2563 lines
95 KiB
C++
2563 lines
95 KiB
C++
/*
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* Copyright © 2010 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 "glsl_symbol_table.h"
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#include "ast.h"
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#include "compiler/glsl_types.h"
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#include "ir.h"
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#include "main/shader_types.h"
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#include "main/consts_exts.h"
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#include "main/shaderobj.h"
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#include "builtin_functions.h"
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static ir_rvalue *
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convert_component(ir_rvalue *src, const glsl_type *desired_type);
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static unsigned
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process_parameters(exec_list *instructions, exec_list *actual_parameters,
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exec_list *parameters,
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struct _mesa_glsl_parse_state *state)
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{
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void *mem_ctx = state;
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unsigned count = 0;
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foreach_list_typed(ast_node, ast, link, parameters) {
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/* We need to process the parameters first in order to know if we can
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* raise or not a unitialized warning. Calling set_is_lhs silence the
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* warning for now. Raising the warning or not will be checked at
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* verify_parameter_modes.
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*/
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ast->set_is_lhs(true);
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ir_rvalue *result = ast->hir(instructions, state);
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/* Error happened processing function parameter */
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if (!result) {
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actual_parameters->push_tail(ir_rvalue::error_value(mem_ctx));
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count++;
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continue;
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}
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ir_constant *const constant =
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result->constant_expression_value(mem_ctx);
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if (constant != NULL)
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result = constant;
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actual_parameters->push_tail(result);
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count++;
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}
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return count;
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}
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/**
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* Generate a source prototype for a function signature
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*
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* \param return_type Return type of the function. May be \c NULL.
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* \param name Name of the function.
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* \param parameters List of \c ir_instruction nodes representing the
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* parameter list for the function. This may be either a
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* formal (\c ir_variable) or actual (\c ir_rvalue)
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* parameter list. Only the type is used.
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*
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* \return
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* A ralloced string representing the prototype of the function.
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*/
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char *
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prototype_string(const glsl_type *return_type, const char *name,
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exec_list *parameters)
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{
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char *str = NULL;
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if (return_type != NULL)
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str = ralloc_asprintf(NULL, "%s ", return_type->name);
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ralloc_asprintf_append(&str, "%s(", name);
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const char *comma = "";
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foreach_in_list(const ir_variable, param, parameters) {
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ralloc_asprintf_append(&str, "%s%s", comma, param->type->name);
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comma = ", ";
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}
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ralloc_strcat(&str, ")");
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return str;
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}
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static bool
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verify_image_parameter(YYLTYPE *loc, _mesa_glsl_parse_state *state,
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const ir_variable *formal, const ir_variable *actual)
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{
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/**
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* From the ARB_shader_image_load_store specification:
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*
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* "The values of image variables qualified with coherent,
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* volatile, restrict, readonly, or writeonly may not be passed
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* to functions whose formal parameters lack such
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* qualifiers. [...] It is legal to have additional qualifiers
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* on a formal parameter, but not to have fewer."
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*/
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if (actual->data.memory_coherent && !formal->data.memory_coherent) {
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_mesa_glsl_error(loc, state,
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"function call parameter `%s' drops "
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"`coherent' qualifier", formal->name);
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return false;
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}
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if (actual->data.memory_volatile && !formal->data.memory_volatile) {
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_mesa_glsl_error(loc, state,
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"function call parameter `%s' drops "
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"`volatile' qualifier", formal->name);
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return false;
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}
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if (actual->data.memory_restrict && !formal->data.memory_restrict) {
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_mesa_glsl_error(loc, state,
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"function call parameter `%s' drops "
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"`restrict' qualifier", formal->name);
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return false;
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}
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if (actual->data.memory_read_only && !formal->data.memory_read_only) {
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_mesa_glsl_error(loc, state,
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"function call parameter `%s' drops "
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"`readonly' qualifier", formal->name);
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return false;
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}
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if (actual->data.memory_write_only && !formal->data.memory_write_only) {
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_mesa_glsl_error(loc, state,
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"function call parameter `%s' drops "
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"`writeonly' qualifier", formal->name);
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return false;
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}
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return true;
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}
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static bool
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verify_first_atomic_parameter(YYLTYPE *loc, _mesa_glsl_parse_state *state,
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ir_variable *var)
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{
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if (!var ||
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(!var->is_in_shader_storage_block() &&
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var->data.mode != ir_var_shader_shared)) {
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_mesa_glsl_error(loc, state, "First argument to atomic function "
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"must be a buffer or shared variable");
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return false;
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}
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return true;
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}
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static bool
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is_atomic_function(const char *func_name)
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{
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return !strcmp(func_name, "atomicAdd") ||
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!strcmp(func_name, "atomicMin") ||
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!strcmp(func_name, "atomicMax") ||
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!strcmp(func_name, "atomicAnd") ||
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!strcmp(func_name, "atomicOr") ||
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!strcmp(func_name, "atomicXor") ||
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!strcmp(func_name, "atomicExchange") ||
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!strcmp(func_name, "atomicCompSwap");
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}
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static bool
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verify_atomic_image_parameter_qualifier(YYLTYPE *loc, _mesa_glsl_parse_state *state,
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ir_variable *var)
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{
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if (!var ||
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(var->data.image_format != PIPE_FORMAT_R32_UINT &&
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var->data.image_format != PIPE_FORMAT_R32_SINT &&
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var->data.image_format != PIPE_FORMAT_R32_FLOAT)) {
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_mesa_glsl_error(loc, state, "Image atomic functions should use r32i/r32ui "
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"format qualifier");
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return false;
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}
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return true;
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}
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static bool
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is_atomic_image_function(const char *func_name)
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{
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return !strcmp(func_name, "imageAtomicAdd") ||
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!strcmp(func_name, "imageAtomicMin") ||
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!strcmp(func_name, "imageAtomicMax") ||
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!strcmp(func_name, "imageAtomicAnd") ||
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!strcmp(func_name, "imageAtomicOr") ||
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!strcmp(func_name, "imageAtomicXor") ||
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!strcmp(func_name, "imageAtomicExchange") ||
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!strcmp(func_name, "imageAtomicCompSwap") ||
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!strcmp(func_name, "imageAtomicIncWrap") ||
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!strcmp(func_name, "imageAtomicDecWrap");
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}
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/**
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* Verify that 'out' and 'inout' actual parameters are lvalues. Also, verify
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* that 'const_in' formal parameters (an extension in our IR) correspond to
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* ir_constant actual parameters.
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*/
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static bool
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verify_parameter_modes(_mesa_glsl_parse_state *state,
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ir_function_signature *sig,
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exec_list &actual_ir_parameters,
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exec_list &actual_ast_parameters)
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{
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exec_node *actual_ir_node = actual_ir_parameters.get_head_raw();
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exec_node *actual_ast_node = actual_ast_parameters.get_head_raw();
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foreach_in_list(const ir_variable, formal, &sig->parameters) {
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/* The lists must be the same length. */
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assert(!actual_ir_node->is_tail_sentinel());
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assert(!actual_ast_node->is_tail_sentinel());
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const ir_rvalue *const actual = (ir_rvalue *) actual_ir_node;
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const ast_expression *const actual_ast =
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exec_node_data(ast_expression, actual_ast_node, link);
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YYLTYPE loc = actual_ast->get_location();
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/* Verify that 'const_in' parameters are ir_constants. */
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if (formal->data.mode == ir_var_const_in &&
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actual->ir_type != ir_type_constant) {
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_mesa_glsl_error(&loc, state,
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"parameter `in %s' must be a constant expression",
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formal->name);
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return false;
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}
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/* Verify that shader_in parameters are shader inputs */
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if (formal->data.must_be_shader_input) {
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const ir_rvalue *val = actual;
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/* GLSL 4.40 allows swizzles, while earlier GLSL versions do not. */
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if (val->ir_type == ir_type_swizzle) {
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if (!state->is_version(440, 0)) {
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_mesa_glsl_error(&loc, state,
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"parameter `%s` must not be swizzled",
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formal->name);
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return false;
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}
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val = ((ir_swizzle *)val)->val;
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}
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for (;;) {
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if (val->ir_type == ir_type_dereference_array) {
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val = ((ir_dereference_array *)val)->array;
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} else if (val->ir_type == ir_type_dereference_record &&
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!state->es_shader) {
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val = ((ir_dereference_record *)val)->record;
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} else
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break;
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}
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ir_variable *var = NULL;
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if (const ir_dereference_variable *deref_var = val->as_dereference_variable())
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var = deref_var->variable_referenced();
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if (!var || var->data.mode != ir_var_shader_in) {
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_mesa_glsl_error(&loc, state,
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"parameter `%s` must be a shader input",
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formal->name);
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return false;
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}
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var->data.must_be_shader_input = 1;
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}
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/* Verify that 'out' and 'inout' actual parameters are lvalues. */
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if (formal->data.mode == ir_var_function_out
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|| formal->data.mode == ir_var_function_inout) {
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const char *mode = NULL;
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switch (formal->data.mode) {
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case ir_var_function_out: mode = "out"; break;
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case ir_var_function_inout: mode = "inout"; break;
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default: assert(false); break;
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}
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/* This AST-based check catches errors like f(i++). The IR-based
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* is_lvalue() is insufficient because the actual parameter at the
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* IR-level is just a temporary value, which is an l-value.
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*/
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if (actual_ast->non_lvalue_description != NULL) {
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_mesa_glsl_error(&loc, state,
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"function parameter '%s %s' references a %s",
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mode, formal->name,
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actual_ast->non_lvalue_description);
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return false;
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}
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ir_variable *var = actual->variable_referenced();
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if (var && formal->data.mode == ir_var_function_inout) {
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if ((var->data.mode == ir_var_auto ||
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var->data.mode == ir_var_shader_out) &&
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!var->data.assigned &&
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!is_gl_identifier(var->name)) {
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_mesa_glsl_warning(&loc, state, "`%s' used uninitialized",
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var->name);
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}
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}
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if (var)
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var->data.assigned = true;
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if (var && var->data.read_only) {
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_mesa_glsl_error(&loc, state,
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"function parameter '%s %s' references the "
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"read-only variable '%s'",
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mode, formal->name,
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actual->variable_referenced()->name);
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return false;
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} else if (!actual->is_lvalue(state)) {
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_mesa_glsl_error(&loc, state,
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"function parameter '%s %s' is not an lvalue",
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mode, formal->name);
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return false;
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}
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} else {
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assert(formal->data.mode == ir_var_function_in ||
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formal->data.mode == ir_var_const_in);
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ir_variable *var = actual->variable_referenced();
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if (var) {
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if ((var->data.mode == ir_var_auto ||
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var->data.mode == ir_var_shader_out) &&
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!var->data.assigned &&
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!is_gl_identifier(var->name)) {
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_mesa_glsl_warning(&loc, state, "`%s' used uninitialized",
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var->name);
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}
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}
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}
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if (formal->type->is_image() &&
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actual->variable_referenced()) {
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if (!verify_image_parameter(&loc, state, formal,
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actual->variable_referenced()))
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return false;
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}
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actual_ir_node = actual_ir_node->next;
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actual_ast_node = actual_ast_node->next;
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}
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/* The first parameter of atomic functions must be a buffer variable */
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const char *func_name = sig->function_name();
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bool is_atomic = is_atomic_function(func_name);
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if (is_atomic) {
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const ir_rvalue *const actual =
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(ir_rvalue *) actual_ir_parameters.get_head_raw();
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const ast_expression *const actual_ast =
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exec_node_data(ast_expression,
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actual_ast_parameters.get_head_raw(), link);
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YYLTYPE loc = actual_ast->get_location();
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if (!verify_first_atomic_parameter(&loc, state,
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actual->variable_referenced())) {
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return false;
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}
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} else if (is_atomic_image_function(func_name)) {
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const ir_rvalue *const actual =
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(ir_rvalue *) actual_ir_parameters.get_head_raw();
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const ast_expression *const actual_ast =
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exec_node_data(ast_expression,
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actual_ast_parameters.get_head_raw(), link);
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YYLTYPE loc = actual_ast->get_location();
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if (!verify_atomic_image_parameter_qualifier(&loc, state,
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actual->variable_referenced())) {
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return false;
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}
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}
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return true;
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}
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struct copy_index_deref_data {
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void *mem_ctx;
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exec_list *before_instructions;
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};
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static void
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copy_index_derefs_to_temps(ir_instruction *ir, void *data)
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{
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struct copy_index_deref_data *d = (struct copy_index_deref_data *)data;
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if (ir->ir_type == ir_type_dereference_array) {
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ir_dereference_array *a = (ir_dereference_array *) ir;
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ir = a->array->as_dereference();
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ir_rvalue *idx = a->array_index;
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ir_variable *var = idx->variable_referenced();
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/* If the index is read only it cannot change so there is no need
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* to copy it.
