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 "util/u_memory.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       enum translate_element_type type;
  50
  51       fetch_func fetch;
  52       unsigned buffer;
  53       unsigned input_offset;
  54       unsigned instance_divisor;
  55
  56       emit_func emit;
  57       unsigned output_offset;
  58
  59       char *input_ptr;
  60       unsigned input_stride;
  61
  62    } attrib[PIPE_MAX_ATTRIBS];
  63
  64    unsigned nr_attrib;
  65 };
  66
  67
  68 static struct translate_generic *translate_generic( struct translate *translate )
  69 {
  70    return (struct translate_generic *)translate;
  71 }
  72
  73 /**
  74  * Fetch a float[4] vertex attribute from memory, doing format/type
  75  * conversion as needed.
  76  *
  77  * This is probably needed/dupliocated elsewhere, eg format
  78  * conversion, texture sampling etc.
  79  */
  80 #define ATTRIB( NAME, SZ, TYPE, FROM, TO )              \
  81 static void                                             \
  82 fetch_##NAME(const void *ptr, float *attrib)            \
  83 {                                                       \
  84    const float defaults[4] = { 0.0f,0.0f,0.0f,1.0f };   \
  85    unsigned i;                                          \
  86                                                         \
  87    for (i = 0; i < SZ; i++) {                           \
  88       attrib[i] = FROM(i);                              \
  89    }                                                    \
  90                                                         \
  91    for (; i < 4; i++) {                                 \
  92       attrib[i] = defaults[i];                          \
  93    }                                                    \
  94 }                                                       \
  95                                                         \
  96 static void                                             \
  97 emit_##NAME(const float *attrib, void *ptr)             \
  98 {  \
  99    unsigned i;                                          \
 100    TYPE *out = (TYPE *)ptr;                             \
 101                                                         \
 102    for (i = 0; i < SZ; i++) {                           \
 103       out[i] = TO(attrib[i]);                           \
 104    }                                                    \
 105 }
 106
 107
 108 #define FROM_64_FLOAT(i)   ((float) ((double *) ptr)[i])
 109 #define FROM_32_FLOAT(i)   (((float *) ptr)[i])
 110
 111 #define FROM_8_USCALED(i)  ((float) ((unsigned char *) ptr)[i])
 112 #define FROM_16_USCALED(i) ((float) ((unsigned short *) ptr)[i])
 113 #define FROM_32_USCALED(i) ((float) ((unsigned int *) ptr)[i])
 114
 115 #define FROM_8_SSCALED(i)  ((float) ((char *) ptr)[i])
 116 #define FROM_16_SSCALED(i) ((float) ((short *) ptr)[i])
