src/gallium/auxiliary/util/u_format_other.c

   1 /**************************************************************************
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   3  * Copyright 2010 VMware, Inc.
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  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 "u_format_rgb9e5.h"
  32 #include "u_format_r11g11b10f.h"
  33
  34
  35 void
  36 util_format_r9g9b9e5_float_unpack_rgba_float(float *dst_row, unsigned dst_stride,
  37                                         const uint8_t *src_row, unsigned src_stride,
  38                                         unsigned width, unsigned height)
  39 {
  40    unsigned x, y;
  41    for(y = 0; y < height; y += 1) {
  42       float *dst = dst_row;
  43       const uint8_t *src = src_row;
  44       for(x = 0; x < width; x += 1) {
  45          uint32_t value = *(const uint32_t *)src;
  46 #ifdef PIPE_ARCH_BIG_ENDIAN
  47          value = util_bswap32(value);
  48 #endif
  49          rgb9e5_to_float3(value, dst);
  50          dst[3] = 1; /* a */
  51          src += 4;
  52          dst += 4;
  53       }
  54       src_row += src_stride;
  55       dst_row += dst_stride/sizeof(*dst_row);
  56    }
  57 }
  58
  59 void
  60 util_format_r9g9b9e5_float_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
  61                                       const float *src_row, unsigned src_stride,
  62                                       unsigned width, unsigned height)
  63 {
  64    unsigned x, y;
  65    for(y = 0; y < height; y += 1) {
  66       const float *src = src_row;
  67       uint8_t *dst = dst_row;
  68       for(x = 0; x < width; x += 1) {
  69          uint32_t value = float3_to_rgb9e5(src);
  70 #ifdef PIPE_ARCH_BIG_ENDIAN
  71          value = util_bswap32(value);
  72 #endif
  73          *(uint32_t *)dst = value;
  74          src += 4;
  75          dst += 4;
  76       }
  77       dst_row += dst_stride;
  78       src_row += src_stride/sizeof(*src_row);
  79    }
  80 }
  81
  82 void
  83 util_format_r9g9b9e5_float_fetch_rgba_float(float *dst, const uint8_t *src,
  84                                        unsigned i, unsigned j)
  85 {
  86    uint32_t value = *(const uint32_t *)src;
  87 #ifdef PIPE_ARCH_BIG_ENDIAN
  88    value = util_bswap32(value);
  89 #endif
  90    rgb9e5_to_float3(value, dst);
  91    dst[3] = 1; /* a */
  92 }
  93
  94
  95 void
  96 util_format_r9g9b9e5_float_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
  97                                          const uint8_t *src_row, unsigned src_stride,
  98                                          unsigned width, unsigned height)
  99 {
 100    unsigned x, y;
 101    float p[3];
 102    for(y = 0; y < height; y += 1) {
 103       uint8_t *dst = dst_row;
 104       const uint8_t *src = src_row;
 105       for(x = 0; x < width; x += 1) {
 106          uint32_t value = *(const uint32_t *)src;
 107 #ifdef PIPE_ARCH_BIG_ENDIAN
 108          value = util_bswap32(value);
 109 #endif
 110          rgb9e5_to_float3(value, p);
 111          dst[0] = float_to_ubyte(p[0]); /* r */
 112          dst[1] = float_to_ubyte(p[1]); /* g */
 113          dst[2] = float_to_ubyte(p[2]); /* b */
 114          dst[3] = 255; /* a */
 115          src += 4;
 116          dst += 4;
 117       }
 118       src_row += src_stride;
 119       dst_row += dst_stride/sizeof(*dst_row);
 120    }
 121 }
 122
 123
 124 void
 125 util_format_r9g9b9e5_float_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 126                                        const uint8_t *src_row, unsigned src_stride,
 127                                        unsigned width, unsigned height)
