diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_link.cpp')
-rw-r--r-- | src/mesa/drivers/dri/i965/brw_link.cpp | 401 |
1 files changed, 0 insertions, 401 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_link.cpp b/src/mesa/drivers/dri/i965/brw_link.cpp deleted file mode 100644 index 396ee4d3c0d..00000000000 --- a/src/mesa/drivers/dri/i965/brw_link.cpp +++ /dev/null @@ -1,401 +0,0 @@ -/* - * Copyright © 2015 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. - */ - -#include "brw_context.h" -#include "compiler/brw_nir.h" -#include "brw_program.h" -#include "compiler/glsl/gl_nir.h" -#include "compiler/glsl/gl_nir_linker.h" -#include "compiler/glsl/ir.h" -#include "compiler/glsl/ir_optimization.h" -#include "compiler/glsl/program.h" -#include "compiler/nir/nir_serialize.h" -#include "program/program.h" -#include "main/glspirv.h" -#include "main/mtypes.h" -#include "main/shaderapi.h" -#include "main/shaderobj.h" -#include "main/uniforms.h" - -/** - * Performs a compile of the shader stages even when we don't know - * what non-orthogonal state will be set, in the hope that it reflects - * the eventual NOS used, and thus allows us to produce link failures. - */ -static bool -brw_shader_precompile(struct gl_context *ctx, - struct gl_shader_program *sh_prog) -{ - struct gl_linked_shader *vs = sh_prog->_LinkedShaders[MESA_SHADER_VERTEX]; - struct gl_linked_shader *tcs = sh_prog->_LinkedShaders[MESA_SHADER_TESS_CTRL]; - struct gl_linked_shader *tes = sh_prog->_LinkedShaders[MESA_SHADER_TESS_EVAL]; - struct gl_linked_shader *gs = sh_prog->_LinkedShaders[MESA_SHADER_GEOMETRY]; - struct gl_linked_shader *fs = sh_prog->_LinkedShaders[MESA_SHADER_FRAGMENT]; - struct gl_linked_shader *cs = sh_prog->_LinkedShaders[MESA_SHADER_COMPUTE]; - - if (fs && !brw_fs_precompile(ctx, fs->Program)) - return false; - - if (gs && !brw_gs_precompile(ctx, gs->Program)) - return false; - - if (tes && !brw_tes_precompile(ctx, sh_prog, tes->Program)) - return false; - - if (tcs && !brw_tcs_precompile(ctx, sh_prog, tcs->Program)) - return false; - - if (vs && !brw_vs_precompile(ctx, vs->Program)) - return false; - - if (cs && !brw_cs_precompile(ctx, cs->Program)) - return false; - - return true; -} - -static void -brw_lower_packing_builtins(struct brw_context *brw, - exec_list *ir) -{ - const struct intel_device_info *devinfo = &brw->screen->devinfo; - - /* Gens < 7 don't have instructions to convert to or from half-precision, - * and Gens < 6 don't expose that functionality. - */ - if (devinfo->ver != 6) - return; - - lower_packing_builtins(ir, LOWER_PACK_HALF_2x16 | LOWER_UNPACK_HALF_2x16); -} - -static void -process_glsl_ir(struct brw_context *brw, - struct gl_shader_program *shader_prog, - struct gl_linked_shader *shader) -{ - const struct intel_device_info *devinfo = &brw->screen->devinfo; - struct gl_context *ctx = &brw->ctx; - - /* Temporary memory context for any new IR. */ - void *mem_ctx = ralloc_context(NULL); - - ralloc_adopt(mem_ctx, shader->ir); - - if (shader->Stage == MESA_SHADER_FRAGMENT) { - lower_blend_equation_advanced( - shader, ctx->Extensions.KHR_blend_equation_advanced_coherent); - } - - /* lower_packing_builtins() inserts arithmetic instructions, so it - * must precede lower_instructions(). - */ - brw_lower_packing_builtins(brw, shader->ir); - do_mat_op_to_vec(shader->ir); - - unsigned instructions_to_lower = (DIV_TO_MUL_RCP | - SUB_TO_ADD_NEG | - EXP_TO_EXP2 | - LOG_TO_LOG2 | - DFREXP_DLDEXP_TO_ARITH); - if (devinfo->ver < 7) { - instructions_to_lower |= BIT_COUNT_TO_MATH | - EXTRACT_TO_SHIFTS | - INSERT_TO_SHIFTS | - REVERSE_TO_SHIFTS; - } - - lower_instructions(shader->ir, instructions_to_lower); - - /* Pre-gfx6 HW can only nest if-statements 16 deep. Beyond this, - * if-statements need to be flattened. - */ - if (devinfo->ver < 6) - lower_if_to_cond_assign(shader->Stage, shader->ir, 16); - - do_vec_index_to_cond_assign(shader->ir); - lower_vector_insert(shader->ir, true); - lower_offset_arrays(shader->ir); - lower_quadop_vector(shader->ir, false); - - validate_ir_tree(shader->ir); - - /* Now