From 807c6931fe683fd844ceec1b023232181e6aae03 Mon Sep 17 00:00:00 2001 From: marha Date: Tue, 28 Dec 2010 16:10:20 +0000 Subject: xserver and mesa git update 28-12-2010 --- mesalib/src/glsl/ir_function.cpp | 453 +++++++++++++++++++-------------------- 1 file changed, 226 insertions(+), 227 deletions(-) (limited to 'mesalib/src/glsl/ir_function.cpp') diff --git a/mesalib/src/glsl/ir_function.cpp b/mesalib/src/glsl/ir_function.cpp index dfdec144b..4997570d0 100644 --- a/mesalib/src/glsl/ir_function.cpp +++ b/mesalib/src/glsl/ir_function.cpp @@ -1,227 +1,226 @@ -/* - * Copyright © 2010 Intel Corporation - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -#include "glsl_types.h" -#include "ir.h" - -int -type_compare(const glsl_type *a, const glsl_type *b) -{ - /* If the types are the same, they trivially match. - */ - if (a == b) - return 0; - - switch (a->base_type) { - case GLSL_TYPE_UINT: - case GLSL_TYPE_INT: - case GLSL_TYPE_BOOL: - /* There is no implicit conversion to or from integer types or bool. - */ - if ((a->is_integer() != b->is_integer()) - || (a->is_boolean() != b->is_boolean())) - return -1; - - /* FALLTHROUGH */ - - case GLSL_TYPE_FLOAT: - if ((a->vector_elements != b->vector_elements) - || (a->matrix_columns != b->matrix_columns)) - return -1; - - return 1; - - case GLSL_TYPE_SAMPLER: - case GLSL_TYPE_STRUCT: - /* Samplers and structures must match exactly. - */ - return -1; - - case GLSL_TYPE_ARRAY: - if ((b->base_type != GLSL_TYPE_ARRAY) - || (a->length != b->length)) - return -1; - - /* From GLSL 1.50 spec, page 27 (page 33 of the PDF): - * "There are no implicit array or structure conversions." - * - * If the comparison of the array element types detects that a conversion - * would be required, the array types do not match. - */ - return (type_compare(a->fields.array, b->fields.array) == 0) ? 0 : -1; - - case GLSL_TYPE_FUNCTION: - case GLSL_TYPE_VOID: - case GLSL_TYPE_ERROR: - default: - /* These are all error conditions. It is invalid for a parameter to - * a function to be declared as error, void, or a function. - */ - return -1; - } - - /* This point should be unreachable. - */ - assert(0); -} - - -static int -parameter_lists_match(const exec_list *list_a, const exec_list *list_b) -{ - const exec_node *node_a = list_a->head; - const exec_node *node_b = list_b->head; - int total_score = 0; - - for (/* empty */ - ; !node_a->is_tail_sentinel() - ; node_a = node_a->next, node_b = node_b->next) { - /* If all of the parameters from the other parameter list have been - * exhausted, the lists have different length and, by definition, - * do not match. - */ - if (node_b->is_tail_sentinel()) - return -1; - - - const ir_variable *const param = (ir_variable *) node_a; - const ir_instruction *const actual = (ir_instruction *) node_b; - - /* Determine whether or not the types match. If the types are an - * exact match, the match score is zero. If the types don't match - * but the actual parameter can be coerced to the type of the declared - * parameter, the match score is one. - */ - int score; - switch ((enum ir_variable_mode)(param->mode)) { - case ir_var_auto: - case ir_var_uniform: - case ir_var_temporary: - /* These are all error conditions. It is invalid for a parameter to - * a function to be declared as auto (not in, out, or inout) or - * as uniform. - */ - assert(0); - return -1; - - case ir_var_in: - score = type_compare(param->type, actual->type); - break; - - case ir_var_out: - score = type_compare(actual->type, param->type); - break; - - case ir_var_inout: - /* Since there are no bi-directional automatic conversions (e.g., - * there is int -> float but no float -> int), inout parameters must - * be exact matches. - */ - score = (type_compare(actual->type, param->type) == 0) ? 0 : -1; - break; - - default: - assert(false); - } - - if (score < 0) - return -1; - - total_score += score; - } - - /* If all of the parameters from the other parameter list have been - * exhausted, the lists have different length and, by definition, do not - * match. - */ - if (!node_b->is_tail_sentinel()) - return -1; - - return total_score; -} - - -ir_function_signature * -ir_function::matching_signature(const exec_list *actual_parameters) -{ - ir_function_signature *match = NULL; - - foreach_iter(exec_list_iterator, iter, signatures) { - ir_function_signature *const sig = - (ir_function_signature *) iter.get(); - - const int score = parameter_lists_match(& sig->parameters, - actual_parameters); - - if (score == 0) - return sig; - - if (score > 0) { - if (match != NULL) - return NULL; - - match = sig; - } - } - - return match; -} - - -static bool -parameter_lists_match_exact(const exec_list *list_a, const exec_list *list_b) -{ - const exec_node *node_a = list_a->head; - const exec_node *node_b = list_b->head; - - for (/* empty */ - ; !node_a->is_tail_sentinel() && !node_b->is_tail_sentinel() - ; node_a = node_a->next, node_b = node_b->next) { - ir_variable *a = (ir_variable *) node_a; - ir_variable *b = (ir_variable *) node_b; - - /* If the types of the parameters do not match, the parameters lists - * are different. - */ - if (a->type != b->type) - return false; - } - - /* Unless both lists are exhausted, they differ in length and, by - * definition, do not match. - */ - return (node_a->is_tail_sentinel() == node_b->is_tail_sentinel()); -} - -ir_function_signature * -ir_function::exact_matching_signature(const exec_list *actual_parameters) -{ - foreach_iter(exec_list_iterator, iter, signatures) { - ir_function_signature *const sig = - (ir_function_signature *) iter.get(); - - if (parameter_lists_match_exact(&sig->parameters, actual_parameters)) - return sig; - } - return NULL; -} +/* + * Copyright © 2010 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include "glsl_types.h" +#include "ir.h" + +int +type_compare(const glsl_type *a, const glsl_type *b) +{ + /* If the types are the same, they trivially match. + */ + if (a == b) + return 0; + + switch (a->base_type) { + case GLSL_TYPE_UINT: + case GLSL_TYPE_INT: + case GLSL_TYPE_BOOL: + /* There is no implicit conversion to or from integer types or bool. + */ + if ((a->is_integer() != b->is_integer()) + || (a->is_boolean() != b->is_boolean())) + return -1; + + /* FALLTHROUGH */ + + case GLSL_TYPE_FLOAT: + if ((a->vector_elements != b->vector_elements) + || (a->matrix_columns != b->matrix_columns)) + return -1; + + return 1; + + case GLSL_TYPE_SAMPLER: + case GLSL_TYPE_STRUCT: + /* Samplers and structures must match exactly. + */ + return -1; + + case GLSL_TYPE_ARRAY: + if ((b->base_type != GLSL_TYPE_ARRAY) + || (a->length != b->length)) + return -1; + + /* From GLSL 1.50 spec, page 27 (page 33 of the PDF): + * "There are no implicit array or structure conversions." + * + * If the comparison of the array element types detects that a conversion + * would be required, the array types do not match. + */ + return (type_compare(a->fields.array, b->fields.array) == 0) ? 0 : -1; + + case GLSL_TYPE_VOID: + case GLSL_TYPE_ERROR: + default: + /* These are all error conditions. It is invalid for a parameter to + * a function to be declared as error, void, or a function. + */ + return -1; + } + + /* This point should be unreachable. + */ + assert(0); +} + + +static int +parameter_lists_match(const exec_list *list_a, const exec_list *list_b) +{ + const exec_node *node_a = list_a->head; + const exec_node *node_b = list_b->head; + int total_score = 0; + + for (/* empty */ + ; !node_a->is_tail_sentinel() + ; node_a = node_a->next, node_b = node_b->next) { + /* If all of the parameters from the other parameter list have been + * exhausted, the lists have different length and, by definition, + * do not match. + */ + if (node_b->is_tail_sentinel()) + return -1; + + + const ir_variable *const param = (ir_variable *) node_a; + const ir_instruction *const actual = (ir_instruction *) node_b; + + /* Determine whether or not the types match. If the types are an + * exact match, the match score is zero. If the types don't match + * but the actual parameter can be coerced to the type of the declared + * parameter, the match score is one. + */ + int score; + switch ((enum ir_variable_mode)(param->mode)) { + case ir_var_auto: + case ir_var_uniform: + case ir_var_temporary: + /* These are all error conditions. It is invalid for a parameter to + * a function to be declared as auto (not in, out, or inout) or + * as uniform. + */ + assert(0); + return -1; + + case ir_var_in: + score = type_compare(param->type, actual->type); + break; + + case ir_var_out: + score = type_compare(actual->type, param->type); + break; + + case ir_var_inout: + /* Since there are no bi-directional automatic conversions (e.g., + * there is int -> float but no float -> int), inout parameters must + * be exact matches. + */ + score = (type_compare(actual->type, param->type) == 0) ? 0 : -1; + break; + + default: + assert(false); + } + + if (score < 0) + return -1; + + total_score += score; + } + + /* If all of the parameters from the other parameter list have been + * exhausted, the lists have different length and, by definition, do not + * match. + */ + if (!node_b->is_tail_sentinel()) + return -1; + + return total_score; +} + + +ir_function_signature * +ir_function::matching_signature(const exec_list *actual_parameters) +{ + ir_function_signature *match = NULL; + + foreach_iter(exec_list_iterator, iter, signatures) { + ir_function_signature *const sig = + (ir_function_signature *) iter.get(); + + const int score = parameter_lists_match(& sig->parameters, + actual_parameters); + + if (score == 0) + return sig; + + if (score > 0) { + if (match != NULL) + return NULL; + + match = sig; + } + } + + return match; +} + + +static bool +parameter_lists_match_exact(const exec_list *list_a, const exec_list *list_b) +{ + const exec_node *node_a = list_a->head; + const exec_node *node_b = list_b->head; + + for (/* empty */ + ; !node_a->is_tail_sentinel() && !node_b->is_tail_sentinel() + ; node_a = node_a->next, node_b = node_b->next) { + ir_variable *a = (ir_variable *) node_a; + ir_variable *b = (ir_variable *) node_b; + + /* If the types of the parameters do not match, the parameters lists + * are different. + */ + if (a->type != b->type) + return false; + } + + /* Unless both lists are exhausted, they differ in length and, by + * definition, do not match. + */ + return (node_a->is_tail_sentinel() == node_b->is_tail_sentinel()); +} + +ir_function_signature * +ir_function::exact_matching_signature(const exec_list *actual_parameters) +{ + foreach_iter(exec_list_iterator, iter, signatures) { + ir_function_signature *const sig = + (ir_function_signature *) iter.get(); + + if (parameter_lists_match_exact(&sig->parameters, actual_parameters)) + return sig; + } + return NULL; +} -- cgit v1.2.3