src/gallium/drivers/svga/svga_tgsi_emit.h

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #ifndef SVGA_TGSI_EMIT_H
  27 #define SVGA_TGSI_EMIT_H
  28
  29 #include "tgsi/tgsi_scan.h"
  30 #include "svga_hw_reg.h"
  31 #include "svga_tgsi.h"
  32 #include "svga3d_shaderdefs.h"
  33
  34 struct src_register
  35 {
  36    SVGA3dShaderSrcToken base;
  37    SVGA3dShaderSrcToken indirect;
  38 };
  39
  40
  41 struct svga_arl_consts {
  42    int number;
  43    int idx;
  44    int swizzle;
  45    int arl_num;
  46 };
  47
  48 /* Internal functions:
  49  */
  50
  51 struct svga_shader_emitter
  52 {
  53    boolean use_sm30;
  54
  55    unsigned size;
  56    char *buf;
  57    char *ptr;
  58
  59    union svga_compile_key key;
  60    struct tgsi_shader_info info;
  61    int unit;
  62
  63    int imm_start;
  64
  65    int nr_hw_const;
  66    int nr_hw_temp;
  67
  68    int insn_offset;
  69
  70    int internal_temp_count;
  71    int internal_imm_count;
  72
  73    int internal_color_idx[2]; /* diffuse, specular */
  74    int internal_color_count;
  75
  76    boolean emitted_vface;
  77    boolean emit_frontface;
  78    int internal_frontface_idx;
  79
  80    int ps30_input_count;
  81
  82    int dynamic_branching_level;
  83
  84    boolean in_main_func;
  85
  86    boolean created_zero_immediate;
  87    int zero_immediate_idx;
  88
  89    boolean created_loop_const;
  90    int loop_const_idx;
  91
  92    boolean created_sincos_consts;
  93    int sincos_consts_idx;
  94
  95    unsigned label[32];
  96    unsigned nr_labels;
  97
  98    struct src_register input_map[PIPE_MAX_ATTRIBS];
  99    SVGA3dShaderDestToken output_map[PIPE_MAX_ATTRIBS];
 100
 101    struct src_register imm_0055;
 102    SVGA3dShaderDestToken temp_pos;
 103    SVGA3dShaderDestToken true_pos;
 104
 105    SVGA3dShaderDestToken temp_col[PIPE_MAX_COLOR_BUFS];
 106    SVGA3dShaderDestToken true_col[PIPE_MAX_COLOR_BUFS];
 107
 108    SVGA3dShaderDestToken temp_psiz;
 109    SVGA3dShaderDestToken true_psiz;
 110
 111    struct svga_arl_consts arl_consts[12];
 112    int num_arl_consts;
 113    int current_arl;
 114 };
 115
 116
 117 boolean svga_shader_emit_dword( struct svga_shader_emitter *emit,
 118                                 unsigned dword );
 119
 120 boolean svga_shader_emit_dwords( struct svga_shader_emitter *emit,
 121                                  const unsigned *dwords,
 122                                  unsigned nr );
 123
 124 boolean svga_shader_emit_opcode( struct svga_shader_emitter *emit,
 125                                  unsigned opcode );
 126
 127 boolean svga_shader_emit_instructions( struct svga_shader_emitter *emit,
 128                                        const struct tgsi_token *tokens );
 129
 130 boolean svga_translate_decl_sm20( struct svga_shader_emitter *emit,
 131                                const struct tgsi_full_declaration *decl );
 132
 133 boolean svga_translate_decl_sm30( struct svga_shader_emitter *emit,
 134                                const struct tgsi_full_declaration *decl );
 135
 136
 137 static INLINE boolean emit_dst( struct svga_shader_emitter *emit,
 138                          SVGA3dShaderDestToken dest )
 139 {
 140    assert(dest.reserved0);
 141    assert(dest.mask);
 142    return svga_shader_emit_dword( emit, dest.value );
 143 }
 144
 145 static INLINE boolean emit_src( struct svga_shader_emitter *emit,
