Hash :
8d12b278
Author :
Date :
2024-03-15T15:39:39
Make separated anonymous in/out structs work better
Fixes failing case for other backends than GLSL output:
VS:
out struct { .. } a, b;
FS:
in struct { .. } a, b
Make the ANGLE VS-FS interface matching work by using the anonymous name
as the variable structOrBlock name.
Bug: angleproject:42267047
Change-Id: If8107387c02b5520134857fb210a27a8f92a2db0
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5372727
Commit-Queue: Kimmo Kinnunen <kkinnunen@apple.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Auto-Submit: Kimmo Kinnunen <kkinnunen@apple.com>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320
//
// Copyright 2002 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// CollectVariables.cpp: Collect lists of shader interface variables based on the AST.
#include "compiler/translator/CollectVariables.h"
#include "angle_gl.h"
#include "common/utilities.h"
#include "compiler/translator/HashNames.h"
#include "compiler/translator/SymbolTable.h"
#include "compiler/translator/tree_util/IntermTraverse.h"
#include "compiler/translator/util.h"
namespace sh
{
namespace
{
BlockLayoutType GetBlockLayoutType(TLayoutBlockStorage blockStorage)
{
switch (blockStorage)
{
case EbsPacked:
return BLOCKLAYOUT_PACKED;
case EbsShared:
return BLOCKLAYOUT_SHARED;
case EbsStd140:
return BLOCKLAYOUT_STD140;
case EbsStd430:
return BLOCKLAYOUT_STD430;
default:
UNREACHABLE();
return BLOCKLAYOUT_SHARED;
}
}
BlockType GetBlockType(TQualifier qualifier)
{
switch (qualifier)
{
case EvqUniform:
return BlockType::kBlockUniform;
case EvqBuffer:
return BlockType::kBlockBuffer;
case EvqPixelLocalEXT:
return BlockType::kPixelLocalExt;
default:
UNREACHABLE();
return BlockType::kBlockUniform;
}
}
template <class VarT>
VarT *FindVariable(const ImmutableString &name, std::vector<VarT> *infoList)
{
// TODO(zmo): optimize this function.
for (size_t ii = 0; ii < infoList->size(); ++ii)
{
if (name == (*infoList)[ii].name)
return &((*infoList)[ii]);
}
return nullptr;
}
void MarkActive(ShaderVariable *variable)
{
if (!variable->active)
{
if (variable->isStruct())
{
// Conservatively assume all fields are statically used as well.
for (auto &field : variable->fields)
{
MarkActive(&field);
}
}
variable->staticUse = true;
variable->active = true;
}
}
ShaderVariable *FindVariableInInterfaceBlock(const ImmutableString &name,
const TInterfaceBlock *interfaceBlock,
std::vector<InterfaceBlock> *infoList)
{
ASSERT(interfaceBlock);
InterfaceBlock *namedBlock = FindVariable(interfaceBlock->name(), infoList);
ASSERT(namedBlock);
// Set static use on the parent interface block here
namedBlock->staticUse = true;
namedBlock->active = true;
return FindVariable(name, &namedBlock->fields);
}
ShaderVariable *FindShaderIOBlockVariable(const ImmutableString &blockName,
std::vector<ShaderVariable> *infoList)
{
for (size_t index = 0; index < infoList->size(); ++index)
{
if (blockName == (*infoList)[index].structOrBlockName)
return &(*infoList)[index];
}
return nullptr;
}
// Traverses the intermediate tree to collect all attributes, uniforms, varyings, fragment outputs,
// shared data and interface blocks.
class CollectVariablesTraverser : public TIntermTraverser
{
public:
CollectVariablesTraverser(std::vector<ShaderVariable> *attribs,
std::vector<ShaderVariable> *outputVariables,
std::vector<ShaderVariable> *uniforms,
std::vector<ShaderVariable> *inputVaryings,
std::vector<ShaderVariable> *outputVaryings,
std::vector<ShaderVariable> *sharedVariables,
std::vector<InterfaceBlock> *uniformBlocks,
std::vector<InterfaceBlock> *shaderStorageBlocks,
ShHashFunction64 hashFunction,
TSymbolTable *symbolTable,
GLenum shaderType,
const TExtensionBehavior &extensionBehavior,
const ShBuiltInResources &resources,
int tessControlShaderOutputVertices);
bool visitGlobalQualifierDeclaration(Visit visit,
TIntermGlobalQualifierDeclaration *node) override;
void visitSymbol(TIntermSymbol *symbol) override;
bool visitDeclaration(Visit, TIntermDeclaration *node) override;
bool visitBinary(Visit visit, TIntermBinary *binaryNode) override;
private:
std::string getMappedName(const TSymbol *symbol) const;
void setFieldOrVariableProperties(const TType &type,
bool staticUse,
bool isShaderIOBlock,
bool isPatch,
ShaderVariable *variableOut) const;
void setFieldProperties(const TType &type,
const ImmutableString &name,
bool staticUse,
bool isShaderIOBlock,
bool isPatch,
SymbolType symbolType,
ShaderVariable *variableOut) const;
void setCommonVariableProperties(const TType &type,
const TVariable &variable,
ShaderVariable *variableOut) const;
ShaderVariable recordAttribute(const TIntermSymbol &variable) const;
