src/gallium/auxiliary/translate/translate_generic.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   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
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28  /*
  29   * Authors:
  30   *   Keith Whitwell <keith@tungstengraphics.com>
  31   */
  32
  33 #include "pipe/p_util.h"
  34 #include "pipe/p_state.h"
  35 #include "translate.h"
  36
  37
  38 #define DRAW_DBG 0
  39
  40 typedef void (*fetch_func)(const void *ptr, float *attrib);
  41 typedef void (*emit_func)(const float *attrib, void *ptr);
  42
  43
  44
  45 struct translate_generic {
  46    struct translate translate;
  47
  48    struct {
  49       fetch_func fetch;
  50       unsigned buffer;
  51       unsigned input_offset;
  52
  53       emit_func emit;
  54       unsigned output_offset;
  55
  56       char *input_ptr;
  57       unsigned input_stride;
  58
  59    } attrib[PIPE_MAX_ATTRIBS];
  60
  61    unsigned nr_attrib;
  62 };
  63
  64
  65 static struct translate_generic *translate_generic( struct translate *translate )
  66 {
  67    return (struct translate_generic *)translate;
  68 }
  69
  70 /**
  71  * Fetch a float[4] vertex attribute from memory, doing format/type
  72  * conversion as needed.
  73  *
  74  * This is probably needed/dupliocated elsewhere, eg format
  75  * conversion, texture sampling etc.
  76  */
  77 #define ATTRIB( NAME, SZ, TYPE, FROM, TO )              \
  78 static void                                             \
  79 fetch_##NAME(const void *ptr, float *attrib)            \
  80 {                                                       \
  81    const float defaults[4] = { 0.0f,0.0f,0.0f,1.0f };   \
  82    unsigned i;                                          \
  83                                                         \
  84    for (i = 0; i < SZ; i++) {                           \
  85       attrib[i] = FROM(i);                              \
  86    }                                                    \
  87                                                         \
  88    for (; i < 4; i++) {                                 \
  89       attrib[i] = defaults[i];                          \
  90    }                                                    \
  91 }                                                       \
  92                                                         \
  93 static void                                             \
  94 emit_##NAME(const float *attrib, void *ptr)             \
  95 {  \
  96    unsigned i;                                          \
  97    TYPE *out = (TYPE *)ptr;                             \
  98                                                         \
  99    for (i = 0; i < SZ; i++) {                           \
 100       out[i] = TO(attrib[i]);                           \
