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_float_const;
  66    int nr_hw_int_const;
  67    int nr_hw_temp;
  68
  69    int insn_offset;
  70
  71    int internal_temp_count;
  72    int internal_imm_count;
  73
  74    int internal_color_idx[2]; /* diffuse, specular */
  75    int internal_color_count;
  76
  77    boolean emitted_vface;
  78    boolean emit_frontface;
  79    int internal_frontface_idx;
  80
  81    int ps30_input_count;
  82
  83    int dynamic_branching_level;
  84
  85    boolean in_main_func;
  86
  87    boolean created_zero_immediate;
  88    int zero_immediate_idx;
  89
  90    boolean created_loop_const;
  91    int loop_const_idx;
  92
  93    boolean created_sincos_consts;
  94    int sincos_consts_idx;
  95
  96    unsigned label[32];
  97    unsigned nr_labels;
  98
  99    struct src_register input_map[PIPE_MAX_ATTRIBS];
 100    SVGA3dShaderDestToken output_map[PIPE_MAX_ATTRIBS];
 101
 102    struct src_register imm_0055;
 103    SVGA3dShaderDestToken temp_pos;
 104    SVGA3dShaderDestToken true_pos;
 105
 106    SVGA3dShaderDestToken temp_col[PIPE_MAX_COLOR_BUFS];
 107    SVGA3dShaderDestToken true_col[PIPE_MAX_COLOR_BUFS];
 108
 109    SVGA3dShaderDestToken temp_psiz;
 110    SVGA3dShaderDestToken true_psiz;
 111
 112    struct svga_arl_consts arl_consts[12];
 113    int num_arl_consts;
 114    int current_arl;
 115 };
 116
 117
 118 boolean svga_shader_emit_dword( struct svga_shader_emitter *emit,
 119                                 unsigned dword );
 120
 121 boolean svga_shader_emit_dwords( struct svga_shader_emitter *emit,
 122                                  const unsigned *dwords,
 123                                  unsigned nr );
 124
 125 boolean svga_shader_emit_opcode( struct svga_shader_emitter *emit,
 126                                  unsigned opcode );
 127
 128 boolean svga_shader_emit_instructions( struct svga_shader_emitter *emit,
 129                                        const struct tgsi_token *tokens );
 130
 131 boolean svga_translate_decl_sm20( struct svga_shader_emitter *emit,
 132                                const struct tgsi_full_declaration *decl );
 133
 134 boolean svga_translate_decl_sm30( struct svga_shader_emitter *emit,
 135                                const struct tgsi_full_declaration *decl );
 136
 137
 138 static INLINE boolean emit_dst( struct svga_shader_emitter *emit,
 139                          SVGA3dShaderDestToken dest )
 140 {
 141    assert(dest.reserved0);
 142    assert(dest.mask);
 143    return svga_shader_emit_dword( emit, dest.value );
 144 }
 145
 146 static INLINE boolean emit_src( struct svga_shader_emitter *emit,
 147                          const struct src_register src )
 148 {
 149    if (src.base.relAddr) {
 150       assert(src.base.reserved0);
 151       assert(src.indirect.reserved0);
 152       return (svga_shader_emit_dword( emit, src.base.value ) &&
 153               svga_shader_emit_dword( emit, src.indirect.value ));
 154    }
 155    else {
 156       assert(src.base.reserved0);
 157       return svga_shader_emit_dword( emit, src.base.value );
 158    }
 159 }
 160
 161
 162 static INLINE boolean emit_instruction( struct svga_shader_emitter *emit,
 163                                  SVGA3dShaderInstToken opcode )
 164 {
 165    return svga_shader_emit_opcode( emit, opcode.value );
 166 }
 167
 168
 169 static INLINE boolean emit_op1( struct svga_shader_emitter *emit,
 170                          SVGA3dShaderInstToken inst,
 171                          SVGA3dShaderDestToken dest,
 172                          struct src_register src0 )
 173 {
 174    return (emit_instruction( emit, inst ) &&
 175            emit_dst( emit, dest ) &&
 176            emit_src( emit, src0 ));
 177 }
 178
 179 static INLINE boolean emit_op2( struct svga_shader_emitter *emit,
 180                      SVGA3dShaderInstToken inst,
 181                      SVGA3dShaderDestToken dest,
 182                      struct src_register src0,
 183                      struct src_register src1 )
 184 {
 185    return (emit_instruction( emit, inst ) &&
 186            emit_dst( emit, dest ) &&
 187            emit_src( emit, src0 ) &&
 188            emit_src( emit, src1 ));
 189 }
 190
 191 static INLINE boolean emit_op3( struct svga_shader_emitter *emit,
 192                          SVGA3dShaderInstToken inst,
 193                          SVGA3dShaderDestToken dest,
 194                          struct src_register src0,
 195                          struct src_register src1,
 196                          struct src_register src2 )
 197 {
 198    return (emit_instruction( emit, inst ) &&
 199            emit_dst( emit, dest ) &&
 200            emit_src( emit, src0 ) &&
 201            emit_src( emit, src1 ) &&
