commit d35c6667c8233385f31aa203f486b2cb826bf6be
author Mathias Agopian <mathias@google.com> Tue Jan 25 20:17:45 2011 -0800
committer Mathias Agopian <mathias@google.com> Tue Jan 25 20:52:46 2011 -0800
tree 7e565ff5bc3df082b597ecd9d8f94bbff6a374e9
parent 2aaa776429f58069e25c8160a9e5b9a969f6e993

fix [3385504] Surface flinger hang when adding dim surface

Change-Id: I8e0cda414bcad5854d2ca5dde8370bfd8b2e5ea4

services/surfaceflinger/LayerDim.cpp

diff --git a/services/surfaceflinger/LayerDim.cpp b/services/surfaceflinger/LayerDim.cpp
index 80cc52c..11f8feb 100644
--- a/services/surfaceflinger/LayerDim.cpp
+++ b/services/surfaceflinger/LayerDim.cpp
@@ -67,8 +67,14 @@
         const GLfloat alpha = s.alpha/255.0f;
         const uint32_t fbHeight = hw.getHeight();
         glDisable(GL_DITHER);
-        glEnable(GL_BLEND);
-        glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+
+        if (s.alpha == 0xFF) {
+            glDisable(GL_BLEND);
+        } else {
+            glEnable(GL_BLEND);
+            glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+        }
+
         glColor4f(0, 0, 0, alpha);
 
 #if defined(GL_OES_EGL_image_external)