src/mesa/drivers/dri/i915/i915_program.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   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 VMWARE 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
  88 swizzle(int reg, int x, int y, int z, int w)
  89 {
  90    return ((reg & ~UREG_XYZW_CHANNEL_MASK) |
  91            CHANNEL_SRC(GET_CHANNEL_SRC(reg, x), 0) |
  92            CHANNEL_SRC(GET_CHANNEL_SRC(reg, y), 1) |
  93            CHANNEL_SRC(GET_CHANNEL_SRC(reg, z), 2) |
  94            CHANNEL_SRC(GET_CHANNEL_SRC(reg, w), 3));
  95 }
  96
  97 /* Another neat thing about the UREG representation:
  98  */
  99 static inline int
 100 negate(int reg, int x, int y, int z, int w)
 101 {
 102    return reg ^ (((x & 1) << UREG_CHANNEL_X_NEGATE_SHIFT) |
 103                  ((y & 1) << UREG_CHANNEL_Y_NEGATE_SHIFT) |
 104                  ((z & 1) << UREG_CHANNEL_Z_NEGATE_SHIFT) |
 105                  ((w & 1) << UREG_CHANNEL_W_NEGATE_SHIFT));
 106 }
 107
 108
 109 extern GLuint i915_get_temp(struct i915_fragment_program *p);
 110 extern GLuint i915_get_utemp(struct i915_fragment_program *p);
 111 extern void i915_release_utemps(struct i915_fragment_program *p);
 112
 113
 114 extern GLuint i915_emit_texld(struct i915_fragment_program *p,
 115                               GLuint live_regs,
 116                               GLuint dest,
 117                               GLuint destmask,
 118                               GLuint sampler, GLuint coord, GLuint op);
 119
 120 extern GLuint i915_emit_arith(struct i915_fragment_program *p,
 121                               GLuint op,
 122                               GLuint dest,
 123                               GLuint mask,
 124                               GLuint saturate,
 125                               GLuint src0, GLuint src1, GLuint src2);
 126
 127 extern GLuint i915_emit_decl(struct i915_fragment_program *p,
 128                              GLuint type, GLuint nr, GLuint d0_flags);
 129
 130
 131 extern GLuint i915_emit_const1f(struct i915_fragment_program *p, GLfloat c0);
 132
 133 extern GLuint i915_emit_const2f(struct i915_fragment_program *p,
 134                                 GLfloat c0, GLfloat c1);
 135
 136 extern GLuint i915_emit_const4fv(struct i915_fragment_program *p,
 137                                  const GLfloat * c);
 138
 139 extern GLuint i915_emit_const4f(struct i915_fragment_program *p,
 140                                 GLfloat c0, GLfloat c1,
 141                                 GLfloat c2, GLfloat c3);
 142
 143
 144 extern GLuint i915_emit_param4fv(struct i915_fragment_program *p,
 145                                  const GLfloat * values);
 146
 147 extern void i915_program_error(struct i915_fragment_program *p,
 148                                const char *fmt, ...);
 149
 150 extern void i915_init_program(struct i915_context *i915,
 151                               struct i915_fragment_program *p);
 152
 153 extern void i915_upload_program(struct i915_context *i915,
 154                                 struct i915_fragment_program *p);
 155
 156 extern void i915_fini_program(struct i915_fragment_program *p);
 157
 158 extern void i915_update_program(struct gl_context *ctx);
 159
 160 #endif