size, alignment);
esgs_ring_size = align(esgs_ring_size, alignment);
gsvs_ring_size = align(gsvs_ring_size, alignment);
esgs_ring_size = CLAMP(esgs_ring_size, min_esgs_ring_size, max_size);
gsvs_ring_size = MIN2(gsvs_ring_size, max_size);
/* Some rings don't have to be allocated if shaders don't use them.
* (e.g. no varyings between ES and GS or GS and VS)
*
* GFX9 doesn't have the ESGS ring.
*/
bool update_esgs = sctx->gfx_level <= GFX8 && esgs_ring_size &&
(!sctx->esgs_ring || sctx->esgs_ring->width0 < esgs_ring_size);
bool update_gsvs =
gsvs_ring_size && (!sctx->gsvs_ring || sctx->gsvs_ring->width0 < gsvs_ring_size);
if (!update_esgs && !update_gsvs)
return true;
if (update_esgs) {
pipe_resource_reference(&sctx->esgs_ring, NULL);
sctx->esgs_ring =
pipe_aligned_buffer_create(sctx->b.screen,
PIPE_RESOURCE_FLAG_UNMAPPABLE | SI_RESOURCE_FLAG_DRIVER_INTERNAL |
SI_RESOURCE_FLAG_DISCARDABLE,
PIPE_USAGE_DEFAULT,
esgs_ring_size, sctx->screen->info.pte_fragment_size);
if (!sctx->esgs_ring)
return false;
}
if (update_gsvs) {
pipe_resource_reference(&sctx->gsvs_ring, NULL);
sctx->gsvs_ring =
pipe_aligned_buffer_create(sctx->b.screen,
PIPE_RESOURCE_FLAG_UNMAPPABLE | SI_RESOURCE_FLAG_DRIVER_INTERNAL |
SI_RESOURCE_FLAG_DISCARDABLE,
PIPE_USAGE_DEFAULT,
gsvs_ring_size, sctx->screen->info.pte_fragment_size);
if (!sctx->gsvs_ring)
return false;
}
/* Set ring bindings. */
if (sctx->esgs_ring) {
assert(sctx->gfx_level <= GFX8);
si_set_ring_buffer(sctx, SI_RING_ESGS, sctx->esgs_ring, 0, sctx->esgs_ring->width0, false,
false, 0, 0, 0);
}
if (sctx->gsvs_ring) {
si_set_ring_buffer(sctx, SI_RING_GSVS, sctx->gsvs_ring, 0, sctx->gsvs_ring->width0, false,
false, 0, 0, 0);
}
if (sctx->shadowed_regs) {
/* These registers will be shadowed, so set them only once. */
struct radeon_cmdbuf *cs = &sctx->gfx_cs;
assert(sctx->gfx_level >= GFX7);
si_emit_vgt_flush(cs);
radeon_begin(cs);
/* Set the GS registers. */
if (sctx->esgs_ring) {
assert(sctx->gfx_level <= GFX8);
radeon_set_uconfig_reg(R_030900_VGT_ESGS_RING_SIZE,
sctx->esgs_ring->width0 / 256);
}
if (sctx->gsvs_ring) {
radeon_set_uconfig_reg(R_030904_VGT_GSVS_RING_SIZE,
sctx->gsvs_ring->width0 / 256);
}
radeon_end();
return true;
}
/* The codepath without register shadowing. */
for (unsigned tmz = 0; tmz <= 1; tmz++) {
struct si_pm4_state *pm4 = tmz ? sctx->cs_preamble_state_tmz : sctx->cs_preamble_state;
uint16_t *gs_ring_state_dw_offset = tmz ? &sctx->gs_ring_state_dw_offset_tmz :
&sctx->gs_ring_state_dw_offset;
unsigned old_ndw = 0;
si_cs_preamble_add_vgt_flush(sctx, tmz);
if (!*gs_ring_state_dw_offset) {
/* We are here for the first time. The packets will be added. */
*gs_ring_state_dw_offset = pm4->ndw;
} else {
/* We have been here before. Overwrite the previous packets. */
old_ndw = pm4->ndw;
pm4->ndw = *gs_ring_state_dw_offset;
}
