dlls/wined3d/baseshader.c

   1 /*
   2  * shaders implementation
   3  *
   4  * Copyright 2002-2003 Jason Edmeades
   5  * Copyright 2002-2003 Raphael Junqueira
   6  * Copyright 2004 Christian Costa
   7  * Copyright 2005 Oliver Stieber
   8  * Copyright 2006 Ivan Gyurdiev
   9  * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2.1 of the License, or (at your option) any later version.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  24  */
  25
  26 #include "config.h"
  27 #include <string.h>
  28 #include <stdio.h>
  29 #include "wined3d_private.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(d3d_shader);
  32 WINE_DECLARE_DEBUG_CHANNEL(d3d);
  33
  34 static void shader_dump_param(const DWORD param, const DWORD addr_token, int input, DWORD shader_version);
  35
  36 static inline BOOL shader_is_version_token(DWORD token) {
  37     return shader_is_pshader_version(token) ||
  38            shader_is_vshader_version(token);
  39 }
  40
  41 void shader_buffer_init(struct SHADER_BUFFER *buffer)
  42 {
  43     buffer->buffer = HeapAlloc(GetProcessHeap(), 0, SHADER_PGMSIZE);
  44     buffer->buffer[0] = '\0';
  45     buffer->bsize = 0;
  46     buffer->lineNo = 0;
  47     buffer->newline = TRUE;
  48 }
  49
  50 void shader_buffer_free(struct SHADER_BUFFER *buffer)
  51 {
  52     HeapFree(GetProcessHeap(), 0, buffer->buffer);
  53 }
  54
  55 int shader_vaddline(SHADER_BUFFER* buffer, const char *format, va_list args)
  56 {
  57     char* base = buffer->buffer + buffer->bsize;
  58     int rc;
  59
  60     rc = vsnprintf(base, SHADER_PGMSIZE - 1 - buffer->bsize, format, args);
  61
  62     if (rc < 0 ||                                   /* C89 */
  63         rc > SHADER_PGMSIZE - 1 - buffer->bsize) {  /* C99 */
  64
  65         ERR("The buffer allocated for the shader program string "
  66             "is too small at %d bytes.\n", SHADER_PGMSIZE);
  67         buffer->bsize = SHADER_PGMSIZE - 1;
  68         return -1;
  69     }
  70
  71     if (buffer->newline) {
  72         TRACE("GL HW (%u, %u) : %s", buffer->lineNo + 1, buffer->bsize, base);
  73         buffer->newline = FALSE;
  74     } else {
  75         TRACE("%s", base);
  76     }
  77
  78     buffer->bsize += rc;
  79     if (buffer->buffer[buffer->bsize-1] == '\n') {
  80         buffer->lineNo++;
  81         buffer->newline = TRUE;
  82     }
  83     return 0;
  84 }
  85
  86 int shader_addline(SHADER_BUFFER* buffer, const char *format, ...)
  87 {
  88     int ret;
  89     va_list args;
  90
  91     va_start(args, format);
  92     ret = shader_vaddline(buffer, format, args);
  93     va_end(args);
  94
  95     return ret;
  96 }
  97
  98 void shader_init(struct IWineD3DBaseShaderClass *shader,
  99         IWineD3DDevice *device, const SHADER_OPCODE *instruction_table)
 100 {
 101     shader->ref = 1;
 102     shader->device = device;
 103     shader->shader_ins = instruction_table;
 104     list_init(&shader->linked_programs);
 105 }
 106
 107 const SHADER_OPCODE *shader_get_opcode(const SHADER_OPCODE *opcode_table, DWORD shader_version, DWORD code)
 108 {
 109     DWORD i = 0;
 110
 111     /** TODO: use dichotomic search */
 112     while (opcode_table[i].name)
 113     {
 114         if ((code & WINED3DSI_OPCODE_MASK) == opcode_table[i].opcode
 115                 && shader_version >= opcode_table[i].min_version
 116                 && (!opcode_table[i].max_version || shader_version <= opcode_table[i].max_version))
 117         {
 118             return &opcode_table[i];
 119         }
 120         ++i;
 121     }
 122
 123     FIXME("Unsupported opcode %#x(%d) masked %#x, shader version %#x\n",
 124             code, code, code & WINED3DSI_OPCODE_MASK, shader_version);
 125
 126     return NULL;
 127 }
 128
 129 /* Read a parameter opcode from the input stream,
 130  * and possibly a relative addressing token.
 131  * Return the number of tokens read */
 132 static int shader_get_param(const DWORD *pToken, DWORD shader_version, DWORD *param, DWORD *addr_token)
 133 {
 134     /* PS >= 3.0 have relative addressing (with token)
 135      * VS >= 2.0 have relative addressing (with token)
 136      * VS >= 1.0 < 2.0 have relative addressing (without token)
 137      * The version check below should work in general */
 138
 139     char rel_token = WINED3DSHADER_VERSION_MAJOR(shader_version) >= 2 &&
 140         ((*pToken & WINED3DSHADER_ADDRESSMODE_MASK) == WINED3DSHADER_ADDRMODE_RELATIVE);
 141
 142     *param = *pToken;
 143     *addr_token = rel_token? *(pToken + 1): 0;
 144     return rel_token? 2:1;
 145 }
 146
 147 /* Return the number of parameters to skip for an opcode */
 148 static inline int shader_skip_opcode(const SHADER_OPCODE *curOpcode, DWORD opcode_token, DWORD shader_version)
 149 {
 150    /* Shaders >= 2.0 may contain address tokens, but fortunately they
 151     * have a useful length mask - use it here. Shaders 1.0 contain no such tokens */
 152     return (WINED3DSHADER_VERSION_MAJOR(shader_version) >= 2)
 153             ? ((opcode_token & WINED3DSI_INSTLENGTH_MASK) >> WINED3DSI_INSTLENGTH_SHIFT) : curOpcode->num_params;
 154 }
 155
 156 /* Read the parameters of an unrecognized opcode from the input stream
 157  * Return the number of tokens read.
 158  *
 159  * Note: This function assumes source or destination token format.