 117 #define FROM_32_SSCALED(i) ((float) ((int *) ptr)[i])
 118
 119 #define FROM_8_UNORM(i)    ((float) ((unsigned char *) ptr)[i] / 255.0f)
 120 #define FROM_16_UNORM(i)   ((float) ((unsigned short *) ptr)[i] / 65535.0f)
 121 #define FROM_32_UNORM(i)   ((float) ((unsigned int *) ptr)[i] / 4294967295.0f)
 122
 123 #define FROM_8_SNORM(i)    ((float) ((char *) ptr)[i] / 127.0f)
 124 #define FROM_16_SNORM(i)   ((float) ((short *) ptr)[i] / 32767.0f)
 125 #define FROM_32_SNORM(i)   ((float) ((int *) ptr)[i] / 2147483647.0f)
 126
 127 #define FROM_32_FIXED(i)   (((int *) ptr)[i] / 65536.0f)
 128
 129 #define TO_64_FLOAT(x)   ((double) x)
 130 #define TO_32_FLOAT(x)   (x)
 131
 132 #define TO_8_USCALED(x)  ((unsigned char) x)
 133 #define TO_16_USCALED(x) ((unsigned short) x)
 134 #define TO_32_USCALED(x) ((unsigned int) x)
 135
 136 #define TO_8_SSCALED(x)  ((char) x)
 137 #define TO_16_SSCALED(x) ((short) x)
 138 #define TO_32_SSCALED(x) ((int) x)
 139
 140 #define TO_8_UNORM(x)    ((unsigned char) (x * 255.0f))
 141 #define TO_16_UNORM(x)   ((unsigned short) (x * 65535.0f))
 142 #define TO_32_UNORM(x)   ((unsigned int) (x * 4294967295.0f))
 143
 144 #define TO_8_SNORM(x)    ((char) (x * 127.0f))
 145 #define TO_16_SNORM(x)   ((short) (x * 32767.0f))
 146 #define TO_32_SNORM(x)   ((int) (x * 2147483647.0f))
 147
 148 #define TO_32_FIXED(x)   ((int) (x * 65536.0f))
 149
 150
 151
 152 ATTRIB( R64G64B64A64_FLOAT,   4, double, FROM_64_FLOAT, TO_64_FLOAT )
 153 ATTRIB( R64G64B64_FLOAT,      3, double, FROM_64_FLOAT, TO_64_FLOAT )
 154 ATTRIB( R64G64_FLOAT,         2, double, FROM_64_FLOAT, TO_64_FLOAT )
 155 ATTRIB( R64_FLOAT,            1, double, FROM_64_FLOAT, TO_64_FLOAT )
 156
 157 ATTRIB( R32G32B32A32_FLOAT,   4, float, FROM_32_FLOAT, TO_32_FLOAT )
 158 ATTRIB( R32G32B32_FLOAT,      3, float, FROM_32_FLOAT, TO_32_FLOAT )
 159 ATTRIB( R32G32_FLOAT,         2, float, FROM_32_FLOAT, TO_32_FLOAT )
 160 ATTRIB( R32_FLOAT,            1, float, FROM_32_FLOAT, TO_32_FLOAT )
 161
 162 ATTRIB( R32G32B32A32_USCALED, 4, unsigned, FROM_32_USCALED, TO_32_USCALED )
 163 ATTRIB( R32G32B32_USCALED,    3, unsigned, FROM_32_USCALED, TO_32_USCALED )
 164 ATTRIB( R32G32_USCALED,       2, unsigned, FROM_32_USCALED, TO_32_USCALED )
 165 ATTRIB( R32_USCALED,          1, unsigned, FROM_32_USCALED, TO_32_USCALED )
 166
 167 ATTRIB( R32G32B32A32_SSCALED, 4, int, FROM_32_SSCALED, TO_32_SSCALED )
 168 ATTRIB( R32G32B32_SSCALED,    3, int, FROM_32_SSCALED, TO_32_SSCALED )
 169 ATTRIB( R32G32_SSCALED,       2, int, FROM_32_SSCALED, TO_32_SSCALED )
 170 ATTRIB( R32_SSCALED,          1, int, FROM_32_SSCALED, TO_32_SSCALED )
 171
 172 ATTRIB( R32G32B32A32_UNORM, 4, unsigned, FROM_32_UNORM, TO_32_UNORM )
 173 ATTRIB( R32G32B32_UNORM,    3, unsigned, FROM_32_UNORM, TO_32_UNORM )
 174 ATTRIB( R32G32_UNORM,       2, unsigned, FROM_32_UNORM, TO_32_UNORM )
