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mesa/src/microsoft/clc/clc_compiler.c

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/*
* Copyright © Microsoft Corporation
*
* 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
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* 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 NONINFRINGEMENT.  IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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 "nir.h"
#include "nir_serialize.h"
#include "glsl_types.h"
#include "nir_types.h"
#include "clc_compiler.h"
#include "clc_helpers.h"
#include "clc_nir.h"
#include "../compiler/dxil_nir.h"
#include "../compiler/dxil_nir_lower_int_samplers.h"
#include "../compiler/nir_to_dxil.h"
#include "util/u_debug.h"
#include <util/u_math.h>
#include "spirv/nir_spirv.h"
#include "nir_builder.h"
#include "nir_builtin_builder.h"
#include "git_sha1.h"
struct clc_image_lower_context
{
struct clc_dxil_metadata *metadata;
unsigned *num_srvs;
unsigned *num_uavs;
nir_deref_instr *deref;
unsigned num_buf_ids;
int metadata_index;
};
static int
lower_image_deref_impl(nir_builder *b, struct clc_image_lower_context *context,
const struct glsl_type *new_var_type,
unsigned *num_bindings)
{
nir_variable *in_var = nir_deref_instr_get_variable(context->deref);
nir_variable *uniform = nir_variable_create(b->shader, nir_var_uniform, new_var_type, NULL);
uniform->data.access = in_var->data.access;
uniform->data.binding = in_var->data.binding;
if (context->num_buf_ids > 0) {
// Need to assign a new binding
context->metadata->args[context->metadata_index].
image.buf_ids[context->num_buf_ids] = uniform->data.binding = (*num_bindings)++;
}
context->num_buf_ids++;
return uniform->data.binding;
}
static int
lower_read_only_image_deref(nir_builder *b, struct clc_image_lower_context *context,
nir_alu_type image_type)
{
nir_variable *in_var = nir_deref_instr_get_variable(context->deref);
// Non-writeable images should be converted to samplers,
// since they may have texture operations done on them
const struct glsl_type *new_var_type =
glsl_sampler_type(glsl_get_sampler_dim(in_var->type),
false, glsl_sampler_type_is_array(in_var->type),
nir_get_glsl_base_type_for_nir_type(image_type | 32));
return lower_image_deref_impl(b, context, new_var_type, context->num_srvs);
}
static int
lower_read_write_image_deref(nir_builder *b, struct clc_image_lower_context *context,
nir_alu_type image_type)
{
nir_variable *in_var = nir_deref_instr_get_variable(context->deref);
const struct glsl_type *new_var_type =
glsl_image_type(glsl_get_sampler_dim(in_var->type),
glsl_sampler_type_is_array(in_var->type),
nir_get_glsl_base_type_for_nir_type(image_type | 32));
return lower_image_deref_impl(b, context, new_var_type, context->num_uavs);
}
static void
clc_lower_input_image_deref(nir_builder *b, struct clc_image_lower_context *context)
{
// The input variable here isn't actually an image, it's just the
// image format data.
//
// For every use of an image in a different way, we'll add an
// appropriate uniform to match it. That can result in up to
// 3 uniforms (float4, int4, uint4) for each image. Only one of these
// formats will actually produce correct data, but a single kernel
// could use runtime conditionals to potentially access any of them.
//
// If the image is used in a query that doesn't have a corresponding
// DXIL intrinsic (CL image channel order or channel format), then
// we'll add a kernel input for that data that'll be lowered by the
// explicit IO pass later on.
//
// After all that, we can remove the image input variable and deref.
enum image_uniform_type {
FLOAT4,
INT4,
UINT4,
IMAGE_UNIFORM_TYPE_COUNT
};
int image_bindings[IMAGE_UNIFORM_TYPE_COUNT] = {-1, -1, -1};
nir_ssa_def *format_deref_dest = NULL, *order_deref_dest = NULL;
nir_variable *in_var = nir_deref_instr_get_variable(context->deref);
enum gl_access_qualifier access = in_var->data.access;
context->metadata_index = 0;
while (context->metadata->args[context->metadata_index].image.buf_ids[0] != in_var->data.binding)
context->metadata_index++;
context->num_buf_ids = 0;
/* Do this in 2 passes:
* 1. When encountering a strongly-typed access (load/store), replace the deref
* with one that references an appropriately typed variable. When encountering
* an untyped access (size query), if we have a strongly-typed variable already,
* replace the deref to point to it.
* 2. If there's any references left, they should all be untyped. If we found
* a strongly-typed access later in the 1st pass, then just replace the reference.
* If we didn't, e.g. the resource is only used for a size query, then pick an
* arbitrary type for it.
*/
for (int pass = 0; pass < 2; ++pass) {
nir_foreach_use_safe(src, &context->deref->dest.ssa) {
enum image_uniform_type type;
if (src->parent_instr->type == nir_instr_type_intrinsic) {
nir_intrinsic_instr *intrinsic = nir_instr_as_intrinsic(src->parent_instr);
enum nir_alu_type dest_type;
b->cursor = nir_before_instr(&intrinsic->instr);
switch (intrinsic->intrinsic) {
case nir_intrinsic_image_deref_load:
case nir_intrinsic_image_deref_store: {
dest_type = intrinsic->intrinsic == nir_intrinsic_image_deref_load ?
nir_intrinsic_dest_type(intrinsic) : nir_intrinsic_src_type(intrinsic);
switch (nir_alu_type_get_base_type(dest_type)) {
case nir_type_float: type = FLOAT4; break;
case nir_type_int: type = INT4; break;
case nir_type_uint: type = UINT4; break;
default: unreachable("Unsupported image type for load.");
}
int image_binding = image_bindings[type];
if (image_binding < 0) {
image_binding = image_bindings[type] =
lower_read_write_image_deref(b, context, dest_type);
}
assert((in_var->data.access & ACCESS_NON_WRITEABLE) == 0);
nir_rewrite_image_intrinsic(intrinsic, nir_imm_int(b, image_binding), false);
break;
}
case nir_intrinsic_image_deref_size: {
int image_binding = -1;
for (unsigned i = 0; i < IMAGE_UNIFORM_TYPE_COUNT; ++i) {
if (image_bindings[i] >= 0) {
image_binding = image_bindings[i];
break;
}
}
if (image_binding < 0) {
// Skip for now and come back to it
if (pass == 0)
break;
type = FLOAT4;
image_binding = image_bindings[type] =
lower_read_write_image_deref(b, context, nir_type_float32);
}
assert((in_var->data.access & ACCESS_NON_WRITEABLE) == 0);
nir_rewrite_image_intrinsic(intrinsic, nir_imm_int(b, image_binding), false);
break;
}
case nir_intrinsic_image_deref_format:
case nir_intrinsic_image_deref_order: {
nir_ssa_def **cached_deref = intrinsic->intrinsic == nir_intrinsic_image_deref_format ?
