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 radeon_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 /* For rgb and alpha instructions when arg[n].Source = RC_PAIR_PRESUB_SRC, then 53 * the presubtract value will be used, and 54 * {RGB,Alpha}.Src[RC_PAIR_PRESUB_SRC].File will be set to RC_FILE_PRESUB. 55 */ 56 #define RC_PAIR_PRESUB_SRC 3 57 58 struct rc_pair_instruction_source { 59 unsigned int Used:1; 60 unsigned int File:4; 61 unsigned int Index:RC_REGISTER_INDEX_BITS; 62 }; 63 64 struct rc_pair_instruction_arg { 65 unsigned int Source:2; 66 unsigned int Swizzle:12; 67 unsigned int Abs:1; 68 unsigned int Negate:1; 69 }; 70 71 struct rc_pair_sub_instruction { 72 unsigned int Opcode:8; 73 unsigned int DestIndex:RC_REGISTER_INDEX_BITS; 74 unsigned int WriteMask:4; 75 unsigned int Target:2; 76 unsigned int OutputWriteMask:3; 77 unsigned int DepthWriteMask:1; 78 unsigned int Saturate:1; 79 unsigned int Omod:3; 80 81 struct rc_pair_instruction_source Src[4]; 82 struct rc_pair_instruction_arg Arg[3]; 83 }; 84 85 struct rc_pair_instruction { 86 struct rc_pair_sub_instruction RGB; 87 struct rc_pair_sub_instruction Alpha; 88 89 unsigned int WriteALUResult:2; 90 unsigned int ALUResultCompare:3; 91 unsigned int Nop:1; 92 unsigned int SemWait:1; 93 }; 94 95 typedef void (*rc_pair_foreach_src_fn) 96 (void *, struct rc_pair_instruction_source *); 97 98 /** 99 * General helper functions for dealing with the paired instruction format. 100 */ 101 /*@{*/ 102 int rc_pair_alloc_source(struct rc_pair_instruction *pair, 103 unsigned int rgb, unsigned int alpha, 104 rc_register_file file, unsigned int index); 105 106 void rc_pair_foreach_source_that_alpha_reads( 107 struct rc_pair_instruction * pair, 108 void * data, 109 rc_pair_foreach_src_fn cb); 110 111 void rc_pair_foreach_source_that_rgb_reads( 112 struct rc_pair_instruction * pair, 113 void * data, 114 rc_pair_foreach_src_fn cb); 115 116 struct rc_pair_instruction_source * rc_pair_get_src( 117 struct rc_pair_instruction * pair_inst, 118 struct rc_pair_instruction_arg * arg); 119 120 int rc_pair_get_src_index( 121 struct rc_pair_instruction * pair_inst, 122 struct rc_pair_instruction_source * src); 123 /*@}*/ 124 125 126 /** 127 * Compiler passes that operate with the paired format. 128 */ 129 /*@{*/ 130 struct radeon_pair_handler; 131 132 void rc_pair_translate(struct radeon_compiler *cc, void *user); 133 void rc_pair_schedule(struct radeon_compiler *cc, void *user); 134 void rc_pair_regalloc(struct radeon_compiler *cc, void *user); 135 void rc_pair_remove_dead_sources(struct radeon_compiler *c, void *user); 136 /*@}*/ 137 138 #endif /* __RADEON_PROGRAM_PAIR_H_ */ 139