 101    }                                                    \
 102 }
 103
 104
 105 #define FROM_64_FLOAT(i)   ((float) ((double *) ptr)[i])
 106 #define FROM_32_FLOAT(i)   (((float *) ptr)[i])
 107
 108 #define FROM_8_USCALED(i)  ((float) ((unsigned char *) ptr)[i])
 109 #define FROM_16_USCALED(i) ((float) ((unsigned short *) ptr)[i])
 110 #define FROM_32_USCALED(i) ((float) ((unsigned int *) ptr)[i])
 111
 112 #define FROM_8_SSCALED(i)  ((float) ((char *) ptr)[i])
 113 #define FROM_16_SSCALED(i) ((float) ((short *) ptr)[i])
 114 #define FROM_32_SSCALED(i) ((float) ((int *) ptr)[i])
 115
 116 #define FROM_8_UNORM(i)    ((float) ((unsigned char *) ptr)[i] / 255.0f)
 117 #define FROM_16_UNORM(i)   ((float) ((unsigned short *) ptr)[i] / 65535.0f)
 118 #define FROM_32_UNORM(i)   ((float) ((unsigned int *) ptr)[i] / 4294967295.0f)
 119
 120 #define FROM_8_SNORM(i)    ((float) ((char *) ptr)[i] / 127.0f)
 121 #define FROM_16_SNORM(i)   ((float) ((short *) ptr)[i] / 32767.0f)
 122 #define FROM_32_SNORM(i)   ((float) ((int *) ptr)[i] / 2147483647.0f)
 123
 124 #define TO_64_FLOAT(x)   ((double) x)
 125 #define TO_32_FLOAT(x)   (x)
 126
 127 #define TO_8_USCALED(x)  ((unsigned char) x)
 128 #define TO_16_USCALED(x) ((unsigned short) x)
 129 #define TO_32_USCALED(x) ((unsigned int) x)
 130
 131 #define TO_8_SSCALED(x)  ((char) x)
 132 #define TO_16_SSCALED(x) ((short) x)
 133 #define TO_32_SSCALED(x) ((int) x)
 134
 135 #define TO_8_UNORM(x)    ((unsigned char) (x * 255.0f))
 136 #define TO_16_UNORM(x)   ((unsigned short) (x * 65535.0f))
 137 #define TO_32_UNORM(x)   ((unsigned int) (x * 4294967295.0f))
 138
 139 #define TO_8_SNORM(x)    ((char) (x * 127.0f))
 140 #define TO_16_SNORM(x)   ((short) (x * 32767.0f))
 141 #define TO_32_SNORM(x)   ((int) (x * 2147483647.0f))
 142
 143
 144
 145 ATTRIB( R64G64B64A64_FLOAT,   4, double, FROM_64_FLOAT, TO_64_FLOAT )
 146 ATTRIB( R64G64B64_FLOAT,      3, double, FROM_64_FLOAT, TO_64_FLOAT )
 147 ATTRIB( R64G64_FLOAT,         2, double, FROM_64_FLOAT, TO_64_FLOAT )
 148 ATTRIB( R64_FLOAT,            1, double, FROM_64_FLOAT, TO_64_FLOAT )
 149
 150 ATTRIB( R32G32B32A32_FLOAT,   4, float, FROM_32_FLOAT, TO_32_FLOAT )
 151 ATTRIB( R32G32B32_FLOAT,      3, float, FROM_32_FLOAT, TO_32_FLOAT )
 152 ATTRIB( R32G32_FLOAT,         2, float, FROM_32_FLOAT, TO_32_FLOAT )
 153 ATTRIB( R32_FLOAT,            1, float, FROM_32_FLOAT, TO_32_FLOAT )
 154
 155 ATTRIB( R32G32B32A32_USCALED, 4, unsigned, FROM_32_USCALED, TO_32_USCALED )
 156 ATTRIB( R32G32B32_USCALED,    3, unsigned, FROM_32_USCALED, TO_32_USCALED )
 157 ATTRIB( R32G32_USCALED,       2, unsigned, FROM_32_USCALED, TO_32_USCALED )
 158 ATTRIB( R32_USCALED,          1, unsigned, FROM_32_USCALED, TO_32_USCALED )
 159
 160 ATTRIB( R32G32B32A32_SSCALED, 4, int, FROM_32_SSCALED, TO_32_SSCALED )
