src/mesa/pipe/i915simple/i915_fpc.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #ifndef I915_FPC_H
  30 #define I915_FPC_H
  31
  32 #include "pipe/p_util.h"
  33
  34 #include "i915_context.h"
  35 #include "i915_reg.h"
  36
  37
  38
  39 #define I915_PROGRAM_SIZE 192
  40
  41 #define MAX_VARYING 8
  42
  43 enum
  44 {
  45    FRAG_ATTRIB_WPOS = 0,
  46    FRAG_ATTRIB_COL0 = 1,
  47    FRAG_ATTRIB_COL1 = 2,
  48    FRAG_ATTRIB_FOGC = 3,
  49    FRAG_ATTRIB_TEX0 = 4,
  50    FRAG_ATTRIB_TEX1 = 5,
  51    FRAG_ATTRIB_TEX2 = 6,
  52    FRAG_ATTRIB_TEX3 = 7,
  53    FRAG_ATTRIB_TEX4 = 8,
  54    FRAG_ATTRIB_TEX5 = 9,
  55    FRAG_ATTRIB_TEX6 = 10,
  56    FRAG_ATTRIB_TEX7 = 11,
  57    FRAG_ATTRIB_VAR0 = 12,  /**< shader varying */
  58    FRAG_ATTRIB_MAX = (FRAG_ATTRIB_VAR0 + MAX_VARYING)
  59 };
  60
  61 /**
  62  * Bitflags for fragment program input attributes.
  63  */
  64 /*@{*/
  65 #define FRAG_BIT_WPOS  (1 << FRAG_ATTRIB_WPOS)
  66 #define FRAG_BIT_COL0  (1 << FRAG_ATTRIB_COL0)
  67 #define FRAG_BIT_COL1  (1 << FRAG_ATTRIB_COL1)
  68 #define FRAG_BIT_FOGC  (1 << FRAG_ATTRIB_FOGC)
  69 #define FRAG_BIT_TEX0  (1 << FRAG_ATTRIB_TEX0)
  70 #define FRAG_BIT_TEX1  (1 << FRAG_ATTRIB_TEX1)
  71 #define FRAG_BIT_TEX2  (1 << FRAG_ATTRIB_TEX2)
  72 #define FRAG_BIT_TEX3  (1 << FRAG_ATTRIB_TEX3)
  73 #define FRAG_BIT_TEX4  (1 << FRAG_ATTRIB_TEX4)
  74 #define FRAG_BIT_TEX5  (1 << FRAG_ATTRIB_TEX5)
  75 #define FRAG_BIT_TEX6  (1 << FRAG_ATTRIB_TEX6)
  76 #define FRAG_BIT_TEX7  (1 << FRAG_ATTRIB_TEX7)
  77 #define FRAG_BIT_VAR0  (1 << FRAG_ATTRIB_VAR0)
  78
  79 #define MAX_DRAW_BUFFERS 4
  80
  81 enum
  82 {
  83    FRAG_RESULT_COLR = 0,
  84    FRAG_RESULT_COLH = 1,
  85    FRAG_RESULT_DEPR = 2,
  86    FRAG_RESULT_DATA0 = 3,
  87    FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS)
  88 };
  89
  90
  91
  92 /**
  93  * Program translation state
  94  */
  95 struct i915_fp_compile {
  96    struct pipe_shader_state *shader;
  97
  98    uint declarations[I915_PROGRAM_SIZE];
  99    uint program[I915_PROGRAM_SIZE];
 100
 101    /** points into the i915->current.constants array: */
 102    float (*constants)[4];
 103    uint num_constants;
 104    uint constant_flags[I915_MAX_CONSTANT]; /**< status of each constant */
 105
 106    uint *csr;                 /* Cursor, points into program.
 107                                  */
 108
 109    uint *decl;                /* Cursor, points into declarations.
 110                                  */
 111
 112    uint decl_s;               /* flags for which s regs need to be decl'd */
 113    uint decl_t;               /* flags for which t regs need to be decl'd */
 114
 115    uint temp_flag;            /* Tracks temporary regs which are in
 116                                  * use.
 117                                  */
 118
 119    uint utemp_flag;           /* Tracks TYPE_U temporary regs which are in
 120                                  * use.
 121                                  */
 122
 123    uint nr_tex_indirect;
 124    uint nr_tex_insn;
 125    uint nr_alu_insn;
 126    uint nr_decl_insn;
 127
 128    boolean error;      /**< Set if i915_program_error() is called */
 129    uint wpos_tex;
 130    uint NumNativeInstructions;
 131    uint NumNativeAluInstructions;
 132    uint NumNativeTexInstructions;
 133    uint NumNativeTexIndirections;
 134 };
 135
 136
 137 /* Having zero and one in here makes the definition of swizzle a lot
 138  * easier.
