src/util/format/u_format_other.c

   1 /**************************************************************************
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   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
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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
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  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 "util/format/u_format_other.h"
  30 #include "util/u_math.h"
  31 #include "util/format_rgb9e5.h"
  32 #include "util/format_r11g11b10f.h"
  33
  34
  35 void
  36 util_format_r9g9b9e5_float_unpack_rgba_float(void *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 = (uint8_t *)dst_row + dst_stride;
  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(void *in_dst, const uint8_t *src,
  78                                        UNUSED unsigned i, UNUSED unsigned j)
  79 {
  80    float *dst = in_dst;
  81    uint32_t value = util_cpu_to_le32(*(const uint32_t *)src);
  82    rgb9e5_to_float3(value, dst);
  83    dst[3] = 1; /* a */
  84 }
  85
  86
  87 void
  88 util_format_r9g9b9e5_float_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
  89                                          const uint8_t *src_row, unsigned src_stride,
  90                                          unsigned width, unsigned height)
  91 {
  92    unsigned x, y;
  93    float p[3];
  94    for(y = 0; y < height; y += 1) {
  95       uint8_t *dst = dst_row;
  96       const uint8_t *src = src_row;
  97       for(x = 0; x < width; x += 1) {
  98          uint32_t value = util_cpu_to_le32(*(const uint32_t *)src);
  99          rgb9e5_to_float3(value, p);
 100          dst[0] = float_to_ubyte(p[0]); /* r */
 101          dst[1] = float_to_ubyte(p[1]); /* g */
 102          dst[2] = float_to_ubyte(p[2]); /* b */
 103          dst[3] = 255; /* a */
 104          src += 4;
 105          dst += 4;
 106       }
 107       src_row += src_stride;
 108       dst_row += dst_stride/sizeof(*dst_row);
 109    }
 110 }
 111
 112
 113 void
 114 util_format_r9g9b9e5_float_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 115                                        const uint8_t *src_row, unsigned src_stride,
 116                                        unsigned width, unsigned height)
 117 {
 118    unsigned x, y;
 119    float p[3];
 120    for(y = 0; y < height; y += 1) {
 121       const uint8_t *src = src_row;
 122       uint8_t *dst = dst_row;
 123       for(x = 0; x < width; x += 1) {
 124          uint32_t value;
 125          p[0] = ubyte_to_float(src[0]);
 126          p[1] = ubyte_to_float(src[1]);
 127          p[2] = ubyte_to_float(src[2]);
 128          value = util_cpu_to_le32(float3_to_rgb9e5(p));
 129          *(uint32_t *)dst = value;
 130          src += 4;
 131          dst += 4;
 132       }
 133       dst_row += dst_stride;
 134       src_row += src_stride/sizeof(*src_row);
 135    }
 136 }
 137
 138
 139 void
 140 util_format_r11g11b10_float_unpack_rgba_float(void *dst_row, unsigned dst_stride,
 141                                         const uint8_t *src_row, unsigned src_stride,
 142                                         unsigned width, unsigned height)
 143 {
 144    unsigned x, y;
 145    for(y = 0; y < height; y += 1) {
 146       float *dst = dst_row;
 147       const uint8_t *src = src_row;
 148       for(x = 0; x < width; x += 1) {
 149          uint32_t value = util_cpu_to_le32(*(const uint32_t *)src);
 150          r11g11b10f_to_float3(value, dst);
