src/mesa/drivers/dri/i915/i915_program.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_PROGRAM_H
  30 #define I915_PROGRAM_H
  31
  32 #include "i915_context.h"
  33 #include "i915_reg.h"
  34
  35
  36
  37 /* Having zero and one in here makes the definition of swizzle a lot
  38  * easier.
  39  */
  40 #define UREG_TYPE_SHIFT               29
  41 #define UREG_NR_SHIFT                 24
  42 #define UREG_CHANNEL_X_NEGATE_SHIFT   23
  43 #define UREG_CHANNEL_X_SHIFT          20
  44 #define UREG_CHANNEL_Y_NEGATE_SHIFT   19
  45 #define UREG_CHANNEL_Y_SHIFT          16
  46 #define UREG_CHANNEL_Z_NEGATE_SHIFT   15
  47 #define UREG_CHANNEL_Z_SHIFT          12
  48 #define UREG_CHANNEL_W_NEGATE_SHIFT   11
  49 #define UREG_CHANNEL_W_SHIFT          8
  50 #define UREG_CHANNEL_ZERO_NEGATE_MBZ  5
  51 #define UREG_CHANNEL_ZERO_SHIFT       4
  52 #define UREG_CHANNEL_ONE_NEGATE_MBZ   1
  53 #define UREG_CHANNEL_ONE_SHIFT        0
  54
  55 #define UREG_BAD          0xffffffff /* not a valid ureg */
  56
  57 #define X    SRC_X
  58 #define Y    SRC_Y
  59 #define Z    SRC_Z
  60 #define W    SRC_W
  61 #define ZERO SRC_ZERO
  62 #define ONE  SRC_ONE
  63
  64 /* Construct a ureg:
  65  */
  66 #define UREG( type, nr ) (((type)<< UREG_TYPE_SHIFT) |          \
  67                           ((nr)  << UREG_NR_SHIFT) |            \
  68                           (X     << UREG_CHANNEL_X_SHIFT) |     \
  69                           (Y     << UREG_CHANNEL_Y_SHIFT) |     \
  70                           (Z     << UREG_CHANNEL_Z_SHIFT) |     \
  71                           (W     << UREG_CHANNEL_W_SHIFT) |     \
  72                           (ZERO  << UREG_CHANNEL_ZERO_SHIFT) |  \
  73                           (ONE   << UREG_CHANNEL_ONE_SHIFT))
  74
  75 #define GET_CHANNEL_SRC( reg, channel ) ((reg<<(channel*4)) & (0xf<<20))
  76 #define CHANNEL_SRC( src, channel ) (src>>(channel*4))
  77
  78 #define GET_UREG_TYPE(reg) (((reg)>>UREG_TYPE_SHIFT)&REG_TYPE_MASK)
  79 #define GET_UREG_NR(reg)   (((reg)>>UREG_NR_SHIFT)&REG_NR_MASK)
  80
  81
  82
  83 #define UREG_XYZW_CHANNEL_MASK 0x00ffff00
  84
  85 /* One neat thing about the UREG representation:
  86  */
  87 static __inline int swizzle( int reg, int x, int y, int z, int w )
  88 {
  89    return ((reg & ~UREG_XYZW_CHANNEL_MASK) |
  90            CHANNEL_SRC( GET_CHANNEL_SRC( reg, x ), 0 ) |
  91            CHANNEL_SRC( GET_CHANNEL_SRC( reg, y ), 1 ) |
  92            CHANNEL_SRC( GET_CHANNEL_SRC( reg, z ), 2 ) |
  93            CHANNEL_SRC( GET_CHANNEL_SRC( reg, w ), 3 ));
  94 }
  95
  96 /* Another neat thing about the UREG representation:
  97  */
  98 static __inline int negate( int reg, int x, int y, int z, int w )
  99 {
 100    return reg ^ (((x&1)<<UREG_CHANNEL_X_NEGATE_SHIFT)|
 101                  ((y&1)<<UREG_CHANNEL_Y_NEGATE_SHIFT)|
 102                  ((z&1)<<UREG_CHANNEL_Z_NEGATE_SHIFT)|
 103                  ((w&1)<<UREG_CHANNEL_W_NEGATE_SHIFT));
 104 }
 105
 106
 107 extern GLuint i915_get_temp( struct i915_fragment_program *p );
 108 extern GLuint i915_get_utemp( struct i915_fragment_program *p );
 109 extern void i915_release_utemps( struct i915_fragment_program *p );
 110
 111
 112 extern GLuint i915_emit_texld( struct i915_fragment_program *p,
 113                               GLuint dest,
 114                               GLuint destmask,
 115                               GLuint sampler,
 116                               GLuint coord,
 117                               GLuint op );
 118
 119 extern GLuint i915_emit_arith( struct i915_fragment_program *p,
 120                               GLuint op,
 121                               GLuint dest,
 122                               GLuint mask,
 123                               GLuint saturate,
 124                               GLuint src0,
 125                               GLuint src1,
 126                               GLuint src2 );
 127
 128 extern GLuint i915_emit_decl( struct i915_fragment_program *p,
 129                              GLuint type, GLuint nr, GLuint d0_flags );
 130
 131
 132 extern GLuint i915_emit_const1f( struct i915_fragment_program *p,
 133                                 GLfloat c0 );
 134
 135 extern GLuint i915_emit_const2f( struct i915_fragment_program *p,
 136                                 GLfloat c0, GLfloat c1 );
 137
 138 extern GLuint i915_emit_const4fv( struct i915_fragment_program *p,
 139                                  const GLfloat *c );
 140
 141 extern GLuint i915_emit_const4f( struct i915_fragment_program *p,
 142                                 GLfloat c0, GLfloat c1,
 143                                 GLfloat c2, GLfloat c3 );
 144
 145
 146 extern GLuint i915_emit_param4fv( struct i915_fragment_program *p,
 147                                  const GLfloat *values );
 148
 149 extern void i915_program_error( struct i915_fragment_program *p,
 150                                 const char *msg );
 151
 152 extern void i915_init_program( i915ContextPtr i915,
 153                               struct i915_fragment_program *p );
 154
 155 extern void i915_upload_program( i915ContextPtr i915,
 156                                 struct i915_fragment_program *p );
 157
 158 extern void i915_fini_program( struct i915_fragment_program *p );
 159
 160
 161
 162
 163 #endif