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/*
* Copyright © 2014 Intel 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.
*/
/**
* \file brw_tes.c
*
* Tessellation evaluation shader state upload code.
*/
#include "brw_context.h"
#include "brw_nir.h"
#include "brw_program.h"
#include "brw_state.h"
#include "program/prog_parameter.h"
static void
brw_tes_debug_recompile(struct brw_context *brw, struct gl_program *prog,
const struct brw_tes_prog_key *key)
{
perf_debug("Recompiling tessellation evaluation shader for program %d\n",
prog->Id);
bool found = false;
const struct brw_tes_prog_key *old_key =
brw_find_previous_compile(&brw->cache, BRW_CACHE_TES_PROG,
key->program_string_id);
if (!old_key) {
perf_debug(" Didn't find previous compile in the shader cache for "
"debug\n");
return;
}
found |= brw_debug_recompile_sampler_key(brw, &old_key->tex, &key->tex);
found |= key_debug(brw, "inputs read", old_key->inputs_read,
key->inputs_read);
found |= key_debug(brw, "patch inputs read", old_key->patch_inputs_read,
key->patch_inputs_read);
if (!found) {
perf_debug(" Something else\n");
}
}
static bool
brw_codegen_tes_prog(struct brw_context *brw,
struct brw_program *tep,
struct brw_tes_prog_key *key)
{
const struct brw_compiler *compiler = brw->screen->compiler;
const struct gen_device_info *devinfo = &brw->screen->devinfo;
struct brw_stage_state *stage_state = &brw->tes.base;
nir_shader *nir = tep->program.nir;
struct brw_tes_prog_data prog_data;
bool start_busy = false;
double start_time = 0;
memset(&prog_data, 0, sizeof(prog_data));
brw_assign_common_binding_table_offsets(devinfo, &tep->program,
&prog_data.base.base, 0);
/* Allocate the references to the uniforms that will end up in the
* prog_data associated with the compiled program, and which will be freed
* by the state cache.
*
* Note: param_count needs to be num_uniform_components * 4, since we add
* padding around uniform values below vec4 size, so the worst case is that
* every uniform is a float which gets padded to the size of a vec4.
*/
int param_count = nir->num_uniforms / 4;
prog_data.base.base.param =
rzalloc_array(NULL, const gl_constant_value *, param_count);
prog_data.base.base.pull_param =
rzalloc_array(NULL, const gl_constant_value *, param_count);
prog_data.base.base.image_param =
rzalloc_array(NULL, struct brw_image_param,
tep->program.info.num_images);
prog_data.base.base.nr_params = param_count;
prog_data.base.base.nr_image_params = tep->program.info.num_images;
brw_nir_setup_glsl_uniforms(nir, &tep->program, &prog_data.base.base,
compiler->scalar_stage[MESA_SHADER_TESS_EVAL]);
int st_index = -1;
if (unlikely(INTEL_DEBUG & DEBUG_SHADER_TIME))
st_index = brw_get_shader_time_index(brw, &tep->program, ST_TES, true);
if (unlikely(brw->perf_debug)) {
start_busy = brw->batch.last_bo && drm_intel_bo_busy(brw->batch.last_bo);
start_time = get_time();
}
struct brw_vue_map input_vue_map;
brw_compute_tess_vue_map(&input_vue_map, key->inputs_read,
key->patch_inputs_read);
void *mem_ctx = ralloc_context(NULL);
unsigned program_size;
char *error_str;
const unsigned *program =
brw_compile_tes(compiler, brw, mem_ctx, key, &input_vue_map, &prog_data,
nir, &tep->program, st_index, &program_size, &error_str);
if (program == NULL) {
tep->program.sh.data->LinkStatus = linking_failure;
ralloc_strcat(&tep->program.sh.data->InfoLog, error_str);
_mesa_problem(NULL, "Failed to compile tessellation evaluation shader: "
