mesa: glsl: assorted fixes for resolving polymorphic functions

Plus,
- fix some issues in casting function arguments to format param types.
- fix some vec/mat constructor bugs
- find/report more syntax/semantic errors

1 files changed, 124 insertions, 102 deletions

diff --git a/src/mesa/shader/slang/slang_simplify.c b/src/mesa/shader/slang/slang_simplify.c
index c34bef2164..c4bf0175be 100644
--- a/src/mesa/shader/slang/slang_simplify.c
+++ b/src/mesa/shader/slang/slang_simplify.c
@@ -1,8 +1,8 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.5.2
+ * Version:  7.1
  *
- * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2005-2008  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"),
@@ -23,11 +23,11 @@
  */
 
 /**
- * \file slang_assemble_typeinfo.c
- * slang type info
- * \author Michal Krol
+ * Functions for constant folding, built-in constant lookup, and function
+ * call casting.
  */
 
+
 #include "main/imports.h"
 #include "main/macros.h"
 #include "main/get.h"
@@ -314,17 +314,18 @@ _slang_simplify(slang_operation *oper,
 
 
 /**
- * Adapt the arguments for a function call to match the parameters of
- * the given function.
- * This is for:
- * 1. converting/casting argument types to match parameters
- * 2. breaking up vector/matrix types into individual components to
- *    satisfy constructors.
+ * Insert casts to try to adapt actual parameters to formal parameters for a
+ * function call when an exact match for the parameter types is not found.
+ * Example:
+ *   void foo(int i, bool b) {}
+ *   x = foo(3.15, 9);
+ * Gets translated into:
+ *   x = foo(int(3.15), bool(9))
  */
 GLboolean
-_slang_adapt_call(slang_operation *callOper, const slang_function *fun,
-                  const slang_name_space * space,
-                  slang_atom_pool * atoms, slang_info_log *log)
+_slang_cast_func_params(slang_operation *callOper, const slang_function *fun,
+                        const slang_name_space * space,
+                        slang_atom_pool * atoms, slang_info_log *log)
 {
    const GLboolean haveRetValue = _slang_function_has_return_value(fun);
    const int numParams = fun->param_count - haveRetValue;
@@ -332,95 +333,9 @@ _slang_adapt_call(slang_operation *callOper, const slang_function *fun,
    int dbg = 0;
 
    if (dbg)
-      printf("Adapt %d args to %d parameters for %s\n",
-             callOper->num_children, numParams, (char *) fun->header.a_name);
+      printf("Adapt call of %d args to func %s (%d params)\n",
+             callOper->num_children, (char*) fun->header.a_name, numParams);
 
-   /* Only try adapting for constructors */
-   if (fun->kind != SLANG_FUNC_CONSTRUCTOR)
-      return GL_FALSE;
-
-   if (callOper->num_children != numParams) {
-      /* number of arguments doesn't match number of parameters */
-
-      if (fun->kind == SLANG_FUNC_CONSTRUCTOR) {
-         /* For constructor calls, we can try to unroll vector/matrix args
-          * into individual floats/ints and try to match the function params.
-          */
-         for (i = 0; i < numParams; i++) {
-            slang_typeinfo argType;
-            GLint argSz, j;
-
-            /* Get type of arg[i] */
-            if (!slang_typeinfo_construct(&argType))
-               return GL_FALSE;
-            if (!_slang_typeof_operation_(&callOper->children[i], space,
-                                          &argType, atoms, log)) {
-               slang_typeinfo_destruct(&argType);
-               return GL_FALSE;
-            }
-
-            /*
-            paramSz = _slang_sizeof_type_specifier(&paramVar->type.specifier);
-            assert(paramSz == 1);
-            */
-            argSz = _slang_sizeof_type_specifier(&argType.spec);
-            if (argSz > 1) {
-               slang_operation origArg;
-               /* break up arg[i] into components */
-               if (dbg)
-                  printf("Break up arg %d from 1 to %d elements\n", i, argSz);
-
-               slang_operation_construct(&origArg);
-               slang_operation_copy(&origArg,
-                                    &callOper->children[i]);
-
-               /* insert argSz-1 new children/args */
-               for (j = 0; j < argSz - 1; j++) {
-                  (void) slang_operation_insert(&callOper->num_children,
-                                                &callOper->children, i);
-               }
-
-               /* replace arg[i+j] with subscript/index oper */
-               for (j = 0; j < argSz; j++) {
-                  callOper->children[i + j].type = SLANG_OPER_SUBSCRIPT;
-                  callOper->children[i + j].num_children = 2;
-                  callOper->children[i + j].children = slang_operation_new(2);
-                  slang_operation_copy(&callOper->children[i + j].children[0],
-                                       &origArg);
-                  callOper->children[i + j].children[1].type
-                     = SLANG_OPER_LITERAL_INT;
-                  callOper->children[i + j].children[1].literal[0] = (GLfloat) j;
-               }
-
-            }
-         } /* for i */
-      }
-      else {
-         /* non-constructor function: number of args must match number
-          * of function params.
-          */
-         return GL_FALSE; /* caller will record an error msg */
-      }
-   }
-
-   if (callOper->num_children < (GLuint) numParams) {
-      /* still not enough args for all params */
-      return GL_FALSE;
-   }
-   else if (callOper->num_children > (GLuint) numParams) {
-      /* now too many arguments */
-      /* XXX this isn't always an error, see spec */
-      return GL_FALSE;
-   }
-
-   /*
-    * Second phase, argument casting.
-    * Example:
-    *   void foo(int i, bool b) {}
-    *   x = foo(3.15, 9);
-    * Gets translated into:
-    *   x = foo(int(3.15), bool(9))
-    */
    for (i = 0; i < numParams; i++) {
       slang_typeinfo argType;
       slang_variable *paramVar = fun->parameters->variables[i];
@@ -448,6 +363,12 @@ _slang_adapt_call(slang_operation *callOper, const slang_function *fun,
          slang_operation_copy(child, &callOper->children[i]);
          child->locals->outer_scope = callOper->children[i].locals;
 
