Esempi in C++ (Cpp) per nir_assign_var_locations

Esempio n. 1

File: brw_program.c Progetto: Kalamatee/mesa

static void
brw_nir_lower_uniforms(nir_shader *nir, bool is_scalar)
{
   if (is_scalar) {
      nir_assign_var_locations(&nir->uniforms, &nir->num_uniforms, 0,
                               type_size_scalar_bytes);
      nir_lower_io(nir, nir_var_uniform, type_size_scalar_bytes);
   } else {
      nir_assign_var_locations(&nir->uniforms, &nir->num_uniforms, 0,
                               type_size_vec4_bytes);
      nir_lower_io(nir, nir_var_uniform, type_size_vec4_bytes);
   }
}

Esempio n. 2

File: brw_nir.c Progetto: zhumj1231/mesa3d

nir_shader *
brw_create_nir(struct brw_context *brw,
               const struct gl_shader_program *shader_prog,
               const struct gl_program *prog,
               gl_shader_stage stage,
               bool is_scalar)
{
   struct gl_context *ctx = &brw->ctx;
   const nir_shader_compiler_options *options =
      ctx->Const.ShaderCompilerOptions[stage].NirOptions;
   struct gl_shader *shader = shader_prog ? shader_prog->_LinkedShaders[stage] : NULL;
   bool debug_enabled = INTEL_DEBUG & intel_debug_flag_for_shader_stage(stage);
   nir_shader *nir;

   /* First, lower the GLSL IR or Mesa IR to NIR */
   if (shader_prog) {
      nir = glsl_to_nir(shader, options);
   } else {
      nir = prog_to_nir(prog, options);
      nir_convert_to_ssa(nir); /* turn registers into SSA */
   }
   nir_validate_shader(nir);

   nir_lower_global_vars_to_local(nir);
   nir_validate_shader(nir);

   nir_lower_tex_projector(nir);
   nir_validate_shader(nir);

   nir_normalize_cubemap_coords(nir);
   nir_validate_shader(nir);

   nir_split_var_copies(nir);
   nir_validate_shader(nir);

   nir_optimize(nir, is_scalar);

   /* Lower a bunch of stuff */
   nir_lower_var_copies(nir);
   nir_validate_shader(nir);

   /* Get rid of split copies */
   nir_optimize(nir, is_scalar);

   if (is_scalar) {
      nir_assign_var_locations(&nir->uniforms,
                               &nir->num_uniforms,
                               type_size_scalar);
      nir_assign_var_locations(&nir->inputs, &nir->num_inputs, type_size_scalar);
      nir_assign_var_locations(&nir->outputs, &nir->num_outputs, type_size_scalar);
      nir_lower_io(nir, type_size_scalar);
   } else {
      nir_assign_var_locations(&nir->uniforms,
                               &nir->num_uniforms,
                               type_size_vec4);

      nir_assign_var_locations(&nir->inputs, &nir->num_inputs, type_size_vec4);

      foreach_list_typed(nir_variable, var, node, &nir->outputs)
         var->data.driver_location = var->data.location;

      nir_lower_io(nir, type_size_vec4);
   }

   nir_validate_shader(nir);

   nir_remove_dead_variables(nir);
   nir_validate_shader(nir);

   if (shader_prog) {
      nir_lower_samplers(nir, shader_prog);
      nir_validate_shader(nir);
   }

   nir_lower_system_values(nir);
   nir_validate_shader(nir);

   nir_lower_atomics(nir);
   nir_validate_shader(nir);

   nir_optimize(nir, is_scalar);

   if (brw->gen >= 6) {
      /* Try and fuse multiply-adds */
      nir_opt_peephole_ffma(nir);
      nir_validate_shader(nir);
   }

   nir_opt_algebraic_late(nir);
   nir_validate_shader(nir);

   nir_lower_locals_to_regs(nir);
   nir_validate_shader(nir);

   nir_lower_to_source_mods(nir);
   nir_validate_shader(nir);
   nir_copy_prop(nir);
   nir_validate_shader(nir);
   nir_opt_dce(nir);
   nir_validate_shader(nir);

   if (unlikely(debug_enabled)) {
      /* Re-index SSA defs so we print more sensible numbers. */
      nir_foreach_overload(nir, overload) {
         if (overload->impl)
            nir_index_ssa_defs(overload->impl);
      }

      fprintf(stderr, "NIR (SSA form) for %s shader:\n",
              _mesa_shader_stage_to_string(stage));
      nir_print_shader(nir, stderr);
   }

   nir_convert_from_ssa(nir, is_scalar);
   nir_validate_shader(nir);

   if (!is_scalar) {
      nir_lower_vec_to_movs(nir);
      nir_validate_shader(nir);
   }

   /* This is the last pass we run before we start emitting stuff.  It
    * determines when we need to insert boolean resolves on Gen <= 5.  We
    * run it last because it stashes data in instr->pass_flags and we don't
    * want that to be squashed by other NIR passes.
    */
   if (brw->gen <= 5)
      brw_nir_analyze_boolean_resolves(nir);

   nir_sweep(nir);

   if (unlikely(debug_enabled)) {
      fprintf(stderr, "NIR (final form) for %s shader:\n",
              _mesa_shader_stage_to_string(stage));
      nir_print_shader(nir, stderr);
   }

   return nir;
}