src/gallium/auxiliary/util/u_format_other.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  18  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  19  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "u_math.h"
  30 #include "u_format_other.h"
  31 #include "../../../mesa/main/rgb9e5.h"
  32
  33
  34 void
  35 util_format_r9g9b9e5_float_unpack_rgba_float(float *dst_row, unsigned dst_stride,
  36                                         const uint8_t *src_row, unsigned src_stride,
  37                                         unsigned width, unsigned height)
  38 {
  39    unsigned x, y;
  40    for(y = 0; y < height; y += 1) {
  41       float *dst = dst_row;
  42       const uint8_t *src = src_row;
  43       for(x = 0; x < width; x += 1) {
  44          uint32_t value = *(const uint32_t *)src;
  45 #ifdef PIPE_ARCH_BIG_ENDIAN
  46          value = util_bswap32(value);
  47 #endif
  48          rgb9e5_to_float3(value, dst);
  49          dst[3] = 1; /* a */
  50          src += 4;
  51          dst += 4;
  52       }
  53       src_row += src_stride;
  54       dst_row += dst_stride/sizeof(*dst_row);
  55    }
  56 }
  57
  58 void
  59 util_format_r9g9b9e5_float_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
  60                                       const float *src_row, unsigned src_stride,
  61                                       unsigned width, unsigned height)
  62 {
  63    unsigned x, y;
  64    for(y = 0; y < height; y += 1) {
  65       const float *src = src_row;
  66       uint8_t *dst = dst_row;
  67       for(x = 0; x < width; x += 1) {
  68          uint32_t value = float3_to_rgb9e5(src);
  69 #ifdef PIPE_ARCH_BIG_ENDIAN
  70          value = util_bswap32(value);
  71 #endif
  72          *(uint32_t *)dst = value;
  73          src += 4;
  74          dst += 4;
  75       }
  76       dst_row += dst_stride;
  77       src_row += src_stride/sizeof(*src_row);
  78    }
  79 }
  80
  81 void
  82 util_format_r9g9b9e5_float_fetch_rgba_float(float *dst, const uint8_t *src,
  83                                        unsigned i, unsigned j)
  84 {
  85    uint32_t value = *(const uint32_t *)src;
  86 #ifdef PIPE_ARCH_BIG_ENDIAN
  87    value = util_bswap32(value);
  88 #endif
  89    rgb9e5_to_float3(value, dst);
  90    dst[3] = 1; /* a */
  91 }
  92
  93
  94 void
  95 util_format_r9g9b9e5_float_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
  96                                          const uint8_t *src_row, unsigned src_stride,
  97                                          unsigned width, unsigned height)
  98 {
  99    unsigned x, y;
 100    float p[3];
 101    for(y = 0; y < height; y += 1) {
 102       uint8_t *dst = dst_row;
 103       const uint8_t *src = src_row;
 104       for(x = 0; x < width; x += 1) {
 105          uint32_t value = *(const uint32_t *)src;
 106 #ifdef PIPE_ARCH_BIG_ENDIAN
 107          value = util_bswap32(value);
 108 #endif
 109          rgb9e5_to_float3(value, p);
 110          dst[0] = float_to_ubyte(p[0]); /* r */
 111          dst[1] = float_to_ubyte(p[1]); /* g */
 112          dst[2] = float_to_ubyte(p[2]); /* b */
 113          dst[3] = 255; /* a */
 114          src += 4;
 115          dst += 4;
 116       }
 117       src_row += src_stride;
 118       dst_row += dst_stride/sizeof(*dst_row);
 119    }
 120 }
 121
 122
 123 void
 124 util_format_r9g9b9e5_float_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 125                                        const uint8_t *src_row, unsigned src_stride,
