| /* |
| * Copyright (C) 2016 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 "RenderNodeDrawable.h" |
| #include <SkPaintFilterCanvas.h> |
| #include "RenderNode.h" |
| #include "SkiaDisplayList.h" |
| #include "utils/TraceUtils.h" |
| |
| #include <optional> |
| |
| namespace android { |
| namespace uirenderer { |
| namespace skiapipeline { |
| |
| RenderNodeDrawable::RenderNodeDrawable(RenderNode* node, SkCanvas* canvas, bool composeLayer, |
| bool inReorderingSection) |
| : mRenderNode(node) |
| , mRecordedTransform(canvas->getTotalMatrix()) |
| , mComposeLayer(composeLayer) |
| , mInReorderingSection(inReorderingSection) {} |
| |
| RenderNodeDrawable::~RenderNodeDrawable() { |
| // Just here to move the destructor into the cpp file where we can access RenderNode. |
| |
| // TODO: Detangle the header nightmare. |
| } |
| |
| void RenderNodeDrawable::drawBackwardsProjectedNodes(SkCanvas* canvas, |
| const SkiaDisplayList& displayList, |
| int nestLevel) const { |
| LOG_ALWAYS_FATAL_IF(0 == nestLevel && !displayList.mProjectionReceiver); |
| for (auto& child : displayList.mChildNodes) { |
| const RenderProperties& childProperties = child.getNodeProperties(); |
| |
| // immediate children cannot be projected on their parent |
| if (childProperties.getProjectBackwards() && nestLevel > 0) { |
| SkAutoCanvasRestore acr2(canvas, true); |
| // Apply recorded matrix, which is a total matrix saved at recording time to avoid |
| // replaying all DL commands. |
| canvas->concat(child.getRecordedMatrix()); |
| child.drawContent(canvas); |
| } |
| |
| // skip walking sub-nodes if current display list contains a receiver with exception of |
| // level 0, which is a known receiver |
| if (0 == nestLevel || !displayList.containsProjectionReceiver()) { |
| SkAutoCanvasRestore acr(canvas, true); |
| SkMatrix nodeMatrix; |
| mat4 hwuiMatrix(child.getRecordedMatrix()); |
| auto childNode = child.getRenderNode(); |
| childNode->applyViewPropertyTransforms(hwuiMatrix); |
| hwuiMatrix.copyTo(nodeMatrix); |
| canvas->concat(nodeMatrix); |
| SkiaDisplayList* childDisplayList = static_cast<SkiaDisplayList*>( |
| (const_cast<DisplayList*>(childNode->getDisplayList()))); |
| if (childDisplayList) { |
| drawBackwardsProjectedNodes(canvas, *childDisplayList, nestLevel + 1); |
| } |
| } |
| } |
| } |
| |
| static void clipOutline(const Outline& outline, SkCanvas* canvas, const SkRect* pendingClip) { |
| Rect possibleRect; |
| float radius; |
| |
| /* To match the existing HWUI behavior we only supports rectangles or |
| * rounded rectangles; passing in a more complicated outline fails silently. |
| */ |
| if (!outline.getAsRoundRect(&possibleRect, &radius)) { |
| if (pendingClip) { |
| canvas->clipRect(*pendingClip); |
| } |
| return; |
| } |
| |
| SkRect rect = possibleRect.toSkRect(); |
| if (radius != 0.0f) { |
| if (pendingClip && !pendingClip->contains(rect)) { |
| canvas->clipRect(*pendingClip); |
| } |
| canvas->clipRRect(SkRRect::MakeRectXY(rect, radius, radius), SkClipOp::kIntersect, true); |
| } else { |
| if (pendingClip) { |
| (void)rect.intersect(*pendingClip); |
| } |
| canvas->clipRect(rect); |
| } |
| } |
| |
| const RenderProperties& RenderNodeDrawable::getNodeProperties() const { |
| return mRenderNode->properties(); |
| } |
| |
| void RenderNodeDrawable::onDraw(SkCanvas* canvas) { |
| // negative and positive Z order are drawn out of order, if this render node drawable is in |
| // a reordering section |
| if ((!mInReorderingSection) || MathUtils::isZero(mRenderNode->properties().getZ())) { |
| this->forceDraw(canvas); |
| } |
| } |
| |
| class MarkDraw { |
| public: |
| explicit MarkDraw(SkCanvas& canvas, RenderNode& node) : mCanvas(canvas), mNode(node) { |
| if (CC_UNLIKELY(Properties::skpCaptureEnabled)) { |
| mNode.markDrawStart(mCanvas); |
| } |
| } |
| ~MarkDraw() { |
| if (CC_UNLIKELY(Properties::skpCaptureEnabled)) { |
| mNode.markDrawEnd(mCanvas); |
| } |
| } |
| |
| private: |
| SkCanvas& mCanvas; |
| RenderNode& mNode; |
| }; |
| |
| void RenderNodeDrawable::forceDraw(SkCanvas* canvas) const { |
| RenderNode* renderNode = mRenderNode.get(); |
| MarkDraw _marker{*canvas, *renderNode}; |
| |
| // We only respect the nothingToDraw check when we are composing a layer. This |