&format_deref_dest : &order_deref_dest;
if (!*cached_deref) {
nir_variable *new_input = nir_variable_create(b->shader, nir_var_uniform, glsl_uint_type(), NULL);
new_input->data.driver_location = in_var->data.driver_location;
if (intrinsic->intrinsic == nir_intrinsic_image_deref_format) {
/* Match cl_image_format { image_channel_order, image_channel_data_type }; */
new_input->data.driver_location += glsl_get_cl_size(new_input->type);
}
b->cursor = nir_after_instr(&context->deref->instr);
*cached_deref = nir_load_var(b, new_input);
}
/* No actual intrinsic needed here, just reference the loaded variable */
nir_ssa_def_rewrite_uses(&intrinsic->dest.ssa, *cached_deref);
nir_instr_remove(&intrinsic->instr);
break;
}
default:
unreachable("Unsupported image intrinsic");
}
} else if (src->parent_instr->type == nir_instr_type_tex) {
assert(in_var->data.access & ACCESS_NON_WRITEABLE);
nir_tex_instr *tex = nir_instr_as_tex(src->parent_instr);
switch (nir_alu_type_get_base_type(tex->dest_type)) {
case nir_type_float: type = FLOAT4; break;
case nir_type_int: type = INT4; break;
case nir_type_uint: type = UINT4; break;
default: unreachable("Unsupported image format for sample.");
}
int image_binding = image_bindings[type];
if (image_binding < 0) {
image_binding = image_bindings[type] =
lower_read_only_image_deref(b, context, tex->dest_type);
}
nir_tex_instr_remove_src(tex, nir_tex_instr_src_index(tex, nir_tex_src_texture_deref));
tex->texture_index = image_binding;
}
}
}
context->metadata->args[context->metadata_index].image.num_buf_ids = context->num_buf_ids;
nir_instr_remove(&context->deref->instr);
exec_node_remove(&in_var->node);
}
static void
clc_lower_images(nir_shader *nir, struct clc_image_lower_context *context)
{
nir_foreach_function(func, nir) {
if (!func->is_entrypoint)
continue;
assert(func->impl);
nir_builder b;
nir_builder_init(&b, func->impl);
nir_foreach_block(block, func->impl) {
nir_foreach_instr_safe(instr, block) {
if (instr->type == nir_instr_type_deref) {
context->deref = nir_instr_as_deref(instr);
if (glsl_type_is_image(context->deref->type)) {
assert(context->deref->deref_type == nir_deref_type_var);
clc_lower_input_image_deref(&b, context);
}
}
}
}
}
}
static void
clc_lower_64bit_semantics(nir_shader *nir)
{
nir_foreach_function(func, nir) {
nir_builder b;
nir_builder_init(&b, func->impl);
nir_foreach_block(block, func->impl) {
nir_foreach_instr_safe(instr, block) {
if (instr->type == nir_instr_type_intrinsic) {
nir_intrinsic_instr *intrinsic = nir_instr_as_intrinsic(instr);
switch (intrinsic->intrinsic) {
case nir_intrinsic_load_global_invocation_id:
case nir_intrinsic_load_global_invocation_id_zero_base:
case nir_intrinsic_load_base_global_invocation_id:
case nir_intrinsic_load_local_invocation_id:
case nir_intrinsic_load_workgroup_id:
case nir_intrinsic_load_workgroup_id_zero_base:
case nir_intrinsic_load_base_workgroup_id:
case nir_intrinsic_load_num_workgroups:
break;
default:
continue;
}
if (nir_instr_ssa_def(instr)->bit_size != 64)
continue;
intrinsic->dest.ssa.bit_size = 32;
b.cursor = nir_after_instr(instr);
nir_ssa_def *i64 = nir_u2u64(&b, &intrinsic->dest.ssa);
nir_ssa_def_rewrite_uses_after(
&intrinsic->dest.ssa,
i64,
i64->parent_instr);
}
}
}
}
}
static void
clc_lower_nonnormalized_samplers(nir_shader *nir,
const dxil_wrap_sampler_state *states)
{
nir_foreach_function(func, nir) {
if (!func->is_entrypoint)
continue;
assert(func->impl);
nir_builder b;
nir_builder_init(&b, func->impl);
nir_foreach_block(block, func->impl) {
nir_foreach_instr_safe(instr, block) {
if (instr->type != nir_instr_type_tex)
continue;
nir_tex_instr *tex = nir_instr_as_tex(instr);
int sampler_src_idx = nir_tex_instr_src_index(tex, nir_tex_src_sampler_deref);
if (sampler_src_idx == -1)
continue;
nir_src *sampler_src = &tex->src[sampler_src_idx].src;
assert(sampler_src->is_ssa && sampler_src->ssa->parent_instr->type == nir_instr_type_deref);
nir_variable *sampler = nir_deref_instr_get_variable(
nir_instr_as_deref(sampler_src->ssa->parent_instr));
// If the sampler returns ints, we'll handle this in the int lowering pass
if (nir_alu_type_get_base_type(tex->dest_type) != nir_type_float)
continue;
// If sampler uses normalized coords, nothing to do
if (!states[sampler->data.binding].is_nonnormalized_coords)
continue;
b.cursor = nir_before_instr(&tex->instr);
int coords_idx = nir_tex_instr_src_index(tex, nir_tex_src_coord);
assert(coords_idx != -1);
nir_ssa_def *coords =
nir_ssa_for_src(&b, tex->src[coords_idx].src, tex->coord_components);
nir_ssa_def *txs = nir_i2f32(&b, nir_get_texture_size(&b, tex));
// Normalize coords for tex
nir_ssa_def *scale = nir_frcp(&b, txs);
nir_ssa_def *comps[4];
for (unsigned i = 0; i < coords->num_components; ++i) {
comps[i] = nir_channel(&b, coords, i);
if (tex->is_array && i == coords->num_components - 1) {
// Don't scale the array index, but do clamp it
comps[i] = nir_fround_even(&b, comps[i]);
comps[i] = nir_fmax(&b, comps[i], nir_imm_float(&b, 0.0f));
comps[i] = nir_fmin(&b, comps[i], nir_fsub(&b, nir_channel(&b, txs, i), nir_imm_float(&b, 1.0f)));
break;
}
// The CTS is pretty clear that this value has to be floored for nearest sampling
// but must not be for linear sampling.
