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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2017-06-27 06:07:23 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2017-06-27 06:07:23 +0000 |
commit | 1bf1084f2b10c3b47fd1a588d85d21ed0eb41d0c (patch) | |
tree | 46dcd36c86e7fbc6e5df36deb463b33e9967a6f7 /Source/ThirdParty/ANGLE/src/compiler/VersionGLSL.cpp | |
parent | 32761a6cee1d0dee366b885b7b9c777e67885688 (diff) | |
download | WebKitGtk-tarball-master.tar.gz |
webkitgtk-2.16.5HEADwebkitgtk-2.16.5master
Diffstat (limited to 'Source/ThirdParty/ANGLE/src/compiler/VersionGLSL.cpp')
-rw-r--r-- | Source/ThirdParty/ANGLE/src/compiler/VersionGLSL.cpp | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/Source/ThirdParty/ANGLE/src/compiler/VersionGLSL.cpp b/Source/ThirdParty/ANGLE/src/compiler/VersionGLSL.cpp deleted file mode 100644 index 7a82bb4dc..000000000 --- a/Source/ThirdParty/ANGLE/src/compiler/VersionGLSL.cpp +++ /dev/null @@ -1,140 +0,0 @@ -// -// Copyright (c) 2002-2012 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. -// - -#include "compiler/VersionGLSL.h" - -static const int GLSL_VERSION_110 = 110; -static const int GLSL_VERSION_120 = 120; - -// We need to scan for the following: -// 1. "invariant" keyword: This can occur in both - vertex and fragment shaders -// but only at the global scope. -// 2. "gl_PointCoord" built-in variable: This can only occur in fragment shader -// but inside any scope. -// 3. Call to a matrix constructor with another matrix as argument. -// (These constructors were reserved in GLSL version 1.10.) -// 4. Arrays as "out" function parameters. -// GLSL spec section 6.1.1: "When calling a function, expressions that do -// not evaluate to l-values cannot be passed to parameters declared as -// out or inout." -// GLSL 1.1 section 5.8: "Other binary or unary expressions, -// non-dereferenced arrays, function names, swizzles with repeated fields, -// and constants cannot be l-values." -// GLSL 1.2 relaxed the restriction on arrays, section 5.8: "Variables that -// are built-in types, entire structures or arrays... are all l-values." -// -// TODO(alokp): The following two cases of invariant decalaration get lost -// during parsing - they do not get carried over to the intermediate tree. -// Handle these cases: -// 1. When a pragma is used to force all output variables to be invariant: -// - #pragma STDGL invariant(all) -// 2. When a previously decalared or built-in variable is marked invariant: -// - invariant gl_Position; -// - varying vec3 color; invariant color; -// -TVersionGLSL::TVersionGLSL(ShShaderType type) - : mShaderType(type), - mVersion(GLSL_VERSION_110) -{ -} - -void TVersionGLSL::visitSymbol(TIntermSymbol* node) -{ - if (node->getSymbol() == "gl_PointCoord") - updateVersion(GLSL_VERSION_120); -} - -void TVersionGLSL::visitConstantUnion(TIntermConstantUnion*) -{ -} - -bool TVersionGLSL::visitBinary(Visit, TIntermBinary*) -{ - return true; -} - -bool TVersionGLSL::visitUnary(Visit, TIntermUnary*) -{ - return true; -} - -bool TVersionGLSL::visitSelection(Visit, TIntermSelection*) -{ - return true; -} - -bool TVersionGLSL::visitAggregate(Visit, TIntermAggregate* node) -{ - bool visitChildren = true; - - switch (node->getOp()) { - case EOpSequence: - // We need to visit sequence children to get to global or inner scope. - visitChildren = true; - break; - case EOpDeclaration: { - const TIntermSequence& sequence = node->getSequence(); - TQualifier qualifier = sequence.front()->getAsTyped()->getQualifier(); - if ((qualifier == EvqInvariantVaryingIn) || - (qualifier == EvqInvariantVaryingOut)) { - updateVersion(GLSL_VERSION_120); - } - break; - } - case EOpParameters: { - const TIntermSequence& params = node->getSequence(); - for (TIntermSequence::const_iterator iter = params.begin(); - iter != params.end(); ++iter) - { - const TIntermTyped* param = (*iter)->getAsTyped(); - if (param->isArray()) - { - TQualifier qualifier = param->getQualifier(); - if ((qualifier == EvqOut) || (qualifier == EvqInOut)) - { - updateVersion(GLSL_VERSION_120); - break; - } - } - } - // Fully processed. No need to visit children. - visitChildren = false; - break; - } - case EOpConstructMat2: - case EOpConstructMat3: - case EOpConstructMat4: { - const TIntermSequence& sequence = node->getSequence(); - if (sequence.size() == 1) { - TIntermTyped* typed = sequence.front()->getAsTyped(); - if (typed && typed->isMatrix()) { - updateVersion(GLSL_VERSION_120); - } - } - break; - } - - default: break; - } - - return visitChildren; -} - -bool TVersionGLSL::visitLoop(Visit, TIntermLoop*) -{ - return true; -} - -bool TVersionGLSL::visitBranch(Visit, TIntermBranch*) -{ - return true; -} - -void TVersionGLSL::updateVersion(int version) -{ - mVersion = std::max(version, mVersion); -} - |