diff options
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_format_etc.c')
-rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_format_etc.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_format_etc.c b/mesalib/src/gallium/auxiliary/util/u_format_etc.c new file mode 100644 index 000000000..7500e1ed6 --- /dev/null +++ b/mesalib/src/gallium/auxiliary/util/u_format_etc.c @@ -0,0 +1,104 @@ +#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; +} |