Refactor HardwareLayer
Defer all the things!
Groundwork to allow hardware layers to work in a renderthread world
Change-Id: Ib3aa47525f393083621254a743dbaa6352f933bd
diff --git a/libs/hwui/DeferredLayerUpdater.cpp b/libs/hwui/DeferredLayerUpdater.cpp
new file mode 100644
index 0000000..ed05d04
--- /dev/null
+++ b/libs/hwui/DeferredLayerUpdater.cpp
@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "DeferredLayerUpdater.h"
+
+#include "OpenGLRenderer.h"
+
+#include "LayerRenderer.h"
+
+namespace android {
+namespace uirenderer {
+
+DeferredLayerUpdater::DeferredLayerUpdater(Layer* layer, OpenGLRenderer* renderer)
+ : mDisplayList(0)
+ , mSurfaceTexture(0)
+ , mTransform(0)
+ , mNeedsGLContextAttach(false)
+ , mUpdateTexImage(false)
+ , mLayer(layer)
+ , mRenderer(renderer)
+ , mCaches(Caches::getInstance()) {
+ mCaches.resourceCache.incrementRefcount(mLayer);
+ mWidth = mLayer->layer.getWidth();
+ mHeight = mLayer->layer.getHeight();
+ mBlend = mLayer->isBlend();
+ mColorFilter = mLayer->getColorFilter();
+ mAlpha = mLayer->getAlpha();
+ mMode = mLayer->getMode();
+ mDirtyRect.setEmpty();
+}
+
+DeferredLayerUpdater::~DeferredLayerUpdater() {
+ setColorFilter(NULL);
+ if (mLayer) {
+ mCaches.resourceCache.decrementRefcount(mLayer);
+ }
+ delete mRenderer;
+}
+
+void DeferredLayerUpdater::setColorFilter(SkColorFilter* colorFilter) {
+ SkRefCnt_SafeAssign(mColorFilter, colorFilter);
+}
+
+void DeferredLayerUpdater::setDisplayList(DisplayList* displayList,
+ int left, int top, int right, int bottom) {
+ mDisplayList = displayList;
+ if (mDirtyRect.isEmpty()) {
+ mDirtyRect.set(left, top, right, bottom);
+ } else {
+ mDirtyRect.unionWith(Rect(left, top, right, bottom));
+ }
+}
+
+bool DeferredLayerUpdater::apply() {
+ bool success = true;
+ // These properties are applied the same to both layer types
+ mLayer->setColorFilter(mColorFilter);
+ mLayer->setAlpha(mAlpha, mMode);
+
+ if (mDisplayList) {
+ if (mWidth != mLayer->layer.getWidth() || mHeight != mLayer->layer.getHeight()) {
+ success = LayerRenderer::resizeLayer(mLayer, mWidth, mHeight);
+ }
+ mLayer->setBlend(mBlend);
+ mLayer->updateDeferred(mRenderer, mDisplayList,
+ mDirtyRect.left, mDirtyRect.top, mDirtyRect.right, mDirtyRect.bottom);
+ mDirtyRect.setEmpty();
+ mDisplayList = 0;
+ } else if (mSurfaceTexture.get()) {
+ if (mNeedsGLContextAttach) {
+ mNeedsGLContextAttach = false;
+ mSurfaceTexture->attachToContext(mLayer->getTexture());
+ }
+ if (mUpdateTexImage) {
+ mUpdateTexImage = false;
+ doUpdateTexImage();
+ }
+ if (mTransform) {
+ mLayer->getTransform().load(*mTransform);
+ setTransform(0);
+ }
+ }
+ return success;
+}
+
+void DeferredLayerUpdater::doUpdateTexImage() {
+ if (mSurfaceTexture->updateTexImage() == NO_ERROR) {
+ float transform[16];
+
+ int64_t frameNumber = mSurfaceTexture->getFrameNumber();
+ // If the GLConsumer queue is in synchronous mode, need to discard all
+ // but latest frame, using the frame number to tell when we no longer
+ // have newer frames to target. Since we can't tell which mode it is in,
+ // do this unconditionally.
+ int dropCounter = 0;
+ while (mSurfaceTexture->updateTexImage() == NO_ERROR) {
+ int64_t newFrameNumber = mSurfaceTexture->getFrameNumber();
+ if (newFrameNumber == frameNumber) break;
+ frameNumber = newFrameNumber;
+ dropCounter++;
+ }
+ #if DEBUG_RENDERER
+ if (dropCounter > 0) {
+ RENDERER_LOGD("Dropped %d frames on texture layer update", dropCounter);
+ }
+ #endif
+ mSurfaceTexture->getTransformMatrix(transform);
+ GLenum renderTarget = mSurfaceTexture->getCurrentTextureTarget();
+
+ LayerRenderer::updateTextureLayer(mLayer, mWidth, mHeight, !mBlend,
+ renderTarget, transform);
+ }
+}
+
+void DeferredLayerUpdater::applyDeferred(DeferredLayerUpdater* deferredApply) {
+ // Default assignment operator doesn't quite work, and fails due to mCaches anyway
+ deferredApply->mWidth = mWidth;
+ deferredApply->mHeight = mHeight;
+ deferredApply->mBlend = mBlend;
+ deferredApply->mAlpha = mAlpha;
+ deferredApply->mMode = mMode;
+ deferredApply->mDirtyRect.set(mDirtyRect);
+ deferredApply->mDisplayList = mDisplayList;
+ deferredApply->mSurfaceTexture = mSurfaceTexture;
+ deferredApply->mNeedsGLContextAttach = mNeedsGLContextAttach;
+ deferredApply->mUpdateTexImage = mUpdateTexImage;
+ deferredApply->setColorFilter(mColorFilter);
+ deferredApply->setTransform(mTransform);
+
+ mDisplayList = 0;
+ mDirtyRect.setEmpty();
+ mTransform = 0;
+ mNeedsGLContextAttach = false;
+ mUpdateTexImage = false;
+}
+
+} /* namespace uirenderer */
+} /* namespace android */