 151          dst[3] = 1; /* a */
 152          src += 4;
 153          dst += 4;
 154       }
 155       src_row += src_stride;
 156       dst_row = (uint8_t *)dst_row + dst_stride;
 157    }
 158 }
 159
 160 void
 161 util_format_r11g11b10_float_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 162                                       const float *src_row, unsigned src_stride,
 163                                       unsigned width, unsigned height)
 164 {
 165    unsigned x, y;
 166    for(y = 0; y < height; y += 1) {
 167       const float *src = src_row;
 168       uint8_t *dst = dst_row;
 169       for(x = 0; x < width; x += 1) {
 170          uint32_t value = util_cpu_to_le32(float3_to_r11g11b10f(src));
 171          *(uint32_t *)dst = value;
 172          src += 4;
 173          dst += 4;
 174       }
 175       dst_row += dst_stride;
 176       src_row += src_stride/sizeof(*src_row);
 177    }
 178 }
 179
 180 void
 181 util_format_r11g11b10_float_fetch_rgba(void *in_dst, const uint8_t *src,
 182                                         UNUSED unsigned i, UNUSED unsigned j)
 183 {
 184    float *dst = in_dst;
 185    uint32_t value = util_cpu_to_le32(*(const uint32_t *)src);
 186    r11g11b10f_to_float3(value, dst);
 187    dst[3] = 1; /* a */
 188 }
 189
 190
 191 void
 192 util_format_r11g11b10_float_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 193                                          const uint8_t *src_row, unsigned src_stride,
 194                                          unsigned width, unsigned height)
 195 {
 196    unsigned x, y;
 197    float p[3];
 198    for(y = 0; y < height; y += 1) {
 199       uint8_t *dst = dst_row;
 200       const uint8_t *src = src_row;
 201       for(x = 0; x < width; x += 1) {
 202          uint32_t value = util_cpu_to_le32(*(const uint32_t *)src);
 203          r11g11b10f_to_float3(value, p);
 204          dst[0] = float_to_ubyte(p[0]); /* r */
 205          dst[1] = float_to_ubyte(p[1]); /* g */
 206          dst[2] = float_to_ubyte(p[2]); /* b */
 207          dst[3] = 255; /* a */
 208          src += 4;
 209          dst += 4;
 210       }
 211       src_row += src_stride;
 212       dst_row += dst_stride/sizeof(*dst_row);
 213    }
 214 }
 215
 216
 217 void
 218 util_format_r11g11b10_float_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 219                                        const uint8_t *src_row, unsigned src_stride,
 220                                        unsigned width, unsigned height)
 221 {
 222    unsigned x, y;
 223    float p[3];
 224    for(y = 0; y < height; y += 1) {
 225       const uint8_t *src = src_row;
 226       uint8_t *dst = dst_row;
 227       for(x = 0; x < width; x += 1) {
 228          uint32_t value;
 229          p[0] = ubyte_to_float(src[0]);
 230          p[1] = ubyte_to_float(src[1]);
 231          p[2] = ubyte_to_float(src[2]);
 232          value = util_cpu_to_le32(float3_to_r11g11b10f(p));
 233          *(uint32_t *)dst = value;
 234          src += 4;
 235          dst += 4;
 236       }
 237       dst_row += dst_stride;
 238       src_row += src_stride/sizeof(*src_row);
 239    }
 240 }
 241
 242 /*
 243  * PIPE_FORMAT_R8G8Bx_SNORM
 244  *
 245  * A.k.a. D3DFMT_CxV8U8
 246  */
 247
 248 static uint8_t
 249 r8g8bx_derive(int16_t r, int16_t g)
 250 {
 251    /* Derive blue from red and green components.
 252     * Apparently, we must always use integers to perform calculations,
 253     * otherwise the results won't match D3D's CxV8U8 definition.