 128 {
 129    unsigned x, y;
 130    float p[3];
 131    for(y = 0; y < height; y += 1) {
 132       const uint8_t *src = src_row;
 133       uint8_t *dst = dst_row;
 134       for(x = 0; x < width; x += 1) {
 135          uint32_t value;
 136          p[0] = ubyte_to_float(src[0]);
 137          p[1] = ubyte_to_float(src[1]);
 138          p[2] = ubyte_to_float(src[2]);
 139          value = float3_to_rgb9e5(p);
 140 #ifdef PIPE_ARCH_BIG_ENDIAN
 141          value = util_bswap32(value);
 142 #endif
 143          *(uint32_t *)dst = value;
 144          src += 4;
 145          dst += 4;
 146       }
 147       dst_row += dst_stride;
 148       src_row += src_stride/sizeof(*src_row);
 149    }
 150 }
 151
 152
 153 void
 154 util_format_r11g11b10_float_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 155                                         const uint8_t *src_row, unsigned src_stride,
 156                                         unsigned width, unsigned height)
 157 {
 158    unsigned x, y;
 159    for(y = 0; y < height; y += 1) {
 160       float *dst = dst_row;
 161       const uint8_t *src = src_row;
 162       for(x = 0; x < width; x += 1) {
 163          uint32_t value = *(const uint32_t *)src;
 164 #ifdef PIPE_ARCH_BIG_ENDIAN
 165          value = util_bswap32(value);
 166 #endif
 167          r11g11b10f_to_float3(value, dst);
 168          dst[3] = 1; /* a */
 169          src += 4;
 170          dst += 4;
 171       }
 172       src_row += src_stride;
 173       dst_row += dst_stride/sizeof(*dst_row);
 174    }
 175 }
 176
 177 void
 178 util_format_r11g11b10_float_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 179                                       const float *src_row, unsigned src_stride,
 180                                       unsigned width, unsigned height)
 181 {
 182    unsigned x, y;
 183    for(y = 0; y < height; y += 1) {
 184       const float *src = src_row;
 185       uint8_t *dst = dst_row;
 186       for(x = 0; x < width; x += 1) {
 187          uint32_t value = float3_to_r11g11b10f(src);
 188 #ifdef PIPE_ARCH_BIG_ENDIAN
 189          value = util_bswap32(value);
 190 #endif
 191          *(uint32_t *)dst = value;
 192          src += 4;
 193          dst += 4;
 194       }
 195       dst_row += dst_stride;
 196       src_row += src_stride/sizeof(*src_row);
 197    }
 198 }
 199
 200 void
 201 util_format_r11g11b10_float_fetch_rgba_float(float *dst, const uint8_t *src,
 202                                        unsigned i, unsigned j)
 203 {
 204    uint32_t value = *(const uint32_t *)src;
 205 #ifdef PIPE_ARCH_BIG_ENDIAN
 206    value = util_bswap32(value);
 207 #endif
 208    r11g11b10f_to_float3(value, dst);
 209    dst[3] = 1; /* a */
 210 }
 211
 212
 213 void
 214 util_format_r11g11b10_float_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 215                                          const uint8_t *src_row, unsigned src_stride,
 216                                          unsigned width, unsigned height)
 217 {
 218    unsigned x, y;
 219    float p[3];
 220    for(y = 0; y < height; y += 1) {
 221       uint8_t *dst = dst_row;
 222       const uint8_t *src = src_row;
 223       for(x = 0; x < width; x += 1) {
 224          uint32_t value = *(const uint32_t *)src;
 225 #ifdef PIPE_ARCH_BIG_ENDIAN
 226          value = util_bswap32(value);
 227 #endif
 228          r11g11b10f_to_float3(value, p);
 229          dst[0] = float_to_ubyte(p[0]); /* r */
 230          dst[1] = float_to_ubyte(p[1]); /* g */
 231          dst[2] = float_to_ubyte(p[2]); /* b */
 232          dst[3] = 255; /* a */
 233          src += 4;
 234          dst += 4;
 235       }
 236       src_row += src_stride;