/* Unallocated rings are written to reserve the space in the pm4
* (to be able to overwrite them later). */
if (sctx->gfx_level >= GFX7) {
if (sctx->gfx_level <= GFX8)
si_pm4_set_reg(pm4, R_030900_VGT_ESGS_RING_SIZE,
sctx->esgs_ring ? sctx->esgs_ring->width0 / 256 : 0);
si_pm4_set_reg(pm4, R_030904_VGT_GSVS_RING_SIZE,
sctx->gsvs_ring ? sctx->gsvs_ring->width0 / 256 : 0);
} else {
si_pm4_set_reg(pm4, R_0088C8_VGT_ESGS_RING_SIZE,
sctx->esgs_ring ? sctx->esgs_ring->width0 / 256 : 0);
si_pm4_set_reg(pm4, R_0088CC_VGT_GSVS_RING_SIZE,
sctx->gsvs_ring ? sctx->gsvs_ring->width0 / 256 : 0);
}
if (old_ndw) {
pm4->ndw = old_ndw;
pm4->last_opcode = 255; /* invalid opcode (we don't save the last opcode) */
}
}
/* Flush the context to re-emit both cs_preamble states. */
sctx->last_preamble = NULL; /* flag that the preamble has changed */
sctx->initial_gfx_cs_size = 0; /* force flush */
si_flush_gfx_cs(sctx, RADEON_FLUSH_ASYNC_START_NEXT_GFX_IB_NOW, NULL);
return true;
}
static void si_shader_lock(struct si_shader *shader)
{
simple_mtx_lock(&shader->selector->mutex);
if (shader->previous_stage_sel) {
assert(shader->previous_stage_sel != shader->selector);
simple_mtx_lock(&shader->previous_stage_sel->mutex);
}
}
static void si_shader_unlock(struct si_shader *shader)
{
if (shader->previous_stage_sel)
simple_mtx_unlock(&shader->previous_stage_sel->mutex);
simple_mtx_unlock(&shader->selector->mutex);
}
/**
* @returns 1 if \p sel has been updated to use a new scratch buffer
* 0 if not
* < 0 if there was a failure
*/
static int si_update_scratch_buffer(struct si_context *sctx, struct si_shader *shader)
{
uint64_t scratch_va = sctx->scratch_buffer->gpu_address;
if (!shader)
return 0;
/* This shader doesn't need a scratch buffer */
if (shader->config.scratch_bytes_per_wave == 0)
return 0;
/* Prevent race conditions when updating:
* - si_shader::scratch_bo
* - si_shader::binary::code
* - si_shader::previous_stage::binary::code.
*/
si_shader_lock(shader);
/* This shader is already configured to use the current
* scratch buffer. */
if (shader->scratch_bo == sctx->scratch_buffer) {
si_shader_unlock(shader);
return 0;
}
assert(sctx->scratch_buffer);
/* Replace the shader bo with a new bo that has the relocs applied. */
if (!si_shader_binary_upload(sctx->screen, shader, scratch_va)) {
si_shader_unlock(shader);
return -1;
}
/* Update the shader state to use the new shader bo. */
si_shader_init_pm4_state(sctx->screen, shader);
si_resource_reference(&shader->scratch_bo, sctx->scratch_buffer);
si_shader_unlock(shader);
return 1;
}
static bool si_update_scratch_relocs(struct si_context *sctx)
{
int r;
/* Update the shaders, so that they are using the latest scratch.
* The scratch buffer may have been changed since these shaders were
* last used, so we still need to try to update them, even if they
* require scratch buffers smaller than the current size.
