11c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák/* 21c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * Copyright (C) 2008-2009 Nicolai Haehnle. 31c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * 41c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * All Rights Reserved. 51c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * 61c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * Permission is hereby granted, free of charge, to any person obtaining 71c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * a copy of this software and associated documentation files (the 81c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * "Software"), to deal in the Software without restriction, including 91c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * without limitation the rights to use, copy, modify, merge, publish, 101c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * distribute, sublicense, and/or sell copies of the Software, and to 111c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * permit persons to whom the Software is furnished to do so, subject to 121c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * the following conditions: 131c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * 141c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * The above copyright notice and this permission notice (including the 151c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * next paragraph) shall be included in all copies or substantial 161c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * portions of the Software. 171c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * 181c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 191c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 201c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 211c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 221c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 231c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 241c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 251c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * 261c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák */ 271c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 281c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák#include "radeon_program_pair.h" 291c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 301c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák#include "radeon_compiler_util.h" 311c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 321c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák#include <stdlib.h> 331c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 341c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák/** 351c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * Return the source slot where we installed the given register access, 361c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * or -1 if no slot was free anymore. 371c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák */ 381c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšákint rc_pair_alloc_source(struct rc_pair_instruction *pair, 391c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int rgb, unsigned int alpha, 401c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák rc_register_file file, unsigned int index) 411c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák{ 421c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák int candidate = -1; 431c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák int candidate_quality = -1; 441c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int alpha_used = 0; 451c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int rgb_used = 0; 461c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák int i; 471c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 481c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if ((!rgb && !alpha) || file == RC_FILE_NONE) 491c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák return 0; 501c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 511c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák /* Make sure only one presubtract operation is used per instruction. */ 521c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (file == RC_FILE_PRESUB) { 531c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (rgb && pair->RGB.Src[RC_PAIR_PRESUB_SRC].Used 541c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák && index != pair->RGB.Src[RC_PAIR_PRESUB_SRC].Index) { 551c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák return -1; 561c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 571c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 581c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (alpha && pair->Alpha.Src[RC_PAIR_PRESUB_SRC].Used 591c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák && index != pair->Alpha.Src[RC_PAIR_PRESUB_SRC].Index) { 601c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák return -1; 611c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 621c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 631c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 641c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák for(i = 0; i < 3; ++i) { 651c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák int q = 0; 661c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (rgb) { 671c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (pair->RGB.Src[i].Used) { 681c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (pair->RGB.Src[i].File != file || 691c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->RGB.Src[i].Index != index) { 701c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák rgb_used++; 711c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák continue; 721c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 731c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák q++; 741c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 751c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 761c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (alpha) { 771c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (pair->Alpha.Src[i].Used) { 781c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (pair->Alpha.Src[i].File != file || 791c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->Alpha.Src[i].Index != index) { 801c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák alpha_used++; 811c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák continue; 821c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 831c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák q++; 841c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 851c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 861c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (q > candidate_quality) { 871c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák candidate_quality = q; 881c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák candidate = i; 891c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 901c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 911c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 921c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (file == RC_FILE_PRESUB) { 931c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák candidate = RC_PAIR_PRESUB_SRC; 941c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } else if (candidate < 0 || (rgb && rgb_used > 2) 951c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák || (alpha && alpha_used > 2)) { 961c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák return -1; 971c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 981c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 991c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák /* candidate >= 0 */ 1001c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 1011c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (rgb) { 1021c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->RGB.Src[candidate].Used = 1; 1031c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->RGB.Src[candidate].File = file; 1041c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->RGB.Src[candidate].Index = index; 1051c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (candidate == RC_PAIR_PRESUB_SRC) { 1061c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák /* For registers with the RC_FILE_PRESUB file, 1071c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * the index stores the presubtract op. */ 1081c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák int src_regs = rc_presubtract_src_reg_count(index); 1091c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák for(i = 0; i < src_regs; i++) { 1101c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->RGB.Src[i].Used = 1; 1111c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 1121c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 1131c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 1141c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (alpha) { 1151c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->Alpha.Src[candidate].Used = 1; 1161c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->Alpha.Src[candidate].File = file; 1171c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->Alpha.Src[candidate].Index = index; 1181c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (candidate == RC_PAIR_PRESUB_SRC) { 1191c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák /* For registers with the RC_FILE_PRESUB file, 1201c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * the index stores the presubtract op. */ 