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util: allow unpacking less than a block from dxt

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Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Acked-by: Eric Engestrom <eric@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18180>
This commit is contained in:
Erik Faye-Lund
2022-08-22 15:59:33 +02:00
committed by Marge Bot
parent 060596f1d8
commit a321d157c6
1 changed files with 4 additions and 2 deletions
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src/util/format/u_format_s3tc.c
+4 -2
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@@ -130,9 +130,11 @@ util_format_dxtn_rgb_unpack_rgba_8unorm(uint8_t *restrict dst_row, unsigned dst_
unsigned x, y, i, j;
for(y = 0; y < height; y += bh) {
const uint8_t *src = src_row;
const unsigned h = MIN2(height - y, bh);
for(x = 0; x < width; x += bw) {
for(j = 0; j < bh; ++j) {
for(i = 0; i < bw; ++i) {
const unsigned w = MIN2(width - x, bw);
for(j = 0; j < h; ++j) {
for(i = 0; i < w; ++i) {
uint8_t *dst = dst_row + (y + j)*dst_stride/sizeof(*dst_row) + (x + i)*comps;
fetch(0, src, i, j, dst);
if (srgb) {