 237       dst_row += dst_stride/sizeof(*dst_row);
 238    }
 239 }
 240
 241
 242 void
 243 util_format_r11g11b10_float_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 244                                        const uint8_t *src_row, unsigned src_stride,
 245                                        unsigned width, unsigned height)
 246 {
 247    unsigned x, y;
 248    float p[3];
 249    for(y = 0; y < height; y += 1) {
 250       const uint8_t *src = src_row;
 251       uint8_t *dst = dst_row;
 252       for(x = 0; x < width; x += 1) {
 253          uint32_t value;
 254          p[0] = ubyte_to_float(src[0]);
 255          p[1] = ubyte_to_float(src[1]);
 256          p[2] = ubyte_to_float(src[2]);
 257          value = float3_to_r11g11b10f(p);
 258 #ifdef PIPE_ARCH_BIG_ENDIAN
 259          value = util_bswap32(value);
 260 #endif
 261          *(uint32_t *)dst = value;
 262          src += 4;
 263          dst += 4;
 264       }
 265       dst_row += dst_stride;
 266       src_row += src_stride/sizeof(*src_row);
 267    }
 268 }
 269
 270
 271 void
 272 util_format_r1_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 273                                   const uint8_t *src_row, unsigned src_stride,
 274                                   unsigned width, unsigned height)
 275 {
 276
 277 }
 278
 279
 280 void
 281 util_format_r1_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 282                                 const float *src_row, unsigned src_stride,
 283                                 unsigned width, unsigned height)
 284 {
 285
 286 }
 287
 288
 289 void
 290 util_format_r1_unorm_fetch_rgba_float(float *dst, const uint8_t *src,
 291                                  unsigned i, unsigned j)
 292 {
 293
 294 }
 295
 296
 297 void
 298 util_format_r1_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 299                                    const uint8_t *src_row, unsigned src_stride,
 300                                    unsigned width, unsigned height)
 301 {
 302
 303 }
 304
 305
 306 void
 307 util_format_r1_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 308                                  const uint8_t *src_row, unsigned src_stride,
 309                                  unsigned width, unsigned height)
 310 {
 311 }
 312
 313
 314 /*
 315  * PIPE_FORMAT_R8G8Bx_SNORM
 316  *
 317  * A.k.a. D3DFMT_CxV8U8
 318  */
 319
 320 static uint8_t
 321 r8g8bx_derive(int16_t r, int16_t g)
 322 {
 323    /* Derive blue from red and green components.
 324     * Apparently, we must always use integers to perform calculations,
 325     * otherwise the results won't match D3D's CxV8U8 definition.
 326     */
 327    return (uint8_t)sqrtf(0x7f * 0x7f - r * r - g * g) * 0xff / 0x7f;
 328 }
 329
 330 void
 331 util_format_r8g8bx_snorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 332                                       const uint8_t *src_row, unsigned src_stride,
 333                                       unsigned width, unsigned height)
 334 {
 335    unsigned x, y;
 336
 337    for(y = 0; y < height; y += 1) {
 338       float *dst = dst_row;
 339       const uint16_t *src = (const uint16_t *)src_row;
 340       for(x = 0; x < width; x += 1) {
 341          uint16_t value = *src++;
 342          int16_t r, g;
 343
 344 #ifdef PIPE_ARCH_BIG_ENDIAN
 345          value = util_bswap32(value);
 346 #endif
 347
 348          r = ((int16_t)(value << 8)) >> 8;
 349          g = ((int16_t)(value << 0)) >> 8;
 350
 351          dst[0] = (float)(r * (1.0f/0x7f)); /* r */
 352          dst[1] = (float)(g * (1.0f/0x7f)); /* g */
 353          dst[2] = r8g8bx_derive(r, g) * (1.0f/0xff); /* b */
 354          dst[3] = 1.0f; /* a */
