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