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#include "pipe/p_compiler.h"
#include "util/u_debug.h"
#include "util/u_math.h"
#include "u_format_etc.h"
/* define etc1_parse_block and etc. */
#define UINT8_TYPE uint8_t
#define TAG(x) x
#include "../../../mesa/main/texcompress_etc_tmp.h"
#undef TAG
#undef UINT8_TYPE
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;
}
}
void
util_format_etc1_rgb8_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
{
assert(0);
}
void
util_format_etc1_rgb8_unpack_rgba_float(float *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++) {
float *dst = dst_row + (y + j) * dst_stride / sizeof(*dst_row) + x * comps;
uint8_t tmp[3];
for (i = 0; i < bw; i++) {
etc1_fetch_texel(&block, i, j, tmp);
dst[0] = ubyte_to_float(tmp[0]);
dst[1] = ubyte_to_float(tmp[1]);
dst[2] = ubyte_to_float(tmp[2]);
dst[3] = 1.0f;
dst += comps;
}
}
src += bs;
}
src_row += src_stride;
}
}
void
util_format_etc1_rgb8_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)
{
assert(0);
}
void
util_format_etc1_rgb8_fetch_rgba_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
{
const unsigned bw = 4, bh = 4;
struct etc1_block block;
uint8_t tmp[3];
assert(i < bw && j < bh);
etc1_parse_block(&block, src);
etc1_fetch_texel(&block, i, j, tmp);
dst[0] = ubyte_to_float(tmp[0]);
dst[1] = ubyte_to_float(tmp[1]);
dst[2] = ubyte_to_float(tmp[2]);
dst[3] = 1.0f;
}
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