fix comments

[mesa.git] / src / mesa / shader / arbprogram.c

diff --git a/src/mesa/shader/arbprogram.c b/src/mesa/shader/arbprogram.c
index 89f2d20cc9a39980214d64bc15b9e8b64aafc584..91fb691038197ad0d37eafe03f371176b13e8b57 100644 (file)
--- a/src/mesa/shader/arbprogram.c
+++ b/src/mesa/shader/arbprogram.c
@@ -1,6 +1,6 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.5
+ * Version:  6.5.2
  *
  * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
  *
@@ -36,6 +36,7 @@
 #include "imports.h"
 #include "macros.h"
 #include "mtypes.h"
+#include "program.h"
 
 
 void GLAPIENTRY
@@ -101,7 +102,7 @@ _mesa_GetVertexAttribfvARB(GLuint index, GLenum pname, GLfloat *params)
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
-   if (index == 0 || index >= MAX_VERTEX_PROGRAM_ATTRIBS) {
+   if (index >= MAX_VERTEX_PROGRAM_ATTRIBS) {
       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribfvARB(index)");
       return;
    }
@@ -123,6 +124,11 @@ _mesa_GetVertexAttribfvARB(GLuint index, GLenum pname, GLfloat *params)
          params[0] = ctx->Array.ArrayObj->VertexAttrib[index].Normalized;
          break;
       case GL_CURRENT_VERTEX_ATTRIB_ARB:
+         if (index == 0) {
+            _mesa_error(ctx, GL_INVALID_OPERATION,
+                        "glGetVertexAttribfvARB(index==0)");
+            return;
+         }
          FLUSH_CURRENT(ctx, 0);
          COPY_4V(params, ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + index]);
          break;
@@ -179,6 +185,29 @@ _mesa_GetVertexAttribPointervARB(GLuint index, GLenum pname, GLvoid **pointer)
 }
 
 
+/**
+ * Determine if id names a vertex or fragment program.
+ * \note Not compiled into display lists.
+ * \note Called from both glIsProgramNV and glIsProgramARB.
+ * \param id is the program identifier
+ * \return GL_TRUE if id is a program, else GL_FALSE.
+ */
+GLboolean GLAPIENTRY
+_mesa_IsProgramARB(GLuint id)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+
+   if (id == 0)
+      return GL_FALSE;
+
+   if (_mesa_lookup_program(ctx, id))
+      return GL_TRUE;
+   else
+      return GL_FALSE;
+}
+
+
 void GLAPIENTRY
 _mesa_ProgramStringARB(GLenum target, GLenum format, GLsizei len,
                        const GLvoid *string)