2010-03-15 20:04:13 +00:00
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/*
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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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2010-03-19 18:57:24 +00:00
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#include "glsl_symbol_table.h"
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2010-03-15 20:04:13 +00:00
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#include "ast.h"
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#include "glsl_types.h"
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#include "ir.h"
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2010-08-23 10:51:42 +01:00
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#include "main/core.h" /* for MIN2 */
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2010-06-26 00:10:43 +01:00
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2010-07-14 21:22:07 +01:00
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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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2010-04-01 00:28:51 +01:00
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static unsigned
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process_parameters(exec_list *instructions, exec_list *actual_parameters,
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2010-05-10 19:17:53 +01:00
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exec_list *parameters,
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2010-04-01 00:28:51 +01:00
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struct _mesa_glsl_parse_state *state)
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2010-03-15 20:26:02 +00:00
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{
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2010-04-01 00:28:51 +01:00
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unsigned count = 0;
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2010-05-10 19:17:53 +01:00
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foreach_list (n, parameters) {
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ast_node *const ast = exec_node_data(ast_node, n, link);
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2010-06-10 01:31:02 +01:00
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ir_rvalue *result = ast->hir(instructions, state);
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ir_constant *const constant = result->constant_expression_value();
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if (constant != NULL)
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result = constant;
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2010-03-15 20:26:02 +00:00
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2010-05-10 18:47:14 +01:00
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actual_parameters->push_tail(result);
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count++;
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2010-03-15 20:26:02 +00:00
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}
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2010-04-01 00:28:51 +01:00
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return count;
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}
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2010-08-06 01:21:39 +01:00
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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 Parameter list for the function. This may be either a
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* formal or actual parameter list. Only the type is used.
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*
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* \return
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* A talloced 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 = talloc_asprintf(str, "%s ", return_type->name);
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str = talloc_asprintf_append(str, "%s(", name);
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const char *comma = "";
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foreach_list(node, parameters) {
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const ir_instruction *const param = (ir_instruction *) node;
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str = talloc_asprintf_append(str, "%s%s", comma, param->type->name);
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comma = ", ";
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}
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str = talloc_strdup_append(str, ")");
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return str;
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}
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2010-04-01 00:28:51 +01:00
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static ir_rvalue *
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process_call(exec_list *instructions, ir_function *f,
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YYLTYPE *loc, exec_list *actual_parameters,
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struct _mesa_glsl_parse_state *state)
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{
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2010-06-25 21:14:37 +01:00
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void *ctx = state;
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2010-06-24 02:11:51 +01:00
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2010-07-19 01:45:16 +01:00
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ir_function_signature *sig = f->matching_signature(actual_parameters);
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2010-04-01 00:28:51 +01:00
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/* The instructions param will be used when the FINISHMEs below are done */
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(void) instructions;
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2010-03-15 20:26:02 +00:00
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if (sig != NULL) {
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2010-04-02 23:51:02 +01:00
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/* Verify that 'out' and 'inout' actual parameters are lvalues. This
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* isn't done in ir_function::matching_signature because that function
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* cannot generate the necessary diagnostics.
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*/
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exec_list_iterator actual_iter = actual_parameters->iterator();
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exec_list_iterator formal_iter = sig->parameters.iterator();
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while (actual_iter.has_next()) {
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2010-04-07 20:35:34 +01:00
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ir_rvalue *actual = (ir_rvalue *) actual_iter.get();
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ir_variable *formal = (ir_variable *) formal_iter.get();
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2010-04-02 23:51:02 +01:00
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assert(actual != NULL);
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assert(formal != NULL);
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if ((formal->mode == ir_var_out)
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|| (formal->mode == ir_var_inout)) {
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if (! actual->is_lvalue()) {
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/* FINISHME: Log a better diagnostic here. There is no way
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* FINISHME: to tell the user which parameter is invalid.
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*/
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_mesa_glsl_error(loc, state, "`%s' parameter is not lvalue",
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(formal->mode == ir_var_out) ? "out" : "inout");
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}
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}
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2010-07-14 21:22:07 +01:00
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if (formal->type->is_numeric() || formal->type->is_boolean()) {
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ir_rvalue *converted = convert_component(actual, formal->type);
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actual->replace_with(converted);
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}
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2010-04-02 23:51:02 +01:00
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actual_iter.next();
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formal_iter.next();
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}
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2010-07-20 23:50:48 +01:00
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/* Always insert the call in the instruction stream, and return a deref
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* of its return val if it returns a value, since we don't know if
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* the rvalue is going to be assigned to anything or not.
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*/
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ir_call *call = new(ctx) ir_call(sig, actual_parameters);
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if (!sig->return_type->is_void()) {
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ir_variable *var;
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ir_dereference_variable *deref;
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var = new(ctx) ir_variable(sig->return_type,
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talloc_asprintf(ctx, "%s_retval",
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2010-07-20 01:12:42 +01:00
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sig->function_name()),
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ir_var_temporary);
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2010-07-20 23:50:48 +01:00
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instructions->push_tail(var);
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deref = new(ctx) ir_dereference_variable(var);
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ir_assignment *assign = new(ctx) ir_assignment(deref, call, NULL);
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instructions->push_tail(assign);
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2010-07-23 02:29:29 +01:00
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if (state->language_version >= 120)
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var->constant_value = call->constant_expression_value();
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2010-07-20 23:50:48 +01:00
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deref = new(ctx) ir_dereference_variable(var);
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return deref;
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} else {
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instructions->push_tail(call);
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return NULL;
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}
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2010-03-15 20:26:02 +00:00
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} else {
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2010-08-06 01:21:39 +01:00
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char *str = prototype_string(NULL, f->name, actual_parameters);
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2010-03-15 20:26:02 +00:00
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_mesa_glsl_error(loc, state, "no matching function for call to `%s'",
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2010-08-06 01:21:39 +01:00
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str);
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talloc_free(str);
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const char *prefix = "candidates are: ";
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foreach_list (node, &f->signatures) {
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ir_function_signature *sig = (ir_function_signature *) node;
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str = prototype_string(sig->return_type, f->name, &sig->parameters);
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_mesa_glsl_error(loc, state, "%s%s\n", prefix, str);
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talloc_free(str);
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prefix = " ";
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}
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2010-06-24 02:25:04 +01:00
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return ir_call::get_error_instruction(ctx);
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2010-04-01 00:28:51 +01:00
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}
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}
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static ir_rvalue *
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match_function_by_name(exec_list *instructions, const char *name,
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2010-06-10 01:23:26 +01:00
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YYLTYPE *loc, exec_list *actual_parameters,
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2010-04-01 00:28:51 +01:00
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struct _mesa_glsl_parse_state *state)
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{
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2010-06-25 21:14:37 +01:00
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void *ctx = state;
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2010-04-01 00:28:51 +01:00
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ir_function *f = state->symbols->get_function(name);
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if (f == NULL) {
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_mesa_glsl_error(loc, state, "function `%s' undeclared", name);
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2010-06-24 02:25:04 +01:00
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return ir_call::get_error_instruction(ctx);
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2010-03-15 20:26:02 +00:00
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}
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2010-04-01 00:28:51 +01:00
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2010-06-10 01:23:26 +01:00
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/* Once we've determined that the function being called might exist, try
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* to find an overload of the function that matches the parameters.