 175 ATTRIB( R32_UNORM,          1, unsigned, FROM_32_UNORM, TO_32_UNORM )
 176
 177 ATTRIB( R32G32B32A32_SNORM, 4, int, FROM_32_SNORM, TO_32_SNORM )
 178 ATTRIB( R32G32B32_SNORM,    3, int, FROM_32_SNORM, TO_32_SNORM )
 179 ATTRIB( R32G32_SNORM,       2, int, FROM_32_SNORM, TO_32_SNORM )
 180 ATTRIB( R32_SNORM,          1, int, FROM_32_SNORM, TO_32_SNORM )
 181
 182 ATTRIB( R16G16B16A16_USCALED, 4, ushort, FROM_16_USCALED, TO_16_USCALED )
 183 ATTRIB( R16G16B16_USCALED,    3, ushort, FROM_16_USCALED, TO_16_USCALED )
 184 ATTRIB( R16G16_USCALED,       2, ushort, FROM_16_USCALED, TO_16_USCALED )
 185 ATTRIB( R16_USCALED,          1, ushort, FROM_16_USCALED, TO_16_USCALED )
 186
 187 ATTRIB( R16G16B16A16_SSCALED, 4, short, FROM_16_SSCALED, TO_16_SSCALED )
 188 ATTRIB( R16G16B16_SSCALED,    3, short, FROM_16_SSCALED, TO_16_SSCALED )
 189 ATTRIB( R16G16_SSCALED,       2, short, FROM_16_SSCALED, TO_16_SSCALED )
 190 ATTRIB( R16_SSCALED,          1, short, FROM_16_SSCALED, TO_16_SSCALED )
 191
 192 ATTRIB( R16G16B16A16_UNORM, 4, ushort, FROM_16_UNORM, TO_16_UNORM )
 193 ATTRIB( R16G16B16_UNORM,    3, ushort, FROM_16_UNORM, TO_16_UNORM )
 194 ATTRIB( R16G16_UNORM,       2, ushort, FROM_16_UNORM, TO_16_UNORM )
 195 ATTRIB( R16_UNORM,          1, ushort, FROM_16_UNORM, TO_16_UNORM )
 196
 197 ATTRIB( R16G16B16A16_SNORM, 4, short, FROM_16_SNORM, TO_16_SNORM )
 198 ATTRIB( R16G16B16_SNORM,    3, short, FROM_16_SNORM, TO_16_SNORM )
 199 ATTRIB( R16G16_SNORM,       2, short, FROM_16_SNORM, TO_16_SNORM )
 200 ATTRIB( R16_SNORM,          1, short, FROM_16_SNORM, TO_16_SNORM )
 201
 202 ATTRIB( R8G8B8A8_USCALED,   4, ubyte, FROM_8_USCALED, TO_8_USCALED )
 203 ATTRIB( R8G8B8_USCALED,     3, ubyte, FROM_8_USCALED, TO_8_USCALED )
 204 ATTRIB( R8G8_USCALED,       2, ubyte, FROM_8_USCALED, TO_8_USCALED )
 205 ATTRIB( R8_USCALED,         1, ubyte, FROM_8_USCALED, TO_8_USCALED )
 206
 207 ATTRIB( R8G8B8A8_SSCALED,  4, char, FROM_8_SSCALED, TO_8_SSCALED )
 208 ATTRIB( R8G8B8_SSCALED,    3, char, FROM_8_SSCALED, TO_8_SSCALED )
 209 ATTRIB( R8G8_SSCALED,      2, char, FROM_8_SSCALED, TO_8_SSCALED )
 210 ATTRIB( R8_SSCALED,        1, char, FROM_8_SSCALED, TO_8_SSCALED )
 211
 212 ATTRIB( R8G8B8A8_UNORM,  4, ubyte, FROM_8_UNORM, TO_8_UNORM )
 213 ATTRIB( R8G8B8_UNORM,    3, ubyte, FROM_8_UNORM, TO_8_UNORM )
 214 ATTRIB( R8G8_UNORM,      2, ubyte, FROM_8_UNORM, TO_8_UNORM )
 215 ATTRIB( R8_UNORM,        1, ubyte, FROM_8_UNORM, TO_8_UNORM )
 216
 217 ATTRIB( R8G8B8A8_SNORM,  4, char, FROM_8_SNORM, TO_8_SNORM )
 218 ATTRIB( R8G8B8_SNORM,    3, char, FROM_8_SNORM, TO_8_SNORM )
 219 ATTRIB( R8G8_SNORM,      2, char, FROM_8_SNORM, TO_8_SNORM )
 220 ATTRIB( R8_SNORM,        1, char, FROM_8_SNORM, TO_8_SNORM )
 221
 222 ATTRIB( A8R8G8B8_UNORM,       4, ubyte, FROM_8_UNORM, TO_8_UNORM )
 223 /*ATTRIB( R8G8B8A8_UNORM,       4, ubyte, FROM_8_UNORM, TO_8_UNORM )*/
 224
 225 ATTRIB( R32G32B32A32_FIXED,   4, int, FROM_32_FIXED, TO_32_FIXED )