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*/
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if (!var || var->data.read_only || var->data.memory_read_only)
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return;
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ir_variable *tmp = new(d->mem_ctx) ir_variable(idx->type, "idx_tmp",
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ir_var_temporary);
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d->before_instructions->push_tail(tmp);
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ir_dereference_variable *const deref_tmp_1 =
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new(d->mem_ctx) ir_dereference_variable(tmp);
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ir_assignment *const assignment =
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new(d->mem_ctx) ir_assignment(deref_tmp_1,
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idx->clone(d->mem_ctx, NULL));
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d->before_instructions->push_tail(assignment);
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|
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/* Replace the array index with a dereference of the new temporary */
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ir_dereference_variable *const deref_tmp_2 =
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new(d->mem_ctx) ir_dereference_variable(tmp);
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a->array_index = deref_tmp_2;
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}
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}
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|
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static void
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fix_parameter(void *mem_ctx, ir_rvalue *actual, const glsl_type *formal_type,
|
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exec_list *before_instructions, exec_list *after_instructions,
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bool parameter_is_inout)
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{
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ir_expression *const expr = actual->as_expression();
|
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|
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/* If the types match exactly and the parameter is not a vector-extract,
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* nothing needs to be done to fix the parameter.
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*/
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if (formal_type == actual->type
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&& (expr == NULL || expr->operation != ir_binop_vector_extract)
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&& actual->as_dereference_variable())
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return;
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|
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/* An array index could also be an out variable so we need to make a copy
|
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* of them before the function is called.
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*/
|
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if (!actual->as_dereference_variable()) {
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struct copy_index_deref_data data;
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data.mem_ctx = mem_ctx;
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data.before_instructions = before_instructions;
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visit_tree(actual, copy_index_derefs_to_temps, &data);
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}
|
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|
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/* To convert an out parameter, we need to create a temporary variable to
|
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* hold the value before conversion, and then perform the conversion after
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* the function call returns.
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|
*
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* This has the effect of transforming code like this:
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*
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* void f(out int x);
|
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* float value;
|
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* f(value);
|
|
*
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* Into IR that's equivalent to this:
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*
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* void f(out int x);
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* float value;
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* int out_parameter_conversion;
|
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* f(out_parameter_conversion);
|
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* value = float(out_parameter_conversion);
|
|
*
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* If the parameter is an ir_expression of ir_binop_vector_extract,
|
|
* additional conversion is needed in the post-call re-write.
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|
*/
|
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ir_variable *tmp =
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new(mem_ctx) ir_variable(formal_type, "inout_tmp", ir_var_temporary);
|
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|
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before_instructions->push_tail(tmp);
|
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|
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/* If the parameter is an inout parameter, copy the value of the actual
|
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* parameter to the new temporary. Note that no type conversion is allowed
|
|
* here because inout parameters must match types exactly.
|
|
*/
|
|
if (parameter_is_inout) {
|
|
/* Inout parameters should never require conversion, since that would
|
|
* require an implicit conversion to exist both to and from the formal
|
|
* parameter type, and there are no bidirectional implicit conversions.
|
|
*/
|
|
assert (actual->type == formal_type);
|
|
|
|
ir_dereference_variable *const deref_tmp_1 =
|
|
new(mem_ctx) ir_dereference_variable(tmp);
|
|
ir_assignment *const assignment =
|
|
new(mem_ctx) ir_assignment(deref_tmp_1, actual->clone(mem_ctx, NULL));
|
|
before_instructions->push_tail(assignment);
|
|
}
|
|
|
|
/* Replace the parameter in the call with a dereference of the new
|
|
* temporary.
|
|
*/
|
|
ir_dereference_variable *const deref_tmp_2 =
|
|
new(mem_ctx) ir_dereference_variable(tmp);
|
|
actual->replace_with(deref_tmp_2);
|
|
|
|
|
|
/* Copy the temporary variable to the actual parameter with optional
|
|
* type conversion applied.
|
|
*/
|
|
ir_rvalue *rhs = new(mem_ctx) ir_dereference_variable(tmp);
|
|
if (actual->type != formal_type)
|
|
rhs = convert_component(rhs, actual->type);
|
|
|
|
ir_rvalue *lhs = actual;
|
|
if (expr != NULL && expr->operation == ir_binop_vector_extract) {
|
|
lhs = new(mem_ctx) ir_dereference_array(expr->operands[0]->clone(mem_ctx,
|
|
NULL),
|
|
expr->operands[1]->clone(mem_ctx,
|
|
NULL));
|
|
}
|
|
|
|
ir_assignment *const assignment_2 = new(mem_ctx) ir_assignment(lhs, rhs);
|
|
after_instructions->push_tail(assignment_2);
|
|
}
|
|
|
|
/**
|
|
* Generate a function call.
|
|
*
|
|
* For non-void functions, this returns a dereference of the temporary
|
|
* variable which stores the return value for the call. For void functions,
|
|
* this returns NULL.
|
|
*/
|
|
static ir_rvalue *
|
|
generate_call(exec_list *instructions, ir_function_signature *sig,
|
|
exec_list *actual_parameters,
|
|
ir_variable *sub_var,
|
|
ir_rvalue *array_idx,
|
|
struct _mesa_glsl_parse_state *state)
|
|
{
|
|
void *ctx = state;
|
|
exec_list post_call_conversions;
|
|
|
|
/* Perform implicit conversion of arguments. For out parameters, we need
|
|
* to place them in a temporary variable and do the conversion after the
|
|
* call takes place. Since we haven't emitted the call yet, we'll place
|
|
* the post-call conversions in a temporary exec_list, and emit them later.
|
|
*/
|
|
foreach_two_lists(formal_node, &sig->parameters,
|
|
actual_node, actual_parameters) {
|
|
ir_rvalue *actual = (ir_rvalue *) actual_node;
|
|
ir_variable *formal = (ir_variable *) formal_node;
|
|
|
|
if (formal->type->is_numeric() || formal->type->is_boolean()) {
|
|
switch (formal->data.mode) {
|
|
case ir_var_const_in:
|
|
case ir_var_function_in: {
|
|
ir_rvalue *converted
|
|
= convert_component(actual, formal->type);
|
|
actual->replace_with(converted);
|
|
break;
|
|
}
|
|
case ir_var_function_out:
|
|
case ir_var_function_inout:
|
|
fix_parameter(ctx, actual, formal->type,
|
|
instructions, &post_call_conversions,
|
|
formal->data.mode == ir_var_function_inout);
|
|
break;
|
|
default:
|
|
assert (!"Illegal formal parameter mode");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Section 4.3.2 (Const) of the GLSL 1.10.59 spec says:
|
|
*
|
|
* "Initializers for const declarations must be formed from literal
|
|
* values, other const variables (not including function call
|
|
* paramaters), or expressions of these.
|
|
*
|
|
* Constructors may be used in such expressions, but function calls may
|
|
* not."
|
|
*
|
|
* Section 4.3.3 (Constant Expressions) of the GLSL 1.20.8 spec says:
|
|
*
|
|
* "A constant expression is one of
|
|
*
|
|
* ...
|
|
*
|
|
* - a built-in function call whose arguments are all constant
|
|
* expressions, with the exception of the texture lookup
|
|
* functions, the noise functions, and ftransform. The built-in
|
|
* functions dFdx, dFdy, and fwidth must return 0 when evaluated
|
|
* inside an initializer with an argument that is a constant
|
|
* expression."
|
|
*
|
|
* Section 5.10 (Constant Expressions) of the GLSL ES 1.00.17 spec says:
|
|
*
|
|
* "A constant expression is one of
|
|
*
|
|
* ...
|
|
*
|
|
* - a built-in function call whose arguments are all constant
|
|
* expressions, with the exception of the texture lookup
|
|
* functions."
|
|
*
|
|
* Section 4.3.3 (Constant Expressions) of the GLSL ES 3.00.4 spec says:
|
|
*
|
|
* "A constant expression is one of
|
|
*
|
|
* ...
|
|
*
|
|
* - a built-in function call whose arguments are all constant
|
|
* expressions, with the exception of the texture lookup
|
|
* functions. The built-in functions dFdx, dFdy, and fwidth must
|
|
* return 0 when evaluated inside an initializer with an argument
|
|
* that is a constant expression."
|
|
*
|
|
* If the function call is a constant expression, don't generate any
|
|
* instructions; just generate an ir_constant.
|
|
*/
|
|
if (state->is_version(120, 100) ||
|
|
state->consts->AllowGLSLBuiltinConstantExpression) {
|
|
ir_constant *value = sig->constant_expression_value(ctx,
|
|
actual_parameters,
|
|
NULL);
|
|
if (value != NULL) {
|
|
return value;
|
|
}
|
|
}
|
|
|
|
ir_dereference_variable *deref = NULL;
|
|
if (!sig->return_type->is_void()) {
|
|
/* Create a new temporary to hold the return value. */
|
|
char *const name = ir_variable::temporaries_allocate_names
|
|
? ralloc_asprintf(ctx, "%s_retval", sig->function_name())
|
|
: NULL;
|
|
|
|
ir_variable *var;
|
|
|
|
var = new(ctx) ir_variable(sig->return_type, name, ir_var_temporary);
|
|
instructions->push_tail(var);
|
|
|
|
ralloc_free(name);
|
|
|
|
deref = new(ctx) ir_dereference_variable(var);
|
|
}
|
|
|
|
ir_call *call = new(ctx) ir_call(sig, deref,
|
|
actual_parameters, sub_var, array_idx);
|
|
instructions->push_tail(call);
|
|
|
|
/* Also emit any necessary out-parameter conversions. */
|
|
instructions->append_list(&post_call_conversions);
|
|
|
|
return deref ? deref->clone(ctx, NULL) : NULL;
|
|
}
|
|
|
|
/**
|
|
* Given a function name and parameter list, find the matching signature.
|
|
*/
|
|
static ir_function_signature *
|
|
match_function_by_name(const char *name,
|
|
exec_list *actual_parameters,
|
|
struct _mesa_glsl_parse_state *state)
|
|
{
|
|
ir_function *f = state->symbols->get_function(name);
|
|
ir_function_signature *local_sig = NULL;
|
|
ir_function_signature *sig = NULL;
|
|
|
|
/* Is the function hidden by a record type constructor? */
|
|
if (state->symbols->get_type(name))
|
|
return sig; /* no match */
|
|
|
|
/* Is the function hidden by a variable (impossible in 1.10)? */
|
|
if (!state->symbols->separate_function_namespace
|
|
&& state->symbols->get_variable(name))
|
|
return sig; /* no match */
|
|
|
|
if (f != NULL) {
|
|
/* In desktop GL, the presence of a user-defined signature hides any
|
|
* built-in signatures, so we must ignore them. In contrast, in ES2
|
|
* user-defined signatures add new overloads, so we must consider them.
|
|
*/
|
|
bool allow_builtins = state->es_shader || !f->has_user_signature();
|
|
|
|
/* Look for a match in the local shader. If exact, we're done. */
|
|
bool is_exact = false;
|
|
sig = local_sig = f->matching_signature(state, actual_parameters,
|
|
allow_builtins, &is_exact);
|
|
if (is_exact)
|
|
return sig;
|
|
|
|
if (!allow_builtins)
|
|
return sig;
|
|
}
|
|
|
|
/* Local shader has no exact candidates; check the built-ins. */
|
|
sig = _mesa_glsl_find_builtin_function(state, name, actual_parameters);
|
|
|
|
/* if _mesa_glsl_find_builtin_function failed, fall back to the result
|
|
* of choose_best_inexact_overload() instead. This should only affect
|
|
* GLES.
