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| /* |
| * Copyright © 2012 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 "main/core.h" |
| #include "ir.h" |
| #include "linker.h" |
| #include "ir_uniform.h" |
| |
| /* These functions are put in a "private" namespace instead of being marked |
| * static so that the unit tests can access them. See |
| * http://code.google.com/p/googletest/wiki/AdvancedGuide#Testing_Private_Code |
| */ |
| namespace linker { |
| |
| gl_uniform_storage * |
| get_storage(gl_uniform_storage *storage, unsigned num_storage, |
| const char *name) |
| { |
| for (unsigned int i = 0; i < num_storage; i++) { |
| if (strcmp(name, storage[i].name) == 0) |
| return &storage[i]; |
| } |
| |
| return NULL; |
| } |
| |
| static unsigned |
| get_uniform_block_index(const gl_shader_program *shProg, |
| const char *uniformBlockName) |
| { |
| for (unsigned i = 0; i < shProg->NumUniformBlocks; i++) { |
| if (!strcmp(shProg->UniformBlocks[i].Name, uniformBlockName)) |
| return i; |
| } |
| |
| return GL_INVALID_INDEX; |
| } |
| |
| void |
| copy_constant_to_storage(union gl_constant_value *storage, |
| const ir_constant *val, |
| const enum glsl_base_type base_type, |
| const unsigned int elements, |
| unsigned int boolean_true) |
| { |
| for (unsigned int i = 0; i < elements; i++) { |
| switch (base_type) { |
| case GLSL_TYPE_UINT: |
| storage[i].u = val->value.u[i]; |
| break; |
| case GLSL_TYPE_INT: |
| case GLSL_TYPE_SAMPLER: |
| storage[i].i = val->value.i[i]; |
| break; |
| case GLSL_TYPE_FLOAT: |
| storage[i].f = val->value.f[i]; |
| break; |
| case GLSL_TYPE_DOUBLE: |
| /* XXX need to check on big-endian */ |
| storage[i * 2].u = *(uint32_t *)&val->value.d[i]; |
| storage[i * 2 + 1].u = *(((uint32_t *)&val->value.d[i]) + 1); |
| break; |
| case GLSL_TYPE_BOOL: |
| storage[i].b = val->value.b[i] ? boolean_true : 0; |
| break; |
| case GLSL_TYPE_ARRAY: |
| case GLSL_TYPE_STRUCT: |
| case GLSL_TYPE_IMAGE: |
| case GLSL_TYPE_ATOMIC_UINT: |
| case GLSL_TYPE_INTERFACE: |
| case GLSL_TYPE_VOID: |
| case GLSL_TYPE_ERROR: |
| /* All other types should have already been filtered by other |
| * paths in the caller. |
| */ |
| assert(!"Should not get here."); |
| break; |
| } |
| } |
| } |
| |
| void |
| set_sampler_binding(gl_shader_program *prog, const char *name, int binding) |
| { |
| struct gl_uniform_storage *const storage = |
| get_storage(prog->UniformStorage, prog->NumUserUniformStorage, name); |
| |
| if (storage == NULL) { |
| assert(storage != NULL); |
| return; |
| } |
| |
| const unsigned elements = MAX2(storage->array_elements, 1); |
| |
| /* Section 4.4.4 (Opaque-Uniform Layout Qualifiers) of the GLSL 4.20 spec |
| * says: |
| * |
| * "If the binding identifier is used with an array, the first element |
| * of the array takes the specified unit and each subsequent element |
| * takes the next consecutive unit." |
| */ |
| for (unsigned int i = 0; i < elements; i++) { |
| storage->storage[i].i = binding + i; |
| } |
| |
| for (int sh = 0; sh < MESA_SHADER_STAGES; sh++) { |
| gl_shader *shader = prog->_LinkedShaders[sh]; |
| |
| if (shader && storage->sampler[sh].active) { |
| for (unsigned i = 0; i < elements; i++) { |
| unsigned index = storage->sampler[sh].index + i; |
| |
| shader->SamplerUnits[index] = storage->storage[i].i; |
| } |
| } |
| } |
| |
| storage->initialized = true; |
| } |
| |
| void |
| set_block_binding(gl_shader_program *prog, const char *block_name, int binding) |
| { |
| const unsigned block_index = get_uniform_block_index(prog, block_name); |
| |
| if (block_index == GL_INVALID_INDEX) { |
| assert(block_index != GL_INVALID_INDEX); |
| return; |
| } |
| |
| /* This is a field of a UBO. val is the binding index. */ |
| for (int i = 0; i < MESA_SHADER_STAGES; i++) { |
| int stage_index = prog->UniformBlockStageIndex[i][block_index]; |
| |
| if (stage_index != -1) { |
| struct gl_shader *sh = prog->_LinkedShaders[i]; |
| sh->UniformBlocks[stage_index].Binding = binding; |
| } |
| } |
| } |
| |
| void |
| set_uniform_initializer(void *mem_ctx, gl_shader_program *prog, |
| const char *name, const glsl_type *type, |
| ir_constant *val, unsigned int boolean_true) |
| { |
| if (type->is_record()) { |
| ir_constant *field_constant; |
| |
| field_constant = (ir_constant *)val->components.get_head(); |
| |
| for (unsigned int i = 0; i < type->length; i++) { |
| const glsl_type *field_type = type->fields.structure[i].type; |
