Bind to FBO when using GPU composition
We'll manage the ANativeWindow directly to pull buffers for drawing.
Some additional minor changes have snuck in to clean up unnecessary GL
calls. Checking simpleperf there is now 0 GL overhead during HWC
composed frames.
Bug: 117680609
Change-Id: If639ce2c6cd600eabb957d278815f80b413d92b3
Test: libsurfaceflinger_unittest, SurfaceFlinger_test, go/wm-smoke
Test: Android Auto works in my car
Test: Manual inspection of simulated virtual displays
diff --git a/services/surfaceflinger/DisplayDevice.cpp b/services/surfaceflinger/DisplayDevice.cpp
index be19b9f..ac51d53 100644
--- a/services/surfaceflinger/DisplayDevice.cpp
+++ b/services/surfaceflinger/DisplayDevice.cpp
@@ -35,6 +35,8 @@
#include <gui/Surface.h>
#include <hardware/gralloc.h>
#include <renderengine/RenderEngine.h>
+#include <sync/sync.h>
+#include <system/window.h>
#include <ui/DebugUtils.h>
#include <ui/DisplayInfo.h>
#include <ui/PixelFormat.h>
@@ -221,6 +223,7 @@
mDisplayToken(args.displayToken),
mId(args.displayId),
mNativeWindow(args.nativeWindow),
+ mGraphicBuffer(nullptr),
mDisplaySurface(args.displaySurface),
mSurface{std::move(args.renderSurface)},
mDisplayInstallOrientation(args.displayInstallOrientation),
@@ -284,6 +287,10 @@
mHdrCapabilities = HdrCapabilities(types, maxLuminance, maxAverageLuminance, minLuminance);
ANativeWindow* const window = mNativeWindow.get();
+
+ int status = native_window_api_connect(mNativeWindow.get(), NATIVE_WINDOW_API_EGL);
+ ALOGE_IF(status != NO_ERROR, "Unable to connect BQ producer: %d", status);
+
mDisplayWidth = ANativeWindow_getWidth(window);
mDisplayHeight = ANativeWindow_getHeight(window);
@@ -321,7 +328,6 @@
void DisplayDevice::flip() const
{
- mFlinger->getRenderEngine().checkErrors();
mPageFlipCount++;
}
@@ -356,9 +362,71 @@
return mDisplaySurface->prepareFrame(compositionType);
}
-void DisplayDevice::swapBuffers(HWComposer& hwc) const {
+sp<GraphicBuffer> DisplayDevice::dequeueBuffer() {
+ int fd;
+ ANativeWindowBuffer* buffer;
+
+ status_t res = mNativeWindow->dequeueBuffer(mNativeWindow.get(), &buffer, &fd);
+
+ if (res != NO_ERROR) {
+ ALOGE("ANativeWindow::dequeueBuffer failed for display [%s] with error: %d",
+ getDisplayName().c_str(), res);
+ // Return fast here as we can't do much more - any rendering we do
+ // now will just be wrong.
+ return mGraphicBuffer;
+ }
+
+ ALOGW_IF(mGraphicBuffer != nullptr, "Clobbering a non-null pointer to a buffer [%p].",
+ mGraphicBuffer->getNativeBuffer()->handle);
+ mGraphicBuffer = GraphicBuffer::from(buffer);
+
+ // Block until the buffer is ready
+ // TODO(alecmouri): it's perhaps more appropriate to block renderengine so
+ // that the gl driver can block instead.
+ if (fd >= 0) {
+ sync_wait(fd, -1);
+ close(fd);
+ }
+
+ return mGraphicBuffer;
+}
+
+void DisplayDevice::queueBuffer(HWComposer& hwc) {
if (hwc.hasClientComposition(mId) || hwc.hasFlipClientTargetRequest(mId)) {
- mSurface->swapBuffers();
+ // hasFlipClientTargetRequest could return true even if we haven't
+ // dequeued a buffer before. Try dequeueing one if we don't have a
+ // buffer ready.
+ if (mGraphicBuffer == nullptr) {
+ ALOGI("Attempting to queue a client composited buffer without one "
+ "previously dequeued for display [%s]. Attempting to dequeue "
+ "a scratch buffer now",
+ mDisplayName.c_str());
+ // We shouldn't deadlock here, since mGraphicBuffer == nullptr only
+ // after a successful call to queueBuffer, or if dequeueBuffer has
+ // never been called.
+ dequeueBuffer();
+ }
+
+ if (mGraphicBuffer == nullptr) {
+ ALOGE("No buffer is ready for display [%s]", mDisplayName.c_str());
+ } else {
+ int fd = mBufferReady.release();
+
+ status_t res = mNativeWindow->queueBuffer(mNativeWindow.get(),
+ mGraphicBuffer->getNativeBuffer(), fd);
+ if (res != NO_ERROR) {
+ ALOGE("Error when queueing buffer for display [%s]: %d", mDisplayName.c_str(), res);
+ // We risk blocking on dequeueBuffer if the primary display failed
+ // to queue up its buffer, so crash here.
+ if (isPrimary()) {
+ LOG_ALWAYS_FATAL("ANativeWindow::queueBuffer failed with error: %d", res);
+ } else {
+ mNativeWindow->cancelBuffer(mNativeWindow.get(),
+ mGraphicBuffer->getNativeBuffer(), fd);
+ }
+ }
+ mGraphicBuffer = nullptr;
+ }
}
status_t result = mDisplaySurface->advanceFrame();
@@ -367,7 +435,7 @@
}
}
-void DisplayDevice::onSwapBuffersCompleted() const {
+void DisplayDevice::onPresentDisplayCompleted() {
mDisplaySurface->onFrameCommitted();
}
@@ -384,6 +452,13 @@
mFlinger->getRenderEngine().setViewportAndProjection(w, h, sourceCrop, ui::Transform::ROT_0);
}
+void DisplayDevice::finishBuffer() {
+ mBufferReady = mFlinger->getRenderEngine().flush();
+ if (mBufferReady.get() < 0) {
+ mFlinger->getRenderEngine().finish();
+ }
+}
+
const sp<Fence>& DisplayDevice::getClientTargetAcquireFence() const {
return mDisplaySurface->getClientTargetAcquireFence();
}