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2010-04-01 00:28:51 +01:00
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*/
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2010-06-10 01:23:26 +01:00
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return process_call(instructions, f, loc, actual_parameters, state);
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2010-03-15 20:26:02 +00:00
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}
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2010-03-27 00:38:58 +00:00
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/**
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* Perform automatic type conversion of constructor parameters
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2010-07-20 07:45:23 +01:00
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*
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* This implements the rules in the "Conversion and Scalar Constructors"
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* section (GLSL 1.10 section 5.4.1), not the "Implicit Conversions" rules.
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2010-03-27 00:38:58 +00:00
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*/
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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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{
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2010-06-24 02:11:51 +01:00
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void *ctx = talloc_parent(src);
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2010-03-27 00:38:58 +00:00
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const unsigned a = desired_type->base_type;
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const unsigned b = src->type->base_type;
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2010-06-07 23:08:04 +01:00
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ir_expression *result = NULL;
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2010-03-27 00:38:58 +00:00
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if (src->type->is_error())
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return src;
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assert(a <= GLSL_TYPE_BOOL);
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assert(b <= GLSL_TYPE_BOOL);
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if ((a == b) || (src->type->is_integer() && desired_type->is_integer()))
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return src;
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switch (a) {
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case GLSL_TYPE_UINT:
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case GLSL_TYPE_INT:
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if (b == GLSL_TYPE_FLOAT)
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2010-06-24 02:11:51 +01:00
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result = new(ctx) ir_expression(ir_unop_f2i, desired_type, src, NULL);
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2010-03-27 00:38:58 +00:00
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else {
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assert(b == GLSL_TYPE_BOOL);
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2010-06-24 02:11:51 +01:00
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result = new(ctx) ir_expression(ir_unop_b2i, desired_type, src, NULL);
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2010-03-27 00:38:58 +00:00
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}
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2010-06-11 21:49:00 +01:00
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break;
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2010-03-27 00:38:58 +00:00
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case GLSL_TYPE_FLOAT:
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switch (b) {
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case GLSL_TYPE_UINT:
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2010-06-24 02:11:51 +01:00
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result = new(ctx) ir_expression(ir_unop_u2f, desired_type, src, NULL);
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2010-06-07 23:08:04 +01:00
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break;
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2010-03-27 00:38:58 +00:00
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case GLSL_TYPE_INT:
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2010-06-24 02:11:51 +01:00
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result = new(ctx) ir_expression(ir_unop_i2f, desired_type, src, NULL);
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2010-06-07 23:08:04 +01:00
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break;
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2010-03-27 00:38:58 +00:00
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case GLSL_TYPE_BOOL:
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2010-06-24 02:11:51 +01:00
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result = new(ctx) ir_expression(ir_unop_b2f, desired_type, src, NULL);
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2010-06-07 23:08:04 +01:00
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break;
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2010-03-27 00:38:58 +00:00
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}
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break;
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2010-06-26 00:19:45 +01:00
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case GLSL_TYPE_BOOL:
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2010-06-12 00:52:09 +01:00
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switch (b) {
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2010-06-26 00:19:45 +01:00
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case GLSL_TYPE_UINT:
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case GLSL_TYPE_INT:
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result = new(ctx) ir_expression(ir_unop_i2b, desired_type, src, NULL);
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break;
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case GLSL_TYPE_FLOAT:
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result = new(ctx) ir_expression(ir_unop_f2b, desired_type, src, NULL);
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break;
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2010-06-12 00:52:09 +01:00
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}
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2010-06-26 00:19:45 +01:00
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break;
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2010-03-27 00:38:58 +00:00
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}
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2010-06-07 23:08:04 +01:00
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assert(result != NULL);
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2010-07-20 07:45:23 +01:00
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/* Try constant folding; it may fold in the conversion we just added. */
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2010-06-07 23:08:04 +01:00
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ir_constant *const constant = result->constant_expression_value();
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return (constant != NULL) ? (ir_rvalue *) constant : (ir_rvalue *) result;
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2010-03-27 00:38:58 +00:00
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}
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/**
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* Dereference a specific component from a scalar, vector, or matrix
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*/
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static ir_rvalue *
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dereference_component(ir_rvalue *src, unsigned component)
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{
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2010-06-24 02:11:51 +01:00
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void *ctx = talloc_parent(src);
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2010-03-27 00:38:58 +00:00
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assert(component < src->type->components());
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2010-06-05 00:20:35 +01:00
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/* If the source is a constant, just create a new constant instead of a
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* dereference of the existing constant.
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*/
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ir_constant *constant = src->as_constant();
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if (constant)
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2010-06-24 02:11:51 +01:00
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return new(ctx) ir_constant(constant, component);
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2010-06-05 00:20:35 +01:00
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2010-03-27 00:38:58 +00:00
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if (src->type->is_scalar()) {
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return src;
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} else if (src->type->is_vector()) {
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2010-06-24 02:11:51 +01:00
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return new(ctx) ir_swizzle(src, component, 0, 0, 0, 1);
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2010-03-27 00:38:58 +00:00
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} else {
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assert(src->type->is_matrix());
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/* Dereference a row of the matrix, then call this function again to get
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* a specific element from that row.
