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llvmpipe: protect from doing FB fetch of missing buffers 

Signed-off-by: Pavel Asyutchenko <sventeam@yandex.ru>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13252>
This commit is contained in:
Pavel Asyutchenko 2021-10-07 20:57:16 +03:00 committed by Marge Bot
parent 3ebd6498c4
commit 2b3a020928
1 changed files with 5 additions and 0 deletions
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5
src/gallium/drivers/llvmpipe/lp_state_fs.c
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@ -470,6 +470,11 @@ static void fs_fb_fetch(const struct lp_build_fs_iface *iface,
LLVMValueRef dst[4 * 4];
enum pipe_format cbuf_format = key->cbuf_format[cbuf];
const struct util_format_description* out_format_desc = util_format_description(cbuf_format);
if (out_format_desc->format == PIPE_FORMAT_NONE) {
result[0] = result[1] = result[2] = result[3] = bld->undef;
return;
}
struct lp_type dst_type;
unsigned block_size = bld->type.length;
unsigned block_height = key->resource_1d ? 1 : 2;