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mesa/src/gallium/drivers/llvmpipe/lp_rast.c

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/**************************************************************************
*
* Copyright 2009 VMware, 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 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 VMWARE AND/OR ITS 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 <limits.h>
#include "util/u_memory.h"
#include "util/u_math.h"
#include "util/u_rect.h"
#include "util/u_surface.h"
#include "util/u_pack_color.h"
#include "util/u_string.h"
#include "util/u_thread.h"
#include "util/u_memset.h"
#include "util/os_time.h"
#include "lp_scene_queue.h"
#include "lp_context.h"
#include "lp_debug.h"
#include "lp_fence.h"
#include "lp_perf.h"
#include "lp_query.h"
#include "lp_rast.h"
#include "lp_rast_priv.h"
#include "gallivm/lp_bld_format.h"
#include "gallivm/lp_bld_debug.h"
#include "lp_scene.h"
#include "lp_tex_sample.h"
#ifdef DEBUG
int jit_line = 0;
const struct lp_rast_state *jit_state = NULL;
const struct lp_rasterizer_task *jit_task = NULL;
#endif
const float lp_sample_pos_4x[4][2] = { { 0.375, 0.125 },
{ 0.875, 0.375 },
{ 0.125, 0.625 },
{ 0.625, 0.875 } };
/**
* Begin rasterizing a scene.
* Called once per scene by one thread.
*/
static void
lp_rast_begin( struct lp_rasterizer *rast,
struct lp_scene *scene )
{
rast->curr_scene = scene;
LP_DBG(DEBUG_RAST, "%s\n", __FUNCTION__);
lp_scene_begin_rasterization( scene );
lp_scene_bin_iter_begin( scene );
}
static void
lp_rast_end( struct lp_rasterizer *rast )
{
rast->curr_scene = NULL;
}
/**
* Beginning rasterization of a tile.
* \param x window X position of the tile, in pixels
* \param y window Y position of the tile, in pixels
*/
static void
lp_rast_tile_begin(struct lp_rasterizer_task *task,
const struct cmd_bin *bin,
int x, int y)
{
unsigned i;
struct lp_scene *scene = task->scene;
LP_DBG(DEBUG_RAST, "%s %d,%d\n", __FUNCTION__, x, y);
task->bin = bin;
task->x = x * TILE_SIZE;
task->y = y * TILE_SIZE;
task->width = TILE_SIZE + x * TILE_SIZE > task->scene->fb.width ?
task->scene->fb.width - x * TILE_SIZE : TILE_SIZE;
task->height = TILE_SIZE + y * TILE_SIZE > task->scene->fb.height ?
task->scene->fb.height - y * TILE_SIZE : TILE_SIZE;
task->thread_data.vis_counter = 0;
task->thread_data.ps_invocations = 0;
for (i = 0; i < task->scene->fb.nr_cbufs; i++) {
if (task->scene->fb.cbufs[i]) {
task->color_tiles[i] = scene->cbufs[i].map +
scene->cbufs[i].stride * task->y +
scene->cbufs[i].format_bytes * task->x;
}
}
if (task->scene->fb.zsbuf) {
task->depth_tile = scene->zsbuf.map +
scene->zsbuf.stride * task->y +
scene->zsbuf.format_bytes * task->x;
}
}
/**
* Clear the rasterizer's current color tile.
* This is a bin command called during bin processing.
* Clear commands always clear all bound layers.
*/
static void
lp_rast_clear_color(struct lp_rasterizer_task *task,
const union lp_rast_cmd_arg arg)
{
const struct lp_scene *scene = task->scene;
unsigned cbuf = arg.clear_rb->cbuf;
union util_color uc;
enum pipe_format format;
/* we never bin clear commands for non-existing buffers */
assert(cbuf < scene->fb.nr_cbufs);
assert(scene->fb.cbufs[cbuf]);
format = scene->fb.cbufs[cbuf]->format;
uc = arg.clear_rb->color_val;
/*
* this is pretty rough since we have target format (bunch of bytes...) here.
* dump it as raw 4 dwords.
*/
LP_DBG(DEBUG_RAST, "%s clear value (target format %d) raw 0x%x,0x%x,0x%x,0x%x\n",
__FUNCTION__, format, uc.ui[0], uc.ui[1], uc.ui[2], uc.ui[3]);
for (unsigned s = 0; s < scene->cbufs[cbuf].nr_samples; s++) {
void *map = (char *)scene->cbufs[cbuf].map + scene->cbufs[cbuf].sample_stride * s;
util_fill_box(map,
format,
scene->cbufs[cbuf].stride,
scene->cbufs[cbuf].layer_stride,
task->x,
task->y,
0,
task->width,
task->height,
scene->fb_max_layer + 1,
&uc);
}
/* this will increase for each rb which probably doesn't mean much */
LP_COUNT(nr_color_tile_clear);
}
/**
* Clear the rasterizer's current z/stencil tile.
* This is a bin command called during bin processing.
* Clear commands always clear all bound layers.
