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
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  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    int vs30_output_count;
  83
  84    int dynamic_branching_level;
  85
  86    boolean in_main_func;
  87
  88    boolean created_zero_immediate;
  89    int zero_immediate_idx;
  90
  91    boolean created_loop_const;
  92    int loop_const_idx;
  93
  94    boolean created_sincos_consts;
  95    int sincos_consts_idx;
  96
  97    unsigned label[32];
  98    unsigned nr_labels;
  99
 100    struct src_register input_map[PIPE_MAX_ATTRIBS];
 101    SVGA3dShaderDestToken output_map[PIPE_MAX_ATTRIBS];
 102
 103    boolean ps_reads_pos;
 104    struct src_register ps_true_pos;
 105    struct src_register ps_depth_pos;
 106    SVGA3dShaderDestToken ps_temp_pos;
 107
 108    struct src_register imm_0055;
 109    SVGA3dShaderDestToken temp_pos;
 110    SVGA3dShaderDestToken true_pos;
 111    SVGA3dShaderDestToken depth_pos;
 112
 113    SVGA3dShaderDestToken temp_col[PIPE_MAX_COLOR_BUFS];
 114    SVGA3dShaderDestToken true_col[PIPE_MAX_COLOR_BUFS];
 115
 116    SVGA3dShaderDestToken temp_psiz;
 117    SVGA3dShaderDestToken true_psiz;
 118
 119    struct svga_arl_consts arl_consts[12];
 120    int num_arl_consts;
 121    int current_arl;
 122 };
 123
 124
 125 boolean svga_shader_emit_dword( struct svga_shader_emitter *emit,
 126                                 unsigned dword );
 127
 128 boolean svga_shader_emit_dwords( struct svga_shader_emitter *emit,
 129                                  const unsigned *dwords,
 130                                  unsigned nr );
 131
 132 boolean svga_shader_emit_opcode( struct svga_shader_emitter *emit,
 133                                  unsigned opcode );
 134
 135 boolean svga_shader_emit_instructions( struct svga_shader_emitter *emit,
 136                                        const struct tgsi_token *tokens );
 137
 138 boolean svga_translate_decl_sm20( struct svga_shader_emitter *emit,
 139                                const struct tgsi_full_declaration *decl );
 140
 141 boolean svga_translate_decl_sm30( struct svga_shader_emitter *emit,
 142                                const struct tgsi_full_declaration *decl );
 143
 144
 145 static INLINE boolean emit_dst( struct svga_shader_emitter *emit,
 146                          SVGA3dShaderDestToken dest )
 147 {
 148    assert(dest.reserved0);
 149    assert(dest.mask);
 150    return svga_shader_emit_dword( emit, dest.value );
 151 }
 152
 153 static INLINE boolean emit_src( struct svga_shader_emitter *emit,
 154                          const struct src_register src )
 155 {
 156    if (src.base.relAddr) {
 157       assert(src.base.reserved0);
 158       assert(src.indirect.reserved0);
 159       return (svga_shader_emit_dword( emit, src.base.value ) &&
 160               svga_shader_emit_dword( emit, src.indirect.value ));
 161    }
 162    else {
 163       assert(src.base.reserved0);
 164       return svga_shader_emit_dword( emit, src.base.value );
 165    }
 166 }
 167
 168
 169 static INLINE boolean emit_instruction( struct svga_shader_emitter *emit,
 170                                  SVGA3dShaderInstToken opcode )
 171 {
 172    return svga_shader_emit_opcode( emit, opcode.value );
 173 }
 174
 175
 176 static INLINE boolean emit_op1( struct svga_shader_emitter *emit,
 177                          SVGA3dShaderInstToken inst,
 178                          SVGA3dShaderDestToken dest,
 179                          struct src_register src0 )
 180 {
 181    return (emit_instruction( emit, inst ) &&
 182            emit_dst( emit, dest ) &&
 183            emit_src( emit, src0 ));
 184 }
 185
 186 static INLINE boolean emit_op2( struct svga_shader_emitter *emit,
 187                      SVGA3dShaderInstToken inst,
 188                      SVGA3dShaderDestToken dest,
 189                      struct src_register src0,
 190                      struct src_register src1 )
 191 {
 192    return (emit_instruction( emit, inst ) &&
 193            emit_dst( emit, dest ) &&
 194            emit_src( emit, src0 ) &&
 195            emit_src( emit, src1 ));
 196 }
 197
 198 static INLINE boolean emit_op3( struct svga_shader_emitter *emit,
 199                          SVGA3dShaderInstToken inst,
 200                          SVGA3dShaderDestToken dest,
 201                          struct src_register src0,
 202                          struct src_register src1,
 203                          struct src_register src2 )
 204 {
 205    return (emit_instruction( emit, inst ) &&
 206            emit_dst( emit, dest ) &&
 207            emit_src( emit, src0 ) &&
 208            emit_src( emit, src1 ) &&
 209            emit_src( emit, src2 ));
 210 }
 211
