src/gallium/auxiliary/util/u_format_other.c

   1 /**************************************************************************
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   3  * Copyright 2010 VMware, Inc.
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   7  * copy of this software and associated documentation files (the
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  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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  20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
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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 = util_cpu_to_le32(*(const uint32_t *)src);
  46          rgb9e5_to_float3(value, dst);
  47          dst[3] = 1; /* a */
  48          src += 4;
  49          dst += 4;
  50       }
  51       src_row += src_stride;
  52       dst_row += dst_stride/sizeof(*dst_row);
  53    }
  54 }
  55
  56 void
  57 util_format_r9g9b9e5_float_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
  58                                       const float *src_row, unsigned src_stride,
  59                                       unsigned width, unsigned height)
  60 {
  61    unsigned x, y;
  62    for(y = 0; y < height; y += 1) {
  63       const float *src = src_row;
  64       uint8_t *dst = dst_row;
  65       for(x = 0; x < width; x += 1) {
  66          uint32_t value = util_cpu_to_le32(float3_to_rgb9e5(src));
  67          *(uint32_t *)dst = value;
  68          src += 4;
  69          dst += 4;
  70       }
  71       dst_row += dst_stride;
  72       src_row += src_stride/sizeof(*src_row);
  73    }
  74 }
  75
  76 void
  77 util_format_r9g9b9e5_float_fetch_rgba_float(float *dst, const uint8_t *src,
  78                                        unsigned i, unsigned j)
  79 {
  80    uint32_t value = util_cpu_to_le32(*(const uint32_t *)src);
  81    rgb9e5_to_float3(value, dst);
  82    dst[3] = 1; /* a */
  83 }
  84
  85
  86 void
  87 util_format_r9g9b9e5_float_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
  88                                          const uint8_t *src_row, unsigned src_stride,
  89                                          unsigned width, unsigned height)
  90 {
  91    unsigned x, y;
  92    float p[3];
  93    for(y = 0; y < height; y += 1) {
  94       uint8_t *dst = dst_row;
  95       const uint8_t *src = src_row;
  96       for(x = 0; x < width; x += 1) {
  97          uint32_t value = util_cpu_to_le32(*(const uint32_t *)src);
  98          rgb9e5_to_float3(value, p);
  99          dst[0] = float_to_ubyte(p[0]); /* r */
 100          dst[1] = float_to_ubyte(p[1]); /* g */
 101          dst[2] = float_to_ubyte(p[2]); /* b */
 102          dst[3] = 255; /* a */
 103          src += 4;
 104          dst += 4;
 105       }
 106       src_row += src_stride;
 107       dst_row += dst_stride/sizeof(*dst_row);
 108    }
 109 }
 110
 111
 112 void
 113 util_format_r9g9b9e5_float_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 114                                        const uint8_t *src_row, unsigned src_stride,
 115                                        unsigned width, unsigned height)
 116 {
 117    unsigned x, y;
 118    float p[3];
 119    for(y = 0; y < height; y += 1) {
 120       const uint8_t *src = src_row;
 121       uint8_t *dst = dst_row;
 122       for(x = 0; x < width; x += 1) {
 123          uint32_t value;
 124          p[0] = ubyte_to_float(src[0]);
 125          p[1] = ubyte_to_float(src[1]);
 126          p[2] = ubyte_to_float(src[2]);
 127          value = util_cpu_to_le32(float3_to_rgb9e5(p));
 128          *(uint32_t *)dst = value;
 129          src += 4;
 130          dst += 4;
 131       }
 132       dst_row += dst_stride;
 133       src_row += src_stride/sizeof(*src_row);
 134    }
 135 }
 136
 137
 138 void
 139 util_format_r11g11b10_float_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 140                                         const uint8_t *src_row, unsigned src_stride,
 141                                         unsigned width, unsigned height)
 142 {
 143    unsigned x, y;
 144    for(y = 0; y < height; y += 1) {
 145       float *dst = dst_row;
 146       const uint8_t *src = src_row;
 147       for(x = 0; x < width; x += 1) {
 148          uint32_t value = util_cpu_to_le32(*(const uint32_t *)src);
 149          r11g11b10f_to_float3(value, dst);
 150          dst[3] = 1; /* a */
 151          src += 4;
 152          dst += 4;
 153       }
 154       src_row += src_stride;
