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gallium/util, mesa: Refactor etc1 unpack function

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Move the body of util_etc1_rgb8_unpack_rgba_unorm8 into a new function
that can be shared between gallium and dri drivers,
texcompress_etc_tmp.h:etc1_unpack_rgba8888.

CC: Chia-I <olv@lunarg.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Chad Versace <chad.versace@linux.intel.com>
This commit is contained in:
Chad Versace 2012-07-10 16:23:39 -07:00
parent 7250cd506b
commit d7458e401e
2 changed files with 35 additions and 24 deletions
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25
src/gallium/auxiliary/util/u_format_etc.c
View file

@ -13,30 +13,7 @@
void
util_format_etc1_rgb8_unpack_rgba_8unorm(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;
}
etc1_unpack_rgba8888(dst_row, dst_stride, src_row, src_stride, width, height);
}
void

34
src/mesa/main/texcompress_etc_tmp.h
View file

@ -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;
}
}