dlls/wined3d/shader_sm4.c

   1 /*
   2  * Copyright 2009 Henri Verbeet for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20 #include "wine/port.h"
  21
  22 #include "wined3d_private.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(d3d_shader);
  25
  26 #define WINED3D_SM4_INSTRUCTION_MODIFIER        (1 << 31)
  27
  28 #define WINED3D_SM4_INSTRUCTION_LENGTH_SHIFT    24
  29 #define WINED3D_SM4_INSTRUCTION_LENGTH_MASK     (0xf << WINED3D_SM4_INSTRUCTION_LENGTH_SHIFT)
  30
  31 #define WINED3D_SM4_OPCODE_MASK                 0xff
  32
  33 #define WINED3D_SM4_REGISTER_MODIFIER           (1 << 31)
  34
  35 #define WINED3D_SM4_REGISTER_ORDER_SHIFT        20
  36 #define WINED3D_SM4_REGISTER_ORDER_MASK         (0x3 << WINED3D_SM4_REGISTER_ORDER_SHIFT)
  37
  38 #define WINED3D_SM4_REGISTER_TYPE_SHIFT         12
  39 #define WINED3D_SM4_REGISTER_TYPE_MASK          (0xf << WINED3D_SM4_REGISTER_TYPE_SHIFT)
  40
  41 #define WINED3D_SM4_IMMCONST_TYPE_SHIFT         0
  42 #define WINED3D_SM4_IMMCONST_TYPE_MASK          (0x3 << WINED3D_SM4_IMMCONST_TYPE_SHIFT)
  43
  44 #define WINED3D_SM4_WRITEMASK_SHIFT             4
  45 #define WINED3D_SM4_WRITEMASK_MASK              (0xf << WINED3D_SM4_WRITEMASK_SHIFT)
  46
  47 #define WINED3D_SM4_SWIZZLE_SHIFT               4
  48 #define WINED3D_SM4_SWIZZLE_MASK                (0xff << WINED3D_SM4_SWIZZLE_SHIFT)
  49
  50 #define WINED3D_SM4_VERSION_MAJOR(version)      (((version) >> 4) & 0xf)
  51 #define WINED3D_SM4_VERSION_MINOR(version)      (((version) >> 0) & 0xf)
  52
  53 enum wined3d_sm4_opcode
  54 {
  55     WINED3D_SM4_OP_ADD          = 0x00,
  56     WINED3D_SM4_OP_AND          = 0x01,
  57     WINED3D_SM4_OP_BREAK        = 0x02,
  58     WINED3D_SM4_OP_BREAKC       = 0x03,
  59     WINED3D_SM4_OP_CUT          = 0x09,
  60     WINED3D_SM4_OP_DIV          = 0x0e,
  61     WINED3D_SM4_OP_DP3          = 0x10,
  62     WINED3D_SM4_OP_DP4          = 0x11,
  63     WINED3D_SM4_OP_EMIT         = 0x13,
  64     WINED3D_SM4_OP_ENDIF        = 0x15,
  65     WINED3D_SM4_OP_ENDLOOP      = 0x16,
  66     WINED3D_SM4_OP_EXP          = 0x19,
  67     WINED3D_SM4_OP_FRC          = 0x1a,
  68     WINED3D_SM4_OP_FTOI         = 0x1b,
  69     WINED3D_SM4_OP_IADD         = 0x1e,
  70     WINED3D_SM4_OP_IF           = 0x1f,
  71     WINED3D_SM4_OP_IEQ          = 0x20,
  72     WINED3D_SM4_OP_IGE          = 0x21,
  73     WINED3D_SM4_OP_IMUL         = 0x26,
  74     WINED3D_SM4_OP_ITOF         = 0x2b,
  75     WINED3D_SM4_OP_LD           = 0x2d,
  76     WINED3D_SM4_OP_LOG          = 0x2f,
  77     WINED3D_SM4_OP_LOOP         = 0x30,
  78     WINED3D_SM4_OP_LT           = 0x31,
  79     WINED3D_SM4_OP_MAD          = 0x32,
  80     WINED3D_SM4_OP_MIN          = 0x33,
  81     WINED3D_SM4_OP_MAX          = 0x34,
  82     WINED3D_SM4_OP_MOV          = 0x36,
  83     WINED3D_SM4_OP_MOVC         = 0x37,
  84     WINED3D_SM4_OP_MUL          = 0x38,
  85     WINED3D_SM4_OP_RET          = 0x3e,
  86     WINED3D_SM4_OP_RSQ          = 0x44,
  87     WINED3D_SM4_OP_SAMPLE       = 0x45,
  88     WINED3D_SM4_OP_SAMPLE_LOD   = 0x48,
  89     WINED3D_SM4_OP_SAMPLE_GRAD  = 0x49,
  90     WINED3D_SM4_OP_SQRT         = 0x4b,