*/
r = si_update_scratch_buffer(sctx, sctx->shader.ps.current);
if (r < 0)
return false;
if (r == 1)
si_pm4_bind_state(sctx, ps, sctx->shader.ps.current);
r = si_update_scratch_buffer(sctx, sctx->shader.gs.current);
if (r < 0)
return false;
if (r == 1)
si_pm4_bind_state(sctx, gs, sctx->shader.gs.current);
r = si_update_scratch_buffer(sctx, sctx->shader.tcs.current);
if (r < 0)
return false;
if (r == 1)
si_pm4_bind_state(sctx, hs, sctx->shader.tcs.current);
/* VS can be bound as LS, ES, or VS. */
r = si_update_scratch_buffer(sctx, sctx->shader.vs.current);
if (r < 0)
return false;
if (r == 1) {
if (sctx->shader.vs.current->key.ge.as_ls)
si_pm4_bind_state(sctx, ls, sctx->shader.vs.current);
else if (sctx->shader.vs.current->key.ge.as_es)
si_pm4_bind_state(sctx, es, sctx->shader.vs.current);
else if (sctx->shader.vs.current->key.ge.as_ngg)
si_pm4_bind_state(sctx, gs, sctx->shader.vs.current);
else
si_pm4_bind_state(sctx, vs, sctx->shader.vs.current);
}
/* TES can be bound as ES or VS. */
r = si_update_scratch_buffer(sctx, sctx->shader.tes.current);
if (r < 0)
return false;
if (r == 1) {
if (sctx->shader.tes.current->key.ge.as_es)
si_pm4_bind_state(sctx, es, sctx->shader.tes.current);
else if (sctx->shader.tes.current->key.ge.as_ngg)
si_pm4_bind_state(sctx, gs, sctx->shader.tes.current);
else
si_pm4_bind_state(sctx, vs, sctx->shader.tes.current);
}
return true;
}
bool si_update_spi_tmpring_size(struct si_context *sctx, unsigned bytes)
{
unsigned spi_tmpring_size;
ac_get_scratch_tmpring_size(&sctx->screen->info, false, bytes,
&sctx->max_seen_scratch_bytes_per_wave, &spi_tmpring_size);
unsigned scratch_needed_size = sctx->max_seen_scratch_bytes_per_wave *
sctx->screen->info.max_scratch_waves;
if (scratch_needed_size > 0) {
if (!sctx->scratch_buffer || scratch_needed_size > sctx->scratch_buffer->b.b.width0) {
/* Create a bigger scratch buffer */
si_resource_reference(&sctx->scratch_buffer, NULL);
sctx->scratch_buffer = si_aligned_buffer_create(
&sctx->screen->b,
PIPE_RESOURCE_FLAG_UNMAPPABLE | SI_RESOURCE_FLAG_DRIVER_INTERNAL |
SI_RESOURCE_FLAG_DISCARDABLE,
PIPE_USAGE_DEFAULT, scratch_needed_size,
sctx->screen->info.pte_fragment_size);
if (!sctx->scratch_buffer)
return false;
si_context_add_resource_size(sctx, &sctx->scratch_buffer->b.b);
}
if (sctx->gfx_level < GFX11 && !si_update_scratch_relocs(sctx))
return false;
}
if (spi_tmpring_size != sctx->spi_tmpring_size) {
sctx->spi_tmpring_size = spi_tmpring_size;
si_mark_atom_dirty(sctx, &sctx->atoms.s.scratch_state);
}
return true;
}
void si_init_tess_factor_ring(struct si_context *sctx)
{
assert(!sctx->tess_rings);
/* The address must be aligned to 2^19, because the shader only
* receives the high 13 bits. Align it to 2MB to match the GPU page size.
