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