 160  * It will not work with specially-formatted tokens like DEF or DCL,
 161  * but hopefully those would be recognized */
 162 static int shader_skip_unrecognized(const DWORD *pToken, DWORD shader_version)
 163 {
 164     int tokens_read = 0;
 165     int i = 0;
 166
 167     /* TODO: Think of a good name for 0x80000000 and replace it with a constant */
 168     while (*pToken & 0x80000000) {
 169
 170         DWORD param, addr_token;
 171         tokens_read += shader_get_param(pToken, shader_version, &param, &addr_token);
 172         pToken += tokens_read;
 173
 174         FIXME("Unrecognized opcode param: token=0x%08x "
 175             "addr_token=0x%08x name=", param, addr_token);
 176         shader_dump_param(param, addr_token, i, shader_version);
 177         FIXME("\n");
 178         ++i;
 179     }
 180     return tokens_read;
 181 }
 182
 183 /* Convert floating point offset relative
 184  * to a register file to an absolute offset for float constants */
 185 static unsigned int shader_get_float_offset(const DWORD reg)
 186 {
 187      unsigned int regnum = reg & WINED3DSP_REGNUM_MASK;
 188      int regtype = shader_get_regtype(reg);
 189
 190      switch (regtype) {
 191         case WINED3DSPR_CONST: return regnum;
 192         case WINED3DSPR_CONST2: return 2048 + regnum;
 193         case WINED3DSPR_CONST3: return 4096 + regnum;
 194         case WINED3DSPR_CONST4: return 6144 + regnum;
 195         default:
 196             FIXME("Unsupported register type: %d\n", regtype);
 197             return regnum;
 198      }
 199 }
 200
 201 static void shader_delete_constant_list(struct list* clist) {
 202
 203     struct list *ptr;
 204     struct local_constant* constant;
 205
 206     ptr = list_head(clist);
 207     while (ptr) {
 208         constant = LIST_ENTRY(ptr, struct local_constant, entry);
 209         ptr = list_next(clist, ptr);
 210         HeapFree(GetProcessHeap(), 0, constant);
 211     }
 212     list_init(clist);
 213 }
 214
 215 static void shader_parse_dst_param(DWORD param, DWORD addr_param, struct wined3d_shader_dst_param *dst)
 216 {
 217     dst->register_type = ((param & WINED3DSP_REGTYPE_MASK) >> WINED3DSP_REGTYPE_SHIFT)
 218             | ((param & WINED3DSP_REGTYPE_MASK2) >> WINED3DSP_REGTYPE_SHIFT2);
 219     dst->register_idx = param & WINED3DSP_REGNUM_MASK;
 220     dst->write_mask = param & WINED3DSP_WRITEMASK_ALL;
 221     dst->modifiers = param & WINED3DSP_DSTMOD_MASK;
 222     dst->token = param;
 223     dst->addr_token = addr_param;
 224 }
 225
 226 /* Note that this does not count the loop register
 227  * as an address register. */
 228
 229 HRESULT shader_get_registers_used(IWineD3DBaseShader *iface, struct shader_reg_maps *reg_maps,
 230         struct wined3d_shader_semantic *semantics_in, struct wined3d_shader_semantic *semantics_out,
 231         const DWORD *byte_code)
 232 {
 233     IWineD3DBaseShaderImpl* This = (IWineD3DBaseShaderImpl*) iface;
 234     const SHADER_OPCODE *shader_ins = This->baseShader.shader_ins;
 235     DWORD shader_version;
 236     unsigned int cur_loop_depth = 0, max_loop_depth = 0;
 237     const DWORD* pToken = byte_code;
 238     char pshader;
 239
 240     /* There are some minor differences between pixel and vertex shaders */
 241
 242     memset(reg_maps->bumpmat, 0, sizeof(reg_maps->bumpmat));
 243     memset(reg_maps->luminanceparams, 0, sizeof(reg_maps->luminanceparams));
 244
 245     /* get_registers_used is called on every compile on some 1.x shaders, which can result
 246      * in stacking up a collection of local constants. Delete the old constants if existing
 247      */
 248     shader_delete_constant_list(&This->baseShader.constantsF);
 249     shader_delete_constant_list(&This->baseShader.constantsB);
 250     shader_delete_constant_list(&This->baseShader.constantsI);
 251
 252     /* The version token is supposed to be the first token */
 253     if (!shader_is_version_token(*pToken))
 254     {
 255         FIXME("First token is not a version token, invalid shader.\n");
 256         return WINED3DERR_INVALIDCALL;
 257     }
 258     reg_maps->shader_version = shader_version = *pToken++;
 259     pshader = shader_is_pshader_version(shader_version);
 260
 261     while (WINED3DVS_END() != *pToken) {
 262         CONST SHADER_OPCODE* curOpcode;
 263         DWORD opcode_token;
 264
 265         /* Skip comments */
 266         if (shader_is_comment(*pToken))
 267         {
 268              DWORD comment_len = (*pToken & WINED3DSI_COMMENTSIZE_MASK) >> WINED3DSI_COMMENTSIZE_SHIFT;
 269              ++pToken;
 270              pToken += comment_len;
 271              continue;
 272         }
 273
 274         /* Fetch opcode */
 275         opcode_token = *pToken++;
 276         curOpcode = shader_get_opcode(shader_ins, shader_version, opcode_token);
 277
 278         /* Unhandled opcode, and its parameters */
 279         if (NULL == curOpcode) {
 280            while (*pToken & 0x80000000)
 281                ++pToken;
 282
 283         /* Handle declarations */
 284         } else if (WINED3DSIO_DCL == curOpcode->opcode) {
 285
 286             DWORD usage = *pToken++;
 287             DWORD param = *pToken++;
 288             DWORD regtype = shader_get_regtype(param);
 289             unsigned int regnum = param & WINED3DSP_REGNUM_MASK;
 290
 291             /* Vshader: mark attributes used
 292                Pshader: mark 3.0 input registers used, save token */
 293             if (WINED3DSPR_INPUT == regtype) {
 294
 295                 if (!pshader)
 296                     reg_maps->attributes[regnum] = 1;
 297                 else
 298                     reg_maps->packed_input[regnum] = 1;
 299
 300                 semantics_in[regnum].usage = usage;
 301                 shader_parse_dst_param(param, 0, &semantics_in[regnum].reg);
 302
 303             /* Vshader: mark 3.0 output registers used, save token */
 304             } else if (WINED3DSPR_OUTPUT == regtype) {
 305                 reg_maps->packed_output[regnum] = 1;
 306                 semantics_out[regnum].usage = usage;
 307                 shader_parse_dst_param(param, 0, &semantics_out[regnum].reg);
 308
 309                 if (usage & (WINED3DDECLUSAGE_FOG << WINED3DSP_DCL_USAGE_SHIFT))
 310                     reg_maps->fog = 1;
