src/mesa/drivers/dri/r300/compiler/radeon_program_pair.h

   1 /*
   2  * Copyright (C) 2008 Nicolai Haehnle.
   3  *
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining
   7  * a 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, sublicense, 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
  16  * portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  */
  27
  28 #ifndef __RADEON_PROGRAM_PAIR_H_
  29 #define __RADEON_PROGRAM_PAIR_H_
  30
  31 #include "radeon_code.h"
  32 #include "radeon_opcodes.h"
  33 #include "radeon_program_constants.h"
  34
  35 struct r300_fragment_program_compiler;
  36
  37
  38 /**
  39  * \file
  40  * Represents a paired ALU instruction, as found in R300 and R500
  41  * fragment programs.
  42  *
  43  * Note that this representation is taking some liberties as far
  44  * as register files are concerned, to allow separate register
  45  * allocation.
  46  *
  47  * Also note that there are some subtleties in that the semantics
  48  * of certain opcodes are implicitly changed in this representation;
  49  * see \ref rc_pair_translate
  50  */
  51
  52
  53 struct radeon_pair_instruction_source {
  54         unsigned int Used:1;
  55         unsigned int File:3;
  56         unsigned int Index:RC_REGISTER_INDEX_BITS;
  57 };
  58
  59 struct radeon_pair_instruction_rgb {
  60         unsigned int Opcode:8;
  61         unsigned int DestIndex:RC_REGISTER_INDEX_BITS;
  62         unsigned int WriteMask:3;
  63     unsigned int Target:2;
  64         unsigned int OutputWriteMask:3;
  65         unsigned int Saturate:1;
  66
  67         struct radeon_pair_instruction_source Src[3];
  68
  69         struct {
  70                 unsigned int Source:2;
  71                 unsigned int Swizzle:9;
  72                 unsigned int Abs:1;
  73                 unsigned int Negate:1;
  74         } Arg[3];
  75 };
  76
  77 struct radeon_pair_instruction_alpha {
  78         unsigned int Opcode:8;
  79         unsigned int DestIndex:RC_REGISTER_INDEX_BITS;
  80         unsigned int WriteMask:1;
  81     unsigned int Target:2;
  82         unsigned int OutputWriteMask:1;
  83         unsigned int DepthWriteMask:1;
  84         unsigned int Saturate:1;
  85
  86         struct radeon_pair_instruction_source Src[3];
  87
  88         struct {
  89                 unsigned int Source:2;
  90                 unsigned int Swizzle:3;
  91                 unsigned int Abs:1;
  92                 unsigned int Negate:1;
  93         } Arg[3];
  94 };
  95
  96 struct rc_pair_instruction {
  97         struct radeon_pair_instruction_rgb RGB;
  98         struct radeon_pair_instruction_alpha Alpha;
  99
 100         unsigned int WriteALUResult:2;
 101         unsigned int ALUResultCompare:3;
 102 };
 103
 104
 105 /**
 106  * General helper functions for dealing with the paired instruction format.
 107  */
 108 /*@{*/
 109 int rc_pair_alloc_source(struct rc_pair_instruction *pair,
 110         unsigned int rgb, unsigned int alpha,
 111         rc_register_file file, unsigned int index);
 112 /*@}*/
 113
 114
 115 /**
 116  * Compiler passes that operate with the paired format.
 117  */
 118 /*@{*/
 119 struct radeon_pair_handler;
 120
 121 void rc_pair_translate(struct r300_fragment_program_compiler *c);
 122 void rc_pair_schedule(struct r300_fragment_program_compiler *c);
 123 void rc_pair_regalloc(struct r300_fragment_program_compiler *c);
 124 /*@}*/
 125
 126 #endif /* __RADEON_PROGRAM_PAIR_H_ */