 155       dst_row += dst_stride/sizeof(*dst_row);
 156    }
 157 }
 158
 159 void
 160 util_format_r11g11b10_float_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 161                                       const float *src_row, unsigned src_stride,
 162                                       unsigned width, unsigned height)
 163 {
 164    unsigned x, y;
 165    for(y = 0; y < height; y += 1) {
 166       const float *src = src_row;
 167       uint8_t *dst = dst_row;
 168       for(x = 0; x < width; x += 1) {
 169          uint32_t value = util_cpu_to_le32(float3_to_r11g11b10f(src));
 170          *(uint32_t *)dst = value;
 171          src += 4;
 172          dst += 4;
 173       }
 174       dst_row += dst_stride;
 175       src_row += src_stride/sizeof(*src_row);
 176    }
 177 }
 178
 179 void
 180 util_format_r11g11b10_float_fetch_rgba_float(float *dst, const uint8_t *src,
 181                                        unsigned i, unsigned j)
 182 {
 183    uint32_t value = util_cpu_to_le32(*(const uint32_t *)src);
 184    r11g11b10f_to_float3(value, dst);
 185    dst[3] = 1; /* a */
 186 }
 187
 188
 189 void
 190 util_format_r11g11b10_float_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 191                                          const uint8_t *src_row, unsigned src_stride,
 192                                          unsigned width, unsigned height)
 193 {
 194    unsigned x, y;
 195    float p[3];
 196    for(y = 0; y < height; y += 1) {
 197       uint8_t *dst = dst_row;
 198       const uint8_t *src = src_row;
 199       for(x = 0; x < width; x += 1) {
 200          uint32_t value = util_cpu_to_le32(*(const uint32_t *)src);
 201          r11g11b10f_to_float3(value, p);
 202          dst[0] = float_to_ubyte(p[0]); /* r */
 203          dst[1] = float_to_ubyte(p[1]); /* g */
 204          dst[2] = float_to_ubyte(p[2]); /* b */
 205          dst[3] = 255; /* a */
 206          src += 4;
 207          dst += 4;
 208       }
 209       src_row += src_stride;
 210       dst_row += dst_stride/sizeof(*dst_row);
 211    }
 212 }
 213
 214
 215 void
 216 util_format_r11g11b10_float_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 217                                        const uint8_t *src_row, unsigned src_stride,
 218                                        unsigned width, unsigned height)
 219 {
 220    unsigned x, y;
 221    float p[3];
 222    for(y = 0; y < height; y += 1) {
 223       const uint8_t *src = src_row;
 224       uint8_t *dst = dst_row;
 225       for(x = 0; x < width; x += 1) {
 226          uint32_t value;
 227          p[0] = ubyte_to_float(src[0]);
 228          p[1] = ubyte_to_float(src[1]);
 229          p[2] = ubyte_to_float(src[2]);
 230          value = util_cpu_to_le32(float3_to_r11g11b10f(p));
 231          *(uint32_t *)dst = value;
 232          src += 4;
 233          dst += 4;
 234       }
 235       dst_row += dst_stride;
 236       src_row += src_stride/sizeof(*src_row);
 237    }
 238 }
 239
 240
 241 void
 242 util_format_r1_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 243                                   const uint8_t *src_row, unsigned src_stride,
 244                                   unsigned width, unsigned height)
 245 {
 246
 247 }
 248
 249
 250 void
 251 util_format_r1_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 252                                 const float *src_row, unsigned src_stride,
 253                                 unsigned width, unsigned height)
 254 {
 255
 256 }
 257
 258
 259 void
 260 util_format_r1_unorm_fetch_rgba_float(float *dst, const uint8_t *src,
 261                                  unsigned i, unsigned j)
 262 {
 263
 264 }
 265
 266
 267 void
 268 util_format_r1_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 269                                    const uint8_t *src_row, unsigned src_stride,
 270                                    unsigned width, unsigned height)
 271 {
 272
 273 }
 274
 275
 276 void
 277 util_format_r1_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 278                                  const uint8_t *src_row, unsigned src_stride,
 279                                  unsigned width, unsigned height)
 280 {
 281 }
 282
 283
 284 /*
 285  * PIPE_FORMAT_R8G8Bx_SNORM
 286  *
 287  * A.k.a. D3DFMT_CxV8U8
 288  */
 289
 290 static uint8_t
 291 r8g8bx_derive(int16_t r, int16_t g)
 292 {
 293    /* Derive blue from red and green components.
 294     * Apparently, we must always use integers to perform calculations,
 295     * otherwise the results won't match D3D's CxV8U8 definition.
