src/mesa/main/texformat_tmp.h

   1 /* $Id: texformat_tmp.h,v 1.2 2001/03/18 13:34:24 gareth Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.5
   6  *
   7  * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * Author:
  27  *    Gareth Hughes <gareth@valinux.com>
  28  */
  29
  30 #if DIM == 1
  31
  32 #define CHAN_SRC( t, i, j, k, sz )                                      \
  33         ((GLchan *)(t)->Data + (i) * (sz))
  34 #define UBYTE_SRC( t, i, j, k, sz )                                     \
  35         ((GLubyte *)(t)->Data + (i) * (sz))
  36 #define USHORT_SRC( t, i, j, k )                                        \
  37         ((GLushort *)(t)->Data + (i))
  38 #define FLOAT_SRC( t, i, j, k )                                         \
  39         ((GLfloat *)(t)->Data + (i))
  40
  41 #define FETCH(x) fetch_1d_texel_##x
  42
  43 #elif DIM == 2
  44
  45 #define CHAN_SRC( t, i, j, k, sz )                                      \
  46         ((GLchan *)(t)->Data + ((t)->Width * (j) + (i)) * (sz))
  47 #define UBYTE_SRC( t, i, j, k, sz )                                     \
  48         ((GLubyte *)(t)->Data + ((t)->Width * (j) + (i)) * (sz))
  49 #define USHORT_SRC( t, i, j, k )                                        \
  50         ((GLushort *)(t)->Data + ((t)->Width * (j) + (i)))
  51 #define FLOAT_SRC( t, i, j, k )                                         \
  52         ((GLfloat *)(t)->Data + ((t)->Width * (j) + (i)))
  53
  54 #define FETCH(x) fetch_2d_texel_##x
  55
  56 #elif DIM == 3
  57
  58 #define CHAN_SRC( t, i, j, k, sz )                                      \
  59         (GLchan *)(t)->Data + (((t)->Height * (k) + (j)) *              \
  60                                 (t)->Width + (i)) * (sz)
  61 #define UBYTE_SRC( t, i, j, k, sz )                                     \
  62         ((GLubyte *)(t)->Data + (((t)->Height * (k) + (j)) *            \
  63                                  (t)->Width + (i)) * (sz))
  64 #define USHORT_SRC( t, i, j, k )                                        \
  65         ((GLushort *)(t)->Data + (((t)->Height * (k) + (j)) *           \
  66                                   (t)->Width + (i)))
  67 #define FLOAT_SRC( t, i, j, k )                                         \
  68         ((GLfloat *)(t)->Data + (((t)->Height * (k) + (j)) *            \
  69                                   (t)->Width + (i)))
  70
  71 #define FETCH(x) fetch_3d_texel_##x
  72
  73 #else
  74 #error "..."
  75 #endif
  76
  77
  78 static void FETCH(rgba)( const struct gl_texture_image *texImage,
  79                          GLint i, GLint j, GLint k, GLvoid *texel )
  80 {
  81    const GLchan *src = CHAN_SRC( texImage, i, j, k, 4 );
  82    GLchan *rgba = (GLchan *) texel;
  83    COPY_CHAN4( rgba, src );
  84 }
  85
  86 static void FETCH(rgb)( const struct gl_texture_image *texImage,
  87                         GLint i, GLint j, GLint k, GLvoid *texel )
  88 {
  89    const GLchan *src = CHAN_SRC( texImage, i, j, k, 3 );
  90    GLchan *rgba = (GLchan *) texel;
  91    rgba[RCOMP] = src[0];
  92    rgba[GCOMP] = src[1];
  93    rgba[BCOMP] = src[2];
  94    rgba[ACOMP] = CHAN_MAX;
  95 }
  96
  97 static void FETCH(alpha)( const struct gl_texture_image *texImage,
  98                           GLint i, GLint j, GLint k, GLvoid *texel )
  99 {
 100    const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 );
 101    GLchan *rgba = (GLchan *) texel;
 102    rgba[RCOMP] = 0;
 103    rgba[GCOMP] = 0;
 104    rgba[BCOMP] = 0;
 105    rgba[ACOMP] = src[0];
 106 }
 107
 108 static void FETCH(luminance)( const struct gl_texture_image *texImage,
 109                               GLint i, GLint j, GLint k, GLvoid *texel )
 110 {
