1 files changed, 18 insertions, 0 deletions
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 7edbdc5..c1561b2 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -63,6 +63,7 @@ Layer::Layer(SurfaceFlinger* flinger, const sp<Client>& client)
         mFormat(PIXEL_FORMAT_NONE),
         mGLExtensions(GLExtensions::getInstance()),
         mOpaqueLayer(true),
+        mNeedsDithering(false),
         mSecure(false),
         mProtectedByApp(false)
 {
@@ -194,6 +195,23 @@ status_t Layer::setBuffers( uint32_t w, uint32_t h,
     mSurfaceTexture->setDefaultBufferFormat(format);
     mSurfaceTexture->setConsumerUsageBits(getEffectiveUsage(0));
 
+    int displayMinColorDepth;
+    int layerRedsize;
+    switch (mFlinger->getUseDithering()) {
+    case 0:
+        mNeedsDithering = false;
+        break;
+    case 1:
+        displayMinColorDepth = mFlinger->getMinColorDepth();
+        // we use the red index
+        layerRedsize = info.getSize(PixelFormatInfo::INDEX_RED);
+        mNeedsDithering = (layerRedsize > displayMinColorDepth);
+        break;
+    case 2:
+        mNeedsDithering = true;
+        break;
+    }
+
     return NO_ERROR;
 }