ShaderVariable recordOutputVariable(const TIntermSymbol &variable) const;
ShaderVariable recordVarying(const TIntermSymbol &variable) const;
void recordInterfaceBlock(const char *instanceName,
const TType &interfaceBlockType,
InterfaceBlock *interfaceBlock) const;
ShaderVariable recordUniform(const TIntermSymbol &variable) const;
void setBuiltInInfoFromSymbol(const TVariable &variable, ShaderVariable *info);
void recordBuiltInVaryingUsed(const TVariable &variable,
bool *addedFlag,
std::vector<ShaderVariable> *varyings);
void recordBuiltInFragmentOutputUsed(const TVariable &variable, bool *addedFlag);
void recordBuiltInAttributeUsed(const TVariable &variable, bool *addedFlag);
InterfaceBlock *findNamedInterfaceBlock(const ImmutableString &name) const;
std::vector<ShaderVariable> *mAttribs;
std::vector<ShaderVariable> *mOutputVariables;
std::vector<ShaderVariable> *mUniforms;
std::vector<ShaderVariable> *mInputVaryings;
std::vector<ShaderVariable> *mOutputVaryings;
std::vector<ShaderVariable> *mSharedVariables;
std::vector<InterfaceBlock> *mUniformBlocks;
std::vector<InterfaceBlock> *mShaderStorageBlocks;
std::map<std::string, ShaderVariable *> mInterfaceBlockFields;
// Shader uniforms
bool mDepthRangeAdded;
bool mNumSamplesAdded;
// Compute Shader builtins
bool mNumWorkGroupsAdded;
bool mWorkGroupIDAdded;
bool mLocalInvocationIDAdded;
bool mGlobalInvocationIDAdded;
bool mLocalInvocationIndexAdded;
// Vertex Shader builtins
bool mInstanceIDAdded;
bool mVertexIDAdded;
bool mPointSizeAdded;
bool mDrawIDAdded;
// Vertex Shader and Geometry Shader builtins
bool mPositionAdded;
bool mClipDistanceAdded;
bool mCullDistanceAdded;
// Fragment Shader builtins
bool mPointCoordAdded;
bool mFrontFacingAdded;
bool mHelperInvocationAdded;
bool mFragCoordAdded;
bool mLastFragDataAdded;
bool mLastFragColorAdded;
bool mFragColorAdded;
bool mFragDataAdded;
bool mFragDepthAdded;
bool mSecondaryFragColorEXTAdded;
bool mSecondaryFragDataEXTAdded;
bool mSampleIDAdded;
bool mSamplePositionAdded;
bool mSampleMaskAdded;
bool mSampleMaskInAdded;
// Geometry and Tessellation Shader builtins
bool mPerVertexInAdded;
bool mPerVertexOutAdded;
// Geometry Shader builtins
bool mPrimitiveIDInAdded;
bool mInvocationIDAdded;
// Geometry Shader and Fragment Shader builtins
bool mPrimitiveIDAdded;
bool mLayerAdded;
// Shared memory variables
bool mSharedVariableAdded;
// Tessellation Shader builtins
bool mPatchVerticesInAdded;
bool mTessLevelOuterAdded;
bool mTessLevelInnerAdded;
bool mBoundingBoxAdded;
bool mTessCoordAdded;
const int mTessControlShaderOutputVertices;
ShHashFunction64 mHashFunction;
GLenum mShaderType;
const TExtensionBehavior &mExtensionBehavior;
const ShBuiltInResources &mResources;
};
CollectVariablesTraverser::CollectVariablesTraverser(
std::vector<sh::ShaderVariable> *attribs,
std::vector<sh::ShaderVariable> *outputVariables,
std::vector<sh::ShaderVariable> *uniforms,
std::vector<sh::ShaderVariable> *inputVaryings,
std::vector<sh::ShaderVariable> *outputVaryings,
std::vector<sh::ShaderVariable> *sharedVariables,
std::vector<sh::InterfaceBlock> *uniformBlocks,
std::vector<sh::InterfaceBlock> *shaderStorageBlocks,
ShHashFunction64 hashFunction,
TSymbolTable *symbolTable,
GLenum shaderType,
const TExtensionBehavior &extensionBehavior,
const ShBuiltInResources &resources,
int tessControlShaderOutputVertices)
: TIntermTraverser(true, false, false, symbolTable),
mAttribs(attribs),
mOutputVariables(outputVariables),
mUniforms(uniforms),
mInputVaryings(inputVaryings),
mOutputVaryings(outputVaryings),
mSharedVariables(sharedVariables),
mUniformBlocks(uniformBlocks),
mShaderStorageBlocks(shaderStorageBlocks),
mDepthRangeAdded(false),
mNumSamplesAdded(false),
mNumWorkGroupsAdded(false),
mWorkGroupIDAdded(false),
mLocalInvocationIDAdded(false),
mGlobalInvocationIDAdded(false),
mLocalInvocationIndexAdded(false),
mInstanceIDAdded(false),
mVertexIDAdded(false),
mPointSizeAdded(false),
mDrawIDAdded(false),
mPositionAdded(false),
mClipDistanceAdded(false),
mCullDistanceAdded(false),
mPointCoordAdded(false),
mFrontFacingAdded(false),
mHelperInvocationAdded(false),
mFragCoordAdded(false),
mLastFragDataAdded(false),
mLastFragColorAdded(false),
mFragColorAdded(false),
mFragDataAdded(false),
mFragDepthAdded(false),
mSecondaryFragColorEXTAdded(false),
mSecondaryFragDataEXTAdded(false),
mSampleIDAdded(false),
mSamplePositionAdded(false),
mSampleMaskAdded(false),
mSampleMaskInAdded(false),
mPerVertexInAdded(false),
mPerVertexOutAdded(false),
mPrimitiveIDInAdded(false),
mInvocationIDAdded(false),
mPrimitiveIDAdded(false),
mLayerAdded(false),
mSharedVariableAdded(false),
mPatchVerticesInAdded(false),
