src/gallium/auxiliary/util/u_format_latc.c

   1 /**************************************************************************
   2  *
   3  * Copyright (C) 2011 Red Hat Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included
  13  * in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  21  * OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  **************************************************************************/
  24
  25 #include <stdio.h>
  26 #include "u_math.h"
  27 #include "u_format.h"
  28 #include "u_format_rgtc.h"
  29 #include "u_format_latc.h"
  30
  31 static void u_format_unsigned_encode_rgtc_ubyte(uint8_t *blkaddr, uint8_t srccolors[4][4],
  32                                                int numxpixels, int numypixels);
  33
  34 static void u_format_unsigned_fetch_texel_rgtc(unsigned srcRowStride, const uint8_t *pixdata,
  35                                                unsigned i, unsigned j, uint8_t *value, unsigned comps);
  36
  37 static void u_format_signed_encode_rgtc_ubyte(int8_t *blkaddr, int8_t srccolors[4][4],
  38                                              int numxpixels, int numypixels);
  39
  40 static void u_format_signed_fetch_texel_rgtc(unsigned srcRowStride, const int8_t *pixdata,
  41                                                unsigned i, unsigned j, int8_t *value, unsigned comps);
  42
  43 void
  44 util_format_latc1_unorm_fetch_rgba_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j)
  45 {
  46    /* Fix warnings here: */
  47    (void) u_format_unsigned_encode_rgtc_ubyte;
  48    (void) u_format_signed_encode_rgtc_ubyte;
  49
  50    u_format_unsigned_fetch_texel_rgtc(0, src, i, j, dst, 1);
  51    dst[1] = dst[0];
  52    dst[2] = dst[0];
  53    dst[3] = 255;
  54 }
  55
  56 void
  57 util_format_latc1_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
  58 {
  59    util_format_rgtc1_unorm_unpack_rgba_8unorm(dst_row, dst_stride, src_row, src_stride, width, height);
  60 }
  61
  62 void
  63 util_format_latc1_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row,
  64                                          unsigned src_stride, unsigned width, unsigned height)
  65 {
  66    util_format_rgtc1_unorm_pack_rgba_8unorm(dst_row, dst_stride, src_row, src_stride, width, height);
  67 }
  68
  69 void
  70 util_format_latc1_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
  71 {
  72    unsigned x, y, i, j;
  73    int block_size = 8;
  74
  75    for(y = 0; y < height; y += 4) {
  76       const uint8_t *src = src_row;
  77       for(x = 0; x < width; x += 4) {
  78          for(j = 0; j < 4; ++j) {
  79             for(i = 0; i < 4; ++i) {
  80                float *dst = dst_row + (y + j)*dst_stride/sizeof(*dst_row) + (x + i)*4;
  81                uint8_t tmp_r;
  82                u_format_unsigned_fetch_texel_rgtc(0, src, i, j, &tmp_r, 1);
  83                dst[0] =
  84                dst[1] =
  85                dst[2] = ubyte_to_float(tmp_r);
  86                dst[3] = 1.0;
  87             }
  88          }
  89          src += block_size;
  90       }
  91       src_row += src_stride;
  92    }
  93 }
  94
  95 void
  96 util_format_latc1_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)
  97 {
  98    util_format_rgtc1_unorm_pack_rgba_float(dst_row, dst_stride, src_row, src_stride, width, height);
  99 }
 100
 101 void
 102 util_format_latc1_unorm_fetch_rgba_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
 103 {
 104    uint8_t tmp_r;
 105
