glsl: Remove GLSL_TYPE_FUNCTION define.

Functions are not first class objects in GLSL, so there is never a value
of function type.  No code actually used this except for one function
which asserted it shouldn't occur.  One comment mentioned it, but was
incorrect.  So we may as well remove it entirely.

2 files changed, 2 insertions, 9 deletions

diff --git a/src/glsl/glsl_types.h b/src/glsl/glsl_types.h
index dccab0a60d..d38ef0b88b 100644
--- a/src/glsl/glsl_types.h
+++ b/src/glsl/glsl_types.h
@@ -50,9 +50,8 @@ _mesa_glsl_release_types(void);
 #define GLSL_TYPE_SAMPLER       4
 #define GLSL_TYPE_STRUCT        5
 #define GLSL_TYPE_ARRAY         6
-#define GLSL_TYPE_FUNCTION      7
-#define GLSL_TYPE_VOID          8
-#define GLSL_TYPE_ERROR         9
+#define GLSL_TYPE_VOID          7
+#define GLSL_TYPE_ERROR         8
 
 enum glsl_sampler_dim {
    GLSL_SAMPLER_DIM_1D = 0,
@@ -123,11 +122,6 @@ struct glsl_type {
     * For \c GLSL_TYPE_ARRAY, this is the length of the array.  For
     * \c GLSL_TYPE_STRUCT, it is the number of elements in the structure and
     * the number of values pointed to by \c fields.structure (below).
-    *
-    * For \c GLSL_TYPE_FUNCTION, it is the number of parameters to the
-    * function.  The return value from a function is implicitly the first
-    * parameter.  The types of the parameters are stored in
-    * \c fields.parameters (below).
     */
    unsigned length;
 
diff --git a/src/glsl/ir_function.cpp b/src/glsl/ir_function.cpp
index dfdec144b2..8db70119ec 100644
--- a/src/glsl/ir_function.cpp
+++ b/src/glsl/ir_function.cpp
@@ -70,7 +70,6 @@ type_compare(const glsl_type *a, const glsl_type *b)
        */
       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: