313 lines
11 KiB
C++
313 lines
11 KiB
C++
/*
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* Copyright © 2012 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "ir.h"
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#include "linker.h"
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#include "ir_uniform.h"
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#include "string_to_uint_map.h"
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#include "main/mtypes.h"
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/* These functions are put in a "private" namespace instead of being marked
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* static so that the unit tests can access them. See
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* http://code.google.com/p/googletest/wiki/AdvancedGuide#Testing_Private_Code
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*/
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namespace linker {
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static gl_uniform_storage *
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get_storage(struct gl_shader_program *prog, const char *name)
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{
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unsigned id;
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if (prog->UniformHash->get(id, name))
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return &prog->data->UniformStorage[id];
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assert(!"No uniform storage found!");
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return NULL;
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}
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void
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copy_constant_to_storage(union gl_constant_value *storage,
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const ir_constant *val,
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const enum glsl_base_type base_type,
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const unsigned int elements,
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unsigned int boolean_true)
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{
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for (unsigned int i = 0; i < elements; i++) {
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switch (base_type) {
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case GLSL_TYPE_UINT:
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storage[i].u = val->value.u[i];
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break;
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case GLSL_TYPE_INT:
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case GLSL_TYPE_SAMPLER:
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storage[i].i = val->value.i[i];
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break;
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case GLSL_TYPE_FLOAT:
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storage[i].f = val->value.f[i];
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break;
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case GLSL_TYPE_DOUBLE:
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case GLSL_TYPE_UINT64:
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case GLSL_TYPE_INT64:
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/* XXX need to check on big-endian */
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memcpy(&storage[i * 2].u, &val->value.d[i], sizeof(double));
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break;
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case GLSL_TYPE_BOOL:
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storage[i].b = val->value.b[i] ? boolean_true : 0;
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break;
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case GLSL_TYPE_ARRAY:
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case GLSL_TYPE_STRUCT:
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case GLSL_TYPE_TEXTURE:
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case GLSL_TYPE_IMAGE:
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case GLSL_TYPE_ATOMIC_UINT:
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case GLSL_TYPE_INTERFACE:
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case GLSL_TYPE_VOID:
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case GLSL_TYPE_SUBROUTINE:
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case GLSL_TYPE_FUNCTION:
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case GLSL_TYPE_ERROR:
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case GLSL_TYPE_UINT16:
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case GLSL_TYPE_INT16:
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case GLSL_TYPE_UINT8:
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case GLSL_TYPE_INT8:
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case GLSL_TYPE_FLOAT16:
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/* All other types should have already been filtered by other
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* paths in the caller.
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*/
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assert(!"Should not get here.");
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break;
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}
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}
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}
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/**
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* Initialize an opaque uniform from the value of an explicit binding
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* qualifier specified in the shader. Atomic counters are different because
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* they have no storage and should be handled elsewhere.
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*/
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static void
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set_opaque_binding(void *mem_ctx, gl_shader_program *prog,
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const ir_variable *var, const glsl_type *type,
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const char *name, int *binding)
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{
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if (type->is_array() && type->fields.array->is_array()) {
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const glsl_type *const element_type = type->fields.array;
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for (unsigned int i = 0; i < type->length; i++) {
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const char *element_name = ralloc_asprintf(mem_ctx, "%s[%d]", name, i);
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set_opaque_binding(mem_ctx, prog, var, element_type,
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element_name, binding);
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}
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} else {
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struct gl_uniform_storage *const storage = get_storage(prog, name);
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if (!storage)
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return;
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const unsigned elements = MAX2(storage->array_elements, 1);
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/* Section 4.4.6 (Opaque-Uniform Layout Qualifiers) of the GLSL 4.50 spec
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* says:
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*
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* "If the binding identifier is used with an array, the first element
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* of the array takes the specified unit and each subsequent element
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* takes the next consecutive unit."