 311
 312             /* Save sampler usage token */
 313             } else if (WINED3DSPR_SAMPLER == regtype)
 314                 reg_maps->samplers[regnum] = usage;
 315
 316         } else if (WINED3DSIO_DEF == curOpcode->opcode) {
 317
 318             local_constant* lconst = HeapAlloc(GetProcessHeap(), 0, sizeof(local_constant));
 319             if (!lconst) return E_OUTOFMEMORY;
 320             lconst->idx = *pToken & WINED3DSP_REGNUM_MASK;
 321             memcpy(lconst->value, pToken + 1, 4 * sizeof(DWORD));
 322
 323             /* In pixel shader 1.X shaders, the constants are clamped between [-1;1] */
 324             if (WINED3DSHADER_VERSION_MAJOR(shader_version) == 1 && pshader)
 325             {
 326                 float *value = (float *) lconst->value;
 327                 if(value[0] < -1.0) value[0] = -1.0;
 328                 else if(value[0] >  1.0) value[0] =  1.0;
 329                 if(value[1] < -1.0) value[1] = -1.0;
 330                 else if(value[1] >  1.0) value[1] =  1.0;
 331                 if(value[2] < -1.0) value[2] = -1.0;
 332                 else if(value[2] >  1.0) value[2] =  1.0;
 333                 if(value[3] < -1.0) value[3] = -1.0;
 334                 else if(value[3] >  1.0) value[3] =  1.0;
 335             }
 336
 337             list_add_head(&This->baseShader.constantsF, &lconst->entry);
 338             pToken += curOpcode->num_params;
 339
 340         } else if (WINED3DSIO_DEFI == curOpcode->opcode) {
 341
 342             local_constant* lconst = HeapAlloc(GetProcessHeap(), 0, sizeof(local_constant));
 343             if (!lconst) return E_OUTOFMEMORY;
 344             lconst->idx = *pToken & WINED3DSP_REGNUM_MASK;
 345             memcpy(lconst->value, pToken + 1, 4 * sizeof(DWORD));
 346             list_add_head(&This->baseShader.constantsI, &lconst->entry);
 347             pToken += curOpcode->num_params;
 348
 349         } else if (WINED3DSIO_DEFB == curOpcode->opcode) {
 350
 351             local_constant* lconst = HeapAlloc(GetProcessHeap(), 0, sizeof(local_constant));
 352             if (!lconst) return E_OUTOFMEMORY;
 353             lconst->idx = *pToken & WINED3DSP_REGNUM_MASK;
 354             memcpy(lconst->value, pToken + 1, 1 * sizeof(DWORD));
 355             list_add_head(&This->baseShader.constantsB, &lconst->entry);
 356             pToken += curOpcode->num_params;
 357
 358         /* If there's a loop in the shader */
 359         } else if (WINED3DSIO_LOOP == curOpcode->opcode ||
 360                    WINED3DSIO_REP == curOpcode->opcode) {
 361             cur_loop_depth++;
 362             if(cur_loop_depth > max_loop_depth)
 363                 max_loop_depth = cur_loop_depth;
 364             pToken += curOpcode->num_params;
 365
 366             /* Rep and Loop always use an integer constant for the control parameters */
 367             This->baseShader.uses_int_consts = TRUE;
 368         } else if (WINED3DSIO_ENDLOOP == curOpcode->opcode ||
 369                    WINED3DSIO_ENDREP == curOpcode->opcode) {
 370             cur_loop_depth--;
 371
 372         /* For subroutine prototypes */
 373         } else if (WINED3DSIO_LABEL == curOpcode->opcode) {
 374
 375             DWORD snum = *pToken & WINED3DSP_REGNUM_MASK;
 376             reg_maps->labels[snum] = 1;
 377             pToken += curOpcode->num_params;
 378
 379         /* Set texture, address, temporary registers */
 380         } else {
 381             int i, limit;
 382
 383             /* Declare 1.X samplers implicitly, based on the destination reg. number */
 384             if (WINED3DSHADER_VERSION_MAJOR(shader_version) == 1
 385                     && pshader /* Filter different instructions with the same enum values in VS */
 386                     && (WINED3DSIO_TEX == curOpcode->opcode
 387                         || WINED3DSIO_TEXBEM == curOpcode->opcode
 388                         || WINED3DSIO_TEXBEML == curOpcode->opcode
 389                         || WINED3DSIO_TEXDP3TEX == curOpcode->opcode
 390                         || WINED3DSIO_TEXM3x2TEX == curOpcode->opcode
 391                         || WINED3DSIO_TEXM3x3SPEC == curOpcode->opcode
 392                         || WINED3DSIO_TEXM3x3TEX == curOpcode->opcode
 393                         || WINED3DSIO_TEXM3x3VSPEC == curOpcode->opcode
 394                         || WINED3DSIO_TEXREG2AR == curOpcode->opcode
 395                         || WINED3DSIO_TEXREG2GB == curOpcode->opcode
 396                         || WINED3DSIO_TEXREG2RGB == curOpcode->opcode))
 397             {
 398                 /* Fake sampler usage, only set reserved bit and ttype */
 399                 DWORD sampler_code = *pToken & WINED3DSP_REGNUM_MASK;
 400
 401                 TRACE("Setting fake 2D sampler for 1.x pixelshader\n");
 402                 reg_maps->samplers[sampler_code] = (0x1 << 31) | WINED3DSTT_2D;
 403
 404                 /* texbem is only valid with < 1.4 pixel shaders */
 405                 if(WINED3DSIO_TEXBEM  == curOpcode->opcode ||
 406                     WINED3DSIO_TEXBEML == curOpcode->opcode) {
 407                     reg_maps->bumpmat[sampler_code] = TRUE;
 408                     if(WINED3DSIO_TEXBEML == curOpcode->opcode) {
 409                         reg_maps->luminanceparams[sampler_code] = TRUE;
 410                     }
 411                 }
 412             }
 413             if(WINED3DSIO_NRM  == curOpcode->opcode) {
 414                 reg_maps->usesnrm = 1;
 415             } else if(WINED3DSIO_BEM == curOpcode->opcode && pshader) {
 416                 DWORD regnum = *pToken & WINED3DSP_REGNUM_MASK;
 417                 reg_maps->bumpmat[regnum] = TRUE;
 418             } else if(WINED3DSIO_DSY  == curOpcode->opcode) {
 419                 reg_maps->usesdsy = 1;
 420             }
 421
 422             /* This will loop over all the registers and try to
 423              * make a bitmask of the ones we're interested in.
 424              *
 425              * Relative addressing tokens are ignored, but that's
 426              * okay, since we'll catch any address registers when
 427              * they are initialized (required by spec) */
 428
 429             limit = (opcode_token & WINED3DSHADER_INSTRUCTION_PREDICATED)?
