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    unsigned size;
  54    char *buf;
  55    char *ptr;
  56
  57    struct svga_compile_key key;
  58    struct tgsi_shader_info info;
  59    int unit;
  60
  61    int imm_start;
  62
  63    int nr_hw_float_const;
  64    int nr_hw_int_const;
  65    int nr_hw_temp;
  66
  67    int insn_offset;
  68
  69    int internal_temp_count;
  70    int internal_imm_count;
  71
  72    int internal_color_idx[2]; /* diffuse, specular */
  73    int internal_color_count;
  74
  75    boolean emitted_vface;
  76    boolean emit_frontface;
  77    int internal_frontface_idx;
  78
  79    int ps30_input_count;
  80    int vs30_output_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    unsigned inverted_texcoords;  /**< bitmask of which texcoords are flipped */
  93    struct src_register ps_true_texcoord[PIPE_MAX_ATTRIBS];
  94    struct src_register ps_inverted_texcoord[PIPE_MAX_ATTRIBS];
  95    unsigned ps_inverted_texcoord_input[PIPE_MAX_ATTRIBS];
  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    boolean emitted_depth_fog;
 105    struct src_register ps_true_pos;
 106    struct src_register ps_depth_pos;
 107    SVGA3dShaderDestToken ps_temp_pos;
 108
 109    /* shared input for depth and fog */
 110    struct src_register ps_depth_fog;
 111
 112    struct src_register imm_0055;
 113    SVGA3dShaderDestToken temp_pos;
 114    SVGA3dShaderDestToken true_pos;
 115    SVGA3dShaderDestToken depth_pos;
 116
 117    /* shared output for depth and fog */
 118    SVGA3dShaderDestToken vs_depth_fog;
 119
 120    SVGA3dShaderDestToken temp_col[PIPE_MAX_COLOR_BUFS];
 121    SVGA3dShaderDestToken true_col[PIPE_MAX_COLOR_BUFS];
 122
 123    SVGA3dShaderDestToken temp_psiz;
 124    SVGA3dShaderDestToken true_psiz;
 125
 126    struct svga_arl_consts arl_consts[12];
 127    int num_arl_consts;
 128    int current_arl;
 129 };
 130
 131
 132 boolean svga_shader_emit_dword( struct svga_shader_emitter *emit,
 133                                 unsigned dword );
 134
 135 boolean svga_shader_emit_dwords( struct svga_shader_emitter *emit,
 136                                  const unsigned *dwords,
 137                                  unsigned nr );
 138
 139 boolean svga_shader_emit_opcode( struct svga_shader_emitter *emit,
 140                                  unsigned opcode );
 141
 142 boolean svga_shader_emit_instructions( struct svga_shader_emitter *emit,
 143                                        const struct tgsi_token *tokens );
 144
 145 boolean svga_translate_decl_sm30( struct svga_shader_emitter *emit,
 146                                const struct tgsi_full_declaration *decl );
 147
 148
 149 static INLINE boolean emit_dst( struct svga_shader_emitter *emit,
 150                          SVGA3dShaderDestToken dest )
 151 {
 152    assert(dest.reserved0);
 153    assert(dest.mask);
 154    return svga_shader_emit_dword( emit, dest.value );
 155 }
 156
 157 static INLINE boolean emit_src( struct svga_shader_emitter *emit,
 158                          const struct src_register src )
 159 {
 160    if (src.base.relAddr) {
 161       assert(src.base.reserved0);
 162       assert(src.indirect.reserved0);
 163       return (svga_shader_emit_dword( emit, src.base.value ) &&
 164               svga_shader_emit_dword( emit, src.indirect.value ));
 165    }
 166    else {
 167       assert(src.base.reserved0);
 168       return svga_shader_emit_dword( emit, src.base.value );
 169    }
 170 }
 171
 172
 173 static INLINE boolean emit_instruction( struct svga_shader_emitter *emit,
 174                                  SVGA3dShaderInstToken opcode )
 175 {
 176    return svga_shader_emit_opcode( emit, opcode.value );
 177 }
 178
 179
 180 static INLINE boolean emit_op1( struct svga_shader_emitter *emit,
 181                          SVGA3dShaderInstToken inst,
 182                          SVGA3dShaderDestToken dest,
 183                          struct src_register src0 )
 184 {
 185    return (emit_instruction( emit, inst ) &&
 186            emit_dst( emit, dest ) &&
 187            emit_src( emit, src0 ));
 188 }
 189
 190 static INLINE boolean emit_op2( struct svga_shader_emitter *emit,
 191                      SVGA3dShaderInstToken inst,
 192                      SVGA3dShaderDestToken dest,
 193                      struct src_register src0,
 194                      struct src_register src1 )
 195 {
 196    return (emit_instruction( emit, inst ) &&
 197            emit_dst( emit, dest ) &&
 198            emit_src( emit, src0 ) &&
 199            emit_src( emit, src1 ));
 200 }
 201
 202 static INLINE boolean emit_op3( struct svga_shader_emitter *emit,
 203                          SVGA3dShaderInstToken inst,
 204                          SVGA3dShaderDestToken dest,
 205                          struct src_register src0,
 206                          struct src_register src1,
 207                          struct src_register src2 )
 208 {
 209    return (emit_instruction( emit, inst ) &&
 210            emit_dst( emit, dest ) &&
 211            emit_src( emit, src0 ) &&
 212            emit_src( emit, src1 ) &&