 161 ATTRIB( R32G32B32_SSCALED,    3, int, FROM_32_SSCALED, TO_32_SSCALED )
 162 ATTRIB( R32G32_SSCALED,       2, int, FROM_32_SSCALED, TO_32_SSCALED )
 163 ATTRIB( R32_SSCALED,          1, int, FROM_32_SSCALED, TO_32_SSCALED )
 164
 165 ATTRIB( R32G32B32A32_UNORM, 4, unsigned, FROM_32_UNORM, TO_32_UNORM )
 166 ATTRIB( R32G32B32_UNORM,    3, unsigned, FROM_32_UNORM, TO_32_UNORM )
 167 ATTRIB( R32G32_UNORM,       2, unsigned, FROM_32_UNORM, TO_32_UNORM )
 168 ATTRIB( R32_UNORM,          1, unsigned, FROM_32_UNORM, TO_32_UNORM )
 169
 170 ATTRIB( R32G32B32A32_SNORM, 4, int, FROM_32_SNORM, TO_32_SNORM )
 171 ATTRIB( R32G32B32_SNORM,    3, int, FROM_32_SNORM, TO_32_SNORM )
 172 ATTRIB( R32G32_SNORM,       2, int, FROM_32_SNORM, TO_32_SNORM )
 173 ATTRIB( R32_SNORM,          1, int, FROM_32_SNORM, TO_32_SNORM )
 174
 175 ATTRIB( R16G16B16A16_USCALED, 4, ushort, FROM_16_USCALED, TO_16_USCALED )
 176 ATTRIB( R16G16B16_USCALED,    3, ushort, FROM_16_USCALED, TO_16_USCALED )
 177 ATTRIB( R16G16_USCALED,       2, ushort, FROM_16_USCALED, TO_16_USCALED )
 178 ATTRIB( R16_USCALED,          1, ushort, FROM_16_USCALED, TO_16_USCALED )
 179
 180 ATTRIB( R16G16B16A16_SSCALED, 4, short, FROM_16_SSCALED, TO_16_SSCALED )
 181 ATTRIB( R16G16B16_SSCALED,    3, short, FROM_16_SSCALED, TO_16_SSCALED )
 182 ATTRIB( R16G16_SSCALED,       2, short, FROM_16_SSCALED, TO_16_SSCALED )
 183 ATTRIB( R16_SSCALED,          1, short, FROM_16_SSCALED, TO_16_SSCALED )
 184
 185 ATTRIB( R16G16B16A16_UNORM, 4, ushort, FROM_16_UNORM, TO_16_UNORM )
 186 ATTRIB( R16G16B16_UNORM,    3, ushort, FROM_16_UNORM, TO_16_UNORM )
 187 ATTRIB( R16G16_UNORM,       2, ushort, FROM_16_UNORM, TO_16_UNORM )
 188 ATTRIB( R16_UNORM,          1, ushort, FROM_16_UNORM, TO_16_UNORM )
 189
 190 ATTRIB( R16G16B16A16_SNORM, 4, short, FROM_16_SNORM, TO_16_SNORM )
 191 ATTRIB( R16G16B16_SNORM,    3, short, FROM_16_SNORM, TO_16_SNORM )
 192 ATTRIB( R16G16_SNORM,       2, short, FROM_16_SNORM, TO_16_SNORM )
 193 ATTRIB( R16_SNORM,          1, short, FROM_16_SNORM, TO_16_SNORM )
 194
 195 ATTRIB( R8G8B8A8_USCALED,   4, ubyte, FROM_8_USCALED, TO_8_USCALED )
 196 ATTRIB( R8G8B8_USCALED,     3, ubyte, FROM_8_USCALED, TO_8_USCALED )
 197 ATTRIB( R8G8_USCALED,       2, ubyte, FROM_8_USCALED, TO_8_USCALED )
 198 ATTRIB( R8_USCALED,         1, ubyte, FROM_8_USCALED, TO_8_USCALED )
 199
 200 ATTRIB( R8G8B8A8_SSCALED,  4, char, FROM_8_SSCALED, TO_8_SSCALED )
 201 ATTRIB( R8G8B8_SSCALED,    3, char, FROM_8_SSCALED, TO_8_SSCALED )
 202 ATTRIB( R8G8_SSCALED,      2, char, FROM_8_SSCALED, TO_8_SSCALED )
 203 ATTRIB( R8_SSCALED,        1, char, FROM_8_SSCALED, TO_8_SSCALED )
 204
 205 ATTRIB( R8G8B8A8_UNORM,  4, ubyte, FROM_8_UNORM, TO_8_UNORM )
 206 ATTRIB( R8G8B8_UNORM,    3, ubyte, FROM_8_UNORM, TO_8_UNORM )
 207 ATTRIB( R8G8_UNORM,      2, ubyte, FROM_8_UNORM, TO_8_UNORM )
