static inline void
util_format_dxtn_rgb_unpack_rgba_float(float *dst_row, unsigned dst_stride,
const uint8_t *src_row, unsigned src_stride,
unsigned width, unsigned height,
util_format_dxtn_fetch_t fetch,
unsigned block_size, boolean srgb)
{
unsigned x, y, i, j;
for(y = 0; y < height; y += 4) {
const uint8_t *src = src_row;
for(x = 0; x < width; x += 4) {
for(j = 0; j < 4; ++j) {
for(i = 0; i < 4; ++i) {
float *dst = dst_row + (y + j)*dst_stride/sizeof(*dst_row) + (x + i)*4;
uint8_t tmp[4];
fetch(0, src, i, j, tmp);
if (srgb) {
dst[0] = util_format_srgb_8unorm_to_linear_float(tmp[0]);
dst[1] = util_format_srgb_8unorm_to_linear_float(tmp[1]);
dst[2] = util_format_srgb_8unorm_to_linear_float(tmp[2]);
}
else {
dst[0] = ubyte_to_float(tmp[0]);
dst[1] = ubyte_to_float(tmp[1]);
dst[2] = ubyte_to_float(tmp[2]);
}
dst[3] = ubyte_to_float(tmp[3]);
}
}
src += block_size;
}
src_row += src_stride;
}
}
void
util_format_dxt5_srgba_fetch_rgba_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
{
uint8_t tmp[4];
util_format_dxt5_rgba_fetch(0, src, i, j, tmp);
dst[0] = util_format_srgb_8unorm_to_linear_float(tmp[0]);
dst[1] = util_format_srgb_8unorm_to_linear_float(tmp[1]);
dst[2] = util_format_srgb_8unorm_to_linear_float(tmp[2]);
dst[3] = ubyte_to_float(tmp[3]);
}
static void
fetch_srgba_dxt5(const GLubyte *map,
GLint rowStride, GLint i, GLint j, GLfloat *texel)
{
if (fetch_ext_rgba_dxt5) {
GLubyte tex[4];
fetch_ext_rgba_dxt5(rowStride, map, i, j, tex);
texel[RCOMP] = util_format_srgb_8unorm_to_linear_float(tex[RCOMP]);
texel[GCOMP] = util_format_srgb_8unorm_to_linear_float(tex[GCOMP]);
texel[BCOMP] = util_format_srgb_8unorm_to_linear_float(tex[BCOMP]);
texel[ACOMP] = UBYTE_TO_FLOAT(tex[ACOMP]);
}
else {
problem("srgba_dxt5");
}
}