*/
sctx->tess_rings = pipe_aligned_buffer_create(sctx->b.screen,
PIPE_RESOURCE_FLAG_UNMAPPABLE |
SI_RESOURCE_FLAG_32BIT |
SI_RESOURCE_FLAG_DRIVER_INTERNAL |
SI_RESOURCE_FLAG_DISCARDABLE,
PIPE_USAGE_DEFAULT,
sctx->screen->hs.tess_offchip_ring_size +
sctx->screen->hs.tess_factor_ring_size,
2 * 1024 * 1024);
if (!sctx->tess_rings)
return;
if (sctx->screen->info.has_tmz_support) {
sctx->tess_rings_tmz = pipe_aligned_buffer_create(sctx->b.screen,
PIPE_RESOURCE_FLAG_UNMAPPABLE |
PIPE_RESOURCE_FLAG_ENCRYPTED |
SI_RESOURCE_FLAG_32BIT |
SI_RESOURCE_FLAG_DRIVER_INTERNAL |
SI_RESOURCE_FLAG_DISCARDABLE,
PIPE_USAGE_DEFAULT,
sctx->screen->hs.tess_offchip_ring_size +
sctx->screen->hs.tess_factor_ring_size,
2 * 1024 * 1024);
}
uint64_t factor_va =
si_resource(sctx->tess_rings)->gpu_address + sctx->screen->hs.tess_offchip_ring_size;
unsigned tf_ring_size_field = sctx->screen->hs.tess_factor_ring_size / 4;
if (sctx->gfx_level >= GFX11)
tf_ring_size_field /= sctx->screen->info.max_se;
assert((tf_ring_size_field & C_030938_SIZE) == 0);
if (sctx->shadowed_regs) {
/* These registers will be shadowed, so set them only once. */
/* TODO: tmz + shadowed_regs support */
struct radeon_cmdbuf *cs = &sctx->gfx_cs;
assert(sctx->gfx_level >= GFX7);
radeon_add_to_buffer_list(sctx, &sctx->gfx_cs, si_resource(sctx->tess_rings),
RADEON_USAGE_READWRITE | RADEON_PRIO_SHADER_RINGS);
si_emit_vgt_flush(cs);
/* Set tessellation registers. */
radeon_begin(cs);
radeon_set_uconfig_reg(R_030938_VGT_TF_RING_SIZE,
S_030938_SIZE(tf_ring_size_field));
radeon_set_uconfig_reg(R_030940_VGT_TF_MEMORY_BASE, factor_va >> 8);
if (sctx->gfx_level >= GFX10) {
radeon_set_uconfig_reg(R_030984_VGT_TF_MEMORY_BASE_HI,
S_030984_BASE_HI(factor_va >> 40));
} else if (sctx->gfx_level == GFX9) {
radeon_set_uconfig_reg(R_030944_VGT_TF_MEMORY_BASE_HI,
S_030944_BASE_HI(factor_va >> 40));
}
radeon_set_uconfig_reg(R_03093C_VGT_HS_OFFCHIP_PARAM,
sctx->screen->hs.hs_offchip_param);
radeon_end();
return;
}
/* The codepath without register shadowing is below. */
/* Add these registers to cs_preamble_state. */
for (unsigned tmz = 0; tmz <= 1; tmz++) {
struct si_pm4_state *pm4 = tmz ? sctx->cs_preamble_state_tmz : sctx->cs_preamble_state;
struct pipe_resource *tf_ring = tmz ? sctx->tess_rings_tmz : sctx->tess_rings;
if (!tf_ring)
continue; /* TMZ not supported */
uint64_t va = si_resource(tf_ring)->gpu_address + sctx->screen->hs.tess_offchip_ring_size;
si_cs_preamble_add_vgt_flush(sctx, tmz);
if (sctx->gfx_level >= GFX7) {
si_pm4_set_reg(pm4, R_030938_VGT_TF_RING_SIZE, S_030938_SIZE(tf_ring_size_field));
si_pm4_set_reg(pm4, R_03093C_VGT_HS_OFFCHIP_PARAM, sctx->screen->hs.hs_offchip_param);
si_pm4_set_reg(pm4, R_030940_VGT_TF_MEMORY_BASE, va >> 8);
if (sctx->gfx_level >= GFX10)
si_pm4_set_reg(pm4, R_030984_VGT_TF_MEMORY_BASE_HI, S_030984_BASE_HI(va >> 40));
else if (sctx->gfx_level == GFX9)
si_pm4_set_reg(pm4, R_030944_VGT_TF_MEMORY_BASE_HI, S_030944_BASE_HI(va >> 40));
} else {
si_pm4_set_reg(pm4, R_008988_VGT_TF_RING_SIZE, S_008988_SIZE(tf_ring_size_field));
si_pm4_set_reg(pm4, R_0089B8_VGT_TF_MEMORY_BASE, factor_va >> 8);
si_pm4_set_reg(pm4, R_0089B0_VGT_HS_OFFCHIP_PARAM, sctx->screen->hs.hs_offchip_param);
}
}
/* Flush the context to re-emit the cs_preamble state.
