SF: Verify mDebugDisableHWC forces client composition

Add a composition test to verify that setting setting mDebugDisableHWC
to true causes client composition to be performed.

Test: atest libsurfaceflinger_unittest
Bug: None
Change-Id: Iad5e8fbe4d77ba61460e03c5dfa9c0686e11fcc5

2 files changed, 39 insertions, 0 deletions

diff --git a/services/surfaceflinger/tests/unittests/CompositionTest.cpp b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
index b6fa2a6403..8aff096d5e 100644
--- a/services/surfaceflinger/tests/unittests/CompositionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
@@ -1039,6 +1039,26 @@ struct ForcedClientCompositionResultVariant : public CompositionResultBaseVarian
     static void setupCallExpectationsForDirtyFrame(CompositionTest*) {}
 };
 
+struct ForcedClientCompositionViaDebugOptionResultVariant : public CompositionResultBaseVariant {
+    static void setupLayerState(CompositionTest* test, sp<Layer>) {
+        test->mFlinger.mutableDebugDisableHWC() = true;
+    }
+
+    template <typename Case>
+    static void setupCallExpectations(CompositionTest* test) {
+        Case::Display::setupNonEmptyFrameCompositionCallExpectations(test);
+        Case::Display::setupHwcForcedClientCompositionCallExpectations(test);
+        Case::Display::setupRECompositionCallExpectations(test);
+        Case::Display::template setupRELayerCompositionCallExpectations<Case>(test);
+    }
+
+    template <typename Case>
+    static void setupCallExpectationsForDirtyGeometry(CompositionTest*) {}
+
+    template <typename Case>
+    static void setupCallExpectationsForDirtyFrame(CompositionTest*) {}
+};
+
 struct EmptyScreenshotResultVariant {
     static void setupLayerState(CompositionTest*, sp<Layer>) {}
 
@@ -1350,5 +1370,23 @@ TEST_F(CompositionTest, captureScreenNormalBufferLayerOnPoweredOffDisplay) {
             NoCompositionTypeVariant, REScreenshotResultVariant>>();
 }
 
+/* ------------------------------------------------------------------------
+ *  Client composition forced through debug/developer settings
+ */
+
+TEST_F(CompositionTest, DebugOptionForcingClientCompositionOfBufferLayerWithDirtyGeometry) {
+    displayRefreshCompositionDirtyGeometry<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<DefaultLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::CLIENT>,
+                            ForcedClientCompositionViaDebugOptionResultVariant>>();
+}
+
+TEST_F(CompositionTest, DebugOptionForcingClientCompositionOfBufferLayerWithDirtyFrame) {
+    displayRefreshCompositionDirtyFrame<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<DefaultLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::CLIENT>,
+                            ForcedClientCompositionViaDebugOptionResultVariant>>();
+}
+
 } // namespace
 } // namespace android
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index b77f82a7f8..926b8ac623 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -356,6 +356,7 @@ public:
     auto& mutableTransactionFlags() { return mFlinger->mTransactionFlags; }
     auto& mutableUseHwcVirtualDisplays() { return mFlinger->mUseHwcVirtualDisplays; }
     auto& mutablePowerAdvisor() { return mFlinger->mPowerAdvisor; }
+    auto& mutableDebugDisableHWC() { return mFlinger->mDebugDisableHWC; }
 
     auto& mutableComposerSequenceId() { return mFlinger->getBE().mComposerSequenceId; }
     auto& mutableHwcDisplayData() { return getHwComposer().mDisplayData; }