 296     */
 297    return (uint8_t)sqrtf(0x7f * 0x7f - r * r - g * g) * 0xff / 0x7f;
 298 }
 299
 300 void
 301 util_format_r8g8bx_snorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 302                                       const uint8_t *src_row, unsigned src_stride,
 303                                       unsigned width, unsigned height)
 304 {
 305    unsigned x, y;
 306
 307    for(y = 0; y < height; y += 1) {
 308       float *dst = dst_row;
 309       const uint16_t *src = (const uint16_t *)src_row;
 310       for(x = 0; x < width; x += 1) {
 311          uint16_t value = util_cpu_to_le16(*src++);
 312          int16_t r, g;
 313
 314          r = ((int16_t)(value << 8)) >> 8;
 315          g = ((int16_t)(value << 0)) >> 8;
 316
 317          dst[0] = (float)(r * (1.0f/0x7f)); /* r */
 318          dst[1] = (float)(g * (1.0f/0x7f)); /* g */
 319          dst[2] = r8g8bx_derive(r, g) * (1.0f/0xff); /* b */
 320          dst[3] = 1.0f; /* a */
 321          dst += 4;
 322       }
 323       src_row += src_stride;
 324       dst_row += dst_stride/sizeof(*dst_row);
 325    }
 326 }
 327
 328
 329 void
 330 util_format_r8g8bx_snorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 331                                        const uint8_t *src_row, unsigned src_stride,
 332                                        unsigned width, unsigned height)
 333 {
 334    unsigned x, y;
 335    for(y = 0; y < height; y += 1) {
 336       uint8_t *dst = dst_row;
 337       const uint16_t *src = (const uint16_t *)src_row;
 338       for(x = 0; x < width; x += 1) {
 339          uint16_t value = util_cpu_to_le16(*src++);
 340          int16_t r, g;
 341
 342          r = ((int16_t)(value << 8)) >> 8;
 343          g = ((int16_t)(value << 0)) >> 8;
 344
 345          dst[0] = (uint8_t)(((uint16_t)MAX2(r, 0)) * 0xff / 0x7f); /* r */
 346          dst[1] = (uint8_t)(((uint16_t)MAX2(g, 0)) * 0xff / 0x7f); /* g */
 347          dst[2] = r8g8bx_derive(r, g); /* b */
 348          dst[3] = 255; /* a */
 349          dst += 4;
 350       }
 351       src_row += src_stride;
 352       dst_row += dst_stride/sizeof(*dst_row);
 353    }
 354 }
 355
 356
 357 void
 358 util_format_r8g8bx_snorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 359                                     const float *src_row, unsigned src_stride,
 360                                     unsigned width, unsigned height)
 361 {
 362    unsigned x, y;
 363    for(y = 0; y < height; y += 1) {
 364       const float *src = src_row;
 365       uint16_t *dst = (uint16_t *)dst_row;
 366       for(x = 0; x < width; x += 1) {
 367          uint16_t value = 0;
 368
 369          value |= (uint16_t)(((int8_t)(CLAMP(src[0], -1, 1) * 0x7f)) & 0xff) ;
 370          value |= (uint16_t)((((int8_t)(CLAMP(src[1], -1, 1) * 0x7f)) & 0xff) << 8) ;
 371
 372          *dst++ = util_le16_to_cpu(value);
 373
 374          src += 4;
 375       }
 376       dst_row += dst_stride;
 377       src_row += src_stride/sizeof(*src_row);
 378    }
 379 }
 380
 381
 382 void
 383 util_format_r8g8bx_snorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 384                                      const uint8_t *src_row, unsigned src_stride,
 385                                      unsigned width, unsigned height)
 386 {
 387    unsigned x, y;
 388
 389    for(y = 0; y < height; y += 1) {
 390       const uint8_t *src = src_row;
 391       uint16_t *dst = (uint16_t *)dst_row;
 392       for(x = 0; x < width; x += 1) {
 393          uint16_t value = 0;
 394
 395          value |= src[0] >> 1;
 396          value |= (src[1] >> 1) << 8;
 397
 398          *dst++ = util_le16_to_cpu(value);
 399
 400          src += 4;
 401       }
 402       dst_row += dst_stride;
 403       src_row += src_stride/sizeof(*src_row);
 404    }
 405 }
 406
 407
 408 void
 409 util_format_r8g8bx_snorm_fetch_rgba_float(float *dst, const uint8_t *src,
 410                                      unsigned i, unsigned j)
 411 {
 412    uint16_t value = util_cpu_to_le16(*(const uint16_t *)src);
 413    int16_t r, g;
 414
 415    r = ((int16_t)(value << 8)) >> 8;
 416    g = ((int16_t)(value << 0)) >> 8;
 417
 418    dst[0] = r * (1.0f/0x7f); /* r */
 419    dst[1] = g * (1.0f/0x7f); /* g */
 420    dst[2] = r8g8bx_derive(r, g) * (1.0f/0xff); /* b */
 421    dst[3] = 1.0f; /* a */
 422 }