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*/
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const int c = component / src->type->column_type()->vector_elements;
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const int r = component % src->type->column_type()->vector_elements;
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2010-06-24 02:11:51 +01:00
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ir_constant *const col_index = new(ctx) ir_constant(c);
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ir_dereference *const col = new(ctx) ir_dereference_array(src, col_index);
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2010-03-27 00:38:58 +00:00
|
|
|
|
|
|
|
col->type = src->type->column_type();
|
|
|
|
|
|
|
|
return dereference_component(col, r);
|
|
|
|
}
|
|
|
|
|
|
|
|
assert(!"Should not get here.");
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-04-01 00:48:48 +01:00
|
|
|
static ir_rvalue *
|
|
|
|
process_array_constructor(exec_list *instructions,
|
|
|
|
const glsl_type *constructor_type,
|
2010-05-10 19:17:53 +01:00
|
|
|
YYLTYPE *loc, exec_list *parameters,
|
2010-04-01 00:48:48 +01:00
|
|
|
struct _mesa_glsl_parse_state *state)
|
|
|
|
{
|
2010-06-25 21:14:37 +01:00
|
|
|
void *ctx = state;
|
2010-04-01 00:48:48 +01:00
|
|
|
/* 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);
|
|
|
|
|
|
|
|
if ((parameter_count == 0)
|
|
|
|
|| ((constructor_type->length != 0)
|
|
|
|
&& (constructor_type->length != parameter_count))) {
|
|
|
|
const unsigned min_param = (constructor_type->length == 0)
|
|
|
|
? 1 : constructor_type->length;
|
|
|
|
|
|
|
|
_mesa_glsl_error(loc, state, "array constructor must have %s %u "
|
|
|
|
"parameter%s",
|
|
|
|
(constructor_type->length != 0) ? "at least" : "exactly",
|
|
|
|
min_param, (min_param <= 1) ? "" : "s");
|
2010-06-24 02:25:04 +01:00
|
|
|
return ir_call::get_error_instruction(ctx);
|
2010-04-01 00:48:48 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
if (constructor_type->length == 0) {
|
|
|
|
constructor_type =
|
2010-07-20 23:33:40 +01:00
|
|
|
glsl_type::get_array_instance(constructor_type->element_type(),
|
2010-04-01 00:48:48 +01:00
|
|
|
parameter_count);
|
|
|
|
assert(constructor_type != NULL);
|
|
|
|
assert(constructor_type->length == parameter_count);
|
|
|
|
}
|
|
|
|
|
2010-07-20 07:49:58 +01:00
|
|
|
bool all_parameters_are_constant = true;
|
2010-04-01 00:48:48 +01:00
|
|
|
|
2010-07-20 07:49:58 +01:00
|
|
|
/* Type cast each parameter and, if possible, fold constants. */
|
|
|
|
foreach_list_safe(n, &actual_parameters) {
|
|
|
|
ir_rvalue *ir = (ir_rvalue *) n;
|
|
|
|
ir_rvalue *result = ir;
|
|
|
|
|
|
|
|
/* Apply implicit conversions (not the scalar constructor rules!) */
|
|
|
|
if (constructor_type->element_type()->is_float()) {
|
|
|
|
const glsl_type *desired_type =
|
|
|
|
glsl_type::get_instance(GLSL_TYPE_FLOAT,
|
|
|
|
ir->type->vector_elements,
|
|
|
|
ir->type->matrix_columns);
|
|
|
|
result = convert_component(ir, desired_type);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (result->type != constructor_type->element_type()) {
|
|
|
|
_mesa_glsl_error(loc, state, "type error in array constructor: "
|
|
|
|
"expected: %s, found %s",
|
|
|
|
constructor_type->element_type()->name,
|
|
|
|
result->type->name);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* 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();
|
|
|
|
|
|
|
|
if (constant != NULL)
|
|
|
|
result = constant;
|
|
|
|
else
|
|
|
|
all_parameters_are_constant = false;
|
|
|
|
|
|
|
|
ir->replace_with(result);
|
|
|
|
}
|
|
|
|
|
2010-07-20 09:06:33 +01:00
|
|
|
if (all_parameters_are_constant)
|
|
|
|
return new(ctx) ir_constant(constructor_type, &actual_parameters);
|
2010-04-01 00:48:48 +01:00
|
|
|
|
2010-07-20 07:49:58 +01:00
|
|
|
ir_variable *var = new(ctx) ir_variable(constructor_type, "array_ctor",
|
|
|
|
ir_var_temporary);
|
|
|
|
instructions->push_tail(var);
|
|
|
|
|
|
|
|
int i = 0;
|
|
|
|
foreach_list(node, &actual_parameters) {
|
|
|
|
ir_rvalue *rhs = (ir_rvalue *) node;
|
|
|
|
ir_rvalue *lhs = new(ctx) ir_dereference_array(var,
|
|
|
|
new(ctx) ir_constant(i));
|
2010-04-01 00:48:48 +01:00
|
|
|
|
2010-07-20 07:49:58 +01:00
|
|
|
ir_instruction *assignment = new(ctx) ir_assignment(lhs, rhs, NULL);
|
|
|
|
instructions->push_tail(assignment);
|
|
|
|
|
|
|
|
i++;
|
|
|
|
}
|
2010-04-01 00:48:48 +01:00
|
|
|
|
2010-07-20 07:49:58 +01:00
|
|
|
return new(ctx) ir_dereference_variable(var);
|
2010-04-01 00:48:48 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-06-10 01:26:20 +01:00
|
|
|
/**
|
|
|
|
* Try to convert a record constructor to a constant expression
|
|
|
|
*/
|
|
|
|
static ir_constant *
|
|
|
|
constant_record_constructor(const glsl_type *constructor_type,
|
|
|
|
YYLTYPE *loc, exec_list *parameters,
|
|
|
|
struct _mesa_glsl_parse_state *state)
|
|
|
|
{
|
2010-06-25 21:14:37 +01:00
|
|
|
void *ctx = state;
|
2010-06-10 01:26:20 +01:00
|
|
|
bool all_parameters_are_constant = true;
|
|
|
|
|
|
|
|
exec_node *node = parameters->head;
|
|
|
|
for (unsigned i = 0; i < constructor_type->length; i++) {
|
|
|
|
ir_instruction *ir = (ir_instruction *) node;
|
|
|
|
|
2010-07-29 21:52:25 +01:00
|
|
|
if (node->is_tail_sentinel()) {
|
2010-06-10 01:26:20 +01:00
|
|
|
_mesa_glsl_error(loc, state,
|
|
|
|
"insufficient parameters to constructor for `%s'",
|
|
|
|
constructor_type->name);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ir->type != constructor_type->fields.structure[i].type) {
|
|
|
|
_mesa_glsl_error(loc, state,
|
|
|
|
"parameter type mismatch in constructor for `%s' "
|
|
|
|
" (%s vs %s)",
|
|
|
|
constructor_type->name,
|
|
|
|
ir->type->name,
|
|
|
|
constructor_type->fields.structure[i].type->name);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ir->as_constant() == NULL)
|
|
|
|
all_parameters_are_constant = false;
|
|
|
|
|
|
|
|
node = node->next;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!all_parameters_are_constant)
|
|
|
|
return NULL;
|
|
|
|
|
2010-06-24 02:11:51 +01:00
|
|
|
return new(ctx) ir_constant(constructor_type, parameters);
|
2010-06-10 01:26:20 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-06-11 22:01:44 +01:00
|
|
|
/**
|
|
|
|
* Generate data for a constant matrix constructor w/a single scalar parameter
|
|
|
|
*
|
|
|
|
* Matrix constructors in GLSL can be passed a single scalar of the
|
|
|
|
* approriate type. In these cases, the resulting matrix is the identity
|
|
|
|
* matrix multipled by the specified scalar. This function generates data for
|
|
|
|
* that matrix.
