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drisw: fix image stride calculation for 16-bit. 

If you ran g-s in 16-bpp we'd do a bunch of memory corruption.

now it just misrenders for some other reasons.

applies to stable.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Dave Airlie 2012-03-22 11:56:43 +00:00 committed by Dave Airlie
parent ba3a4d79a7
commit d6c5ad52b2
1 changed files with 3 additions and 3 deletions
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6
src/gallium/state_trackers/dri/sw/drisw.c
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@ -253,6 +253,7 @@ drisw_update_tex_buffer(struct dri_drawable *drawable,
char *map;
int x, y, w, h;
int ximage_stride, line;
int cpp = util_format_get_blocksize(res->format);
get_drawable_info(dPriv, &x, &y, &w, &h);
@ -265,9 +266,8 @@ drisw_update_tex_buffer(struct dri_drawable *drawable,
/* Copy the Drawable content to the mapped texture buffer */
get_image(dPriv, x, y, w, h, map);
/* The pipe transfer has a pitch rounded up to the nearest 64 pixels.
We assume 32 bit pixels. */
ximage_stride = w * 4;
/* The pipe transfer has a pitch rounded up to the nearest 64 pixels. */
ximage_stride = w * cpp;
for (line = h-1; line; --line) {
memmove(&map[line * transfer->stride],
&map[line * ximage_stride],