that we've finished altering the linked IR, reparent any live IR back - * to the permanent memory context, and free the temporary one (discarding any - * junk we optimized away). - */ - reparent_ir(shader->ir, shader->ir); - ralloc_free(mem_ctx); - - if (ctx->_Shader->Flags & GLSL_DUMP) { - fprintf(stderr, "\n"); - if (shader->ir) { - fprintf(stderr, "GLSL IR for linked %s program %d:\n", - _mesa_shader_stage_to_string(shader->Stage), - shader_prog->Name); - _mesa_print_ir(stderr, shader->ir, NULL); - } else { - fprintf(stderr, "No GLSL IR for linked %s program %d (shader may be " - "from cache)\n", _mesa_shader_stage_to_string(shader->Stage), - shader_prog->Name); - } - fprintf(stderr, "\n"); - } -} - -static void -unify_interfaces(struct shader_info **infos) -{ - struct shader_info *prev_info = NULL; - - for (unsigned i = MESA_SHADER_VERTEX; i < MESA_SHADER_FRAGMENT; i++) { - if (!infos[i]) - continue; - - if (prev_info) { - prev_info->outputs_written |= infos[i]->inputs_read & - ~(VARYING_BIT_TESS_LEVEL_INNER | VARYING_BIT_TESS_LEVEL_OUTER); - infos[i]->inputs_read |= prev_info->outputs_written & - ~(VARYING_BIT_TESS_LEVEL_INNER | VARYING_BIT_TESS_LEVEL_OUTER); - - prev_info->patch_outputs_written |= infos[i]->patch_inputs_read; - infos[i]->patch_inputs_read |= prev_info->patch_outputs_written; - } - prev_info = infos[i]; - } -} - -static void -update_xfb_info(struct gl_transform_feedback_info *xfb_info, - struct shader_info *info) -{ - if (!xfb_info) - return; - - for (unsigned i = 0; i < xfb_info->NumOutputs; i++) { - struct gl_transform_feedback_output *output = &xfb_info->Outputs[i]; - - /* The VUE header contains three scalar fields packed together: - * - gl_PointSize is stored in VARYING_SLOT_PSIZ.w - * - gl_Layer is stored in VARYING_SLOT_PSIZ.y - * - gl_ViewportIndex is stored in VARYING_SLOT_PSIZ.z - */ - switch (output->OutputRegister) { - case VARYING_SLOT_LAYER: - assert(output->NumComponents == 1); - output->OutputRegister = VARYING_SLOT_PSIZ; - output->ComponentOffset = 1; - break; - case VARYING_SLOT_VIEWPORT: - assert(output->NumComponents == 1); - output->OutputRegister = VARYING_SLOT_PSIZ; - output->ComponentOffset = 2; - break; - case VARYING_SLOT_PSIZ: - assert(output->NumComponents == 1); - output->ComponentOffset = 3; - break; - } - - info->outputs_written |= 1ull << output->OutputRegister; - } -} - -extern "C" GLboolean -brw_link_shader(struct gl_context *ctx, struct gl_shader_program *shProg) -{ - struct brw_context *brw = brw_context(ctx); - const struct brw_compiler *compiler = brw->screen->compiler; - unsigned int stage; - struct shader_info *infos[MESA_SHADER_STAGES] = { 0, }; - - if (shProg->data->LinkStatus == LINKING_SKIPPED) - return GL_TRUE; - - for (stage = 0; stage < ARRAY_SIZE(shProg->_LinkedShaders); stage++) { - struct gl_linked_shader *shader = shProg->_LinkedShaders[stage]; - if (!shader) - continue; - - struct gl_program *prog = shader->Program; - prog->Parameters = _mesa_new_parameter_list(); - - if (!shader->spirv_data) - process_glsl_ir(brw, shProg, shader); - - _mesa_copy_linked_program_data(shProg, shader); - - prog->ShadowSamplers = shader->shadow_samplers; - - bool debug_enabled = - (INTEL_DEBUG & intel_debug_flag_for_shader_stage(shader->Stage)); - - if (debug_enabled && shader->ir) { - fprintf(stderr, "GLSL IR for native %s shader %d:\n", - _mesa_shader_stage_to_string(shader->Stage), shProg->Name); - _mesa_print_ir(stderr, shader->ir, NULL); - fprintf(stderr, "\n\n"); - } - - prog->nir = brw_create_nir(brw, shProg, prog, (gl_shader_stage) stage, - compiler->scalar_stage[stage]); - } - - /* TODO: Verify if its feasible to split up the NIR linking work into a - * per-stage part (that fill out information we need for the passes) and a - * actual linking part, so that we could fold back brw_nir_lower_resources - * back into brw_create_nir. - */ - - /* SPIR-V programs use a NIR linker */ - if (shProg->data->spirv) { - static