1f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 2f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright (C) 2008-2009 Nicolai Haehnle. 3f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 4f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * All Rights Reserved. 5f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 6f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Permission is hereby granted, free of charge, to any person obtaining 7f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * a copy of this software and associated documentation files (the 8f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * "Software"), to deal in the Software without restriction, including 9f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * without limitation the rights to use, copy, modify, merge, publish, 10f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * distribute, sublicense, and/or sell copies of the Software, and to 11f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * permit persons to whom the Software is furnished to do so, subject to 12f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the following conditions: 13f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 14f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The above copyright notice and this permission notice (including the 15f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * next paragraph) shall be included in all copies or substantial 16f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * portions of the Software. 17f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 18f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 21f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 22f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 23f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 24f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 26f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 27f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 28f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "radeon_program_pair.h" 29f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 30f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "radeon_compiler_util.h" 31f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 32f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include <stdlib.h> 33f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 34f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 35f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Return the source slot where we installed the given register access, 36f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * or -1 if no slot was free anymore. 37f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 38f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgint rc_pair_alloc_source(struct rc_pair_instruction *pair, 39f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int rgb, unsigned int alpha, 40f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rc_register_file file, unsigned int index) 41f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 42f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int candidate = -1; 43f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int candidate_quality = -1; 44f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int alpha_used = 0; 45f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int rgb_used = 0; 46f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int i; 47f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 48f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if ((!rgb && !alpha) || file == RC_FILE_NONE) 49f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return 0; 50f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 51f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Make sure only one presubtract operation is used per instruction. */ 52f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (file == RC_FILE_PRESUB) { 53f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (rgb && pair->RGB.Src[RC_PAIR_PRESUB_SRC].Used 54f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org && index != pair->RGB.Src[RC_PAIR_PRESUB_SRC].Index) { 55f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return -1; 56f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 57f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 58f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (alpha && pair->Alpha.Src[RC_PAIR_PRESUB_SRC].Used 59f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org && index != pair->Alpha.Src[RC_PAIR_PRESUB_SRC].Index) { 60f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return -1; 61f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 62f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 63f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 64f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for(i = 0; i < 3; ++i) { 65f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int q = 0; 66f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (rgb) { 67f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (pair->RGB.Src[i].Used) { 68f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (pair->RGB.Src[i].File != file || 69f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->RGB.Src[i].Index != index) { 70f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rgb_used++; 71f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org continue; 72f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 73f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org q++; 74f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 75f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 76f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (alpha) { 77f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (pair->Alpha.Src[i].Used) { 78f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (pair->Alpha.Src[i].File != file || 79f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->Alpha.Src[i].Index != index) { 80f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org alpha_used++; 81f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org continue; 82f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 83f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org q++; 84f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 85f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 86f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (q > candidate_quality) { 87f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org candidate_quality = q; 88f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org candidate = i; 89f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 90f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 91f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 92f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (file == RC_FILE_PRESUB) { 93f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org candidate = RC_PAIR_PRESUB_SRC; 94f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } else if (candidate < 0 || (rgb && rgb_used > 2) 95f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org || (alpha && alpha_used > 2)) { 96f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return -1; 97f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 98f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 99f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* candidate >= 0 */ 100f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 101f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (rgb) { 102f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->RGB.Src[candidate].Used = 1; 103f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->RGB.Src[candidate].File = file; 104f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->RGB.Src[candidate].Index = index; 105f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (candidate == RC_PAIR_PRESUB_SRC) { 106f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* For registers with the RC_FILE_PRESUB file, 107f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the index stores the presubtract op. */ 108f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int src_regs = rc_presubtract_src_reg_count(index); 109f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for(i = 0; i < src_regs; i++) { 110f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->RGB.Src[i].Used = 1; 111f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 112f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 113f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 114f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (alpha) { 115f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->Alpha.Src[candidate].Used = 1; 116f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->Alpha.Src[candidate].File = file; 117f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->Alpha.Src[candidate].Index = index; 118f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (candidate == RC_PAIR_PRESUB_SRC) { 119f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* For registers with the RC_FILE_PRESUB file, 120f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the index stores the presubtract op. */ 121f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int