Add ability to disable GL draws.
This feature is intended for use in headless test environments,
where disabling drawing has minimal compatibility impact and can
save significant resource usage when running UI tests.
This feature is controlled via a new system property
'debug.hwui.drawing_enabled', and a HardwareRenderer public API that can
override the property value on a per-process basis.
Bug: 188559292
Test: boot emulator, atest CtsGraphicsTestCases
Change-Id: I93c21e680382e03342f235dbf58bd7a5c8a6f767
diff --git a/libs/hwui/renderthread/CanvasContext.cpp b/libs/hwui/renderthread/CanvasContext.cpp
index 025be7b..ab9d0b2 100644
--- a/libs/hwui/renderthread/CanvasContext.cpp
+++ b/libs/hwui/renderthread/CanvasContext.cpp
@@ -256,7 +256,7 @@
}
void CanvasContext::allocateBuffers() {
- if (mNativeSurface) {
+ if (mNativeSurface && Properties::isDrawingEnabled()) {
ANativeWindow_tryAllocateBuffers(mNativeSurface->getNativeWindow());
}
}
@@ -480,7 +480,8 @@
SkRect dirty;
mDamageAccumulator.finish(&dirty);
- if (dirty.isEmpty() && Properties::skipEmptyFrames && !surfaceRequiresRedraw()) {
+ if (!Properties::isDrawingEnabled() ||
+ (dirty.isEmpty() && Properties::skipEmptyFrames && !surfaceRequiresRedraw())) {
mCurrentFrameInfo->addFlag(FrameInfoFlags::SkippedFrame);
// Notify the callbacks, even if there's nothing to draw so they aren't waiting
// indefinitely
diff --git a/libs/hwui/renderthread/CanvasContext.h b/libs/hwui/renderthread/CanvasContext.h
index 6dbfcc34..2fed468 100644
--- a/libs/hwui/renderthread/CanvasContext.h
+++ b/libs/hwui/renderthread/CanvasContext.h
@@ -90,9 +90,17 @@
* and false otherwise (e.g. cache limits have been exceeded).
*/
bool pinImages(std::vector<SkImage*>& mutableImages) {
+ if (!Properties::isDrawingEnabled()) {
+ return true;
+ }
return mRenderPipeline->pinImages(mutableImages);
}
- bool pinImages(LsaVector<sk_sp<Bitmap>>& images) { return mRenderPipeline->pinImages(images); }
+ bool pinImages(LsaVector<sk_sp<Bitmap>>& images) {
+ if (!Properties::isDrawingEnabled()) {
+ return true;
+ }
+ return mRenderPipeline->pinImages(images);
+ }
/**
* Unpin any image that had be previously pinned to the GPU cache
