Updates resulting from the Skia merge (revision 1327)

Change-Id: I1d2cecbad6c30e6ebc9579093404742f17e14e84

core/jni/android/graphics/Canvas.cpp

@@ -72,20 +72,6 @@ public:
     static jboolean isOpaque(JNIEnv* env, jobject jcanvas) {
         NPE_CHECK_RETURN_ZERO(env, jcanvas);
         SkCanvas* canvas = GraphicsJNI::getNativeCanvas(env, jcanvas);
-
-        /*
-            Currently we cannot support transparency in GL-based canvas' at
-            the view level. Therefore we cannot base our answer on the device's
-            bitmap, but need to hard-code the answer. If we relax this
-            limitation in views, we can simplify the following code as well.
-         
-            Use the getViewport() call to find out if we're gl-based...
-        */
-        if (canvas->getViewport(NULL)) {
-            return true;
-        }
-        
-        // normal technique, rely on the device's bitmap for the answer
         return canvas->getDevice()->accessBitmap(false).isOpaque();
     }
     

core/jni/android/graphics/NinePatchImpl.cpp

@@ -116,9 +116,9 @@ void NinePatch_Draw(SkCanvas* canvas, const SkRect& bounds,
         paint = &defaultPaint;
     }
     
-    // if our canvas is GL, draw this as a mesh, which will be faster than
-    // in parts (which is faster for raster)
-    if (canvas && canvas->getViewport(NULL)) {
+    // if our SkCanvas were back by GL we should enable this and draw this as
+    // a mesh, which will be faster in most cases.
+    if (false) {
         SkNinePatch::DrawMesh(canvas, bounds, bitmap,
                               chunk.xDivs, chunk.numXDivs,
                               chunk.yDivs, chunk.numYDivs,

libs/hwui/OpenGLRenderer.cpp

@@ -2004,12 +2004,11 @@ void OpenGLRenderer::getAlphaAndMode(SkPaint* paint, int* alpha, SkXfermode::Mod
 }
 
 SkXfermode::Mode OpenGLRenderer::getXfermode(SkXfermode* mode) {
-    // In the future we should look at unifying the Porter-Duff modes and
-    // SkXferModes so that we can use SkXfermode::IsMode(xfer, &mode).
-    if (mode == NULL) {
-        return SkXfermode::kSrcOver_Mode;
+    SkXfermode::Mode resultMode;
+    if (!SkXfermode::AsMode(mode, &resultMode)) {
+        resultMode = SkXfermode::kSrcOver_Mode;
     }
-    return mode->fMode;
+    return resultMode;
 }
 
 void OpenGLRenderer::setTextureWrapModes(Texture* texture, GLenum wrapS, GLenum wrapT) {