mTessLevelOuterAdded(false),
mTessLevelInnerAdded(false),
mBoundingBoxAdded(false),
mTessCoordAdded(false),
mTessControlShaderOutputVertices(tessControlShaderOutputVertices),
mHashFunction(hashFunction),
mShaderType(shaderType),
mExtensionBehavior(extensionBehavior),
mResources(resources)
{}
std::string CollectVariablesTraverser::getMappedName(const TSymbol *symbol) const
{
return HashName(symbol, mHashFunction, nullptr).data();
}
void CollectVariablesTraverser::setBuiltInInfoFromSymbol(const TVariable &variable,
ShaderVariable *info)
{
const TType &type = variable.getType();
info->name = variable.name().data();
info->mappedName = variable.name().data();
bool isShaderIOBlock =
IsShaderIoBlock(type.getQualifier()) && type.getInterfaceBlock() != nullptr;
bool isPatch = type.getQualifier() == EvqTessLevelInner ||
type.getQualifier() == EvqTessLevelOuter ||
type.getQualifier() == EvqBoundingBox;
setFieldOrVariableProperties(type, true, isShaderIOBlock, isPatch, info);
}
void CollectVariablesTraverser::recordBuiltInVaryingUsed(const TVariable &variable,
bool *addedFlag,
std::vector<ShaderVariable> *varyings)
{
ASSERT(varyings);
if (!(*addedFlag))
{
ShaderVariable info;
setBuiltInInfoFromSymbol(variable, &info);
info.active = true;
info.isInvariant = mSymbolTable->isVaryingInvariant(variable);
varyings->push_back(info);
(*addedFlag) = true;
}
}
void CollectVariablesTraverser::recordBuiltInFragmentOutputUsed(const TVariable &variable,
bool *addedFlag)
{
if (!(*addedFlag))
{
ShaderVariable info;
setBuiltInInfoFromSymbol(variable, &info);
info.active = true;
mOutputVariables->push_back(info);
(*addedFlag) = true;
}
}
void CollectVariablesTraverser::recordBuiltInAttributeUsed(const TVariable &variable,
bool *addedFlag)
{
if (!(*addedFlag))
{
ShaderVariable info;
setBuiltInInfoFromSymbol(variable, &info);
info.active = true;
info.location = -1;
mAttribs->push_back(info);
(*addedFlag) = true;
}
}
bool CollectVariablesTraverser::visitGlobalQualifierDeclaration(
Visit visit,
TIntermGlobalQualifierDeclaration *node)
{
// We should not mark variables as active just based on an invariant/precise declaration, so we
// don't traverse the symbols declared invariant.
return false;
}
// We want to check whether a uniform/varying is active because we need to skip updating inactive
// ones. We also only count the active ones in packing computing. Also, gl_FragCoord, gl_PointCoord,
// and gl_FrontFacing count toward varying counting if they are active in a fragment shader.
void CollectVariablesTraverser::visitSymbol(TIntermSymbol *symbol)
{
ASSERT(symbol != nullptr);
if (symbol->variable().symbolType() == SymbolType::AngleInternal ||
symbol->variable().symbolType() == SymbolType::Empty)
{
// Internal variables or nameless variables are not collected.
return;
}
ShaderVariable *var = nullptr;
const ImmutableString &symbolName = symbol->getName();
// Check the qualifier from the variable, not from the symbol node. The node may have a
// different qualifier if it's the result of a folded ternary node.
TQualifier qualifier = symbol->variable().getType().getQualifier();
const TInterfaceBlock *interfaceBlock = symbol->getType().getInterfaceBlock();
if (IsVaryingIn(qualifier))
{
if (interfaceBlock)
{
var = FindShaderIOBlockVariable(interfaceBlock->name(), mInputVaryings);
}
else
{
var = FindVariable(symbolName, mInputVaryings);
}
}
else if (IsVaryingOut(qualifier))
{
if (interfaceBlock)
{
var = FindShaderIOBlockVariable(interfaceBlock->name(), mOutputVaryings);
}
else
{
var = FindVariable(symbolName, mOutputVaryings);
}
}
else if (symbol->getType().getBasicType() == EbtInterfaceBlock)
{
UNREACHABLE();
}
else if (symbolName == "gl_DepthRange")
{
ASSERT(qualifier == EvqUniform);
if (!mDepthRangeAdded)
{
ShaderVariable info;
const char kName[] = "gl_DepthRange";
info.name = kName;
info.mappedName = kName;
info.type = GL_NONE;
info.precision = GL_NONE;
info.staticUse = true;
info.active = true;
ShaderVariable nearInfo(GL_FLOAT);
const char kNearName[] = "near";
nearInfo.name = kNearName;
nearInfo.mappedName = kNearName;
nearInfo.precision = GL_HIGH_FLOAT;
nearInfo.staticUse = true;
nearInfo.active = true;
ShaderVariable farInfo(GL_FLOAT);
const char kFarName[] = "far";
farInfo.name = kFarName;
farInfo.mappedName = kFarName;
farInfo.precision = GL_HIGH_FLOAT;
farInfo.staticUse = true;
farInfo.active = true;
ShaderVariable diffInfo(GL_FLOAT);
const char kDiffName[] = "diff";
diffInfo.name = kDiffName;
diffInfo.mappedName = kDiffName;
diffInfo.precision = GL_HIGH_FLOAT;
diffInfo.staticUse = true;
diffInfo.active = true;
info.fields.push_back(nearInfo);
info.fields.push_back(farInfo);
info.fields.push_back(diffInfo);
