From: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Date: Tue, 22 May 2012 10:44:38 +0000 (+0200)
Subject: nv50: make unaligned index buffer offsets work again
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a054fd8268876048a7ce45a2ebfc40a3dd1e8540;p=mesa.git

nv50: make unaligned index buffer offsets work again

Messed up in ef7bb281292c17b762b57779306e874704c87328.
---

diff --git a/src/gallium/drivers/nv50/nv50_vbo.c b/src/gallium/drivers/nv50/nv50_vbo.c
index 4cecdea3bfb..1875d4d6092 100644
--- a/src/gallium/drivers/nv50/nv50_vbo.c
+++ b/src/gallium/drivers/nv50/nv50_vbo.c
@@ -568,7 +568,9 @@ nv50_draw_elements(struct nv50_context *nv50, boolean shorten,
       struct nv04_resource *buf = nv04_resource(nv50->idxbuf.buffer);
       unsigned pb_start;
       unsigned pb_bytes;
-      const unsigned base = buf->offset + nv50->idxbuf.offset;
+      const unsigned base = (buf->offset + nv50->idxbuf.offset) & ~3;
+
+      start += ((buf->offset + nv50->idxbuf.offset) & 3) >> (index_size >> 1);
 
       assert(nouveau_resource_mapped_by_gpu(nv50->idxbuf.buffer));