 355          dst += 4;
 356       }
 357       src_row += src_stride;
 358       dst_row += dst_stride/sizeof(*dst_row);
 359    }
 360 }
 361
 362
 363 void
 364 util_format_r8g8bx_snorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 365                                        const uint8_t *src_row, unsigned src_stride,
 366                                        unsigned width, unsigned height)
 367 {
 368    unsigned x, y;
 369    for(y = 0; y < height; y += 1) {
 370       uint8_t *dst = dst_row;
 371       const uint16_t *src = (const uint16_t *)src_row;
 372       for(x = 0; x < width; x += 1) {
 373          uint16_t value = *src++;
 374          int16_t r, g;
 375
 376 #ifdef PIPE_ARCH_BIG_ENDIAN
 377          value = util_bswap32(value);
 378 #endif
 379
 380          r = ((int16_t)(value << 8)) >> 8;
 381          g = ((int16_t)(value << 0)) >> 8;
 382
 383          dst[0] = (uint8_t)(((uint16_t)MAX2(r, 0)) * 0xff / 0x7f); /* r */
 384          dst[1] = (uint8_t)(((uint16_t)MAX2(g, 0)) * 0xff / 0x7f); /* g */
 385          dst[2] = r8g8bx_derive(r, g); /* b */
 386          dst[3] = 255; /* a */
 387          dst += 4;
 388       }
 389       src_row += src_stride;
 390       dst_row += dst_stride/sizeof(*dst_row);
 391    }
 392 }
 393
 394
 395 void
 396 util_format_r8g8bx_snorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 397                                     const float *src_row, unsigned src_stride,
 398                                     unsigned width, unsigned height)
 399 {
 400    unsigned x, y;
 401    for(y = 0; y < height; y += 1) {
 402       const float *src = src_row;
 403       uint16_t *dst = (uint16_t *)dst_row;
 404       for(x = 0; x < width; x += 1) {
 405          uint16_t value = 0;
 406
 407          value |= (uint16_t)(((int8_t)(CLAMP(src[0], -1, 1) * 0x7f)) & 0xff) ;
 408          value |= (uint16_t)((((int8_t)(CLAMP(src[1], -1, 1) * 0x7f)) & 0xff) << 8) ;
 409
 410 #ifdef PIPE_ARCH_BIG_ENDIAN
 411          value = util_bswap32(value);
 412 #endif
 413
 414          *dst++ = value;
 415
 416          src += 4;
 417       }
 418       dst_row += dst_stride;
 419       src_row += src_stride/sizeof(*src_row);
 420    }
 421 }
 422
 423
 424 void
 425 util_format_r8g8bx_snorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 426                                      const uint8_t *src_row, unsigned src_stride,
 427                                      unsigned width, unsigned height)
 428 {
 429    unsigned x, y;
 430
 431    for(y = 0; y < height; y += 1) {
 432       const uint8_t *src = src_row;
 433       uint16_t *dst = (uint16_t *)dst_row;
 434       for(x = 0; x < width; x += 1) {
 435          uint16_t value = 0;
 436
 437          value |= src[0] >> 1;
 438          value |= (src[1] >> 1) << 8;
 439
 440 #ifdef PIPE_ARCH_BIG_ENDIAN
 441          value = util_bswap32(value);
 442 #endif
 443
 444          *dst++ = value;
 445
 446          src += 4;
 447       }
 448       dst_row += dst_stride;
 449       src_row += src_stride/sizeof(*src_row);
 450    }
 451 }
 452
 453
 454 void
 455 util_format_r8g8bx_snorm_fetch_rgba_float(float *dst, const uint8_t *src,
 456                                      unsigned i, unsigned j)
 457 {
 458    uint16_t value = *(const uint16_t *)src;
 459    int16_t r, g;
 460
 461 #ifdef PIPE_ARCH_BIG_ENDIAN
 462    value = util_bswap32(value);
 463 #endif
 464
 465    r = ((int16_t)(value << 8)) >> 8;
 466    g = ((int16_t)(value << 0)) >> 8;
 467
 468    dst[0] = r * (1.0f/0x7f); /* r */
 469    dst[1] = g * (1.0f/0x7f); /* g */
 470    dst[2] = r8g8bx_derive(r, g) * (1.0f/0xff); /* b */
 471    dst[3] = 1.0f; /* a */
 472 }