 226 ATTRIB( R32G32B32_FIXED,      3, int, FROM_32_FIXED, TO_32_FIXED )
 227 ATTRIB( R32G32_FIXED,         2, int, FROM_32_FIXED, TO_32_FIXED )
 228 ATTRIB( R32_FIXED,            1, int, FROM_32_FIXED, TO_32_FIXED )
 229
 230
 231
 232 static void
 233 fetch_B8G8R8A8_UNORM(const void *ptr, float *attrib)
 234 {
 235    attrib[2] = FROM_8_UNORM(0);
 236    attrib[1] = FROM_8_UNORM(1);
 237    attrib[0] = FROM_8_UNORM(2);
 238    attrib[3] = FROM_8_UNORM(3);
 239 }
 240
 241 static void
 242 emit_B8G8R8A8_UNORM( const float *attrib, void *ptr)
 243 {
 244    ubyte *out = (ubyte *)ptr;
 245    out[2] = TO_8_UNORM(attrib[0]);
 246    out[1] = TO_8_UNORM(attrib[1]);
 247    out[0] = TO_8_UNORM(attrib[2]);
 248    out[3] = TO_8_UNORM(attrib[3]);
 249 }
 250
 251 static void
 252 fetch_NULL( const void *ptr, float *attrib )
 253 {
 254    attrib[0] = 0;
 255    attrib[1] = 0;
 256    attrib[2] = 0;
 257    attrib[3] = 1;
 258 }
 259
 260 static void
 261 emit_NULL( const float *attrib, void *ptr )
 262 {
 263    /* do nothing is the only sensible option */
 264 }
 265
 266 static fetch_func get_fetch_func( enum pipe_format format )
 267 {
 268    switch (format) {
 269    case PIPE_FORMAT_R64_FLOAT:
 270       return &fetch_R64_FLOAT;
 271    case PIPE_FORMAT_R64G64_FLOAT:
 272       return &fetch_R64G64_FLOAT;
 273    case PIPE_FORMAT_R64G64B64_FLOAT:
 274       return &fetch_R64G64B64_FLOAT;
 275    case PIPE_FORMAT_R64G64B64A64_FLOAT:
 276       return &fetch_R64G64B64A64_FLOAT;
 277
 278    case PIPE_FORMAT_R32_FLOAT:
 279       return &fetch_R32_FLOAT;
 280    case PIPE_FORMAT_R32G32_FLOAT:
 281       return &fetch_R32G32_FLOAT;
 282    case PIPE_FORMAT_R32G32B32_FLOAT:
 283       return &fetch_R32G32B32_FLOAT;
 284    case PIPE_FORMAT_R32G32B32A32_FLOAT:
 285       return &fetch_R32G32B32A32_FLOAT;
 286
 287    case PIPE_FORMAT_R32_UNORM:
 288       return &fetch_R32_UNORM;
 289    case PIPE_FORMAT_R32G32_UNORM:
 290       return &fetch_R32G32_UNORM;
 291    case PIPE_FORMAT_R32G32B32_UNORM:
 292       return &fetch_R32G32B32_UNORM;
 293    case PIPE_FORMAT_R32G32B32A32_UNORM:
 294       return &fetch_R32G32B32A32_UNORM;
 295
 296    case PIPE_FORMAT_R32_USCALED:
 297       return &fetch_R32_USCALED;
 298    case PIPE_FORMAT_R32G32_USCALED:
 299       return &fetch_R32G32_USCALED;
 300    case PIPE_FORMAT_R32G32B32_USCALED:
 301       return &fetch_R32G32B32_USCALED;
 302    case PIPE_FORMAT_R32G32B32A32_USCALED:
 303       return &fetch_R32G32B32A32_USCALED;
 304
 305    case PIPE_FORMAT_R32_SNORM:
 306       return &fetch_R32_SNORM;
 307    case PIPE_FORMAT_R32G32_SNORM:
 308       return &fetch_R32G32_SNORM;
 309    case PIPE_FORMAT_R32G32B32_SNORM:
 310       return &fetch_R32G32B32_SNORM;
 311    case PIPE_FORMAT_R32G32B32A32_SNORM:
 312       return &fetch_R32G32B32A32_SNORM;
 313
 314    case PIPE_FORMAT_R32_SSCALED:
 315       return &fetch_R32_SSCALED;
 316    case PIPE_FORMAT_R32G32_SSCALED:
 317       return &fetch_R32G32_SSCALED;
 318    case PIPE_FORMAT_R32G32B32_SSCALED:
 319       return &fetch_R32G32B32_SSCALED;
 320    case PIPE_FORMAT_R32G32B32A32_SSCALED:
 321       return &fetch_R32G32B32A32_SSCALED;
 322
 323    case PIPE_FORMAT_R16_UNORM:
 324       return &fetch_R16_UNORM;
 325    case PIPE_FORMAT_R16G16_UNORM:
 326       return &fetch_R16G16_UNORM;
 327    case PIPE_FORMAT_R16G16B16_UNORM:
 328       return &fetch_R16G16B16_UNORM;
 329    case PIPE_FORMAT_R16G16B16A16_UNORM:
 330       return &fetch_R16G16B16A16_UNORM;
 331
 332    case PIPE_FORMAT_R16_USCALED:
 333       return &fetch_R16_USCALED;
 334    case PIPE_FORMAT_R16G16_USCALED:
 335       return &fetch_R16G16_USCALED;
 336    case PIPE_FORMAT_R16G16B16_USCALED:
 337       return &fetch_R16G16B16_USCALED;
 338    case PIPE_FORMAT_R16G16B16A16_USCALED:
 339       return &fetch_R16G16B16A16_USCALED;
 340
 341    case PIPE_FORMAT_R16_SNORM:
 342       return &fetch_R16_SNORM;
 343    case PIPE_FORMAT_R16G16_SNORM:
 344       return &fetch_R16G16_SNORM;
 345    case PIPE_FORMAT_R16G16B16_SNORM:
 346       return &fetch_R16G16B16_SNORM;
 347    case PIPE_FORMAT_R16G16B16A16_SNORM:
 348       return &fetch_R16G16B16A16_SNORM;
 349
 350    case PIPE_FORMAT_R16_SSCALED:
 351       return &fetch_R16_SSCALED;
 352    case PIPE_FORMAT_R16G16_SSCALED:
 353       return &fetch_R16G16_SSCALED;
 354    case PIPE_FORMAT_R16G16B16_SSCALED:
 355       return &fetch_R16G16B16_SSCALED;
 356    case PIPE_FORMAT_R16G16B16A16_SSCALED:
 357       return &fetch_R16G16B16A16_SSCALED;
 358
 359    case PIPE_FORMAT_R8_UNORM:
 360       return &fetch_R8_UNORM;
 361    case PIPE_FORMAT_R8G8_UNORM:
 362       return &fetch_R8G8_UNORM;
 363    case PIPE_FORMAT_R8G8B8_UNORM:
 364       return &fetch_R8G8B8_UNORM;
 365    case PIPE_FORMAT_R8G8B8A8_UNORM:
 366       return &fetch_R8G8B8A8_UNORM;
 367
 368    case PIPE_FORMAT_R8_USCALED:
 369       return &fetch_R8_USCALED;
 370    case PIPE_FORMAT_R8G8_USCALED:
 371       return &fetch_R8G8_USCALED;
 372    case PIPE_FORMAT_R8G8B8_USCALED:
 373       return &fetch_R8G8B8_USCALED;
 374    case PIPE_FORMAT_R8G8B8A8_USCALED:
 375       return &fetch_R8G8B8A8_USCALED;
 376
 377    case PIPE_FORMAT_R8_SNORM:
 378       return &fetch_R8_SNORM;
 379    case PIPE_FORMAT_R8G8_SNORM:
 380       return &fetch_R8G8_SNORM;
 381    case PIPE_FORMAT_R8G8B8_SNORM:
 382       return &fetch_R8G8B8_SNORM;
 383    case PIPE_FORMAT_R8G8B8A8_SNORM:
 384       return &fetch_R8G8B8A8_SNORM;
 385
 386    case PIPE_FORMAT_R8_SSCALED:
 387       return &fetch_R8_SSCALED;
 388    case PIPE_FORMAT_R8G8_SSCALED:
 389       return &fetch_R8G8_SSCALED;
 390    case PIPE_FORMAT_R8G8B8_SSCALED:
 391       return &fetch_R8G8B8_SSCALED;
 392    case PIPE_FORMAT_R8G8B8A8_SSCALED:
 393       return &fetch_R8G8B8A8_SSCALED;