|
|
|
|
*
|
|
|
|
* \param type Type of the desired matrix.
|
|
|
|
* \param initializer Scalar value used to initialize the matrix diagonal.
|
|
|
|
* \param data Location to store the resulting matrix.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
generate_constructor_matrix(const glsl_type *type, ir_constant *initializer,
|
|
|
|
ir_constant_data *data)
|
|
|
|
{
|
|
|
|
switch (type->base_type) {
|
|
|
|
case GLSL_TYPE_UINT:
|
|
|
|
case GLSL_TYPE_INT:
|
|
|
|
for (unsigned i = 0; i < type->components(); i++)
|
|
|
|
data->u[i] = 0;
|
|
|
|
|
|
|
|
for (unsigned i = 0; i < type->matrix_columns; i++) {
|
|
|
|
/* The array offset of the ith row and column of the matrix.
|
|
|
|
*/
|
|
|
|
const unsigned idx = (i * type->vector_elements) + i;
|
|
|
|
|
|
|
|
data->u[idx] = initializer->value.u[0];
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case GLSL_TYPE_FLOAT:
|
|
|
|
for (unsigned i = 0; i < type->components(); i++)
|
|
|
|
data->f[i] = 0;
|
|
|
|
|
|
|
|
for (unsigned i = 0; i < type->matrix_columns; i++) {
|
|
|
|
/* The array offset of the ith row and column of the matrix.
|
|
|
|
*/
|
|
|
|
const unsigned idx = (i * type->vector_elements) + i;
|
|
|
|
|
|
|
|
data->f[idx] = initializer->value.f[0];
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
assert(!"Should not get here.");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Generate data for a constant vector constructor w/a single scalar parameter
|
|
|
|
*
|
|
|
|
* Vector constructors in GLSL can be passed a single scalar of the
|
|
|
|
* approriate type. In these cases, the resulting vector contains the specified
|
|
|
|
* value in all components. This function generates data for that vector.
|
|
|
|
*
|
|
|
|
* \param type Type of the desired vector.
|
|
|
|
* \param initializer Scalar value used to initialize the vector.
|
|
|
|
* \param data Location to store the resulting vector data.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
generate_constructor_vector(const glsl_type *type, ir_constant *initializer,
|
|
|
|
ir_constant_data *data)
|
|
|
|
{
|
|
|
|
switch (type->base_type) {
|
|
|
|
case GLSL_TYPE_UINT:
|
|
|
|
case GLSL_TYPE_INT:
|
|
|
|
for (unsigned i = 0; i < type->components(); i++)
|
|
|
|
data->u[i] = initializer->value.u[0];
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case GLSL_TYPE_FLOAT:
|
|
|
|
for (unsigned i = 0; i < type->components(); i++)
|
|
|
|
data->f[i] = initializer->value.f[0];
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case GLSL_TYPE_BOOL:
|
|
|
|
for (unsigned i = 0; i < type->components(); i++)
|
|
|
|
data->b[i] = initializer->value.b[0];
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
assert(!"Should not get here.");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-06-23 23:19:40 +01:00
|
|
|
/**
|
|
|
|
* Determine if a list consists of a single scalar r-value
|
|
|
|
*/
|
|
|
|
bool
|
|
|
|
single_scalar_parameter(exec_list *parameters)
|
|
|
|
{
|
|
|
|
const ir_rvalue *const p = (ir_rvalue *) parameters->head;
|
|
|
|
assert(((ir_rvalue *)p)->as_rvalue() != NULL);
|
|
|
|
|
2010-07-29 21:52:25 +01:00
|
|
|
return (p->type->is_scalar() && p->next->is_tail_sentinel());
|
2010-06-23 23:19:40 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
ir_rvalue *
|
|
|
|
emit_inline_vector_constructor(const glsl_type *type,
|
|
|
|
exec_list *instructions,
|
|
|
|
exec_list *parameters,
|
|
|
|
void *ctx)
|
|
|
|
{
|
|
|
|
assert(!parameters->is_empty());
|
|
|
|
|
2010-08-03 19:40:26 +01:00
|
|
|
ir_variable *var = new(ctx) ir_variable(type, "vec_ctor", ir_var_temporary);
|
2010-06-23 23:19:40 +01:00
|
|
|
instructions->push_tail(var);
|
|
|
|
|
|
|
|
/* There are two 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 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->head;
|
|
|
|
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);
|
2010-08-04 00:05:54 +01:00
|
|
|
const unsigned mask = (1U << lhs_components) - 1;
|
2010-06-23 23:19:40 +01:00
|
|
|
|
|
|
|
assert(rhs->type == lhs->type);
|
|
|
|
|
2010-08-04 00:05:54 +01:00
|
|
|
ir_instruction *inst = new(ctx) ir_assignment(lhs, rhs, NULL, mask);
|
2010-06-23 23:19:40 +01:00
|
|
|
instructions->push_tail(inst);
|
|
|
|
} else {
|
|
|
|
unsigned base_component = 0;
|
2010-08-31 22:44:13 +01:00
|
|
|
ir_constant_data data;
|
|
|
|
unsigned constant_mask = 0;
|
|
|
|
|
|
|
|
memset(&data, 0, sizeof(data));
|
|
|
|
|
2010-06-23 23:19:40 +01:00
|
|
|
foreach_list(node, parameters) {
|
2010-08-04 00:05:54 +01:00
|
|
|
ir_rvalue *param = (ir_rvalue *) node;
|
|
|
|
unsigned rhs_components = param->type->components();
|
2010-06-23 23:19:40 +01:00
|
|
|
|
|
|
|
/* 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;
|
|
|
|
}
|
|
|
|
|
2010-08-31 22:44:13 +01:00
|
|
|
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_BOOL:
|
|
|
|
data.b[i + base_component] = c->get_bool_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_component;
|
|
|
|
}
|
2010-06-23 23:19:40 +01:00
|
|
|
|
2010-08-31 22:44:13 +01:00
|
|
|
/* Advance the component index by the number of components that were
|
|
|
|
* just assigned.
