tgsi_scan.c revision c8c2fc9a7a029bb61520973e55fb3cec18f13e20
12a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)/************************************************************************** 22a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * 32a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. 42a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * All Rights Reserved. 52a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * Copyright 2008 VMware, Inc. All rights Reserved. 62a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * 72a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * Permission is hereby granted, free of charge, to any person obtaining a 82a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * copy of this software and associated documentation files (the 92a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * "Software"), to deal in the Software without restriction, including 102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * without limitation the rights to use, copy, modify, merge, publish, 112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * distribute, sub license, and/or sell copies of the Software, and to 122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * permit persons to whom the Software is furnished to do so, subject to 13868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) * the following conditions: 14c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * 152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * The above copyright notice and this permission notice (including the 162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * next paragraph) shall be included in all copies or substantial portions 172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * of the Software. 182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * 192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * 272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) **************************************************************************/ 28c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 29c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)/** 30c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * TGSI program scan utility. 31c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * Used to determine which registers and instructions are used by a shader. 32c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * 33868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) * Authors: Brian Paul 34868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) */ 35868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 36868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 37868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "util/u_math.h" 38868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "tgsi/tgsi_parse.h" 39868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "tgsi/tgsi_util.h" 40868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "tgsi/tgsi_scan.h" 41868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 42868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 43868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 44868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 45868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)/** 46868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) * Scan the given TGSI shader to collect information such as number of 47868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) * registers used, special instructions used, etc. 482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * \return info the result of the scan 49868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) */ 502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void 51c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdochtgsi_scan_shader(const struct tgsi_token *tokens, 52c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch struct tgsi_shader_info *info) 53c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch{ 54c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch uint procType, i; 55c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch struct tgsi_parse_context parse; 56a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) 57a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) memset(info, 0, sizeof(*info)); 58a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) for (i = 0; i < TGSI_FILE_COUNT; i++) 59a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) info->file_max[i] = -1; 60a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) 61a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) /** 62a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) ** Setup to begin parsing input shader 63a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) **/ 64a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) if (tgsi_parse_init( &parse, tokens ) != TGSI_PARSE_OK) { 65a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) debug_printf("tgsi_parse_init() failed in tgsi_scan_shader()!\n"); 66a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) return; 67a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) } 68a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) procType = parse.FullHeader.Processor.Processor; 69a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) assert(procType == TGSI_PROCESSOR_FRAGMENT || 70a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) procType == TGSI_PROCESSOR_VERTEX || 71a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) procType == TGSI_PROCESSOR_GEOMETRY); 72a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) 73a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) 74a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) /** 75a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) ** Loop over incoming program tokens/instructions 76a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) */ 77a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) while( !tgsi_parse_end_of_tokens( &parse ) ) { 785d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->num_tokens++; 802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) tgsi_parse_token( &parse ); 822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) switch( parse.FullToken.Token.Type ) { 842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) case TGSI_TOKEN_TYPE_INSTRUCTION: 852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) { 862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const struct tgsi_full_instruction *fullinst 872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) = &parse.FullToken.FullInstruction; 