"%s\n", error_str);
ralloc_free(mem_ctx);
return false;
}
if (unlikely(brw->perf_debug)) {
if (tep->compiled_once) {
brw_tes_debug_recompile(brw, &tep->program, key);
}
if (start_busy && !drm_intel_bo_busy(brw->batch.last_bo)) {
perf_debug("TES compile took %.03f ms and stalled the GPU\n",
(get_time() - start_time) * 1000);
}
tep->compiled_once = true;
}
/* Scratch space is used for register spilling */
brw_alloc_stage_scratch(brw, stage_state,
prog_data.base.base.total_scratch,
devinfo->max_tes_threads);
brw_upload_cache(&brw->cache, BRW_CACHE_TES_PROG,
key, sizeof(*key),
program, program_size,
&prog_data, sizeof(prog_data),
&stage_state->prog_offset, &brw->tes.base.prog_data);
ralloc_free(mem_ctx);
return true;
}
void
brw_tes_populate_key(struct brw_context *brw,
struct brw_tes_prog_key *key)
{
struct brw_program *tcp = (struct brw_program *) brw->tess_ctrl_program;
struct brw_program *tep = (struct brw_program *) brw->tess_eval_program;
struct gl_program *prog = &tep->program;
uint64_t per_vertex_slots = prog->info.inputs_read;
uint32_t per_patch_slots = prog->info.patch_inputs_read;
memset(key, 0, sizeof(*key));
key->program_string_id = tep->id;
/* The TCS may have additional outputs which aren't read by the
* TES (possibly for cross-thread communication). These need to
* be stored in the Patch URB Entry as well.
*/
if (tcp) {
struct gl_program *tcp_prog = &tcp->program;
per_vertex_slots |= tcp_prog->info.outputs_written &
~(VARYING_BIT_TESS_LEVEL_INNER | VARYING_BIT_TESS_LEVEL_OUTER);
per_patch_slots |= tcp_prog->info.patch_outputs_written;
}
key->inputs_read = per_vertex_slots;
key->patch_inputs_read = per_patch_slots;
/* _NEW_TEXTURE */
brw_populate_sampler_prog_key_data(&brw->ctx, prog, &key->tex);
}
void
brw_upload_tes_prog(struct brw_context *brw)
{
struct brw_stage_state *stage_state = &brw->tes.base;
struct brw_tes_prog_key key;
/* BRW_NEW_TESS_PROGRAMS */
struct brw_program *tep = (struct brw_program *) brw->tess_eval_program;
if (!brw_state_dirty(brw,
_NEW_TEXTURE,
BRW_NEW_TESS_PROGRAMS))
return;
brw_tes_populate_key(brw, &key);
if (!brw_search_cache(&brw->cache, BRW_CACHE_TES_PROG,
&key, sizeof(key),
&stage_state->prog_offset,
&brw->tes.base.prog_data)) {
bool success = brw_codegen_tes_prog(brw, tep, &key);
assert(success);
(void)success;
}
}
bool
brw_tes_precompile(struct gl_context *ctx,
struct gl_shader_program *shader_prog,
struct gl_program *prog)
{
struct brw_context *brw = brw_context(ctx);
struct brw_tes_prog_key key;
uint32_t old_prog_offset = brw->tes.base.prog_offset;
struct brw_stage_prog_data *old_prog_data = brw->tes.base.prog_data;
bool success;
struct brw_program *btep = brw_program(prog);
memset(&key, 0, sizeof(key));
key.program_string_id = btep->id;
key.inputs_read = prog->nir->info->inputs_read;
key.patch_inputs_read = prog->nir->info->patch_inputs_read;
if (shader_prog->_LinkedShaders[MESA_SHADER_TESS_CTRL]) {
struct gl_program *tcp =
shader_prog->_LinkedShaders[MESA_SHADER_TESS_CTRL]->Program;
key.inputs_read |= tcp->nir->info->outputs_written &
~(VARYING_BIT_TESS_LEVEL_INNER | VARYING_BIT_TESS_LEVEL_OUTER);
key.patch_inputs_read |= tcp->nir->info->patch_outputs_written;
}
brw_setup_tex_for_precompile(brw, &key.tex, prog);
success = brw_codegen_tes_prog(brw, btep, &key);
brw->tes.base.prog_offset = old_prog_offset;
brw->tes.base.prog_data = old_prog_data;
return success;
}
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