| const char *field_name = ralloc_asprintf(mem_ctx, "%s.%s", name, |
| type->fields.structure[i].name); |
| set_uniform_initializer(mem_ctx, prog, field_name, |
| field_type, field_constant, boolean_true); |
| field_constant = (ir_constant *)field_constant->next; |
| } |
| return; |
| } else if (type->is_array() && type->fields.array->is_record()) { |
| const glsl_type *const element_type = type->fields.array; |
| |
| for (unsigned int i = 0; i < type->length; i++) { |
| const char *element_name = ralloc_asprintf(mem_ctx, "%s[%d]", name, i); |
| |
| set_uniform_initializer(mem_ctx, prog, element_name, |
| element_type, val->array_elements[i], |
| boolean_true); |
| } |
| return; |
| } |
| |
| struct gl_uniform_storage *const storage = |
| get_storage(prog->UniformStorage, |
| prog->NumUserUniformStorage, |
| name); |
| if (storage == NULL) { |
| assert(storage != NULL); |
| return; |
| } |
| |
| if (val->type->is_array()) { |
| const enum glsl_base_type base_type = |
| val->array_elements[0]->type->base_type; |
| const unsigned int elements = val->array_elements[0]->type->components(); |
| unsigned int idx = 0; |
| unsigned dmul = (base_type == GLSL_TYPE_DOUBLE) ? 2 : 1; |
| |
| assert(val->type->length >= storage->array_elements); |
| for (unsigned int i = 0; i < storage->array_elements; i++) { |
| copy_constant_to_storage(& storage->storage[idx], |
| val->array_elements[i], |
| base_type, |
| elements, |
| boolean_true); |
| |
| idx += elements * dmul; |
| } |
| } else { |
| copy_constant_to_storage(storage->storage, |
| val, |
| val->type->base_type, |
| val->type->components(), |
| boolean_true); |
| |
| if (storage->type->is_sampler()) { |
| for (int sh = 0; sh < MESA_SHADER_STAGES; sh++) { |
| gl_shader *shader = prog->_LinkedShaders[sh]; |
| |
| if (shader && storage->sampler[sh].active) { |
| unsigned index = storage->sampler[sh].index; |
| |
| shader->SamplerUnits[index] = storage->storage[0].i; |
| } |
| } |
| } |
| } |
| |
| storage->initialized = true; |
| } |
| } |
| |
| void |
| link_set_uniform_initializers(struct gl_shader_program *prog, |
| unsigned int boolean_true) |
| { |
| void *mem_ctx = NULL; |
| |
| for (unsigned int i = 0; i < MESA_SHADER_STAGES; i++) { |
| struct gl_shader *shader = prog->_LinkedShaders[i]; |
| |
| if (shader == NULL) |
| continue; |
| |
| foreach_in_list(ir_instruction, node, shader->ir) { |
| ir_variable *const var = node->as_variable(); |
| |
| if (!var || var->data.mode != ir_var_uniform) |
| continue; |
| |
| if (!mem_ctx) |
| mem_ctx = ralloc_context(NULL); |
| |
| if (var->data.explicit_binding) { |
| const glsl_type *const type = var->type; |
| |
| if (type->without_array()->is_sampler()) { |
| linker::set_sampler_binding(prog, var->name, var->data.binding); |
| } else if (var->is_in_uniform_block()) { |
| const glsl_type *const iface_type = var->get_interface_type(); |
| |
| /* If the variable is an array and it is an interface instance, |
| * we need to set the binding for each array element. Just |
| * checking that the variable is an array is not sufficient. |
| * The variable could be an array element of a uniform block |
| * that lacks an instance name. For example: |
| * |
| * uniform U { |
| * float f[4]; |
| * }; |
| * |
| * In this case "f" would pass is_in_uniform_block (above) and |
| * type->is_array(), but it will fail is_interface_instance(). |
| */ |
| if (var->is_interface_instance() && var->type->is_array()) { |
| for (unsigned i = 0; i < var->type->length; i++) { |
| const char *name = |
| ralloc_asprintf(mem_ctx, "%s[%u]", iface_type->name, i); |
| |
| /* Section 4.4.3 (Uniform Block Layout Qualifiers) of the |
| * GLSL 4.20 spec says: |
| * |
| * "If the binding identifier is used with a uniform |
| * block instanced as an array then the first element |
| * of the array takes the specified block binding and |
| * each subsequent element takes the next consecutive |
| * uniform block binding point." |
| */ |
| linker::set_block_binding(prog, name, |
| var->data.binding + i); |
| } |
| } else { |
| linker::set_block_binding(prog, iface_type->name, |
| var->data.binding); |
| } |
| } else if (type->contains_atomic()) { |
| /* we don't actually need to do anything. */ |
| } else { |
| assert(!"Explicit binding not on a sampler, UBO or atomic."); |
| } |
| } else if (var->constant_value) { |
| linker::set_uniform_initializer(mem_ctx, prog, var->name, |
| var->type, var->constant_value, |
| boolean_true); |
| } |
| } |
| } |
| |
| ralloc_free(mem_ctx); |
| } |