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*/
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for (unsigned int i = 0; i < elements; i++) {
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storage->storage[i].i = (*binding)++;
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}
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for (int sh = 0; sh < MESA_SHADER_STAGES; sh++) {
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gl_linked_shader *shader = prog->_LinkedShaders[sh];
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if (!shader)
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continue;
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if (!storage->opaque[sh].active)
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continue;
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if (storage->type->is_sampler()) {
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for (unsigned i = 0; i < elements; i++) {
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const unsigned index = storage->opaque[sh].index + i;
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if (var->data.bindless) {
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if (index >= shader->Program->sh.NumBindlessSamplers)
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break;
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shader->Program->sh.BindlessSamplers[index].unit =
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storage->storage[i].i;
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shader->Program->sh.BindlessSamplers[index].bound = true;
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shader->Program->sh.HasBoundBindlessSampler = true;
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} else {
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if (index >= ARRAY_SIZE(shader->Program->SamplerUnits))
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break;
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shader->Program->SamplerUnits[index] =
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storage->storage[i].i;
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}
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}
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} else if (storage->type->is_image()) {
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for (unsigned i = 0; i < elements; i++) {
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const unsigned index = storage->opaque[sh].index + i;
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if (var->data.bindless) {
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if (index >= shader->Program->sh.NumBindlessImages)
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break;
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shader->Program->sh.BindlessImages[index].unit =
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storage->storage[i].i;
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shader->Program->sh.BindlessImages[index].bound = true;
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shader->Program->sh.HasBoundBindlessImage = true;
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} else {
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if (index >= ARRAY_SIZE(shader->Program->sh.ImageUnits))
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break;
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shader->Program->sh.ImageUnits[index] =
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storage->storage[i].i;
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}
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}
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}
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}
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}
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}
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void
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set_uniform_initializer(void *mem_ctx, gl_shader_program *prog,
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const char *name, const glsl_type *type,
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ir_constant *val, unsigned int boolean_true)
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{
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const glsl_type *t_without_array = type->without_array();
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if (type->is_struct()) {
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for (unsigned int i = 0; i < type->length; i++) {
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const glsl_type *field_type = type->fields.structure[i].type;
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const char *field_name = ralloc_asprintf(mem_ctx, "%s.%s", name,
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type->fields.structure[i].name);
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set_uniform_initializer(mem_ctx, prog, field_name,
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field_type, val->get_record_field(i),
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boolean_true);
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}
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return;
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} else if (t_without_array->is_struct() ||
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(type->is_array() && type->fields.array->is_array())) {
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const glsl_type *const element_type = type->fields.array;
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for (unsigned int i = 0; i < type->length; i++) {
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const char *element_name = ralloc_asprintf(mem_ctx, "%s[%d]", name, i);
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set_uniform_initializer(mem_ctx, prog, element_name,
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element_type, val->const_elements[i],
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boolean_true);
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}
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return;
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}
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struct gl_uniform_storage *const storage = get_storage(prog, name);
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if (!storage)
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return;
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if (val->type->is_array()) {
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const enum glsl_base_type base_type =
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val->const_elements[0]->type->base_type;
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const unsigned int elements = val->const_elements[0]->type->components();
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unsigned int idx = 0;
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unsigned dmul = glsl_base_type_is_64bit(base_type) ? 2 : 1;
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assert(val->type->length >= storage->array_elements);
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for (unsigned int i = 0; i < storage->array_elements; i++) {
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copy_constant_to_storage(& storage->storage[idx],
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val->const_elements[i],
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base_type,
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elements,
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boolean_true);
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idx += elements * dmul;
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}
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} else {
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copy_constant_to_storage(storage->storage,
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val,
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val->type->base_type,
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val->type->components(),
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boolean_true);
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if (storage->type->is_sampler()) {
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for (int sh = 0; sh < MESA_SHADER_STAGES; sh++) {
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gl_linked_shader *shader = prog->_LinkedShaders[sh];
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if (shader && storage->opaque[sh].active) {
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unsigned index = storage->opaque[sh].index;
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shader->Program->SamplerUnits[index] = storage->storage[0].i;
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}
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}
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}
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}
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}
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}
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void
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link_set_uniform_initializers(struct gl_shader_program *prog,
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unsigned int boolean_true)
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{
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void *mem_ctx = NULL;
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for (unsigned int i = 0; i < MESA_SHADER_STAGES; i++) {
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struct gl_linked_shader *shader = prog->_LinkedShaders[i];
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if (shader == NULL)
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continue;
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foreach_in_list(ir_instruction, node, shader->ir) {
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ir_variable *const var = node->as_variable();
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if (!var || (var->data.mode != ir_var_uniform &&
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var->data.mode != ir_var_shader_storage))
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continue;
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if (!mem_ctx)
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mem_ctx = ralloc_context(NULL);
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if (var->data.explicit_binding) {
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const glsl_type *const type = var->type;
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if (var->is_in_buffer_block()) {
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/* This case is handled by link_uniform_blocks (at
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* process_block_array_leaf)
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*/
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} else if (type->without_array()->is_sampler() ||
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type->without_array()->is_image()) {
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int binding = var->data.binding;
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linker::set_opaque_binding(mem_ctx, prog, var, var->type,
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var->name, &binding);
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} else if (type->contains_atomic()) {
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/* we don't actually need to do anything. */
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} else {
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assert(!"Explicit binding not on a sampler, UBO or atomic.");
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}
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} else if (var->constant_initializer) {
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linker::set_uniform_initializer(mem_ctx, prog, var->name,
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var->type, var->constant_initializer,
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boolean_true);
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}
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}
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}
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memcpy(prog->data->UniformDataDefaults, prog->data->UniformDataSlots,
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sizeof(union gl_constant_value) * prog->data->NumUniformDataSlots);
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ralloc_free(mem_ctx);
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}
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