Switch the default blur algorithm to Kawase2.

Shan Huang · Shan Huang · commit 668b33b1e304 · 2024-12-06T22:48:56.000Z
Bug: 353826438
Test: m -j. Visually inspect blur effect.
Flag: com.android.graphics.surfaceflinger.flags.window_blur_kawase2
Change-Id: I7f9a02e16058ab9393bd8bbc925f344494450a39
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -877,6 +877,9 @@ renderengine::RenderEngine::BlurAlgorithm chooseBlurAlgorithm(bool supportsBlur)
     } else if (algorithm == "kawase2") {
         return renderengine::RenderEngine::BlurAlgorithm::KAWASE_DUAL_FILTER;
     } else {
+        if (FlagManager::getInstance().window_blur_kawase2()) {
+            return renderengine::RenderEngine::BlurAlgorithm::KAWASE_DUAL_FILTER;
+        }
         return renderengine::RenderEngine::BlurAlgorithm::KAWASE;
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -877,6 +877,9 @@ renderengine::RenderEngine::BlurAlgorithm chooseBlurAlgorithm(bool supportsBlur)`
`877`	`877`	`} else if (algorithm == "kawase2") {`
`878`	`878`	`return renderengine::RenderEngine::BlurAlgorithm::KAWASE_DUAL_FILTER;`
`879`	`879`	`} else {`
	`880`	`+ if (FlagManager::getInstance().window_blur_kawase2()) {`
	`881`	`+ return renderengine::RenderEngine::BlurAlgorithm::KAWASE_DUAL_FILTER;`
	`882`	`+ }`
`880`	`883`	`return renderengine::RenderEngine::BlurAlgorithm::KAWASE;`
`881`	`884`	`}`
`882`	`885`	`}`