From: Brian <brian.paul@tungstengraphics.com>
Date: Fri, 25 Jan 2008 01:20:07 +0000 (-0700)
Subject: Cell: insert dummy field into cell_command_render struct to work around apparent... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=547e52f4a04f39d5a96bf5b1ebe97c83b9219dab;p=mesa.git

Cell: insert dummy field into cell_command_render struct to work around apparent compiler bug

Without this dummy field, it seems the SPU code in cmd_render() gets a bogus
value when dereferencing render->num_indices, sometimes.
This showed up as missing tries in gears.c in the first frame rendered.
Using spu-gcc version 4.1.1, Cell SDK 2.1
---

diff --git a/src/mesa/pipe/cell/common.h b/src/mesa/pipe/cell/common.h
index cd2b61e6e94..b9a00ccbb5f 100644
--- a/src/mesa/pipe/cell/common.h
+++ b/src/mesa/pipe/cell/common.h
@@ -104,6 +104,7 @@ struct cell_command_render
    uint prim_type;
    uint num_verts;
    uint vertex_size;  /**< bytes per vertex */
+   uint dummy;       /* XXX this dummy field works around a compiler bug */
    uint num_indexes;
    const void *vertex_data;
    const ushort *index_data;