Added MesaLib-7.6

1 files changed, 262 insertions, 0 deletions

diff --git a/mesalib/src/mesa/shader/slang/slang_compile_function.c b/mesalib/src/mesa/shader/slang/slang_compile_function.c
new file mode 100644
index 000000000..4dd885176
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_compile_function.c
@@ -0,0 +1,262 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ *
+ * 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 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
+ * BRIAN PAUL 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.
+ */
+
+/**
+ * \file slang_compile_function.c
+ * slang front-end compiler
+ * \author Michal Krol
+ */
+
+#include "main/imports.h"
+#include "slang_compile.h"
+#include "slang_mem.h"
+
+
+int
+slang_function_construct(slang_function * func)
+{
+   func->kind = SLANG_FUNC_ORDINARY;
+   if (!slang_variable_construct(&func->header))
+      return 0;
+
+   func->parameters = (slang_variable_scope *)
+      _slang_alloc(sizeof(slang_variable_scope));
+   if (func->parameters == NULL) {
+      slang_variable_destruct(&func->header);
+      return 0;
+   }
+
+   _slang_variable_scope_ctr(func->parameters);
+   func->param_count = 0;
+   func->body = NULL;
+   return 1;
+}
+
+void
+slang_function_destruct(slang_function * func)
+{
+   slang_variable_destruct(&func->header);
+   slang_variable_scope_destruct(func->parameters);
+   _slang_free(func->parameters);
+   if (func->body != NULL) {
+      slang_operation_destruct(func->body);
+      _slang_free(func->body);
+   }
+}
+
+
+slang_function *
+slang_function_new(slang_function_kind kind)
+{
+   slang_function *fun = (slang_function *)
+      _slang_alloc(sizeof(slang_function));
+   if (fun) {
+      slang_function_construct(fun);
+      fun->kind = kind;
+   }
+   return fun;
+}
+
+
+/*
+ * slang_function_scope
+ */
+
+GLvoid
+_slang_function_scope_ctr(slang_function_scope * self)
+{
+   self->functions = NULL;
+   self->num_functions = 0;
+   self->outer_scope = NULL;
+}
+
+void
+slang_function_scope_destruct(slang_function_scope * scope)
+{
+   unsigned int i;
+
+   for (i = 0; i < scope->num_functions; i++)
+      slang_function_destruct(scope->functions + i);
+   _slang_free(scope->functions);
+}
+
+
+/**
+ * Does this function have a non-void return value?
+ */
+GLboolean
+_slang_function_has_return_value(const slang_function *fun)
+{
+   return fun->header.type.specifier.type != SLANG_SPEC_VOID;
+}
+
+
+/**
+ * Search a list of functions for a particular function by name.
+ * \param funcs  the list of functions to search
+ * \param a_name  the name to search for
+ * \param all_scopes  if non-zero, search containing scopes too.
+ * \return pointer to found function, or NULL.
+ */
+int
+slang_function_scope_find_by_name(slang_function_scope * funcs,
+                                  slang_atom a_name, int all_scopes)
+{
+   unsigned int i;
+
+   for (i = 0; i < funcs->num_functions; i++)
+      if (a_name == funcs->functions[i].header.a_name)
+         return 1;
+   if (all_scopes && funcs->outer_scope != NULL)
+      return slang_function_scope_find_by_name(funcs->outer_scope, a_name, 1);
+   return 0;
+}
+
+
+/**
+ * Search a list of functions for a particular function (for implementing
+ * function calls.  Matching is done by first comparing the function's name,
+ * then the function's parameter list.
+ *
+ * \param funcs  the list of functions to search
+ * \param fun  the function to search for
+ * \param all_scopes  if non-zero, search containing scopes too.
+ * \return pointer to found function, or NULL.
+ */
+slang_function *
+slang_function_scope_find(slang_function_scope * funcs, slang_function * fun,
+                          int all_scopes)
+{
+   unsigned int i;
+
+   for (i = 0; i < funcs->num_functions; i++) {
+      slang_function *f = &funcs->functions[i];
+      const GLuint haveRetValue = 0;
+#if 0
+         = (f->header.type.specifier.type != SLANG_SPEC_VOID);
+#endif
+      unsigned int j;
+
+      /*
+      printf("Compare name %s to %s  (ret %u, %d, %d)\n",
+             (char *) fun->header.a_name, (char *) f->header.a_name,
+             haveRetValue,
+             fun->param_count, f->param_count);
+      */
+
+      if (fun->header.a_name != f->header.a_name)
+         continue;
+      if (fun->param_count != f->param_count)
+         continue;
+      for (j = haveRetValue; j < fun->param_count; j++) {
+         if (!slang_type_specifier_equal
+             (&fun->parameters->variables[j]->type.specifier,
+              &f->parameters->variables[j]->type.specifier))
+            break;
+      }
+      if (j == fun->param_count) {
+         /*
+         printf("Found match\n");
+         */
+         return f;
+      }
+   }
+   /*
+   printf("Not found\n");
+   */
+   if (all_scopes && funcs->outer_scope != NULL)
+      return slang_function_scope_find(funcs->outer_scope, fun, 1);
+   return NULL;
+}
+
+
+/**
+ * Lookup a function according to name and parameter count/types.
+ */
+slang_function *
+_slang_function_locate(const slang_function_scope * funcs, slang_atom a_name,
+                       slang_operation * args, GLuint num_args,
+                       const slang_name_space * space, slang_atom_pool * atoms,
+                       slang_info_log *log, GLboolean *error)
+{
+   slang_typeinfo arg_ti[100];
+   GLuint i;
+
+   *error = GL_FALSE;
+
+   /* determine type of each argument */
+   assert(num_args < 100);
+   for (i = 0; i < num_args; i++) {
+      if (!slang_typeinfo_construct(&arg_ti[i]))
+         return NULL;
+      if (!_slang_typeof_operation(&args[i], space, &arg_ti[i], atoms, log)) {
+         return NULL;
+      }
+   }
+
+   /* loop over function scopes */
+   while (funcs) {
+
+      /* look for function with matching name and argument/param types */
+      for (i = 0; i < funcs->num_functions; i++) {
+         slang_function *f = &funcs->functions[i];
+         const GLuint haveRetValue = _slang_function_has_return_value(f);
+         GLuint j;
+
+         if (a_name != f->header.a_name)
+            continue;
+         if (f->param_count - haveRetValue != num_args)
+            continue;
+
+         /* compare parameter / argument types */
+         for (j = 0; j < num_args; j++) {
+            if (!slang_type_specifier_compatible(&arg_ti[j].spec,
+                              &f->parameters->variables[j]->type.specifier)) {
+               /* param/arg types don't match */
+               break;
+            }
+
+            /* "out" and "inout" formal parameter requires the actual
+             * argument to be an l-value.
+             */
+            if (!arg_ti[j].can_be_referenced &&
+                (f->parameters->variables[j]->type.qualifier == SLANG_QUAL_OUT ||
+                 f->parameters->variables[j]->type.qualifier == SLANG_QUAL_INOUT)) {
+               /* param is not an lvalue! */
+               *error = GL_TRUE;
+               return NULL;
+            }
+         }
+
+         if (j == num_args) {
+            /* name and args match! */
+            return f;
+         }
+      }
+
+      funcs = funcs->outer_scope;
+   }
+
+   return NULL;
+}