 208 ATTRIB( R8_UNORM,        1, ubyte, FROM_8_UNORM, TO_8_UNORM )
 209
 210 ATTRIB( R8G8B8A8_SNORM,  4, char, FROM_8_SNORM, TO_8_SNORM )
 211 ATTRIB( R8G8B8_SNORM,    3, char, FROM_8_SNORM, TO_8_SNORM )
 212 ATTRIB( R8G8_SNORM,      2, char, FROM_8_SNORM, TO_8_SNORM )
 213 ATTRIB( R8_SNORM,        1, char, FROM_8_SNORM, TO_8_SNORM )
 214
 215 ATTRIB( A8R8G8B8_UNORM,       4, ubyte, FROM_8_UNORM, TO_8_UNORM )
 216 //ATTRIB( R8G8B8A8_UNORM,       4, ubyte, FROM_8_UNORM, TO_8_UNORM )
 217
 218
 219
 220 static void
 221 fetch_B8G8R8A8_UNORM(const void *ptr, float *attrib)
 222 {
 223    attrib[2] = FROM_8_UNORM(0);
 224    attrib[1] = FROM_8_UNORM(1);
 225    attrib[0] = FROM_8_UNORM(2);
 226    attrib[3] = FROM_8_UNORM(3);
 227 }
 228
 229 static void
 230 emit_B8G8R8A8_UNORM( const float *attrib, void *ptr)
 231 {
 232    ubyte *out = (ubyte *)ptr;
 233    out[2] = TO_8_UNORM(attrib[0]);
 234    out[1] = TO_8_UNORM(attrib[1]);
 235    out[0] = TO_8_UNORM(attrib[2]);
 236    out[3] = TO_8_UNORM(attrib[3]);
 237 }
 238
 239 static void
 240 fetch_NULL( const void *ptr, float *attrib )
 241 {
 242    attrib[0] = 0;
 243    attrib[1] = 0;
 244    attrib[2] = 0;
 245    attrib[3] = 1;
 246 }
 247
 248 static void
 249 emit_NULL( const float *attrib, void *ptr )
 250 {
 251    /* do nothing is the only sensible option */
 252 }
 253
 254 static fetch_func get_fetch_func( enum pipe_format format )
 255 {
 256    switch (format) {
 257    case PIPE_FORMAT_R64_FLOAT:
 258       return &fetch_R64_FLOAT;
 259    case PIPE_FORMAT_R64G64_FLOAT:
 260       return &fetch_R64G64_FLOAT;
 261    case PIPE_FORMAT_R64G64B64_FLOAT:
 262       return &fetch_R64G64B64_FLOAT;
 263    case PIPE_FORMAT_R64G64B64A64_FLOAT:
 264       return &fetch_R64G64B64A64_FLOAT;
 265
 266    case PIPE_FORMAT_R32_FLOAT:
 267       return &fetch_R32_FLOAT;
 268    case PIPE_FORMAT_R32G32_FLOAT:
 269       return &fetch_R32G32_FLOAT;
 270    case PIPE_FORMAT_R32G32B32_FLOAT:
 271       return &fetch_R32G32B32_FLOAT;
 272    case PIPE_FORMAT_R32G32B32A32_FLOAT:
 273       return &fetch_R32G32B32A32_FLOAT;
 274
 275    case PIPE_FORMAT_R32_UNORM:
 276       return &fetch_R32_UNORM;
 277    case PIPE_FORMAT_R32G32_UNORM:
 278       return &fetch_R32G32_UNORM;
 279    case PIPE_FORMAT_R32G32B32_UNORM:
 280       return &fetch_R32G32B32_UNORM;
 281    case PIPE_FORMAT_R32G32B32A32_UNORM:
 282       return &fetch_R32G32B32A32_UNORM;
 283
 284    case PIPE_FORMAT_R32_USCALED:
 285       return &fetch_R32_USCALED;
 286    case PIPE_FORMAT_R32G32_USCALED:
 287       return &fetch_R32G32_USCALED;
 288    case PIPE_FORMAT_R32G32B32_USCALED:
 289       return &fetch_R32G32B32_USCALED;
 290    case PIPE_FORMAT_R32G32B32A32_USCALED:
 291       return &fetch_R32G32B32A32_USCALED;
 292
 293    case PIPE_FORMAT_R32_SNORM:
 294       return &fetch_R32_SNORM;