|
2010-08-04 00:05:54 +01:00
|
|
|
*/
|
2010-08-31 22:44:13 +01:00
|
|
|
base_component += rhs_components;
|
|
|
|
}
|
2010-06-23 23:19:40 +01:00
|
|
|
|
2010-08-31 22:44:13 +01:00
|
|
|
if (constant_mask != 0) {
|
2010-08-04 00:05:54 +01:00
|
|
|
ir_dereference *lhs = new(ctx) ir_dereference_variable(var);
|
2010-08-31 22:44:13 +01:00
|
|
|
ir_rvalue *rhs = new(ctx) ir_constant(var->type, &data);
|
2010-06-23 23:19:40 +01:00
|
|
|
|
2010-08-04 00:05:54 +01:00
|
|
|
ir_instruction *inst =
|
2010-08-31 22:44:13 +01:00
|
|
|
new(ctx) ir_assignment(lhs, rhs, NULL, constant_mask);
|
2010-06-23 23:19:40 +01:00
|
|
|
instructions->push_tail(inst);
|
2010-08-31 22:44:13 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
base_component = 0;
|
|
|
|
foreach_list(node, parameters) {
|
|
|
|
ir_rvalue *param = (ir_rvalue *) node;
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
const ir_constant *const c = param->as_constant();
|
|
|
|
if (c == NULL) {
|
|
|
|
/* Generate a swizzle that puts the first element of the source at
|
|
|
|
* the location of the first element of the destination.
|
|
|
|
*/
|
|
|
|
unsigned swiz[4] = { 0, 0, 0, 0 };
|
|
|
|
for (unsigned i = 0; i < rhs_components; i++)
|
|
|
|
swiz[i + base_component] = i;
|
|
|
|
|
|
|
|
/* 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);
|
|
|
|
ir_rvalue *rhs = new(ctx) ir_swizzle(param, swiz, lhs_components);
|
|
|
|
|
|
|
|
ir_instruction *inst =
|
|
|
|
new(ctx) ir_assignment(lhs, rhs, NULL, write_mask);
|
|
|
|
instructions->push_tail(inst);
|
|
|
|
}
|
2010-06-23 23:19:40 +01:00
|
|
|
|
|
|
|
/* Advance the component index by the number of components that were
|
|
|
|
* just assigned.
|
|
|
|
*/
|
|
|
|
base_component += rhs_components;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return new(ctx) ir_dereference_variable(var);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-06-26 00:10:43 +01:00
|
|
|
/**
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
ir_instruction *
|
|
|
|
assign_to_matrix_column(ir_variable *var, unsigned column, unsigned row_base,
|
|
|
|
ir_rvalue *src, unsigned src_base, unsigned count,
|
2010-08-04 04:05:53 +01:00
|
|
|
void *mem_ctx)
|
2010-06-26 00:10:43 +01:00
|
|
|
{
|
2010-08-04 04:05:53 +01:00
|
|
|
ir_constant *col_idx = new(mem_ctx) ir_constant(column);
|
2010-08-04 00:05:54 +01:00
|
|
|
ir_dereference *column_ref = new(mem_ctx) ir_dereference_array(var, col_idx);
|
2010-06-26 00:10:43 +01:00
|
|
|
|
|
|
|
assert(column_ref->type->components() >= (row_base + count));
|
|
|
|
assert(src->type->components() >= (src_base + count));
|
|
|
|
|
2010-08-04 00:05:54 +01:00
|
|
|
/* Generate a swizzle that puts the first element of the source at the
|
|
|
|
* location of the first element of the destination.
|
|
|
|
*/
|
|
|
|
unsigned swiz[4] = { src_base, src_base, src_base, src_base };
|
|
|
|
for (unsigned i = 0; i < count; i++)
|
|
|
|
swiz[i + row_base] = src_base + i;
|
|
|
|
|
|
|
|
ir_rvalue *const rhs =
|
|
|
|
new(mem_ctx) ir_swizzle(src, swiz, column_ref->type->components());
|
|
|
|
|
|
|
|
/* 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, rhs, NULL, write_mask);
|
2010-06-26 00:10:43 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
ir_rvalue *
|
|
|
|
emit_inline_matrix_constructor(const glsl_type *type,
|
|
|
|
exec_list *instructions,
|
|
|
|
exec_list *parameters,
|
|
|
|
void *ctx)
|
|
|
|
{
|
|
|
|
assert(!parameters->is_empty());
|
|
|
|
|
2010-08-03 19:40:26 +01:00
|
|
|
ir_variable *var = new(ctx) ir_variable(type, "mat_ctor", ir_var_temporary);
|
2010-06-26 00:10:43 +01:00
|
|
|
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 colum-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->head;
|
|
|
|
if (single_scalar_parameter(parameters)) {
|
|
|
|
/* Assign the scalar to the X component of a vec4, and fill the remaining
|
|
|
|
* components with zero.
|
|
|
|
*/
|
2010-06-28 21:22:55 +01:00
|
|
|
ir_variable *rhs_var =
|
2010-08-03 19:40:26 +01:00
|
|
|
new(ctx) ir_variable(glsl_type::vec4_type, "mat_ctor_vec",
|
2010-07-20 01:12:42 +01:00
|
|
|
ir_var_temporary);
|
2010-06-26 00:10:43 +01:00
|
|
|
instructions->push_tail(rhs_var);
|
|
|
|
|
|
|
|
ir_constant_data zero;
|
|
|
|
zero.f[0] = 0.0;
|
|
|
|
zero.f[1] = 0.0;
|
|
|
|
zero.f[2] = 0.0;
|
|
|
|
zero.f[3] = 0.0;
|
|
|
|
|
|
|
|
ir_instruction *inst =
|
|
|
|
new(ctx) ir_assignment(new(ctx) ir_dereference_variable(rhs_var),
|
|
|
|
new(ctx) ir_constant(rhs_var->type, &zero),
|
|
|
|
NULL);
|
|
|
|
instructions->push_tail(inst);
|
|
|
|
|
2010-08-04 00:05:54 +01:00
|
|
|
ir_dereference *const rhs_ref = new(ctx) ir_dereference_variable(rhs_var);
|
2010-06-26 00:10:43 +01:00
|
|
|
|
2010-08-04 00:05:54 +01:00
|
|
|
inst = new(ctx) ir_assignment(rhs_ref, first_param, NULL, 0x01);
|
2010-06-26 00:10:43 +01:00
|
|
|
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 }
|
|
|
|
};
|
|
|
|
|
2010-08-13 02:00:35 +01:00
|
|
|
const unsigned cols_to_init = MIN2(type->matrix_columns,
|
|
|
|
type->vector_elements);
|
2010-06-26 00:10:43 +01:00
|
|
|
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, NULL);
|
|
|
|
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, NULL);
|
|
|
|
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."
