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