From 5a49e84fcd858a1ad9c0ad839ccbe93504593cd0 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Tue, 8 Jan 2008 16:20:28 -0800
Subject: [PATCH] [965] Clarify a bit of index buffer upload code.

---
 src/mesa/drivers/dri/i965/brw_draw_upload.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/brw_draw_upload.c b/src/mesa/drivers/dri/i965/brw_draw_upload.c
index b0042a5449d..8c4e1bd5690 100644
--- a/src/mesa/drivers/dri/i965/brw_draw_upload.c
+++ b/src/mesa/drivers/dri/i965/brw_draw_upload.c
@@ -583,7 +583,10 @@ void brw_upload_indices( struct brw_context *brw,
 				 index_buffer->ptr,
 				 bufferobj);
    } else {
-       if (((1 << get_index_type(index_buffer->type)) - 1) & offset) {
+      /* If the index buffer isn't aligned to its element size, we have to
+       * rebase it into a temporary.
+       */
+       if ((get_size(index_buffer->type) - 1) & offset) {
            struct gl_buffer_object *vbo;
            GLuint voffset;
            GLubyte *map = ctx->Driver.MapBuffer(ctx,
-- 
2.30.2