mUniforms->push_back(info);
mDepthRangeAdded = true;
}
}
else if (symbolName == "gl_NumSamples")
{
ASSERT(qualifier == EvqUniform);
if (!mNumSamplesAdded)
{
ShaderVariable info;
const char kName[] = "gl_NumSamples";
info.name = kName;
info.mappedName = kName;
info.type = GL_INT;
info.precision = GL_LOW_INT;
info.staticUse = true;
info.active = true;
mUniforms->push_back(info);
mNumSamplesAdded = true;
}
}
else
{
switch (qualifier)
{
case EvqAttribute:
case EvqVertexIn:
var = FindVariable(symbolName, mAttribs);
break;
case EvqFragmentOut:
case EvqFragmentInOut:
var = FindVariable(symbolName, mOutputVariables);
var->isFragmentInOut = qualifier == EvqFragmentInOut;
break;
case EvqUniform:
{
if (interfaceBlock)
{
var = FindVariableInInterfaceBlock(symbolName, interfaceBlock, mUniformBlocks);
}
else
{
var = FindVariable(symbolName, mUniforms);
}
// It's an internal error to reference an undefined user uniform
ASSERT(!gl::IsBuiltInName(symbolName.data()) || var);
}
break;
case EvqBuffer:
{
var =
FindVariableInInterfaceBlock(symbolName, interfaceBlock, mShaderStorageBlocks);
}
break;
case EvqFragCoord:
recordBuiltInVaryingUsed(symbol->variable(), &mFragCoordAdded, mInputVaryings);
return;
case EvqFrontFacing:
recordBuiltInVaryingUsed(symbol->variable(), &mFrontFacingAdded, mInputVaryings);
return;
case EvqHelperInvocation:
recordBuiltInVaryingUsed(symbol->variable(), &mHelperInvocationAdded,
mInputVaryings);
return;
case EvqPointCoord:
recordBuiltInVaryingUsed(symbol->variable(), &mPointCoordAdded, mInputVaryings);
return;
case EvqNumWorkGroups:
recordBuiltInAttributeUsed(symbol->variable(), &mNumWorkGroupsAdded);
return;
case EvqWorkGroupID:
recordBuiltInAttributeUsed(symbol->variable(), &mWorkGroupIDAdded);
return;
case EvqLocalInvocationID:
recordBuiltInAttributeUsed(symbol->variable(), &mLocalInvocationIDAdded);
return;
case EvqGlobalInvocationID:
recordBuiltInAttributeUsed(symbol->variable(), &mGlobalInvocationIDAdded);
return;
case EvqLocalInvocationIndex:
recordBuiltInAttributeUsed(symbol->variable(), &mLocalInvocationIndexAdded);
return;
case EvqInstanceID:
// Whenever the initializeBuiltinsForInstancedMultiview option is set,
// gl_InstanceID is added inside expressions to initialize ViewID_OVR and
// InstanceID. Note that gl_InstanceID is not added to the symbol table for ESSL1
// shaders.
recordBuiltInAttributeUsed(symbol->variable(), &mInstanceIDAdded);
return;
case EvqVertexID:
recordBuiltInAttributeUsed(symbol->variable(), &mVertexIDAdded);
return;
case EvqPosition:
recordBuiltInVaryingUsed(symbol->variable(), &mPositionAdded, mOutputVaryings);
return;
case EvqPointSize:
recordBuiltInVaryingUsed(symbol->variable(), &mPointSizeAdded, mOutputVaryings);
return;
case EvqDrawID:
recordBuiltInAttributeUsed(symbol->variable(), &mDrawIDAdded);
return;
case EvqLastFragData:
recordBuiltInVaryingUsed(symbol->variable(), &mLastFragDataAdded, mInputVaryings);
return;
case EvqLastFragColor:
recordBuiltInVaryingUsed(symbol->variable(), &mLastFragColorAdded, mInputVaryings);
return;
case EvqFragColor:
recordBuiltInFragmentOutputUsed(symbol->variable(), &mFragColorAdded);
return;
case EvqFragData:
recordBuiltInFragmentOutputUsed(symbol->variable(), &mFragDataAdded);
return;
case EvqFragDepth:
recordBuiltInFragmentOutputUsed(symbol->variable(), &mFragDepthAdded);
return;
case EvqSecondaryFragColorEXT:
recordBuiltInFragmentOutputUsed(symbol->variable(), &mSecondaryFragColorEXTAdded);
return;
case EvqSecondaryFragDataEXT:
recordBuiltInFragmentOutputUsed(symbol->variable(), &mSecondaryFragDataEXTAdded);
return;
case EvqInvocationID:
recordBuiltInVaryingUsed(symbol->variable(), &mInvocationIDAdded, mInputVaryings);
break;
case EvqPrimitiveIDIn:
recordBuiltInVaryingUsed(symbol->variable(), &mPrimitiveIDInAdded, mInputVaryings);
break;
case EvqPrimitiveID:
if (mShaderType == GL_GEOMETRY_SHADER_EXT)
{
recordBuiltInVaryingUsed(symbol->variable(), &mPrimitiveIDAdded,
mOutputVaryings);
}
else
{
ASSERT(mShaderType == GL_FRAGMENT_SHADER ||
mShaderType == GL_TESS_CONTROL_SHADER ||
mShaderType == GL_TESS_EVALUATION_SHADER);
recordBuiltInVaryingUsed(symbol->variable(), &mPrimitiveIDAdded,
mInputVaryings);
}
break;
case EvqLayerOut:
if (mShaderType == GL_GEOMETRY_SHADER_EXT)
{
recordBuiltInVaryingUsed(symbol->variable(), &mLayerAdded, mOutputVaryings);
}
else
{
ASSERT(mShaderType == GL_VERTEX_SHADER &&
(IsExtensionEnabled(mExtensionBehavior, TExtension::OVR_multiview2) ||
IsExtensionEnabled(mExtensionBehavior, TExtension::OVR_multiview)));
}
break;
case EvqLayerIn:
ASSERT(mShaderType == GL_FRAGMENT_SHADER);
recordBuiltInVaryingUsed(symbol->variable(), &mLayerAdded, mInputVaryings);
break;
case EvqShared:
if (mShaderType == GL_COMPUTE_SHADER)
{
recordBuiltInVaryingUsed(symbol->variable(), &mSharedVariableAdded,
mSharedVariables);
}
break;
case EvqClipDistance:
recordBuiltInVaryingUsed(
symbol->variable(), &mClipDistanceAdded,
mShaderType == GL_FRAGMENT_SHADER ? mInputVaryings : mOutputVaryings);
return;
case EvqCullDistance:
recordBuiltInVaryingUsed(
symbol->variable(), &mCullDistanceAdded,
mShaderType == GL_FRAGMENT_SHADER ? mInputVaryings : mOutputVaryings);
return;
case EvqSampleID:
recordBuiltInVaryingUsed(symbol->variable(), &mSampleIDAdded, mInputVaryings);
return;
case EvqSamplePosition:
recordBuiltInVaryingUsed(symbol->variable(), &mSamplePositionAdded, mInputVaryings);
return;
case EvqSampleMaskIn:
recordBuiltInVaryingUsed(symbol->variable(), &mSampleMaskInAdded, mInputVaryings);
return;
case EvqSampleMask:
recordBuiltInFragmentOutputUsed(symbol->variable(), &mSampleMaskAdded);
return;
case EvqPatchVerticesIn:
recordBuiltInVaryingUsed(symbol->variable(), &mPatchVerticesInAdded,
mInputVaryings);
break;
case EvqTessCoord:
recordBuiltInVaryingUsed(symbol->variable(), &mTessCoordAdded, mInputVaryings);
break;
case EvqTessLevelOuter:
if (mShaderType == GL_TESS_CONTROL_SHADER)
{
recordBuiltInVaryingUsed(symbol->variable(), &mTessLevelOuterAdded,
mOutputVaryings);
}
else
{
ASSERT(mShaderType == GL_TESS_EVALUATION_SHADER);
recordBuiltInVaryingUsed(symbol->variable(), &mTessLevelOuterAdded,
mInputVaryings);
}
break;
case EvqTessLevelInner:
if (mShaderType == GL_TESS_CONTROL_SHADER)
{
recordBuiltInVaryingUsed(symbol->variable(), &mTessLevelInnerAdded,
mOutputVaryings);
}
else
{
ASSERT(mShaderType == GL_TESS_EVALUATION_SHADER);
recordBuiltInVaryingUsed(symbol->variable(), &mTessLevelInnerAdded,
mInputVaryings);
}
break;
case EvqBoundingBox:
recordBuiltInVaryingUsed(symbol->variable(), &mBoundingBoxAdded, mOutputVaryings);
break;
default:
break;
}
}
if (var)
{
MarkActive(var);
}
}
void CollectVariablesTraverser::setFieldOrVariableProperties(const TType &type,
bool staticUse,
bool isShaderIOBlock,
bool isPatch,
ShaderVariable *variableOut) const
{
ASSERT(variableOut);
variableOut->staticUse = staticUse;
variableOut->isShaderIOBlock = isShaderIOBlock;
variableOut->isPatch = isPatch;
const TStructure *structure = type.getStruct();
const TInterfaceBlock *interfaceBlock = type.getInterfaceBlock();
if (structure)
{
// Structures use a NONE type that isn't exposed outside ANGLE.
variableOut->type = GL_NONE;
// Anonymous structs are given name from AngleInternal namespace.
if (structure->symbolType() != SymbolType::Empty &&
structure->symbolType() != SymbolType::AngleInternal)
{
variableOut->structOrBlockName = structure->name().data();
}
const TFieldList &fields = structure->fields();
for (const TField *field : fields)
{
// Regardless of the variable type (uniform, in/out etc.) its fields are always plain
// ShaderVariable objects.
ShaderVariable fieldVariable;
setFieldProperties(*field->type(), field->name(), staticUse, isShaderIOBlock, isPatch,
field->symbolType(), &fieldVariable);
variableOut->fields.push_back(fieldVariable);
}
}
else if (interfaceBlock && isShaderIOBlock)
{
const bool isPerVertex = (interfaceBlock->name() == "gl_PerVertex");
variableOut->type = GL_NONE;
if (interfaceBlock->symbolType() != SymbolType::Empty)
{
variableOut->structOrBlockName = interfaceBlock->name().data();
variableOut->mappedStructOrBlockName =
isPerVertex ? interfaceBlock->name().data()
: HashName(interfaceBlock->name(), mHashFunction, nullptr).data();
}
const TFieldList &fields = interfaceBlock->fields();
for (const TField *field : fields)
{
ShaderVariable fieldVariable;
setFieldProperties(*field->type(), field->name(), staticUse, true, isPatch,
field->symbolType(), &fieldVariable);
fieldVariable.isShaderIOBlock = true;
variableOut->fields.push_back(fieldVariable);
}
}
else
{
variableOut->type = GLVariableType(type);
variableOut->precision = GLVariablePrecision(type);
}
const TSpan<const unsigned int> &arraySizes = type.getArraySizes();
if (!arraySizes.empty())
{
variableOut->arraySizes.assign(arraySizes.begin(), arraySizes.end());
if (arraySizes[0] == 0)
{
// Tessellation Control & Evaluation shader inputs:
// Declaring an array size is optional. If no size is specified, it will be taken from
// the implementation-dependent maximum patch size (gl_MaxPatchVertices).
if (type.getQualifier() == EvqTessControlIn ||
type.getQualifier() == EvqTessEvaluationIn)
{
variableOut->arraySizes[0] = mResources.MaxPatchVertices;
}
// Tessellation Control shader outputs:
// Declaring an array size is optional. If no size is specified, it will be taken from
// output patch size declared in the shader.