 394
 395    case PIPE_FORMAT_A8R8G8B8_UNORM:
 396       return &fetch_A8R8G8B8_UNORM;
 397
 398    case PIPE_FORMAT_B8G8R8A8_UNORM:
 399       return &fetch_B8G8R8A8_UNORM;
 400
 401    case PIPE_FORMAT_R32_FIXED:
 402       return &fetch_R32_FIXED;
 403    case PIPE_FORMAT_R32G32_FIXED:
 404       return &fetch_R32G32_FIXED;
 405    case PIPE_FORMAT_R32G32B32_FIXED:
 406       return &fetch_R32G32B32_FIXED;
 407    case PIPE_FORMAT_R32G32B32A32_FIXED:
 408       return &fetch_R32G32B32A32_FIXED;
 409
 410    default:
 411       assert(0);
 412       return &fetch_NULL;
 413    }
 414 }
 415
 416
 417
 418
 419 static emit_func get_emit_func( enum pipe_format format )
 420 {
 421    /* silence warnings */
 422    (void) emit_R32G32B32A32_FIXED;
 423    (void) emit_R32G32B32_FIXED;
 424    (void) emit_R32G32_FIXED;
 425    (void) emit_R32_FIXED;
 426
 427    switch (format) {
 428    case PIPE_FORMAT_R64_FLOAT:
 429       return &emit_R64_FLOAT;
 430    case PIPE_FORMAT_R64G64_FLOAT:
 431       return &emit_R64G64_FLOAT;
 432    case PIPE_FORMAT_R64G64B64_FLOAT:
 433       return &emit_R64G64B64_FLOAT;
 434    case PIPE_FORMAT_R64G64B64A64_FLOAT:
 435       return &emit_R64G64B64A64_FLOAT;
 436
 437    case PIPE_FORMAT_R32_FLOAT:
 438       return &emit_R32_FLOAT;
 439    case PIPE_FORMAT_R32G32_FLOAT:
 440       return &emit_R32G32_FLOAT;
 441    case PIPE_FORMAT_R32G32B32_FLOAT:
 442       return &emit_R32G32B32_FLOAT;
 443    case PIPE_FORMAT_R32G32B32A32_FLOAT:
 444       return &emit_R32G32B32A32_FLOAT;
 445
 446    case PIPE_FORMAT_R32_UNORM:
 447       return &emit_R32_UNORM;
 448    case PIPE_FORMAT_R32G32_UNORM:
 449       return &emit_R32G32_UNORM;
 450    case PIPE_FORMAT_R32G32B32_UNORM:
 451       return &emit_R32G32B32_UNORM;
 452    case PIPE_FORMAT_R32G32B32A32_UNORM:
 453       return &emit_R32G32B32A32_UNORM;
 454
 455    case PIPE_FORMAT_R32_USCALED:
 456       return &emit_R32_USCALED;
 457    case PIPE_FORMAT_R32G32_USCALED:
 458       return &emit_R32G32_USCALED;
 459    case PIPE_FORMAT_R32G32B32_USCALED:
 460       return &emit_R32G32B32_USCALED;
 461    case PIPE_FORMAT_R32G32B32A32_USCALED:
 462       return &emit_R32G32B32A32_USCALED;
 463
 464    case PIPE_FORMAT_R32_SNORM:
 465       return &emit_R32_SNORM;
 466    case PIPE_FORMAT_R32G32_SNORM:
 467       return &emit_R32G32_SNORM;
 468    case PIPE_FORMAT_R32G32B32_SNORM:
 469       return &emit_R32G32B32_SNORM;
 470    case PIPE_FORMAT_R32G32B32A32_SNORM:
 471       return &emit_R32G32B32A32_SNORM;
 472
 473    case PIPE_FORMAT_R32_SSCALED:
 474       return &emit_R32_SSCALED;
 475    case PIPE_FORMAT_R32G32_SSCALED:
 476       return &emit_R32G32_SSCALED;
 477    case PIPE_FORMAT_R32G32B32_SSCALED:
 478       return &emit_R32G32B32_SSCALED;
 479    case PIPE_FORMAT_R32G32B32A32_SSCALED:
 480       return &emit_R32G32B32A32_SSCALED;
 481