 202            emit_src( emit, src2 ));
 203 }
 204
 205
 206 static INLINE boolean emit_op4( struct svga_shader_emitter *emit,
 207                                 SVGA3dShaderInstToken inst,
 208                                 SVGA3dShaderDestToken dest,
 209                                 struct src_register src0,
 210                                 struct src_register src1,
 211                                 struct src_register src2,
 212                                 struct src_register src3)
 213 {
 214    return (emit_instruction( emit, inst ) &&
 215            emit_dst( emit, dest ) &&
 216            emit_src( emit, src0 ) &&
 217            emit_src( emit, src1 ) &&
 218            emit_src( emit, src2 ) &&
 219            emit_src( emit, src3 ));
 220 }
 221
 222
 223 #define TRANSLATE_SWIZZLE(x,y,z,w)  ((x) | ((y) << 2) | ((z) << 4) | ((w) << 6))
 224 #define SWIZZLE_XYZW  \
 225  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_X,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_W)
 226 #define SWIZZLE_XXXX  \
 227  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_X,TGSI_SWIZZLE_X,TGSI_SWIZZLE_X,TGSI_SWIZZLE_X)
 228 #define SWIZZLE_YYYY  \
 229  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y)
 230 #define SWIZZLE_ZZZZ  \
 231  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z)
 232 #define SWIZZLE_WWWW  \
 233  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_W,TGSI_SWIZZLE_W,TGSI_SWIZZLE_W,TGSI_SWIZZLE_W)
 234
 235
 236
 237 static INLINE SVGA3dShaderInstToken
 238 inst_token( unsigned opcode )
 239 {
 240    SVGA3dShaderInstToken inst;
 241
 242    inst.value = 0;
 243    inst.op = opcode;
 244
 245    return inst;
 246 }
 247
 248 static INLINE SVGA3dShaderDestToken
 249 dst_register( unsigned file,
 250               int number )
 251 {
 252    SVGA3dShaderDestToken dest;
 253
 254    dest.value = 0;
 255    dest.num = number;
 256    dest.type_upper = file >> 3;
 257    dest.relAddr = 0;
 258    dest.reserved1 = 0;
 259    dest.mask = 0xf;
 260    dest.dstMod = 0;
 261    dest.shfScale = 0;
 262    dest.type_lower = file & 0x7;
 263    dest.reserved0 = 1;          /* is_reg */
 264
 265    return dest;
 266 }
 267
 268 static INLINE SVGA3dShaderDestToken
 269 writemask( SVGA3dShaderDestToken dest,
 270            unsigned mask )
 271 {
 272    assert(dest.mask & mask);
 273    dest.mask &= mask;
 274    return dest;
 275 }
 276
 277
 278 static INLINE SVGA3dShaderSrcToken
 279 src_token( unsigned file, int number )
 280 {
 281    SVGA3dShaderSrcToken src;
 282
 283    src.value = 0;
 284    src.num = number;
 285    src.type_upper = file >> 3;
 286    src.relAddr = 0;
 287    src.reserved1 = 0;
 288    src.swizzle = SWIZZLE_XYZW;
 289    src.srcMod = 0;
 290    src.type_lower = file & 0x7;
 291    src.reserved0 = 1;           /* is_reg */
 292
 293    return src;
 294 }
 295
 296
 297 static INLINE struct src_register
 298 absolute( struct src_register src )
 299 {
 300    src.base.srcMod = SVGA3DSRCMOD_ABS;
 301
 302    return src;
 303 }
 304
 305
 306 static INLINE struct src_register
 307 negate( struct src_register src )
 308 {
 309    switch (src.base.srcMod) {
 310    case SVGA3DSRCMOD_ABS:
 311       src.base.srcMod = SVGA3DSRCMOD_ABSNEG;
 312       break;
 313    case SVGA3DSRCMOD_ABSNEG:
 314       src.base.srcMod = SVGA3DSRCMOD_ABS;
 315       break;
 316    case SVGA3DSRCMOD_NEG:
 317       src.base.srcMod = SVGA3DSRCMOD_NONE;
 318       break;
 319    case SVGA3DSRCMOD_NONE:
 320       src.base.srcMod = SVGA3DSRCMOD_NEG;
 321       break;
 322    }
 323    return src;
 324 }
 325
 326
 327 static INLINE struct src_register
 328 src_register( unsigned file, int number )
 329 {
 330    struct src_register src;
 331
 332    src.base = src_token( file, number );
 333    src.indirect.value = 0;
 334
 335    return src;
 336 }
 337
 338 static INLINE SVGA3dShaderDestToken dst( struct src_register src )
 339 {
 340    return dst_register( SVGA3dShaderGetRegType( src.base.value ),
 341                         src.base.num );
 342 }
 343
 344 static INLINE struct src_register src( SVGA3dShaderDestToken dst )
 345 {
 346    return src_register( SVGA3dShaderGetRegType( dst.value ),
 347                         dst.num );
 348 }
 349
 350 static INLINE ubyte svga_tgsi_sampler_type( struct svga_shader_emitter *emit,
 351                                             int idx )
 352 {
 353    switch (emit->key.fkey.tex[idx].texture_target) {
 354    case PIPE_TEXTURE_1D:
 355       return SVGA3DSAMP_2D;
 356    case PIPE_TEXTURE_2D:
 357    case PIPE_TEXTURE_RECT:
 358       return SVGA3DSAMP_2D;
 359    case PIPE_TEXTURE_3D:
 360       return SVGA3DSAMP_VOLUME;
 361    case PIPE_TEXTURE_CUBE:
 362       return SVGA3DSAMP_CUBE;
 363    }
 364
 365    return SVGA3DSAMP_UNKNOWN;
 366 }
 367
 368 #endif