|
|
*/
|
|
return sig ? sig : local_sig;
|
|
}
|
|
|
|
static ir_function_signature *
|
|
match_subroutine_by_name(const char *name,
|
|
exec_list *actual_parameters,
|
|
struct _mesa_glsl_parse_state *state,
|
|
ir_variable **var_r)
|
|
{
|
|
void *ctx = state;
|
|
ir_function_signature *sig = NULL;
|
|
ir_function *f, *found = NULL;
|
|
const char *new_name;
|
|
ir_variable *var;
|
|
bool is_exact = false;
|
|
|
|
new_name =
|
|
ralloc_asprintf(ctx, "%s_%s",
|
|
_mesa_shader_stage_to_subroutine_prefix(state->stage),
|
|
name);
|
|
var = state->symbols->get_variable(new_name);
|
|
if (!var)
|
|
return NULL;
|
|
|
|
for (int i = 0; i < state->num_subroutine_types; i++) {
|
|
f = state->subroutine_types[i];
|
|
if (strcmp(f->name, var->type->without_array()->name))
|
|
continue;
|
|
found = f;
|
|
break;
|
|
}
|
|
|
|
if (!found)
|
|
return NULL;
|
|
*var_r = var;
|
|
sig = found->matching_signature(state, actual_parameters,
|
|
false, &is_exact);
|
|
return sig;
|
|
}
|
|
|
|
static ir_rvalue *
|
|
generate_array_index(void *mem_ctx, exec_list *instructions,
|
|
struct _mesa_glsl_parse_state *state, YYLTYPE loc,
|
|
const ast_expression *array, ast_expression *idx,
|
|
const char **function_name, exec_list *actual_parameters)
|
|
{
|
|
if (array->oper == ast_array_index) {
|
|
/* This handles arrays of arrays */
|
|
ir_rvalue *outer_array = generate_array_index(mem_ctx, instructions,
|
|
state, loc,
|
|
array->subexpressions[0],
|
|
array->subexpressions[1],
|
|
function_name,
|
|
actual_parameters);
|
|
ir_rvalue *outer_array_idx = idx->hir(instructions, state);
|
|
|
|
YYLTYPE index_loc = idx->get_location();
|
|
return _mesa_ast_array_index_to_hir(mem_ctx, state, outer_array,
|
|
outer_array_idx, loc,
|
|
index_loc);
|
|
} else {
|
|
ir_variable *sub_var = NULL;
|
|
*function_name = array->primary_expression.identifier;
|
|
|
|
if (!match_subroutine_by_name(*function_name, actual_parameters,
|
|
state, &sub_var)) {
|
|
_mesa_glsl_error(&loc, state, "Unknown subroutine `%s'",
|
|
*function_name);
|
|
*function_name = NULL; /* indicate error condition to caller */
|
|
return NULL;
|
|
}
|
|
|
|
ir_rvalue *outer_array_idx = idx->hir(instructions, state);
|
|
return new(mem_ctx) ir_dereference_array(sub_var, outer_array_idx);
|
|
}
|
|
}
|
|
|
|
static bool
|
|
function_exists(_mesa_glsl_parse_state *state,
|
|
struct glsl_symbol_table *symbols, const char *name)
|
|
{
|
|
ir_function *f = symbols->get_function(name);
|
|
if (f != NULL) {
|
|
foreach_in_list(ir_function_signature, sig, &f->signatures) {
|
|
if (sig->is_builtin() && !sig->is_builtin_available(state))
|
|
continue;
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void
|
|
print_function_prototypes(_mesa_glsl_parse_state *state, YYLTYPE *loc,
|
|
ir_function *f)
|
|
{
|
|
if (f == NULL)
|
|
return;
|
|
|
|
foreach_in_list(ir_function_signature, sig, &f->signatures) {
|
|
if (sig->is_builtin() && !sig->is_builtin_available(state))
|
|
continue;
|
|
|
|
char *str = prototype_string(sig->return_type, f->name,
|
|
&sig->parameters);
|
|
_mesa_glsl_error(loc, state, " %s", str);
|
|
ralloc_free(str);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Raise a "no matching function" error, listing all possible overloads the
|
|
* compiler considered so developers can figure out what went wrong.
|
|
*/
|
|
static void
|
|
no_matching_function_error(const char *name,
|
|
YYLTYPE *loc,
|
|
exec_list *actual_parameters,
|
|
_mesa_glsl_parse_state *state)
|
|
{
|
|
gl_shader *sh = _mesa_glsl_get_builtin_function_shader();
|
|
|
|
if (!function_exists(state, state->symbols, name)
|
|
&& (!state->uses_builtin_functions
|
|
|| !function_exists(state, sh->symbols, name))) {
|
|
_mesa_glsl_error(loc, state, "no function with name '%s'", name);
|
|
} else {
|
|
char *str = prototype_string(NULL, name, actual_parameters);
|
|
_mesa_glsl_error(loc, state,
|
|
"no matching function for call to `%s';"
|
|
" candidates are:",
|
|
str);
|
|
ralloc_free(str);
|
|
|
|
print_function_prototypes(state, loc,
|
|
state->symbols->get_function(name));
|
|
|
|
if (state->uses_builtin_functions) {
|
|
print_function_prototypes(state, loc,
|
|
sh->symbols->get_function(name));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Perform automatic type conversion of constructor parameters
|
|
*
|
|
* This implements the rules in the "Conversion and Scalar Constructors"
|
|
* section (GLSL 1.10 section 5.4.1), not the "Implicit Conversions" rules.
|
|
*/
|
|
static ir_rvalue *
|
|
convert_component(ir_rvalue *src, const glsl_type *desired_type)
|
|
{
|
|
void *ctx = ralloc_parent(src);
|
|
const unsigned a = desired_type->base_type;
|
|
const unsigned b = src->type->base_type;
|
|
ir_expression *result = NULL;
|
|
|
|
if (src->type->is_error())
|
|
return src;
|
|
|
|
assert(a <= GLSL_TYPE_IMAGE);
|
|
assert(b <= GLSL_TYPE_IMAGE);
|
|
|
|
if (a == b)
|
|
return src;
|
|
|
|
switch (a) {
|
|
case GLSL_TYPE_UINT:
|
|
switch (b) {
|
|
case GLSL_TYPE_INT:
|
|
result = new(ctx) ir_expression(ir_unop_i2u, src);
|
|
break;
|
|
case GLSL_TYPE_FLOAT:
|
|
result = new(ctx) ir_expression(ir_unop_f2u, src);
|
|
break;
|
|
case GLSL_TYPE_BOOL:
|
|
result = new(ctx) ir_expression(ir_unop_i2u,
|
|
new(ctx) ir_expression(ir_unop_b2i,
|
|
src));
|
|
break;
|
|
case GLSL_TYPE_DOUBLE:
|
|
result = new(ctx) ir_expression(ir_unop_d2u, src);
|
|
break;
|
|
case GLSL_TYPE_UINT64:
|
|
result = new(ctx) ir_expression(ir_unop_u642u, src);
|
|
break;
|
|
case GLSL_TYPE_INT64:
|
|
result = new(ctx) ir_expression(ir_unop_i642u, src);
|
|
break;
|
|
case GLSL_TYPE_SAMPLER:
|
|
result = new(ctx) ir_expression(ir_unop_unpack_sampler_2x32, src);
|
|
break;
|
|
case GLSL_TYPE_IMAGE:
|
|
result = new(ctx) ir_expression(ir_unop_unpack_image_2x32, src);
|
|
break;
|
|
}
|
|
break;
|
|
case GLSL_TYPE_INT:
|
|
switch (b) {
|
|
case GLSL_TYPE_UINT:
|
|
result = new(ctx) ir_expression(ir_unop_u2i, src);
|
|
break;
|
|
case GLSL_TYPE_FLOAT:
|
|
result = new(ctx) ir_expression(ir_unop_f2i, src);
|
|
break;
|
|
case GLSL_TYPE_BOOL:
|
|
result = new(ctx) ir_expression(ir_unop_b2i, src);
|
|
break;
|
|
case GLSL_TYPE_DOUBLE:
|
|
result = new(ctx) ir_expression(ir_unop_d2i, src);
|
|
break;
|
|
case GLSL_TYPE_UINT64:
|
|
result = new(ctx) ir_expression(ir_unop_u642i, src);
|
|
break;
|
|
case GLSL_TYPE_INT64:
|
|
result = new(ctx) ir_expression(ir_unop_i642i, src);
|
|
break;
|
|
}
|
|
break;
|
|
case GLSL_TYPE_FLOAT:
|
|
switch (b) {
|
|
case GLSL_TYPE_UINT:
|
|
result = new(ctx) ir_expression(ir_unop_u2f, desired_type, src, NULL);
|
|
break;
|
|
case GLSL_TYPE_INT:
|
|
result = new(ctx) ir_expression(ir_unop_i2f, desired_type, src, NULL);
|
|
break;
|
|
case GLSL_TYPE_BOOL:
|
|
result = new(ctx) ir_expression(ir_unop_b2f, desired_type, src, NULL);
|
|
break;
|
|
case GLSL_TYPE_DOUBLE:
|
|
result = new(ctx) ir_expression(ir_unop_d2f, desired_type, src, NULL);
|
|
break;
|
|
case GLSL_TYPE_UINT64:
|
|
result = new(ctx) ir_expression(ir_unop_u642f, desired_type, src, NULL);
|
|
break;
|
|
case GLSL_TYPE_INT64:
|
|
result = new(ctx) ir_expression(ir_unop_i642f, desired_type, src, NULL);
|
|
break;
|
|
}
|
|
break;
|
|
case GLSL_TYPE_BOOL:
|
|
switch (b) {
|
|
case GLSL_TYPE_UINT:
|
|
result = new(ctx) ir_expression(ir_unop_i2b,
|
|
new(ctx) ir_expression(ir_unop_u2i,
|
|
src));
|
|
break;
|
|
case GLSL_TYPE_INT:
|
|
result = new(ctx) ir_expression(ir_unop_i2b, desired_type, src, NULL);
|
|
break;
|
|
case GLSL_TYPE_FLOAT:
|
|
result = new(ctx) ir_expression(ir_unop_f2b, desired_type, src, NULL);
|
|
break;
|
|
case GLSL_TYPE_DOUBLE:
|
|
result = new(ctx) ir_expression(ir_unop_d2b, desired_type, src, NULL);
|
|
break;
|
|
case GLSL_TYPE_UINT64:
|
|
result = new(ctx) ir_expression(ir_unop_i642b,
|
|
new(ctx) ir_expression(ir_unop_u642i64,
|
|
src));
|
|
break;
|
|
case GLSL_TYPE_INT64:
|
|
result = new(ctx) ir_expression(ir_unop_i642b, desired_type, src, NULL);
|
|
break;
|
|
}
|
|
break;
|
|
case GLSL_TYPE_DOUBLE:
|
|
switch (b) {
|
|
case GLSL_TYPE_INT:
|
|
result = new(ctx) ir_expression(ir_unop_i2d, src);
|
|
break;
|
|
case GLSL_TYPE_UINT:
|
|
result = new(ctx) ir_expression(ir_unop_u2d, src);
|
|
break;
|
|
case GLSL_TYPE_BOOL:
|
|
result = new(ctx) ir_expression(ir_unop_f2d,
|
|
new(ctx) ir_expression(ir_unop_b2f,
|
|
src));
|
|
break;
|
|
case GLSL_TYPE_FLOAT:
|
|
result = new(ctx) ir_expression(ir_unop_f2d, desired_type, src, NULL);
|
|
break;
|
|
case GLSL_TYPE_UINT64:
|
|
result = new(ctx) ir_expression(ir_unop_u642d, desired_type, src, NULL);
|
|
break;
|
|
case GLSL_TYPE_INT64:
|
|
result = new(ctx) ir_expression(ir_unop_i642d, desired_type, src, NULL);
|
|
break;
|
|
}
|
|
break;
|
|
case GLSL_TYPE_UINT64:
|
|
switch (b) {
|
|
case GLSL_TYPE_INT:
|
|
result = new(ctx) ir_expression(ir_unop_i2u64, src);
|
|
break;
|
|
case GLSL_TYPE_UINT:
|
|
result = new(ctx) ir_expression(ir_unop_u2u64, src);
|
|
break;
|
|
case GLSL_TYPE_BOOL:
|
|
result = new(ctx) ir_expression(ir_unop_i642u64,
|
|
new(ctx) ir_expression(ir_unop_b2i64,
|
|
src));
|
|
break;
|
|
case GLSL_TYPE_FLOAT:
|
|
result = new(ctx) ir_expression(ir_unop_f2u64, src);
|
|
break;
|
|
case GLSL_TYPE_DOUBLE:
|
|
result = new(ctx) ir_expression(ir_unop_d2u64, src);
|
|
break;
|
|
case GLSL_TYPE_INT64:
|
|
result = new(ctx) ir_expression(ir_unop_i642u64, src);
|
|
break;
|
|
}
|
|
break;
|
|
case GLSL_TYPE_INT64:
|
|
switch (b) {
|
|
case GLSL_TYPE_INT:
|
|
result = new(ctx) ir_expression(ir_unop_i2i64, src);
|
|
break;
|
|
case GLSL_TYPE_UINT:
|
|
result = new(ctx) ir_expression(ir_unop_u2i64, src);
|
|
break;
|
|
case GLSL_TYPE_BOOL:
|
|
result = new(ctx) ir_expression(ir_unop_b2i64, src);
|
|
break;
|
|
case GLSL_TYPE_FLOAT:
|
|
result = new(ctx) ir_expression(ir_unop_f2i64, src);
|
|
break;
|
|
case GLSL_TYPE_DOUBLE:
|
|
result = new(ctx) ir_expression(ir_unop_d2i64, src);
|
|
break;
|
|
case GLSL_TYPE_UINT64:
|
|
result = new(ctx) ir_expression(ir_unop_u642i64, src);
|
|
break;
|
|
}
|
|
break;
|
|
case GLSL_TYPE_SAMPLER:
|
|
switch (b) {
|
|
case GLSL_TYPE_UINT:
|
|
result = new(ctx)
|
|
ir_expression(ir_unop_pack_sampler_2x32, desired_type, src);
|
|
break;
|
|
}
|
|
break;
|
|
case GLSL_TYPE_IMAGE:
|
|
switch (b) {
|
|
case GLSL_TYPE_UINT:
|
|
result = new(ctx)
|
|
ir_expression(ir_unop_pack_image_2x32, desired_type, src);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
assert(result != NULL);
|
|
assert(result->type == desired_type);
|
|
|
|
/* Try constant folding; it may fold in the conversion we just added. */
|
|
ir_constant *const constant = result->constant_expression_value(ctx);
|
|
return (constant != NULL) ? (ir_rvalue *) constant : (ir_rvalue *) result;
|
|
}
|
|
|
|
|
|
/**
|
|
* Perform automatic type and constant conversion of constructor parameters
|
|
*
|
|
* This implements the rules in the "Implicit Conversions" rules, not the
|
|
* "Conversion and Scalar Constructors".