 295    case PIPE_FORMAT_R32G32_SNORM:
 296       return &fetch_R32G32_SNORM;
 297    case PIPE_FORMAT_R32G32B32_SNORM:
 298       return &fetch_R32G32B32_SNORM;
 299    case PIPE_FORMAT_R32G32B32A32_SNORM:
 300       return &fetch_R32G32B32A32_SNORM;
 301
 302    case PIPE_FORMAT_R32_SSCALED:
 303       return &fetch_R32_SSCALED;
 304    case PIPE_FORMAT_R32G32_SSCALED:
 305       return &fetch_R32G32_SSCALED;
 306    case PIPE_FORMAT_R32G32B32_SSCALED:
 307       return &fetch_R32G32B32_SSCALED;
 308    case PIPE_FORMAT_R32G32B32A32_SSCALED:
 309       return &fetch_R32G32B32A32_SSCALED;
 310
 311    case PIPE_FORMAT_R16_UNORM:
 312       return &fetch_R16_UNORM;
 313    case PIPE_FORMAT_R16G16_UNORM:
 314       return &fetch_R16G16_UNORM;
 315    case PIPE_FORMAT_R16G16B16_UNORM:
 316       return &fetch_R16G16B16_UNORM;
 317    case PIPE_FORMAT_R16G16B16A16_UNORM:
 318       return &fetch_R16G16B16A16_UNORM;
 319
 320    case PIPE_FORMAT_R16_USCALED:
 321       return &fetch_R16_USCALED;
 322    case PIPE_FORMAT_R16G16_USCALED:
 323       return &fetch_R16G16_USCALED;
 324    case PIPE_FORMAT_R16G16B16_USCALED:
 325       return &fetch_R16G16B16_USCALED;
 326    case PIPE_FORMAT_R16G16B16A16_USCALED:
 327       return &fetch_R16G16B16A16_USCALED;
 328
 329    case PIPE_FORMAT_R16_SNORM:
 330       return &fetch_R16_SNORM;
 331    case PIPE_FORMAT_R16G16_SNORM:
 332       return &fetch_R16G16_SNORM;
 333    case PIPE_FORMAT_R16G16B16_SNORM:
 334       return &fetch_R16G16B16_SNORM;
 335    case PIPE_FORMAT_R16G16B16A16_SNORM:
 336       return &fetch_R16G16B16A16_SNORM;
 337
 338    case PIPE_FORMAT_R16_SSCALED:
 339       return &fetch_R16_SSCALED;
 340    case PIPE_FORMAT_R16G16_SSCALED:
 341       return &fetch_R16G16_SSCALED;
 342    case PIPE_FORMAT_R16G16B16_SSCALED:
 343       return &fetch_R16G16B16_SSCALED;
 344    case PIPE_FORMAT_R16G16B16A16_SSCALED:
 345       return &fetch_R16G16B16A16_SSCALED;
 346
 347    case PIPE_FORMAT_R8_UNORM:
 348       return &fetch_R8_UNORM;
 349    case PIPE_FORMAT_R8G8_UNORM:
 350       return &fetch_R8G8_UNORM;
 351    case PIPE_FORMAT_R8G8B8_UNORM:
 352       return &fetch_R8G8B8_UNORM;
 353    case PIPE_FORMAT_R8G8B8A8_UNORM:
 354       return &fetch_R8G8B8A8_UNORM;
 355
 356    case PIPE_FORMAT_R8_USCALED:
 357       return &fetch_R8_USCALED;
 358    case PIPE_FORMAT_R8G8_USCALED:
 359       return &fetch_R8G8_USCALED;
 360    case PIPE_FORMAT_R8G8B8_USCALED:
 361       return &fetch_R8G8B8_USCALED;
 362    case PIPE_FORMAT_R8G8B8A8_USCALED:
 363       return &fetch_R8G8B8A8_USCALED;
 364
 365    case PIPE_FORMAT_R8_SNORM:
 366       return &fetch_R8_SNORM;
 367    case PIPE_FORMAT_R8G8_SNORM:
 368       return &fetch_R8G8_SNORM;
 369    case PIPE_FORMAT_R8G8B8_SNORM:
 370       return &fetch_R8G8B8_SNORM;