  91     WINED3D_SM4_OP_SINCOS       = 0x4d,
  92     WINED3D_SM4_OP_UTOF         = 0x56,
  93 };
  94
  95 enum wined3d_sm4_register_type
  96 {
  97     WINED3D_SM4_RT_TEMP         = 0x0,
  98     WINED3D_SM4_RT_INPUT        = 0x1,
  99     WINED3D_SM4_RT_OUTPUT       = 0x2,
 100     WINED3D_SM4_RT_IMMCONST     = 0x4,
 101     WINED3D_SM4_RT_SAMPLER      = 0x6,
 102     WINED3D_SM4_RT_CONSTBUFFER  = 0x8,
 103     WINED3D_SM4_RT_NULL         = 0xd,
 104 };
 105
 106 enum wined3d_sm4_immconst_type
 107 {
 108     WINED3D_SM4_IMMCONST_SCALAR = 0x1,
 109     WINED3D_SM4_IMMCONST_VEC4   = 0x2,
 110 };
 111
 112 struct wined3d_sm4_data
 113 {
 114     struct wined3d_shader_version shader_version;
 115     const DWORD *end;
 116     const struct wined3d_shader_signature *output_signature;
 117 };
 118
 119 struct wined3d_sm4_opcode_info
 120 {
 121     enum wined3d_sm4_opcode opcode;
 122     enum WINED3D_SHADER_INSTRUCTION_HANDLER handler_idx;
 123     UINT dst_count;
 124     UINT src_count;
 125 };
 126
 127 struct sysval_map
 128 {
 129     enum wined3d_sysval_semantic sysval;
 130     WINED3DSHADER_PARAM_REGISTER_TYPE register_type;
 131     UINT register_idx;
 132 };
 133
 134 static const struct wined3d_sm4_opcode_info opcode_table[] =
 135 {
 136     {WINED3D_SM4_OP_ADD,        WINED3DSIH_ADD,         1,  2},
 137     {WINED3D_SM4_OP_AND,        WINED3DSIH_AND,         1,  2},
 138     {WINED3D_SM4_OP_BREAK,      WINED3DSIH_BREAK,       0,  0},
 139     {WINED3D_SM4_OP_BREAKC,     WINED3DSIH_BREAKP,      0,  1},
 140     {WINED3D_SM4_OP_CUT,        WINED3DSIH_CUT,         0,  0},
 141     {WINED3D_SM4_OP_DIV,        WINED3DSIH_DIV,         1,  2},
 142     {WINED3D_SM4_OP_DP3,        WINED3DSIH_DP3,         1,  2},
 143     {WINED3D_SM4_OP_DP4,        WINED3DSIH_DP4,         1,  2},
 144     {WINED3D_SM4_OP_EMIT,       WINED3DSIH_EMIT,        0,  0},
 145     {WINED3D_SM4_OP_ENDIF,      WINED3DSIH_ENDIF,       0,  0},
 146     {WINED3D_SM4_OP_ENDLOOP,    WINED3DSIH_ENDLOOP,     0,  0},
 147     {WINED3D_SM4_OP_EXP,        WINED3DSIH_EXP,         1,  1},
 148     {WINED3D_SM4_OP_FRC,        WINED3DSIH_FRC,         1,  1},
 149     {WINED3D_SM4_OP_FTOI,       WINED3DSIH_FTOI,        1,  1},
 150     {WINED3D_SM4_OP_IADD,       WINED3DSIH_IADD,        1,  2},
 151     {WINED3D_SM4_OP_IF,         WINED3DSIH_IF,          0,  1},
 152     {WINED3D_SM4_OP_IEQ,        WINED3DSIH_IEQ,         1,  2},
 153     {WINED3D_SM4_OP_IGE,        WINED3DSIH_IGE,         1,  2},
 154     {WINED3D_SM4_OP_IMUL,       WINED3DSIH_IMUL,        2,  2},
 155     {WINED3D_SM4_OP_ITOF,       WINED3DSIH_ITOF,        1,  1},
 156     {WINED3D_SM4_OP_LD,         WINED3DSIH_LD,          1,  2},
 157     {WINED3D_SM4_OP_LOG,        WINED3DSIH_LOG,         1,  1},
 158     {WINED3D_SM4_OP_LOOP,       WINED3DSIH_LOOP,        0,  0},
 159     {WINED3D_SM4_OP_LT,         WINED3DSIH_LT,          1,  2},
 160     {WINED3D_SM4_OP_MAD,        WINED3DSIH_MAD,         1,  3},
 161     {WINED3D_SM4_OP_MIN,        WINED3DSIH_MIN,         1,  2},
 162     {WINED3D_SM4_OP_MAX,        WINED3DSIH_MAX,         1,  2},
 163     {WINED3D_SM4_OP_MOV,        WINED3DSIH_MOV,         1,  1},
