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_instruction( struct svga_shader_emitter *emit,
 150                                  SVGA3dShaderInstToken opcode )
 151 {
 152    return svga_shader_emit_opcode( emit, opcode.value );
 153 }
 154
 155
 156 #define TRANSLATE_SWIZZLE(x,y,z,w)  ((x) | ((y) << 2) | ((z) << 4) | ((w) << 6))
 157 #define SWIZZLE_XYZW  \
 158  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_X,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_W)
 159 #define SWIZZLE_XXXX  \
 160  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_X,TGSI_SWIZZLE_X,TGSI_SWIZZLE_X,TGSI_SWIZZLE_X)
 161 #define SWIZZLE_YYYY  \
 162  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y,TGSI_SWIZZLE_Y)
 163 #define SWIZZLE_ZZZZ  \
 164  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z,TGSI_SWIZZLE_Z)
 165 #define SWIZZLE_WWWW  \
 166  TRANSLATE_SWIZZLE(TGSI_SWIZZLE_W,TGSI_SWIZZLE_W,TGSI_SWIZZLE_W,TGSI_SWIZZLE_W)
 167
 168
 169
 170 static INLINE SVGA3dShaderInstToken
 171 inst_token( unsigned opcode )
 172 {
 173    SVGA3dShaderInstToken inst;
 174
 175    inst.value = 0;
 176    inst.op = opcode;
 177
 178    return inst;
 179 }
 180
 181
 182 /**
 183  * Create an instance of a SVGA3dShaderDestToken.
 184  * Note that this function is used to create tokens for output registers,
 185  * temp registers AND constants (see emit_def_const()).
 186  */
 187 static INLINE SVGA3dShaderDestToken
 188 dst_register( unsigned file,
 189               int number )
 190 {
 191    SVGA3dShaderDestToken dest;
 192
 193    /* check values against bitfield sizes */
 194    assert(number < (1 << 11));
 195    assert(file <= SVGA3DREG_PREDICATE);
 196
 197    dest.value = 0;
 198    dest.num = number;
 199    dest.type_upper = file >> 3;
 200    dest.relAddr = 0;
 201    dest.reserved1 = 0;
 202    dest.mask = 0xf;
 203    dest.dstMod = 0;
 204    dest.shfScale = 0;
 205    dest.type_lower = file & 0x7;
 206    dest.reserved0 = 1;          /* is_reg */
 207
 208    return dest;
 209 }
 210
 211 static INLINE SVGA3dShaderDestToken
 212 writemask( SVGA3dShaderDestToken dest,
 213            unsigned mask )
 214 {
 215    assert(dest.mask & mask);
 216    dest.mask &= mask;
 217    return dest;
 218 }
 219
 220
 221 static INLINE SVGA3dShaderSrcToken
 222 src_token( unsigned file, int number )
 223 {
 224    SVGA3dShaderSrcToken src;
 225
 226    /* check values against bitfield sizes */
 227    assert(number < (1 << 11));
 228    assert(file <= SVGA3DREG_PREDICATE);
 229
 230    src.value = 0;
 231    src.num = number;
 232    src.type_upper = file >> 3;
 233    src.relAddr = 0;
 234    src.reserved1 = 0;
 235    src.swizzle = SWIZZLE_XYZW;
 236    src.srcMod = 0;
 237    src.type_lower = file & 0x7;
 238    src.reserved0 = 1;           /* is_reg */
 239
 240    return src;
 241 }
 242
 243
 244 static INLINE struct src_register
 245 src_register( unsigned file, int number )
 246 {
 247    struct src_register src;
 248
 249    src.base = src_token( file, number );
 250    src.indirect.value = 0;
 251
 252    return src;
 253 }
 254
 255 static INLINE SVGA3dShaderDestToken dst( struct src_register src )
 256 {
 257    return dst_register( SVGA3dShaderGetRegType( src.base.value ),
 258                         src.base.num );
 259 }
 260
 261 static INLINE struct src_register src( SVGA3dShaderDestToken dst )
 262 {
 263    return src_register( SVGA3dShaderGetRegType( dst.value ),
 264                         dst.num );
 265 }
 266
 267
 268 #endif