*/
static void
lp_rast_clear_zstencil(struct lp_rasterizer_task *task,
const union lp_rast_cmd_arg arg)
{
const struct lp_scene *scene = task->scene;
uint64_t clear_value64 = arg.clear_zstencil.value;
uint64_t clear_mask64 = arg.clear_zstencil.mask;
uint32_t clear_value = (uint32_t) clear_value64;
uint32_t clear_mask = (uint32_t) clear_mask64;
const unsigned height = task->height;
const unsigned width = task->width;
const unsigned dst_stride = scene->zsbuf.stride;
uint8_t *dst;
unsigned i, j;
unsigned block_size;
LP_DBG(DEBUG_RAST, "%s: value=0x%08x, mask=0x%08x\n",
__FUNCTION__, clear_value, clear_mask);
/*
* Clear the area of the depth/depth buffer matching this tile.
*/
if (scene->fb.zsbuf) {
unsigned layer;
for (unsigned s = 0; s < scene->zsbuf.nr_samples; s++) {
uint8_t *dst_layer = task->depth_tile + (s * scene->zsbuf.sample_stride);
block_size = util_format_get_blocksize(scene->fb.zsbuf->format);
clear_value &= clear_mask;
for (layer = 0; layer <= scene->fb_max_layer; layer++) {
dst = dst_layer;
switch (block_size) {
case 1:
assert(clear_mask == 0xff);
for (i = 0; i < height; i++) {
uint8_t *row = (uint8_t *)dst;
memset(row, (uint8_t) clear_value, width);
dst += dst_stride;
}
break;
case 2:
if (clear_mask == 0xffff) {
for (i = 0; i < height; i++) {
uint16_t *row = (uint16_t *)dst;
for (j = 0; j < width; j++)
*row++ = (uint16_t) clear_value;
dst += dst_stride;
}
}
else {
for (i = 0; i < height; i++) {
uint16_t *row = (uint16_t *)dst;
for (j = 0; j < width; j++) {
uint16_t tmp = ~clear_mask & *row;
*row++ = clear_value | tmp;
}
dst += dst_stride;
}
}
break;
case 4:
if (clear_mask == 0xffffffff) {
for (i = 0; i < height; i++) {
util_memset32(dst, clear_value, width);
dst += dst_stride;
}
}
else {
for (i = 0; i < height; i++) {
uint32_t *row = (uint32_t *)dst;
for (j = 0; j < width; j++) {
uint32_t tmp = ~clear_mask & *row;
*row++ = clear_value | tmp;
}
dst += dst_stride;
}
}
break;
case 8:
clear_value64 &= clear_mask64;
if (clear_mask64 == 0xffffffffffULL) {
for (i = 0; i < height; i++) {
util_memset64(dst, clear_value64, width);
dst += dst_stride;
}
}
else {
for (i = 0; i < height; i++) {
uint64_t *row = (uint64_t *)dst;
for (j = 0; j < width; j++) {
uint64_t tmp = ~clear_mask64 & *row;
*row++ = clear_value64 | tmp;
}
dst += dst_stride;
}
}
break;
default:
assert(0);
break;
}
dst_layer += scene->zsbuf.layer_stride;
}
}
}
}
/**
* Run the shader on all blocks in a tile. This is used when a tile is
* completely contained inside a triangle.
* This is a bin command called during bin processing.
*/
static void
lp_rast_shade_tile(struct lp_rasterizer_task *task,
const union lp_rast_cmd_arg arg)
{
const struct lp_scene *scene = task->scene;
const struct lp_rast_shader_inputs *inputs = arg.shade_tile;
const struct lp_rast_state *state;
struct lp_fragment_shader_variant *variant;
const unsigned tile_x = task->x, tile_y = task->y;
unsigned x, y;
if (inputs->disable) {
/* This command was partially binned and has been disabled */
return;
}
LP_DBG(DEBUG_RAST, "%s\n", __FUNCTION__);
state = task->state;
assert(state);
if (!state) {
return;
}
variant = state->variant;
/* render the whole 64x64 tile in 4x4 chunks */
for (y = 0; y < task->height; y += 4){
for (x = 0; x < task->width; x += 4) {
uint8_t *color[PIPE_MAX_COLOR_BUFS];
unsigned stride[PIPE_MAX_COLOR_BUFS];
unsigned sample_stride[PIPE_MAX_COLOR_BUFS];
uint8_t *depth = NULL;
unsigned depth_stride = 0;
unsigned depth_sample_stride = 0;
unsigned i;
/* color buffer */
for (i = 0; i < scene->fb.nr_cbufs; i++){
if (scene->fb.cbufs[i]) {
stride[i] = scene->cbufs[i].stride;
sample_stride[i] = scene->cbufs[i].sample_stride;
color[i] = lp_rast_get_color_block_pointer(task, i, tile_x + x,
tile_y + y, inputs->layer + inputs->view_index);
}
else {
stride[i] = 0;
sample_stride[i] = 0;
color[i] = NULL;
}
}
/* depth buffer */
if (scene->zsbuf.map) {
depth = lp_rast_get_depth_block_pointer(task, tile_x + x,
tile_y + y, inputs->layer + inputs->view_index);
depth_stride = scene->zsbuf.stride;
depth_sample_stride = scene->zsbuf.sample_stride;
}
uint64_t mask = 0;
for (unsigned i = 0; i < scene->fb_max_samples; i++)
mask |= (uint64_t)(0xffff) << (16 * i);
/* Propagate non-interpolated raster state. */
task->thread_data.raster_state.viewport_index = inputs->viewport_index;
task->thread_data.raster_state.view_index = inputs->view_index;
/* run shader on 4x4 block */
BEGIN_JIT_CALL(state, task);
variant->jit_function[RAST_WHOLE]( &state->jit_context,
tile_x + x, tile_y + y,
inputs->frontfacing,
GET_A0(inputs),
GET_DADX(inputs),
GET_DADY(inputs),
color,
depth,
mask,
&task->thread_data,
stride,
depth_stride,
sample_stride,
depth_sample_stride);
END_JIT_CALL();
}
}
}
/**
* Run the shader on all blocks in a tile. This is used when a tile is
* completely contained inside a triangle, and the shader is opaque.