 164     {WINED3D_SM4_OP_MOVC,       WINED3DSIH_MOVC,        1,  3},
 165     {WINED3D_SM4_OP_MUL,        WINED3DSIH_MUL,         1,  2},
 166     {WINED3D_SM4_OP_RET,        WINED3DSIH_RET,         0,  0},
 167     {WINED3D_SM4_OP_RSQ,        WINED3DSIH_RSQ,         1,  1},
 168     {WINED3D_SM4_OP_SAMPLE,     WINED3DSIH_SAMPLE,      1,  3},
 169     {WINED3D_SM4_OP_SAMPLE_LOD, WINED3DSIH_SAMPLE_LOD,  1,  4},
 170     {WINED3D_SM4_OP_SAMPLE_GRAD,WINED3DSIH_SAMPLE_GRAD, 1,  5},
 171     {WINED3D_SM4_OP_SQRT,       WINED3DSIH_SQRT,        1,  1},
 172     {WINED3D_SM4_OP_SINCOS,     WINED3DSIH_SINCOS,      2,  1},
 173     {WINED3D_SM4_OP_UTOF,       WINED3DSIH_UTOF,        1,  1},
 174 };
 175
 176 static const WINED3DSHADER_PARAM_REGISTER_TYPE register_type_table[] =
 177 {
 178     /* WINED3D_SM4_RT_TEMP */           WINED3DSPR_TEMP,
 179     /* WINED3D_SM4_RT_INPUT */          WINED3DSPR_INPUT,
 180     /* WINED3D_SM4_RT_OUTPUT */         WINED3DSPR_OUTPUT,
 181     /* UNKNOWN */                       0,
 182     /* WINED3D_SM4_RT_IMMCONST */       WINED3DSPR_IMMCONST,
 183     /* UNKNOWN */                       0,
 184     /* WINED3D_SM4_RT_SAMPLER */        WINED3DSPR_SAMPLER,
 185     /* WINED3D_SM4_RT_RESOURCE */       WINED3DSPR_RESOURCE,
 186     /* WINED3D_SM4_RT_CONSTBUFFER */    WINED3DSPR_CONSTBUFFER,
 187     /* UNKNOWN */                       0,
 188     /* UNKNOWN */                       0,
 189     /* UNKNOWN */                       0,
 190     /* UNKNOWN */                       0,
 191     /* WINED3D_SM4_RT_NULL */           WINED3DSPR_NULL,
 192 };
 193
 194 static const struct sysval_map sysval_map[] =
 195 {
 196     {WINED3D_SV_DEPTH,      WINED3DSPR_DEPTHOUT,    0},
 197     {WINED3D_SV_TARGET0,    WINED3DSPR_COLOROUT,    0},
 198     {WINED3D_SV_TARGET1,    WINED3DSPR_COLOROUT,    1},
 199     {WINED3D_SV_TARGET2,    WINED3DSPR_COLOROUT,    2},
 200     {WINED3D_SV_TARGET3,    WINED3DSPR_COLOROUT,    3},
 201     {WINED3D_SV_TARGET4,    WINED3DSPR_COLOROUT,    4},
 202     {WINED3D_SV_TARGET5,    WINED3DSPR_COLOROUT,    5},
 203     {WINED3D_SV_TARGET6,    WINED3DSPR_COLOROUT,    6},
 204     {WINED3D_SV_TARGET7,    WINED3DSPR_COLOROUT,    7},
 205 };
 206
 207 static const struct wined3d_sm4_opcode_info *get_opcode_info(enum wined3d_sm4_opcode opcode)
 208 {
 209     unsigned int i;
 210
 211     for (i = 0; i < sizeof(opcode_table) / sizeof(*opcode_table); ++i)
 212     {
 213         if (opcode == opcode_table[i].opcode) return &opcode_table[i];
 214     }
 215
 216     return NULL;
 217 }
 218
 219 static void map_sysval(enum wined3d_sysval_semantic sysval, struct wined3d_shader_register *reg)
 220 {
 221     unsigned int i;
 222
 223     for (i = 0; i < sizeof(sysval_map) / sizeof(*sysval_map); ++i)
 224     {
 225         if (sysval == sysval_map[i].sysval)
 226         {
 227             reg->type = sysval_map[i].register_type;
 228             reg->idx = sysval_map[i].register_idx;
 229         }
 230     }
 231 }
 232
 233 static void map_register(const struct wined3d_sm4_data *priv, struct wined3d_shader_register *reg)
 234 {
 235     switch (priv->shader_version.type)
 236     {