|
|
*
|
|
* After attempting the implicit conversion, an attempt to convert into a
|
|
* constant valued expression is also done.
|
|
*
|
|
* The \c from \c ir_rvalue is converted "in place".
|
|
*
|
|
* \param from Operand that is being converted
|
|
* \param to Base type the operand will be converted to
|
|
* \param state GLSL compiler state
|
|
*
|
|
* \return
|
|
* If the attempt to convert into a constant expression succeeds, \c true is
|
|
* returned. Otherwise \c false is returned.
|
|
*/
|
|
static bool
|
|
implicitly_convert_component(ir_rvalue * &from, const glsl_base_type to,
|
|
struct _mesa_glsl_parse_state *state)
|
|
{
|
|
void *mem_ctx = state;
|
|
ir_rvalue *result = from;
|
|
|
|
if (to != from->type->base_type) {
|
|
const glsl_type *desired_type =
|
|
glsl_type::get_instance(to,
|
|
from->type->vector_elements,
|
|
from->type->matrix_columns);
|
|
|
|
if (from->type->can_implicitly_convert_to(desired_type, state)) {
|
|
/* Even though convert_component() implements the constructor
|
|
* conversion rules (not the implicit conversion rules), its safe
|
|
* to use it here because we already checked that the implicit
|
|
* conversion is legal.
|
|
*/
|
|
result = convert_component(from, desired_type);
|
|
}
|
|
}
|
|
|
|
ir_rvalue *const constant = result->constant_expression_value(mem_ctx);
|
|
|
|
if (constant != NULL)
|
|
result = constant;
|
|
|
|
if (from != result) {
|
|
from->replace_with(result);
|
|
from = result;
|
|
}
|
|
|
|
return constant != NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* Dereference a specific component from a scalar, vector, or matrix
|
|
*/
|
|
static ir_rvalue *
|
|
dereference_component(ir_rvalue *src, unsigned component)
|
|
{
|
|
void *ctx = ralloc_parent(src);
|
|
assert(component < src->type->components());
|
|
|
|
/* If the source is a constant, just create a new constant instead of a
|
|
* dereference of the existing constant.
|
|
*/
|
|
ir_constant *constant = src->as_constant();
|
|
if (constant)
|
|
return new(ctx) ir_constant(constant, component);
|
|
|
|
if (src->type->is_scalar()) {
|
|
return src;
|
|
} else if (src->type->is_vector()) {
|
|
return new(ctx) ir_swizzle(src, component, 0, 0, 0, 1);
|
|
} else {
|
|
assert(src->type->is_matrix());
|
|
|
|
/* Dereference a row of the matrix, then call this function again to get
|
|
* a specific element from that row.
|
|
*/
|
|
const int c = component / src->type->column_type()->vector_elements;
|
|
const int r = component % src->type->column_type()->vector_elements;
|
|
ir_constant *const col_index = new(ctx) ir_constant(c);
|
|
ir_dereference *const col = new(ctx) ir_dereference_array(src,
|
|
col_index);
|
|
|
|
col->type = src->type->column_type();
|
|
|
|
return dereference_component(col, r);
|
|
}
|
|
|
|
assert(!"Should not get here.");
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static ir_rvalue *
|
|
process_vec_mat_constructor(exec_list *instructions,
|
|
const glsl_type *constructor_type,
|
|
YYLTYPE *loc, exec_list *parameters,
|
|
struct _mesa_glsl_parse_state *state)
|
|
{
|
|
void *ctx = state;
|
|
|
|
/* The ARB_shading_language_420pack spec says:
|
|
*
|
|
* "If an initializer is a list of initializers enclosed in curly braces,
|
|
* the variable being declared must be a vector, a matrix, an array, or a
|
|
* structure.
|
|
*
|
|
* int i = { 1 }; // illegal, i is not an aggregate"
|
|
*/
|
|
if (constructor_type->vector_elements <= 1) {
|
|
_mesa_glsl_error(loc, state, "aggregates can only initialize vectors, "
|
|
"matrices, arrays, and structs");
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
exec_list actual_parameters;
|
|
const unsigned parameter_count =
|
|
process_parameters(instructions, &actual_parameters, parameters, state);
|
|
|
|
if (parameter_count == 0
|
|
|| (constructor_type->is_vector() &&
|
|
constructor_type->vector_elements != parameter_count)
|
|
|| (constructor_type->is_matrix() &&
|
|
constructor_type->matrix_columns != parameter_count)) {
|
|
_mesa_glsl_error(loc, state, "%s constructor must have %u parameters",
|
|
constructor_type->is_vector() ? "vector" : "matrix",
|
|
constructor_type->vector_elements);
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
bool all_parameters_are_constant = true;
|
|
|
|
/* Type cast each parameter and, if possible, fold constants. */
|
|
foreach_in_list_safe(ir_rvalue, ir, &actual_parameters) {
|
|
/* Apply implicit conversions (not the scalar constructor rules, see the
|
|
* spec quote above!) and attempt to convert the parameter to a constant
|
|
* valued expression. After doing so, track whether or not all the
|
|
* parameters to the constructor are trivially constant valued
|
|
* expressions.
|
|
*/
|
|
all_parameters_are_constant &=
|
|
implicitly_convert_component(ir, constructor_type->base_type, state);
|
|
|
|
if (constructor_type->is_matrix()) {
|
|
if (ir->type != constructor_type->column_type()) {
|
|
_mesa_glsl_error(loc, state, "type error in matrix constructor: "
|
|
"expected: %s, found %s",
|
|
constructor_type->column_type()->name,
|
|
ir->type->name);
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
} else if (ir->type != constructor_type->get_scalar_type()) {
|
|
_mesa_glsl_error(loc, state, "type error in vector constructor: "
|
|
"expected: %s, found %s",
|
|
constructor_type->get_scalar_type()->name,
|
|
ir->type->name);
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
}
|
|
|
|
if (all_parameters_are_constant)
|
|
return new(ctx) ir_constant(constructor_type, &actual_parameters);
|
|
|
|
ir_variable *var = new(ctx) ir_variable(constructor_type, "vec_mat_ctor",
|
|
ir_var_temporary);
|
|
instructions->push_tail(var);
|
|
|
|
int i = 0;
|
|
|
|
foreach_in_list(ir_rvalue, rhs, &actual_parameters) {
|
|
ir_instruction *assignment = NULL;
|
|
|
|
if (var->type->is_matrix()) {
|
|
ir_rvalue *lhs =
|
|
new(ctx) ir_dereference_array(var, new(ctx) ir_constant(i));
|
|
assignment = new(ctx) ir_assignment(lhs, rhs);
|
|
} else {
|
|
/* use writemask rather than index for vector */
|
|
assert(var->type->is_vector());
|
|
assert(i < 4);
|
|
ir_dereference *lhs = new(ctx) ir_dereference_variable(var);
|
|
assignment = new(ctx) ir_assignment(lhs, rhs, NULL,
|
|
(unsigned)(1 << i));
|
|
}
|
|
|
|
instructions->push_tail(assignment);
|
|
|
|
i++;
|
|
}
|
|
|
|
return new(ctx) ir_dereference_variable(var);
|
|
}
|
|
|
|
|
|
static ir_rvalue *
|
|
process_array_constructor(exec_list *instructions,
|
|
const glsl_type *constructor_type,
|
|
YYLTYPE *loc, exec_list *parameters,
|
|
struct _mesa_glsl_parse_state *state)
|
|
{
|
|
void *ctx = state;
|
|
/* Array constructors come in two forms: sized and unsized. Sized array
|
|
* constructors look like 'vec4[2](a, b)', where 'a' and 'b' are vec4
|
|
* variables. In this case the number of parameters must exactly match the
|
|
* specified size of the array.
|
|
*
|
|
* Unsized array constructors look like 'vec4[](a, b)', where 'a' and 'b'
|
|
* are vec4 variables. In this case the size of the array being constructed
|
|
* is determined by the number of parameters.
|
|
*
|
|
* From page 52 (page 58 of the PDF) of the GLSL 1.50 spec:
|
|
*
|
|
* "There must be exactly the same number of arguments as the size of
|
|
* the array being constructed. If no size is present in the
|
|
* constructor, then the array is explicitly sized to the number of
|
|
* arguments provided. The arguments are assigned in order, starting at
|
|
* element 0, to the elements of the constructed array. Each argument
|
|
* must be the same type as the element type of the array, or be a type
|
|
* that can be converted to the element type of the array according to
|
|
* Section 4.1.10 "Implicit Conversions.""
|
|
*/
|
|
exec_list actual_parameters;
|
|
const unsigned parameter_count =
|
|
process_parameters(instructions, &actual_parameters, parameters, state);
|
|
bool is_unsized_array = constructor_type->is_unsized_array();
|
|
|
|
if ((parameter_count == 0) ||
|
|
(!is_unsized_array && (constructor_type->length != parameter_count))) {
|
|
const unsigned min_param = is_unsized_array
|
|
? 1 : constructor_type->length;
|
|
|
|
_mesa_glsl_error(loc, state, "array constructor must have %s %u "
|
|
"parameter%s",
|
|
is_unsized_array ? "at least" : "exactly",
|
|
min_param, (min_param <= 1) ? "" : "s");
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
if (is_unsized_array) {
|
|
constructor_type =
|
|
glsl_type::get_array_instance(constructor_type->fields.array,
|
|
parameter_count);
|
|
assert(constructor_type != NULL);
|
|
assert(constructor_type->length == parameter_count);
|
|
}
|
|
|
|
bool all_parameters_are_constant = true;
|
|
const glsl_type *element_type = constructor_type->fields.array;
|
|
|
|
/* Type cast each parameter and, if possible, fold constants. */
|
|
foreach_in_list_safe(ir_rvalue, ir, &actual_parameters) {
|
|
/* Apply implicit conversions (not the scalar constructor rules, see the
|
|
* spec quote above!) and attempt to convert the parameter to a constant
|
|
* valued expression. After doing so, track whether or not all the
|
|
* parameters to the constructor are trivially constant valued
|
|
* expressions.