* This is a bin command called during bin processing.
*/
static void
lp_rast_shade_tile_opaque(struct lp_rasterizer_task *task,
const union lp_rast_cmd_arg arg)
{
LP_DBG(DEBUG_RAST, "%s\n", __FUNCTION__);
assert(task->state);
if (!task->state) {
return;
}
lp_rast_shade_tile(task, arg);
}
/**
* Compute shading for a 4x4 block of pixels inside a triangle.
* This is a bin command called during bin processing.
* \param x X position of quad in window coords
* \param y Y position of quad in window coords
*/
void
lp_rast_shade_quads_mask_sample(struct lp_rasterizer_task *task,
const struct lp_rast_shader_inputs *inputs,
unsigned x, unsigned y,
uint64_t mask)
{
const struct lp_rast_state *state = task->state;
struct lp_fragment_shader_variant *variant = state->variant;
const struct lp_scene *scene = task->scene;
uint8_t *color[PIPE_MAX_COLOR_BUFS];
unsigned stride[PIPE_MAX_COLOR_BUFS];
unsigned sample_stride[PIPE_MAX_COLOR_BUFS];
uint8_t *depth = NULL;
unsigned depth_stride = 0;
unsigned depth_sample_stride = 0;
unsigned i;
assert(state);
/* Sanity checks */
assert(x < scene->tiles_x * TILE_SIZE);
assert(y < scene->tiles_y * TILE_SIZE);
assert(x % TILE_VECTOR_WIDTH == 0);
assert(y % TILE_VECTOR_HEIGHT == 0);
assert((x % 4) == 0);
assert((y % 4) == 0);
/* color buffer */
for (i = 0; i < scene->fb.nr_cbufs; i++) {
if (scene->fb.cbufs[i]) {
stride[i] = scene->cbufs[i].stride;
sample_stride[i] = scene->cbufs[i].sample_stride;
color[i] = lp_rast_get_color_block_pointer(task, i, x, y,
inputs->layer + inputs->view_index);
}
else {
stride[i] = 0;
sample_stride[i] = 0;
color[i] = NULL;
}
}
/* depth buffer */
if (scene->zsbuf.map) {
depth_stride = scene->zsbuf.stride;
depth_sample_stride = scene->zsbuf.sample_stride;
depth = lp_rast_get_depth_block_pointer(task, x, y, inputs->layer + inputs->view_index);
}
assert(lp_check_alignment(state->jit_context.u8_blend_color, 16));
/*
* The rasterizer may produce fragments outside our
* allocated 4x4 blocks hence need to filter them out here.
*/
if ((x % TILE_SIZE) < task->width && (y % TILE_SIZE) < task->height) {
/* Propagate non-interpolated raster state. */
task->thread_data.raster_state.viewport_index = inputs->viewport_index;
task->thread_data.raster_state.view_index = inputs->view_index;
/* run shader on 4x4 block */
BEGIN_JIT_CALL(state, task);
variant->jit_function[RAST_EDGE_TEST](&state->jit_context,
x, y,
inputs->frontfacing,
GET_A0(inputs),
GET_DADX(inputs),
GET_DADY(inputs),
color,
depth,
mask,
&task->thread_data,
stride,
depth_stride,
sample_stride,
depth_sample_stride);
END_JIT_CALL();
}
}
void
lp_rast_shade_quads_mask(struct lp_rasterizer_task *task,
const struct lp_rast_shader_inputs *inputs,
unsigned x, unsigned y,
unsigned mask)
{
uint64_t new_mask = 0;
for (unsigned i = 0; i < task->scene->fb_max_samples; i++)
new_mask |= ((uint64_t)mask) << (16 * i);
lp_rast_shade_quads_mask_sample(task, inputs, x, y, new_mask);
}
/**
* Directly copy pixels from a texture to the destination color buffer.
* This is a bin command called during bin processing.