if (type.getQualifier() == EvqTessControlOut)
{
ASSERT(mTessControlShaderOutputVertices > 0);
variableOut->arraySizes[0] = mTessControlShaderOutputVertices;
}
}
}
}
void CollectVariablesTraverser::setFieldProperties(const TType &type,
const ImmutableString &name,
bool staticUse,
bool isShaderIOBlock,
bool isPatch,
SymbolType symbolType,
ShaderVariable *variableOut) const
{
ASSERT(variableOut);
setFieldOrVariableProperties(type, staticUse, isShaderIOBlock, isPatch, variableOut);
variableOut->name.assign(name.data(), name.length());
variableOut->mappedName = (symbolType == SymbolType::BuiltIn)
? name.data()
: HashName(name, mHashFunction, nullptr).data();
}
void CollectVariablesTraverser::setCommonVariableProperties(const TType &type,
const TVariable &variable,
ShaderVariable *variableOut) const
{
ASSERT(variableOut);
ASSERT(type.getInterfaceBlock() == nullptr || IsShaderIoBlock(type.getQualifier()) ||
type.getQualifier() == EvqPatchIn || type.getQualifier() == EvqPatchOut);
const bool staticUse = mSymbolTable->isStaticallyUsed(variable);
const bool isShaderIOBlock = type.getInterfaceBlock() != nullptr;
const bool isPatch = type.getQualifier() == EvqPatchIn || type.getQualifier() == EvqPatchOut;
setFieldOrVariableProperties(type, staticUse, isShaderIOBlock, isPatch, variableOut);
const bool isNamed = variable.symbolType() != SymbolType::Empty;
ASSERT(isNamed || isShaderIOBlock);
if (isNamed)
{
variableOut->name.assign(variable.name().data(), variable.name().length());
variableOut->mappedName = getMappedName(&variable);
}
// For I/O blocks, additionally store the name of the block as blockName. If the variable is
// unnamed, this name will be used instead for the purpose of interface matching.
if (isShaderIOBlock)
{
const TInterfaceBlock *interfaceBlock = type.getInterfaceBlock();
ASSERT(interfaceBlock);
variableOut->structOrBlockName.assign(interfaceBlock->name().data(),
interfaceBlock->name().length());
variableOut->mappedStructOrBlockName =
HashName(interfaceBlock->name(), mHashFunction, nullptr).data();
variableOut->isShaderIOBlock = true;
}
}
ShaderVariable CollectVariablesTraverser::recordAttribute(const TIntermSymbol &variable) const
{
const TType &type = variable.getType();
ASSERT(!type.getStruct());
ShaderVariable attribute;
setCommonVariableProperties(type, variable.variable(), &attribute);
attribute.location = type.getLayoutQualifier().location;
return attribute;
}
ShaderVariable CollectVariablesTraverser::recordOutputVariable(const TIntermSymbol &variable) const
{
const TType &type = variable.getType();
ASSERT(!type.getStruct());
ShaderVariable outputVariable;
setCommonVariableProperties(type, variable.variable(), &outputVariable);
outputVariable.location = type.getLayoutQualifier().location;
outputVariable.index = type.getLayoutQualifier().index;
outputVariable.yuv = type.getLayoutQualifier().yuv;
return outputVariable;
}
ShaderVariable CollectVariablesTraverser::recordVarying(const TIntermSymbol &variable) const
{
const TType &type = variable.getType();
ShaderVariable varying;
setCommonVariableProperties(type, variable.variable(), &varying);
varying.location = type.getLayoutQualifier().location;
switch (type.getQualifier())
{
case EvqVaryingIn:
case EvqVaryingOut:
case EvqVertexOut:
case EvqSmoothOut:
case EvqFlatOut:
case EvqNoPerspectiveOut:
case EvqCentroidOut:
case EvqSampleOut:
case EvqNoPerspectiveCentroidOut:
case EvqNoPerspectiveSampleOut:
case EvqGeometryOut:
if (mSymbolTable->isVaryingInvariant(variable.variable()) || type.isInvariant())
{
varying.isInvariant = true;
}
break;
case EvqPatchIn:
case EvqPatchOut:
varying.isPatch = true;
break;
default:
break;
}
varying.interpolation = GetInterpolationType(type.getQualifier());
// Shader I/O block properties
if (type.getBasicType() == EbtInterfaceBlock)
{
bool isBlockImplicitLocation = false;
int location = type.getLayoutQualifier().location;
// when a interface has not location in layout, assign to the zero.
if (location < 0)
{
location = 0;
isBlockImplicitLocation = true;
}
const TInterfaceBlock *blockType = type.getInterfaceBlock();
ASSERT(blockType->fields().size() == varying.fields.size());
for (size_t fieldIndex = 0; fieldIndex < varying.fields.size(); ++fieldIndex)
{
const TField *blockField = blockType->fields()[fieldIndex];
ShaderVariable &fieldVariable = varying.fields[fieldIndex];
const TType &fieldType = *blockField->type();
fieldVariable.hasImplicitLocation = isBlockImplicitLocation;
fieldVariable.isPatch = varying.isPatch;
int fieldLocation = fieldType.getLayoutQualifier().location;
if (fieldLocation >= 0)
{
fieldVariable.hasImplicitLocation = false;
fieldVariable.location = fieldLocation;
location = fieldLocation;
}
else
{
fieldVariable.location = location;
location += fieldType.getLocationCount();
}
if (fieldType.getQualifier() != EvqGlobal)
{
fieldVariable.interpolation = GetFieldInterpolationType(fieldType.getQualifier());
}
}
}
return varying;
}
void CollectVariablesTraverser::recordInterfaceBlock(const char *instanceName,
const TType &interfaceBlockType,
InterfaceBlock *interfaceBlock) const
{
ASSERT(interfaceBlockType.getBasicType() == EbtInterfaceBlock);
ASSERT(interfaceBlock);
const TInterfaceBlock *blockType = interfaceBlockType.getInterfaceBlock();
ASSERT(blockType);
interfaceBlock->name = blockType->name().data();
interfaceBlock->mappedName = getMappedName(blockType);
const bool isGLInBuiltin = (instanceName != nullptr) && strncmp(instanceName, "gl_in", 5u) == 0;
if (instanceName != nullptr)
{
interfaceBlock->instanceName = instanceName;
const TSymbol *blockSymbol = nullptr;
if (isGLInBuiltin)
{
blockSymbol = mSymbolTable->getGlInVariableWithArraySize();
}
else
{
blockSymbol = mSymbolTable->findGlobal(ImmutableString(instanceName));
}
ASSERT(blockSymbol && blockSymbol->isVariable());
interfaceBlock->staticUse =
mSymbolTable->isStaticallyUsed(*static_cast<const TVariable *>(blockSymbol));
}
ASSERT(!interfaceBlockType.isArrayOfArrays()); // Disallowed by GLSL ES 3.10 section 4.3.9
interfaceBlock->arraySize =
interfaceBlockType.isArray() ? interfaceBlockType.getOutermostArraySize() : 0;
interfaceBlock->blockType = GetBlockType(interfaceBlockType.getQualifier());
if (interfaceBlock->blockType == BlockType::kBlockUniform ||
interfaceBlock->blockType == BlockType::kBlockBuffer)
{
// TODO(oetuaho): Remove setting isRowMajorLayout.