if (!states[sampler->data.binding].is_linear_filtering)
comps[i] = nir_fadd_imm(&b, nir_ffloor(&b, comps[i]), 0.5f);
comps[i] = nir_fmul(&b, comps[i], nir_channel(&b, scale, i));
}
nir_ssa_def *normalized_coords = nir_vec(&b, comps, coords->num_components);
nir_instr_rewrite_src(&tex->instr,
&tex->src[coords_idx].src,
nir_src_for_ssa(normalized_coords));
}
}
}
}
static nir_variable *
add_kernel_inputs_var(struct clc_dxil_object *dxil, nir_shader *nir,
unsigned *cbv_id)
{
if (!dxil->kernel->num_args)
return NULL;
struct clc_dxil_metadata *metadata = &dxil->metadata;
unsigned size = 0;
nir_foreach_variable_with_modes(var, nir, nir_var_uniform)
size = MAX2(size,
var->data.driver_location +
glsl_get_cl_size(var->type));
size = align(size, 4);
const struct glsl_type *array_type = glsl_array_type(glsl_uint_type(), size / 4, 4);
const struct glsl_struct_field field = { array_type, "arr" };
nir_variable *var =
nir_variable_create(nir, nir_var_mem_ubo,
glsl_struct_type(&field, 1, "kernel_inputs", false),
"kernel_inputs");
var->data.binding = (*cbv_id)++;
var->data.how_declared = nir_var_hidden;
return var;
}
static nir_variable *
add_work_properties_var(struct clc_dxil_object *dxil,
struct nir_shader *nir, unsigned *cbv_id)
{
struct clc_dxil_metadata *metadata = &dxil->metadata;
const struct glsl_type *array_type =
glsl_array_type(glsl_uint_type(),
sizeof(struct clc_work_properties_data) / sizeof(unsigned),
sizeof(unsigned));
const struct glsl_struct_field field = { array_type, "arr" };
nir_variable *var =
nir_variable_create(nir, nir_var_mem_ubo,
glsl_struct_type(&field, 1, "kernel_work_properties", false),
"kernel_work_properies");
var->data.binding = (*cbv_id)++;
var->data.how_declared = nir_var_hidden;
return var;
}
static void
clc_lower_constant_to_ssbo(nir_shader *nir,
const struct clc_kernel_info *kerninfo, unsigned *uav_id)
{
/* Update UBO vars and assign them a binding. */
nir_foreach_variable_with_modes(var, nir, nir_var_mem_constant) {
var->data.mode = nir_var_mem_ssbo;
var->data.binding = (*uav_id)++;
}
/* And finally patch all the derefs referincing the constant
* variables/pointers.
*/
nir_foreach_function(func, nir) {
if (!func->is_entrypoint)
continue;
assert(func->impl);
nir_builder b;
nir_builder_init(&b, func->impl);
nir_foreach_block(block, func->impl) {
nir_foreach_instr(instr, block) {
if (instr->type != nir_instr_type_deref)
continue;
nir_deref_instr *deref = nir_instr_as_deref(instr);
if (deref->modes != nir_var_mem_constant)
continue;
deref->modes = nir_var_mem_ssbo;
}
}
}
}
static void
clc_lower_global_to_ssbo(nir_shader *nir)
{
nir_foreach_function(func, nir) {
if (!func->is_entrypoint)
continue;
assert(func->impl);
nir_foreach_block(block, func->impl) {
nir_foreach_instr(instr, block) {
if (instr->type != nir_instr_type_deref)
continue;
nir_deref_instr *deref = nir_instr_as_deref(instr);
if (deref->modes != nir_var_mem_global)
continue;
deref->modes = nir_var_mem_ssbo;
}
}
}
}
static void
copy_const_initializer(const nir_constant *constant, const struct glsl_type *type,
uint8_t *data)
{
unsigned size = glsl_get_cl_size(type);
if (glsl_type_is_array(type)) {
const struct glsl_type *elm_type = glsl_get_array_element(type);
unsigned step_size = glsl_get_explicit_stride(type);
for (unsigned i = 0; i < constant->num_elements; i++) {
copy_const_initializer(constant->elements[i], elm_type,
data + (i * step_size));
}
} else if (glsl_type_is_struct(type)) {
for (unsigned i = 0; i < constant->num_elements; i++) {
const struct glsl_type *elm_type = glsl_get_struct_field(type, i);
int offset = glsl_get_struct_field_offset(type, i);
copy_const_initializer(constant->elements[i], elm_type, data + offset);
}
} else {