*/
static void
lp_rast_blit_tile_to_dest(struct lp_rasterizer_task *task,
const union lp_rast_cmd_arg arg)
{
const struct lp_scene *scene = task->scene;
const struct lp_rast_shader_inputs *inputs = arg.shade_tile;
const struct lp_rast_state *state = task->state;
struct lp_fragment_shader_variant *variant = state->variant;
const struct lp_jit_texture *texture = &state->jit_context.textures[0];
const uint8_t *src;
uint8_t *dst;
unsigned src_stride;
unsigned dst_stride;
struct pipe_surface *cbuf = scene->fb.cbufs[0];
const unsigned face_slice = cbuf->u.tex.first_layer;
const unsigned level = cbuf->u.tex.level;
struct llvmpipe_resource *lpt = llvmpipe_resource(cbuf->texture);
int src_x, src_y;
LP_DBG(DEBUG_RAST, "%s\n", __FUNCTION__);
if (inputs->disable) {
/* This command was partially binned and has been disabled */
return;
}
dst = llvmpipe_get_texture_image_address(lpt, face_slice, level);
if (!dst)
return;
dst_stride = lpt->row_stride[level];
src = texture->base;
src_stride = texture->row_stride[0];
src_x = util_iround(GET_A0(inputs)[1][0]*texture->width - 0.5f);
src_y = util_iround(GET_A0(inputs)[1][1]*texture->height - 0.5f);
src_x = src_x + task->x;
src_y = src_y + task->y;
if (0) {
union util_color uc;
uc.ui[0] = 0xff0000ff;
util_fill_rect(dst,
cbuf->format,
dst_stride,
task->x,
task->y,
task->width,
task->height,
&uc);
return;
}
if (src_x >= 0 &&
src_y >= 0 &&
src_x + task->width <= texture->width &&
src_y + task->height <= texture->height) {
if (variant->shader->kind == LP_FS_KIND_BLIT_RGBA ||
(variant->shader->kind == LP_FS_KIND_BLIT_RGB1 &&
cbuf->format == PIPE_FORMAT_B8G8R8X8_UNORM)) {
util_copy_rect(dst,
cbuf->format,
dst_stride,
task->x, task->y,
task->width, task->height,
src, src_stride,
src_x, src_y);
return;
}
if (variant->shader->kind == LP_FS_KIND_BLIT_RGB1) {
if (cbuf->format == PIPE_FORMAT_B8G8R8A8_UNORM) {
int x, y;
dst += task->x * 4;
src += src_x * 4;
dst += task->y * dst_stride;
src += src_y * src_stride;
for (y = 0; y < task->height; ++y) {
const uint32_t *src_row = (const uint32_t *)src;
uint32_t *dst_row = (uint32_t *)dst;
for (x = 0; x < task->width; ++x) {
*dst_row++ = *src_row++ | 0xff000000;
}
dst += dst_stride;
src += src_stride;
}
return;
}
}
}
/*
* Fall back to the jit shaders.
*/
lp_rast_shade_tile_opaque(task, arg);
}
static void
lp_rast_blit_tile(struct lp_rasterizer_task *task,
const union lp_rast_cmd_arg arg)
{
/* This kindof just works, but isn't efficient:
*/
lp_rast_blit_tile_to_dest(task, arg);
}
/**
* Begin a new occlusion query.
* This is a bin command put in all bins.
* Called per thread.
*/
static void
lp_rast_begin_query(struct lp_rasterizer_task *task,
const union lp_rast_cmd_arg arg)
{
struct llvmpipe_query *pq = arg.query_obj;
switch (pq->type) {
case PIPE_QUERY_OCCLUSION_COUNTER:
case PIPE_QUERY_OCCLUSION_PREDICATE:
case PIPE_QUERY_OCCLUSION_PREDICATE_CONSERVATIVE:
pq->start[task->thread_index] = task->thread_data.vis_counter;
break;
case PIPE_QUERY_PIPELINE_STATISTICS:
pq->start[task->thread_index] = task->thread_data.ps_invocations;
break;
case PIPE_QUERY_TIME_ELAPSED:
pq->start[task->thread_index] = os_time_get_nano();
break;
default:
assert(0);
break;
}
}
/**
* End the current occlusion query.
* This is a bin command put in all bins.
* Called per thread.
*/
static void
lp_rast_end_query(struct lp_rasterizer_task *task,
const union lp_rast_cmd_arg arg)
{
struct llvmpipe_query *pq = arg.query_obj;
switch (pq->type) {
case PIPE_QUERY_OCCLUSION_COUNTER:
case PIPE_QUERY_OCCLUSION_PREDICATE:
case PIPE_QUERY_OCCLUSION_PREDICATE_CONSERVATIVE:
pq->end[task->thread_index] +=
task->thread_data.vis_counter - pq->start[task->thread_index];
pq->start[task->thread_index] = 0;
break;
case PIPE_QUERY_TIMESTAMP:
case PIPE_QUERY_TIME_ELAPSED:
pq->end[task->thread_index] = os_time_get_nano();
break;
case PIPE_QUERY_PIPELINE_STATISTICS:
pq->end[task->thread_index] +=
task->thread_data.ps_invocations - pq->start[task->thread_index];
pq->start[task->thread_index] = 0;
break;
default:
assert(0);
break;
}
}
void
lp_rast_set_state(struct lp_rasterizer_task *task,
const union lp_rast_cmd_arg arg)
{
task->state = arg.state;
}
/**
* Called when we're done writing to a color tile.
*/
static void
lp_rast_tile_end(struct lp_rasterizer_task *task)
{
unsigned i;
for (i = 0; i < task->scene->num_active_queries; ++i) {
lp_rast_end_query(task, lp_rast_arg_query(task->scene->active_queries[i]));
}
/* debug */
memset(task->color_tiles, 0, sizeof(task->color_tiles));
task->depth_tile = NULL;
task->bin = NULL;
}
/* Currently have two rendering paths only - the general case triangle
* path and the super-specialized blit/clear path.
