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
  42
  43 /**
  44  * Program translation state
  45  */
  46 struct i915_fp_compile {
  47    struct pipe_shader_state *shader;
  48
  49    struct vertex_info *vertex_info;
  50
  51    uint declarations[I915_PROGRAM_SIZE];
  52    uint program[I915_PROGRAM_SIZE];
  53
  54    /** points into the i915->current.constants array: */
  55    float (*constants)[4];
  56    uint num_constants;
  57    uint constant_flags[I915_MAX_CONSTANT]; /**< status of each constant */
  58
  59    uint *csr;                 /* Cursor, points into program.
  60                                  */
  61
  62    uint *decl;                /* Cursor, points into declarations.
  63                                  */
  64
  65    uint decl_s;               /* flags for which s regs need to be decl'd */
  66    uint decl_t;               /* flags for which t regs need to be decl'd */
  67
  68    uint temp_flag;            /* Tracks temporary regs which are in
  69                                  * use.
  70                                  */
  71
  72    uint utemp_flag;           /* Tracks TYPE_U temporary regs which are in
  73                                  * use.
  74                                  */
  75
  76    uint nr_tex_indirect;
  77    uint nr_tex_insn;
  78    uint nr_alu_insn;
  79    uint nr_decl_insn;
  80
  81    boolean error;      /**< Set if i915_program_error() is called */
  82    uint wpos_tex;
  83    uint NumNativeInstructions;
  84    uint NumNativeAluInstructions;
  85    uint NumNativeTexInstructions;
  86    uint NumNativeTexIndirections;
  87 };
  88
  89
  90 /* Having zero and one in here makes the definition of swizzle a lot
  91  * easier.
  92  */
  93 #define UREG_TYPE_SHIFT               29
  94 #define UREG_NR_SHIFT                 24
  95 #define UREG_CHANNEL_X_NEGATE_SHIFT   23
  96 #define UREG_CHANNEL_X_SHIFT          20
  97 #define UREG_CHANNEL_Y_NEGATE_SHIFT   19
  98 #define UREG_CHANNEL_Y_SHIFT          16
  99 #define UREG_CHANNEL_Z_NEGATE_SHIFT   15
 100 #define UREG_CHANNEL_Z_SHIFT          12
 101 #define UREG_CHANNEL_W_NEGATE_SHIFT   11
 102 #define UREG_CHANNEL_W_SHIFT          8
 103 #define UREG_CHANNEL_ZERO_NEGATE_MBZ  5
 104 #define UREG_CHANNEL_ZERO_SHIFT       4
 105 #define UREG_CHANNEL_ONE_NEGATE_MBZ   1
 106 #define UREG_CHANNEL_ONE_SHIFT        0
 107
 108 #define UREG_BAD          0xffffffff    /* not a valid ureg */
 109
 110 #define X    SRC_X
 111 #define Y    SRC_Y
 112 #define Z    SRC_Z
 113 #define W    SRC_W
 114 #define ZERO SRC_ZERO
 115 #define ONE  SRC_ONE
 116
 117 /* Construct a ureg:
 118  */
 119 #define UREG( type, nr ) (((type)<< UREG_TYPE_SHIFT) |          \
 120                           ((nr)  << UREG_NR_SHIFT) |            \
 121                           (X     << UREG_CHANNEL_X_SHIFT) |     \
 122                           (Y     << UREG_CHANNEL_Y_SHIFT) |     \
 123                           (Z     << UREG_CHANNEL_Z_SHIFT) |     \
 124                           (W     << UREG_CHANNEL_W_SHIFT) |     \
 125                           (ZERO  << UREG_CHANNEL_ZERO_SHIFT) |  \
 126                           (ONE   << UREG_CHANNEL_ONE_SHIFT))
 127
 128 #define GET_CHANNEL_SRC( reg, channel ) ((reg<<(channel*4)) & (0xf<<20))
 129 #define CHANNEL_SRC( src, channel ) (src>>(channel*4))
 130
 131 #define GET_UREG_TYPE(reg) (((reg)>>UREG_TYPE_SHIFT)&REG_TYPE_MASK)
 132 #define GET_UREG_NR(reg)   (((reg)>>UREG_NR_SHIFT)&REG_NR_MASK)
 133
 134
 135
 136 #define UREG_XYZW_CHANNEL_MASK 0x00ffff00
 137
 138 /* One neat thing about the UREG representation:
 139  */
 140 static INLINE int
 141 swizzle(int reg, uint x, uint y, uint z, uint w)
 142 {
 143    assert(x <= SRC_ONE);
 144    assert(y <= SRC_ONE);
 145    assert(z <= SRC_ONE);
 146    assert(w <= SRC_ONE);
 147    return ((reg & ~UREG_XYZW_CHANNEL_MASK) |
 148            CHANNEL_SRC(GET_CHANNEL_SRC(reg, x), 0) |
 149            CHANNEL_SRC(GET_CHANNEL_SRC(reg, y), 1) |
 150            CHANNEL_SRC(GET_CHANNEL_SRC(reg, z), 2) |
 151            CHANNEL_SRC(GET_CHANNEL_SRC(reg, w), 3));
 152 }
 153
 154
 155
 156 /***********************************************************************
 157  * Public interface for the compiler
 158  */
 159 extern void i915_translate_fragment_program( struct i915_context *i915 );
 160
 161
 162
 163 extern uint i915_get_temp(struct i915_fp_compile *p);
 164 extern uint i915_get_utemp(struct i915_fp_compile *p);
 165 extern void i915_release_utemps(struct i915_fp_compile *p);
 166
 167
 168 extern uint i915_emit_texld(struct i915_fp_compile *p,
 169                               uint dest,
 170                               uint destmask,
 171                               uint sampler, uint coord, uint op);
 172
 173 extern uint i915_emit_arith(struct i915_fp_compile *p,
 174                               uint op,
 175                               uint dest,
 176                               uint mask,
 177                               uint saturate,
 178                               uint src0, uint src1, uint src2);
 179
 180 extern uint i915_emit_decl(struct i915_fp_compile *p,
 181                              uint type, uint nr, uint d0_flags);
 182
 183
 184 extern uint i915_emit_const1f(struct i915_fp_compile *p, float c0);
 185
 186 extern uint i915_emit_const2f(struct i915_fp_compile *p,
 187                                 float c0, float c1);
 188
 189 extern uint i915_emit_const4fv(struct i915_fp_compile *p,
 190                                  const float * c);
 191
 192 extern uint i915_emit_const4f(struct i915_fp_compile *p,
 193                                 float c0, float c1,
 194                                 float c2, float c3);
 195
 196
 197 /*======================================================================
 198  * i915_fpc_debug.c
 199  */
 200 extern void i915_disassemble_program(const uint * program, uint sz);
 201
 202
 203 /*======================================================================
 204  * i915_fpc_translate.c
 205  */
 206
 207 extern void
 208 i915_program_error(struct i915_fp_compile *p, const char *msg);
 209
 210 extern void
 211 i915_translate_fragment_program(struct i915_context *i915);
 212
 213
 214 #endif