assert(glsl_type_is_vector_or_scalar(type));
for (unsigned i = 0; i < glsl_get_components(type); i++) {
switch (glsl_get_bit_size(type)) {
case 64:
*((uint64_t *)data) = constant->values[i].u64;
break;
case 32:
*((uint32_t *)data) = constant->values[i].u32;
break;
case 16:
*((uint16_t *)data) = constant->values[i].u16;
break;
case 8:
*((uint8_t *)data) = constant->values[i].u8;
break;
default:
unreachable("Invalid base type");
}
data += glsl_get_bit_size(type) / 8;
}
}
}
static const struct glsl_type *
get_cast_type(unsigned bit_size)
{
switch (bit_size) {
case 64:
return glsl_int64_t_type();
case 32:
return glsl_int_type();
case 16:
return glsl_int16_t_type();
case 8:
return glsl_int8_t_type();
}
unreachable("Invalid bit_size");
}
static void
split_unaligned_load(nir_builder *b, nir_intrinsic_instr *intrin, unsigned alignment)
{
enum gl_access_qualifier access = nir_intrinsic_access(intrin);
nir_ssa_def *srcs[NIR_MAX_VEC_COMPONENTS * NIR_MAX_VEC_COMPONENTS * sizeof(int64_t) / 8];
unsigned comp_size = intrin->dest.ssa.bit_size / 8;
unsigned num_comps = intrin->dest.ssa.num_components;
b->cursor = nir_before_instr(&intrin->instr);
nir_deref_instr *ptr = nir_src_as_deref(intrin->src[0]);
const struct glsl_type *cast_type = get_cast_type(alignment * 8);
nir_deref_instr *cast = nir_build_deref_cast(b, &ptr->dest.ssa, ptr->modes, cast_type, alignment);
unsigned num_loads = DIV_ROUND_UP(comp_size * num_comps, alignment);
for (unsigned i = 0; i < num_loads; ++i) {
nir_deref_instr *elem = nir_build_deref_ptr_as_array(b, cast, nir_imm_intN_t(b, i, cast->dest.ssa.bit_size));
srcs[i] = nir_load_deref_with_access(b, elem, access);
}
nir_ssa_def *new_dest = nir_extract_bits(b, srcs, num_loads, 0, num_comps, intrin->dest.ssa.bit_size);
nir_ssa_def_rewrite_uses(&intrin->dest.ssa, new_dest);
nir_instr_remove(&intrin->instr);
}
static void
split_unaligned_store(nir_builder *b, nir_intrinsic_instr *intrin, unsigned alignment)
{
enum gl_access_qualifier access = nir_intrinsic_access(intrin);
assert(intrin->src[1].is_ssa);
nir_ssa_def *value = intrin->src[1].ssa;
unsigned comp_size = value->bit_size / 8;
unsigned num_comps = value->num_components;
b->cursor = nir_before_instr(&intrin->instr);
nir_deref_instr *ptr = nir_src_as_deref(intrin->src[0]);
const struct glsl_type *cast_type = get_cast_type(alignment * 8);
nir_deref_instr *cast = nir_build_deref_cast(b, &ptr->dest.ssa, ptr->modes, cast_type, alignment);
unsigned num_stores = DIV_ROUND_UP(comp_size * num_comps, alignment);
for (unsigned i = 0; i < num_stores; ++i) {
nir_ssa_def *substore_val = nir_extract_bits(b, &value, 1, i * alignment * 8, 1, alignment * 8);
nir_deref_instr *elem = nir_build_deref_ptr_as_array(b, cast, nir_imm_intN_t(b, i, cast->dest.ssa.bit_size));
nir_store_deref_with_access(b, elem, substore_val, ~0, access);
}
nir_instr_remove(&intrin->instr);
}
static bool
split_unaligned_loads_stores(nir_shader *shader)
{
bool progress = false;
nir_foreach_function(function, shader) {
if (!function->impl)
continue;
nir_builder b;
nir_builder_init(&b, function->impl);
nir_foreach_block(block, function->impl) {
nir_foreach_instr_safe(instr, block) {
if (instr->type != nir_instr_type_intrinsic)
continue;
nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr);
if (intrin->intrinsic != nir_intrinsic_load_deref &&
intrin->intrinsic != nir_intrinsic_store_deref)
continue;
nir_deref_instr *deref = nir_src_as_deref(intrin->src[0]);
unsigned align_mul = 0, align_offset = 0;
nir_get_explicit_deref_align(deref, true, &align_mul, &align_offset);
unsigned alignment = align_offset ? 1 << (ffs(align_offset) - 1) : align_mul;
/* We can load anything at 4-byte alignment, except for
* UBOs (AKA CBs where the granularity is 16 bytes).