|
|
*/
|
|
all_parameters_are_constant &=
|
|
implicitly_convert_component(ir, element_type->base_type, state);
|
|
|
|
if (constructor_type->fields.array->is_unsized_array()) {
|
|
/* As the inner parameters of the constructor are created without
|
|
* knowledge of each other we need to check to make sure unsized
|
|
* parameters of unsized constructors all end up with the same size.
|
|
*
|
|
* e.g we make sure to fail for a constructor like this:
|
|
* vec4[][] a = vec4[][](vec4[](vec4(0.0), vec4(1.0)),
|
|
* vec4[](vec4(0.0), vec4(1.0), vec4(1.0)),
|
|
* vec4[](vec4(0.0), vec4(1.0)));
|
|
*/
|
|
if (element_type->is_unsized_array()) {
|
|
/* This is the first parameter so just get the type */
|
|
element_type = ir->type;
|
|
} else if (element_type != ir->type) {
|
|
_mesa_glsl_error(loc, state, "type error in array constructor: "
|
|
"expected: %s, found %s",
|
|
element_type->name,
|
|
ir->type->name);
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
} else if (ir->type != constructor_type->fields.array) {
|
|
_mesa_glsl_error(loc, state, "type error in array constructor: "
|
|
"expected: %s, found %s",
|
|
constructor_type->fields.array->name,
|
|
ir->type->name);
|
|
return ir_rvalue::error_value(ctx);
|
|
} else {
|
|
element_type = ir->type;
|
|
}
|
|
}
|
|
|
|
if (constructor_type->fields.array->is_unsized_array()) {
|
|
constructor_type =
|
|
glsl_type::get_array_instance(element_type,
|
|
parameter_count);
|
|
assert(constructor_type != NULL);
|
|
assert(constructor_type->length == parameter_count);
|
|
}
|
|
|
|
if (all_parameters_are_constant)
|
|
return new(ctx) ir_constant(constructor_type, &actual_parameters);
|
|
|
|
ir_variable *var = new(ctx) ir_variable(constructor_type, "array_ctor",
|
|
ir_var_temporary);
|
|
instructions->push_tail(var);
|
|
|
|
int i = 0;
|
|
foreach_in_list(ir_rvalue, rhs, &actual_parameters) {
|
|
ir_rvalue *lhs = new(ctx) ir_dereference_array(var,
|
|
new(ctx) ir_constant(i));
|
|
|
|
ir_instruction *assignment = new(ctx) ir_assignment(lhs, rhs);
|
|
instructions->push_tail(assignment);
|
|
|
|
i++;
|
|
}
|
|
|
|
return new(ctx) ir_dereference_variable(var);
|
|
}
|
|
|
|
|
|
/**
|
|
* Determine if a list consists of a single scalar r-value
|
|
*/
|
|
static bool
|
|
single_scalar_parameter(exec_list *parameters)
|
|
{
|
|
const ir_rvalue *const p = (ir_rvalue *) parameters->get_head_raw();
|
|
assert(((ir_rvalue *)p)->as_rvalue() != NULL);
|
|
|
|
return (p->type->is_scalar() && p->next->is_tail_sentinel());
|
|
}
|
|
|
|
|
|
/**
|
|
* Generate inline code for a vector constructor
|
|
*
|
|
* The generated constructor code will consist of a temporary variable
|
|
* declaration of the same type as the constructor. A sequence of assignments
|
|
* from constructor parameters to the temporary will follow.
|
|
*
|
|
* \return
|
|
* An \c ir_dereference_variable of the temprorary generated in the constructor
|
|
* body.
|
|
*/
|
|
static ir_rvalue *
|
|
emit_inline_vector_constructor(const glsl_type *type,
|
|
exec_list *instructions,
|
|
exec_list *parameters,
|
|
void *ctx)
|
|
{
|
|
assert(!parameters->is_empty());
|
|
|
|
ir_variable *var = new(ctx) ir_variable(type, "vec_ctor", ir_var_temporary);
|
|
instructions->push_tail(var);
|
|
|
|
/* There are three kinds of vector constructors.
|
|
*
|
|
* - Construct a vector from a single scalar by replicating that scalar to
|
|
* all components of the vector.
|
|
*
|
|
* - Construct a vector from at least a matrix. This case should already
|
|
* have been taken care of in ast_function_expression::hir by breaking
|
|
* down the matrix into a series of column vectors.
|
|
*
|
|
* - Construct a vector from an arbirary combination of vectors and
|
|
* scalars. The components of the constructor parameters are assigned
|
|
* to the vector in order until the vector is full.
|
|
*/
|
|
const unsigned lhs_components = type->components();
|
|
if (single_scalar_parameter(parameters)) {
|
|
ir_rvalue *first_param = (ir_rvalue *)parameters->get_head_raw();
|
|
ir_rvalue *rhs = new(ctx) ir_swizzle(first_param, 0, 0, 0, 0,
|
|
lhs_components);
|
|
ir_dereference_variable *lhs = new(ctx) ir_dereference_variable(var);
|
|
const unsigned mask = (1U << lhs_components) - 1;
|
|
|
|
assert(rhs->type == lhs->type);
|
|
|
|
ir_instruction *inst = new(ctx) ir_assignment(lhs, rhs, NULL, mask);
|
|
instructions->push_tail(inst);
|
|
} else {
|
|
unsigned base_component = 0;
|
|
unsigned base_lhs_component = 0;
|
|
ir_constant_data data;
|
|
unsigned constant_mask = 0, constant_components = 0;
|
|
|
|
memset(&data, 0, sizeof(data));
|
|
|
|
foreach_in_list(ir_rvalue, param, parameters) {
|
|
unsigned rhs_components = param->type->components();
|
|
|
|
/* Do not try to assign more components to the vector than it has! */
|
|
if ((rhs_components + base_lhs_component) > lhs_components) {
|
|
rhs_components = lhs_components - base_lhs_component;
|
|
}
|
|
|
|
const ir_constant *const c = param->as_constant();
|
|
if (c != NULL) {
|
|
for (unsigned i = 0; i < rhs_components; i++) {
|
|
switch (c->type->base_type) {
|
|
case GLSL_TYPE_UINT:
|
|
data.u[i + base_component] = c->get_uint_component(i);
|
|
break;
|
|
case GLSL_TYPE_INT:
|
|
data.i[i + base_component] = c->get_int_component(i);
|
|
break;
|
|
case GLSL_TYPE_FLOAT:
|
|
data.f[i + base_component] = c->get_float_component(i);
|
|
break;
|
|
case GLSL_TYPE_DOUBLE:
|
|
data.d[i + base_component] = c->get_double_component(i);
|
|
break;
|
|
case GLSL_TYPE_BOOL:
|
|
data.b[i + base_component] = c->get_bool_component(i);
|
|
break;
|
|
case GLSL_TYPE_UINT64:
|
|
data.u64[i + base_component] = c->get_uint64_component(i);
|
|
break;
|
|
case GLSL_TYPE_INT64:
|
|
data.i64[i + base_component] = c->get_int64_component(i);
|
|
break;
|
|
default:
|
|
assert(!"Should not get here.");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Mask of fields to be written in the assignment. */
|
|
constant_mask |= ((1U << rhs_components) - 1) << base_lhs_component;
|
|
constant_components += rhs_components;
|
|
|
|
base_component += rhs_components;
|
|
}
|
|
/* Advance the component index by the number of components
|
|
* that were just assigned.
|
|
*/
|
|
base_lhs_component += rhs_components;
|
|
}
|
|
|
|
if (constant_mask != 0) {
|
|
ir_dereference *lhs = new(ctx) ir_dereference_variable(var);
|
|
const glsl_type *rhs_type =
|
|
glsl_type::get_instance(var->type->base_type,
|
|
constant_components,
|
|
1);
|
|
ir_rvalue *rhs = new(ctx) ir_constant(rhs_type, &data);
|
|
|
|
ir_instruction *inst =
|
|
new(ctx) ir_assignment(lhs, rhs, NULL, constant_mask);
|
|
instructions->push_tail(inst);
|
|
}
|
|
|
|
base_component = 0;
|
|
foreach_in_list(ir_rvalue, param, parameters) {
|
|
unsigned rhs_components = param->type->components();
|
|
|
|
/* Do not try to assign more components to the vector than it has! */
|
|
if ((rhs_components + base_component) > lhs_components) {
|
|
rhs_components = lhs_components - base_component;
|
|
}
|
|
|
|
/* If we do not have any components left to copy, break out of the
|
|
* loop. This can happen when initializing a vec4 with a mat3 as the
|
|
* mat3 would have been broken into a series of column vectors.
|
|
*/
|
|
if (rhs_components == 0) {
|
|
break;
|
|
}
|
|
|
|
const ir_constant *const c = param->as_constant();
|
|
if (c == NULL) {
|
|
/* Mask of fields to be written in the assignment. */
|
|
const unsigned write_mask = ((1U << rhs_components) - 1)
|
|
<< base_component;
|
|
|
|
ir_dereference *lhs = new(ctx) ir_dereference_variable(var);
|
|
|
|
/* Generate a swizzle so that LHS and RHS sizes match. */
|
|
ir_rvalue *rhs =
|
|
new(ctx) ir_swizzle(param, 0, 1, 2, 3, rhs_components);
|
|
|
|
ir_instruction *inst =
|
|
new(ctx) ir_assignment(lhs, rhs, NULL, write_mask);
|
|
instructions->push_tail(inst);
|
|
}
|
|
|
|
/* Advance the component index by the number of components that were
|
|
* just assigned.
|
|
*/
|
|
base_component += rhs_components;
|
|
}
|
|
}
|
|
return new(ctx) ir_dereference_variable(var);
|
|
}
|
|
|
|
|
|
/**
|
|
* Generate assignment of a portion of a vector to a portion of a matrix column
|
|
*
|
|
* \param src_base First component of the source to be used in assignment
|
|
* \param column Column of destination to be assiged
|
|
* \param row_base First component of the destination column to be assigned
|
|
* \param count Number of components to be assigned
|
|
*
|
|
* \note
|
|
* \c src_base + \c count must be less than or equal to the number of
|
|
* components in the source vector.
|
|
*/
|
|
static ir_instruction *
|
|
assign_to_matrix_column(ir_variable *var, unsigned column, unsigned row_base,
|
|
ir_rvalue *src, unsigned src_base, unsigned count,
|
|
void *mem_ctx)
|
|
{
|
|
ir_constant *col_idx = new(mem_ctx) ir_constant(column);
|
|
ir_dereference *column_ref = new(mem_ctx) ir_dereference_array(var,
|
|
col_idx);
|
|
|
|
assert(column_ref->type->components() >= (row_base + count));
|
|
assert(src->type->components() >= (src_base + count));
|
|
|
|
/* Generate a swizzle that extracts the number of components from the source
|
|
* that are to be assigned to the column of the matrix.
|
|
*/
|
|
if (count < src->type->vector_elements) {
|
|
src = new(mem_ctx) ir_swizzle(src,
|
|
src_base + 0, src_base + 1,
|
|
src_base + 2, src_base + 3,
|
|
count);
|
|
}
|
|
|
|
/* Mask of fields to be written in the assignment. */
|
|
const unsigned write_mask = ((1U << count) - 1) << row_base;
|
|
|
|
return new(mem_ctx) ir_assignment(column_ref, src, NULL, write_mask);
|
|
}
|
|
|
|
|
|
/**
|
|
* Generate inline code for a matrix constructor
|
|
*
|
|
* The generated constructor code will consist of a temporary variable
|
|
* declaration of the same type as the constructor. A sequence of assignments
|
|
* from constructor parameters to the temporary will follow.
|
|
*
|
|
* \return
|
|
* An \c ir_dereference_variable of the temprorary generated in the constructor
|
|
* body.
|
|
*/
|
|
static ir_rvalue *
|
|
emit_inline_matrix_constructor(const glsl_type *type,
|
|
exec_list *instructions,
|
|
exec_list *parameters,
|
|
void *ctx)
|
|
{
|
|
assert(!parameters->is_empty());
|
|
|
|
ir_variable *var = new(ctx) ir_variable(type, "mat_ctor", ir_var_temporary);
|
|
instructions->push_tail(var);
|
|
|
|
/* There are three kinds of matrix constructors.
|
|
*
|
|
* - Construct a matrix from a single scalar by replicating that scalar to
|
|
* along the diagonal of the matrix and setting all other components to
|
|
* zero.