|
|
|
|
*/
|
2010-07-29 21:52:25 +01:00
|
|
|
assert(first_param->next->is_tail_sentinel());
|
2010-06-26 00:10:43 +01:00
|
|
|
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;
|
|
|
|
|
|
|
|
ident.f[0] = 0.0;
|
|
|
|
ident.f[1] = 0.0;
|
|
|
|
ident.f[2] = 0.0;
|
|
|
|
ident.f[3] = 0.0;
|
|
|
|
|
|
|
|
ident.f[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, NULL);
|
|
|
|
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.
|
|
|
|
*/
|
2010-06-28 21:22:55 +01:00
|
|
|
ir_variable *const rhs_var =
|
2010-08-03 19:40:26 +01:00
|
|
|
new(ctx) ir_variable(first_param->type, "mat_ctor_mat",
|
2010-07-20 01:12:42 +01:00
|
|
|
ir_var_temporary);
|
2010-06-26 00:10:43 +01:00
|
|
|
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, NULL);
|
|
|
|
instructions->push_tail(inst);
|
|
|
|
|
|
|
|
|
2010-08-04 00:05:54 +01:00
|
|
|
unsigned swiz[4] = { 0, 0, 0, 0 };
|
|
|
|
for (unsigned i = 1; i < src_matrix->type->vector_elements; i++)
|
|
|
|
swiz[i] = i;
|
|
|
|
|
2010-08-13 02:00:35 +01:00
|
|
|
const unsigned last_col = MIN2(src_matrix->type->matrix_columns,
|
|
|
|
var->type->matrix_columns);
|
2010-08-04 00:05:54 +01:00
|
|
|
const unsigned write_mask = (1U << var->type->vector_elements) - 1;
|
|
|
|
|
2010-06-26 00:10:43 +01:00
|
|
|
for (unsigned i = 0; i < last_col; i++) {
|
2010-08-04 00:05:54 +01:00
|
|
|
ir_dereference *const lhs =
|
2010-06-26 00:10:43 +01:00
|
|
|
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;
|
2010-08-04 00:05:54 +01:00
|
|
|
if (lhs->type->vector_elements != rhs_col->type->vector_elements) {
|
2010-06-26 00:10:43 +01:00
|
|
|
rhs = new(ctx) ir_swizzle(rhs_col, swiz,
|
2010-08-04 00:05:54 +01:00
|
|
|
lhs->type->vector_elements);
|
2010-06-26 00:10:43 +01:00
|
|
|
} else {
|
|
|
|
rhs = rhs_col;
|
|
|
|
}
|
|
|
|
|
|
|
|
assert(lhs->type == rhs->type);
|
|
|
|
|
2010-08-04 00:05:54 +01:00
|
|
|
ir_instruction *inst =
|
|
|
|
new(ctx) ir_assignment(lhs, rhs, NULL, write_mask);
|
2010-06-26 00:10:43 +01:00
|
|
|
instructions->push_tail(inst);
|
|
|
|
}
|
|
|
|
} else {
|
2010-08-17 23:57:48 +01:00
|
|
|
const unsigned cols = type->matrix_columns;
|
|
|
|
const unsigned rows = type->vector_elements;
|
2010-06-26 00:10:43 +01:00
|
|
|
unsigned col_idx = 0;
|
|
|
|
unsigned row_idx = 0;
|
|
|
|
|
|
|
|
foreach_list (node, parameters) {
|
|
|
|
ir_rvalue *const rhs = (ir_rvalue *) node;
|
|
|
|
const unsigned components_remaining_this_column = rows - row_idx;
|
|
|
|
unsigned rhs_components = rhs->type->components();
|
|
|
|
unsigned rhs_base = 0;
|
|
|
|
|
|
|
|
/* Since the parameter might be used in the RHS of two assignments,
|
|
|
|
* generate a temporary and copy the paramter there.
|
|
|
|
*/
|
2010-06-28 21:22:55 +01:00
|
|
|
ir_variable *rhs_var =
|
2010-08-03 19:40:26 +01:00
|
|
|
new(ctx) ir_variable(rhs->type, "mat_ctor_vec", ir_var_temporary);
|
2010-06-26 00:10:43 +01:00
|
|
|
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, NULL);
|
|
|
|
instructions->push_tail(inst);
|
|
|
|
|
|
|
|
/* 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.
|
|
|
|
*/
|
|
|
|
if (rhs_components >= components_remaining_this_column) {
|
2010-08-13 02:00:35 +01:00
|
|
|
const unsigned count = MIN2(rhs_components,
|
|
|
|
components_remaining_this_column);
|
2010-06-26 00:10:43 +01:00
|
|
|
|
|
|
|
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, 0,
|
|
|
|
count, ctx);
|
|
|
|
instructions->push_tail(inst);
|
|
|
|
|
|
|
|
rhs_base = count;
|
|
|
|
|
|
|
|
col_idx++;
|
|
|
|
row_idx = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If there is data left in the parameter and components left to be
|
|
|
|
* set in the destination, emit another assignment. It is possible
|
|
|
|
* that the assignment could be of a vec4 to the last element of the
|
|
|
|
* matrix. In this case col_idx==cols, but there is still data
|
|
|
|
* left in the source parameter. Obviously, don't emit an assignment
|
|
|
|
* to data outside the destination matrix.
