libX11 libXinerama mesa git update 1 Feb 2011

1 files changed, 227 insertions, 226 deletions

diff --git a/mesalib/src/glsl/ir_function.cpp b/mesalib/src/glsl/ir_function.cpp
index 4997570d0..caee9296a 100644
--- a/mesalib/src/glsl/ir_function.cpp
+++ b/mesalib/src/glsl/ir_function.cpp
@@ -1,226 +1,227 @@
-/*

- * 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;

-}

+/*
+ * 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_const_in:
+      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;
+}