interfaceBlock->isRowMajorLayout = false;
interfaceBlock->binding = blockType->blockBinding();
interfaceBlock->layout = GetBlockLayoutType(blockType->blockStorage());
}
// Consider an SSBO readonly if all its fields are readonly. Note that ANGLE doesn't keep the
// readonly qualifier applied to the interface block itself, but rather applies it to the
// fields.
ASSERT(!interfaceBlockType.getMemoryQualifier().readonly);
bool isReadOnly = true;
// Gather field information
bool anyFieldStaticallyUsed = false;
for (const TField *field : blockType->fields())
{
const TType &fieldType = *field->type();
bool staticUse = false;
if (instanceName == nullptr)
{
// Static use of individual fields has been recorded, since they are present in the
// symbol table as variables.
const TSymbol *fieldSymbol = mSymbolTable->findGlobal(field->name());
ASSERT(fieldSymbol && fieldSymbol->isVariable());
staticUse =
mSymbolTable->isStaticallyUsed(*static_cast<const TVariable *>(fieldSymbol));
if (staticUse)
{
anyFieldStaticallyUsed = true;
}
}
ShaderVariable fieldVariable;
setFieldProperties(fieldType, field->name(), staticUse, false, false, field->symbolType(),
&fieldVariable);
fieldVariable.isRowMajorLayout =
(fieldType.getLayoutQualifier().matrixPacking == EmpRowMajor);
interfaceBlock->fields.push_back(fieldVariable);
// The SSBO is not readonly if any field is not readonly.
if (!fieldType.getMemoryQualifier().readonly)
{
isReadOnly = false;
}
}
if (anyFieldStaticallyUsed)
{
interfaceBlock->staticUse = true;
}
if (interfaceBlock->blockType == BlockType::kBlockBuffer)
{
interfaceBlock->isReadOnly = isReadOnly;
}
}
ShaderVariable CollectVariablesTraverser::recordUniform(const TIntermSymbol &variable) const
{
ShaderVariable uniform;
setCommonVariableProperties(variable.getType(), variable.variable(), &uniform);
uniform.binding = variable.getType().getLayoutQualifier().binding;
uniform.imageUnitFormat =
GetImageInternalFormatType(variable.getType().getLayoutQualifier().imageInternalFormat);
uniform.location = variable.getType().getLayoutQualifier().location;
uniform.offset = variable.getType().getLayoutQualifier().offset;
uniform.rasterOrdered = variable.getType().getLayoutQualifier().rasterOrdered;
uniform.readonly = variable.getType().getMemoryQualifier().readonly;
uniform.writeonly = variable.getType().getMemoryQualifier().writeonly;
return uniform;
}
bool CollectVariablesTraverser::visitDeclaration(Visit, TIntermDeclaration *node)
{
const TIntermSequence &sequence = *(node->getSequence());
ASSERT(!sequence.empty());
const TIntermTyped &typedNode = *(sequence.front()->getAsTyped());
TQualifier qualifier = typedNode.getQualifier();
bool isShaderVariable = qualifier == EvqAttribute || qualifier == EvqVertexIn ||
qualifier == EvqFragmentOut || qualifier == EvqFragmentInOut ||
qualifier == EvqUniform || IsVarying(qualifier);
if (typedNode.getBasicType() != EbtInterfaceBlock && !isShaderVariable)
{
return true;
}
for (TIntermNode *variableNode : sequence)
{
// The only case in which the sequence will not contain a TIntermSymbol node is
// initialization. It will contain a TInterBinary node in that case. Since attributes,
// uniforms, varyings, outputs and interface blocks cannot be initialized in a shader, we
// must have only TIntermSymbol nodes in the sequence in the cases we are interested in.
const TIntermSymbol &variable = *variableNode->getAsSymbolNode();
if (variable.variable().symbolType() == SymbolType::AngleInternal)
{
// Internal variables are not collected.
continue;
}
// SpirvTransformer::transform uses a map of ShaderVariables, it needs member variables and
// (named or unnamed) structure as ShaderVariable. at link between two shaders, validation
// between of named and unnamed, needs the same structure, its members, and members order
// except instance name.
if (typedNode.getBasicType() == EbtInterfaceBlock && !IsShaderIoBlock(qualifier) &&
qualifier != EvqPatchIn && qualifier != EvqPatchOut)
{
InterfaceBlock interfaceBlock;
bool isUnnamed = variable.variable().symbolType() == SymbolType::Empty;
const TType &type = variable.getType();
recordInterfaceBlock(isUnnamed ? nullptr : variable.getName().data(), type,
&interfaceBlock);
// all fields in interface block will be added for updating interface variables because
// the temporal structure variable will be ignored.
switch (qualifier)
{
case EvqUniform:
mUniformBlocks->push_back(interfaceBlock);
break;
case EvqBuffer:
mShaderStorageBlocks->push_back(interfaceBlock);
break;
case EvqPixelLocalEXT:
// EXT_shader_pixel_local_storage is completely self-contained within the
// shader, so we don't need to gather any info on it.
