diff options
Diffstat (limited to 'gfx/angle/src/compiler/translator/DirectiveHandler.cpp')
| -rwxr-xr-x | gfx/angle/src/compiler/translator/DirectiveHandler.cpp | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/gfx/angle/src/compiler/translator/DirectiveHandler.cpp b/gfx/angle/src/compiler/translator/DirectiveHandler.cpp new file mode 100755 index 000000000..073994d3c --- /dev/null +++ b/gfx/angle/src/compiler/translator/DirectiveHandler.cpp @@ -0,0 +1,202 @@ +// +// Copyright (c) 2012-2013 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/translator/DirectiveHandler.h" + +#include <sstream> + +#include "angle_gl.h" +#include "common/debug.h" +#include "compiler/translator/Diagnostics.h" + +namespace sh +{ + +static TBehavior getBehavior(const std::string& str) +{ + const char kRequire[] = "require"; + const char kEnable[] = "enable"; + const char kDisable[] = "disable"; + const char kWarn[] = "warn"; + + if (str == kRequire) return EBhRequire; + else if (str == kEnable) return EBhEnable; + else if (str == kDisable) return EBhDisable; + else if (str == kWarn) return EBhWarn; + return EBhUndefined; +} + +TDirectiveHandler::TDirectiveHandler(TExtensionBehavior &extBehavior, + TDiagnostics &diagnostics, + int &shaderVersion, + sh::GLenum shaderType, + bool debugShaderPrecisionSupported) + : mExtensionBehavior(extBehavior), + mDiagnostics(diagnostics), + mShaderVersion(shaderVersion), + mShaderType(shaderType), + mDebugShaderPrecisionSupported(debugShaderPrecisionSupported) +{ +} + +TDirectiveHandler::~TDirectiveHandler() +{ +} + +void TDirectiveHandler::handleError(const pp::SourceLocation& loc, + const std::string& msg) +{ + mDiagnostics.writeInfo(pp::Diagnostics::PP_ERROR, loc, msg, "", ""); +} + +void TDirectiveHandler::handlePragma(const pp::SourceLocation& loc, + const std::string& name, + const std::string& value, + bool stdgl) +{ + if (stdgl) + { + const char kInvariant[] = "invariant"; + const char kAll[] = "all"; + + if (name == kInvariant && value == kAll) + { + if (mShaderVersion == 300 && mShaderType == GL_FRAGMENT_SHADER) + { + // ESSL 3.00.4 section 4.6.1 + mDiagnostics.writeInfo( + pp::Diagnostics::PP_ERROR, loc, + "#pragma STDGL invariant(all) can not be used in fragment shader", name, value); + } + mPragma.stdgl.invariantAll = true; + } + // The STDGL pragma is used to reserve pragmas for use by future + // revisions of GLSL. Do not generate an error on unexpected + // name and value. + return; + } + else + { + const char kOptimize[] = "optimize"; + const char kDebug[] = "debug"; + const char kDebugShaderPrecision[] = "webgl_debug_shader_precision"; + const char kOn[] = "on"; + const char kOff[] = "off"; + + bool invalidValue = false; + if (name == kOptimize) + { + if (value == kOn) mPragma.optimize = true; + else if (value == kOff) mPragma.optimize = false; + else invalidValue = true; + } + else if (name == kDebug) + { + if (value == kOn) mPragma.debug = true; + else if (value == kOff) mPragma.debug = false; + else invalidValue = true; + } + else if (name == kDebugShaderPrecision && mDebugShaderPrecisionSupported) + { + if (value == kOn) mPragma.debugShaderPrecision = true; + else if (value == kOff) mPragma.debugShaderPrecision = false; + else invalidValue = true; + } + else + { + mDiagnostics.report(pp::Diagnostics::PP_UNRECOGNIZED_PRAGMA, loc, name); + return; + } + + if (invalidValue) + { + mDiagnostics.writeInfo(pp::Diagnostics::PP_ERROR, loc, + "invalid pragma value", value, + "'on' or 'off' expected"); + } + } +} + +void TDirectiveHandler::handleExtension(const pp::SourceLocation& loc, + const std::string& name, + const std::string& behavior) +{ + const char kExtAll[] = "all"; + + TBehavior behaviorVal = getBehavior(behavior); + if (behaviorVal == EBhUndefined) + { + mDiagnostics.writeInfo(pp::Diagnostics::PP_ERROR, loc, + "behavior", name, "invalid"); + return; + } + + if (name == kExtAll) + { + if (behaviorVal == EBhRequire) + { + mDiagnostics.writeInfo(pp::Diagnostics::PP_ERROR, loc, + "extension", name, + "cannot have 'require' behavior"); + } + else if (behaviorVal == EBhEnable) + { + mDiagnostics.writeInfo(pp::Diagnostics::PP_ERROR, loc, + "extension", name, + "cannot have 'enable' behavior"); + } + else + { + for (TExtensionBehavior::iterator iter = mExtensionBehavior.begin(); + iter != mExtensionBehavior.end(); ++iter) + iter->second = behaviorVal; + } + return; + } + + TExtensionBehavior::iterator iter = mExtensionBehavior.find(name); + if (iter != mExtensionBehavior.end()) + { + iter->second = behaviorVal; + return; + } + + pp::Diagnostics::Severity severity = pp::Diagnostics::PP_ERROR; + switch (behaviorVal) { + case EBhRequire: + severity = pp::Diagnostics::PP_ERROR; + break; + case EBhEnable: + case EBhWarn: + case EBhDisable: + severity = pp::Diagnostics::PP_WARNING; + break; + default: + UNREACHABLE(); + break; + } + mDiagnostics.writeInfo(severity, loc, + "extension", name, "is not supported"); +} + +void TDirectiveHandler::handleVersion(const pp::SourceLocation& loc, + int version) +{ + if (version == 100 || version == 300 || version == 310) + { + mShaderVersion = version; + } + else + { + std::stringstream stream; + stream << version; + std::string str = stream.str(); + mDiagnostics.writeInfo(pp::Diagnostics::PP_ERROR, loc, + "version number", str, "not supported"); + } +} + +} // namespace sh |