 146                          const struct src_register src )
 147 {
 148    if (src.base.relAddr) {
 149       assert(src.base.reserved0);
 150       assert(src.indirect.reserved0);
 151       return (svga_shader_emit_dword( emit, src.base.value ) &&
 152               svga_shader_emit_dword( emit, src.indirect.value ));
 153    }
 154    else {
 155       assert(src.base.reserved0);
 156       return svga_shader_emit_dword( emit, src.base.value );
 157    }
 158 }
 159
 160
 161 static INLINE boolean emit_instruction( struct svga_shader_emitter *emit,
 162                                  SVGA3dShaderInstToken opcode )
 163 {
 164    return svga_shader_emit_opcode( emit, opcode.value );
 165 }
 166
 167
 168 static INLINE boolean emit_op1( struct svga_shader_emitter *emit,
 169                          SVGA3dShaderInstToken inst,
 170                          SVGA3dShaderDestToken dest,
 171                          struct src_register src0 )
 172 {
 173    return (emit_instruction( emit, inst ) &&
 174            emit_dst( emit, dest ) &&
 175            emit_src( emit, src0 ));
 176 }
 177
 178 static INLINE boolean emit_op2( struct svga_shader_emitter *emit,
 179                      SVGA3dShaderInstToken inst,
 180                      SVGA3dShaderDestToken dest,
 181                      struct src_register src0,
 182                      struct src_register src1 )
 183 {
 184    return (emit_instruction( emit, inst ) &&
 185            emit_dst( emit, dest ) &&
 186            emit_src( emit, src0 ) &&
 187            emit_src( emit, src1 ));
 188 }
 189
 190 static INLINE boolean emit_op3( struct svga_shader_emitter *emit,
 191                          SVGA3dShaderInstToken inst,
 192                          SVGA3dShaderDestToken dest,
 193                          struct src_register src0,
 194                          struct src_register src1,
 195                          struct src_register src2 )
 196 {
 197    return (emit_instruction( emit, inst ) &&
 198            emit_dst( emit, dest ) &&
 199            emit_src( emit, src0 ) &&
 200            emit_src( emit, src1 ) &&
 201            emit_src( emit, src2 ));
 202 }
 203
 204
 205 static INLINE boolean emit_op4( struct svga_shader_emitter *emit,
 206                                 SVGA3dShaderInstToken inst,
 207                                 SVGA3dShaderDestToken dest,
 208                                 struct src_register src0,
 209                                 struct src_register src1,
 210                                 struct src_register src2,
 211                                 struct src_register src3)
 212 {
 213    return (emit_instruction( emit, inst ) &&
 214            emit_dst( emit, dest ) &&
 215            emit_src( emit, src0 ) &&
 216            emit_src( emit, src1 ) &&
 217            emit_src( emit, src2 ) &&
 218            emit_src( emit, src3 ));
 219 }
 220
 221
 222 #define TRANSLATE_SWIZZLE(x,y,z,w)  ((x) | ((y) << 2) | ((z) << 4) | ((w) << 6))
 223 #define SWIZZLE_XYZW  \
 224  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_X,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_W)
 225 #define SWIZZLE_XXXX  \
 226  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_X,TGSI_SWIZZLE_X,TGSI_SWIZZLE_X,TGSI_SWIZZLE_X)
 227 #define SWIZZLE_YYYY  \
 228  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y)
 229 #define SWIZZLE_ZZZZ  \
 230  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z)
 231 #define SWIZZLE_WWWW  \