 237         case WINED3D_SHADER_TYPE_PIXEL:
 238             if (reg->type == WINED3DSPR_OUTPUT)
 239             {
 240                 unsigned int i;
 241                 const struct wined3d_shader_signature *s = priv->output_signature;
 242
 243                 if (!s)
 244                 {
 245                     ERR("Shader has no output signature, unable to map register.\n");
 246                     break;
 247                 }
 248
 249                 for (i = 0; i < s->element_count; ++i)
 250                 {
 251                     if (s->elements[i].register_idx == reg->idx)
 252                     {
 253                         map_sysval(s->elements[i].sysval_semantic, reg);
 254                         break;
 255                     }
 256                 }
 257             }
 258             break;
 259
 260         default:
 261             break;
 262     }
 263 }
 264
 265 static void *shader_sm4_init(const DWORD *byte_code, const struct wined3d_shader_signature *output_signature)
 266 {
 267     struct wined3d_sm4_data *priv = HeapAlloc(GetProcessHeap(), 0, sizeof(*priv));
 268     if (!priv)
 269     {
 270         ERR("Failed to allocate private data\n");
 271         return NULL;
 272     }
 273
 274     priv->output_signature = output_signature;
 275
 276     return priv;
 277 }
 278
 279 static void shader_sm4_free(void *data)
 280 {
 281     HeapFree(GetProcessHeap(), 0, data);
 282 }
 283
 284 static void shader_sm4_read_header(void *data, const DWORD **ptr, struct wined3d_shader_version *shader_version)
 285 {
 286     struct wined3d_sm4_data *priv = data;
 287     DWORD version_token;
 288
 289     priv->end = *ptr;
 290
 291     version_token = *(*ptr)++;
 292     TRACE("version: 0x%08x\n", version_token);
 293
 294     TRACE("token count: %u\n", **ptr);
 295     priv->end += *(*ptr)++;
 296
 297     switch (version_token >> 16)
 298     {
 299         case WINED3D_SM4_PS:
 300             priv->shader_version.type = WINED3D_SHADER_TYPE_PIXEL;
 301             break;
 302
 303         case WINED3D_SM4_VS:
 304             priv->shader_version.type = WINED3D_SHADER_TYPE_VERTEX;
 305             break;
 306
 307         case WINED3D_SM4_GS:
 308             priv->shader_version.type = WINED3D_SHADER_TYPE_GEOMETRY;
 309             break;
 310
 311         default:
 312             FIXME("Unrecognized shader type %#x\n", version_token >> 16);
 313     }
 314     priv->shader_version.major = WINED3D_SM4_VERSION_MAJOR(version_token);
 315     priv->shader_version.minor = WINED3D_SM4_VERSION_MINOR(version_token);
 316
 317     *shader_version = priv->shader_version;
 318 }
 319
 320 static void shader_sm4_read_opcode(void *data, const DWORD **ptr, struct wined3d_shader_instruction *ins,
 321         UINT *param_size)
 322 {
 323     const struct wined3d_sm4_opcode_info *opcode_info;
 324     DWORD token = *(*ptr)++;
 325     DWORD opcode = token & WINED3D_SM4_OPCODE_MASK;
 326
 327     *param_size = ((token & WINED3D_SM4_INSTRUCTION_LENGTH_MASK) >> WINED3D_SM4_INSTRUCTION_LENGTH_SHIFT) - 1;
 328
 329     opcode_info = get_opcode_info(opcode);
 330     if (!opcode_info)
 331     {