*/
#define TRI ((LP_RAST_FLAGS_TRI <<1)-1) /* general case */
#define RECT ((LP_RAST_FLAGS_RECT<<1)-1) /* direct rectangle rasterizer */
#define BLIT ((LP_RAST_FLAGS_BLIT<<1)-1) /* write direct-to-dest */
static const unsigned
rast_flags[] = {
BLIT, /* clear color */
TRI, /* clear zstencil */
TRI, /* triangle_1 */
TRI, /* triangle_2 */
TRI, /* triangle_3 */
TRI, /* triangle_4 */
TRI, /* triangle_5 */
TRI, /* triangle_6 */
TRI, /* triangle_7 */
TRI, /* triangle_8 */
TRI, /* triangle_3_4 */
TRI, /* triangle_3_16 */
TRI, /* triangle_4_16 */
RECT, /* shade_tile */
RECT, /* shade_tile_opaque */
TRI, /* begin_query */
TRI, /* end_query */
BLIT, /* set_state, */
TRI, /* lp_rast_triangle_32_1 */
TRI, /* lp_rast_triangle_32_2 */
TRI, /* lp_rast_triangle_32_3 */
TRI, /* lp_rast_triangle_32_4 */
TRI, /* lp_rast_triangle_32_5 */
TRI, /* lp_rast_triangle_32_6 */
TRI, /* lp_rast_triangle_32_7 */
TRI, /* lp_rast_triangle_32_8 */
TRI, /* lp_rast_triangle_32_3_4 */
TRI, /* lp_rast_triangle_32_3_16 */
TRI, /* lp_rast_triangle_32_4_16 */
TRI, /* lp_rast_triangle_ms_1 */
TRI, /* lp_rast_triangle_ms_2 */
TRI, /* lp_rast_triangle_ms_3 */
TRI, /* lp_rast_triangle_ms_4 */
TRI, /* lp_rast_triangle_ms_5 */
TRI, /* lp_rast_triangle_ms_6 */
TRI, /* lp_rast_triangle_ms_7 */
TRI, /* lp_rast_triangle_ms_8 */
TRI, /* lp_rast_triangle_ms_3_4 */
TRI, /* lp_rast_triangle_ms_3_16 */
TRI, /* lp_rast_triangle_ms_4_16 */
RECT, /* rectangle */
BLIT, /* blit */
};
/*
*/
static const lp_rast_cmd_func
dispatch_blit[] = {
lp_rast_clear_color,
NULL, /* clear_zstencil */
NULL, /* triangle_1 */
NULL, /* triangle_2 */
NULL, /* triangle_3 */
NULL, /* triangle_4 */
NULL, /* triangle_5 */
NULL, /* triangle_6 */
NULL, /* triangle_7 */
NULL, /* triangle_8 */
NULL, /* triangle_3_4 */
NULL, /* triangle_3_16 */
NULL, /* triangle_4_16 */
NULL, /* shade_tile */
NULL, /* shade_tile_opaque */
NULL, /* begin_query */
NULL, /* end_query */
lp_rast_set_state, /* set_state */
NULL, /* lp_rast_triangle_32_1 */
NULL, /* lp_rast_triangle_32_2 */
NULL, /* lp_rast_triangle_32_3 */
NULL, /* lp_rast_triangle_32_4 */
NULL, /* lp_rast_triangle_32_5 */
NULL, /* lp_rast_triangle_32_6 */
NULL, /* lp_rast_triangle_32_7 */
NULL, /* lp_rast_triangle_32_8 */
NULL, /* lp_rast_triangle_32_3_4 */
NULL, /* lp_rast_triangle_32_3_16 */
NULL, /* lp_rast_triangle_32_4_16 */
NULL, /* lp_rast_triangle_ms_1 */
NULL, /* lp_rast_triangle_ms_2 */
NULL, /* lp_rast_triangle_ms_3 */
NULL, /* lp_rast_triangle_ms_4 */
NULL, /* lp_rast_triangle_ms_5 */
NULL, /* lp_rast_triangle_ms_6 */
NULL, /* lp_rast_triangle_ms_7 */
NULL, /* lp_rast_triangle_ms_8 */
NULL, /* lp_rast_triangle_ms_3_4 */
NULL, /* lp_rast_triangle_ms_3_16 */
NULL, /* lp_rast_triangle_ms_4_16 */
NULL, /* rectangle */
lp_rast_blit_tile_to_dest,
};
/* Triangle and general case rasterization: Use the SOA llvm shdaers,
* an active swizzled tile for each color buf, etc. Don't blit/clear
* directly to destination surface as we know there are swizzled
* operations coming.