 430                 curOpcode->num_params + 1: curOpcode->num_params;
 431
 432             for (i = 0; i < limit; ++i) {
 433
 434                 DWORD param, addr_token, reg, regtype;
 435                 pToken += shader_get_param(pToken, shader_version, &param, &addr_token);
 436
 437                 regtype = shader_get_regtype(param);
 438                 reg = param & WINED3DSP_REGNUM_MASK;
 439
 440                 if (WINED3DSPR_TEXTURE == regtype) { /* vs: WINED3DSPR_ADDR */
 441
 442                     if (pshader)
 443                         reg_maps->texcoord[reg] = 1;
 444                     else
 445                         reg_maps->address[reg] = 1;
 446                 }
 447
 448                 else if (WINED3DSPR_TEMP == regtype)
 449                     reg_maps->temporary[reg] = 1;
 450
 451                 else if (WINED3DSPR_INPUT == regtype) {
 452                     if( !pshader)
 453                         reg_maps->attributes[reg] = 1;
 454                     else {
 455                         if(param & WINED3DSHADER_ADDRMODE_RELATIVE) {
 456                             /* If relative addressing is used, we must assume that all registers
 457                              * are used. Even if it is a construct like v3[aL], we can't assume
 458                              * that v0, v1 and v2 aren't read because aL can be negative
 459                              */
 460                             unsigned int i;
 461                             for(i = 0; i < MAX_REG_INPUT; i++) {
 462                                 ((IWineD3DPixelShaderImpl *) This)->input_reg_used[i] = TRUE;
 463                             }
 464                         } else {
 465                             ((IWineD3DPixelShaderImpl *) This)->input_reg_used[reg] = TRUE;
 466                         }
 467                     }
 468                 }
 469
 470                 else if (WINED3DSPR_RASTOUT == regtype && reg == 1)
 471                     reg_maps->fog = 1;
 472
 473                 else if (WINED3DSPR_MISCTYPE == regtype && reg == 0 && pshader)
 474                     reg_maps->vpos = 1;
 475
 476                 else if(WINED3DSPR_CONST == regtype) {
 477                     if(param & WINED3DSHADER_ADDRMODE_RELATIVE) {
 478                         if(!pshader) {
 479                             if(reg <= ((IWineD3DVertexShaderImpl *) This)->min_rel_offset) {
 480                                 ((IWineD3DVertexShaderImpl *) This)->min_rel_offset = reg;
 481                             } else if(reg >= ((IWineD3DVertexShaderImpl *) This)->max_rel_offset) {
 482                                 ((IWineD3DVertexShaderImpl *) This)->max_rel_offset = reg;
 483                             }
 484                         }
 485                         reg_maps->usesrelconstF = TRUE;
 486                     }
 487                 }
 488                 else if(WINED3DSPR_CONSTINT == regtype) {
 489                     This->baseShader.uses_int_consts = TRUE;
 490                 }
 491                 else if(WINED3DSPR_CONSTBOOL == regtype) {
 492                     This->baseShader.uses_bool_consts = TRUE;
 493                 }
 494
 495                 /* WINED3DSPR_TEXCRDOUT is the same as WINED3DSPR_OUTPUT. _OUTPUT can be > MAX_REG_TEXCRD and is used
 496                  * in >= 3.0 shaders. Filter 3.0 shaders to prevent overflows, and also filter pixel shaders because TECRDOUT
 497                  * isn't used in them, but future register types might cause issues
 498                  */
 499                 else if (WINED3DSPR_TEXCRDOUT == regtype && i == 0 /* Only look at writes */
 500                         && !pshader && WINED3DSHADER_VERSION_MAJOR(shader_version) < 3)
 501                 {
 502                     reg_maps->texcoord_mask[reg] |= shader_get_writemask(param);
 503                 }
 504             }
 505         }
 506     }
 507     ++pToken;
 508     reg_maps->loop_depth = max_loop_depth;
 509
 510     This->baseShader.functionLength = ((char *)pToken - (char *)byte_code);
 511
 512     return WINED3D_OK;
 513 }
 514
 515 static void shader_dump_decl_usage(DWORD decl, DWORD param, DWORD shader_version)
 516 {
 517     DWORD regtype = shader_get_regtype(param);
 518
 519     TRACE("dcl");
 520
 521     if (regtype == WINED3DSPR_SAMPLER) {
 522         DWORD ttype = decl & WINED3DSP_TEXTURETYPE_MASK;
 523
 524         switch (ttype) {
 525             case WINED3DSTT_2D: TRACE("_2d"); break;
 526             case WINED3DSTT_CUBE: TRACE("_cube"); break;
 527             case WINED3DSTT_VOLUME: TRACE("_volume"); break;
 528             default: TRACE("_unknown_ttype(0x%08x)", ttype);
 529        }
 530
 531     } else {
 532
 533         DWORD usage = decl & WINED3DSP_DCL_USAGE_MASK;
 534         DWORD idx = (decl & WINED3DSP_DCL_USAGEINDEX_MASK) >> WINED3DSP_DCL_USAGEINDEX_SHIFT;
 535
 536         /* Pixel shaders 3.0 don't have usage semantics */
 537         if (shader_is_pshader_version(shader_version) && shader_version < WINED3DPS_VERSION(3,0))
 538             return;
 539         else
 540             TRACE("_");
 541
 542         switch(usage) {
 543         case WINED3DDECLUSAGE_POSITION:
 544             TRACE("position%d", idx);
 545             break;
 546         case WINED3DDECLUSAGE_BLENDINDICES:
 547             TRACE("blend");
 548             break;
 549         case WINED3DDECLUSAGE_BLENDWEIGHT:
 550             TRACE("weight");
 551             break;
 552         case WINED3DDECLUSAGE_NORMAL:
 553             TRACE("normal%d", idx);
 554             break;
 555         case WINED3DDECLUSAGE_PSIZE:
 556             TRACE("psize");
 557             break;
 558         case WINED3DDECLUSAGE_COLOR:
 559             if(idx == 0)  {
 560                 TRACE("color");
 561             } else {
 562                 TRACE("specular%d", (idx - 1));
 563             }
 564             break;
 565         case WINED3DDECLUSAGE_TEXCOORD:
 566             TRACE("texture%d", idx);
 567             break;
 568         case WINED3DDECLUSAGE_TANGENT:
 569             TRACE("tangent");
 570             break;
 571         case WINED3DDECLUSAGE_BINORMAL:
 572             TRACE("binormal");
 573             break;
 574         case WINED3DDECLUSAGE_TESSFACTOR:
 575             TRACE("tessfactor");
 576             break;
 577         case WINED3DDECLUSAGE_POSITIONT:
 578             TRACE("positionT%d", idx);
 579             break;
 580         case WINED3DDECLUSAGE_FOG:
 581             TRACE("fog");
 582             break;
 583         case WINED3DDECLUSAGE_DEPTH:
 584             TRACE("depth");
 585             break;
 586         case WINED3DDECLUSAGE_SAMPLE:
 587             TRACE("sample");
 588             break;
 589         default:
 590             FIXME("unknown_semantics(0x%08x)", usage);
 591         }
 592     }
 593 }
 594
 595 static void shader_dump_arr_entry(const DWORD param, const DWORD addr_token,
 596         unsigned int reg, int input, DWORD shader_version)
 597 {
 598     char relative =
 599         ((param & WINED3DSHADER_ADDRESSMODE_MASK) == WINED3DSHADER_ADDRMODE_RELATIVE);
 600
 601     if (relative) {
 602         TRACE("[");
 603         if (addr_token)
 604             shader_dump_param(addr_token, 0, input, shader_version);
 605         else
 606             TRACE("a0.x");
 607         TRACE(" + ");
 608      }
 609      TRACE("%u", reg);
 610      if (relative)
 611          TRACE("]");
 612 }
 613
 614 static void shader_dump_param(const DWORD param, const DWORD addr_token, int input, DWORD shader_version)
 615 {
 616     static const char * const rastout_reg_names[] = { "oPos", "oFog", "oPts" };
 617     static const char * const misctype_reg_names[] = { "vPos", "vFace"};
 618     const char *swizzle_reg_chars = "xyzw";
 619
 620     DWORD reg = param & WINED3DSP_REGNUM_MASK;
 621     DWORD regtype = shader_get_regtype(param);
 622     DWORD modifier = param & WINED3DSP_SRCMOD_MASK;
 623
 624     /* There are some minor differences between pixel and vertex shaders */
 625     char pshader = shader_is_pshader_version(shader_version);
 626
 627     if (input) {
 628         if ( (modifier == WINED3DSPSM_NEG) ||
 629              (modifier == WINED3DSPSM_BIASNEG) ||
 630              (modifier == WINED3DSPSM_SIGNNEG) ||
 631              (modifier == WINED3DSPSM_X2NEG) ||
 632              (modifier == WINED3DSPSM_ABSNEG) )
 633             TRACE("-");
 634         else if (modifier == WINED3DSPSM_COMP)
 635             TRACE("1-");
 636         else if (modifier == WINED3DSPSM_NOT)
 637             TRACE("!");
 638
 639         if (modifier == WINED3DSPSM_ABS || modifier == WINED3DSPSM_ABSNEG)
 640             TRACE("abs(");
 641     }
 642
 643     switch (regtype) {
 644         case WINED3DSPR_TEMP:
 645             TRACE("r%u", reg);
 646             break;
 647         case WINED3DSPR_INPUT:
 648             TRACE("v");
 649             shader_dump_arr_entry(param, addr_token, reg, input, shader_version);
 650             break;
 651         case WINED3DSPR_CONST:
 652         case WINED3DSPR_CONST2:
 653         case WINED3DSPR_CONST3:
 654         case WINED3DSPR_CONST4:
 655             TRACE("c");
 656             shader_dump_arr_entry(param, addr_token, shader_get_float_offset(param), input, shader_version);
 657             break;
 658         case WINED3DSPR_TEXTURE: /* vs: case D3DSPR_ADDR */
 659             TRACE("%c%u", (pshader? 't':'a'), reg);
 660             break;
 661         case WINED3DSPR_RASTOUT:
 662             TRACE("%s", rastout_reg_names[reg]);
 663             break;
 664         case WINED3DSPR_COLOROUT:
 665             TRACE("oC%u", reg);
 666             break;
 667         case WINED3DSPR_DEPTHOUT:
 668             TRACE("oDepth");
 669             break;
 670         case WINED3DSPR_ATTROUT:
 671             TRACE("oD%u", reg);
 672             break;
 673         case WINED3DSPR_TEXCRDOUT:
 674
 675             /* Vertex shaders >= 3.0 use general purpose output registers
 676              * (WINED3DSPR_OUTPUT), which can include an address token */
 677
 678             if (WINED3DSHADER_VERSION_MAJOR(shader_version) >= 3) {
 679                 TRACE("o");
 680                 shader_dump_arr_entry(param, addr_token, reg, input, shader_version);
 681             }
 682             else
 683                TRACE("oT%u", reg);
 684             break;
 685         case WINED3DSPR_CONSTINT:
 686             TRACE("i");
 687             shader_dump_arr_entry(param, addr_token, reg, input, shader_version);
 688             break;
 689         case WINED3DSPR_CONSTBOOL:
 690             TRACE("b");
 691             shader_dump_arr_entry(param, addr_token, reg, input, shader_version);
 692             break;
 693         case WINED3DSPR_LABEL:
 694             TRACE("l%u", reg);
 695             break;
 696         case WINED3DSPR_LOOP:
 697             TRACE("aL");
 698             break;
 699         case WINED3DSPR_SAMPLER:
 700             TRACE("s%u", reg);
 701             break;
 702         case WINED3DSPR_MISCTYPE:
 703             if (reg > 1) {
 704                 FIXME("Unhandled misctype register %d\n", reg);
 705             } else {
 706                 TRACE("%s", misctype_reg_names[reg]);
 707             }
 708             break;
 709         case WINED3DSPR_PREDICATE:
 710             TRACE("p%u", reg);
 711             break;
 712         default:
 713             TRACE("unhandled_rtype(%#x)", regtype);
 714             break;
 715    }
 716
 717    if (!input) {
 718        /* operand output (for modifiers and shift, see dump_ins_modifiers) */
 719
 720        if ((param & WINED3DSP_WRITEMASK_ALL) != WINED3DSP_WRITEMASK_ALL) {
 721            TRACE(".");
 722            if (param & WINED3DSP_WRITEMASK_0) TRACE("%c", swizzle_reg_chars[0]);
 723            if (param & WINED3DSP_WRITEMASK_1) TRACE("%c", swizzle_reg_chars[1]);
 724            if (param & WINED3DSP_WRITEMASK_2) TRACE("%c", swizzle_reg_chars[2]);
 725            if (param & WINED3DSP_WRITEMASK_3) TRACE("%c", swizzle_reg_chars[3]);
 726        }
 727
 728    } else {
 729         /** operand input */
 730         DWORD swizzle = (param & WINED3DSP_SWIZZLE_MASK) >> WINED3DSP_SWIZZLE_SHIFT;
 731         DWORD swizzle_x = swizzle & 0x03;
 732         DWORD swizzle_y = (swizzle >> 2) & 0x03;
 733         DWORD swizzle_z = (swizzle >> 4) & 0x03;
 734         DWORD swizzle_w = (swizzle >> 6) & 0x03;
 735
 736         if (0 != modifier) {
 737             switch (modifier) {
 738                 case WINED3DSPSM_NONE:    break;
