1 files changed, 122 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/compiler/translator/OutputGLSL.cpp b/gfx/angle/checkout/src/compiler/translator/OutputGLSL.cpp
new file mode 100644
index 0000000000..0045a76dfc
--- /dev/null
+++ b/gfx/angle/checkout/src/compiler/translator/OutputGLSL.cpp
@@ -0,0 +1,122 @@
+//
+// 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.
+//
+
+#include "compiler/translator/OutputGLSL.h"
+
+#include "compiler/translator/Compiler.h"
+
+namespace sh
+{
+
+TOutputGLSL::TOutputGLSL(TCompiler *compiler,
+                         TInfoSinkBase &objSink,
+                         const ShCompileOptions &compileOptions)
+    : TOutputGLSLBase(compiler, objSink, compileOptions)
+{}
+
+bool TOutputGLSL::writeVariablePrecision(TPrecision)
+{
+    return false;
+}
+
+void TOutputGLSL::visitSymbol(TIntermSymbol *node)
+{
+    TInfoSinkBase &out = objSink();
+
+    // All the special cases are built-ins, so if it's not a built-in we can return early.
+    if (node->variable().symbolType() != SymbolType::BuiltIn)
+    {
+        TOutputGLSLBase::visitSymbol(node);
+        return;
+    }
+
+    // Some built-ins get a special translation.
+    const ImmutableString &name = node->getName();
+    if (name == "gl_FragDepthEXT")
+    {
+        out << "gl_FragDepth";
+    }
+    else if (name == "gl_FragColor" && sh::IsGLSL130OrNewer(getShaderOutput()))
+    {
+        out << "webgl_FragColor";
+    }
+    else if (name == "gl_FragData" && sh::IsGLSL130OrNewer(getShaderOutput()))
+    {
+        out << "webgl_FragData";
+    }
+    else if (name == "gl_SecondaryFragColorEXT")
+    {
+        out << "webgl_SecondaryFragColor";
+    }
+    else if (name == "gl_SecondaryFragDataEXT")
+    {
+        out << "webgl_SecondaryFragData";
+    }
+    else
+    {
+        TOutputGLSLBase::visitSymbol(node);
+    }
+}
+
+ImmutableString TOutputGLSL::translateTextureFunction(const ImmutableString &name,
+                                                      const ShCompileOptions &option)
+{
+    // Check WEBGL_video_texture invocation first.
+    if (name == "textureVideoWEBGL")
+    {
+        if (option.takeVideoTextureAsExternalOES)
+        {
+            // TODO(http://anglebug.com/3889): Implement external image situation.
+            UNIMPLEMENTED();
+            return ImmutableString("");
+        }
+        else
+        {
+            // Default translating textureVideoWEBGL to texture2D.
+            return ImmutableString("texture2D");
+        }
+    }
+
+    static const char *simpleRename[]       = {"texture2DLodEXT",
+                                               "texture2DLod",
+                                               "texture2DProjLodEXT",
+                                               "texture2DProjLod",
+                                               "textureCubeLodEXT",
+                                               "textureCubeLod",
+                                               "texture2DGradEXT",
+                                               "texture2DGradARB",
+                                               "texture2DProjGradEXT",
+                                               "texture2DProjGradARB",
+                                               "textureCubeGradEXT",
+                                               "textureCubeGradARB",
+                                               nullptr,
+                                               nullptr};
+    static const char *legacyToCoreRename[] = {
+        "texture2D", "texture", "texture2DProj", "textureProj", "texture2DLod", "textureLod",
+        "texture2DProjLod", "textureProjLod", "texture2DRect", "texture", "texture2DRectProj",
+        "textureProj", "textureCube", "texture", "textureCubeLod", "textureLod",
+        // Extensions
+        "texture2DLodEXT", "textureLod", "texture2DProjLodEXT", "textureProjLod",
+        "textureCubeLodEXT", "textureLod", "texture2DGradEXT", "textureGrad",
+        "texture2DProjGradEXT", "textureProjGrad", "textureCubeGradEXT", "textureGrad", "texture3D",
+        "texture", "texture3DProj", "textureProj", "texture3DLod", "textureLod", "texture3DProjLod",
+        "textureProjLod", "shadow2DEXT", "texture", "shadow2DProjEXT", "textureProj", nullptr,
+        nullptr};
+    const char **mapping =
+        (sh::IsGLSL130OrNewer(getShaderOutput())) ? legacyToCoreRename : simpleRename;
+
+    for (int i = 0; mapping[i] != nullptr; i += 2)
+    {
+        if (name == mapping[i])
+        {
+            return ImmutableString(mapping[i + 1]);
+        }
+    }
+
+    return name;
+}
+
+}  // namespace sh