*/
static const lp_rast_cmd_func
dispatch_tri[] = {
lp_rast_clear_color,
lp_rast_clear_zstencil,
lp_rast_triangle_1,
lp_rast_triangle_2,
lp_rast_triangle_3,
lp_rast_triangle_4,
lp_rast_triangle_5,
lp_rast_triangle_6,
lp_rast_triangle_7,
lp_rast_triangle_8,
lp_rast_triangle_3_4,
lp_rast_triangle_3_16,
lp_rast_triangle_4_16,
lp_rast_shade_tile,
lp_rast_shade_tile_opaque,
lp_rast_begin_query,
lp_rast_end_query,
lp_rast_set_state,
lp_rast_triangle_32_1,
lp_rast_triangle_32_2,
lp_rast_triangle_32_3,
lp_rast_triangle_32_4,
lp_rast_triangle_32_5,
lp_rast_triangle_32_6,
lp_rast_triangle_32_7,
lp_rast_triangle_32_8,
lp_rast_triangle_32_3_4,
lp_rast_triangle_32_3_16,
lp_rast_triangle_32_4_16,
lp_rast_triangle_ms_1,
lp_rast_triangle_ms_2,
lp_rast_triangle_ms_3,
lp_rast_triangle_ms_4,
lp_rast_triangle_ms_5,
lp_rast_triangle_ms_6,
lp_rast_triangle_ms_7,
lp_rast_triangle_ms_8,
lp_rast_triangle_ms_3_4,
lp_rast_triangle_ms_3_16,
lp_rast_triangle_ms_4_16,
lp_rast_rectangle,
lp_rast_blit_tile,
};
/* Debug rasterization with most fastpaths disabled.
*/
static const lp_rast_cmd_func
dispatch_tri_debug[] =
{
lp_rast_clear_color,
lp_rast_clear_zstencil,
lp_rast_triangle_1,
lp_rast_triangle_2,
lp_rast_triangle_3,
lp_rast_triangle_4,
lp_rast_triangle_5,
lp_rast_triangle_6,
lp_rast_triangle_7,
lp_rast_triangle_8,
lp_rast_triangle_3_4,
lp_rast_triangle_3_16,
lp_rast_triangle_4_16,
lp_rast_shade_tile,
lp_rast_shade_tile,
lp_rast_begin_query,
lp_rast_end_query,
lp_rast_set_state,
lp_rast_triangle_32_1,
lp_rast_triangle_32_2,
lp_rast_triangle_32_3,
lp_rast_triangle_32_4,
lp_rast_triangle_32_5,
lp_rast_triangle_32_6,
lp_rast_triangle_32_7,
lp_rast_triangle_32_8,
lp_rast_triangle_32_3_4,
lp_rast_triangle_32_3_16,
lp_rast_triangle_32_4_16,
lp_rast_triangle_ms_1,
lp_rast_triangle_ms_2,
lp_rast_triangle_ms_3,
lp_rast_triangle_ms_4,
lp_rast_triangle_ms_5,
lp_rast_triangle_ms_6,
lp_rast_triangle_ms_7,
lp_rast_triangle_ms_8,
lp_rast_triangle_ms_3_4,
lp_rast_triangle_ms_3_16,
lp_rast_triangle_ms_4_16,
lp_rast_rectangle,
lp_rast_shade_tile,
};
struct lp_bin_info
lp_characterize_bin(const struct cmd_bin *bin)
{
struct cmd_block *block;
struct lp_bin_info info;
unsigned andflags = ~0;
unsigned k, j = 0;
STATIC_ASSERT(ARRAY_SIZE(rast_flags) == LP_RAST_OP_MAX);
for (block = bin->head; block; block = block->next) {
for (k = 0; k < block->count; k++, j++) {
andflags &= rast_flags[block->cmd[k]];
}
}
info.type = andflags;
info.count = j;
return info;
}
static void
blit_rasterize_bin(struct lp_rasterizer_task *task,
const struct cmd_bin *bin)
{
const struct cmd_block *block;
unsigned k;
STATIC_ASSERT(ARRAY_SIZE(dispatch_blit) == LP_RAST_OP_MAX);
if (0) debug_printf("%s\n", __FUNCTION__);
for (block = bin->head; block; block = block->next) {
for (k = 0; k < block->count; k++) {
dispatch_blit[block->cmd[k]]( task, block->arg[k] );
}
}
}
static void
tri_rasterize_bin(struct lp_rasterizer_task *task,
const struct cmd_bin *bin,
int x, int y)
{
const struct cmd_block *block;
unsigned k;
STATIC_ASSERT(ARRAY_SIZE(dispatch_tri) == LP_RAST_OP_MAX);
for (block = bin->head; block; block = block->next) {
for (k = 0; k < block->count; k++) {
dispatch_tri[block->cmd[k]]( task, block->arg[k] );
}
}
}
static void
debug_rasterize_bin(struct lp_rasterizer_task *task,
const struct cmd_bin *bin)
{
const struct cmd_block *block;
unsigned k;
STATIC_ASSERT(ARRAY_SIZE(dispatch_tri_debug) == LP_RAST_OP_MAX);
for (block = bin->head; block; block = block->next) {
for (k = 0; k < block->count; k++) {
dispatch_tri_debug[block->cmd[k]]( task, block->arg[k] );
}
}
}
/**
* Rasterize commands for a single bin.
* \param x, y position of the bin's tile in the framebuffer
* Must be called between lp_rast_begin() and lp_rast_end().
* Called per thread.
