| /* |
| * 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_shader.h" |
| #include "brw_nir.h" |
| #include "compiler/glsl/ir_uniform.h" |
| |
| static void |
| brw_nir_setup_glsl_builtin_uniform(nir_variable *var, |
| const struct gl_program *prog, |
| struct brw_stage_prog_data *stage_prog_data, |
| bool is_scalar) |
| { |
| const nir_state_slot *const slots = var->state_slots; |
| assert(var->state_slots != NULL); |
| |
| unsigned uniform_index = var->data.driver_location / 4; |
| for (unsigned int i = 0; i < var->num_state_slots; i++) { |
| /* This state reference has already been setup by ir_to_mesa, but we'll |
| * get the same index back here. |
| */ |
| int index = _mesa_add_state_reference(prog->Parameters, |
| (gl_state_index *)slots[i].tokens); |
| |
| /* Add each of the unique swizzles of the element as a parameter. |
| * This'll end up matching the expected layout of the |
| * array/matrix/structure we're trying to fill in. |
| */ |
| int last_swiz = -1; |
| for (unsigned j = 0; j < 4; j++) { |
| int swiz = GET_SWZ(slots[i].swizzle, j); |
| |
| /* If we hit a pair of identical swizzles, this means we've hit the |
| * end of the builtin variable. In scalar mode, we should just quit |
| * and move on to the next one. In vec4, we need to continue and pad |
| * it out to 4 components. |
| */ |
| if (swiz == last_swiz && is_scalar) |
| break; |
| |
| last_swiz = swiz; |
| |
| stage_prog_data->param[uniform_index++] = |
| &prog->Parameters->ParameterValues[index][swiz]; |
| } |
| } |
| } |
| |
| static void |
| brw_nir_setup_glsl_uniform(gl_shader_stage stage, nir_variable *var, |
| struct gl_shader_program *shader_prog, |
| struct brw_stage_prog_data *stage_prog_data, |
| bool is_scalar) |
| { |
| int namelen = strlen(var->name); |
| |
| /* The data for our (non-builtin) uniforms is stored in a series of |
| * gl_uniform_storage structs for each subcomponent that |
| * glGetUniformLocation() could name. We know it's been set up in the same |
| * order we'd walk the type, so walk the list of storage and find anything |
| * with our name, or the prefix of a component that starts with our name. |
| */ |
| unsigned uniform_index = var->data.driver_location / 4; |
| for (unsigned u = 0; u < shader_prog->data->NumUniformStorage; u++) { |
| struct gl_uniform_storage *storage = |
| &shader_prog->data->UniformStorage[u]; |
| |
| if (storage->builtin) |
| continue; |
| |
| if (strncmp(var->name, storage->name, namelen) != 0 || |
| (storage->name[namelen] != 0 && |
| storage->name[namelen] != '.' && |
| storage->name[namelen] != '[')) { |
| continue; |
| } |
| |
| if (storage->type->is_image()) { |
| brw_setup_image_uniform_values(stage, stage_prog_data, |
| uniform_index, storage); |
| uniform_index += |
| BRW_IMAGE_PARAM_SIZE * MAX2(storage->array_elements, 1); |
| } else { |
| gl_constant_value *components = storage->storage; |
| unsigned vector_count = (MAX2(storage->array_elements, 1) * |
| storage->type->matrix_columns); |
| unsigned vector_size = storage->type->vector_elements; |
| unsigned max_vector_size = 4; |
| if (storage->type->base_type == GLSL_TYPE_DOUBLE) { |
| vector_size *= 2; |
| max_vector_size *= 2; |
| } |
| |
| for (unsigned s = 0; s < vector_count; s++) { |
| unsigned i; |
| for (i = 0; i < vector_size; i++) { |
| stage_prog_data->param[uniform_index++] = components++; |
| } |
| |
| if (!is_scalar) { |
| /* Pad out with zeros if needed (only needed for vec4) */ |
| for (; i < max_vector_size; i++) { |
| static const gl_constant_value zero = { 0.0 }; |
| stage_prog_data->param[uniform_index++] = &zero; |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| void |
| brw_nir_setup_glsl_uniforms(nir_shader *shader, |
| struct gl_shader_program *shader_prog, |
| const struct gl_program *prog, |
| struct brw_stage_prog_data *stage_prog_data, |
| bool is_scalar) |
| { |
| nir_foreach_variable(var, &shader->uniforms) { |
| /* UBO's, atomics and samplers don't take up space in the |
| uniform file */ |
| if (var->interface_type != NULL || var->type->contains_atomic()) |
| continue; |
| |
| if (strncmp(var->name, "gl_", 3) == 0) { |
| brw_nir_setup_glsl_builtin_uniform(var, prog, stage_prog_data, |
| is_scalar); |
| } else { |
| brw_nir_setup_glsl_uniform(shader->stage, var, shader_prog, |
| stage_prog_data, is_scalar); |
| } |
| } |
| } |
| |
| void |
| brw_nir_setup_arb_uniforms(nir_shader *shader, struct gl_program *prog, |
| struct brw_stage_prog_data *stage_prog_data) |
| { |
| struct gl_program_parameter_list *plist = prog->Parameters; |
| |
| /* For ARB programs, prog_to_nir generates a single "parameters" variable |
| * for all uniform data. nir_lower_wpos_ytransform may also create an |
| * additional variable. |
| */ |
| assert(shader->uniforms.length() <= 2); |
| |
| for (unsigned p = 0; p < plist->NumParameters; p++) { |
| /* Parameters should be either vec4 uniforms or single component |
| * constants; matrices and other larger types should have been broken |
| * down earlier. |
| */ |
| assert(plist->Parameters[p].Size <= 4); |
| |
| unsigned i; |
| for (i = 0; i < plist->Parameters[p].Size; i++) { |
| stage_prog_data->param[4 * p + i] = &plist->ParameterValues[p][i]; |
| } |
| for (; i < 4; i++) { |
| static const gl_constant_value zero = { 0.0 }; |
| stage_prog_data->param[4 * p + i] = &zero; |
| } |
| } |
| } |