 139  */
 140 #define UREG_TYPE_SHIFT               29
 141 #define UREG_NR_SHIFT                 24
 142 #define UREG_CHANNEL_X_NEGATE_SHIFT   23
 143 #define UREG_CHANNEL_X_SHIFT          20
 144 #define UREG_CHANNEL_Y_NEGATE_SHIFT   19
 145 #define UREG_CHANNEL_Y_SHIFT          16
 146 #define UREG_CHANNEL_Z_NEGATE_SHIFT   15
 147 #define UREG_CHANNEL_Z_SHIFT          12
 148 #define UREG_CHANNEL_W_NEGATE_SHIFT   11
 149 #define UREG_CHANNEL_W_SHIFT          8
 150 #define UREG_CHANNEL_ZERO_NEGATE_MBZ  5
 151 #define UREG_CHANNEL_ZERO_SHIFT       4
 152 #define UREG_CHANNEL_ONE_NEGATE_MBZ   1
 153 #define UREG_CHANNEL_ONE_SHIFT        0
 154
 155 #define UREG_BAD          0xffffffff    /* not a valid ureg */
 156
 157 #define X    SRC_X
 158 #define Y    SRC_Y
 159 #define Z    SRC_Z
 160 #define W    SRC_W
 161 #define ZERO SRC_ZERO
 162 #define ONE  SRC_ONE
 163
 164 /* Construct a ureg:
 165  */
 166 #define UREG( type, nr ) (((type)<< UREG_TYPE_SHIFT) |          \
 167                           ((nr)  << UREG_NR_SHIFT) |            \
 168                           (X     << UREG_CHANNEL_X_SHIFT) |     \
 169                           (Y     << UREG_CHANNEL_Y_SHIFT) |     \
 170                           (Z     << UREG_CHANNEL_Z_SHIFT) |     \
 171                           (W     << UREG_CHANNEL_W_SHIFT) |     \
 172                           (ZERO  << UREG_CHANNEL_ZERO_SHIFT) |  \
 173                           (ONE   << UREG_CHANNEL_ONE_SHIFT))
 174
 175 #define GET_CHANNEL_SRC( reg, channel ) ((reg<<(channel*4)) & (0xf<<20))
 176 #define CHANNEL_SRC( src, channel ) (src>>(channel*4))
 177
 178 #define GET_UREG_TYPE(reg) (((reg)>>UREG_TYPE_SHIFT)&REG_TYPE_MASK)
 179 #define GET_UREG_NR(reg)   (((reg)>>UREG_NR_SHIFT)&REG_NR_MASK)
 180
 181
 182
 183 #define UREG_XYZW_CHANNEL_MASK 0x00ffff00
 184
 185 /* One neat thing about the UREG representation:
 186  */
 187 static INLINE int
 188 swizzle(int reg, uint x, uint y, uint z, uint w)
 189 {
 190    assert(x <= SRC_ONE);
 191    assert(y <= SRC_ONE);
 192    assert(z <= SRC_ONE);
 193    assert(w <= SRC_ONE);
 194    return ((reg & ~UREG_XYZW_CHANNEL_MASK) |
 195            CHANNEL_SRC(GET_CHANNEL_SRC(reg, x), 0) |
 196            CHANNEL_SRC(GET_CHANNEL_SRC(reg, y), 1) |
 197            CHANNEL_SRC(GET_CHANNEL_SRC(reg, z), 2) |
 198            CHANNEL_SRC(GET_CHANNEL_SRC(reg, w), 3));
 199 }
 200
 201
 202
 203 /***********************************************************************
 204  * Public interface for the compiler
 205  */
 206 extern void i915_translate_fragment_program( struct i915_context *i915 );
 207
 208
 209
 210 extern uint i915_get_temp(struct i915_fp_compile *p);
 211 extern uint i915_get_utemp(struct i915_fp_compile *p);
 212 extern void i915_release_utemps(struct i915_fp_compile *p);
 213
 214
 215 extern uint i915_emit_texld(struct i915_fp_compile *p,
 216                               uint dest,
 217                               uint destmask,
 218                               uint sampler, uint coord, uint op);
 219
 220 extern uint i915_emit_arith(struct i915_fp_compile *p,
 221                               uint op,
 222                               uint dest,
 223                               uint mask,
 224                               uint saturate,
 225                               uint src0, uint src1, uint src2);
 226
 227 extern uint i915_emit_decl(struct i915_fp_compile *p,
 228                              uint type, uint nr, uint d0_flags);
 229
 230
 231 extern uint i915_emit_const1f(struct i915_fp_compile *p, float c0);
 232
 233 extern uint i915_emit_const2f(struct i915_fp_compile *p,
 234                                 float c0, float c1);
 235
 236 extern uint i915_emit_const4fv(struct i915_fp_compile *p,
 237                                  const float * c);
 238
 239 extern uint i915_emit_const4f(struct i915_fp_compile *p,
 240                                 float c0, float c1,
 241                                 float c2, float c3);
 242
 243
 244 /*======================================================================
 245  * i915_fpc_debug.c
 246  */
 247 extern void i915_disassemble_program(const uint * program, uint sz);
 248
 249
 250 /*======================================================================
 251  * i915_fpc_translate.c
 252  */
 253
 254 extern void
 255 i915_program_error(struct i915_fp_compile *p, const char *msg);
 256
 257 extern void
 258 i915_translate_fragment_program(struct i915_context *i915);
 259
 260
 261 #endif