*/
if (alignment >= (deref->modes == nir_var_mem_ubo ? 16 : 4))
continue;
nir_ssa_def *val;
if (intrin->intrinsic == nir_intrinsic_load_deref) {
assert(intrin->dest.is_ssa);
val = &intrin->dest.ssa;
} else {
assert(intrin->src[1].is_ssa);
val = intrin->src[1].ssa;
}
unsigned natural_alignment =
val->bit_size / 8 *
(val->num_components == 3 ? 4 : val->num_components);
if (alignment >= natural_alignment)
continue;
if (intrin->intrinsic == nir_intrinsic_load_deref)
split_unaligned_load(&b, intrin, alignment);
else
split_unaligned_store(&b, intrin, alignment);
progress = true;
}
}
}
return progress;
}
static enum pipe_tex_wrap
wrap_from_cl_addressing(unsigned addressing_mode)
{
switch (addressing_mode)
{
default:
case SAMPLER_ADDRESSING_MODE_NONE:
case SAMPLER_ADDRESSING_MODE_CLAMP:
// Since OpenCL's only border color is 0's and D3D specs out-of-bounds loads to return 0, don't apply any wrap mode
return (enum pipe_tex_wrap)-1;
case SAMPLER_ADDRESSING_MODE_CLAMP_TO_EDGE: return PIPE_TEX_WRAP_CLAMP_TO_EDGE;
case SAMPLER_ADDRESSING_MODE_REPEAT: return PIPE_TEX_WRAP_REPEAT;
case SAMPLER_ADDRESSING_MODE_REPEAT_MIRRORED: return PIPE_TEX_WRAP_MIRROR_REPEAT;
}
}
static bool shader_has_double(nir_shader *nir)
{
bool progress = false;
foreach_list_typed(nir_function, func, node, &nir->functions) {
if (!func->is_entrypoint)
continue;
assert(func->impl);
nir_foreach_block(block, func->impl) {
nir_foreach_instr_safe(instr, block) {
if (instr->type != nir_instr_type_alu)
continue;
nir_alu_instr *alu = nir_instr_as_alu(instr);
const nir_op_info *info = &nir_op_infos[alu->op];
if (info->output_type & nir_type_float &&
nir_dest_bit_size(alu->dest.dest) == 64)
return true;
}
}
}
return false;
}
static bool
scale_fdiv(nir_shader *nir)
{
bool progress = false;
nir_foreach_function(func, nir) {
if (!func->impl)
continue;
nir_builder b;
nir_builder_init(&b, func->impl);
nir_foreach_block(block, func->impl) {
nir_foreach_instr(instr, block) {
if (instr->type != nir_instr_type_alu)
continue;
nir_alu_instr *alu = nir_instr_as_alu(instr);
if (alu->op != nir_op_fdiv || alu->src[0].src.ssa->bit_size != 32)
continue;
b.cursor = nir_before_instr(instr);
nir_ssa_def *fabs = nir_fabs(&b, alu->src[1].src.ssa);
nir_ssa_def *big = nir_flt(&b, nir_imm_int(&b, 0x7e800000), fabs);
nir_ssa_def *small = nir_flt(&b, fabs, nir_imm_int(&b, 0x00800000));
nir_ssa_def *scaled_down_a = nir_fmul_imm(&b, alu->src[0].src.ssa, 0.25);
nir_ssa_def *scaled_down_b = nir_fmul_imm(&b, alu->src[1].src.ssa, 0.25);
nir_ssa_def *scaled_up_a = nir_fmul_imm(&b, alu->src[0].src.ssa, 16777216.0);
nir_ssa_def *scaled_up_b = nir_fmul_imm(&b, alu->src[1].src.ssa, 16777216.0);
nir_ssa_def *final_a =
nir_bcsel(&b, big, scaled_down_a,
(nir_bcsel(&b, small, scaled_up_a, alu->src[0].src.ssa)));
nir_ssa_def *final_b =
nir_bcsel(&b, big, scaled_down_b,
(nir_bcsel(&b, small, scaled_up_b, alu->src[1].src.ssa)));
nir_instr_rewrite_src(instr, &alu->src[0].src, nir_src_for_ssa(final_a));
nir_instr_rewrite_src(instr, &alu->src[1].src, nir_src_for_ssa(final_b));
progress = true;
}
}
}
return progress;
}
struct clc_libclc *
clc_libclc_new_dxil(const struct clc_logger *logger,
const struct clc_libclc_dxil_options *options)
{
struct clc_libclc_options clc_options = {
.optimize = options->optimize,
.nir_options = dxil_get_nir_compiler_options(),
};
return clc_libclc_new(logger, &clc_options);
}
bool
clc_spirv_to_dxil(struct clc_libclc *lib,
const struct clc_binary *linked_spirv,
const struct clc_parsed_spirv *parsed_data,
const char *entrypoint,
const struct clc_runtime_kernel_conf *conf,
const struct clc_spirv_specialization_consts *consts,
const struct clc_logger *logger,
struct clc_dxil_object *out_dxil)
{
struct nir_shader *nir;
for (unsigned i = 0; i < parsed_data->num_kernels; i++) {
if (!strcmp(parsed_data->kernels[i].name, entrypoint)) {
out_dxil->kernel = &parsed_data->kernels[i];
break;
}
}
if (!out_dxil->kernel) {
clc_error(logger, "no '%s' kernel found", entrypoint);
return false;
}
const struct spirv_to_nir_options spirv_options = {
.environment = NIR_SPIRV_OPENCL,
.clc_shader = clc_libclc_get_clc_shader(lib),
.constant_addr_format = nir_address_format_32bit_index_offset_pack64,
.global_addr_format = nir_address_format_32bit_index_offset_pack64,
.shared_addr_format = nir_address_format_32bit_offset_as_64bit,
.temp_addr_format = nir_address_format_32bit_offset_as_64bit,
.float_controls_execution_mode = FLOAT_CONTROLS_DENORM_FLUSH_TO_ZERO_FP32,
.caps = {
.address = true,
.float64 = true,
.int8 = true,
.int16 = true,
.int64 = true,
.kernel = true,
.kernel_image = true,
.kernel_image_read_write = true,
.literal_sampler = true,
.printf = true,
},
};
nir_shader_compiler_options nir_options =
*dxil_get_nir_compiler_options();
if (conf && conf->lower_bit_size & 64) {
nir_options.lower_pack_64_2x32_split = false;
nir_options.lower_unpack_64_2x32_split = false;
nir_options.lower_int64_options = ~0;
}
if (conf && conf->lower_bit_size & 16)
nir_options.support_16bit_alu = true;
glsl_type_singleton_init_or_ref();
nir = spirv_to_nir(linked_spirv->data, linked_spirv->size / 4,
consts ? (struct nir_spirv_specialization *)consts->specializations : NULL,
consts ? consts->num_specializations : 0,
MESA_SHADER_KERNEL, entrypoint,
&spirv_options,
&nir_options);
if (!nir) {
clc_error(logger, "spirv_to_nir() failed");
goto err_free_dxil;
}
nir->info.workgroup_size_variable = true;
NIR_PASS_V(nir, nir_lower_goto_ifs);
NIR_PASS_V(nir, nir_opt_dead_cf);
struct clc_dxil_metadata *metadata = &out_dxil->metadata;
metadata->args = calloc(out_dxil->kernel->num_args,
sizeof(*metadata->args));
if (!metadata->args) {
clc_error(logger, "failed to allocate arg positions");
goto err_free_dxil;
}
{
bool progress;
do
{
progress = false;
NIR_PASS(progress, nir, nir_copy_prop);
NIR_PASS(progress, nir, nir_opt_copy_prop_vars);
NIR_PASS(progress, nir, nir_opt_deref);
NIR_PASS(progress, nir, nir_opt_dce);
NIR_PASS(progress, nir, nir_opt_undef);
NIR_PASS(progress, nir, nir_opt_constant_folding);
NIR_PASS(progress, nir, nir_opt_cse);
NIR_PASS(progress, nir, nir_lower_vars_to_ssa);
NIR_PASS(progress, nir, nir_opt_algebraic);
} while (progress);
}
// Inline all functions first.
