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