commit ac33553131f7e18b6da18b6c4ade27c710c9c148
author Alec Mouri <alecmouri@google.com> Mon Nov 12 15:01:33 2018 -0800
committer Alec Mouri <alecmouri@google.com> Mon Jan 07 16:33:26 2019 -0800
tree 1632487650a62c5c28a377c03eea2431c72da766
parent 83da23586be6bf255ffd2aee9686623463e0ce6b

Clear region before drawing layers.

Bug: 118461793
Change-Id: I3c0e4efb10475121c9d8d41692dc360c0d727f12
Test: librenderengine_test

libs/renderengine/gl/GLESRenderEngine.cpp

diff --git a/libs/renderengine/gl/GLESRenderEngine.cpp b/libs/renderengine/gl/GLESRenderEngine.cpp
index d0a0ac8..c5c4cc4 100644
--- a/libs/renderengine/gl/GLESRenderEngine.cpp
+++ b/libs/renderengine/gl/GLESRenderEngine.cpp
@@ -714,6 +714,10 @@
     setDisplayMaxLuminance(display.maxLuminance);
 
     mat4 projectionMatrix = mState.projectionMatrix * display.globalTransform;
+    mState.projectionMatrix = projectionMatrix;
+    if (!display.clearRegion.isEmpty()) {
+        fillRegionWithColor(display.clearRegion, 0.0, 0.0, 0.0, 1.0);
+    }
 
     Mesh mesh(Mesh::TRIANGLE_FAN, 4, 2, 2);
     for (auto layer : layers) {