break;
default:
UNREACHABLE();
}
}
else
{
ASSERT(variable.variable().symbolType() != SymbolType::Empty ||
IsShaderIoBlock(qualifier) || qualifier == EvqPatchIn ||
qualifier == EvqPatchOut);
switch (qualifier)
{
case EvqAttribute:
case EvqVertexIn:
mAttribs->push_back(recordAttribute(variable));
break;
case EvqFragmentOut:
case EvqFragmentInOut:
mOutputVariables->push_back(recordOutputVariable(variable));
break;
case EvqUniform:
mUniforms->push_back(recordUniform(variable));
break;
default:
if (IsVaryingIn(qualifier))
{
mInputVaryings->push_back(recordVarying(variable));
}
else
{
ASSERT(IsVaryingOut(qualifier));
mOutputVaryings->push_back(recordVarying(variable));
}
break;
}
}
}
// None of the recorded variables can have initializers, so we don't need to traverse the
// declarators.
return false;
}
InterfaceBlock *CollectVariablesTraverser::findNamedInterfaceBlock(
const ImmutableString &blockName) const
{
InterfaceBlock *namedBlock = FindVariable(blockName, mUniformBlocks);
if (!namedBlock)
{
namedBlock = FindVariable(blockName, mShaderStorageBlocks);
}
return namedBlock;
}
bool CollectVariablesTraverser::visitBinary(Visit, TIntermBinary *binaryNode)
{
if (binaryNode->getOp() == EOpIndexDirectInterfaceBlock)
{
// NOTE: we do not determine static use / activeness for individual blocks of an array.
TIntermTyped *blockNode = binaryNode->getLeft()->getAsTyped();
ASSERT(blockNode);
TIntermConstantUnion *constantUnion = binaryNode->getRight()->getAsConstantUnion();
ASSERT(constantUnion);
InterfaceBlock *namedBlock = nullptr;
bool traverseIndexExpression = false;
TIntermBinary *interfaceIndexingNode = blockNode->getAsBinaryNode();
if (interfaceIndexingNode)
{
ASSERT(interfaceIndexingNode->getOp() == EOpIndexDirect ||
interfaceIndexingNode->getOp() == EOpIndexIndirect);
traverseIndexExpression = true;
blockNode = interfaceIndexingNode->getLeft();
}
const TType &interfaceNodeType = blockNode->getType();
const TInterfaceBlock *interfaceBlock = interfaceNodeType.getInterfaceBlock();
const TQualifier qualifier = interfaceNodeType.getQualifier();
// If it's a shader I/O block, look in varyings
ShaderVariable *ioBlockVar = nullptr;
if (qualifier == EvqPerVertexIn)
{
TIntermSymbol *symbolNode = blockNode->getAsSymbolNode();
ASSERT(symbolNode);
recordBuiltInVaryingUsed(symbolNode->variable(), &mPerVertexInAdded, mInputVaryings);
ioBlockVar = FindShaderIOBlockVariable(interfaceBlock->name(), mInputVaryings);
}
else if (IsVaryingIn(qualifier))
{
ioBlockVar = FindShaderIOBlockVariable(interfaceBlock->name(), mInputVaryings);
}
else if (qualifier == EvqPerVertexOut)
{
TIntermSymbol *symbolNode = blockNode->getAsSymbolNode();
ASSERT(symbolNode);
recordBuiltInVaryingUsed(symbolNode->variable(), &mPerVertexOutAdded, mOutputVaryings);
ioBlockVar = FindShaderIOBlockVariable(interfaceBlock->name(), mOutputVaryings);
}
else if (IsVaryingOut(qualifier))
{
ioBlockVar = FindShaderIOBlockVariable(interfaceBlock->name(), mOutputVaryings);
}
if (ioBlockVar)
{
MarkActive(ioBlockVar);
}
else if (qualifier != EvqPixelLocalEXT)
{
if (!namedBlock)
{
namedBlock = findNamedInterfaceBlock(interfaceBlock->name());
}
ASSERT(namedBlock);
ASSERT(namedBlock->staticUse);
namedBlock->active = true;
unsigned int fieldIndex = static_cast<unsigned int>(constantUnion->getIConst(0));
ASSERT(fieldIndex < namedBlock->fields.size());
// TODO(oetuaho): Would be nicer to record static use of fields of named interface
// blocks more accurately at parse time - now we only mark the fields statically used if
// they are active. http://anglebug.com/42261150 We need to mark this field and all of
// its sub-fields, as static/active
MarkActive(&namedBlock->fields[fieldIndex]);
}
if (traverseIndexExpression)
{
ASSERT(interfaceIndexingNode);
interfaceIndexingNode->getRight()->traverse(this);
}
return false;
}
return true;
}
} // anonymous namespace
void CollectVariables(TIntermBlock *root,
std::vector<ShaderVariable> *attributes,
std::vector<ShaderVariable> *outputVariables,
std::vector<ShaderVariable> *uniforms,
std::vector<ShaderVariable> *inputVaryings,
std::vector<ShaderVariable> *outputVaryings,
std::vector<ShaderVariable> *sharedVariables,
std::vector<InterfaceBlock> *uniformBlocks,
std::vector<InterfaceBlock> *shaderStorageBlocks,
ShHashFunction64 hashFunction,
TSymbolTable *symbolTable,
GLenum shaderType,
const TExtensionBehavior &extensionBehavior,
const ShBuiltInResources &resources,
int tessControlShaderOutputVertices)
{
CollectVariablesTraverser collect(
attributes, outputVariables, uniforms, inputVaryings, outputVaryings, sharedVariables,
uniformBlocks, shaderStorageBlocks, hashFunction, symbolTable, shaderType,
extensionBehavior, resources, tessControlShaderOutputVertices);
root->traverse(&collect);
}
} // namespace sh