forked from KolibriOS/kolibrios
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
#include "pipe/p_compiler.h"
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#include "util/u_debug.h"
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#include "util/u_math.h"
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#include "u_format_etc.h"
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/* define etc1_parse_block and etc. */
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#define UINT8_TYPE uint8_t
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#define TAG(x) x
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#include "texcompress_etc_tmp.h"
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#undef TAG
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#undef UINT8_TYPE
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void
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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)
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{
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etc1_unpack_rgba8888(dst_row, dst_stride, src_row, src_stride, width, height);
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}
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void
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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)
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{
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assert(0);
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}
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void
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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)
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{
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const unsigned bw = 4, bh = 4, bs = 8, comps = 4;
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struct etc1_block block;
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unsigned x, y, i, j;
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for (y = 0; y < height; y += bh) {
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const uint8_t *src = src_row;
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for (x = 0; x < width; x+= bw) {
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etc1_parse_block(&block, src);
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for (j = 0; j < bh; j++) {
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float *dst = dst_row + (y + j) * dst_stride / sizeof(*dst_row) + x * comps;
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uint8_t tmp[3];
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for (i = 0; i < bw; i++) {
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etc1_fetch_texel(&block, i, j, tmp);
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dst[0] = ubyte_to_float(tmp[0]);
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dst[1] = ubyte_to_float(tmp[1]);
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dst[2] = ubyte_to_float(tmp[2]);
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dst[3] = 1.0f;
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dst += comps;
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}
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}
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src += bs;
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}
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src_row += src_stride;
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}
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}
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void
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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)
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{
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assert(0);
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}
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void
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util_format_etc1_rgb8_fetch_rgba_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
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{
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const unsigned bw = 4, bh = 4;
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struct etc1_block block;
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uint8_t tmp[3];
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assert(i < bw && j < bh);
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etc1_parse_block(&block, src);
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etc1_fetch_texel(&block, i, j, tmp);
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dst[0] = ubyte_to_float(tmp[0]);
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dst[1] = ubyte_to_float(tmp[1]);
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dst[2] = ubyte_to_float(tmp[2]);
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dst[3] = 1.0f;
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}
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