*/
static void
rasterize_bin(struct lp_rasterizer_task *task,
const struct cmd_bin *bin, int x, int y )
{
struct lp_bin_info info = lp_characterize_bin(bin);
lp_rast_tile_begin( task, bin, x, y );
if (LP_DEBUG & DEBUG_NO_FASTPATH)
debug_rasterize_bin(task, bin);
else if (info.type & LP_RAST_FLAGS_BLIT)
blit_rasterize_bin(task, bin);
else if (task->scene->permit_linear_rasterizer &&
!(LP_PERF & PERF_NO_RAST_LINEAR) &&
(info.type & LP_RAST_FLAGS_RECT))
lp_linear_rasterize_bin(task, bin);
else
tri_rasterize_bin(task, bin, x, y);
lp_rast_tile_end(task);
#ifdef DEBUG
/* Debug/Perf flags:
*/
if (bin->head->count == 1) {
if (bin->head->cmd[0] == LP_RAST_OP_BLIT)
LP_COUNT(nr_pure_blit_64);
else if (bin->head->cmd[0] == LP_RAST_OP_SHADE_TILE_OPAQUE)
LP_COUNT(nr_pure_shade_opaque_64);
else if (bin->head->cmd[0] == LP_RAST_OP_SHADE_TILE)
LP_COUNT(nr_pure_shade_64);
}
#endif
}
/* An empty bin is one that just loads the contents of the tile and
* stores them again unchanged. This typically happens when bins have
* been flushed for some reason in the middle of a frame, or when
* incremental updates are being made to a render target.
*
* Try to avoid doing pointless work in this case.
*/
static boolean
is_empty_bin( const struct cmd_bin *bin )
{
return bin->head == NULL;
}
/**
* Rasterize/execute all bins within a scene.
* Called per thread.
*/
static void
rasterize_scene(struct lp_rasterizer_task *task,
struct lp_scene *scene)
{
task->scene = scene;
/* Clear the cache tags. This should not always be necessary but
simpler for now. */
#if LP_USE_TEXTURE_CACHE
memset(task->thread_data.cache->cache_tags, 0,
sizeof(task->thread_data.cache->cache_tags));
#if LP_BUILD_FORMAT_CACHE_DEBUG
task->thread_data.cache->cache_access_total = 0;
task->thread_data.cache->cache_access_miss = 0;
#endif
#endif
if (!task->rast->no_rast) {
/* loop over scene bins, rasterize each */
{
struct cmd_bin *bin;
int i, j;
assert(scene);
while ((bin = lp_scene_bin_iter_next(scene, &i, &j))) {
if (!is_empty_bin( bin ))
rasterize_bin(task, bin, i, j);
}
}
}
#if LP_BUILD_FORMAT_CACHE_DEBUG
{
uint64_t total, miss;
total = task->thread_data.cache->cache_access_total;
miss = task->thread_data.cache->cache_access_miss;
if (total) {
debug_printf("thread %d cache access %llu miss %llu hit rate %f\n",
task->thread_index, (long long unsigned)total,
(long long unsigned)miss,
(float)(total - miss)/(float)total);
}
}
#endif
if (scene->fence) {
lp_fence_signal(scene->fence);
}
task->scene = NULL;
}
/**
* Called by setup module when it has something for us to render.
*/
void
lp_rast_queue_scene( struct lp_rasterizer *rast,
struct lp_scene *scene)
{
LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
if (rast->num_threads == 0) {
/* no threading */
unsigned fpstate = util_fpstate_get();
/* Make sure that denorms are treated like zeros. This is
* the behavior required by D3D10. OpenGL doesn't care.
*/
util_fpstate_set_denorms_to_zero(fpstate);
lp_rast_begin( rast, scene );
rasterize_scene( &rast->tasks[0], scene );
lp_rast_end( rast );
util_fpstate_set(fpstate);
rast->curr_scene = NULL;
}
else {
/* threaded rendering! */
unsigned i;
lp_scene_enqueue( rast->full_scenes, scene );
/* signal the threads that there's work to do */
for (i = 0; i < rast->num_threads; i++) {
pipe_semaphore_signal(&rast->tasks[i].work_ready);
}
}
LP_DBG(DEBUG_SETUP, "%s done \n", __FUNCTION__);
}
void
lp_rast_finish( struct lp_rasterizer *rast )
{
if (rast->num_threads == 0) {
/* nothing to do */
}
else {
int i;
/* wait for work to complete */
for (i = 0; i < rast->num_threads; i++) {
pipe_semaphore_wait(&rast->tasks[i].work_done);
}
}
}
/**
* This is the thread's main entrypoint.
* It's a simple loop:
* 1. wait for work
* 2. do work
* 3. signal that we're done
*/
static int
thread_function(void *init_data)
{
struct lp_rasterizer_task *task = (struct lp_rasterizer_task *) init_data;
struct lp_rasterizer *rast = task->rast;
boolean debug = false;
char thread_name[16];
unsigned fpstate;
snprintf(thread_name, sizeof thread_name, "llvmpipe-%u", task->thread_index);
u_thread_setname(thread_name);
/* Make sure that denorms are treated like zeros. This is
* the behavior required by D3D10. OpenGL doesn't care.