 126                                        unsigned width, unsigned height)
 127 {
 128    unsigned x, y;
 129    float p[3];
 130    for(y = 0; y < height; y += 1) {
 131       const uint8_t *src = src_row;
 132       uint8_t *dst = dst_row;
 133       for(x = 0; x < width; x += 1) {
 134          uint32_t value;
 135          p[0] = ubyte_to_float(src[0]);
 136          p[1] = ubyte_to_float(src[1]);
 137          p[2] = ubyte_to_float(src[2]);
 138          value = float3_to_rgb9e5(p);
 139 #ifdef PIPE_ARCH_BIG_ENDIAN
 140          value = util_bswap32(value);
 141 #endif
 142          *(uint32_t *)dst = value;
 143          src += 4;
 144          dst += 4;
 145       }
 146       dst_row += dst_stride;
 147       src_row += src_stride/sizeof(*src_row);
 148    }
 149 }
 150
 151
 152 void
 153 util_format_r1_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 154                                   const uint8_t *src_row, unsigned src_stride,
 155                                   unsigned width, unsigned height)
 156 {
 157
 158 }
 159
 160
 161 void
 162 util_format_r1_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 163                                 const float *src_row, unsigned src_stride,
 164                                 unsigned width, unsigned height)
 165 {
 166
 167 }
 168
 169
 170 void
 171 util_format_r1_unorm_fetch_rgba_float(float *dst, const uint8_t *src,
 172                                  unsigned i, unsigned j)
 173 {
 174
 175 }
 176
 177
 178 void
 179 util_format_r1_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 180                                    const uint8_t *src_row, unsigned src_stride,
 181                                    unsigned width, unsigned height)
 182 {
 183
 184 }
 185
 186
 187 void
 188 util_format_r1_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 189                                  const uint8_t *src_row, unsigned src_stride,
 190                                  unsigned width, unsigned height)
 191 {
 192 }
 193
 194
 195 /*
 196  * PIPE_FORMAT_R8G8Bx_SNORM
 197  *
 198  * A.k.a. D3DFMT_CxV8U8
 199  */
 200
 201 static uint8_t
 202 r8g8bx_derive(int16_t r, int16_t g)
 203 {
 204    /* Derive blue from red and green components.
 205     * Apparently, we must always use integers to perform calculations,
 206     * otherwise the results won't match D3D's CxV8U8 definition.
 207     */
 208    return (uint8_t)sqrtf(0x7f * 0x7f - r * r - g * g) * 0xff / 0x7f;
 209 }
 210
 211 void
 212 util_format_r8g8bx_snorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 213                                       const uint8_t *src_row, unsigned src_stride,
 214                                       unsigned width, unsigned height)
 215 {
 216    unsigned x, y;
 217
 218    for(y = 0; y < height; y += 1) {
 219       float *dst = dst_row;
 220       const uint16_t *src = (const uint16_t *)src_row;
 221       for(x = 0; x < width; x += 1) {
 222          uint16_t value = *src++;
 223          int16_t r, g;
 224
 225 #ifdef PIPE_ARCH_BIG_ENDIAN
 226          value = util_bswap32(value);
 227 #endif
 228
 229          r = ((int16_t)(value << 8)) >> 8;
 230          g = ((int16_t)(value << 0)) >> 8;
 231
 232          dst[0] = (float)(r * (1.0f/0x7f)); /* r */
 233          dst[1] = (float)(g * (1.0f/0x7f)); /* g */
 234          dst[2] = r8g8bx_derive(r, g) * (1.0f/0xff); /* b */
 235          dst[3] = 1.0f; /* a */
 236          dst += 4;
 237       }
 238       src_row += src_stride;
 239       dst_row += dst_stride/sizeof(*dst_row);