 106    u_format_unsigned_fetch_texel_rgtc(0, src, i, j, &tmp_r, 1);
 107    dst[0] =
 108    dst[1] =
 109    dst[2] = ubyte_to_float(tmp_r);
 110    dst[3] = 1.0;
 111 }
 112
 113 void
 114 util_format_latc1_snorm_fetch_rgba_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j)
 115 {
 116    fprintf(stderr,"%s\n", __func__);
 117 }
 118
 119 void
 120 util_format_latc1_snorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
 121 {
 122    fprintf(stderr,"%s\n", __func__);
 123 }
 124
 125 void
 126 util_format_latc1_snorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
 127 {
 128    fprintf(stderr,"%s\n", __func__);
 129 }
 130
 131 void
 132 util_format_latc1_snorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)
 133 {
 134    util_format_rgtc1_snorm_pack_rgba_float(dst_row, dst_stride, src_row, src_stride, width, height);
 135 }
 136
 137 void
 138 util_format_latc1_snorm_unpack_rgba_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
 139 {
 140    unsigned x, y, i, j;
 141    int block_size = 8;
 142
 143    for(y = 0; y < height; y += 4) {
 144       const int8_t *src = (int8_t *)src_row;
 145       for(x = 0; x < width; x += 4) {
 146          for(j = 0; j < 4; ++j) {
 147             for(i = 0; i < 4; ++i) {
 148                float *dst = dst_row + (y + j)*dst_stride/sizeof(*dst_row) + (x + i)*4;
 149                int8_t tmp_r;
 150                u_format_signed_fetch_texel_rgtc(0, src, i, j, &tmp_r, 1);
 151                dst[0] =
 152                dst[1] =
 153                dst[2] = byte_to_float_tex(tmp_r);
 154                dst[3] = 1.0;
 155             }
 156          }
 157          src += block_size;
 158       }
 159       src_row += src_stride;
 160    }
 161 }
 162
 163 void
 164 util_format_latc1_snorm_fetch_rgba_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
 165 {
 166    int8_t tmp_r;
 167
 168    u_format_signed_fetch_texel_rgtc(0, (int8_t *)src, i, j, &tmp_r, 1);
 169    dst[0] =
 170    dst[1] =
 171    dst[2] = byte_to_float_tex(tmp_r);
 172    dst[3] = 1.0;
 173 }
 174
 175
 176 void
 177 util_format_latc2_unorm_fetch_rgba_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j)
 178 {
 179    u_format_unsigned_fetch_texel_rgtc(0, src, i, j, dst, 2);
 180    dst[1] = dst[0];
 181    dst[2] = dst[0];
 182    u_format_unsigned_fetch_texel_rgtc(0, src + 8, i, j, dst + 3, 2);
 183 }
 184
 185 void
 186 util_format_latc2_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
 187 {
 188    util_format_rgtc2_unorm_unpack_rgba_8unorm(dst_row, dst_stride, src_row, src_stride, width, height);
 189 }
 190
 191 void
 192 util_format_latc2_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
 193 {
 194    util_format_rgtc2_unorm_pack_rgba_8unorm(dst_row, dst_stride, src_row, src_stride, width, height);
 195 }
 196
 197 void
 198 util_format_latc2_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)
 199 {
 200    util_format_rxtc2_unorm_pack_rgba_float(dst_row, dst_stride, src_row, src_stride, width, height, 3);
 201 }
 202
 203 void
 204 util_format_latc2_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
 205 {
 206    unsigned x, y, i, j;
 207    int block_size = 16;
 208
 209    for(y = 0; y < height; y += 4) {
 210       const uint8_t *src = src_row;
 211       for(x = 0; x < width; x += 4) {
 212          for(j = 0; j < 4; ++j) {
 213             for(i = 0; i < 4; ++i) {
 214                float *dst = dst_row + (y + j)*dst_stride/sizeof(*dst_row) + (x + i)*4;
 215                uint8_t tmp_r, tmp_g;