 332         FIXME("Unrecognized opcode %#x, token 0x%08x\n", opcode, token);
 333         ins->handler_idx = WINED3DSIH_TABLE_SIZE;
 334         return;
 335     }
 336
 337     ins->handler_idx = opcode_info->handler_idx;
 338     ins->flags = 0;
 339     ins->coissue = 0;
 340     ins->predicate = 0;
 341     ins->dst_count = opcode_info->dst_count;
 342     ins->src_count = opcode_info->src_count;
 343
 344     if (token & WINED3D_SM4_INSTRUCTION_MODIFIER)
 345     {
 346         DWORD modifier = *(*ptr)++;
 347         FIXME("Skipping modifier 0x%08x.\n", modifier);
 348     }
 349 }
 350
 351 static void shader_sm4_read_src_param(void *data, const DWORD **ptr, struct wined3d_shader_src_param *src_param,
 352         struct wined3d_shader_src_param *src_rel_addr)
 353 {
 354     struct wined3d_sm4_data *priv = data;
 355     DWORD token = *(*ptr)++;
 356     enum wined3d_sm4_register_type register_type;
 357     DWORD order;
 358
 359     register_type = (token & WINED3D_SM4_REGISTER_TYPE_MASK) >> WINED3D_SM4_REGISTER_TYPE_SHIFT;
 360     if (register_type >= sizeof(register_type_table) / sizeof(*register_type_table))
 361     {
 362         FIXME("Unhandled register type %#x\n", register_type);
 363         src_param->reg.type = WINED3DSPR_TEMP;
 364     }
 365     else
 366     {
 367         src_param->reg.type = register_type_table[register_type];
 368     }
 369
 370     if (token & WINED3D_SM4_REGISTER_MODIFIER)
 371     {
 372         DWORD modifier = *(*ptr)++;
 373
 374         /* FIXME: This will probably break down at some point. The SM4
 375          * modifiers look like flags, while wined3d currently has an enum
 376          * with possible combinations, e.g. WINED3DSPSM_ABSNEG. */
 377         switch (modifier)
 378         {
 379             case 0x41:
 380                 src_param->modifiers = WINED3DSPSM_NEG;
 381                 break;
 382
 383             case 0x81:
 384                 src_param->modifiers = WINED3DSPSM_ABS;
 385                 break;
 386
 387             default:
 388                 FIXME("Skipping modifier 0x%08x.\n", modifier);
 389                 src_param->modifiers = WINED3DSPSM_NONE;
 390                 break;
 391         }
 392     }
 393     else
 394     {
 395         src_param->modifiers = WINED3DSPSM_NONE;
 396     }
 397
 398     order = (token & WINED3D_SM4_REGISTER_ORDER_MASK) >> WINED3D_SM4_REGISTER_ORDER_SHIFT;
 399
 400     if (order < 1) src_param->reg.idx = ~0U;
 401     else src_param->reg.idx = *(*ptr)++;
 402
 403     if (order < 2) src_param->reg.array_idx = ~0U;
 404     else src_param->reg.array_idx = *(*ptr)++;
 405
 406     if (order > 2) FIXME("Unhandled order %u.\n", order);
 407
 408     if (register_type == WINED3D_SM4_RT_IMMCONST)
 409     {
 410         enum wined3d_sm4_immconst_type immconst_type =
 411                 (token & WINED3D_SM4_IMMCONST_TYPE_MASK) >> WINED3D_SM4_IMMCONST_TYPE_SHIFT;
 412         src_param->swizzle = WINED3DSP_NOSWIZZLE;
 413
 414         switch(immconst_type)
 415         {
 416             case WINED3D_SM4_IMMCONST_SCALAR:
 417                 src_param->reg.immconst_type = WINED3D_IMMCONST_SCALAR;
 418                 memcpy(src_param->reg.immconst_data, *ptr, 1 * sizeof(DWORD));