// according to the comment on nir_inline_functions
NIR_PASS_V(nir, nir_lower_variable_initializers, nir_var_function_temp);
NIR_PASS_V(nir, nir_lower_returns);
NIR_PASS_V(nir, nir_lower_libclc, clc_libclc_get_clc_shader(lib));
NIR_PASS_V(nir, nir_inline_functions);
// Pick off the single entrypoint that we want.
foreach_list_typed_safe(nir_function, func, node, &nir->functions) {
if (!func->is_entrypoint)
exec_node_remove(&func->node);
}
assert(exec_list_length(&nir->functions) == 1);
{
bool progress;
do
{
progress = false;
NIR_PASS(progress, nir, nir_copy_prop);
NIR_PASS(progress, nir, nir_opt_copy_prop_vars);
NIR_PASS(progress, nir, nir_opt_deref);
NIR_PASS(progress, nir, nir_opt_dce);
NIR_PASS(progress, nir, nir_opt_undef);
NIR_PASS(progress, nir, nir_opt_constant_folding);
NIR_PASS(progress, nir, nir_opt_cse);
NIR_PASS(progress, nir, nir_split_var_copies);
NIR_PASS(progress, nir, nir_lower_var_copies);
NIR_PASS(progress, nir, nir_lower_vars_to_ssa);
NIR_PASS(progress, nir, nir_opt_algebraic);
NIR_PASS(progress, nir, nir_opt_if, true);
NIR_PASS(progress, nir, nir_opt_dead_cf);
NIR_PASS(progress, nir, nir_opt_remove_phis);
NIR_PASS(progress, nir, nir_opt_peephole_select, 8, true, true);
NIR_PASS(progress, nir, nir_lower_vec3_to_vec4, nir_var_mem_generic | nir_var_uniform);
} while (progress);
}
NIR_PASS_V(nir, scale_fdiv);
dxil_wrap_sampler_state int_sampler_states[PIPE_MAX_SHADER_SAMPLER_VIEWS] = { {{0}} };
unsigned sampler_id = 0;
struct exec_list inline_samplers_list;
exec_list_make_empty(&inline_samplers_list);
// Move inline samplers to the end of the uniforms list
nir_foreach_variable_with_modes_safe(var, nir, nir_var_uniform) {
if (glsl_type_is_sampler(var->type) && var->data.sampler.is_inline_sampler) {
exec_node_remove(&var->node);
exec_list_push_tail(&inline_samplers_list, &var->node);
}
}
exec_node_insert_list_after(exec_list_get_tail(&nir->variables), &inline_samplers_list);
NIR_PASS_V(nir, nir_lower_variable_initializers, ~(nir_var_function_temp | nir_var_shader_temp));
// Lower memcpy
NIR_PASS_V(nir, dxil_nir_lower_memcpy_deref);
// Ensure the printf struct has explicit types, but we'll throw away the scratch size, because we haven't
// necessarily removed all temp variables (e.g. the printf struct itself) at this point, so we'll rerun this later
assert(nir->scratch_size == 0);
NIR_PASS_V(nir, nir_lower_vars_to_explicit_types, nir_var_function_temp, glsl_get_cl_type_size_align);
nir_lower_printf_options printf_options = {
.treat_doubles_as_floats = true,
.max_buffer_size = 1024 * 1024
};
NIR_PASS_V(nir, nir_lower_printf, &printf_options);
metadata->printf.info_count = nir->printf_info_count;
metadata->printf.infos = calloc(nir->printf_info_count, sizeof(struct clc_printf_info));
for (unsigned i = 0; i < nir->printf_info_count; i++) {
metadata->printf.infos[i].str = malloc(nir->printf_info[i].string_size);
memcpy(metadata->printf.infos[i].str, nir->printf_info[i].strings, nir->printf_info[i].string_size);
metadata->printf.infos[i].num_args = nir->printf_info[i].num_args;
metadata->printf.infos[i].arg_sizes = malloc(nir->printf_info[i].num_args * sizeof(unsigned));
memcpy(metadata->printf.infos[i].arg_sizes, nir->printf_info[i].arg_sizes, nir->printf_info[i].num_args * sizeof(unsigned));
}
// copy propagate to prepare for lower_explicit_io
NIR_PASS_V(nir, nir_split_var_copies);
NIR_PASS_V(nir, nir_opt_copy_prop_vars);
NIR_PASS_V(nir, nir_lower_var_copies);
NIR_PASS_V(nir, nir_lower_vars_to_ssa);
NIR_PASS_V(nir, nir_lower_alu);
NIR_PASS_V(nir, nir_opt_dce);
NIR_PASS_V(nir, nir_opt_deref);
// For uniforms (kernel inputs), run this before adjusting variable list via image/sampler lowering
NIR_PASS_V(nir, nir_lower_vars_to_explicit_types, nir_var_uniform, glsl_get_cl_type_size_align);
// Calculate input offsets/metadata.