const gl_nir_linker_options opts = { - .fill_parameters = false, - }; - if (!gl_nir_link_spirv(ctx, shProg, &opts)) - return GL_FALSE; - } - - for (stage = 0; stage < ARRAY_SIZE(shProg->_LinkedShaders); stage++) { - struct gl_linked_shader *shader = shProg->_LinkedShaders[stage]; - if (!shader) - continue; - - struct gl_program *prog = shader->Program; - - brw_nir_lower_resources(prog->nir, shProg, prog, &brw->screen->devinfo); - - NIR_PASS_V(prog->nir, brw_nir_lower_gl_images, prog); - } - - /* Determine first and last stage. */ - unsigned first = MESA_SHADER_STAGES; - unsigned last = 0; - for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) { - if (!shProg->_LinkedShaders[i]) - continue; - if (first == MESA_SHADER_STAGES) - first = i; - last = i; - } - - /* Linking the stages in the opposite order (from fragment to vertex) - * ensures that inter-shader outputs written to in an earlier stage - * are eliminated if they are (transitively) not used in a later - * stage. - * - * TODO: Look into Shadow of Mordor regressions on HSW and enable this for - * all platforms. See: https://bugs.freedesktop.org/show_bug.cgi?id=103537 - */ - if (first != last && brw->screen->devinfo.ver >= 8) { - int next = last; - for (int i = next - 1; i >= 0; i--) { - if (shProg->_LinkedShaders[i] == NULL) - continue; - - brw_nir_link_shaders(compiler, - shProg->_LinkedShaders[i]->Program->nir, - shProg->_LinkedShaders[next]->Program->nir); - next = i; - } - } - - for (stage = 0; stage < ARRAY_SIZE(shProg->_LinkedShaders); stage++) { - struct gl_linked_shader *shader = shProg->_LinkedShaders[stage]; - if (!shader) - continue; - - struct gl_program *prog = shader->Program; - - _mesa_update_shader_textures_used(shProg, prog); - - brw_shader_gather_info(prog->nir, prog); - - NIR_PASS_V(prog->nir, gl_nir_lower_atomics, shProg, false); - NIR_PASS_V(prog->nir, nir_lower_atomics_to_ssbo); - - nir_sweep(prog->nir); - - infos[stage] = &prog->nir->info; - - update_xfb_info(prog->sh.LinkedTransformFeedback, infos[stage]); - - /* Make a pass over the IR to add state references for any built-in - * uniforms that are used. This has to be done now (during linking). - * Code generation doesn't happen until the first time this shader is - * used for rendering. Waiting until then to generate the parameters is - * too late. At that point, the values for the built-in uniforms won't - * get sent to the shader. - */ - nir_foreach_uniform_variable(var, prog->nir) { - const nir_state_slot *const slots = var->state_slots; - for (unsigned int i = 0; i < var->num_state_slots; i++) { - assert(slots != NULL); - _mesa_add_state_reference(prog->Parameters, slots[i].tokens); - } - } - } - - /* The linker tries to dead code eliminate unused varying components, - * and make sure interfaces match. But it isn't able to do so in all - * cases. So, explicitly make the interfaces match by OR'ing together - * the inputs_read/outputs_written bitfields of adjacent stages. - */ - if (!shProg->SeparateShader) - unify_interfaces(infos); - - if ((ctx->_Shader->Flags & GLSL_DUMP) && shProg->Name != 0) { - for (unsigned i = 0; i < shProg->NumShaders; i++) { - const struct gl_shader *sh = shProg->Shaders[i]; - if (!sh) - continue; - - fprintf(stderr, "GLSL %s shader %d source for linked program %d:\n", - _mesa_shader_stage_to_string(sh->Stage), - i, shProg->Name); - fprintf(stderr, "%s", sh->Source); - fprintf(stderr, "\n"); - } - } - - if (brw->precompile && !brw_shader_precompile(ctx, shProg)) - return GL_FALSE; - - /* SPIR-V programs build its resource list from linked NIR shaders. */ - if (!shProg->data->spirv) - build_program_resource_list(ctx, shProg, false); - else - nir_build_program_resource_list(ctx, shProg, true); - - for (stage = 0; stage < ARRAY_SIZE(shProg->_LinkedShaders); stage++) { - struct gl_linked_shader *shader = shProg->_LinkedShaders[stage]; - if (!shader) - continue; - - /* The GLSL IR won't be needed anymore. */ - ralloc_free(shader->ir); - shader->ir = NULL; - } - - return GL_TRUE; -} |