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softpipe: use 64-bit arithmetic in softpipe_resource_layout()

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To avoid 32-bit integer overflow for large textures.  Note: we're
already doing this in llvmpipe.

Cc: "10.0" "10.1" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
This commit is contained in:
Brian Paul
2014-03-01 12:14:15 -07:00
parent 070036ca39
commit 465b2c42bc
1 changed files with 3 additions and 3 deletions
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src/gallium/drivers/softpipe/sp_texture.c
+3 -3
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@@ -60,7 +60,7 @@ softpipe_resource_layout(struct pipe_screen *screen,
unsigned width = pt->width0;
unsigned height = pt->height0;
unsigned depth = pt->depth0;
unsigned buffer_size = 0;
uint64_t buffer_size = 0;
for (level = 0; level <= pt->last_level; level++) {
unsigned slices;
@@ -76,8 +76,8 @@ softpipe_resource_layout(struct pipe_screen *screen,
spr->level_offset[level] = buffer_size;
buffer_size += (util_format_get_nblocksy(pt->format, height) *
slices * spr->stride[level]);
buffer_size += (uint64_t) util_format_get_nblocksy(pt->format, height) *
slices * spr->stride[level];
width = u_minify(width, 1);
height = u_minify(height, 1);