 371    case PIPE_FORMAT_R8G8B8A8_SNORM:
 372       return &fetch_R8G8B8A8_SNORM;
 373
 374    case PIPE_FORMAT_R8_SSCALED:
 375       return &fetch_R8_SSCALED;
 376    case PIPE_FORMAT_R8G8_SSCALED:
 377       return &fetch_R8G8_SSCALED;
 378    case PIPE_FORMAT_R8G8B8_SSCALED:
 379       return &fetch_R8G8B8_SSCALED;
 380    case PIPE_FORMAT_R8G8B8A8_SSCALED:
 381       return &fetch_R8G8B8A8_SSCALED;
 382
 383    case PIPE_FORMAT_A8R8G8B8_UNORM:
 384       return &fetch_A8R8G8B8_UNORM;
 385
 386    case PIPE_FORMAT_B8G8R8A8_UNORM:
 387       return &fetch_B8G8R8A8_UNORM;
 388
 389    default:
 390       assert(0);
 391       return &fetch_NULL;
 392    }
 393 }
 394
 395
 396
 397
 398 static emit_func get_emit_func( enum pipe_format format )
 399 {
 400    switch (format) {
 401    case PIPE_FORMAT_R64_FLOAT:
 402       return &emit_R64_FLOAT;
 403    case PIPE_FORMAT_R64G64_FLOAT:
 404       return &emit_R64G64_FLOAT;
 405    case PIPE_FORMAT_R64G64B64_FLOAT:
 406       return &emit_R64G64B64_FLOAT;
 407    case PIPE_FORMAT_R64G64B64A64_FLOAT:
 408       return &emit_R64G64B64A64_FLOAT;
 409
 410    case PIPE_FORMAT_R32_FLOAT:
 411       return &emit_R32_FLOAT;
 412    case PIPE_FORMAT_R32G32_FLOAT:
 413       return &emit_R32G32_FLOAT;
 414    case PIPE_FORMAT_R32G32B32_FLOAT:
 415       return &emit_R32G32B32_FLOAT;
 416    case PIPE_FORMAT_R32G32B32A32_FLOAT:
 417       return &emit_R32G32B32A32_FLOAT;
 418
 419    case PIPE_FORMAT_R32_UNORM:
 420       return &emit_R32_UNORM;
 421    case PIPE_FORMAT_R32G32_UNORM:
 422       return &emit_R32G32_UNORM;
 423    case PIPE_FORMAT_R32G32B32_UNORM:
 424       return &emit_R32G32B32_UNORM;
 425    case PIPE_FORMAT_R32G32B32A32_UNORM:
 426       return &emit_R32G32B32A32_UNORM;
 427
 428    case PIPE_FORMAT_R32_USCALED:
 429       return &emit_R32_USCALED;
 430    case PIPE_FORMAT_R32G32_USCALED:
 431       return &emit_R32G32_USCALED;
 432    case PIPE_FORMAT_R32G32B32_USCALED:
 433       return &emit_R32G32B32_USCALED;
 434    case PIPE_FORMAT_R32G32B32A32_USCALED:
 435       return &emit_R32G32B32A32_USCALED;
 436
 437    case PIPE_FORMAT_R32_SNORM:
 438       return &emit_R32_SNORM;
 439    case PIPE_FORMAT_R32G32_SNORM:
 440       return &emit_R32G32_SNORM;
 441    case PIPE_FORMAT_R32G32B32_SNORM:
 442       return &emit_R32G32B32_SNORM;
 443    case PIPE_FORMAT_R32G32B32A32_SNORM:
 444       return &emit_R32G32B32A32_SNORM;
 445
 446    case PIPE_FORMAT_R32_SSCALED:
 447       return &emit_R32_SSCALED;
 448    case PIPE_FORMAT_R32G32_SSCALED:
 449       return &emit_R32G32_SSCALED;
 450    case PIPE_FORMAT_R32G32B32_SSCALED:
 451       return &emit_R32G32B32_SSCALED;
 452    case PIPE_FORMAT_R32G32B32A32_SSCALED:
 453       return &emit_R32G32B32A32_SSCALED;
 454
 455    case PIPE_FORMAT_R16_UNORM:
 456       return &emit_R16_UNORM;