 213            emit_src( emit, src2 ));
 214 }
 215
 216
 217 static INLINE boolean emit_op4( struct svga_shader_emitter *emit,
 218                                 SVGA3dShaderInstToken inst,
 219                                 SVGA3dShaderDestToken dest,
 220                                 struct src_register src0,
 221                                 struct src_register src1,
 222                                 struct src_register src2,
 223                                 struct src_register src3)
 224 {
 225    return (emit_instruction( emit, inst ) &&
 226            emit_dst( emit, dest ) &&
 227            emit_src( emit, src0 ) &&
 228            emit_src( emit, src1 ) &&
 229            emit_src( emit, src2 ) &&
 230            emit_src( emit, src3 ));
 231 }
 232
 233
 234 #define TRANSLATE_SWIZZLE(x,y,z,w)  ((x) | ((y) << 2) | ((z) << 4) | ((w) << 6))
 235 #define SWIZZLE_XYZW  \
 236  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_X,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_W)
 237 #define SWIZZLE_XXXX  \
 238  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_X,TGSI_SWIZZLE_X,TGSI_SWIZZLE_X,TGSI_SWIZZLE_X)
 239 #define SWIZZLE_YYYY  \
 240  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y)
 241 #define SWIZZLE_ZZZZ  \
 242  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z)
 243 #define SWIZZLE_WWWW  \
 244  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_W,TGSI_SWIZZLE_W,TGSI_SWIZZLE_W,TGSI_SWIZZLE_W)
 245
 246
 247
 248 static INLINE SVGA3dShaderInstToken
 249 inst_token( unsigned opcode )
 250 {
 251    SVGA3dShaderInstToken inst;
 252
 253    inst.value = 0;
 254    inst.op = opcode;
 255
 256    return inst;
 257 }
 258
 259 static INLINE SVGA3dShaderDestToken
 260 dst_register( unsigned file,
 261               int number )
 262 {
 263    SVGA3dShaderDestToken dest;
 264
 265    /* check values against bitfield sizes */
 266    assert(number < (1 << 11));
 267    assert(file <= SVGA3DREG_PREDICATE);
 268
 269    assert(number < SVGA3D_TEMPREG_MAX);
 270
 271    dest.value = 0;
 272    dest.num = number;
 273    dest.type_upper = file >> 3;
 274    dest.relAddr = 0;
 275    dest.reserved1 = 0;
 276    dest.mask = 0xf;
 277    dest.dstMod = 0;
 278    dest.shfScale = 0;
 279    dest.type_lower = file & 0x7;
 280    dest.reserved0 = 1;          /* is_reg */
 281
 282    return dest;
 283 }
 284
 285 static INLINE SVGA3dShaderDestToken
 286 writemask( SVGA3dShaderDestToken dest,
 287            unsigned mask )
 288 {
 289    assert(dest.mask & mask);
 290    dest.mask &= mask;
 291    return dest;
 292 }
 293
 294
 295 static INLINE SVGA3dShaderSrcToken
 296 src_token( unsigned file, int number )
 297 {
 298    SVGA3dShaderSrcToken src;
 299
 300    /* check values against bitfield sizes */
 301    assert(number < (1 << 11));
 302    assert(file <= SVGA3DREG_PREDICATE);
 303
 304    src.value = 0;
 305    src.num = number;
 306    src.type_upper = file >> 3;
 307    src.relAddr = 0;
 308    src.reserved1 = 0;
 309    src.swizzle = SWIZZLE_XYZW;
 310    src.srcMod = 0;
 311    src.type_lower = file & 0x7;
 312    src.reserved0 = 1;           /* is_reg */
 313
 314    return src;
 315 }
 316
 317
 318 static INLINE struct src_register
 319 absolute( struct src_register src )
 320 {
 321    src.base.srcMod = SVGA3DSRCMOD_ABS;
 322
 323    return src;
 324 }
 325
 326
 327 static INLINE struct src_register
 328 negate( struct src_register src )
 329 {
 330    switch (src.base.srcMod) {
 331    case SVGA3DSRCMOD_ABS:
 332       src.base.srcMod = SVGA3DSRCMOD_ABSNEG;
 333       break;
 334    case SVGA3DSRCMOD_ABSNEG:
 335       src.base.srcMod = SVGA3DSRCMOD_ABS;
 336       break;
 337    case SVGA3DSRCMOD_NEG:
 338       src.base.srcMod = SVGA3DSRCMOD_NONE;
 339       break;
 340    case SVGA3DSRCMOD_NONE:
 341       src.base.srcMod = SVGA3DSRCMOD_NEG;
 342       break;
 343    }
 344    return src;
 345 }
 346
 347
 348 static INLINE struct src_register
 349 src_register( unsigned file, int number )
 350 {
 351    struct src_register src;
 352
 353    src.base = src_token( file, number );
 354    src.indirect.value = 0;
 355
 356    return src;
 357 }
 358
 359 static INLINE SVGA3dShaderDestToken dst( struct src_register src )
 360 {
 361    return dst_register( SVGA3dShaderGetRegType( src.base.value ),
 362                         src.base.num );
 363 }
 364
 365 static INLINE struct src_register src( SVGA3dShaderDestToken dst )
 366 {
 367    return src_register( SVGA3dShaderGetRegType( dst.value ),
 368                         dst.num );
 369 }
 370
 371 static INLINE ubyte svga_tgsi_sampler_type( struct svga_shader_emitter *emit,
 372                                             int idx )
 373 {
 374    switch (emit->key.fkey.tex[idx].texture_target) {
 375    case PIPE_TEXTURE_1D:
 376       return SVGA3DSAMP_2D;
 377    case PIPE_TEXTURE_2D:
 378    case PIPE_TEXTURE_RECT:
 379       return SVGA3DSAMP_2D;
 380    case PIPE_TEXTURE_3D:
 381       return SVGA3DSAMP_VOLUME;
 382    case PIPE_TEXTURE_CUBE:
 383       return SVGA3DSAMP_CUBE;
 384    }
 385
 386    return SVGA3DSAMP_UNKNOWN;
 387 }
 388
 389 #endif