 111    const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 );
 112    GLchan *rgba = (GLchan *) texel;
 113    rgba[RCOMP] = src[0];
 114    rgba[GCOMP] = src[0];
 115    rgba[BCOMP] = src[0];
 116    rgba[ACOMP] = CHAN_MAX;
 117 }
 118
 119 static void FETCH(luminance_alpha)( const struct gl_texture_image *texImage,
 120                                     GLint i, GLint j, GLint k, GLvoid *texel )
 121 {
 122    const GLchan *src = CHAN_SRC( texImage, i, j, k, 2 );
 123    GLchan *rgba = (GLchan *) texel;
 124    rgba[RCOMP] = src[0];
 125    rgba[GCOMP] = src[0];
 126    rgba[BCOMP] = src[0];
 127    rgba[ACOMP] = src[1];
 128 }
 129
 130 static void FETCH(intensity)( const struct gl_texture_image *texImage,
 131                               GLint i, GLint j, GLint k, GLvoid *texel )
 132 {
 133    const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 );
 134    GLchan *rgba = (GLchan *) texel;
 135    rgba[RCOMP] = src[0];
 136    rgba[GCOMP] = src[0];
 137    rgba[BCOMP] = src[0];
 138    rgba[ACOMP] = src[0];
 139 }
 140
 141 static void FETCH(color_index)( const struct gl_texture_image *texImage,
 142                                 GLint i, GLint j, GLint k, GLvoid *texel )
 143 {
 144    const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 );
 145    GLchan *index = (GLchan *) texel;
 146    *index = *src;
 147 }
 148
 149 static void FETCH(depth_component)( const struct gl_texture_image *texImage,
 150                                     GLint i, GLint j, GLint k, GLvoid *texel )
 151 {
 152    const GLfloat *src = FLOAT_SRC( texImage, i, j, k );
 153    GLfloat *depth = (GLfloat *) texel;
 154    *depth = *src;
 155 }
 156
 157 static void FETCH(rgba8888)( const struct gl_texture_image *texImage,
 158                              GLint i, GLint j, GLint k, GLvoid *texel )
 159 {
 160    const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 4 );
 161    GLchan *rgba = (GLchan *) texel;
 162    rgba[RCOMP] = UBYTE_TO_CHAN( src[3] );
 163    rgba[GCOMP] = UBYTE_TO_CHAN( src[2] );
 164    rgba[BCOMP] = UBYTE_TO_CHAN( src[1] );
 165    rgba[ACOMP] = UBYTE_TO_CHAN( src[0] );
 166 }
 167
 168 static void FETCH(argb8888)( const struct gl_texture_image *texImage,
 169                              GLint i, GLint j, GLint k, GLvoid *texel )
 170 {
 171    const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 4 );
 172    GLchan *rgba = (GLchan *) texel;
 173    rgba[RCOMP] = UBYTE_TO_CHAN( src[2] );
 174    rgba[GCOMP] = UBYTE_TO_CHAN( src[1] );
 175    rgba[BCOMP] = UBYTE_TO_CHAN( src[0] );
 176    rgba[ACOMP] = UBYTE_TO_CHAN( src[3] );
 177 }
 178
 179 static void FETCH(rgb888)( const struct gl_texture_image *texImage,
 180                            GLint i, GLint j, GLint k, GLvoid *texel )
 181 {
 182    const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 3 );
 183    GLchan *rgba = (GLchan *) texel;
 184    rgba[RCOMP] = UBYTE_TO_CHAN( src[2] );
 185    rgba[GCOMP] = UBYTE_TO_CHAN( src[1] );
 186    rgba[BCOMP] = UBYTE_TO_CHAN( src[0] );
 187    rgba[ACOMP] = CHAN_MAX;
 188 }
 189
 190 static void FETCH(rgb565)( const struct gl_texture_image *texImage,
 191                            GLint i, GLint j, GLint k, GLvoid *texel )
 192 {
 193    const GLushort *src = USHORT_SRC( texImage, i, j, k );
 194    GLchan *rgba = (GLchan *) texel; GLushort s = *src;
 195    rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf8) * 255 / 0xf8 );
 196    rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 3) & 0xfc) * 255 / 0xfc );
 197    rgba[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) * 255 / 0xf8 );
 198    rgba[ACOMP] = CHAN_MAX;
 199 }
 200
 201 static void FETCH(argb4444)( const struct gl_texture_image *texImage,
 202                              GLint i, GLint j, GLint k, GLvoid *texel )