src_regs = rc_presubtract_src_reg_count(index); 122f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for(i=0; i < src_regs; i++) { 123f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->Alpha.Src[i].Used = 1; 124f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 125f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 126f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 127f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 128f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return candidate; 129f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 130f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 131f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic void pair_foreach_source_callback( 132f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct rc_pair_instruction * pair, 133f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org void * data, 134f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rc_pair_foreach_src_fn cb, 135f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int swz, 136f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int src) 137f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 138f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* swz > 3 means that the swizzle is either not used, or a constant 139f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * swizzle (e.g. 0, 1, 0.5). */ 140f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if(swz > 3) 141f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 142f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 143f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if(swz == RC_SWIZZLE_W) { 144f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (src == RC_PAIR_PRESUB_SRC) { 145f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int i; 146f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int src_count = rc_presubtract_src_reg_count( 147f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->Alpha.Src[RC_PAIR_PRESUB_SRC].Index); 148f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for(i = 0; i < src_count; i++) { 149f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org cb(data, &pair->Alpha.Src[i]); 150f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 151f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } else { 152f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org cb(data, &pair->Alpha.Src[src]); 153f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 154f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } else { 155f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (src == RC_PAIR_PRESUB_SRC) { 156f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int i; 157f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int src_count = rc_presubtract_src_reg_count( 158f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->RGB.Src[RC_PAIR_PRESUB_SRC].Index); 159f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for(i = 0; i < src_count; i++) { 160f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org cb(data, &pair->RGB.Src[i]); 161f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 162f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 163f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org else { 164f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org cb(data, &pair->RGB.Src[src]); 165f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 166f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 167f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 168f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 169f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid rc_pair_foreach_source_that_alpha_reads( 170f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct rc_pair_instruction * pair, 171f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org void * data, 172f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rc_pair_foreach_src_fn cb) 173f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 174f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int i; 175f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const struct rc_opcode_info * info = 176f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rc_get_opcode_info(pair->Alpha.Opcode); 177f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for(i = 0; i < info->NumSrcRegs; i++) { 178f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair_foreach_source_callback(pair, data, cb, 179f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GET_SWZ(pair->Alpha.Arg[i].Swizzle, 0), 180f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->Alpha.Arg[i].Source); 181f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 182f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 183f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 184f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid rc_pair_foreach_source_that_rgb_reads( 185f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct rc_pair_instruction * pair, 186f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org void * data, 187f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rc_pair_foreach_src_fn cb) 188f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 189f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int i; 190f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const struct rc_opcode_info * info = 191f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org rc_get_opcode_info(pair->RGB.Opcode); 192f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for(i = 0; i < info->NumSrcRegs; i++) { 193f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int chan; 194f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int swz = RC_SWIZZLE_UNUSED; 195f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Find a swizzle that is either X,Y,Z,or W. We assume here 196f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * that if one channel swizzles X,Y, or Z, then none of the 197f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * other channels swizzle W, and vice-versa. */ 198f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for(chan = 0; chan < 4; chan++) { 199f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org swz = GET_SWZ(pair->RGB.Arg[i].Swizzle, chan); 200f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if(swz == RC_SWIZZLE_X || swz == RC_SWIZZLE_Y 201f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org || swz == RC_SWIZZLE_Z || swz == RC_SWIZZLE_W) 202f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org continue; 203f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 204f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair_foreach_source_callback(pair, data, cb, 205f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org swz, 206f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org pair->RGB.Arg[i].Source); 207f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 208f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 209f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 210f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstruct rc_pair_instruction_source * rc_pair_get_src( 211f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct rc_pair_instruction * pair_inst, 212f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct rc_pair_instruction_arg * arg) 213f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 214f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned int type; 215f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 216f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org type = rc_source_type_swz(arg->Swizzle); 217f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 218f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (type & RC_SOURCE_RGB) { 219f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return &pair_inst->RGB.Src[arg->Source]; 220f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } else if (type & RC_SOURCE_ALPHA) { 221f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return &pair_inst->Alpha.Src[arg->Source]; 222f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } else { 223f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return NULL; 224f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 225f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 226f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 227f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgint rc_pair_get_src_index( 228f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct rc_pair_instruction * pair_inst, 229f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct rc_pair_instruction_source * src) 230f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 231f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int i; 232f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < 3; i++) { 233f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (&pair_inst->RGB.Src[i] == src 234f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org || &pair_inst->Alpha.Src[i] == src) { 235f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return i; 236f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 237f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 238f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return -1; 239f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 240