commit 19c8f0e4fe37ffa86a7cbc879c23e4da2ff97e1c
author Lucas Dupin <dupin@google.com> Mon Nov 25 17:55:44 2019 -0800
committer Lucas Dupin <dupin@google.com> Mon Jan 20 12:32:18 2020 -0800
tree 47645400d625fa71de468c6ef510780056da8bcf
parent fbb86a6baec5b0e91a94413a629d7a49f000d28b

Add support for background blurs

Bug: 141640413
Fixes: 146384234
Test: adb shell setprop debug.sf.disableBlurs 1
Test: adb shell setprop debug.sf.gaussianBlur 0
Test: adb shell setprop ro.surface_flinger.supports_background_blur 1
Test: ./SurfaceFlinger_test --gtest_filter=Layer*Tests/Layer*Test.SetBackgroundBlur*
Test: ./librenderengine_test --gtest_filter=*BlurBackground*"
Test: atest SurfaceFlinger_test:SurfaceInterceptorTest#InterceptBackgroundBlurRadiusUpdateWorks
Change-Id: I5194c910fe7062f33e70943867012539e6c6626a

services/surfaceflinger/SurfaceFlinger.cpp

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 0a33830..ba57d37 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -338,6 +338,14 @@
     mLayerTripleBufferingDisabled = atoi(value);
     ALOGI_IF(mLayerTripleBufferingDisabled, "Disabling Triple Buffering");
 
+    property_get("ro.surface_flinger.supports_background_blur", value, "0");
+    bool supportsBlurs = atoi(value);
+    property_get("debug.sf.disableBlurs", value, "0");
+    bool disableBlurs = atoi(value);
+    mEnableBlurs = supportsBlurs && !disableBlurs;
+    ALOGI_IF(!mEnableBlurs, "Disabling blur effects. supported: %d, disabled: %d", supportsBlurs,
+             disableBlurs);
+
     const size_t defaultListSize = MAX_LAYERS;
     auto listSize = property_get_int32("debug.sf.max_igbp_list_size", int32_t(defaultListSize));
     mMaxGraphicBufferProducerListSize = (listSize > 0) ? size_t(listSize) : defaultListSize;
@@ -580,6 +588,7 @@
                 .setUseColorManagerment(useColorManagement)
                 .setEnableProtectedContext(enable_protected_contents(false))
                 .setPrecacheToneMapperShaderOnly(false)
+                .setSupportsBackgroundBlur(mEnableBlurs)
                 .setContextPriority(useContextPriority
                         ? renderengine::RenderEngine::ContextPriority::HIGH
                         : renderengine::RenderEngine::ContextPriority::MEDIUM)
@@ -3379,6 +3388,9 @@
         if (layer->setCornerRadius(s.cornerRadius))
             flags |= eTraversalNeeded;
     }
+    if (what & layer_state_t::eBackgroundBlurRadiusChanged) {
+        if (layer->setBackgroundBlurRadius(s.backgroundBlurRadius)) flags |= eTraversalNeeded;
+    }
     if (what & layer_state_t::eLayerStackChanged) {
         ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer);
         // We only allow setting layer stacks for top level layers,