|
|
*
|
|
* - Construct a matrix from an arbirary combination of vectors and
|
|
* scalars. The components of the constructor parameters are assigned
|
|
* to the matrix in column-major order until the matrix is full.
|
|
*
|
|
* - Construct a matrix from a single matrix. The source matrix is copied
|
|
* to the upper left portion of the constructed matrix, and the remaining
|
|
* elements take values from the identity matrix.
|
|
*/
|
|
ir_rvalue *const first_param = (ir_rvalue *) parameters->get_head_raw();
|
|
if (single_scalar_parameter(parameters)) {
|
|
/* Assign the scalar to the X component of a vec4, and fill the remaining
|
|
* components with zero.
|
|
*/
|
|
glsl_base_type param_base_type = first_param->type->base_type;
|
|
assert(first_param->type->is_float() || first_param->type->is_double());
|
|
ir_variable *rhs_var =
|
|
new(ctx) ir_variable(glsl_type::get_instance(param_base_type, 4, 1),
|
|
"mat_ctor_vec",
|
|
ir_var_temporary);
|
|
instructions->push_tail(rhs_var);
|
|
|
|
ir_constant_data zero;
|
|
for (unsigned i = 0; i < 4; i++)
|
|
if (first_param->type->is_float())
|
|
zero.f[i] = 0.0;
|
|
else
|
|
zero.d[i] = 0.0;
|
|
|
|
ir_instruction *inst =
|
|
new(ctx) ir_assignment(new(ctx) ir_dereference_variable(rhs_var),
|
|
new(ctx) ir_constant(rhs_var->type, &zero));
|
|
instructions->push_tail(inst);
|
|
|
|
ir_dereference *const rhs_ref =
|
|
new(ctx) ir_dereference_variable(rhs_var);
|
|
|
|
inst = new(ctx) ir_assignment(rhs_ref, first_param, NULL, 0x01);
|
|
instructions->push_tail(inst);
|
|
|
|
/* Assign the temporary vector to each column of the destination matrix
|
|
* with a swizzle that puts the X component on the diagonal of the
|
|
* matrix. In some cases this may mean that the X component does not
|
|
* get assigned into the column at all (i.e., when the matrix has more
|
|
* columns than rows).
|
|
*/
|
|
static const unsigned rhs_swiz[4][4] = {
|
|
{ 0, 1, 1, 1 },
|
|
{ 1, 0, 1, 1 },
|
|
{ 1, 1, 0, 1 },
|
|
{ 1, 1, 1, 0 }
|
|
};
|
|
|
|
const unsigned cols_to_init = MIN2(type->matrix_columns,
|
|
type->vector_elements);
|
|
for (unsigned i = 0; i < cols_to_init; i++) {
|
|
ir_constant *const col_idx = new(ctx) ir_constant(i);
|
|
ir_rvalue *const col_ref = new(ctx) ir_dereference_array(var,
|
|
col_idx);
|
|
|
|
ir_rvalue *const rhs_ref = new(ctx) ir_dereference_variable(rhs_var);
|
|
ir_rvalue *const rhs = new(ctx) ir_swizzle(rhs_ref, rhs_swiz[i],
|
|
type->vector_elements);
|
|
|
|
inst = new(ctx) ir_assignment(col_ref, rhs);
|
|
instructions->push_tail(inst);
|
|
}
|
|
|
|
for (unsigned i = cols_to_init; i < type->matrix_columns; i++) {
|
|
ir_constant *const col_idx = new(ctx) ir_constant(i);
|
|
ir_rvalue *const col_ref = new(ctx) ir_dereference_array(var,
|
|
col_idx);
|
|
|
|
ir_rvalue *const rhs_ref = new(ctx) ir_dereference_variable(rhs_var);
|
|
ir_rvalue *const rhs = new(ctx) ir_swizzle(rhs_ref, 1, 1, 1, 1,
|
|
type->vector_elements);
|
|
|
|
inst = new(ctx) ir_assignment(col_ref, rhs);
|
|
instructions->push_tail(inst);
|
|
}
|
|
} else if (first_param->type->is_matrix()) {
|
|
/* From page 50 (56 of the PDF) of the GLSL 1.50 spec:
|
|
*
|
|
* "If a matrix is constructed from a matrix, then each component
|
|
* (column i, row j) in the result that has a corresponding
|
|
* component (column i, row j) in the argument will be initialized
|
|
* from there. All other components will be initialized to the
|
|
* identity matrix. If a matrix argument is given to a matrix
|
|
* constructor, it is an error to have any other arguments."
|
|
*/
|
|
assert(first_param->next->is_tail_sentinel());
|
|
ir_rvalue *const src_matrix = first_param;
|
|
|
|
/* If the source matrix is smaller, pre-initialize the relavent parts of
|
|
* the destination matrix to the identity matrix.
|
|
*/
|
|
if ((src_matrix->type->matrix_columns < var->type->matrix_columns) ||
|
|
(src_matrix->type->vector_elements < var->type->vector_elements)) {
|
|
|
|
/* If the source matrix has fewer rows, every column of the
|
|
* destination must be initialized. Otherwise only the columns in
|
|
* the destination that do not exist in the source must be
|
|
* initialized.
|
|
*/
|
|
unsigned col =
|
|
(src_matrix->type->vector_elements < var->type->vector_elements)
|
|
? 0 : src_matrix->type->matrix_columns;
|
|
|
|
const glsl_type *const col_type = var->type->column_type();
|
|
for (/* empty */; col < var->type->matrix_columns; col++) {
|
|
ir_constant_data ident;
|
|
|
|
if (!col_type->is_double()) {
|
|
ident.f[0] = 0.0f;
|
|
ident.f[1] = 0.0f;
|
|
ident.f[2] = 0.0f;
|
|
ident.f[3] = 0.0f;
|
|
ident.f[col] = 1.0f;
|
|
} else {
|
|
ident.d[0] = 0.0;
|
|
ident.d[1] = 0.0;
|
|
ident.d[2] = 0.0;
|
|
ident.d[3] = 0.0;
|
|
ident.d[col] = 1.0;
|
|
}
|
|
|
|
ir_rvalue *const rhs = new(ctx) ir_constant(col_type, &ident);
|
|
|
|
ir_rvalue *const lhs =
|
|
new(ctx) ir_dereference_array(var, new(ctx) ir_constant(col));
|
|
|
|
ir_instruction *inst = new(ctx) ir_assignment(lhs, rhs);
|
|
instructions->push_tail(inst);
|
|
}
|
|
}
|
|
|
|
/* Assign columns from the source matrix to the destination matrix.
|
|
*
|
|
* Since the parameter will be used in the RHS of multiple assignments,
|
|
* generate a temporary and copy the paramter there.
|
|
*/
|
|
ir_variable *const rhs_var =
|
|
new(ctx) ir_variable(first_param->type, "mat_ctor_mat",
|
|
ir_var_temporary);
|
|
instructions->push_tail(rhs_var);
|
|
|
|
ir_dereference *const rhs_var_ref =
|
|
new(ctx) ir_dereference_variable(rhs_var);
|
|
ir_instruction *const inst =
|
|
new(ctx) ir_assignment(rhs_var_ref, first_param);
|
|
instructions->push_tail(inst);
|
|
|
|
const unsigned last_row = MIN2(src_matrix->type->vector_elements,
|
|
var->type->vector_elements);
|
|
const unsigned last_col = MIN2(src_matrix->type->matrix_columns,
|
|
var->type->matrix_columns);
|
|
|
|
unsigned swiz[4] = { 0, 0, 0, 0 };
|
|
for (unsigned i = 1; i < last_row; i++)
|
|
swiz[i] = i;
|
|
|
|
const unsigned write_mask = (1U << last_row) - 1;
|
|
|
|
for (unsigned i = 0; i < last_col; i++) {
|
|
ir_dereference *const lhs =
|
|
new(ctx) ir_dereference_array(var, new(ctx) ir_constant(i));
|
|
ir_rvalue *const rhs_col =
|
|
new(ctx) ir_dereference_array(rhs_var, new(ctx) ir_constant(i));
|
|
|
|
/* If one matrix has columns that are smaller than the columns of the
|
|
* other matrix, wrap the column access of the larger with a swizzle
|
|
* so that the LHS and RHS of the assignment have the same size (and
|
|
* therefore have the same type).
|
|
*
|
|
* It would be perfectly valid to unconditionally generate the
|
|
* swizzles, this this will typically result in a more compact IR
|
|
* tree.
|
|
*/
|
|
ir_rvalue *rhs;
|
|
if (lhs->type->vector_elements != rhs_col->type->vector_elements) {
|
|
rhs = new(ctx) ir_swizzle(rhs_col, swiz, last_row);
|
|
} else {
|
|
rhs = rhs_col;
|
|
}
|
|
|
|
ir_instruction *inst =
|
|
new(ctx) ir_assignment(lhs, rhs, NULL, write_mask);
|
|
instructions->push_tail(inst);
|
|
}
|
|
} else {
|
|
const unsigned cols = type->matrix_columns;
|
|
const unsigned rows = type->vector_elements;
|
|
unsigned remaining_slots = rows * cols;
|
|
unsigned col_idx = 0;
|
|
unsigned row_idx = 0;
|
|
|
|
foreach_in_list(ir_rvalue, rhs, parameters) {
|
|
unsigned rhs_components = rhs->type->components();
|
|
unsigned rhs_base = 0;
|
|
|
|
if (remaining_slots == 0)
|
|
break;
|
|
|
|
/* Since the parameter might be used in the RHS of two assignments,
|
|
* generate a temporary and copy the paramter there.
|
|
*/
|
|
ir_variable *rhs_var =
|
|
new(ctx) ir_variable(rhs->type, "mat_ctor_vec", ir_var_temporary);
|
|
instructions->push_tail(rhs_var);
|
|
|
|
ir_dereference *rhs_var_ref =
|
|
new(ctx) ir_dereference_variable(rhs_var);
|
|
ir_instruction *inst = new(ctx) ir_assignment(rhs_var_ref, rhs);
|
|
instructions->push_tail(inst);
|
|
|
|
do {
|
|
/* Assign the current parameter to as many components of the matrix
|
|
* as it will fill.
|
|
*
|
|
* NOTE: A single vector parameter can span two matrix columns. A
|
|
* single vec4, for example, can completely fill a mat2.
|
|
*/
|
|
unsigned count = MIN2(rows - row_idx,
|
|
rhs_components - rhs_base);
|
|
|
|
rhs_var_ref = new(ctx) ir_dereference_variable(rhs_var);
|
|
ir_instruction *inst = assign_to_matrix_column(var, col_idx,
|
|
row_idx,
|
|
rhs_var_ref,
|
|
rhs_base,
|
|
count, ctx);
|
|
instructions->push_tail(inst);
|
|
rhs_base += count;
|
|
row_idx += count;
|
|
remaining_slots -= count;
|
|
|
|
/* Sometimes, there is still data left in the parameters and
|
|
* components left to be set in the destination but in other
|
|
* column.
|
|
*/
|
|
if (row_idx >= rows) {
|
|
row_idx = 0;
|
|
col_idx++;
|
|
}
|
|
} while(remaining_slots > 0 && rhs_base < rhs_components);
|
|
}
|
|
}
|
|
|
|
return new(ctx) ir_dereference_variable(var);
|
|
}
|
|
|
|
|
|
static ir_rvalue *
|
|
emit_inline_record_constructor(const glsl_type *type,
|
|
exec_list *instructions,
|
|
exec_list *parameters,
|
|
void *mem_ctx)
|
|
{
|
|
ir_variable *const var =
|
|
new(mem_ctx) ir_variable(type, "record_ctor", ir_var_temporary);
|
|
ir_dereference_variable *const d =
|
|
new(mem_ctx) ir_dereference_variable(var);
|
|
|
|
instructions->push_tail(var);
|
|
|
|
exec_node *node = parameters->get_head_raw();
|
|
for (unsigned i = 0; i < type->length; i++) {
|
|
assert(!node->is_tail_sentinel());
|
|
|
|
ir_dereference *const lhs =
|
|
new(mem_ctx) ir_dereference_record(d->clone(mem_ctx, NULL),
|
|
type->fields.structure[i].name);
|
|
|
|
ir_rvalue *const rhs = ((ir_instruction *) node)->as_rvalue();
|
|
assert(rhs != NULL);
|
|
|
|
ir_instruction *const assign = new(mem_ctx) ir_assignment(lhs, rhs);
|
|
|
|
instructions->push_tail(assign);
|
|
node = node->next;
|
|
}
|
|
|
|
return d;
|
|
}
|
|
|
|
|
|
static ir_rvalue *
|
|
process_record_constructor(exec_list *instructions,
|
|
const glsl_type *constructor_type,
|
|
YYLTYPE *loc, exec_list *parameters,
|
|
struct _mesa_glsl_parse_state *state)
|
|
{
|
|
void *ctx = state;
|
|
/* From page 32 (page 38 of the PDF) of the GLSL 1.20 spec:
|
|
*
|
|
* "The arguments to the constructor will be used to set the structure's
|
|
* fields, in order, using one argument per field. Each argument must
|
|
* be the same type as the field it sets, or be a type that can be
|
|
* converted to the field's type according to Section 4.1.10 “Implicit
|
|
* Conversions.”"
