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-rw-r--r--mesalib/src/mesa/main/texcompress_etc_tmp.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/texcompress_etc_tmp.h b/mesalib/src/mesa/main/texcompress_etc_tmp.h
index 5c8c6decf..8bbb2cde8 100644
--- a/mesalib/src/mesa/main/texcompress_etc_tmp.h
+++ b/mesalib/src/mesa/main/texcompress_etc_tmp.h
@@ -134,3 +134,37 @@ TAG(etc1_fetch_texel)(const struct TAG(etc1_block) *block,
dst[1] = TAG(etc1_clamp)(base_color[1], modifier);
dst[2] = TAG(etc1_clamp)(base_color[2], modifier);
}
+
+static void
+etc1_unpack_rgba8888(uint8_t *dst_row,
+ unsigned dst_stride,
+ const uint8_t *src_row,
+ unsigned src_stride,
+ unsigned width,
+ unsigned height)
+{
+ const unsigned bw = 4, bh = 4, bs = 8, comps = 4;
+ struct etc1_block block;
+ unsigned x, y, i, j;
+
+ for (y = 0; y < height; y += bh) {
+ const uint8_t *src = src_row;
+
+ for (x = 0; x < width; x+= bw) {
+ etc1_parse_block(&block, src);
+
+ for (j = 0; j < bh; j++) {
+ uint8_t *dst = dst_row + (y + j) * dst_stride + x * comps;
+ for (i = 0; i < bw; i++) {
+ etc1_fetch_texel(&block, i, j, dst);
+ dst[3] = 255;
+ dst += comps;
+ }
+ }
+
+ src += bs;
+ }
+
+ src_row += src_stride;
+ }
+}