 203 {
 204    const GLushort *src = USHORT_SRC( texImage, i, j, k );
 205    GLchan *rgba = (GLchan *) texel; GLushort s = *src;
 206    rgba[RCOMP] = UBYTE_TO_CHAN( ((s >>  8) & 0xf) * 255 / 0xf );
 207    rgba[GCOMP] = UBYTE_TO_CHAN( ((s >>  4) & 0xf) * 255 / 0xf );
 208    rgba[BCOMP] = UBYTE_TO_CHAN( ((s      ) & 0xf) * 255 / 0xf );
 209    rgba[ACOMP] = UBYTE_TO_CHAN( ((s >> 12) & 0xf) * 255 / 0xf );
 210 }
 211
 212 static void FETCH(argb1555)( const struct gl_texture_image *texImage,
 213                              GLint i, GLint j, GLint k, GLvoid *texel )
 214 {
 215    const GLushort *src = USHORT_SRC( texImage, i, j, k );
 216    GLchan *rgba = (GLchan *) texel; GLushort s = *src;
 217    rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 10) & 0xf8) * 255 / 0xf8 );
 218    rgba[GCOMP] = UBYTE_TO_CHAN( ((s >>  5) & 0xf8) * 255 / 0xf8 );
 219    rgba[BCOMP] = UBYTE_TO_CHAN( ((s      ) & 0xf8) * 255 / 0xf8 );
 220    rgba[ACOMP] = UBYTE_TO_CHAN( ((s >> 15) & 0x01) * 255 );
 221 }
 222
 223 static void FETCH(al88)( const struct gl_texture_image *texImage,
 224                          GLint i, GLint j, GLint k, GLvoid *texel )
 225 {
 226    const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 2 );
 227    GLchan *rgba = (GLchan *) texel;
 228    rgba[RCOMP] = UBYTE_TO_CHAN( src[0] );
 229    rgba[GCOMP] = UBYTE_TO_CHAN( src[0] );
 230    rgba[BCOMP] = UBYTE_TO_CHAN( src[0] );
 231    rgba[ACOMP] = UBYTE_TO_CHAN( src[1] );
 232 }
 233
 234 static void FETCH(rgb332)( const struct gl_texture_image *texImage,
 235                            GLint i, GLint j, GLint k, GLvoid *texel )
 236 {
 237    const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 );
 238    GLchan *rgba = (GLchan *) texel; GLubyte s = *src;
 239    rgba[RCOMP] = UBYTE_TO_CHAN( ((s     ) & 0xe0) * 255 / 0xe0 );
 240    rgba[GCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xe0) * 255 / 0xe0 );
 241    rgba[BCOMP] = UBYTE_TO_CHAN( ((s << 5) & 0xc0) * 255 / 0xc0 );
 242    rgba[ACOMP] = CHAN_MAX;
 243 }
 244
 245 static void FETCH(a8)( const struct gl_texture_image *texImage,
 246                        GLint i, GLint j, GLint k, GLvoid *texel )
 247 {
 248    const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 );
 249    GLchan *rgba = (GLchan *) texel;
 250    rgba[RCOMP] = 0;
 251    rgba[GCOMP] = 0;
 252    rgba[BCOMP] = 0;
 253    rgba[ACOMP] = UBYTE_TO_CHAN( src[0] );
 254 }
 255
 256 static void FETCH(l8)( const struct gl_texture_image *texImage,
 257                        GLint i, GLint j, GLint k, GLvoid *texel )
 258 {
 259    const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 );
 260    GLchan *rgba = (GLchan *) texel;
 261    rgba[RCOMP] = UBYTE_TO_CHAN( src[0] );
 262    rgba[GCOMP] = UBYTE_TO_CHAN( src[0] );
 263    rgba[BCOMP] = UBYTE_TO_CHAN( src[0] );
 264    rgba[ACOMP] = CHAN_MAX;
 265 }
 266
 267 static void FETCH(i8)( const struct gl_texture_image *texImage,
 268                        GLint i, GLint j, GLint k, GLvoid *texel )
 269 {
 270    const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 );
 271    GLchan *rgba = (GLchan *) texel;
 272    rgba[RCOMP] = UBYTE_TO_CHAN( src[0] );
 273    rgba[GCOMP] = UBYTE_TO_CHAN( src[0] );
 274    rgba[BCOMP] = UBYTE_TO_CHAN( src[0] );
 275    rgba[ACOMP] = UBYTE_TO_CHAN( src[0] );
 276 }
 277
 278 static void FETCH(ci8)( const struct gl_texture_image *texImage,
 279                         GLint i, GLint j, GLint k, GLvoid *texel )
 280 {
 281    const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 );
 282    GLchan *index = (GLchan *) texel;
 283    *index = UBYTE_TO_CHAN( *src );
 284 }
 285
 286
 287 #undef CHAN_SRC
 288 #undef UBYTE_SRC
 289 #undef USHORT_SRC
 290 #undef FLOAT_SRC
 291 #undef FETCH
 292 #undef DIM