Handle compressed textures allocated via TexStorage2D.

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp

 // Copyright 2015 The Chromium 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 "modules/webgl/WebGL2RenderingContextBase.h"
 
 #include "bindings/modules/v8/WebGLAny.h"
 #include "core/frame/ImageBitmap.h"
 #include "core/html/HTMLCanvasElement.h"
 #include "core/html/HTMLImageElement.h"
@@ skipping 762 matching lines @@
             synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid 3D target");
             return false;
         }
     }
 
     if (functionType == TexStorageType3D && target != GL_TEXTURE_2D_ARRAY && m_compressedTextureFormatsETC2EAC.find(internalformat) != m_compressedTextureFormatsETC2EAC.end()) {
         synthesizeGLError(GL_INVALID_OPERATION, functionName, "target for ETC2/EAC internal formats must be TEXTURE_2D_ARRAY");
         return false;
     }
 
-    if (m_supportedInternalFormatsStorage.find(internalformat) == m_supportedInternalFormatsStorage.end()) {
+    if (m_supportedInternalFormatsStorage.find(internalformat) == m_supportedInternalFormatsStorage.end()
+        && (functionType == TexStorageType2D && !m_compressedTextureFormats.contains(internalformat))) {
         synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid internalformat");
         return false;
     }
 
     if (width <= 0 || height <= 0 || depth <= 0) {
         synthesizeGLError(GL_INVALID_VALUE, functionName, "invalid dimensions");
         return false;
     }
 
     if (levels <= 0) {
@@ skipping 2784 matching lines @@
     params.skipPixels = m_unpackSkipPixels;
     params.skipRows = m_unpackSkipRows;
     if (dimension == Tex3D) {
         params.imageHeight = m_unpackImageHeight;
         params.skipImages = m_unpackSkipImages;
     }
     return params;
 }
 
 } // namespace blink