 739                 case WINED3DSPSM_NEG:     break;
 740                 case WINED3DSPSM_NOT:     break;
 741                 case WINED3DSPSM_BIAS:    TRACE("_bias"); break;
 742                 case WINED3DSPSM_BIASNEG: TRACE("_bias"); break;
 743                 case WINED3DSPSM_SIGN:    TRACE("_bx2"); break;
 744                 case WINED3DSPSM_SIGNNEG: TRACE("_bx2"); break;
 745                 case WINED3DSPSM_COMP:    break;
 746                 case WINED3DSPSM_X2:      TRACE("_x2"); break;
 747                 case WINED3DSPSM_X2NEG:   TRACE("_x2"); break;
 748                 case WINED3DSPSM_DZ:      TRACE("_dz"); break;
 749                 case WINED3DSPSM_DW:      TRACE("_dw"); break;
 750                 case WINED3DSPSM_ABSNEG:  TRACE(")"); break;
 751                 case WINED3DSPSM_ABS:     TRACE(")"); break;
 752                 default:
 753                     TRACE("_unknown_modifier(%#x)", modifier >> WINED3DSP_SRCMOD_SHIFT);
 754             }
 755         }
 756
 757         /**
 758         * swizzle bits fields:
 759         *  RRGGBBAA
 760         */
 761         if ((WINED3DVS_NOSWIZZLE >> WINED3DVS_SWIZZLE_SHIFT) != swizzle) {
 762             if (swizzle_x == swizzle_y &&
 763                 swizzle_x == swizzle_z &&
 764                 swizzle_x == swizzle_w) {
 765                     TRACE(".%c", swizzle_reg_chars[swizzle_x]);
 766             } else {
 767                 TRACE(".%c%c%c%c",
 768                 swizzle_reg_chars[swizzle_x],
 769                 swizzle_reg_chars[swizzle_y],
 770                 swizzle_reg_chars[swizzle_z],
 771                 swizzle_reg_chars[swizzle_w]);
 772             }
 773         }
 774     }
 775 }
 776
 777 /* Shared code in order to generate the bulk of the shader string.
 778  * NOTE: A description of how to parse tokens can be found on msdn */
 779 void shader_generate_main(IWineD3DBaseShader *iface, SHADER_BUFFER* buffer,
 780         const shader_reg_maps* reg_maps, CONST DWORD* pFunction)
 781 {
 782     IWineD3DBaseShaderImpl* This = (IWineD3DBaseShaderImpl*) iface;
 783     IWineD3DDeviceImpl *device = (IWineD3DDeviceImpl *) This->baseShader.device; /* To access shader backend callbacks */
 784     const SHADER_OPCODE *opcode_table = This->baseShader.shader_ins;
 785     const SHADER_HANDLER *handler_table = device->shader_backend->shader_instruction_handler_table;
 786     DWORD shader_version = reg_maps->shader_version;
 787     struct wined3d_shader_dst_param dst_param;
 788     struct wined3d_shader_instruction ins;
 789     const DWORD *pToken = pFunction;
 790     const SHADER_OPCODE *curOpcode;
 791     SHADER_HANDLER hw_fct;
 792     DWORD i;
 793
 794     /* Initialize current parsing state */
 795     ins.shader = iface;
 796     ins.buffer = buffer;
 797     ins.reg_maps = reg_maps;
 798     ins.dst = &dst_param;
 799     This->baseShader.parse_state.current_row = 0;
 800
 801     while (WINED3DPS_END() != *pToken)
 802     {
 803         DWORD opcode_token;
 804
 805         /* Skip version token */
 806         if (shader_is_version_token(*pToken))
 807         {
 808             ++pToken;
 809             continue;
 810         }
 811
 812         /* Skip comment tokens */
 813         if (shader_is_comment(*pToken))
 814         {
 815             pToken += (*pToken & WINED3DSI_COMMENTSIZE_MASK) >> WINED3DSI_COMMENTSIZE_SHIFT;
 816             ++pToken;
 817             continue;
 818         }
 819
 820         /* Read opcode */
 821         opcode_token = *pToken++;
 822         curOpcode = shader_get_opcode(opcode_table, shader_version, opcode_token);
 823
 824         /* Unknown opcode and its parameters */
 825         if (!curOpcode)
 826         {
 827             FIXME("Unrecognized opcode: token=0x%08x\n", opcode_token);
 828             pToken += shader_skip_unrecognized(pToken, shader_version);
 829             continue;
 830         }
 831
 832         /* Nothing to do */
 833         if (WINED3DSIO_DCL == curOpcode->opcode
 834                 || WINED3DSIO_NOP == curOpcode->opcode
 835                 || WINED3DSIO_DEF == curOpcode->opcode
 836                 || WINED3DSIO_DEFI == curOpcode->opcode
 837                 || WINED3DSIO_DEFB == curOpcode->opcode
 838                 || WINED3DSIO_PHASE == curOpcode->opcode
 839                 || WINED3DSIO_RET == curOpcode->opcode)
 840         {
 841             pToken += shader_skip_opcode(curOpcode, opcode_token, shader_version);
 842             continue;
 843         }
 844
 845         /* Select handler */
 846         hw_fct = handler_table[curOpcode->handler_idx];
 847
 848         /* Unhandled opcode */
 849         if (!hw_fct)
 850         {
 851             FIXME("Can't handle opcode %s in hwShader\n", curOpcode->name);
 852             pToken += shader_skip_opcode(curOpcode, opcode_token, shader_version);
 853             continue;
 854         }
 855
 856         ins.handler_idx = curOpcode->handler_idx;
 857         ins.flags = opcode_token & WINED3D_OPCODESPECIFICCONTROL_MASK;
 858         ins.coissue = opcode_token & WINED3DSI_COISSUE;
 859
 860         /* Destination token */
 861         ins.dst_count = curOpcode->dst_token ? 1 : 0;
 862         if (ins.dst_count)
 863         {
 864             DWORD param, addr_param = 0;
 865             pToken += shader_get_param(pToken, shader_version, &param, &addr_param);
 866             shader_parse_dst_param(param, addr_param, &dst_param);
 867         }
 868
 869         /* Predication token */
 870         if (opcode_token & WINED3DSHADER_INSTRUCTION_PREDICATED) ins.predicate = *pToken++;
 871
 872         /* Other source tokens */
 873         ins.src_count = curOpcode->num_params - curOpcode->dst_token;
 874         for (i = 0; i < ins.src_count; ++i)
 875         {
 876             DWORD param, addr_token = 0;
 877             pToken += shader_get_param(pToken, shader_version, &param, &addr_token);
 878             ins.src[i] = param;
 879             ins.src_addr[i] = addr_token;
 880         }
 881
 882         /* Call appropriate function for output target */
 883         hw_fct(&ins);
 884
 885         /* Process instruction modifiers for GLSL apps ( _sat, etc. ) */
 886         /* FIXME: This should be internal to the shader backend.