 212
 213 static INLINE boolean emit_op4( struct svga_shader_emitter *emit,
 214                                 SVGA3dShaderInstToken inst,
 215                                 SVGA3dShaderDestToken dest,
 216                                 struct src_register src0,
 217                                 struct src_register src1,
 218                                 struct src_register src2,
 219                                 struct src_register src3)
 220 {
 221    return (emit_instruction( emit, inst ) &&
 222            emit_dst( emit, dest ) &&
 223            emit_src( emit, src0 ) &&
 224            emit_src( emit, src1 ) &&
 225            emit_src( emit, src2 ) &&
 226            emit_src( emit, src3 ));
 227 }
 228
 229
 230 #define TRANSLATE_SWIZZLE(x,y,z,w)  ((x) | ((y) << 2) | ((z) << 4) | ((w) << 6))
 231 #define SWIZZLE_XYZW  \
 232  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_X,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_W)
 233 #define SWIZZLE_XXXX  \
 234  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_X,TGSI_SWIZZLE_X,TGSI_SWIZZLE_X,TGSI_SWIZZLE_X)
 235 #define SWIZZLE_YYYY  \
 236  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y)
 237 #define SWIZZLE_ZZZZ  \
 238  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z)
 239 #define SWIZZLE_WWWW  \
 240  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_W,TGSI_SWIZZLE_W,TGSI_SWIZZLE_W,TGSI_SWIZZLE_W)
 241
 242
 243
 244 static INLINE SVGA3dShaderInstToken
 245 inst_token( unsigned opcode )
 246 {
 247    SVGA3dShaderInstToken inst;
 248
 249    inst.value = 0;
 250    inst.op = opcode;
 251
 252    return inst;
 253 }
 254
 255 static INLINE SVGA3dShaderDestToken
 256 dst_register( unsigned file,
 257               int number )
 258 {
 259    SVGA3dShaderDestToken dest;
 260
 261    dest.value = 0;
 262    dest.num = number;
 263    dest.type_upper = file >> 3;
 264    dest.relAddr = 0;
 265    dest.reserved1 = 0;
 266    dest.mask = 0xf;
 267    dest.dstMod = 0;
 268    dest.shfScale = 0;
 269    dest.type_lower = file & 0x7;
 270    dest.reserved0 = 1;          /* is_reg */
 271
 272    return dest;
 273 }
 274
 275 static INLINE SVGA3dShaderDestToken
 276 writemask( SVGA3dShaderDestToken dest,
 277            unsigned mask )
 278 {
 279    assert(dest.mask & mask);
 280    dest.mask &= mask;
 281    return dest;
 282 }
 283
 284
 285 static INLINE SVGA3dShaderSrcToken
 286 src_token( unsigned file, int number )
 287 {
 288    SVGA3dShaderSrcToken src;
 289
 290    src.value = 0;
 291    src.num = number;
 292    src.type_upper = file >> 3;
 293    src.relAddr = 0;
 294    src.reserved1 = 0;
 295    src.swizzle = SWIZZLE_XYZW;
 296    src.srcMod = 0;
 297    src.type_lower = file & 0x7;
 298    src.reserved0 = 1;           /* is_reg */
 299
 300    return src;
 301 }
 302
 303
 304 static INLINE struct src_register
 305 absolute( struct src_register src )
 306 {
 307    src.base.srcMod = SVGA3DSRCMOD_ABS;
 308
 309    return src;
 310 }
 311
 312
 313 static INLINE struct src_register
 314 negate( struct src_register src )
 315 {
 316    switch (src.base.srcMod) {
 317    case SVGA3DSRCMOD_ABS:
 318       src.base.srcMod = SVGA3DSRCMOD_ABSNEG;
 319       break;
 320    case SVGA3DSRCMOD_ABSNEG:
 321       src.base.srcMod = SVGA3DSRCMOD_ABS;
 322       break;
 323    case SVGA3DSRCMOD_NEG:
 324       src.base.srcMod = SVGA3DSRCMOD_NONE;
 325       break;
 326    case SVGA3DSRCMOD_NONE:
 327       src.base.srcMod = SVGA3DSRCMOD_NEG;
 328       break;
 329    }
 330    return src;
 331 }
 332
 333
 334 static INLINE struct src_register
 335 src_register( unsigned file, int number )
 336 {
 337    struct src_register src;
 338
 339    src.base = src_token( file, number );
 340    src.indirect.value = 0;
 341
 342    return src;
 343 }
 344
 345 static INLINE SVGA3dShaderDestToken dst( struct src_register src )
 346 {
 347    return dst_register( SVGA3dShaderGetRegType( src.base.value ),
 348                         src.base.num );
 349 }
 350
 351 static INLINE struct src_register src( SVGA3dShaderDestToken dst )
 352 {
 353    return src_register( SVGA3dShaderGetRegType( dst.value ),
 354                         dst.num );
 355 }
 356
 357 static INLINE ubyte svga_tgsi_sampler_type( struct svga_shader_emitter *emit,
 358                                             int idx )
 359 {
 360    switch (emit->key.fkey.tex[idx].texture_target) {
 361    case PIPE_TEXTURE_1D:
 362       return SVGA3DSAMP_2D;
 363    case PIPE_TEXTURE_2D:
 364    case PIPE_TEXTURE_RECT:
 365       return SVGA3DSAMP_2D;
 366    case PIPE_TEXTURE_3D:
 367       return SVGA3DSAMP_VOLUME;
 368    case PIPE_TEXTURE_CUBE:
 369       return SVGA3DSAMP_CUBE;
 370    }
 371
 372    return SVGA3DSAMP_UNKNOWN;
 373 }
 374
 375 #endif