+#if 0
+         if (_slang_sizeof_type_specifier(&argType.spec) >
+             _slang_sizeof_type_specifier(&paramVar->type.specifier)) {
+         }
+#endif
+
          callOper->children[i].type = SLANG_OPER_CALL;
          callOper->children[i].a_id = slang_atom_pool_atom(atoms, constructorName);
          callOper->children[i].num_children = 1;
@@ -458,6 +379,107 @@ _slang_adapt_call(slang_operation *callOper, const slang_function *fun,
    }
 
    if (dbg) {
+      printf("===== New call to %s with cast arguments ===============\n",
+             (char*) fun->header.a_name);
+      slang_print_tree(callOper, 5);
+   }
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Adapt the arguments for a function call to match the parameters of
+ * the given function.
+ * This is for:
+ * 1. converting/casting argument types to match parameters
+ * 2. breaking up vector/matrix types into individual components to
+ *    satisfy constructors.
+ */
+GLboolean
+_slang_adapt_call(slang_operation *callOper, const slang_function *fun,
+                  const slang_name_space * space,
+                  slang_atom_pool * atoms, slang_info_log *log)
+{
+   const GLboolean haveRetValue = _slang_function_has_return_value(fun);
+   const int numParams = fun->param_count - haveRetValue;
+   int i;
+   int dbg = 0;
+
+   if (dbg)
+      printf("Adapt %d args to %d parameters for %s\n",
+             callOper->num_children, numParams, (char *) fun->header.a_name);
+
+   /* Only try adapting for constructors */
+   if (fun->kind != SLANG_FUNC_CONSTRUCTOR)
+      return GL_FALSE;
+
+   if (callOper->num_children != numParams) {
+      /* number of arguments doesn't match number of parameters */
+
+      /* For constructor calls, we can try to unroll vector/matrix args
+       * into individual floats/ints and try to match the function params.
+       */
+      for (i = 0; i < numParams; i++) {
+         slang_typeinfo argType;
+         GLint argSz, j;
+
+         /* Get type of arg[i] */
+         if (!slang_typeinfo_construct(&argType))
+            return GL_FALSE;
+         if (!_slang_typeof_operation_(&callOper->children[i], space,
+                                       &argType, atoms, log)) {
+            slang_typeinfo_destruct(&argType);
+            return GL_FALSE;
+         }
+
+         /*
+           paramSz = _slang_sizeof_type_specifier(&paramVar->type.specifier);
+           assert(paramSz == 1);
+         */
+         argSz = _slang_sizeof_type_specifier(&argType.spec);
+         if (argSz > 1) {
+            slang_operation origArg;
+            /* break up arg[i] into components */
+            if (dbg)
+               printf("Break up arg %d from 1 to %d elements\n", i, argSz);
+
+            slang_operation_construct(&origArg);
+            slang_operation_copy(&origArg, &callOper->children[i]);
+
+            /* insert argSz-1 new children/args */
+            for (j = 0; j < argSz - 1; j++) {
+               (void) slang_operation_insert(&callOper->num_children,
+                                             &callOper->children, i);
+            }
+
+            /* replace arg[i+j] with subscript/index oper */
+            for (j = 0; j < argSz; j++) {
+               callOper->children[i + j].type = SLANG_OPER_SUBSCRIPT;
+               callOper->children[i + j].locals = _slang_variable_scope_new(callOper->locals);
+               callOper->children[i + j].num_children = 2;
+               callOper->children[i + j].children = slang_operation_new(2);
+               slang_operation_copy(&callOper->children[i + j].children[0],
+                                    &origArg);
+               callOper->children[i + j].children[1].type
+                  = SLANG_OPER_LITERAL_INT;
+               callOper->children[i + j].children[1].literal[0] = (GLfloat) j;
+            }
+         }
+      }
+   }
+
+   if (callOper->num_children < (GLuint) numParams) {
+      /* still not enough args for all params */
+      return GL_FALSE;
+   }
+   else if (callOper->num_children > (GLuint) numParams) {
+      /* now too many arguments */
+      /* just truncate */
+      callOper->num_children = (GLuint) numParams;
+   }
+
+   if (dbg) {
       printf("===== New call to %s with adapted arguments ===============\n",
              (char*) fun->header.a_name);
       slang_print_tree(callOper, 5);