*/
fpstate = util_fpstate_get();
util_fpstate_set_denorms_to_zero(fpstate);
while (1) {
/* wait for work */
if (debug)
debug_printf("thread %d waiting for work\n", task->thread_index);
pipe_semaphore_wait(&task->work_ready);
if (rast->exit_flag)
break;
if (task->thread_index == 0) {
/* thread[0]:
* - get next scene to rasterize
* - map the framebuffer surfaces
*/
lp_rast_begin( rast,
lp_scene_dequeue( rast->full_scenes, TRUE ) );
}
/* Wait for all threads to get here so that threads[1+] don't
* get a null rast->curr_scene pointer.
*/
util_barrier_wait( &rast->barrier );
/* do work */
if (debug)
debug_printf("thread %d doing work\n", task->thread_index);
rasterize_scene(task,
rast->curr_scene);
/* wait for all threads to finish with this scene */
util_barrier_wait( &rast->barrier );
/* XXX: shouldn't be necessary:
*/
if (task->thread_index == 0) {
lp_rast_end( rast );
}
/* signal done with work */
if (debug)
debug_printf("thread %d done working\n", task->thread_index);
pipe_semaphore_signal(&task->work_done);
}
#ifdef _WIN32
pipe_semaphore_signal(&task->work_done);
#endif
return 0;
}
/**
* Initialize semaphores and spawn the threads.
*/
static void
create_rast_threads(struct lp_rasterizer *rast)
{
unsigned i;
/* NOTE: if num_threads is zero, we won't use any threads */
for (i = 0; i < rast->num_threads; i++) {
pipe_semaphore_init(&rast->tasks[i].work_ready, 0);
pipe_semaphore_init(&rast->tasks[i].work_done, 0);
rast->threads[i] = u_thread_create(thread_function,
(void *) &rast->tasks[i]);
if (!rast->threads[i]) {
rast->num_threads = i; /* previous thread is max */
break;
}
}
}
/**
* Create new lp_rasterizer. If num_threads is zero, don't create any
* new threads, do rendering synchronously.
* \param num_threads number of rasterizer threads to create
*/
struct lp_rasterizer *
lp_rast_create( unsigned num_threads )
{
struct lp_rasterizer *rast;
unsigned i;
rast = CALLOC_STRUCT(lp_rasterizer);
if (!rast) {
goto no_rast;
}
rast->full_scenes = lp_scene_queue_create();
if (!rast->full_scenes) {
goto no_full_scenes;
}
for (i = 0; i < MAX2(1, num_threads); i++) {
struct lp_rasterizer_task *task = &rast->tasks[i];
task->rast = rast;
task->thread_index = i;
task->thread_data.cache = align_malloc(sizeof(struct lp_build_format_cache),
16);
if (!task->thread_data.cache) {
goto no_thread_data_cache;
}
}
rast->num_threads = num_threads;
rast->no_rast = debug_get_bool_option("LP_NO_RAST", FALSE);
create_rast_threads(rast);
/* for synchronizing rasterization threads */
if (rast->num_threads > 0) {
util_barrier_init( &rast->barrier, rast->num_threads );
}
memset(lp_dummy_tile, 0, sizeof lp_dummy_tile);
return rast;
no_thread_data_cache:
for (i = 0; i < MAX2(1, rast->num_threads); i++) {
if (rast->tasks[i].thread_data.cache) {
align_free(rast->tasks[i].thread_data.cache);
}
}
lp_scene_queue_destroy(rast->full_scenes);
no_full_scenes:
FREE(rast);
no_rast:
return NULL;
}
/* Shutdown:
*/
void lp_rast_destroy( struct lp_rasterizer *rast )
{
unsigned i;
/* Set exit_flag and signal each thread's work_ready semaphore.
* Each thread will be woken up, notice that the exit_flag is set and
* break out of its main loop. The thread will then exit.
*/
rast->exit_flag = TRUE;
for (i = 0; i < rast->num_threads; i++) {
pipe_semaphore_signal(&rast->tasks[i].work_ready);
}
/* Wait for threads to terminate before cleaning up per-thread data.
* We don't actually call pipe_thread_wait to avoid dead lock on Windows
* per https://bugs.freedesktop.org/show_bug.cgi?id=76252 */
for (i = 0; i < rast->num_threads; i++) {
#ifdef _WIN32
/* Threads might already be dead - Windows apparently terminates other threads when
* returning from main.
*/
DWORD exit_code = STILL_ACTIVE;
if (GetExitCodeThread(rast->threads[i], &exit_code) && exit_code == STILL_ACTIVE)
pipe_semaphore_wait(&rast->tasks[i].work_done);
#else
thrd_join(rast->threads[i], NULL);
#endif
}
/* Clean up per-thread data */
for (i = 0; i < rast->num_threads; i++) {
pipe_semaphore_destroy(&rast->tasks[i].work_ready);
pipe_semaphore_destroy(&rast->tasks[i].work_done);
}
for (i = 0; i < MAX2(1, rast->num_threads); i++) {
align_free(rast->tasks[i].thread_data.cache);
}
/* for synchronizing rasterization threads */
if (rast->num_threads > 0) {
util_barrier_destroy( &rast->barrier );
}
lp_scene_queue_destroy(rast->full_scenes);
FREE(rast);
}
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