 887          * Also, right now this is the only reason "shader_mode" exists. */
 888         if (This->baseShader.shader_mode == SHADER_GLSL) shader_glsl_add_instruction_modifiers(&ins);
 889     }
 890 }
 891
 892 static void shader_dump_ins_modifiers(const DWORD output)
 893 {
 894     DWORD shift = (output & WINED3DSP_DSTSHIFT_MASK) >> WINED3DSP_DSTSHIFT_SHIFT;
 895     DWORD mmask = output & WINED3DSP_DSTMOD_MASK;
 896
 897     switch (shift) {
 898         case 0: break;
 899         case 13: TRACE("_d8"); break;
 900         case 14: TRACE("_d4"); break;
 901         case 15: TRACE("_d2"); break;
 902         case 1: TRACE("_x2"); break;
 903         case 2: TRACE("_x4"); break;
 904         case 3: TRACE("_x8"); break;
 905         default: TRACE("_unhandled_shift(%d)", shift); break;
 906     }
 907
 908     if (mmask & WINED3DSPDM_SATURATE)         TRACE("_sat");
 909     if (mmask & WINED3DSPDM_PARTIALPRECISION) TRACE("_pp");
 910     if (mmask & WINED3DSPDM_MSAMPCENTROID)    TRACE("_centroid");
 911
 912     mmask &= ~(WINED3DSPDM_SATURATE | WINED3DSPDM_PARTIALPRECISION | WINED3DSPDM_MSAMPCENTROID);
 913     if (mmask)
 914         FIXME("_unrecognized_modifier(%#x)", mmask >> WINED3DSP_DSTMOD_SHIFT);
 915 }
 916
 917 void shader_trace_init(const DWORD *pFunction, const SHADER_OPCODE *opcode_table)
 918 {
 919     const DWORD* pToken = pFunction;
 920     const SHADER_OPCODE* curOpcode = NULL;
 921     DWORD shader_version;
 922     DWORD opcode_token;
 923     DWORD i;
 924
 925     TRACE("Parsing %p\n", pFunction);
 926
 927     /* The version token is supposed to be the first token */
 928     if (!shader_is_version_token(*pToken))
 929     {
 930         FIXME("First token is not a version token, invalid shader.\n");
 931         return;
 932     }
 933     shader_version = *pToken++;
 934     TRACE("%s_%u_%u\n", shader_is_pshader_version(shader_version) ? "ps": "vs",
 935             WINED3DSHADER_VERSION_MAJOR(shader_version), WINED3DSHADER_VERSION_MINOR(shader_version));
 936
 937     while (WINED3DVS_END() != *pToken)
 938     {
 939         if (shader_is_comment(*pToken)) /* comment */
 940         {
 941             DWORD comment_len = (*pToken & WINED3DSI_COMMENTSIZE_MASK) >> WINED3DSI_COMMENTSIZE_SHIFT;
 942             ++pToken;
 943             TRACE("//%s\n", (const char*)pToken);
 944             pToken += comment_len;
 945             continue;
 946         }
 947         opcode_token = *pToken++;
 948         curOpcode = shader_get_opcode(opcode_table, shader_version, opcode_token);
 949
 950         if (!curOpcode)
 951         {
 952             int tokens_read;
 953             FIXME("Unrecognized opcode: token=0x%08x\n", opcode_token);
 954             tokens_read = shader_skip_unrecognized(pToken, shader_version);
 955             pToken += tokens_read;
 956         }
 957         else
 958         {
 959             if (curOpcode->opcode == WINED3DSIO_DCL)
 960             {
 961                 DWORD usage = *pToken;
 962                 DWORD param = *(pToken + 1);
 963
 964                 shader_dump_decl_usage(usage, param, shader_version);
 965                 shader_dump_ins_modifiers(param);
 966                 TRACE(" ");
 967                 shader_dump_param(param, 0, 0, shader_version);
 968                 pToken += 2;
 969             }
 970             else if (curOpcode->opcode == WINED3DSIO_DEF)
 971             {
 972                 unsigned int offset = shader_get_float_offset(*pToken);
 973
 974                 TRACE("def c%u = %f, %f, %f, %f", offset,
 975                         *(const float *)(pToken + 1),
 976                         *(const float *)(pToken + 2),
 977                         *(const float *)(pToken + 3),
 978                         *(const float *)(pToken + 4));
 979                 pToken += 5;
 980             }
 981             else if (curOpcode->opcode == WINED3DSIO_DEFI)
 982             {
 983                 TRACE("defi i%u = %d, %d, %d, %d", *pToken & WINED3DSP_REGNUM_MASK,
 984                         *(pToken + 1),
 985                         *(pToken + 2),
 986                         *(pToken + 3),
 987                         *(pToken + 4));
 988                 pToken += 5;
 989             }
 990             else if (curOpcode->opcode == WINED3DSIO_DEFB)
 991             {
 992                 TRACE("defb b%u = %s", *pToken & WINED3DSP_REGNUM_MASK,
 993                         *(pToken + 1)? "true": "false");
 994                 pToken += 2;
 995             }
 996             else
 997             {
 998                 DWORD param, addr_token;
 999                 int tokens_read;
1000
1001                 /* Print out predication source token first - it follows
1002                  * the destination token. */
1003                 if (opcode_token & WINED3DSHADER_INSTRUCTION_PREDICATED)
1004                 {
1005                     TRACE("(");
1006                     shader_dump_param(*(pToken + 2), 0, 1, shader_version);
1007                     TRACE(") ");
1008                 }
1009                 if (opcode_token & WINED3DSI_COISSUE)
1010                 {
1011                     /* PixWin marks instructions with the coissue flag with a '+' */
1012                     TRACE("+");
1013                 }
1014
1015                 TRACE("%s", curOpcode->name);
1016
1017                 if (curOpcode->opcode == WINED3DSIO_IFC
1018                         || curOpcode->opcode == WINED3DSIO_BREAKC)
1019                 {
1020                     DWORD op = (opcode_token & INST_CONTROLS_MASK) >> INST_CONTROLS_SHIFT;
1021
1022                     switch (op)