 232  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_W,TGSI_SWIZZLE_W,TGSI_SWIZZLE_W,TGSI_SWIZZLE_W)
 233
 234
 235
 236 static INLINE SVGA3dShaderInstToken
 237 inst_token( unsigned opcode )
 238 {
 239    SVGA3dShaderInstToken inst;
 240
 241    inst.value = 0;
 242    inst.op = opcode;
 243
 244    return inst;
 245 }
 246
 247 static INLINE SVGA3dShaderDestToken
 248 dst_register( unsigned file,
 249               int number )
 250 {
 251    SVGA3dShaderDestToken dest;
 252
 253    dest.value = 0;
 254    dest.num = number;
 255    dest.type_upper = file >> 3;
 256    dest.relAddr = 0;
 257    dest.reserved1 = 0;
 258    dest.mask = 0xf;
 259    dest.dstMod = 0;
 260    dest.shfScale = 0;
 261    dest.type_lower = file & 0x7;
 262    dest.reserved0 = 1;          /* is_reg */
 263
 264    return dest;
 265 }
 266
 267 static INLINE SVGA3dShaderDestToken
 268 writemask( SVGA3dShaderDestToken dest,
 269            unsigned mask )
 270 {
 271    assert(dest.mask & mask);
 272    dest.mask &= mask;
 273    return dest;
 274 }
 275
 276
 277 static INLINE SVGA3dShaderSrcToken
 278 src_token( unsigned file, int number )
 279 {
 280    SVGA3dShaderSrcToken src;
 281
 282    src.value = 0;
 283    src.num = number;
 284    src.type_upper = file >> 3;
 285    src.relAddr = 0;
 286    src.reserved1 = 0;
 287    src.swizzle = SWIZZLE_XYZW;
 288    src.srcMod = 0;
 289    src.type_lower = file & 0x7;
 290    src.reserved0 = 1;           /* is_reg */
 291
 292    return src;
 293 }
 294
 295
 296 static INLINE struct src_register
 297 absolute( struct src_register src )
 298 {
 299    src.base.srcMod = SVGA3DSRCMOD_ABS;
 300
 301    return src;
 302 }
 303
 304
 305 static INLINE struct src_register
 306 negate( struct src_register src )
 307 {
 308    switch (src.base.srcMod) {
 309    case SVGA3DSRCMOD_ABS:
 310       src.base.srcMod = SVGA3DSRCMOD_ABSNEG;
 311       break;
 312    case SVGA3DSRCMOD_ABSNEG:
 313       src.base.srcMod = SVGA3DSRCMOD_ABS;
 314       break;
 315    case SVGA3DSRCMOD_NEG:
 316       src.base.srcMod = SVGA3DSRCMOD_NONE;
 317       break;
 318    case SVGA3DSRCMOD_NONE:
 319       src.base.srcMod = SVGA3DSRCMOD_NEG;
 320       break;
 321    }
 322    return src;
 323 }
 324
 325
 326 static INLINE struct src_register
 327 src_register( unsigned file, int number )
 328 {
 329    struct src_register src;
 330
 331    src.base = src_token( file, number );
 332    src.indirect.value = 0;
 333
 334    return src;
 335 }
 336
 337 static INLINE SVGA3dShaderDestToken dst( struct src_register src )
 338 {
 339    return dst_register( SVGA3dShaderGetRegType( src.base.value ),
 340                         src.base.num );
 341 }
 342
 343 static INLINE struct src_register src( SVGA3dShaderDestToken dst )
 344 {
 345    return src_register( SVGA3dShaderGetRegType( dst.value ),
 346                         dst.num );
 347 }
 348
 349 static INLINE ubyte svga_tgsi_sampler_type( struct svga_shader_emitter *emit,
 350                                             int idx )
 351 {
 352    switch (emit->key.fkey.tex[idx].texture_target) {
 353    case PIPE_TEXTURE_1D:
 354       return SVGA3DSAMP_2D;
 355    case PIPE_TEXTURE_2D:
 356    case PIPE_TEXTURE_RECT:
 357       return SVGA3DSAMP_2D;
 358    case PIPE_TEXTURE_3D:
 359       return SVGA3DSAMP_VOLUME;
 360    case PIPE_TEXTURE_CUBE:
 361       return SVGA3DSAMP_CUBE;
 362    }
 363
 364    return SVGA3DSAMP_UNKNOWN;
 365 }
 366
 367 #endif