 482    case PIPE_FORMAT_R16_UNORM:
 483       return &emit_R16_UNORM;
 484    case PIPE_FORMAT_R16G16_UNORM:
 485       return &emit_R16G16_UNORM;
 486    case PIPE_FORMAT_R16G16B16_UNORM:
 487       return &emit_R16G16B16_UNORM;
 488    case PIPE_FORMAT_R16G16B16A16_UNORM:
 489       return &emit_R16G16B16A16_UNORM;
 490
 491    case PIPE_FORMAT_R16_USCALED:
 492       return &emit_R16_USCALED;
 493    case PIPE_FORMAT_R16G16_USCALED:
 494       return &emit_R16G16_USCALED;
 495    case PIPE_FORMAT_R16G16B16_USCALED:
 496       return &emit_R16G16B16_USCALED;
 497    case PIPE_FORMAT_R16G16B16A16_USCALED:
 498       return &emit_R16G16B16A16_USCALED;
 499
 500    case PIPE_FORMAT_R16_SNORM:
 501       return &emit_R16_SNORM;
 502    case PIPE_FORMAT_R16G16_SNORM:
 503       return &emit_R16G16_SNORM;
 504    case PIPE_FORMAT_R16G16B16_SNORM:
 505       return &emit_R16G16B16_SNORM;
 506    case PIPE_FORMAT_R16G16B16A16_SNORM:
 507       return &emit_R16G16B16A16_SNORM;
 508
 509    case PIPE_FORMAT_R16_SSCALED:
 510       return &emit_R16_SSCALED;
 511    case PIPE_FORMAT_R16G16_SSCALED:
 512       return &emit_R16G16_SSCALED;
 513    case PIPE_FORMAT_R16G16B16_SSCALED:
 514       return &emit_R16G16B16_SSCALED;
 515    case PIPE_FORMAT_R16G16B16A16_SSCALED:
 516       return &emit_R16G16B16A16_SSCALED;
 517
 518    case PIPE_FORMAT_R8_UNORM:
 519       return &emit_R8_UNORM;
 520    case PIPE_FORMAT_R8G8_UNORM:
 521       return &emit_R8G8_UNORM;
 522    case PIPE_FORMAT_R8G8B8_UNORM:
 523       return &emit_R8G8B8_UNORM;
 524    case PIPE_FORMAT_R8G8B8A8_UNORM:
 525       return &emit_R8G8B8A8_UNORM;
 526
 527    case PIPE_FORMAT_R8_USCALED:
 528       return &emit_R8_USCALED;
 529    case PIPE_FORMAT_R8G8_USCALED:
 530       return &emit_R8G8_USCALED;
 531    case PIPE_FORMAT_R8G8B8_USCALED:
 532       return &emit_R8G8B8_USCALED;
 533    case PIPE_FORMAT_R8G8B8A8_USCALED:
 534       return &emit_R8G8B8A8_USCALED;
 535
 536    case PIPE_FORMAT_R8_SNORM:
 537       return &emit_R8_SNORM;
 538    case PIPE_FORMAT_R8G8_SNORM:
 539       return &emit_R8G8_SNORM;
 540    case PIPE_FORMAT_R8G8B8_SNORM:
 541       return &emit_R8G8B8_SNORM;
 542    case PIPE_FORMAT_R8G8B8A8_SNORM:
 543       return &emit_R8G8B8A8_SNORM;
 544
 545    case PIPE_FORMAT_R8_SSCALED:
 546       return &emit_R8_SSCALED;
 547    case PIPE_FORMAT_R8G8_SSCALED:
 548       return &emit_R8G8_SSCALED;
 549    case PIPE_FORMAT_R8G8B8_SSCALED:
 550       return &emit_R8G8B8_SSCALED;
 551    case PIPE_FORMAT_R8G8B8A8_SSCALED:
 552       return &emit_R8G8B8A8_SSCALED;
 553
 554    case PIPE_FORMAT_A8R8G8B8_UNORM:
 555       return &emit_A8R8G8B8_UNORM;
 556
 557    case PIPE_FORMAT_B8G8R8A8_UNORM:
 558       return &emit_B8G8R8A8_UNORM;
 559
 560    default:
 561       assert(0);
 562       return &emit_NULL;
 563    }
 564 }
 565
 566
 567
 568 /**
 569  * Fetch vertex attributes for 'count' vertices.