1023                     {
1024                         case COMPARISON_GT: TRACE("_gt"); break;
1025                         case COMPARISON_EQ: TRACE("_eq"); break;
1026                         case COMPARISON_GE: TRACE("_ge"); break;
1027                         case COMPARISON_LT: TRACE("_lt"); break;
1028                         case COMPARISON_NE: TRACE("_ne"); break;
1029                         case COMPARISON_LE: TRACE("_le"); break;
1030                         default: TRACE("_(%u)", op);
1031                     }
1032                 }
1033                 else if (curOpcode->opcode == WINED3DSIO_TEX
1034                         && shader_version >= WINED3DPS_VERSION(2,0)
1035                         && (opcode_token & WINED3DSI_TEXLD_PROJECT))
1036                 {
1037                     TRACE("p");
1038                 }
1039
1040                 /* Destination token */
1041                 if (curOpcode->dst_token)
1042                 {
1043                     tokens_read = shader_get_param(pToken, shader_version, &param, &addr_token);
1044                     pToken += tokens_read;
1045
1046                     shader_dump_ins_modifiers(param);
1047                     TRACE(" ");
1048                     shader_dump_param(param, addr_token, 0, shader_version);
1049                 }
1050
1051                 /* Predication token - already printed out, just skip it */
1052                 if (opcode_token & WINED3DSHADER_INSTRUCTION_PREDICATED)
1053                 {
1054                     pToken++;
1055                 }
1056
1057                 /* Other source tokens */
1058                 for (i = curOpcode->dst_token; i < curOpcode->num_params; ++i)
1059                 {
1060                     tokens_read = shader_get_param(pToken, shader_version, &param, &addr_token);
1061                     pToken += tokens_read;
1062
1063                     TRACE((i == 0)? " " : ", ");
1064                     shader_dump_param(param, addr_token, 1, shader_version);
1065                 }
1066             }
1067             TRACE("\n");
1068         }
1069     }
1070 }
1071
1072 void shader_cleanup(IWineD3DBaseShader *iface)
1073 {
1074     IWineD3DBaseShaderImpl *This = (IWineD3DBaseShaderImpl *)iface;
1075
1076     ((IWineD3DDeviceImpl *)This->baseShader.device)->shader_backend->shader_destroy(iface);
1077     HeapFree(GetProcessHeap(), 0, This->baseShader.function);
1078     shader_delete_constant_list(&This->baseShader.constantsF);
1079     shader_delete_constant_list(&This->baseShader.constantsB);
1080     shader_delete_constant_list(&This->baseShader.constantsI);
1081     list_remove(&This->baseShader.shader_list_entry);
1082 }
1083
1084 static const SHADER_HANDLER shader_none_instruction_handler_table[WINED3DSIH_TABLE_SIZE] = {0};
1085 static void shader_none_select(IWineD3DDevice *iface, BOOL usePS, BOOL useVS) {}
1086 static void shader_none_select_depth_blt(IWineD3DDevice *iface, enum tex_types tex_type) {}
1087 static void shader_none_deselect_depth_blt(IWineD3DDevice *iface) {}
1088 static void shader_none_update_float_vertex_constants(IWineD3DDevice *iface, UINT start, UINT count) {}
1089 static void shader_none_update_float_pixel_constants(IWineD3DDevice *iface, UINT start, UINT count) {}
1090 static void shader_none_load_constants(IWineD3DDevice *iface, char usePS, char useVS) {}
1091 static void shader_none_destroy(IWineD3DBaseShader *iface) {}
1092 static HRESULT shader_none_alloc(IWineD3DDevice *iface) {return WINED3D_OK;}
1093 static void shader_none_free(IWineD3DDevice *iface) {}
1094 static BOOL shader_none_dirty_const(IWineD3DDevice *iface) {return FALSE;}
1095 static GLuint shader_none_generate_pshader(IWineD3DPixelShader *iface, SHADER_BUFFER *buffer, const struct ps_compile_args *args) {
1096     FIXME("NONE shader backend asked to generate a pixel shader\n");
1097     return 0;
1098 }
1099 static GLuint shader_none_generate_vshader(IWineD3DVertexShader *iface, SHADER_BUFFER *buffer, const struct vs_compile_args *args) {
1100     FIXME("NONE shader backend asked to generate a vertex shader\n");
1101     return 0;
1102 }
1103
1104 #define GLINFO_LOCATION      (*gl_info)
1105 static void shader_none_get_caps(WINED3DDEVTYPE devtype, const WineD3D_GL_Info *gl_info, struct shader_caps *pCaps)
1106 {
1107     /* Set the shader caps to 0 for the none shader backend */
1108     pCaps->VertexShaderVersion  = 0;
1109     pCaps->PixelShaderVersion    = 0;
1110     pCaps->PixelShader1xMaxValue = 0.0;
1111 }
1112 #undef GLINFO_LOCATION
1113 static BOOL shader_none_color_fixup_supported(struct color_fixup_desc fixup)
1114 {
1115     if (TRACE_ON(d3d_shader) && TRACE_ON(d3d))
1116     {
1117         TRACE("Checking support for fixup:\n");
1118         dump_color_fixup_desc(fixup);
1119     }
1120
1121     /* Faked to make some apps happy. */
1122     if (!is_yuv_fixup(fixup))
1123     {
1124         TRACE("[OK]\n");
1125         return TRUE;
1126     }
1127
1128     TRACE("[FAILED]\n");
1129     return FALSE;
1130 }
1131
1132 const shader_backend_t none_shader_backend = {
1133     shader_none_instruction_handler_table,
1134     shader_none_select,
1135     shader_none_select_depth_blt,
1136     shader_none_deselect_depth_blt,
1137     shader_none_update_float_vertex_constants,
1138     shader_none_update_float_pixel_constants,
1139     shader_none_load_constants,
1140     shader_none_destroy,
1141     shader_none_alloc,
1142     shader_none_free,
1143     shader_none_dirty_const,
1144     shader_none_generate_pshader,
1145     shader_none_generate_vshader,
1146     shader_none_get_caps,
1147     shader_none_color_fixup_supported,
1148 };