1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "GlLayer.h" 18 #include "LayerDrawable.h" 19 #include "VkLayer.h" 20 21 #include "GrBackendSurface.h" 22 #include "SkColorFilter.h" 23 #include "SkSurface.h" 24 #include "gl/GrGLTypes.h" 25 26 namespace android { 27 namespace uirenderer { 28 namespace skiapipeline { 29 30 void LayerDrawable::onDraw(SkCanvas* canvas) { 31 DrawLayer(canvas->getGrContext(), canvas, mLayer.get()); 32 } 33 34 bool LayerDrawable::DrawLayer(GrContext* context, SkCanvas* canvas, Layer* layer) { 35 // transform the matrix based on the layer 36 int saveCount = -1; 37 if (!layer->getTransform().isIdentity()) { 38 saveCount = canvas->save(); 39 SkMatrix transform; 40 layer->getTransform().copyTo(transform); 41 canvas->concat(transform); 42 } 43 44 sk_sp<SkImage> layerImage; 45 if (layer->getApi() == Layer::Api::OpenGL) { 46 GlLayer* glLayer = static_cast<GlLayer*>(layer); 47 GrGLTextureInfo externalTexture; 48 externalTexture.fTarget = glLayer->getRenderTarget(); 49 externalTexture.fID = glLayer->getTextureId(); 50 GrBackendTexture backendTexture(glLayer->getWidth(), glLayer->getHeight(), 51 kRGBA_8888_GrPixelConfig, externalTexture); 52 layerImage = SkImage::MakeFromTexture(context, backendTexture, kTopLeft_GrSurfaceOrigin, 53 kPremul_SkAlphaType, nullptr); 54 } else { 55 SkASSERT(layer->getApi() == Layer::Api::Vulkan); 56 VkLayer* vkLayer = static_cast<VkLayer*>(layer); 57 canvas->clear(SK_ColorGREEN); 58 layerImage = vkLayer->getImage(); 59 } 60 61 if (layerImage) { 62 SkPaint paint; 63 paint.setAlpha(layer->getAlpha()); 64 paint.setBlendMode(layer->getMode()); 65 paint.setColorFilter(sk_ref_sp(layer->getColorFilter())); 66 canvas->drawImage(layerImage, 0, 0, &paint); 67 } 68 // restore the original matrix 69 if (saveCount >= 0) { 70 canvas->restoreToCount(saveCount); 71 } 72 73 return layerImage; 74 } 75 76 }; // namespace skiapipeline 77 }; // namespace uirenderer 78 }; // namespace android 79