| // ensures that we paint the layer even if it is not currently visible in the |
| // event that the properties change and it becomes visible. |
| if ((mProjectedDisplayList == nullptr && !renderNode->isRenderable()) || |
| (renderNode->nothingToDraw() && mComposeLayer)) { |
| return; |
| } |
| |
| SkiaDisplayList* displayList = (SkiaDisplayList*)renderNode->getDisplayList(); |
| |
| SkAutoCanvasRestore acr(canvas, true); |
| const RenderProperties& properties = this->getNodeProperties(); |
| // pass this outline to the children that may clip backward projected nodes |
| displayList->mProjectedOutline = |
| displayList->containsProjectionReceiver() ? &properties.getOutline() : nullptr; |
| if (!properties.getProjectBackwards()) { |
| drawContent(canvas); |
| if (mProjectedDisplayList) { |
| acr.restore(); // draw projected children using parent matrix |
| LOG_ALWAYS_FATAL_IF(!mProjectedDisplayList->mProjectedOutline); |
| const bool shouldClip = mProjectedDisplayList->mProjectedOutline->getPath(); |
| SkAutoCanvasRestore acr2(canvas, shouldClip); |
| canvas->setMatrix(mProjectedDisplayList->mParentMatrix); |
| if (shouldClip) { |
| canvas->clipPath(*mProjectedDisplayList->mProjectedOutline->getPath()); |
| } |
| drawBackwardsProjectedNodes(canvas, *mProjectedDisplayList); |
| } |
| } |
| displayList->mProjectedOutline = nullptr; |
| } |
| |
| static bool layerNeedsPaint(const LayerProperties& properties, float alphaMultiplier, |
| SkPaint* paint) { |
| paint->setFilterQuality(kLow_SkFilterQuality); |
| if (alphaMultiplier < 1.0f || properties.alpha() < 255 || |
| properties.xferMode() != SkBlendMode::kSrcOver || properties.getColorFilter() != nullptr || |
| properties.getImageFilter() != nullptr) { |
| paint->setAlpha(properties.alpha() * alphaMultiplier); |
| paint->setBlendMode(properties.xferMode()); |
| paint->setColorFilter(sk_ref_sp(properties.getColorFilter())); |
| paint->setImageFilter(sk_ref_sp(properties.getImageFilter())); |
| return true; |
| } |
| return false; |
| } |
| |
| class AlphaFilterCanvas : public SkPaintFilterCanvas { |
| public: |
| AlphaFilterCanvas(SkCanvas* canvas, float alpha) : SkPaintFilterCanvas(canvas), mAlpha(alpha) {} |
| |
| protected: |
| bool onFilter(SkPaint& paint) const override { |
| paint.setAlpha((uint8_t)paint.getAlpha() * mAlpha); |
| return true; |
| } |
| void onDrawDrawable(SkDrawable* drawable, const SkMatrix* matrix) override { |
| // We unroll the drawable using "this" canvas, so that draw calls contained inside will |
| // get their alpha applied. The default SkPaintFilterCanvas::onDrawDrawable does not unroll. |
| drawable->draw(this, matrix); |
| } |
| |
| private: |
| float mAlpha; |
| }; |
| |
| void RenderNodeDrawable::drawContent(SkCanvas* canvas) const { |
| RenderNode* renderNode = mRenderNode.get(); |
| float alphaMultiplier = 1.0f; |
| const RenderProperties& properties = renderNode->properties(); |
| |
| // If we are drawing the contents of layer, we don't want to apply any of |
| // the RenderNode's properties during this pass. Those will all be applied |
| // when the layer is composited. |
| if (mComposeLayer) { |
| setViewProperties(properties, canvas, &alphaMultiplier); |
| } |
| SkiaDisplayList* displayList = (SkiaDisplayList*)mRenderNode->getDisplayList(); |
| displayList->mParentMatrix = canvas->getTotalMatrix(); |
| |
| // TODO should we let the bound of the drawable do this for us? |
| const SkRect bounds = SkRect::MakeWH(properties.getWidth(), properties.getHeight()); |
| bool quickRejected = properties.getClipToBounds() && canvas->quickReject(bounds); |
| if (!quickRejected) { |
| SkiaDisplayList* displayList = (SkiaDisplayList*)renderNode->getDisplayList(); |
| const LayerProperties& layerProperties = properties.layerProperties(); |
| // composing a hardware layer |
| if (renderNode->getLayerSurface() && mComposeLayer) { |
| SkASSERT(properties.effectiveLayerType() == LayerType::RenderLayer); |
| SkPaint paint; |
| layerNeedsPaint(layerProperties, alphaMultiplier, &paint); |
| |
| // surfaces for layers are created on LAYER_SIZE boundaries (which are >= layer size) so |
| // we need to restrict the portion of the surface drawn to the size of the renderNode. |
