From dbd0fa920effdceacec34fa0d5ae9ab7a2f09614 Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Tue, 27 Sep 2005 16:10:49 +0000
Subject: tweak glAccum error checking

---
 src/mesa/main/accum.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/mesa/main/accum.c b/src/mesa/main/accum.c
index 9a32481c931..76821761833 100644
--- a/src/mesa/main/accum.c
+++ b/src/mesa/main/accum.c
@@ -58,11 +58,6 @@ _mesa_Accum( GLenum op, GLfloat value )
    GLuint xpos, ypos, width, height;
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
-   if (ctx->Visual.accumRedBits == 0 || ctx->DrawBuffer != ctx->ReadBuffer) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glAccum");
-      return;
-   }
-
    switch (op) {
    case GL_ADD:
    case GL_MULT:
@@ -76,6 +71,11 @@ _mesa_Accum( GLenum op, GLfloat value )
       return;
    }
 
+   if (ctx->Visual.accumRedBits == 0) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glAccum(no accum buffer)");
+      return;
+   }
+
    if (ctx->DrawBuffer != ctx->ReadBuffer) {
       /* See GLX_SGI_make_current_read or WGL_ARB_make_current_read */
       _mesa_error(ctx, GL_INVALID_OPERATION,
-- 
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