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/*
* Copyright © 2013 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_vec4_gs.c
*
* State atom for client-programmable geometry shaders, and support code.
*/
#include "brw_gs.h"
#include "brw_context.h"
#include "brw_vec4_gs_visitor.h"
#include "brw_state.h"
#include "brw_ff_gs.h"
#include "brw_nir.h"
#include "brw_program.h"
static void
assign_gs_binding_table_offsets(const struct brw_device_info *devinfo,
const struct gl_shader_program *shader_prog,
const struct gl_program *prog,
struct brw_gs_prog_data *prog_data)
{
/* In gen6 we reserve the first BRW_MAX_SOL_BINDINGS entries for transform
* feedback surfaces.
*/
uint32_t reserved = devinfo->gen == 6 ? BRW_MAX_SOL_BINDINGS : 0;
brw_assign_common_binding_table_offsets(MESA_SHADER_GEOMETRY, devinfo,
shader_prog, prog,
&prog_data->base.base,
reserved);
}
bool
brw_codegen_gs_prog(struct brw_context *brw,
struct gl_shader_program *prog,
struct brw_geometry_program *gp,
struct brw_gs_prog_key *key)
{
struct brw_compiler *compiler = brw->intelScreen->compiler;
struct gl_shader *shader = prog->_LinkedShaders[MESA_SHADER_GEOMETRY];
struct brw_stage_state *stage_state = &brw->gs.base;
struct brw_gs_prog_data prog_data;
memset(&prog_data, 0, sizeof(prog_data));
assign_gs_binding_table_offsets(brw->intelScreen->devinfo, prog,
&gp->program.Base, &prog_data);
/* 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.
*/
struct gl_shader *gs = prog->_LinkedShaders[MESA_SHADER_GEOMETRY];
int param_count = gp->program.Base.nir->num_uniforms;
if (!compiler->scalar_stage[MESA_SHADER_GEOMETRY])
param_count *= 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, gs->NumImages);
prog_data.base.base.nr_params = param_count;
prog_data.base.base.nr_image_params = gs->NumImages;
brw_nir_setup_glsl_uniforms(gp->program.Base.nir, prog, &gp->program.Base,
&prog_data.base.base,
compiler->scalar_stage[MESA_SHADER_GEOMETRY]);
GLbitfield64 outputs_written = gp->program.Base.OutputsWritten;
brw_compute_vue_map(brw->intelScreen->devinfo,
&prog_data.base.vue_map, outputs_written,
prog ? prog->SeparateShader : false);
if (unlikely(INTEL_DEBUG & DEBUG_GS))
brw_dump_ir("geometry", prog, gs, NULL);
int st_index = -1;
if (INTEL_DEBUG & DEBUG_SHADER_TIME)
st_index = brw_get_shader_time_index(brw, prog, NULL, ST_GS);
void *mem_ctx = ralloc_context(NULL);
unsigned program_size;
char *error_str;
const unsigned *program =
brw_compile_gs(brw->intelScreen->compiler, brw, mem_ctx, key,
&prog_data, shader->Program->nir, prog,
st_index, &program_size, &error_str);
if (program == NULL) {
ralloc_free(mem_ctx);
return false;
}
/* Scratch space is used for register spilling */
if (prog_data.base.base.total_scratch) {
brw_get_scratch_bo(brw, &stage_state->scratch_bo,
prog_data.base.base.total_scratch *
brw->max_gs_threads);
}
brw_upload_cache(&brw->cache, BRW_CACHE_GS_PROG,
key, sizeof(*key),
program, program_size,
&prog_data, sizeof(prog_data),
&stage_state->prog_offset, &brw->gs.prog_data);
ralloc_free(mem_ctx);
return true;
}
static bool
brw_gs_state_dirty(struct brw_context *brw)
{
return brw_state_dirty(brw,
_NEW_TEXTURE,
BRW_NEW_GEOMETRY_PROGRAM |
BRW_NEW_TRANSFORM_FEEDBACK);
}
static void
brw_gs_populate_key(struct brw_context *brw,
struct brw_gs_prog_key *key)
{
struct gl_context *ctx = &brw->ctx;
struct brw_stage_state *stage_state = &brw->gs.base;
struct brw_geometry_program *gp =
(struct brw_geometry_program *) brw->geometry_program;
struct gl_program *prog = &gp->program.Base;
memset(key, 0, sizeof(*key));
key->program_string_id = gp->id;
/* _NEW_TEXTURE */
brw_populate_sampler_prog_key_data(ctx, prog, stage_state->sampler_count,
&key->tex);
}
void
brw_upload_gs_prog(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
struct gl_shader_program **current = ctx->_Shader->CurrentProgram;
struct brw_stage_state *stage_state = &brw->gs.base;
struct brw_gs_prog_key key;
/* BRW_NEW_GEOMETRY_PROGRAM */
struct brw_geometry_program *gp =
(struct brw_geometry_program *) brw->geometry_program;
if (!brw_gs_state_dirty(brw))
return;
if (gp == NULL) {
/* No geometry shader. Vertex data just passes straight through. */
if (brw->gen == 6 &&
(brw->ctx.NewDriverState & BRW_NEW_TRANSFORM_FEEDBACK)) {
gen6_brw_upload_ff_gs_prog(brw);
return;
}
/* Other state atoms had better not try to access prog_data, since
* there's no GS program.
*/
brw->gs.prog_data = NULL;
brw->gs.base.prog_data = NULL;
return;
}
brw_gs_populate_key(brw, &key);
if (!brw_search_cache(&brw->cache, BRW_CACHE_GS_PROG,
&key, sizeof(key),
&stage_state->prog_offset, &brw->gs.prog_data)) {
bool success = brw_codegen_gs_prog(brw, current[MESA_SHADER_GEOMETRY],
gp, &key);
assert(success);
(void)success;
}
brw->gs.base.prog_data = &brw->gs.prog_data->base.base;
}
bool
brw_gs_precompile(struct gl_context *ctx,
struct gl_shader_program *shader_prog,
struct gl_program *prog)
{
struct brw_context *brw = brw_context(ctx);
struct brw_gs_prog_key key;
uint32_t old_prog_offset = brw->gs.base.prog_offset;
struct brw_gs_prog_data *old_prog_data = brw->gs.prog_data;
bool success;
struct gl_geometry_program *gp = (struct gl_geometry_program *) prog;
struct brw_geometry_program *bgp = brw_geometry_program(gp);
memset(&key, 0, sizeof(key));
brw_setup_tex_for_precompile(brw, &key.tex, prog);
key.program_string_id = bgp->id;
success = brw_codegen_gs_prog(brw, shader_prog, bgp, &key);
brw->gs.base.prog_offset = old_prog_offset;
brw->gs.prog_data = old_prog_data;
return success;
}
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