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
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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,
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  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
  32
  33 void
  34 util_format_r9g9b9e5_float_unpack_rgba_float(float *dst_row, unsigned dst_stride,
  35                                         const uint8_t *src_row, unsigned src_stride,
  36                                         unsigned width, unsigned height)
  37 {
  38
  39 }
  40
  41 void
  42 util_format_r9g9b9e5_float_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
  43                                       const float *src_row, unsigned src_stride,
  44                                       unsigned width, unsigned height)
  45 {
  46
  47 }
  48
  49 void
  50 util_format_r9g9b9e5_float_fetch_rgba_float(float *dst, const uint8_t *src,
  51                                        unsigned i, unsigned j)
  52 {
  53
  54 }
  55
  56
  57 void
  58 util_format_r9g9b9e5_float_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
  59                                          const uint8_t *src_row, unsigned src_stride,
  60                                          unsigned width, unsigned height)
  61 {
  62
  63 }
  64
  65
  66 void
  67 util_format_r9g9b9e5_float_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
  68                                        const uint8_t *src_row, unsigned src_stride,
  69                                        unsigned width, unsigned height)
  70 {
  71
  72 }
  73
  74
  75 void
  76 util_format_r1_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
  77                                   const uint8_t *src_row, unsigned src_stride,
  78                                   unsigned width, unsigned height)
  79 {
  80
  81 }
  82
  83
  84 void
  85 util_format_r1_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
  86                                 const float *src_row, unsigned src_stride,
  87                                 unsigned width, unsigned height)
  88 {
  89
  90 }
  91
  92
  93 void
  94 util_format_r1_unorm_fetch_rgba_float(float *dst, const uint8_t *src,
  95                                  unsigned i, unsigned j)
  96 {
  97
  98 }
  99
 100
 101 void
 102 util_format_r1_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 103                                    const uint8_t *src_row, unsigned src_stride,
 104                                    unsigned width, unsigned height)
 105 {
 106
 107 }
 108
 109
 110 void
 111 util_format_r1_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 112                                  const uint8_t *src_row, unsigned src_stride,
 113                                  unsigned width, unsigned height)
 114 {
 115 }
 116
 117
 118 /*
 119  * PIPE_FORMAT_R8G8Bx_SNORM
 120  *
 121  * A.k.a. D3DFMT_CxV8U8
 122  */
 123
 124
 125 void
 126 util_format_r8g8bx_snorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
 127                                       const uint8_t *src_row, unsigned src_stride,
 128                                       unsigned width, unsigned height)
 129 {
 130    unsigned x, y;
 131
 132    for(y = 0; y < height; y += 1) {
 133       float *dst = dst_row;
 134       const uint16_t *src = (const uint16_t *)src_row;
 135       for(x = 0; x < width; x += 1) {
 136          uint16_t value = *src++;
 137          int16_t r, g;
 138
 139 #ifdef PIPE_ARCH_BIG_ENDIAN
 140          value = util_bswap32(value);
 141 #endif
 142
 143          r = ((int16_t)(value << 8)) >> 8;
 144          g = ((int16_t)(value << 0)) >> 8;
 145
 146          dst[0] = (float)(r * (1.0f/0x7f)); /* r */
 147          dst[1] = (float)(g * (1.0f/0x7f)); /* g */
