From 5498e8b9f34718aba506421988116ccb1e5e3de7 Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Sat, 13 Mar 2004 16:32:58 +0000
Subject: [PATCH] more descriptive error messages for matrix stack
 over/underflows

---
 src/mesa/main/matrix.c | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/src/mesa/main/matrix.c b/src/mesa/main/matrix.c
index 76ca28451f7..8204c258a63 100644
--- a/src/mesa/main/matrix.c
+++ b/src/mesa/main/matrix.c
@@ -10,9 +10,9 @@
 
 /*
  * Mesa 3-D graphics library
- * Version:  5.1
+ * Version:  6.1
  *
- * Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2004  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"),
@@ -234,7 +234,15 @@ _mesa_PushMatrix( void )
                   _mesa_lookup_enum_by_nr(ctx->Transform.MatrixMode));
 
    if (stack->Depth + 1 >= stack->MaxDepth) {
-      _mesa_error( ctx,  GL_STACK_OVERFLOW, "glPushMatrix" );
+      if (ctx->Transform.MatrixMode == GL_TEXTURE) {
+         _mesa_error(ctx,  GL_STACK_OVERFLOW,
+                     "glPushMatrix(mode=GL_TEXTURE, unit=%d)",
+                      ctx->Texture.CurrentUnit);
+      }
+      else {
+         _mesa_error(ctx,  GL_STACK_OVERFLOW, "glPushMatrix(mode=%s)",
+                     _mesa_lookup_enum_by_nr(ctx->Transform.MatrixMode));
+      }
       return;
    }
    _math_matrix_copy( &stack->Stack[stack->Depth + 1],
@@ -266,7 +274,15 @@ _mesa_PopMatrix( void )
                   _mesa_lookup_enum_by_nr(ctx->Transform.MatrixMode));
 
    if (stack->Depth == 0) {
-      _mesa_error( ctx,  GL_STACK_UNDERFLOW, "glPopMatrix" );
+      if (ctx->Transform.MatrixMode == GL_TEXTURE) {
+         _mesa_error(ctx,  GL_STACK_UNDERFLOW,
+                     "glPopMatrix(mode=GL_TEXTURE, unit=%d)",
+                      ctx->Texture.CurrentUnit);
+      }
+      else {
+         _mesa_error(ctx,  GL_STACK_UNDERFLOW, "glPopMatrix(mode=%s)",
+                     _mesa_lookup_enum_by_nr(ctx->Transform.MatrixMode));
+      }
       return;
    }
    stack->Depth--;
-- 
2.30.2