 570  */
 571 static void PIPE_CDECL generic_run_elts( struct translate *translate,
 572                                          const unsigned *elts,
 573                                          unsigned count,
 574                                          unsigned instance_id,
 575                                          void *output_buffer )
 576 {
 577    struct translate_generic *tg = translate_generic(translate);
 578    char *vert = output_buffer;
 579    unsigned nr_attrs = tg->nr_attrib;
 580    unsigned attr;
 581    unsigned i;
 582
 583    /* loop over vertex attributes (vertex shader inputs)
 584     */
 585    for (i = 0; i < count; i++) {
 586       unsigned elt = *elts++;
 587
 588       for (attr = 0; attr < nr_attrs; attr++) {
 589          float data[4];
 590          const char *src;
 591
 592          char *dst = (vert +
 593                       tg->attrib[attr].output_offset);
 594
 595          if (tg->attrib[attr].instance_divisor) {
 596             src = tg->attrib[attr].input_ptr +
 597                   tg->attrib[attr].input_stride *
 598                   (instance_id / tg->attrib[attr].instance_divisor);
 599          } else {
 600             src = tg->attrib[attr].input_ptr +
 601                   tg->attrib[attr].input_stride * elt;
 602          }
 603
 604          tg->attrib[attr].fetch( src, data );
 605
 606          if (0) debug_printf("vert %d/%d attr %d: %f %f %f %f\n",
 607                              i, elt, attr, data[0], data[1], data[2], data[3]);
 608
 609          tg->attrib[attr].emit( data, dst );
 610       }
 611
 612       vert += tg->translate.key.output_stride;
 613    }
 614 }
 615
 616
 617
 618 static void PIPE_CDECL generic_run( struct translate *translate,
 619                                     unsigned start,
 620                                     unsigned count,
 621                                     unsigned instance_id,
 622                                     void *output_buffer )
 623 {
 624    struct translate_generic *tg = translate_generic(translate);
 625    char *vert = output_buffer;
 626    unsigned nr_attrs = tg->nr_attrib;
 627    unsigned attr;
 628    unsigned i;
 629
 630    /* loop over vertex attributes (vertex shader inputs)
 631     */
 632    for (i = 0; i < count; i++) {
 633       unsigned elt = start + i;
 634
 635       for (attr = 0; attr < nr_attrs; attr++) {
 636          float data[4];
 637
 638          char *dst = (vert +
 639                       tg->attrib[attr].output_offset);
 640
 641          if (tg->attrib[attr].type == TRANSLATE_ELEMENT_NORMAL) {
 642             const char *src;
 643
 644             if (tg->attrib[attr].instance_divisor) {
 645                src = tg->attrib[attr].input_ptr +
 646                      tg->attrib[attr].input_stride *
 647                      (instance_id / tg->attrib[attr].instance_divisor);
 648             } else {
 649                src = tg->attrib[attr].input_ptr +
 650                      tg->attrib[attr].input_stride * elt;
 651             }
 652
 653             tg->attrib[attr].fetch( src, data );
 654          } else {
 655             data[0] = (float)instance_id;
 656          }
 657
 658          if (0) debug_printf("vert %d attr %d: %f %f %f %f\n",
 659                              i, attr, data[0], data[1], data[2], data[3]);
 660
 661          tg->attrib[attr].emit( data, dst );
 662       }
 663
 664       vert += tg->translate.key.output_stride;
 665    }
 666 }
 667
 668
 669
 670 static void generic_set_buffer( struct translate *translate,
 671                                 unsigned buf,
 672                                 const void *ptr,
 673                                 unsigned stride )
 674 {
 675    struct translate_generic *tg = translate_generic(translate);
 676    unsigned i;
 677
 678    for (i = 0; i < tg->nr_attrib; i++) {
 679       if (tg->attrib[i].buffer == buf) {
 680          tg->attrib[i].input_ptr = ((char *)ptr +
 681                                     tg->attrib[i].input_offset);
 682          tg->attrib[i].input_stride = stride;
 683       }
 684    }
 685 }
 686
 687
 688 static void generic_release( struct translate *translate )
 689 {
 690    /* Refcount?
 691     */
 692    FREE(translate);
 693 }
 694
 695 struct translate *translate_generic_create( const struct translate_key *key )
 696 {
 697    struct translate_generic *tg = CALLOC_STRUCT(translate_generic);
 698    unsigned i;
 699
 700    if (tg == NULL)
 701       return NULL;
 702
 703    tg->translate.key = *key;
 704    tg->translate.release = generic_release;
 705    tg->translate.set_buffer = generic_set_buffer;
 706    tg->translate.run_elts = generic_run_elts;
 707    tg->translate.run = generic_run;
 708
 709    for (i = 0; i < key->nr_elements; i++) {
 710       tg->attrib[i].type = key->element[i].type;
 711
 712       tg->attrib[i].fetch = get_fetch_func(key->element[i].input_format);
 713       tg->attrib[i].buffer = key->element[i].input_buffer;
 714       tg->attrib[i].input_offset = key->element[i].input_offset;
 715       tg->attrib[i].instance_divisor = key->element[i].instance_divisor;
 716
 717       tg->attrib[i].emit = get_emit_func(key->element[i].output_format);
 718       tg->attrib[i].output_offset = key->element[i].output_offset;
 719
 720    }
 721
 722    tg->nr_attrib = key->nr_elements;
 723
 724
 725    return &tg->translate;
 726 }