|
|
*
|
|
* From page 35 (page 41 of the PDF) of the GLSL 4.20 spec:
|
|
*
|
|
* "In all cases, the innermost initializer (i.e., not a list of
|
|
* initializers enclosed in curly braces) applied to an object must
|
|
* have the same type as the object being initialized or be a type that
|
|
* can be converted to the object's type according to section 4.1.10
|
|
* "Implicit Conversions". In the latter case, an implicit conversion
|
|
* will be done on the initializer before the assignment is done."
|
|
*/
|
|
exec_list actual_parameters;
|
|
|
|
const unsigned parameter_count =
|
|
process_parameters(instructions, &actual_parameters, parameters,
|
|
state);
|
|
|
|
if (parameter_count != constructor_type->length) {
|
|
_mesa_glsl_error(loc, state,
|
|
"%s parameters in constructor for `%s'",
|
|
parameter_count > constructor_type->length
|
|
? "too many": "insufficient",
|
|
constructor_type->name);
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
bool all_parameters_are_constant = true;
|
|
|
|
int i = 0;
|
|
/* Type cast each parameter and, if possible, fold constants. */
|
|
foreach_in_list_safe(ir_rvalue, ir, &actual_parameters) {
|
|
|
|
const glsl_struct_field *struct_field =
|
|
&constructor_type->fields.structure[i];
|
|
|
|
/* Apply implicit conversions (not the scalar constructor rules, see the
|
|
* spec quote above!) and attempt to convert the parameter to a constant
|
|
* valued expression. After doing so, track whether or not all the
|
|
* parameters to the constructor are trivially constant valued
|
|
* expressions.
|
|
*/
|
|
all_parameters_are_constant &=
|
|
implicitly_convert_component(ir, struct_field->type->base_type,
|
|
state);
|
|
|
|
if (ir->type != struct_field->type) {
|
|
_mesa_glsl_error(loc, state,
|
|
"parameter type mismatch in constructor for `%s.%s' "
|
|
"(%s vs %s)",
|
|
constructor_type->name,
|
|
struct_field->name,
|
|
ir->type->name,
|
|
struct_field->type->name);
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
i++;
|
|
}
|
|
|
|
if (all_parameters_are_constant) {
|
|
return new(ctx) ir_constant(constructor_type, &actual_parameters);
|
|
} else {
|
|
return emit_inline_record_constructor(constructor_type, instructions,
|
|
&actual_parameters, state);
|
|
}
|
|
}
|
|
|
|
ir_rvalue *
|
|
ast_function_expression::handle_method(exec_list *instructions,
|
|
struct _mesa_glsl_parse_state *state)
|
|
{
|
|
const ast_expression *field = subexpressions[0];
|
|
ir_rvalue *op;
|
|
ir_rvalue *result;
|
|
void *ctx = state;
|
|
/* Handle "method calls" in GLSL 1.20 - namely, array.length() */
|
|
YYLTYPE loc = get_location();
|
|
state->check_version(120, 300, &loc, "methods not supported");
|
|
|
|
const char *method;
|
|
method = field->primary_expression.identifier;
|
|
|
|
/* This would prevent to raise "uninitialized variable" warnings when
|
|
* calling array.length.
|
|
*/
|
|
field->subexpressions[0]->set_is_lhs(true);
|
|
op = field->subexpressions[0]->hir(instructions, state);
|
|
if (strcmp(method, "length") == 0) {
|
|
if (!this->expressions.is_empty()) {
|
|
_mesa_glsl_error(&loc, state, "length method takes no arguments");
|
|
goto fail;
|
|
}
|
|
|
|
if (op->type->is_array()) {
|
|
if (op->type->is_unsized_array()) {
|
|
if (!state->has_shader_storage_buffer_objects()) {
|
|
_mesa_glsl_error(&loc, state,
|
|
"length called on unsized array"
|
|
" only available with"
|
|
" ARB_shader_storage_buffer_object");
|
|
goto fail;
|
|
} else if (op->variable_referenced()->is_in_shader_storage_block()) {
|
|
/* Calculate length of an unsized array in run-time */
|
|
result = new(ctx)
|
|
ir_expression(ir_unop_ssbo_unsized_array_length, op);
|
|
} else {
|
|
/* When actual size is known at link-time, this will be
|
|
* replaced with a constant expression.
|
|
*/
|
|
result = new (ctx)
|
|
ir_expression(ir_unop_implicitly_sized_array_length, op);
|
|
}
|
|
} else {
|
|
result = new(ctx) ir_constant(op->type->array_size());
|
|
}
|
|
} else if (op->type->is_vector()) {
|
|
if (state->has_420pack()) {
|
|
/* .length() returns int. */
|
|
result = new(ctx) ir_constant((int) op->type->vector_elements);
|
|
} else {
|
|
_mesa_glsl_error(&loc, state, "length method on matrix only"
|
|
" available with ARB_shading_language_420pack");
|
|
goto fail;
|
|
}
|
|
} else if (op->type->is_matrix()) {
|
|
if (state->has_420pack()) {
|
|
/* .length() returns int. */
|
|
result = new(ctx) ir_constant((int) op->type->matrix_columns);
|
|
} else {
|
|
_mesa_glsl_error(&loc, state, "length method on matrix only"
|
|
" available with ARB_shading_language_420pack");
|
|
goto fail;
|
|
}
|
|
} else {
|
|
_mesa_glsl_error(&loc, state, "length called on scalar.");
|
|
goto fail;
|
|
}
|
|
} else {
|
|
_mesa_glsl_error(&loc, state, "unknown method: `%s'", method);
|
|
goto fail;
|
|
}
|
|
return result;
|
|
fail:
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
static inline bool is_valid_constructor(const glsl_type *type,
|
|
struct _mesa_glsl_parse_state *state)
|
|
{
|
|
return type->is_numeric() || type->is_boolean() ||
|
|
(state->has_bindless() && (type->is_sampler() || type->is_image()));
|
|
}
|
|
|
|
ir_rvalue *
|
|
ast_function_expression::hir(exec_list *instructions,
|
|
struct _mesa_glsl_parse_state *state)
|
|
{
|
|
void *ctx = state;
|
|
/* There are three sorts of function calls.
|
|
*
|
|
* 1. constructors - The first subexpression is an ast_type_specifier.
|
|
* 2. methods - Only the .length() method of array types.
|
|
* 3. functions - Calls to regular old functions.
|
|
*
|
|
*/
|
|
if (is_constructor()) {
|
|
const ast_type_specifier *type =
|
|
(ast_type_specifier *) subexpressions[0];
|
|
YYLTYPE loc = type->get_location();
|
|
const char *name;
|
|
|
|
const glsl_type *const constructor_type = type->glsl_type(& name, state);
|
|
|
|
/* constructor_type can be NULL if a variable with the same name as the
|
|
* structure has come into scope.
|
|
*/
|
|
if (constructor_type == NULL) {
|
|
_mesa_glsl_error(& loc, state, "unknown type `%s' (structure name "
|
|
"may be shadowed by a variable with the same name)",
|
|
type->type_name);
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
|
|
/* Constructors for opaque types are illegal.
|
|
*
|
|
* From section 4.1.7 of the ARB_bindless_texture spec:
|
|
*
|
|
* "Samplers are represented using 64-bit integer handles, and may be "
|
|
* converted to and from 64-bit integers using constructors."
|
|
*
|
|
* From section 4.1.X of the ARB_bindless_texture spec:
|
|
*
|
|
* "Images are represented using 64-bit integer handles, and may be
|
|
* converted to and from 64-bit integers using constructors."
|
|
*/
|
|
if (constructor_type->contains_atomic() ||
|
|
(!state->has_bindless() && constructor_type->contains_opaque())) {
|
|
_mesa_glsl_error(& loc, state, "cannot construct %s type `%s'",
|
|
state->has_bindless() ? "atomic" : "opaque",
|
|
constructor_type->name);
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
if (constructor_type->is_subroutine()) {
|
|
_mesa_glsl_error(& loc, state,
|
|
"subroutine name cannot be a constructor `%s'",
|
|
constructor_type->name);
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
if (constructor_type->is_array()) {
|
|
if (!state->check_version(state->allow_glsl_120_subset_in_110 ? 110 : 120,
|
|
300, &loc, "array constructors forbidden")) {
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
return process_array_constructor(instructions, constructor_type,
|
|
& loc, &this->expressions, state);
|
|
}
|
|
|
|
|
|
/* There are two kinds of constructor calls. Constructors for arrays and
|
|
* structures must have the exact number of arguments with matching types
|
|
* in the correct order. These constructors follow essentially the same
|
|
* type matching rules as functions.
|
|
*
|
|
* Constructors for built-in language types, such as mat4 and vec2, are
|
|
* free form. The only requirements are that the parameters must provide
|
|
* enough values of the correct scalar type and that no arguments are
|
|
* given past the last used argument.
|
|
*
|
|
* When using the C-style initializer syntax from GLSL 4.20, constructors
|
|
* must have the exact number of arguments with matching types in the
|
|
* correct order.
|
|
*/
|
|
if (constructor_type->is_struct()) {
|
|
return process_record_constructor(instructions, constructor_type,
|
|
&loc, &this->expressions,
|
|
state);
|
|
}
|
|
|
|
if (!is_valid_constructor(constructor_type, state))
|
|
return ir_rvalue::error_value(ctx);
|
|
|
|
/* Total number of components of the type being constructed. */
|
|
const unsigned type_components = constructor_type->components();
|
|
|
|
/* Number of components from parameters that have actually been
|
|
* consumed. This is used to perform several kinds of error checking.
|
|
*/
|
|
unsigned components_used = 0;
|
|
|
|
unsigned matrix_parameters = 0;
|
|
unsigned nonmatrix_parameters = 0;
|
|
exec_list actual_parameters;
|
|
|
|
foreach_list_typed(ast_node, ast, link, &this->expressions) {
|
|
ir_rvalue *result = ast->hir(instructions, state);
|
|
|
|
/* From page 50 (page 56 of the PDF) of the GLSL 1.50 spec:
|
|
*
|
|
* "It is an error to provide extra arguments beyond this
|
|
* last used argument."
|
|
*/
|
|
if (components_used >= type_components) {
|
|
_mesa_glsl_error(& loc, state, "too many parameters to `%s' "
|
|
"constructor",
|
|
constructor_type->name);
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
if (!is_valid_constructor(result->type, state)) {
|
|
_mesa_glsl_error(& loc, state, "cannot construct `%s' from a "
|
|
"non-numeric data type",
|
|
constructor_type->name);
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
/* Count the number of matrix and nonmatrix parameters. This
|
|
* is used below to enforce some of the constructor rules.
|
|
*/
|
|
if (result->type->is_matrix())
|
|
matrix_parameters++;
|
|
else
|
|
nonmatrix_parameters++;
|
|
|
|
actual_parameters.push_tail(result);
|
|
components_used += result->type->components();
|
|
}
|
|
|
|
/* From page 28 (page 34 of the PDF) of the GLSL 1.10 spec:
|
|
*
|
|
* "It is an error to construct matrices from other matrices. This
|
|
* is reserved for future use."
|
|
*/
|
|
if (matrix_parameters > 0
|
|
&& constructor_type->is_matrix()
|
|
&& !state->check_version(120, 100, &loc,
|
|
"cannot construct `%s' from a matrix",
|
|
constructor_type->name)) {
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
/* From page 50 (page 56 of the PDF) of the GLSL 1.50 spec:
|
|
*
|
|
* "If a matrix argument is given to a matrix constructor, it is
|
|
* an error to have any other arguments."
