commit 23c38a9ed9c28a9fda438e7d30532aad7a3844f7
author Stan Iliev <stani@google.com> Thu Mar 23 00:12:50 2017 -0400
committer Stan Iliev <stani@google.com> Mon Mar 27 18:43:34 2017 -0400
tree 50c757670e0691327a730a8fc457f1cd7135594b
parent 4110be3a153daed2d62a549a36e9f92986addf29

Update VectorDrawables cache at frame start

Draw VectorDrawables in GPU backed surface. Render VD cache
at the beginning of the frame to avoid context switching.

Test: CTS graphics tests pass.
Change-Id: Ia14e0ec4049c3fa87f03547fbda44043bf8dd793

libs/hwui/pipeline/skia/SkiaPipeline.cpp

diff --git a/libs/hwui/pipeline/skia/SkiaPipeline.cpp b/libs/hwui/pipeline/skia/SkiaPipeline.cpp
index 10c1865..75f1adc 100644
--- a/libs/hwui/pipeline/skia/SkiaPipeline.cpp
+++ b/libs/hwui/pipeline/skia/SkiaPipeline.cpp
@@ -25,6 +25,7 @@
 #include <SkPictureRecorder.h>
 #include <SkPixelSerializer.h>
 #include <SkStream.h>
+#include "VectorDrawable.h"
 
 #include <unistd.h>
 
@@ -40,7 +41,9 @@
 
 Vector3 SkiaPipeline::mLightCenter = {FLT_MIN, FLT_MIN, FLT_MIN};
 
-SkiaPipeline::SkiaPipeline(RenderThread& thread) :  mRenderThread(thread) { }
+SkiaPipeline::SkiaPipeline(RenderThread& thread) :  mRenderThread(thread) {
+    mVectorDrawables.reserve(30);
+}
 
 TaskManager* SkiaPipeline::getTaskManager() {
     return &mTaskManager;
@@ -74,6 +77,7 @@
         const BakedOpRenderer::LightInfo& lightInfo) {
     updateLighting(lightGeometry, lightInfo);
     ATRACE_NAME("draw layers");
+    renderVectorDrawableCache();
     renderLayersImpl(*layerUpdateQueue, opaque);
     layerUpdateQueue->clear();
 }
@@ -176,10 +180,35 @@
     }
 };
 
+void SkiaPipeline::renderVectorDrawableCache() {
+    //render VectorDrawables into offscreen buffers
+    for (auto vd : mVectorDrawables) {
+        sk_sp<SkSurface> surface;
+        if (!vd->canReuseSurface()) {
+#ifndef ANDROID_ENABLE_LINEAR_BLENDING
+            sk_sp<SkColorSpace> colorSpace = nullptr;
+#else
+            sk_sp<SkColorSpace> colorSpace = SkColorSpace::MakeSRGB();
+#endif
+            int scaledWidth = SkScalarCeilToInt(vd->properties().getScaledWidth());
+            int scaledHeight = SkScalarCeilToInt(vd->properties().getScaledHeight());
+            SkImageInfo info = SkImageInfo::MakeN32(scaledWidth, scaledHeight,
+                    kPremul_SkAlphaType, colorSpace);
+            SkASSERT(mRenderThread.getGrContext() != nullptr);
+            surface = SkSurface::MakeRenderTarget(mRenderThread.getGrContext(), SkBudgeted::kYes,
+                    info);
+        }
+        vd->updateCache(surface);
+    }
+    mVectorDrawables.clear();
+}
+
 void SkiaPipeline::renderFrame(const LayerUpdateQueue& layers, const SkRect& clip,
         const std::vector<sp<RenderNode>>& nodes, bool opaque, const Rect &contentDrawBounds,
         sk_sp<SkSurface> surface) {
 
+    renderVectorDrawableCache();
+
     // draw all layers up front
     renderLayersImpl(layers, opaque);