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| author | Danny Lin <danny@kdrag0n.dev> | 2021-04-11 16:35:08 -0700 |
|---|---|---|
| committer | alk3pInjection <webmaster@raspii.tech> | 2021-09-27 21:17:05 +0800 |
| commit | 6b847185514d3e2de01aa0cf6b0f91f47da05f9f (patch) | |
| tree | 2c94f750435fe2f9703c68c4d4d3a34de1d77e5e | |
| parent | e7648d1a6ccb4ac73c10a95495c4e7603bcfe888 (diff) | |
[ProtonAOSP] blur: Limit blur to the two frontmost layers
Rendering 3 or more layers of blur on top of each other makes little to
no visual difference in the final result, but it comes at a big
performance penalty. Only blurring the two frontmost layers saves a lot
of GPU time with minimal difference in output quality.
Change-Id: I9ec8129751a183db00ad200080207434f086a63e
| -rw-r--r-- | libs/renderengine/gl/GLESRenderEngine.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libs/renderengine/gl/GLESRenderEngine.cpp b/libs/renderengine/gl/GLESRenderEngine.cpp index 0285c2f6f0..04568de87b 100644 --- a/libs/renderengine/gl/GLESRenderEngine.cpp +++ b/libs/renderengine/gl/GLESRenderEngine.cpp @@ -1062,6 +1062,14 @@ status_t GLESRenderEngine::drawLayers(const DisplaySettings& display, } } } + + // Limit blur to the two frontmost layers for performance. We need one at the front + // and one behind for cross-fading and additional blurring. Rendering additional layers + // comes at a big performance penalty and makes little to no noticeable difference. + while (blurLayers.size() > 2) { + blurLayers.pop_front(); + } + const auto blurLayersSize = blurLayers.size(); if (blurLayersSize == 0) { |