src/gallium/drivers/i915/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
  33 #include "i915_context.h"
  34 #include "i915_reg.h"
  35
  36
  37
  38 #define I915_PROGRAM_SIZE 192
  39
  40 /* Use those indices for pos/face routing, must be >= I915_TEX_UNITS */
  41 #define I915_SEMANTIC_POS  10
  42 #define I915_SEMANTIC_FACE 11
  43
  44
  45 /**
  46  * Program translation state
  47  */
  48 struct i915_fp_compile {
  49    struct i915_fragment_shader *shader;  /* the shader we're compiling */
  50
  51    boolean used_constants[I915_MAX_CONSTANT];
  52
  53    /** maps TGSI immediate index to constant slot */
  54    uint num_immediates;
  55    uint immediates_map[I915_MAX_CONSTANT];
  56    float immediates[I915_MAX_CONSTANT][4];
  57
  58    boolean first_instruction;
  59
  60    uint declarations[I915_PROGRAM_SIZE];
  61    uint program[I915_PROGRAM_SIZE];
  62
  63    uint *csr;            /**< Cursor, points into program. */
  64
  65    uint *decl;           /**< Cursor, points into declarations. */
  66
  67    uint decl_s;          /**< flags for which s regs need to be decl'd */
  68    uint decl_t;          /**< flags for which t regs need to be decl'd */
  69
  70    uint temp_flag;       /**< Tracks temporary regs which are in use */
  71    uint utemp_flag;      /**< Tracks TYPE_U temporary regs which are in use */
  72
  73    uint register_phases[16];
  74    uint nr_tex_indirect;
  75    uint nr_tex_insn;
  76    uint nr_alu_insn;
  77    uint nr_decl_insn;
  78
  79    boolean error;      /**< Set if i915_program_error() is called */
  80    uint NumNativeInstructions;
  81    uint NumNativeAluInstructions;
  82    uint NumNativeTexInstructions;
  83    uint NumNativeTexIndirections;
  84 };
  85
  86
  87 /* Having zero and one in here makes the definition of swizzle a lot
  88  * easier.
  89  */
  90 #define UREG_TYPE_SHIFT               29
  91 #define UREG_NR_SHIFT                 24
  92 #define UREG_CHANNEL_X_NEGATE_SHIFT   23
  93 #define UREG_CHANNEL_X_SHIFT          20
  94 #define UREG_CHANNEL_Y_NEGATE_SHIFT   19
  95 #define UREG_CHANNEL_Y_SHIFT          16
  96 #define UREG_CHANNEL_Z_NEGATE_SHIFT   15
  97 #define UREG_CHANNEL_Z_SHIFT          12
  98 #define UREG_CHANNEL_W_NEGATE_SHIFT   11
  99 #define UREG_CHANNEL_W_SHIFT          8
 100 #define UREG_CHANNEL_ZERO_NEGATE_MBZ  5
 101 #define UREG_CHANNEL_ZERO_SHIFT       4
 102 #define UREG_CHANNEL_ONE_NEGATE_MBZ   1
 103 #define UREG_CHANNEL_ONE_SHIFT        0
 104
 105 #define UREG_BAD          0xffffffff    /* not a valid ureg */
 106
 107 #define X    SRC_X
 108 #define Y    SRC_Y
 109 #define Z    SRC_Z
 110 #define W    SRC_W
 111 #define ZERO SRC_ZERO
 112 #define ONE  SRC_ONE
 113
 114 /* Construct a ureg:
 115  */
 116 #define UREG( type, nr ) (((type)<< UREG_TYPE_SHIFT) |          \
 117                           ((nr)  << UREG_NR_SHIFT) |            \
 118                           (X     << UREG_CHANNEL_X_SHIFT) |     \
 119                           (Y     << UREG_CHANNEL_Y_SHIFT) |     \
 120                           (Z     << UREG_CHANNEL_Z_SHIFT) |     \
 121                           (W     << UREG_CHANNEL_W_SHIFT) |     \
 122                           (ZERO  << UREG_CHANNEL_ZERO_SHIFT) |  \
 123                           (ONE   << UREG_CHANNEL_ONE_SHIFT))
 124
 125 #define GET_CHANNEL_SRC( reg, channel ) ((reg<<(channel*4)) & (0xf<<20))
 126 #define CHANNEL_SRC( src, channel ) (src>>(channel*4))
 127
 128 #define GET_UREG_TYPE(reg) (((reg)>>UREG_TYPE_SHIFT)&REG_TYPE_MASK)
 129 #define GET_UREG_NR(reg)   (((reg)>>UREG_NR_SHIFT)&REG_NR_MASK)
 130
 131
 132
 133 #define UREG_XYZW_CHANNEL_MASK 0x00ffff00
 134
 135 /* One neat thing about the UREG representation:
 136  */
 137 static INLINE int
 138 swizzle(int reg, uint x, uint y, uint z, uint w)
 139 {
 140    assert(x <= SRC_ONE);
 141    assert(y <= SRC_ONE);
 142    assert(z <= SRC_ONE);
 143    assert(w <= SRC_ONE);
 144    return ((reg & ~UREG_XYZW_CHANNEL_MASK) |
 145            CHANNEL_SRC(GET_CHANNEL_SRC(reg, x), 0) |
 146            CHANNEL_SRC(GET_CHANNEL_SRC(reg, y), 1) |
 147            CHANNEL_SRC(GET_CHANNEL_SRC(reg, z), 2) |
 148            CHANNEL_SRC(GET_CHANNEL_SRC(reg, w), 3));
 149 }
 150
 151
 152
 153 /***********************************************************************
 154  * Public interface for the compiler
 155  */
 156 extern void
 157 i915_translate_fragment_program( struct i915_context *i915,
 158                                  struct i915_fragment_shader *fs);
 159
 160
 161
 162 extern uint i915_get_temp(struct i915_fp_compile *p);
 163 extern uint i915_get_utemp(struct i915_fp_compile *p);
 164 extern void i915_release_utemps(struct i915_fp_compile *p);
 165
 166
 167 extern uint i915_emit_texld(struct i915_fp_compile *p,
 168                               uint dest,
 169                               uint destmask,
 170                               uint sampler, uint coord, uint op);
 171
 172 extern uint i915_emit_arith(struct i915_fp_compile *p,
 173                               uint op,
 174                               uint dest,
 175                               uint mask,
 176                               uint saturate,
 177                               uint src0, uint src1, uint src2);
 178
 179 extern uint i915_emit_decl(struct i915_fp_compile *p,
 180                              uint type, uint nr, uint d0_flags);
 181
 182
 183 extern uint i915_emit_const1f(struct i915_fp_compile *p, float c0);
 184
 185 extern uint i915_emit_const2f(struct i915_fp_compile *p,
 186                                 float c0, float c1);
 187
 188 extern uint i915_emit_const4fv(struct i915_fp_compile *p,
 189                                  const float * c);
 190
 191 extern uint i915_emit_const4f(struct i915_fp_compile *p,
 192                                 float c0, float c1,
 193                                 float c2, float c3);
 194
 195
 196 /*======================================================================
 197  * i915_fpc_debug.c
 198  */
 199 extern void i915_disassemble_program(const uint * program, uint sz);
 200
 201
 202 /*======================================================================
 203  * i915_fpc_translate.c
 204  */
 205
 206 extern void
 207 i915_program_error(struct i915_fp_compile *p, const char *msg, ...);
 208
 209
 210 #endif