 254     */
 255    return (uint8_t)sqrtf(0x7f * 0x7f - r * r - g * g) * 0xff / 0x7f;
 256 }
 257
 258 void
 259 util_format_r8g8bx_snorm_unpack_rgba_float(void *dst_row, unsigned dst_stride,
 260                                       const uint8_t *src_row, unsigned src_stride,
 261                                       unsigned width, unsigned height)
 262 {
 263    unsigned x, y;
 264
 265    for(y = 0; y < height; y += 1) {
 266       float *dst = dst_row;
 267       const uint16_t *src = (const uint16_t *)src_row;
 268       for(x = 0; x < width; x += 1) {
 269          uint16_t value = util_cpu_to_le16(*src++);
 270          int16_t r, g;
 271
 272          r = ((int16_t)(value << 8)) >> 8;
 273          g = ((int16_t)(value << 0)) >> 8;
 274
 275          dst[0] = (float)(r * (1.0f/0x7f)); /* r */
 276          dst[1] = (float)(g * (1.0f/0x7f)); /* g */
 277          dst[2] = r8g8bx_derive(r, g) * (1.0f/0xff); /* b */
 278          dst[3] = 1.0f; /* a */
 279          dst += 4;
 280       }
 281       src_row += src_stride;
 282       dst_row = (uint8_t *)dst_row + dst_stride;
 283    }
 284 }
 285
 286
 287 void
 288 util_format_r8g8bx_snorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 289                                        const uint8_t *src_row, unsigned src_stride,
 290                                        unsigned width, unsigned height)
 291 {
 292    unsigned x, y;
 293    for(y = 0; y < height; y += 1) {
 294       uint8_t *dst = dst_row;
 295       const uint16_t *src = (const uint16_t *)src_row;
 296       for(x = 0; x < width; x += 1) {
 297          uint16_t value = util_cpu_to_le16(*src++);
 298          int16_t r, g;
 299
 300          r = ((int16_t)(value << 8)) >> 8;
 301          g = ((int16_t)(value << 0)) >> 8;
 302
 303          dst[0] = (uint8_t)(((uint16_t)MAX2(r, 0)) * 0xff / 0x7f); /* r */
 304          dst[1] = (uint8_t)(((uint16_t)MAX2(g, 0)) * 0xff / 0x7f); /* g */
 305          dst[2] = r8g8bx_derive(r, g); /* b */
 306          dst[3] = 255; /* a */
 307          dst += 4;
 308       }
 309       src_row += src_stride;
 310       dst_row += dst_stride/sizeof(*dst_row);
 311    }
 312 }
 313
 314
 315 void
 316 util_format_r8g8bx_snorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 317                                     const float *src_row, unsigned src_stride,
 318                                     unsigned width, unsigned height)
 319 {
 320    unsigned x, y;
 321    for(y = 0; y < height; y += 1) {
 322       const float *src = src_row;
 323       uint16_t *dst = (uint16_t *)dst_row;
 324       for(x = 0; x < width; x += 1) {
 325          uint16_t value = 0;
 326
 327          value |= (uint16_t)(((int8_t)(CLAMP(src[0], -1, 1) * 0x7f)) & 0xff) ;
 328          value |= (uint16_t)((((int8_t)(CLAMP(src[1], -1, 1) * 0x7f)) & 0xff) << 8) ;
 329
 330          *dst++ = util_le16_to_cpu(value);
 331
 332          src += 4;
 333       }
 334       dst_row += dst_stride;
 335       src_row += src_stride/sizeof(*src_row);
 336    }
 337 }
 338
 339
 340 void
 341 util_format_r8g8bx_snorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 342                                      const uint8_t *src_row, unsigned src_stride,
 343                                      unsigned width, unsigned height)
 344 {
 345    unsigned x, y;
 346
 347    for(y = 0; y < height; y += 1) {
 348       const uint8_t *src = src_row;
 349       uint16_t *dst = (uint16_t *)dst_row;
 350       for(x = 0; x < width; x += 1) {
 351          uint16_t value = 0;
 352
 353          value |= src[0] >> 1;
 354          value |= (src[1] >> 1) << 8;
 355
 356          *dst++ = util_le16_to_cpu(value);
 357
 358          src += 4;
 359       }
 360       dst_row += dst_stride;
 361       src_row += src_stride/sizeof(*src_row);
 362    }
 363 }
 364
 365
 366 void
 367 util_format_r8g8bx_snorm_fetch_rgba(void *in_dst, const uint8_t *src,
 368                                      UNUSED unsigned i, UNUSED unsigned j)
 369 {
 370    float *dst = in_dst;
 371    uint16_t value = util_cpu_to_le16(*(const uint16_t *)src);
 372    int16_t r, g;
 373
 374    r = ((int16_t)(value << 8)) >> 8;
 375    g = ((int16_t)(value << 0)) >> 8;
 376
 377    dst[0] = r * (1.0f/0x7f); /* r */
 378    dst[1] = g * (1.0f/0x7f); /* g */
 379    dst[2] = r8g8bx_derive(r, g) * (1.0f/0xff); /* b */
 380    dst[3] = 1.0f; /* a */
 381 }