* This is done only once in a lifetime of a context.
*/
sctx->last_preamble = NULL; /* flag that the preamble has changed */
sctx->initial_gfx_cs_size = 0; /* force flush */
si_flush_gfx_cs(sctx, RADEON_FLUSH_ASYNC_START_NEXT_GFX_IB_NOW, NULL);
}
struct si_pm4_state *si_build_vgt_shader_config(struct si_screen *screen, union si_vgt_stages_key key)
{
struct si_pm4_state *pm4 = CALLOC_STRUCT(si_pm4_state);
uint32_t stages = 0;
if (key.u.tess) {
stages |= S_028B54_LS_EN(V_028B54_LS_STAGE_ON) | S_028B54_HS_EN(1) | S_028B54_DYNAMIC_HS(1);
if (key.u.gs)
stages |= S_028B54_ES_EN(V_028B54_ES_STAGE_DS) | S_028B54_GS_EN(1);
else if (key.u.ngg)
stages |= S_028B54_ES_EN(V_028B54_ES_STAGE_DS);
else
stages |= S_028B54_VS_EN(V_028B54_VS_STAGE_DS);
} else if (key.u.gs) {
stages |= S_028B54_ES_EN(V_028B54_ES_STAGE_REAL) | S_028B54_GS_EN(1);
} else if (key.u.ngg) {
stages |= S_028B54_ES_EN(V_028B54_ES_STAGE_REAL);
}
if (key.u.ngg) {
stages |= S_028B54_PRIMGEN_EN(1) |
S_028B54_NGG_WAVE_ID_EN(key.u.streamout) |
S_028B54_PRIMGEN_PASSTHRU_EN(key.u.ngg_passthrough) |
S_028B54_PRIMGEN_PASSTHRU_NO_MSG(key.u.ngg_passthrough &&
screen->info.family >= CHIP_NAVI23);
} else if (key.u.gs)
stages |= S_028B54_VS_EN(V_028B54_VS_STAGE_COPY_SHADER);
if (screen->info.gfx_level >= GFX9)
stages |= S_028B54_MAX_PRIMGRP_IN_WAVE(2);
if (screen->info.gfx_level >= GFX10) {
stages |= S_028B54_HS_W32_EN(key.u.hs_wave32) |
S_028B54_GS_W32_EN(key.u.gs_wave32) |
S_028B54_VS_W32_EN(key.u.vs_wave32);
/* Legacy GS only supports Wave64. Read it as an implication. */
assert(!(key.u.gs && !key.u.ngg) || !key.u.gs_wave32);
}
si_pm4_set_reg(pm4, R_028B54_VGT_SHADER_STAGES_EN, stages);
return pm4;
}
static void si_emit_scratch_state(struct si_context *sctx)
{
struct radeon_cmdbuf *cs = &sctx->gfx_cs;
radeon_begin(cs);
if (sctx->gfx_level >= GFX11) {
radeon_set_context_reg_seq(R_0286E8_SPI_TMPRING_SIZE, 3);
radeon_emit(sctx->spi_tmpring_size); /* SPI_TMPRING_SIZE */
radeon_emit(sctx->scratch_buffer->gpu_address >> 8); /* SPI_GFX_SCRATCH_BASE_LO */
radeon_emit(sctx->scratch_buffer->gpu_address >> 40); /* SPI_GFX_SCRATCH_BASE_HI */
} else {
radeon_set_context_reg(R_0286E8_SPI_TMPRING_SIZE, sctx->spi_tmpring_size);
}
radeon_end();
if (sctx->scratch_buffer) {
radeon_add_to_buffer_list(sctx, &sctx->gfx_cs, sctx->scratch_buffer,
RADEON_USAGE_READWRITE | RADEON_PRIO_SCRATCH_BUFFER);
}
}