1211c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák int src_regs = rc_presubtract_src_reg_count(index); 1221c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák for(i=0; i < src_regs; i++) { 1231c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->Alpha.Src[i].Used = 1; 1241c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 1251c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 1261c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 1271c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 1281c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák return candidate; 1291c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák} 1301c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 1311c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšákstatic void pair_foreach_source_callback( 1321c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák struct rc_pair_instruction * pair, 1331c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák void * data, 1341c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák rc_pair_foreach_src_fn cb, 1351c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int swz, 1361c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int src) 1371c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák{ 1381c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák /* swz > 3 means that the swizzle is either not used, or a constant 1391c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * swizzle (e.g. 0, 1, 0.5). */ 1401c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if(swz > 3) 1411c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák return; 1421c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 1431c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if(swz == RC_SWIZZLE_W) { 1441c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (src == RC_PAIR_PRESUB_SRC) { 1451c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int i; 1461c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int src_count = rc_presubtract_src_reg_count( 1471c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->Alpha.Src[RC_PAIR_PRESUB_SRC].Index); 1481c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák for(i = 0; i < src_count; i++) { 1491c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák cb(data, &pair->Alpha.Src[i]); 1501c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 1511c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } else { 1521c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák cb(data, &pair->Alpha.Src[src]); 1531c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 1541c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } else { 1551c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (src == RC_PAIR_PRESUB_SRC) { 1561c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int i; 1571c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int src_count = rc_presubtract_src_reg_count( 1581c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->RGB.Src[RC_PAIR_PRESUB_SRC].Index); 1591c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák for(i = 0; i < src_count; i++) { 1601c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák cb(data, &pair->RGB.Src[i]); 1611c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 1621c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 1631c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák else { 1641c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák cb(data, &pair->RGB.Src[src]); 1651c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 1661c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 1671c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák} 1681c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 1691c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšákvoid rc_pair_foreach_source_that_alpha_reads( 1701c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák struct rc_pair_instruction * pair, 1711c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák void * data, 1721c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák rc_pair_foreach_src_fn cb) 1731c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák{ 1741c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int i; 1751c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák const struct rc_opcode_info * info = 1761c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák rc_get_opcode_info(pair->Alpha.Opcode); 1771c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák for(i = 0; i < info->NumSrcRegs; i++) { 1781c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair_foreach_source_callback(pair, data, cb, 1791c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák GET_SWZ(pair->Alpha.Arg[i].Swizzle, 0), 1801c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->Alpha.Arg[i].Source); 1811c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 1821c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák} 1831c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 1841c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšákvoid rc_pair_foreach_source_that_rgb_reads( 1851c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák struct rc_pair_instruction * pair, 1861c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák void * data, 1871c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák rc_pair_foreach_src_fn cb) 1881c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák{ 1891c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int i; 1901c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák const struct rc_opcode_info * info = 1911c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák rc_get_opcode_info(pair->RGB.Opcode); 1921c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák for(i = 0; i < info->NumSrcRegs; i++) { 1931c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int chan; 1941c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int swz = RC_SWIZZLE_UNUSED; 1951c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák /* Find a swizzle that is either X,Y,Z,or W. We assume here 1961c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * that if one channel swizzles X,Y, or Z, then none of the 1971c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák * other channels swizzle W, and vice-versa. */ 1981c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák for(chan = 0; chan < 4; chan++) { 1991c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák swz = GET_SWZ(pair->RGB.Arg[i].Swizzle, chan); 2001c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if(swz == RC_SWIZZLE_X || swz == RC_SWIZZLE_Y 2011c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák || swz == RC_SWIZZLE_Z || swz == RC_SWIZZLE_W) 2021c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák continue; 2031c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 2041c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair_foreach_source_callback(pair, data, cb, 2051c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák swz, 2061c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák pair->RGB.Arg[i].Source); 2071c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 2081c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák} 2091c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 2101c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšákstruct rc_pair_instruction_source * rc_pair_get_src( 2111c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák struct rc_pair_instruction * pair_inst, 2121c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák struct rc_pair_instruction_arg * arg) 2131c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák{ 2141c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák unsigned int type; 2151c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 2161c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák type = rc_source_type_swz(arg->Swizzle); 2171c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 2181c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (type & RC_SOURCE_RGB) { 2191c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák return &pair_inst->RGB.Src[arg->Source]; 2201c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } else if (type & RC_SOURCE_ALPHA) { 2211c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák return &pair_inst->Alpha.Src[arg->Source]; 2221c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } else { 2231c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák return NULL; 2241c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 2251c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák} 2261c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák 2271c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšákint rc_pair_get_src_index( 2281c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák struct rc_pair_instruction * pair_inst, 2291c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák struct rc_pair_instruction_source * src) 2301c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák{ 2311c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák int i; 2321c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák for (i = 0; i < 3; i++) { 2331c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák if (&pair_inst->RGB.Src[i] == src 2341c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák || &pair_inst->Alpha.Src[i] == src) { 2351c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák return i; 2361c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 2371c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák } 2381c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák return -1; 2391c2c4ddbd1e97bfd13430521e5c09cb5ce8e36e6Marek Olšák} 240