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         rc_register_file File:3;
  56         unsigned int Index:RC_REGISTER_INDEX_BITS;
  57 };
  58
  59 struct radeon_pair_instruction_rgb {
  60         rc_opcode Opcode:8;
  61         unsigned int DestIndex:RC_REGISTER_INDEX_BITS;
  62         unsigned int WriteMask:3;
  63         unsigned int OutputWriteMask:3;
  64         unsigned int Saturate:1;
  65
  66         struct radeon_pair_instruction_source Src[3];
  67
  68         struct {
  69                 unsigned int Source:2;
  70                 unsigned int Swizzle:9;
  71                 unsigned int Abs:1;
  72                 unsigned int Negate:1;
  73         } Arg[3];
  74 };
  75
  76 struct radeon_pair_instruction_alpha {
  77         rc_opcode Opcode:8;
  78         unsigned int DestIndex:RC_REGISTER_INDEX_BITS;
  79         unsigned int WriteMask:1;
  80         unsigned int OutputWriteMask:1;
  81         unsigned int DepthWriteMask:1;
  82         unsigned int Saturate:1;
  83
  84         struct radeon_pair_instruction_source Src[3];
  85
  86         struct {
  87                 unsigned int Source:2;
  88                 unsigned int Swizzle:3;
  89                 unsigned int Abs:1;
  90                 unsigned int Negate:1;
  91         } Arg[3];
  92 };
  93
  94 struct rc_pair_instruction {
  95         struct radeon_pair_instruction_rgb RGB;
  96         struct radeon_pair_instruction_alpha Alpha;
  97
  98         rc_write_aluresult WriteALUResult:2;
  99         rc_compare_func ALUResultCompare:3;
 100 };
 101
 102
 103 /**
 104  * General helper functions for dealing with the paired instruction format.
 105  */
 106 /*@{*/
 107 int rc_pair_alloc_source(struct rc_pair_instruction *pair,
 108         unsigned int rgb, unsigned int alpha,
 109         rc_register_file file, unsigned int index);
 110 /*@}*/
 111
 112
 113 /**
 114  * Compiler passes that operate with the paired format.
 115  */
 116 /*@{*/
 117 struct radeon_pair_handler;
 118
 119 void rc_pair_translate(struct r300_fragment_program_compiler *c);
 120 void rc_pair_schedule(struct r300_fragment_program_compiler *c);
 121 void rc_pair_regalloc(struct r300_fragment_program_compiler *c, unsigned maxtemps);
 122 /*@}*/
 123
 124 #endif /* __RADEON_PROGRAM_PAIR_H_ */