 419                 *ptr += 1;
 420                 break;
 421
 422             case WINED3D_SM4_IMMCONST_VEC4:
 423                 src_param->reg.immconst_type = WINED3D_IMMCONST_VEC4;
 424                 memcpy(src_param->reg.immconst_data, *ptr, 4 * sizeof(DWORD));
 425                 *ptr += 4;
 426                 break;
 427
 428             default:
 429                 FIXME("Unhandled immediate constant type %#x\n", immconst_type);
 430                 break;
 431         }
 432     }
 433     else
 434     {
 435         src_param->swizzle = (token & WINED3D_SM4_SWIZZLE_MASK) >> WINED3D_SM4_SWIZZLE_SHIFT;
 436     }
 437
 438     src_param->reg.rel_addr = NULL;
 439
 440     map_register(priv, &src_param->reg);
 441 }
 442
 443 static void shader_sm4_read_dst_param(void *data, const DWORD **ptr, struct wined3d_shader_dst_param *dst_param,
 444         struct wined3d_shader_src_param *dst_rel_addr)
 445 {
 446     struct wined3d_sm4_data *priv = data;
 447     DWORD token = *(*ptr)++;
 448     enum wined3d_sm4_register_type register_type;
 449     DWORD order;
 450
 451     register_type = (token & WINED3D_SM4_REGISTER_TYPE_MASK) >> WINED3D_SM4_REGISTER_TYPE_SHIFT;
 452     if (register_type >= sizeof(register_type_table) / sizeof(*register_type_table))
 453     {
 454         FIXME("Unhandled register type %#x\n", register_type);
 455         dst_param->reg.type = WINED3DSPR_TEMP;
 456     }
 457     else
 458     {
 459         dst_param->reg.type = register_type_table[register_type];
 460     }
 461
 462     order = (token & WINED3D_SM4_REGISTER_ORDER_MASK) >> WINED3D_SM4_REGISTER_ORDER_SHIFT;
 463
 464     if (order < 1) dst_param->reg.idx = ~0U;
 465     else dst_param->reg.idx = *(*ptr)++;
 466
 467     if (order < 2) dst_param->reg.array_idx = ~0U;
 468     else dst_param->reg.array_idx = *(*ptr)++;
 469
 470     if (order > 2) FIXME("Unhandled order %u.\n", order);
 471
 472     dst_param->write_mask = (token & WINED3D_SM4_WRITEMASK_MASK) >> WINED3D_SM4_WRITEMASK_SHIFT;
 473     dst_param->modifiers = 0;
 474     dst_param->shift = 0;
 475     dst_param->reg.rel_addr = NULL;
 476
 477     map_register(priv, &dst_param->reg);
 478 }
 479
 480 static void shader_sm4_read_semantic(const DWORD **ptr, struct wined3d_shader_semantic *semantic)
 481 {
 482     FIXME("ptr %p, semantic %p stub!\n", ptr, semantic);
 483 }
 484
 485 static void shader_sm4_read_comment(const DWORD **ptr, const char **comment, UINT *comment_size)
 486 {
 487     FIXME("ptr %p, comment %p, comment_size %p stub!\n", ptr, comment, comment_size);
 488     *comment = NULL;
 489 }
 490
 491 static BOOL shader_sm4_is_end(void *data, const DWORD **ptr)
 492 {
 493     struct wined3d_sm4_data *priv = data;
 494     return *ptr == priv->end;
 495 }
 496
 497 const struct wined3d_shader_frontend sm4_shader_frontend =
 498 {
 499     shader_sm4_init,
 500     shader_sm4_free,
 501     shader_sm4_read_header,
 502     shader_sm4_read_opcode,
 503     shader_sm4_read_src_param,
 504     shader_sm4_read_dst_param,
 505     shader_sm4_read_semantic,
 506     shader_sm4_read_comment,
 507     shader_sm4_is_end,
 508 };