 216                u_format_unsigned_fetch_texel_rgtc(0, src, i, j, &tmp_r, 2);
 217                u_format_unsigned_fetch_texel_rgtc(0, src + 8, i, j, &tmp_g, 2);
 218                dst[0] =
 219                dst[1] =
 220                dst[2] = ubyte_to_float(tmp_r);
 221                dst[3] = ubyte_to_float(tmp_g);
 222             }
 223          }
 224          src += block_size;
 225       }
 226       src_row += src_stride;
 227    }
 228 }
 229
 230 void
 231 util_format_latc2_unorm_fetch_rgba_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
 232 {
 233    uint8_t tmp_r, tmp_g;
 234
 235    u_format_unsigned_fetch_texel_rgtc(0, src, i, j, &tmp_r, 2);
 236    u_format_unsigned_fetch_texel_rgtc(0, src + 8, i, j, &tmp_g, 2);
 237    dst[0] =
 238    dst[1] =
 239    dst[2] = ubyte_to_float(tmp_r);
 240    dst[3] = ubyte_to_float(tmp_g);
 241 }
 242
 243
 244 void
 245 util_format_latc2_snorm_fetch_rgba_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j)
 246 {
 247    fprintf(stderr,"%s\n", __func__);
 248 }
 249
 250 void
 251 util_format_latc2_snorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
 252 {
 253    fprintf(stderr,"%s\n", __func__);
 254 }
 255
 256 void
 257 util_format_latc2_snorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
 258 {
 259    fprintf(stderr,"%s\n", __func__);
 260 }
 261
 262 void
 263 util_format_latc2_snorm_unpack_rgba_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
 264 {
 265    unsigned x, y, i, j;
 266    int block_size = 16;
 267
 268    for(y = 0; y < height; y += 4) {
 269       const int8_t *src = (int8_t *)src_row;
 270       for(x = 0; x < width; x += 4) {
 271          for(j = 0; j < 4; ++j) {
 272             for(i = 0; i < 4; ++i) {
 273                float *dst = dst_row + (y + j)*dst_stride/sizeof(*dst_row) + (x + i)*4;
 274                int8_t tmp_r, tmp_g;
 275                u_format_signed_fetch_texel_rgtc(0, src, i, j, &tmp_r, 2);
 276                u_format_signed_fetch_texel_rgtc(0, src + 8, i, j, &tmp_g, 2);
 277                dst[0] =
 278                dst[1] =
 279                dst[2] = byte_to_float_tex(tmp_r);
 280                dst[3] = byte_to_float_tex(tmp_g);
 281             }
 282          }
 283          src += block_size;
 284       }
 285       src_row += src_stride;
 286    }
 287 }
 288
 289 void
 290 util_format_latc2_snorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)
 291 {
 292    util_format_rxtc2_snorm_pack_rgba_float(dst_row, dst_stride, src_row, src_stride, width, height, 3);
 293 }
 294
 295 void
 296 util_format_latc2_snorm_fetch_rgba_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
 297 {
 298    int8_t tmp_r, tmp_g;
 299
 300    u_format_signed_fetch_texel_rgtc(0, (int8_t *)src, i, j, &tmp_r, 2);
 301    u_format_signed_fetch_texel_rgtc(0, (int8_t *)src + 8, i, j, &tmp_g, 2);
 302    dst[0] =
 303    dst[1] =
 304    dst[2] = byte_to_float_tex(tmp_r);
 305    dst[3] = byte_to_float_tex(tmp_g);
 306 }
 307
 308
 309 #define TAG(x) u_format_unsigned_##x
 310 #define TYPE uint8_t
 311 #define T_MIN 0
 312 #define T_MAX 255
 313
 314 #include "../../../mesa/main/texcompress_rgtc_tmp.h"
 315
 316 #undef TYPE
 317 #undef TAG
 318 #undef T_MIN
 319 #undef T_MAX
 320
 321
 322 #define TAG(x) u_format_signed_##x
 323 #define TYPE int8_t
 324 #define T_MIN (int8_t)-128
 325 #define T_MAX (int8_t)127
 326
 327 #include "../../../mesa/main/texcompress_rgtc_tmp.h"
 328
 329 #undef TYPE
 330 #undef TAG
 331 #undef T_MIN
 332 #undef T_MAX