882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) uint i; 892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) assert(fullinst->Instruction.Opcode < TGSI_OPCODE_LAST); 912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->opcode_count[fullinst->Instruction.Opcode]++; 922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) for (i = 0; i < fullinst->Instruction.NumSrcRegs; i++) { 942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const struct tgsi_full_src_register *src = 952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) &fullinst->Src[i]; 962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int ind = src->Register.Index; 972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /* Mark which inputs are effectively used */ 992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (src->Register.File == TGSI_FILE_INPUT) { 1002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) unsigned usage_mask; 1012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) usage_mask = tgsi_util_get_inst_usage_mask(fullinst, i); 1022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (src->Register.Indirect) { 1032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) for (ind = 0; ind < info->num_inputs; ++ind) { 1042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->input_usage_mask[ind] |= usage_mask; 1052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } else { 1072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) assert(ind >= 0); 1082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) assert(ind < PIPE_MAX_SHADER_INPUTS); 1092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->input_usage_mask[ind] |= usage_mask; 1102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (procType == TGSI_PROCESSOR_FRAGMENT && 113c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch src->Register.File == TGSI_FILE_INPUT && 114868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) info->reads_position && 115868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) src->Register.Index == 0 && 116868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) (src->Register.SwizzleX == TGSI_SWIZZLE_Z || 117868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) src->Register.SwizzleY == TGSI_SWIZZLE_Z || 1182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) src->Register.SwizzleZ == TGSI_SWIZZLE_Z || 1192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) src->Register.SwizzleW == TGSI_SWIZZLE_Z)) { 1202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->reads_z = TRUE; 1212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 122c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch } 1232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 124c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch /* check for indirect register reads */ 125a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) if (src->Register.Indirect) { 1262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->indirect_files |= (1 << src->Register.File); 127a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) } 1282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 129c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 130c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch /* check for indirect register writes */ 131a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) for (i = 0; i < fullinst->Instruction.NumDstRegs; i++) { 132a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) const struct tgsi_full_dst_register *dst = &fullinst->Dst[i]; 1332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (dst->Register.Indirect) { 1342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->indirect_files |= (1 << dst->Register.File); 1352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 136868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) } 1372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->num_instructions++; 1392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) break; 141868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 142868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) case TGSI_TOKEN_TYPE_DECLARATION: 1432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) { 1442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const struct tgsi_full_declaration *fulldecl 1452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) = &parse.FullToken.FullDeclaration; 1462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const uint file = fulldecl->Declaration.File; 147c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch uint reg; 148c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch for (reg = fulldecl->Range.First; 149c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch reg <= fulldecl->Range.Last; 150c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch reg++) { 151c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 152c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch /* only first 32 regs will appear in this bitfield */ 153c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch info->file_mask[file] |= (1 << reg); 154c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch info->file_count[file]++; 155a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) info->file_max[file] = MAX2(info->file_max[file], (int)reg); 1562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 157a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) if (file == TGSI_FILE_INPUT) { 1582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->input_semantic_name[reg] = (ubyte)fulldecl->Semantic.Name; 1592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->input_semantic_index[reg] = (ubyte)fulldecl->Semantic.Index; 1602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->input_interpolate[reg] = (ubyte)fulldecl->Declaration.Interpolate; 161a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) info->input_centroid[reg] = (ubyte)fulldecl->Declaration.Centroid; 162a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) info->input_cylindrical_wrap[reg] = (ubyte)fulldecl->Declaration.CylindricalWrap; 1632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->num_inputs++; 164a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) 1652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (procType == TGSI_PROCESSOR_FRAGMENT && 1662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) fulldecl->Semantic.Name == TGSI_SEMANTIC_POSITION) 1672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->reads_position = TRUE; 1682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) else