diff options
Diffstat (limited to 'mesalib/src/glsl/link_uniform_initializers.cpp')
| -rw-r--r-- | mesalib/src/glsl/link_uniform_initializers.cpp | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/mesalib/src/glsl/link_uniform_initializers.cpp b/mesalib/src/glsl/link_uniform_initializers.cpp new file mode 100644 index 000000000..849e08097 --- /dev/null +++ b/mesalib/src/glsl/link_uniform_initializers.cpp @@ -0,0 +1,181 @@ +/* + * 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" +#include "glsl_symbol_table.h" +#include "program/hash_table.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; +} + +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) +{ + 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_BOOL: + storage[i].b = int(val->value.b[i]); + break; + default: + /* All other types should have already been filtered by other + * paths in the caller. + */ + assert(!"Should not get here."); + break; + } + } +} + +void +set_uniform_initializer(void *mem_ctx, gl_shader_program *prog, + const char *name, const glsl_type *type, + ir_constant *val) +{ + 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); + 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]); + } + 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; + + 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); + + idx += elements; + } + + if (base_type == GLSL_TYPE_SAMPLER) { + for (unsigned int i = 0; i < storage->array_elements; i++) { + prog->SamplerUnits[storage->sampler + i] = storage->storage[i].i; + } + } + } else { + copy_constant_to_storage(storage->storage, + val, + val->type->base_type, + val->type->components()); + + if (storage->type->is_sampler()) + prog->SamplerUnits[storage->sampler] = storage->storage[0].i; + } + + storage->initialized = true; +} +} + +void +link_set_uniform_initializers(struct gl_shader_program *prog) +{ + void *mem_ctx = NULL; + + for (unsigned int i = 0; i < MESA_SHADER_TYPES; i++) { + struct gl_shader *shader = prog->_LinkedShaders[i]; + + if (shader == NULL) + continue; + + foreach_list(node, shader->ir) { + ir_variable *const var = ((ir_instruction *) node)->as_variable(); + + if (!var || var->mode != ir_var_uniform || !var->constant_value) + continue; + + if (!mem_ctx) + mem_ctx = ralloc_context(NULL); + + linker::set_uniform_initializer(mem_ctx, prog, var->name, + var->type, var->constant_value); + } + } + + ralloc_free(mem_ctx); +} |