unsigned uav_id = 0;
nir_foreach_variable_with_modes(var, nir, nir_var_uniform) {
int i = var->data.location;
if (i < 0)
continue;
unsigned size = glsl_get_cl_size(var->type);
metadata->args[i].offset = var->data.driver_location;
metadata->args[i].size = size;
metadata->kernel_inputs_buf_size = MAX2(metadata->kernel_inputs_buf_size,
var->data.driver_location + size);
if ((out_dxil->kernel->args[i].address_qualifier == CLC_KERNEL_ARG_ADDRESS_GLOBAL ||
out_dxil->kernel->args[i].address_qualifier == CLC_KERNEL_ARG_ADDRESS_CONSTANT) &&
// Ignore images during this pass - global memory buffers need to have contiguous bindings
!glsl_type_is_image(var->type)) {
metadata->args[i].globconstptr.buf_id = uav_id++;
} else if (glsl_type_is_sampler(var->type)) {
unsigned address_mode = conf ? conf->args[i].sampler.addressing_mode : 0u;
int_sampler_states[sampler_id].wrap[0] =
int_sampler_states[sampler_id].wrap[1] =
int_sampler_states[sampler_id].wrap[2] = wrap_from_cl_addressing(address_mode);
int_sampler_states[sampler_id].is_nonnormalized_coords =
conf ? !conf->args[i].sampler.normalized_coords : 0;
int_sampler_states[sampler_id].is_linear_filtering =
conf ? conf->args[i].sampler.linear_filtering : 0;
metadata->args[i].sampler.sampler_id = var->data.binding = sampler_id++;
}
}
unsigned num_global_inputs = uav_id;
// Second pass over inputs to calculate image bindings
unsigned srv_id = 0;
nir_foreach_variable_with_modes(var, nir, nir_var_uniform) {
int i = var->data.location;
if (i < 0)
continue;
if (glsl_type_is_image(var->type)) {
if (var->data.access == ACCESS_NON_WRITEABLE) {
metadata->args[i].image.buf_ids[0] = srv_id++;
} else {
// Write or read-write are UAVs
metadata->args[i].image.buf_ids[0] = uav_id++;
}
metadata->args[i].image.num_buf_ids = 1;
var->data.binding = metadata->args[i].image.buf_ids[0];
}
}
// Before removing dead uniforms, dedupe constant samplers to make more dead uniforms
NIR_PASS_V(nir, clc_nir_dedupe_const_samplers);
NIR_PASS_V(nir, nir_remove_dead_variables, nir_var_uniform | nir_var_mem_ubo | nir_var_mem_constant | nir_var_function_temp, NULL);
// Fill out inline sampler metadata, now that they've been deduped and dead ones removed
nir_foreach_variable_with_modes(var, nir, nir_var_uniform) {
if (glsl_type_is_sampler(var->type) && var->data.sampler.is_inline_sampler) {
int_sampler_states[sampler_id].wrap[0] =
int_sampler_states[sampler_id].wrap[1] =
int_sampler_states[sampler_id].wrap[2] =
wrap_from_cl_addressing(var->data.sampler.addressing_mode);
int_sampler_states[sampler_id].is_nonnormalized_coords =
!var->data.sampler.normalized_coordinates;
int_sampler_states[sampler_id].is_linear_filtering =
var->data.sampler.filter_mode == SAMPLER_FILTER_MODE_LINEAR;
var->data.binding = sampler_id++;
assert(metadata->num_const_samplers < CLC_MAX_SAMPLERS);
metadata->const_samplers[metadata->num_const_samplers].sampler_id = var->data.binding;
metadata->const_samplers[metadata->num_const_samplers].addressing_mode = var->data.sampler.addressing_mode;
metadata->const_samplers[metadata->num_const_samplers].normalized_coords = var->data.sampler.normalized_coordinates;
metadata->const_samplers[metadata->num_const_samplers].filter_mode = var->data.sampler.filter_mode;
metadata->num_const_samplers++;
}
}
// Needs to come before lower_explicit_io
NIR_PASS_V(nir, nir_lower_readonly_images_to_tex, false);
struct clc_image_lower_context image_lower_context = { metadata, &srv_id, &uav_id };
NIR_PASS_V(nir, clc_lower_images, &image_lower_context);
NIR_PASS_V(nir, clc_lower_nonnormalized_samplers, int_sampler_states);
NIR_PASS_V(nir, nir_lower_samplers);
NIR_PASS_V(nir, dxil_lower_sample_to_txf_for_integer_tex,
int_sampler_states, NULL, 14.0f);
NIR_PASS_V(nir, nir_remove_dead_variables, nir_var_mem_shared | nir_var_function_temp, NULL);
nir->scratch_size = 0;
NIR_PASS_V(nir, nir_lower_vars_to_explicit_types,
nir_var_mem_shared | nir_var_function_temp | nir_var_mem_global | nir_var_mem_constant,
glsl_get_cl_type_size_align);
NIR_PASS_V(nir, dxil_nir_lower_ubo_to_temp);
NIR_PASS_V(nir, clc_lower_constant_to_ssbo, out_dxil->kernel, &uav_id);
NIR_PASS_V(nir, clc_lower_global_to_ssbo);
bool has_printf = false;
NIR_PASS(has_printf, nir, clc_lower_printf_base, uav_id);
metadata->printf.uav_id = has_printf ? uav_id++ : -1;
NIR_PASS_V(nir, dxil_nir_lower_deref_ssbo);
NIR_PASS_V(nir, split_unaligned_loads_stores);
assert(nir->info.cs.ptr_size == 64);
NIR_PASS_V(nir, nir_lower_explicit_io, nir_var_mem_ssbo,
nir_address_format_32bit_index_offset_pack64);
NIR_PASS_V(nir, nir_lower_explicit_io,
nir_var_mem_shared | nir_var_function_temp | nir_var_uniform,
nir_address_format_32bit_offset_as_64bit);
NIR_PASS_V(nir, nir_lower_system_values);
nir_lower_compute_system_values_options compute_options = {
.has_base_global_invocation_id = (conf && conf->support_global_work_id_offsets),
.has_base_workgroup_id = (conf && conf->support_workgroup_id_offsets),
};
NIR_PASS_V(nir, nir_lower_compute_system_values, &compute_options);
NIR_PASS_V(nir, clc_lower_64bit_semantics);
NIR_PASS_V(nir, nir_opt_deref);
NIR_PASS_V(nir, nir_lower_vars_to_ssa);
unsigned cbv_id = 0;
nir_variable *inputs_var =
add_kernel_inputs_var(out_dxil, nir, &cbv_id);
nir_variable *work_properties_var =
add_work_properties_var(out_dxil, nir, &cbv_id);
memcpy(metadata->local_size, nir->info.workgroup_size,
sizeof(metadata->local_size));
memcpy(metadata->local_size_hint, nir->info.cs.workgroup_size_hint,
sizeof(metadata->local_size));
// Patch the localsize before calling clc_nir_lower_system_values().
