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-rwxr-xr-xgfx/angle/src/compiler/translator/DirectiveHandler.cpp202
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