以下是硬件加速在 Android 中的工作原理:
private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) {
mAttachInfo.mHardwareAccelerated = false;
mAttachInfo.mHardwareAccelerationRequested = false;
// Don't enable hardware acceleration when the application is in compatibility mode
if (mTranslator != null) return;
// Try to enable hardware acceleration if requested
final boolean hardwareAccelerated =
(attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0;
if (hardwareAccelerated) {
if (!HardwareRenderer.isAvailable()) {
return;
}
// Persistent processes (including the system) should not do
// accelerated rendering on low-end devices. In that case,
// sRendererDisabled will be set. In addition, the system process
// itself should never do accelerated rendering. In that case, both
// sRendererDisabled and sSystemRendererDisabled are set. When
// sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED
// can be used by code on the system process to escape that and enable
// HW accelerated drawing. (This is basically for the lock screen.)
final boolean fakeHwAccelerated = (attrs.privateFlags &
WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0;
final boolean forceHwAccelerated = (attrs.privateFlags &
WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0;
if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled
&& forceHwAccelerated)) {
// Don't enable hardware acceleration when we're not on the main thread
if (!HardwareRenderer.sSystemRendererDisabled
&& Looper.getMainLooper() != Looper.myLooper()) {
Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware "
+ "acceleration outside of the main thread, aborting");
return;
}
final boolean translucent = attrs.format != PixelFormat.OPAQUE;
if (mAttachInfo.mHardwareRenderer != null) {
mAttachInfo.mHardwareRenderer.destroy(true);
}
mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent);
mAttachInfo.mHardwareAccelerated = mAttachInfo.mHardwareAccelerationRequested
= mAttachInfo.mHardwareRenderer != null;
} else if (fakeHwAccelerated) {
// The window had wanted to use hardware acceleration, but this
// is not allowed in its process. By setting this flag, it can
// still render as if it was accelerated. This is basically for
// the preview windows the window manager shows for launching
// applications, so they will look more like the app being launched.
mAttachInfo.mHardwareAccelerationRequested = true;
}
}
}
从那里,您可以看到您获得的日志是在主线程之外询问硬件加速时(如日志所述)。
在您的情况下,您必须更深入地了解代码并查看所有非主线程,其中一个正在调用硬件加速。
如果没有更多细节(一些代码等),我无法帮助你。