|
|
|
|
*/
|
|
|
|
if ((col_idx < cols) && (rhs_base < rhs_components)) {
|
|
|
|
const unsigned count = 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);
|
|
|
|
|
|
|
|
row_idx += count;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return new(ctx) ir_dereference_variable(var);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-03-26 07:25:36 +00:00
|
|
|
ir_rvalue *
|
2010-03-15 20:04:13 +00:00
|
|
|
ast_function_expression::hir(exec_list *instructions,
|
|
|
|
struct _mesa_glsl_parse_state *state)
|
|
|
|
{
|
2010-06-25 21:14:37 +01:00
|
|
|
void *ctx = state;
|
2010-03-15 20:04:13 +00:00
|
|
|
/* There are three sorts of function calls.
|
|
|
|
*
|
2010-07-09 02:03:28 +01:00
|
|
|
* 1. constructors - The first subexpression is an ast_type_specifier.
|
2010-03-15 20:04:13 +00:00
|
|
|
* 2. methods - Only the .length() method of array types.
|
|
|
|
* 3. functions - Calls to regular old functions.
|
|
|
|
*
|
|
|
|
* Method calls are actually detected when the ast_field_selection
|
|
|
|
* expression is handled.
|
|
|
|
*/
|
|
|
|
if (is_constructor()) {
|
2010-03-23 22:08:30 +00:00
|
|
|
const ast_type_specifier *type = (ast_type_specifier *) subexpressions[0];
|
|
|
|
YYLTYPE loc = type->get_location();
|
2010-04-01 00:22:56 +01:00
|
|
|
const char *name;
|
2010-03-23 22:08:30 +00:00
|
|
|
|
2010-04-01 00:22:56 +01:00
|
|
|
const glsl_type *const constructor_type = type->glsl_type(& name, state);
|
2010-03-23 22:08:30 +00:00
|
|
|
|
|
|
|
|
|
|
|
/* Constructors for samplers are illegal.
|
|
|
|
*/
|
|
|
|
if (constructor_type->is_sampler()) {
|
|
|
|
_mesa_glsl_error(& loc, state, "cannot construct sampler type `%s'",
|
|
|
|
constructor_type->name);
|
2010-06-24 02:25:04 +01:00
|
|
|
return ir_call::get_error_instruction(ctx);
|
2010-03-23 22:08:30 +00:00
|
|
|
}
|
|
|
|
|
2010-04-01 00:25:21 +01:00
|
|
|
if (constructor_type->is_array()) {
|
|
|
|
if (state->language_version <= 110) {
|
|
|
|
_mesa_glsl_error(& loc, state,
|
|
|
|
"array constructors forbidden in GLSL 1.10");
|
2010-06-24 02:25:04 +01:00
|
|
|
return ir_call::get_error_instruction(ctx);
|
2010-04-01 00:25:21 +01:00
|
|
|
}
|
|
|
|
|
2010-04-01 00:48:48 +01:00
|
|
|
return process_array_constructor(instructions, constructor_type,
|
2010-05-10 18:47:14 +01:00
|
|
|
& loc, &this->expressions, state);
|
2010-04-01 00:25:21 +01:00
|
|
|
}
|
2010-03-23 22:08:30 +00:00
|
|
|
|
|
|
|
/* There are two kinds of constructor call. Constructors for built-in
|
|
|
|
* language types, such as mat4 and vec2, are free form. The only
|
|
|
|
* requirement is that the parameters must provide enough values of the
|
|
|
|
* correct scalar type. Constructors for arrays and structures must
|
|
|
|
* have the exact number of parameters with matching types in the
|
|
|
|
* correct order. These constructors follow essentially the same type
|
|
|
|
* matching rules as functions.
|
|
|
|
*/
|
2010-07-09 02:03:28 +01:00
|
|
|
if (!constructor_type->is_numeric() && !constructor_type->is_boolean())
|
|
|
|
return ir_call::get_error_instruction(ctx);
|
2010-03-27 00:38:58 +00:00
|
|
|
|
2010-07-09 02:03:28 +01:00
|
|
|
/* Total number of components of the type being constructed. */
|
|
|
|
const unsigned type_components = constructor_type->components();
|
2010-05-10 18:47:14 +01:00
|
|
|
|
2010-07-09 02:03:28 +01:00
|
|
|
/* Number of components from parameters that have actually been
|
|
|
|
* consumed. This is used to perform several kinds of error checking.
|
|
|
|
*/
|
|
|
|
unsigned components_used = 0;
|
2010-05-10 18:47:14 +01:00
|
|
|
|
2010-07-09 02:03:28 +01:00
|
|
|
unsigned matrix_parameters = 0;
|
|
|
|
unsigned nonmatrix_parameters = 0;
|
|
|
|
exec_list actual_parameters;
|
2010-03-27 00:38:58 +00:00
|
|
|
|
2010-07-09 02:03:28 +01:00
|
|
|
foreach_list (n, &this->expressions) {
|
|
|
|
ast_node *ast = exec_node_data(ast_node, n, link);
|
|
|
|
ir_rvalue *result = ast->hir(instructions, state)->as_rvalue();
|
2010-03-27 00:38:58 +00:00
|
|
|
|
|
|
|
/* From page 50 (page 56 of the PDF) of the GLSL 1.50 spec:
|
|
|
|
*
|
2010-07-09 02:03:28 +01:00
|
|
|
* "It is an error to provide extra arguments beyond this
|
|
|
|
* last used argument."