 457    case PIPE_FORMAT_R16G16_UNORM:
 458       return &emit_R16G16_UNORM;
 459    case PIPE_FORMAT_R16G16B16_UNORM:
 460       return &emit_R16G16B16_UNORM;
 461    case PIPE_FORMAT_R16G16B16A16_UNORM:
 462       return &emit_R16G16B16A16_UNORM;
 463
 464    case PIPE_FORMAT_R16_USCALED:
 465       return &emit_R16_USCALED;
 466    case PIPE_FORMAT_R16G16_USCALED:
 467       return &emit_R16G16_USCALED;
 468    case PIPE_FORMAT_R16G16B16_USCALED:
 469       return &emit_R16G16B16_USCALED;
 470    case PIPE_FORMAT_R16G16B16A16_USCALED:
 471       return &emit_R16G16B16A16_USCALED;
 472
 473    case PIPE_FORMAT_R16_SNORM:
 474       return &emit_R16_SNORM;
 475    case PIPE_FORMAT_R16G16_SNORM:
 476       return &emit_R16G16_SNORM;
 477    case PIPE_FORMAT_R16G16B16_SNORM:
 478       return &emit_R16G16B16_SNORM;
 479    case PIPE_FORMAT_R16G16B16A16_SNORM:
 480       return &emit_R16G16B16A16_SNORM;
 481
 482    case PIPE_FORMAT_R16_SSCALED:
 483       return &emit_R16_SSCALED;
 484    case PIPE_FORMAT_R16G16_SSCALED:
 485       return &emit_R16G16_SSCALED;
 486    case PIPE_FORMAT_R16G16B16_SSCALED:
 487       return &emit_R16G16B16_SSCALED;
 488    case PIPE_FORMAT_R16G16B16A16_SSCALED:
 489       return &emit_R16G16B16A16_SSCALED;
 490
 491    case PIPE_FORMAT_R8_UNORM:
 492       return &emit_R8_UNORM;
 493    case PIPE_FORMAT_R8G8_UNORM:
 494       return &emit_R8G8_UNORM;
 495    case PIPE_FORMAT_R8G8B8_UNORM:
 496       return &emit_R8G8B8_UNORM;
 497    case PIPE_FORMAT_R8G8B8A8_UNORM:
 498       return &emit_R8G8B8A8_UNORM;
 499
 500    case PIPE_FORMAT_R8_USCALED:
 501       return &emit_R8_USCALED;
 502    case PIPE_FORMAT_R8G8_USCALED:
 503       return &emit_R8G8_USCALED;
 504    case PIPE_FORMAT_R8G8B8_USCALED:
 505       return &emit_R8G8B8_USCALED;
 506    case PIPE_FORMAT_R8G8B8A8_USCALED:
 507       return &emit_R8G8B8A8_USCALED;
 508
 509    case PIPE_FORMAT_R8_SNORM:
 510       return &emit_R8_SNORM;
 511    case PIPE_FORMAT_R8G8_SNORM:
 512       return &emit_R8G8_SNORM;
 513    case PIPE_FORMAT_R8G8B8_SNORM:
 514       return &emit_R8G8B8_SNORM;
 515    case PIPE_FORMAT_R8G8B8A8_SNORM:
 516       return &emit_R8G8B8A8_SNORM;
 517
 518    case PIPE_FORMAT_R8_SSCALED:
 519       return &emit_R8_SSCALED;
 520    case PIPE_FORMAT_R8G8_SSCALED:
 521       return &emit_R8G8_SSCALED;
 522    case PIPE_FORMAT_R8G8B8_SSCALED:
 523       return &emit_R8G8B8_SSCALED;
 524    case PIPE_FORMAT_R8G8B8A8_SSCALED:
 525       return &emit_R8G8B8A8_SSCALED;
 526
 527    case PIPE_FORMAT_A8R8G8B8_UNORM:
 528       return &emit_A8R8G8B8_UNORM;
 529
 530    case PIPE_FORMAT_B8G8R8A8_UNORM:
 531       return &emit_B8G8R8A8_UNORM;
 532
 533    default:
 534       assert(0);
 535       return &emit_NULL;
 536    }
 537 }
 538
 539
 540
 541 /**
 542  * Fetch vertex attributes for 'count' vertices.