 148          dst[2] = sqrtf(1.0f - dst[0] * dst[0] - dst[1] * dst[1]); /* b */
 149          dst[3] = 1.0f; /* a */
 150          dst += 4;
 151       }
 152       src_row += src_stride;
 153       dst_row += dst_stride/sizeof(*dst_row);
 154    }
 155 }
 156
 157
 158 void
 159 util_format_r8g8bx_snorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 160                                        const uint8_t *src_row, unsigned src_stride,
 161                                        unsigned width, unsigned height)
 162 {
 163    unsigned x, y;
 164    for(y = 0; y < height; y += 1) {
 165       uint8_t *dst = dst_row;
 166       const uint16_t *src = (const uint16_t *)src_row;
 167       for(x = 0; x < width; x += 1) {
 168          uint16_t value = *src++;
 169          int16_t r, g;
 170
 171 #ifdef PIPE_ARCH_BIG_ENDIAN
 172          value = util_bswap32(value);
 173 #endif
 174
 175          r = ((int16_t)(value << 8)) >> 8;
 176          g = ((int16_t)(value << 0)) >> 8;
 177
 178          dst[0] = (uint8_t)(((uint16_t)MAX2(r, 0)) * 0xff / 0x7f); /* r */
 179          dst[1] = (uint8_t)(((uint16_t)MAX2(g, 0)) * 0xff / 0x7f); /* g */
 180          dst[2] = (uint8_t)sqrtf(0x7f*0x7f - r * r - g * g) * 0xff / 0x7f; /* b */
 181          dst[3] = 255; /* a */
 182          dst += 4;
 183       }
 184       src_row += src_stride;
 185       dst_row += dst_stride/sizeof(*dst_row);
 186    }
 187 }
 188
 189
 190 void
 191 util_format_r8g8bx_snorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
 192                                     const float *src_row, unsigned src_stride,
 193                                     unsigned width, unsigned height)
 194 {
 195    unsigned x, y;
 196    for(y = 0; y < height; y += 1) {
 197       const float *src = src_row;
 198       uint16_t *dst = (uint16_t *)dst_row;
 199       for(x = 0; x < width; x += 1) {
 200          uint16_t value = 0;
 201
 202          value |= (uint16_t)(((int8_t)(CLAMP(src[0], -1, 1) * 0x7f)) & 0xff) ;
 203          value |= (uint16_t)((((int8_t)(CLAMP(src[1], -1, 1) * 0x7f)) & 0xff) << 8) ;
 204
 205 #ifdef PIPE_ARCH_BIG_ENDIAN
 206          value = util_bswap32(value);
 207 #endif
 208
 209          *dst++ = value;
 210
 211          src += 4;
 212       }
 213       dst_row += dst_stride;
 214       src_row += src_stride/sizeof(*src_row);
 215    }
 216 }
 217
 218
 219 void
 220 util_format_r8g8bx_snorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
 221                                      const uint8_t *src_row, unsigned src_stride,
 222                                      unsigned width, unsigned height)
 223 {
 224    unsigned x, y;
 225
 226    for(y = 0; y < height; y += 1) {
 227       const uint8_t *src = src_row;
 228       uint16_t *dst = (uint16_t *)dst_row;
 229       for(x = 0; x < width; x += 1) {
 230          uint16_t value = 0;
 231
 232          value |= src[0] >> 1;
 233          value |= (src[1] >> 1) << 8;
 234
 235 #ifdef PIPE_ARCH_BIG_ENDIAN
 236          value = util_bswap32(value);
 237 #endif
 238
 239          *dst++ = value;
 240
 241          src += 4;
 242       }
 243       dst_row += dst_stride;
 244       src_row += src_stride/sizeof(*src_row);
 245    }
 246 }
 247
 248
 249 void
 250 util_format_r8g8bx_snorm_fetch_rgba_float(float *dst, const uint8_t *src,
 251                                      unsigned i, unsigned j)
 252 {
 253    uint16_t value = *(const uint16_t *)src;
 254    int16_t r, g;
 255
 256 #ifdef PIPE_ARCH_BIG_ENDIAN
 257    value = util_bswap32(value);
 258 #endif
 259
 260    r = ((int16_t)(value << 8)) >> 8;
 261    g = ((int16_t)(value << 0)) >> 8;
 262
 263    dst[0] = r * (1.0f/0x7f); /* r */
 264    dst[1] = g * (1.0f/0x7f); /* g */
 265    dst[2] = sqrtf(1.0f - dst[0] * dst[0] - dst[1] * dst[1]); /* b */
 266    dst[3] = 1.0f; /* a */
 267 }