struct si_fixed_func_tcs_shader_key {
uint64_t outputs_written;
uint8_t vertices_out;
};
static uint32_t si_fixed_func_tcs_shader_key_hash(const void *key)
{
return _mesa_hash_data(key, sizeof(struct si_fixed_func_tcs_shader_key));
}
static bool si_fixed_func_tcs_shader_key_equals(const void *a, const void *b)
{
return memcmp(a, b, sizeof(struct si_fixed_func_tcs_shader_key)) == 0;
}
bool si_set_tcs_to_fixed_func_shader(struct si_context *sctx)
{
if (!sctx->fixed_func_tcs_shader_cache) {
sctx->fixed_func_tcs_shader_cache = _mesa_hash_table_create(
NULL, si_fixed_func_tcs_shader_key_hash,
si_fixed_func_tcs_shader_key_equals);
}
struct si_fixed_func_tcs_shader_key key;
key.outputs_written = sctx->shader.vs.cso->info.outputs_written;
key.vertices_out = sctx->patch_vertices;
struct hash_entry *entry = _mesa_hash_table_search(
sctx->fixed_func_tcs_shader_cache, &key);
struct si_shader_selector *tcs;
if (entry)
tcs = (struct si_shader_selector *)entry->data;
else {
tcs = (struct si_shader_selector *)si_create_passthrough_tcs(sctx);
if (!tcs)
return false;
_mesa_hash_table_insert(sctx->fixed_func_tcs_shader_cache, &key, (void *)tcs);
}
sctx->shader.tcs.cso = tcs;
sctx->shader.tcs.key.ge.part.tcs.epilog.invoc0_tess_factors_are_def =
tcs->info.tessfactors_are_def_in_all_invocs;
return true;
}
void si_init_screen_live_shader_cache(struct si_screen *sscreen)
{
util_live_shader_cache_init(&sscreen->live_shader_cache, si_create_shader_selector,
si_destroy_shader_selector);
}
void si_init_shader_functions(struct si_context *sctx)
{
sctx->atoms.s.scratch_state.emit = si_emit_scratch_state;
sctx->b.create_vs_state = si_create_shader;
sctx->b.create_tcs_state = si_create_shader;
sctx->b.create_tes_state = si_create_shader;
sctx->b.create_gs_state = si_create_shader;
sctx->b.create_fs_state = si_create_shader;
sctx->b.bind_vs_state = si_bind_vs_shader;
sctx->b.bind_tcs_state = si_bind_tcs_shader;
sctx->b.bind_tes_state = si_bind_tes_shader;
sctx->b.bind_gs_state = si_bind_gs_shader;
sctx->b.bind_fs_state = si_bind_ps_shader;
sctx->b.delete_vs_state = si_delete_shader_selector;
sctx->b.delete_tcs_state = si_delete_shader_selector;
sctx->b.delete_tes_state = si_delete_shader_selector;
sctx->b.delete_gs_state = si_delete_shader_selector;
sctx->b.delete_fs_state = si_delete_shader_selector;
}
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