 543  */
 544 static void PIPE_CDECL generic_run_elts( struct translate *translate,
 545                                          const unsigned *elts,
 546                                          unsigned count,
 547                                          void *output_buffer )
 548 {
 549    struct translate_generic *tg = translate_generic(translate);
 550    char *vert = output_buffer;
 551    unsigned nr_attrs = tg->nr_attrib;
 552    unsigned attr;
 553    unsigned i;
 554
 555    /* loop over vertex attributes (vertex shader inputs)
 556     */
 557    for (i = 0; i < count; i++) {
 558       unsigned elt = *elts++;
 559
 560       for (attr = 0; attr < nr_attrs; attr++) {
 561          float data[4];
 562
 563          const char *src = (tg->attrib[attr].input_ptr +
 564                             tg->attrib[attr].input_stride * elt);
 565
 566          char *dst = (vert +
 567                       tg->attrib[attr].output_offset);
 568
 569          tg->attrib[attr].fetch( src, data );
 570
 571          if (0) debug_printf("vert %d/%d attr %d: %f %f %f %f\n",
 572                              i, elt, attr, data[0], data[1], data[2], data[3]);
 573
 574          tg->attrib[attr].emit( data, dst );
 575       }
 576
 577       vert += tg->translate.key.output_stride;
 578    }
 579 }
 580
 581
 582
 583 static void PIPE_CDECL generic_run( struct translate *translate,
 584                                     unsigned start,
 585                                     unsigned count,
 586                                     void *output_buffer )
 587 {
 588    struct translate_generic *tg = translate_generic(translate);
 589    char *vert = output_buffer;
 590    unsigned nr_attrs = tg->nr_attrib;
 591    unsigned attr;
 592    unsigned i;
 593
 594    /* loop over vertex attributes (vertex shader inputs)
 595     */
 596    for (i = 0; i < count; i++) {
 597       unsigned elt = start + i;
 598
 599       for (attr = 0; attr < nr_attrs; attr++) {
 600          float data[4];
 601
 602          const char *src = (tg->attrib[attr].input_ptr +
 603                             tg->attrib[attr].input_stride * elt);
 604
 605          char *dst = (vert +
 606                       tg->attrib[attr].output_offset);
 607
 608          tg->attrib[attr].fetch( src, data );
 609
 610          if (0) debug_printf("vert %d attr %d: %f %f %f %f\n",
 611                              i, attr, data[0], data[1], data[2], data[3]);
 612
 613          tg->attrib[attr].emit( data, dst );
 614       }
 615
 616       vert += tg->translate.key.output_stride;
 617    }
 618 }
 619
 620
 621
 622 static void generic_set_buffer( struct translate *translate,
 623                                 unsigned buf,
 624                                 const void *ptr,
 625                                 unsigned stride )
 626 {
 627    struct translate_generic *tg = translate_generic(translate);
 628    unsigned i;
 629
 630    for (i = 0; i < tg->nr_attrib; i++) {
 631       if (tg->attrib[i].buffer == buf) {
 632          tg->attrib[i].input_ptr = ((char *)ptr +
 633                                     tg->attrib[i].input_offset);
 634          tg->attrib[i].input_stride = stride;
 635       }
 636    }
 637 }
 638
 639
 640 static void generic_release( struct translate *translate )
 641 {
 642    /* Refcount?
 643     */
 644    FREE(translate);
 645 }
 646
 647 struct translate *translate_generic_create( const struct translate_key *key )
 648 {
 649    struct translate_generic *tg = CALLOC_STRUCT(translate_generic);
 650    unsigned i;
 651
 652    if (tg == NULL)
 653       return NULL;
 654
 655    tg->translate.key = *key;
 656    tg->translate.release = generic_release;
 657    tg->translate.set_buffer = generic_set_buffer;
 658    tg->translate.run_elts = generic_run_elts;
 659    tg->translate.run = generic_run;
 660
 661    for (i = 0; i < key->nr_elements; i++) {
 662
 663       tg->attrib[i].fetch = get_fetch_func(key->element[i].input_format);
 664       tg->attrib[i].buffer = key->element[i].input_buffer;
 665       tg->attrib[i].input_offset = key->element[i].input_offset;
 666
 667       tg->attrib[i].emit = get_emit_func(key->element[i].output_format);
 668       tg->attrib[i].output_offset = key->element[i].output_offset;
 669
 670    }
 671
 672    tg->nr_attrib = key->nr_elements;
 673
 674
 675    return &tg->translate;
 676 }