| SkASSERT(renderNode->getLayerSurface()->width() >= bounds.width()); |
| SkASSERT(renderNode->getLayerSurface()->height() >= bounds.height()); |
| |
| // If SKP recording is active save an annotation that indicates this drawImageRect |
| // could also be rendered with the commands saved at ID associated with this node. |
| if (CC_UNLIKELY(Properties::skpCaptureEnabled)) { |
| canvas->drawAnnotation(bounds, String8::format( |
| "SurfaceID|%" PRId64, renderNode->uniqueId()).c_str(), nullptr); |
| } |
| canvas->drawImageRect(renderNode->getLayerSurface()->makeImageSnapshot(), bounds, |
| bounds, &paint); |
| |
| if (!renderNode->getSkiaLayer()->hasRenderedSinceRepaint) { |
| renderNode->getSkiaLayer()->hasRenderedSinceRepaint = true; |
| if (CC_UNLIKELY(Properties::debugLayersUpdates)) { |
| SkPaint layerPaint; |
| layerPaint.setColor(0x7f00ff00); |
| canvas->drawRect(bounds, layerPaint); |
| } else if (CC_UNLIKELY(Properties::debugOverdraw)) { |
| // Render transparent rect to increment overdraw for repaint area. |
| // This can be "else if" because flashing green on layer updates |
| // will also increment the overdraw if it happens to be turned on. |
| SkPaint transparentPaint; |
| transparentPaint.setColor(SK_ColorTRANSPARENT); |
| canvas->drawRect(bounds, transparentPaint); |
| } |
| } |
| } else { |
| if (alphaMultiplier < 1.0f) { |
| // Non-layer draw for a view with getHasOverlappingRendering=false, will apply |
| // the alpha to the paint of each nested draw. |
| AlphaFilterCanvas alphaCanvas(canvas, alphaMultiplier); |
| displayList->draw(&alphaCanvas); |
| } else { |
| displayList->draw(canvas); |
| } |
| } |
| } |
| } |
| |
| void RenderNodeDrawable::setViewProperties(const RenderProperties& properties, SkCanvas* canvas, |
| float* alphaMultiplier) { |
| if (properties.getLeft() != 0 || properties.getTop() != 0) { |
| canvas->translate(properties.getLeft(), properties.getTop()); |
| } |
| if (properties.getStaticMatrix()) { |
| canvas->concat(*properties.getStaticMatrix()); |
| } else if (properties.getAnimationMatrix()) { |
| canvas->concat(*properties.getAnimationMatrix()); |
| } |
| if (properties.hasTransformMatrix()) { |
| if (properties.isTransformTranslateOnly()) { |
| canvas->translate(properties.getTranslationX(), properties.getTranslationY()); |
| } else { |
| canvas->concat(*properties.getTransformMatrix()); |
| } |
| } |
| const bool isLayer = properties.effectiveLayerType() != LayerType::None; |
| int clipFlags = properties.getClippingFlags(); |
| if (properties.getAlpha() < 1) { |
| if (isLayer) { |
| clipFlags &= ~CLIP_TO_BOUNDS; // bounds clipping done by layer |
| } |
| if (CC_LIKELY(isLayer || !properties.getHasOverlappingRendering())) { |
| *alphaMultiplier = properties.getAlpha(); |
| } else { |
| // savelayer needed to create an offscreen buffer |
| Rect layerBounds(0, 0, properties.getWidth(), properties.getHeight()); |
| if (clipFlags) { |
| properties.getClippingRectForFlags(clipFlags, &layerBounds); |
| clipFlags = 0; // all clipping done by savelayer |
| } |
| SkRect bounds = SkRect::MakeLTRB(layerBounds.left, layerBounds.top, layerBounds.right, |
| layerBounds.bottom); |
| canvas->saveLayerAlpha(&bounds, (int)(properties.getAlpha() * 255)); |
| } |
| |
| if (CC_UNLIKELY(ATRACE_ENABLED() && properties.promotedToLayer())) { |
| // pretend alpha always causes savelayer to warn about |
| // performance problem affecting old versions |
| ATRACE_FORMAT("alpha caused saveLayer %dx%d", properties.getWidth(), |
| properties.getHeight()); |
| } |
| } |
| |
| const SkRect* pendingClip = nullptr; |
| SkRect clipRect; |
| |
| if (clipFlags) { |
| Rect tmpRect; |
| properties.getClippingRectForFlags(clipFlags, &tmpRect); |
| clipRect = tmpRect.toSkRect(); |
| pendingClip = &clipRect; |
| } |
| |
| if (properties.getRevealClip().willClip()) { |
| canvas->clipPath(*properties.getRevealClip().getPath(), SkClipOp::kIntersect, true); |
| } else if (properties.getOutline().willClip()) { |
| clipOutline(properties.getOutline(), canvas, pendingClip); |
| pendingClip = nullptr; |
| } |
| |
| if (pendingClip) { |
| canvas->clipRect(*pendingClip); |
| } |
| } |
| |
| } // namespace skiapipeline |
| } // namespace uirenderer |
| } // namespace android |