|
|
*/
|
|
if ((matrix_parameters > 0)
|
|
&& ((matrix_parameters + nonmatrix_parameters) > 1)
|
|
&& constructor_type->is_matrix()) {
|
|
_mesa_glsl_error(& loc, state, "for matrix `%s' constructor, "
|
|
"matrix must be only parameter",
|
|
constructor_type->name);
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
/* From page 28 (page 34 of the PDF) of the GLSL 1.10 spec:
|
|
*
|
|
* "In these cases, there must be enough components provided in the
|
|
* arguments to provide an initializer for every component in the
|
|
* constructed value."
|
|
*/
|
|
if (components_used < type_components && components_used != 1
|
|
&& matrix_parameters == 0) {
|
|
_mesa_glsl_error(& loc, state, "too few components to construct "
|
|
"`%s'",
|
|
constructor_type->name);
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
/* Matrices can never be consumed as is by any constructor but matrix
|
|
* constructors. If the constructor type is not matrix, always break the
|
|
* matrix up into a series of column vectors.
|
|
*/
|
|
if (!constructor_type->is_matrix()) {
|
|
foreach_in_list_safe(ir_rvalue, matrix, &actual_parameters) {
|
|
if (!matrix->type->is_matrix())
|
|
continue;
|
|
|
|
/* Create a temporary containing the matrix. */
|
|
ir_variable *var = new(ctx) ir_variable(matrix->type, "matrix_tmp",
|
|
ir_var_temporary);
|
|
instructions->push_tail(var);
|
|
instructions->push_tail(
|
|
new(ctx) ir_assignment(new(ctx) ir_dereference_variable(var),
|
|
matrix));
|
|
var->constant_value = matrix->constant_expression_value(ctx);
|
|
|
|
/* Replace the matrix with dereferences of its columns. */
|
|
for (int i = 0; i < matrix->type->matrix_columns; i++) {
|
|
matrix->insert_before(
|
|
new (ctx) ir_dereference_array(var,
|
|
new(ctx) ir_constant(i)));
|
|
}
|
|
matrix->remove();
|
|
}
|
|
}
|
|
|
|
bool all_parameters_are_constant = true;
|
|
|
|
/* Type cast each parameter and, if possible, fold constants.*/
|
|
foreach_in_list_safe(ir_rvalue, ir, &actual_parameters) {
|
|
const glsl_type *desired_type;
|
|
|
|
/* From section 5.4.1 of the ARB_bindless_texture spec:
|
|
*
|
|
* "In the following four constructors, the low 32 bits of the sampler
|
|
* type correspond to the .x component of the uvec2 and the high 32
|
|
* bits correspond to the .y component."
|
|
*
|
|
* uvec2(any sampler type) // Converts a sampler type to a
|
|
* // pair of 32-bit unsigned integers
|
|
* any sampler type(uvec2) // Converts a pair of 32-bit unsigned integers to
|
|
* // a sampler type
|
|
* uvec2(any image type) // Converts an image type to a
|
|
* // pair of 32-bit unsigned integers
|
|
* any image type(uvec2) // Converts a pair of 32-bit unsigned integers to
|
|
* // an image type
|
|
*/
|
|
if (ir->type->is_sampler() || ir->type->is_image()) {
|
|
/* Convert a sampler/image type to a pair of 32-bit unsigned
|
|
* integers as defined by ARB_bindless_texture.
|
|
*/
|
|
if (constructor_type != glsl_type::uvec2_type) {
|
|
_mesa_glsl_error(&loc, state, "sampler and image types can only "
|
|
"be converted to a pair of 32-bit unsigned "
|
|
"integers");
|
|
}
|
|
desired_type = glsl_type::uvec2_type;
|
|
} else if (constructor_type->is_sampler() ||
|
|
constructor_type->is_image()) {
|
|
/* Convert a pair of 32-bit unsigned integers to a sampler or image
|
|
* type as defined by ARB_bindless_texture.
|
|
*/
|
|
if (ir->type != glsl_type::uvec2_type) {
|
|
_mesa_glsl_error(&loc, state, "sampler and image types can only "
|
|
"be converted from a pair of 32-bit unsigned "
|
|
"integers");
|
|
}
|
|
desired_type = constructor_type;
|
|
} else {
|
|
desired_type =
|
|
glsl_type::get_instance(constructor_type->base_type,
|
|
ir->type->vector_elements,
|
|
ir->type->matrix_columns);
|
|
}
|
|
|
|
ir_rvalue *result = convert_component(ir, desired_type);
|
|
|
|
/* Attempt to convert the parameter to a constant valued expression.
|
|
* After doing so, track whether or not all the parameters to the
|
|
* constructor are trivially constant valued expressions.
|
|
*/
|
|
ir_rvalue *const constant = result->constant_expression_value(ctx);
|
|
|
|
if (constant != NULL)
|
|
result = constant;
|
|
else
|
|
all_parameters_are_constant = false;
|
|
|
|
if (result != ir) {
|
|
ir->replace_with(result);
|
|
}
|
|
}
|
|
|
|
/* If all of the parameters are trivially constant, create a
|
|
* constant representing the complete collection of parameters.
|
|
*/
|
|
if (all_parameters_are_constant) {
|
|
return new(ctx) ir_constant(constructor_type, &actual_parameters);
|
|
} else if (constructor_type->is_scalar()) {
|
|
return dereference_component((ir_rvalue *)
|
|
actual_parameters.get_head_raw(),
|
|
0);
|
|
} else if (constructor_type->is_vector()) {
|
|
return emit_inline_vector_constructor(constructor_type,
|
|
instructions,
|
|
&actual_parameters,
|
|
ctx);
|
|
} else {
|
|
assert(constructor_type->is_matrix());
|
|
return emit_inline_matrix_constructor(constructor_type,
|
|
instructions,
|
|
&actual_parameters,
|
|
ctx);
|
|
}
|
|
} else if (subexpressions[0]->oper == ast_field_selection) {
|
|
return handle_method(instructions, state);
|
|
} else {
|
|
const ast_expression *id = subexpressions[0];
|
|
const char *func_name = NULL;
|
|
YYLTYPE loc = get_location();
|
|
exec_list actual_parameters;
|
|
ir_variable *sub_var = NULL;
|
|
ir_rvalue *array_idx = NULL;
|
|
|
|
process_parameters(instructions, &actual_parameters, &this->expressions,
|
|
state);
|
|
|
|
if (id->oper == ast_array_index) {
|
|
array_idx = generate_array_index(ctx, instructions, state, loc,
|
|
id->subexpressions[0],
|
|
id->subexpressions[1], &func_name,
|
|
&actual_parameters);
|
|
} else if (id->oper == ast_identifier) {
|
|
func_name = id->primary_expression.identifier;
|
|
} else {
|
|
_mesa_glsl_error(&loc, state, "function name is not an identifier");
|
|
}
|
|
|
|
/* an error was emitted earlier */
|
|
if (!func_name)
|
|
return ir_rvalue::error_value(ctx);
|
|
|
|
ir_function_signature *sig =
|
|
match_function_by_name(func_name, &actual_parameters, state);
|
|
|
|
ir_rvalue *value = NULL;
|
|
if (sig == NULL) {
|
|
sig = match_subroutine_by_name(func_name, &actual_parameters,
|
|
state, &sub_var);
|
|
}
|
|
|
|
if (sig == NULL) {
|
|
no_matching_function_error(func_name, &loc,
|
|
&actual_parameters, state);
|
|
value = ir_rvalue::error_value(ctx);
|
|
} else if (!verify_parameter_modes(state, sig,
|
|
actual_parameters,
|
|
this->expressions)) {
|
|
/* an error has already been emitted */
|
|
value = ir_rvalue::error_value(ctx);
|
|
} else if (sig->is_builtin() && strcmp(func_name, "ftransform") == 0) {
|
|
/* ftransform refers to global variables, and we don't have any code
|
|
* for remapping the variable references in the built-in shader.
|
|
*/
|
|
ir_variable *mvp =
|
|
state->symbols->get_variable("gl_ModelViewProjectionMatrix");
|
|
ir_variable *vtx = state->symbols->get_variable("gl_Vertex");
|
|
value = new(ctx) ir_expression(ir_binop_mul, glsl_type::vec4_type,
|
|
new(ctx) ir_dereference_variable(mvp),
|
|
new(ctx) ir_dereference_variable(vtx));
|
|
} else {
|
|
bool is_begin_interlock = false;
|
|
bool is_end_interlock = false;
|
|
if (sig->is_builtin() &&
|
|
state->stage == MESA_SHADER_FRAGMENT &&
|
|
state->ARB_fragment_shader_interlock_enable) {
|
|
is_begin_interlock = strcmp(func_name, "beginInvocationInterlockARB") == 0;
|
|
is_end_interlock = strcmp(func_name, "endInvocationInterlockARB") == 0;
|
|
}
|
|
|
|
if (sig->is_builtin() &&
|
|
((state->stage == MESA_SHADER_TESS_CTRL &&
|
|
strcmp(func_name, "barrier") == 0) ||
|
|
is_begin_interlock || is_end_interlock)) {
|
|
if (state->current_function == NULL ||
|
|
strcmp(state->current_function->function_name(), "main") != 0) {
|
|
_mesa_glsl_error(&loc, state,
|
|
"%s() may only be used in main()", func_name);
|
|
}
|
|
|
|
if (state->found_return) {
|
|
_mesa_glsl_error(&loc, state,
|
|
"%s() may not be used after return", func_name);
|
|
}
|
|
|
|
if (instructions != &state->current_function->body) {
|
|
_mesa_glsl_error(&loc, state,
|
|
"%s() may not be used in control flow", func_name);
|
|
}
|
|
}
|
|
|
|
/* There can be only one begin/end interlock pair in the function. */
|
|
if (is_begin_interlock) {
|
|
if (state->found_begin_interlock)
|
|
_mesa_glsl_error(&loc, state,
|
|
"beginInvocationInterlockARB may not be used twice");
|
|
state->found_begin_interlock = true;
|
|
} else if (is_end_interlock) {
|
|
if (!state->found_begin_interlock)
|
|
_mesa_glsl_error(&loc, state,
|
|
"endInvocationInterlockARB may not be used "
|
|
"before beginInvocationInterlockARB");
|
|
if (state->found_end_interlock)
|
|
_mesa_glsl_error(&loc, state,
|
|
"endInvocationInterlockARB may not be used twice");
|
|
state->found_end_interlock = true;
|
|
}
|
|
|
|
value = generate_call(instructions, sig, &actual_parameters, sub_var,
|
|
array_idx, state);
|
|
if (!value) {
|
|
ir_variable *const tmp = new(ctx) ir_variable(glsl_type::void_type,
|
|
"void_var",
|
|
ir_var_temporary);
|
|
instructions->push_tail(tmp);
|
|
value = new(ctx) ir_dereference_variable(tmp);
|
|
}
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
unreachable("not reached");
|
|
}
|
|
|
|
bool
|
|
ast_function_expression::has_sequence_subexpression() const
|
|
{
|
|
foreach_list_typed(const ast_node, ast, link, &this->expressions) {
|
|
if (ast->has_sequence_subexpression())
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
ir_rvalue *
|
|
ast_aggregate_initializer::hir(exec_list *instructions,
|
|
struct _mesa_glsl_parse_state *state)
|
|
{
|
|
void *ctx = state;
|
|
YYLTYPE loc = this->get_location();
|
|
|
|
if (!this->constructor_type) {
|
|
_mesa_glsl_error(&loc, state, "type of C-style initializer unknown");
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
const glsl_type *const constructor_type = this->constructor_type;
|
|
|
|
if (!state->has_420pack()) {
|
|
_mesa_glsl_error(&loc, state, "C-style initialization requires the "
|
|
"GL_ARB_shading_language_420pack extension");
|
|
return ir_rvalue::error_value(ctx);
|
|
}
|
|
|
|
if (constructor_type->is_array()) {
|
|
return process_array_constructor(instructions, constructor_type, &loc,
|
|
&this->expressions, state);
|
|
}
|
|
|
|
if (constructor_type->is_struct()) {
|
|
return process_record_constructor(instructions, constructor_type, &loc,
|
|
&this->expressions, state);
|
|
}
|
|
|
|
return process_vec_mat_constructor(instructions, constructor_type, &loc,
|
|
&this->expressions, state);
|
|
}
|