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-rw-r--r--src/mesa/main/accum.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mesa/main/accum.c b/src/mesa/main/accum.c
index 2f7375bd3a..a6e422640c 100644
--- a/src/mesa/main/accum.c
+++ b/src/mesa/main/accum.c
@@ -76,7 +76,9 @@ _mesa_Accum( GLenum op, GLfloat value )
}
if (ctx->DrawBuffer != ctx->ReadBuffer) {
- /* See GLX_SGI_make_current_read or WGL_ARB_make_current_read */
+ /* See GLX_SGI_make_current_read or WGL_ARB_make_current_read,
+ * or GL_EXT_framebuffer_blit.
+ */
_mesa_error(ctx, GL_INVALID_OPERATION,
"glAccum(different read/draw buffers)");
return;