if (file == TGSI_FILE_SYSTEM_VALUE) { 1702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) unsigned index = fulldecl->Range.First; 1712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) unsigned semName = fulldecl->Semantic.Name; 1722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->system_value_semantic_name[index] = semName; 1742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->num_system_values = MAX2(info->num_system_values, 1752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) index + 1); 1762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /* 1782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->system_value_semantic_name[info->num_system_values++] = 1792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) fulldecl->Semantic.Name; 1802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) */ 181868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 182868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (fulldecl->Semantic.Name == TGSI_SEMANTIC_INSTANCEID) { 183868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) info->uses_instanceid = TRUE; 184868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) } 185868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) } 1862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) else if (file == TGSI_FILE_OUTPUT) { 1872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->output_semantic_name[reg] = (ubyte)fulldecl->Semantic.Name; 1882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->output_semantic_index[reg] = (ubyte)fulldecl->Semantic.Index; 1892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->num_outputs++; 1902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /* extra info for special outputs */ 192a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) if (procType == TGSI_PROCESSOR_FRAGMENT && 193a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) fulldecl->Semantic.Name == TGSI_SEMANTIC_POSITION) 1942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->writes_z = TRUE; 195a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) if (procType == TGSI_PROCESSOR_FRAGMENT && 1962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) fulldecl->Semantic.Name == TGSI_SEMANTIC_STENCIL) 197c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch info->writes_stencil = TRUE; 198c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch if (procType == TGSI_PROCESSOR_VERTEX && 199a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) fulldecl->Semantic.Name == TGSI_SEMANTIC_EDGEFLAG) { 2002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->writes_edgeflag = TRUE; 2012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 2022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 203c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 204c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch } 205c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch } 206c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch break; 2072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2085d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) case TGSI_TOKEN_TYPE_IMMEDIATE: 2095d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) { 210 uint reg = info->immediate_count++; 211 uint file = TGSI_FILE_IMMEDIATE; 212 213 info->file_mask[file] |= (1 << reg); 214 info->file_count[file]++; 215 info->file_max[file] = MAX2(info->file_max[file], (int)reg); 216 } 217 break; 218 219 case TGSI_TOKEN_TYPE_PROPERTY: 220 { 221 const struct tgsi_full_property *fullprop 222 = &parse.FullToken.FullProperty; 223 224 info->properties[info->num_properties].name = 225 fullprop->Property.PropertyName; 226 memcpy(info->properties[info->num_properties].data, 227 fullprop->u, 8 * sizeof(unsigned));; 228 229 ++info->num_properties; 230 } 231 break; 232 233 default: 234 assert( 0 ); 235 } 236 } 237 238 info->uses_kill = (info->opcode_count[TGSI_OPCODE_KIL] || 239 info->opcode_count[TGSI_OPCODE_KILP]); 240 241 /* extract simple properties */ 242 for (i = 0; i < info->num_properties; ++i) { 243 switch (info->properties[i].name) { 244 case TGSI_PROPERTY_FS_COORD_ORIGIN: 245 info->origin_lower_left = info->properties[i].data[0]; 246 break; 247 case TGSI_PROPERTY_FS_COORD_PIXEL_CENTER: 248 info->pixel_center_integer = info->properties[i].data[0]; 249 break; 250 case TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS: 251 info->color0_writes_all_cbufs = info->properties[i].data[0]; 252 break; 253 default: 254 ; 255 } 256 } 257 258 tgsi_parse_free (&parse); 259} 260 261 262 263/** 264 * Check if the given shader is a "passthrough" shader consisting of only 265 * MOV instructions of the form: MOV OUT[n], IN[n] 266 * 267 */ 268boolean 269tgsi_is_passthrough_shader(const struct tgsi_token *tokens) 270{ 271 struct tgsi_parse_context parse; 272 273 /** 274 ** Setup to begin parsing input shader 275 **/ 276 if (tgsi_parse_init(&parse, tokens) != TGSI_PARSE_OK) { 277 debug_printf("tgsi_parse_init() failed in tgsi_is_passthrough_shader()!\n"); 278 return FALSE; 279 } 280 281 /** 282 ** Loop over incoming program tokens/instructions 283 */ 284 while (!tgsi_parse_end_of_tokens(&parse)) { 285 286 tgsi_parse_token(&parse); 287 288 switch (parse.FullToken.Token.Type) { 289 case TGSI_TOKEN_TYPE_INSTRUCTION: 290 { 291 struct tgsi_full_instruction *fullinst = 292 &parse.FullToken.FullInstruction; 293 const struct tgsi_full_src_register *src = 294 &fullinst->Src[0]; 295 const struct tgsi_full_dst_register *dst = 296 &fullinst->Dst[0]; 297 298 /* Do a whole bunch of checks for a simple move */ 299 if (fullinst->Instruction.Opcode != TGSI_OPCODE_MOV || 300 (src->Register.File != TGSI_FILE_INPUT && 301 src->Register.File != TGSI_FILE_SYSTEM_VALUE) || 302 dst->Register.File != TGSI_FILE_OUTPUT || 303 src->Register.Index != dst->Register.Index || 304 305 src->Register.Negate || 306 src->Register.Absolute || 307 308 src->Register.SwizzleX != TGSI_SWIZZLE_X || 309 src->Register.SwizzleY != TGSI_SWIZZLE_Y || 310 src->Register.SwizzleZ != TGSI_SWIZZLE_Z || 311 src->Register.SwizzleW != TGSI_SWIZZLE_W || 312 313 dst->Register.WriteMask != TGSI_WRITEMASK_XYZW) 314 { 315 tgsi_parse_free(&parse); 316 return FALSE; 317 } 318 } 319 break; 320 321 case TGSI_TOKEN_TYPE_DECLARATION: 322 /* fall-through */ 323 case TGSI_TOKEN_TYPE_IMMEDIATE: 324 /* fall-through */ 325 case TGSI_TOKEN_TYPE_PROPERTY: 326 /* fall-through */ 327 default: 328 ; /* no-op */ 329 } 330 } 331 332 tgsi_parse_free(&parse); 333 334 /* if we get here, it's a pass-through shader */ 335 return TRUE; 336} 337