 240    }
 241 }
 242
 243
 244 void
 245 util_format_r8g8bx_snorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 246                                        const uint8_t *src_row, unsigned src_stride,
 247                                        unsigned width, unsigned height)
 248 {
 249    unsigned x, y;
 250    for(y = 0; y < height; y += 1) {
 251       uint8_t *dst = dst_row;
 252       const uint16_t *src = (const uint16_t *)src_row;
 253       for(x = 0; x < width; x += 1) {
 254          uint16_t value = *src++;
 255          int16_t r, g;
 256
 257 #ifdef PIPE_ARCH_BIG_ENDIAN
 258          value = util_bswap32(value);
 259 #endif
 260
 261          r = ((int16_t)(value << 8)) >> 8;
 262          g = ((int16_t)(value << 0)) >> 8;
 263
 264          dst[0] = (uint8_t)(((uint16_t)MAX2(r, 0)) * 0xff / 0x7f); /* r */
 265          dst[1] = (uint8_t)(((uint16_t)MAX2(g, 0)) * 0xff / 0x7f); /* g */
 266          dst[2] = r8g8bx_derive(r, g); /* b */
 267          dst[3] = 255; /* a */
 268          dst += 4;
 269       }
 270       src_row += src_stride;
 271       dst_row += dst_stride/sizeof(*dst_row);
 272    }
 273 }
 274
 275
 276 void
 277 util_format_r8g8bx_snorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 278                                     const float *src_row, unsigned src_stride,
 279                                     unsigned width, unsigned height)
 280 {
 281    unsigned x, y;
 282    for(y = 0; y < height; y += 1) {
 283       const float *src = src_row;
 284       uint16_t *dst = (uint16_t *)dst_row;
 285       for(x = 0; x < width; x += 1) {
 286          uint16_t value = 0;
 287
 288          value |= (uint16_t)(((int8_t)(CLAMP(src[0], -1, 1) * 0x7f)) & 0xff) ;
 289          value |= (uint16_t)((((int8_t)(CLAMP(src[1], -1, 1) * 0x7f)) & 0xff) << 8) ;
 290
 291 #ifdef PIPE_ARCH_BIG_ENDIAN
 292          value = util_bswap32(value);
 293 #endif
 294
 295          *dst++ = value;
 296
 297          src += 4;
 298       }
 299       dst_row += dst_stride;
 300       src_row += src_stride/sizeof(*src_row);
 301    }
 302 }
 303
 304
 305 void
 306 util_format_r8g8bx_snorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 307                                      const uint8_t *src_row, unsigned src_stride,
 308                                      unsigned width, unsigned height)
 309 {
 310    unsigned x, y;
 311
 312    for(y = 0; y < height; y += 1) {
 313       const uint8_t *src = src_row;
 314       uint16_t *dst = (uint16_t *)dst_row;
 315       for(x = 0; x < width; x += 1) {
 316          uint16_t value = 0;
 317
 318          value |= src[0] >> 1;
 319          value |= (src[1] >> 1) << 8;
 320
 321 #ifdef PIPE_ARCH_BIG_ENDIAN
 322          value = util_bswap32(value);
 323 #endif
 324
 325          *dst++ = value;
 326
 327          src += 4;
 328       }
 329       dst_row += dst_stride;
 330       src_row += src_stride/sizeof(*src_row);
 331    }
 332 }
 333
 334
 335 void
 336 util_format_r8g8bx_snorm_fetch_rgba_float(float *dst, const uint8_t *src,
 337                                      unsigned i, unsigned j)
 338 {
 339    uint16_t value = *(const uint16_t *)src;
 340    int16_t r, g;
 341
 342 #ifdef PIPE_ARCH_BIG_ENDIAN
 343    value = util_bswap32(value);
 344 #endif
 345
 346    r = ((int16_t)(value << 8)) >> 8;
 347    g = ((int16_t)(value << 0)) >> 8;
 348
 349    dst[0] = r * (1.0f/0x7f); /* r */
 350    dst[1] = g * (1.0f/0x7f); /* g */
 351    dst[2] = r8g8bx_derive(r, g) * (1.0f/0xff); /* b */
 352    dst[3] = 1.0f; /* a */
 353 }