if (conf) {
for (unsigned i = 0; i < ARRAY_SIZE(nir->info.workgroup_size); i++) {
if (!conf->local_size[i] ||
conf->local_size[i] == nir->info.workgroup_size[i])
continue;
if (nir->info.workgroup_size[i] &&
nir->info.workgroup_size[i] != conf->local_size[i]) {
debug_printf("D3D12: runtime local size does not match reqd_work_group_size() values\n");
goto err_free_dxil;
}
nir->info.workgroup_size[i] = conf->local_size[i];
}
memcpy(metadata->local_size, nir->info.workgroup_size,
sizeof(metadata->local_size));
} else {
/* Make sure there's at least one thread that's set to run */
for (unsigned i = 0; i < ARRAY_SIZE(nir->info.workgroup_size); i++) {
if (nir->info.workgroup_size[i] == 0)
nir->info.workgroup_size[i] = 1;
}
}
NIR_PASS_V(nir, clc_nir_lower_kernel_input_loads, inputs_var);
NIR_PASS_V(nir, split_unaligned_loads_stores);
NIR_PASS_V(nir, nir_lower_explicit_io, nir_var_mem_ubo,
nir_address_format_32bit_index_offset);
NIR_PASS_V(nir, clc_nir_lower_system_values, work_properties_var);
NIR_PASS_V(nir, dxil_nir_lower_loads_stores_to_dxil);
NIR_PASS_V(nir, dxil_nir_opt_alu_deref_srcs);
NIR_PASS_V(nir, dxil_nir_lower_atomics_to_dxil);
NIR_PASS_V(nir, nir_lower_fp16_casts);
NIR_PASS_V(nir, nir_lower_convert_alu_types, NULL);
// Convert pack to pack_split
NIR_PASS_V(nir, nir_lower_pack);
// Lower pack_split to bit math
NIR_PASS_V(nir, nir_opt_algebraic);
NIR_PASS_V(nir, nir_opt_dce);
nir_validate_shader(nir, "Validate before feeding NIR to the DXIL compiler");
struct nir_to_dxil_options opts = {
.interpolate_at_vertex = false,
.lower_int16 = (conf && (conf->lower_bit_size & 16) != 0),
.ubo_binding_offset = 0,
.disable_math_refactoring = true,
.num_kernel_globals = num_global_inputs,
};
for (unsigned i = 0; i < out_dxil->kernel->num_args; i++) {
if (out_dxil->kernel->args[i].address_qualifier != CLC_KERNEL_ARG_ADDRESS_LOCAL)
continue;
/* If we don't have the runtime conf yet, we just create a dummy variable.
* This will be adjusted when clc_spirv_to_dxil() is called with a conf
* argument.
*/
unsigned size = 4;
if (conf && conf->args)
size = conf->args[i].localptr.size;
/* The alignment required for the pointee type is not easy to get from
* here, so let's base our logic on the size itself. Anything bigger than
* the maximum alignment constraint (which is 128 bytes, since ulong16 or
* doubl16 size are the biggest base types) should be aligned on this
* maximum alignment constraint. For smaller types, we use the size
* itself to calculate the alignment.
*/
unsigned alignment = size < 128 ? (1 << (ffs(size) - 1)) : 128;
nir->info.shared_size = align(nir->info.shared_size, alignment);
metadata->args[i].localptr.sharedmem_offset = nir->info.shared_size;
nir->info.shared_size += size;
}
metadata->local_mem_size = nir->info.shared_size;
metadata->priv_mem_size = nir->scratch_size;
/* DXIL double math is too limited compared to what NIR expects. Let's refuse
* to compile a shader when it contains double operations until we have
* double lowering hooked up.
*/
if (shader_has_double(nir)) {
clc_error(logger, "NIR shader contains doubles, which we don't support yet");
goto err_free_dxil;
}
struct blob tmp;
if (!nir_to_dxil(nir, &opts, &tmp)) {
debug_printf("D3D12: nir_to_dxil failed\n");
goto err_free_dxil;
}
nir_foreach_variable_with_modes(var, nir, nir_var_mem_ssbo) {
if (var->constant_initializer) {
if (glsl_type_is_array(var->type)) {
int size = align(glsl_get_cl_size(var->type), 4);
uint8_t *data = malloc(size);
if (!data)
goto err_free_dxil;
copy_const_initializer(var->constant_initializer, var->type, data);
metadata->consts[metadata->num_consts].data = data;
metadata->consts[metadata->num_consts].size = size;
metadata->consts[metadata->num_consts].uav_id = var->data.binding;
metadata->num_consts++;
} else
unreachable("unexpected constant initializer");
}
}
metadata->kernel_inputs_cbv_id = inputs_var ? inputs_var->data.binding : 0;
metadata->work_properties_cbv_id = work_properties_var->data.binding;
metadata->num_uavs = uav_id;
metadata->num_srvs = srv_id;
metadata->num_samplers = sampler_id;
ralloc_free(nir);
glsl_type_singleton_decref();
blob_finish_get_buffer(&tmp, &out_dxil->binary.data,
&out_dxil->binary.size);
return true;
err_free_dxil:
clc_free_dxil_object(out_dxil);
return false;
}
void clc_free_dxil_object(struct clc_dxil_object *dxil)
{
for (unsigned i = 0; i < dxil->metadata.num_consts; i++)
free(dxil->metadata.consts[i].data);
for (unsigned i = 0; i < dxil->metadata.printf.info_count; i++) {
free(dxil->metadata.printf.infos[i].arg_sizes);
free(dxil->metadata.printf.infos[i].str);
}
free(dxil->metadata.printf.infos);
free(dxil->binary.data);
}
uint64_t clc_compiler_get_version()
{
const char sha1[] = MESA_GIT_SHA1;
const char* dash = strchr(sha1, '-');
if (dash) {
return strtoull(dash + 1, NULL, 16);
}
return 0;
}
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