|
2010-03-27 00:38:58 +00:00
|
|
|
*/
|
2010-07-09 02:03:28 +01:00
|
|
|
if (components_used >= type_components) {
|
|
|
|
_mesa_glsl_error(& loc, state, "too many parameters to `%s' "
|
|
|
|
"constructor",
|
2010-03-27 00:38:58 +00:00
|
|
|
constructor_type->name);
|
2010-06-24 02:25:04 +01:00
|
|
|
return ir_call::get_error_instruction(ctx);
|
2010-03-27 00:38:58 +00:00
|
|
|
}
|
|
|
|
|
2010-07-09 02:03:28 +01:00
|
|
|
if (!result->type->is_numeric() && !result->type->is_boolean()) {
|
|
|
|
_mesa_glsl_error(& loc, state, "cannot construct `%s' from a "
|
|
|
|
"non-numeric data type",
|
2010-03-27 00:38:58 +00:00
|
|
|
constructor_type->name);
|
2010-06-24 02:25:04 +01:00
|
|
|
return ir_call::get_error_instruction(ctx);
|
2010-03-27 00:38:58 +00:00
|
|
|
}
|
|
|
|
|
2010-07-09 02:03:28 +01:00
|
|
|
/* 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++;
|
2010-03-27 00:38:58 +00:00
|
|
|
|
2010-07-09 02:03:28 +01:00
|
|
|
actual_parameters.push_tail(result);
|
|
|
|
components_used += result->type->components();
|
2010-03-27 00:38:58 +00:00
|
|
|
}
|
2010-03-23 22:08:30 +00:00
|
|
|
|
2010-07-09 02:03:28 +01:00
|
|
|
/* 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 ((state->language_version <= 110) && (matrix_parameters > 0)
|
|
|
|
&& constructor_type->is_matrix()) {
|
|
|
|
_mesa_glsl_error(& loc, state, "cannot construct `%s' from a "
|
|
|
|
"matrix in GLSL 1.10",
|
|
|
|
constructor_type->name);
|
|
|
|
return ir_call::get_error_instruction(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_call::get_error_instruction(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)) {
|
|
|
|
_mesa_glsl_error(& loc, state, "too few components to construct "
|
|
|
|
"`%s'",
|
|
|
|
constructor_type->name);
|
|
|
|
return ir_call::get_error_instruction(ctx);
|
|
|
|
}
|
|
|
|
|
2010-07-09 02:15:32 +01:00
|
|
|
/* Later, we cast each parameter to the same base type as the
|
|
|
|
* constructor. Since there are no non-floating point matrices, we
|
|
|
|
* need to break them up into a series of column vectors.
|
|
|
|
*/
|
|
|
|
if (constructor_type->base_type != GLSL_TYPE_FLOAT) {
|
|
|
|
foreach_list_safe(n, &actual_parameters) {
|
|
|
|
ir_rvalue *matrix = (ir_rvalue *) n;
|
|
|
|
|
|
|
|
if (!matrix->type->is_matrix())
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/* Create a temporary containing the matrix. */
|
2010-07-20 01:12:42 +01:00
|
|
|
ir_variable *var = new(ctx) ir_variable(matrix->type, "matrix_tmp",
|
|
|
|
ir_var_temporary);
|
2010-07-09 02:15:32 +01:00
|
|
|
instructions->push_tail(var);
|
|
|
|
instructions->push_tail(new(ctx) ir_assignment(new(ctx)
|
|
|
|
ir_dereference_variable(var), matrix, NULL));
|
|
|
|
var->constant_value = matrix->constant_expression_value();
|
|
|
|
|
|
|
|
/* 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_list_safe(n, &actual_parameters) {
|
|
|
|
ir_rvalue *ir = (ir_rvalue *) n;
|
|
|
|
|
|
|
|
const glsl_type *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();
|
|
|
|
|
|
|
|
if (constant != NULL)
|
|
|
|
result = constant;
|
|
|
|
else
|
|
|
|
all_parameters_are_constant = false;
|
|
|
|
|
|
|
|
if (result != ir) {
|
2010-07-20 05:44:03 +01:00
|
|
|
ir->replace_with(result);
|
2010-07-09 02:15:32 +01:00
|
|
|
}
|
|
|
|
}
|
2010-07-09 02:03:28 +01:00
|
|
|
|
|
|
|
/* If all of the parameters are trivially constant, create a
|
|
|
|
* constant representing the complete collection of parameters.
|
|
|
|
*/
|
|
|
|
if (all_parameters_are_constant) {
|
|
|
|
if (components_used >= type_components)
|
|
|
|
return new(ctx) ir_constant(constructor_type,
|
|
|
|
& actual_parameters);
|
|
|
|
|
|
|
|
/* The above case must handle all scalar constructors.
|
|
|
|
*/
|
|
|
|
assert(constructor_type->is_vector()
|
|
|
|
|| constructor_type->is_matrix());
|
|
|
|
|
|
|
|
/* Constructors with exactly one component are special for
|
|
|
|
* vectors and matrices. For vectors it causes all elements of
|
|
|
|
* the vector to be filled with the value. For matrices it
|
|
|
|
* causes the matrix to be filled with 0 and the diagonal to be
|
|
|
|
* filled with the value.
|
|
|
|
*/
|
2010-08-29 22:05:07 +01:00
|
|
|
ir_constant_data data = { { 0 } };
|
2010-07-09 02:03:28 +01:00
|
|
|
ir_constant *const initializer =
|
|
|
|
(ir_constant *) actual_parameters.head;
|
|
|
|
if (constructor_type->is_matrix())
|
|
|
|
generate_constructor_matrix(constructor_type, initializer,
|
|
|
|
&data);
|
|
|
|
else
|
|
|
|
generate_constructor_vector(constructor_type, initializer,
|
|
|
|
&data);
|
|
|
|
|
|
|
|
return new(ctx) ir_constant(constructor_type, &data);
|
|
|
|
} else if (constructor_type->is_scalar()) {
|
|
|
|
return dereference_component((ir_rvalue *) actual_parameters.head,
|
|
|
|
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);
|
|
|
|
}
|
2010-03-15 20:04:13 +00:00
|
|
|
} else {
|
|
|
|
const ast_expression *id = subexpressions[0];
|
2010-03-15 20:26:02 +00:00
|
|
|
YYLTYPE loc = id->get_location();
|
2010-06-10 01:23:26 +01:00
|
|
|
exec_list actual_parameters;
|
|
|
|
|
|
|
|
process_parameters(instructions, &actual_parameters, &this->expressions,
|
|
|
|
state);
|
2010-03-15 20:04:13 +00:00
|
|
|
|
2010-06-10 01:26:20 +01:00
|
|
|
const glsl_type *const type =
|
|
|
|
state->symbols->get_type(id->primary_expression.identifier);
|
|
|
|
|
|
|
|
if ((type != NULL) && type->is_record()) {
|
|
|
|
ir_constant *constant =
|
|
|
|
constant_record_constructor(type, &loc, &actual_parameters, state);
|
|
|
|
|
|
|
|
if (constant != NULL)
|
|
|
|
return constant;
|
|
|
|
}
|
|
|
|
|
2010-03-15 20:26:02 +00:00
|
|
|
return match_function_by_name(instructions,
|
|
|
|
id->primary_expression.identifier, & loc,
|
2010-06-10 01:23:26 +01:00
|
|
|
&actual_parameters, state);
|
2010-03-15 20:04:13 +00:00
|
|
|
}
|
|
|
|
|
2010-06-24 02:25:04 +01:00
|
|
|
return ir_call::get_error_instruction(ctx);
|
2010-03-15 20:04:13 +00:00
|
|
|
}
|