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/*
* 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 "GlLayer.h"
#include "LayerDrawable.h"
#include "VkLayer.h"
#include "GrBackendSurface.h"
#include "SkColorFilter.h"
#include "SkSurface.h"
#include "gl/GrGLTypes.h"
namespace android {
namespace uirenderer {
namespace skiapipeline {
void LayerDrawable::onDraw(SkCanvas* canvas) {
DrawLayer(canvas->getGrContext(), canvas, mLayer.get());
}
bool LayerDrawable::DrawLayer(GrContext* context, SkCanvas* canvas, Layer* layer) {
// transform the matrix based on the layer
int saveCount = -1;
if (!layer->getTransform().isIdentity()) {
saveCount = canvas->save();
SkMatrix transform;
layer->getTransform().copyTo(transform);
canvas->concat(transform);
}
sk_sp<SkImage> layerImage;
if (layer->getApi() == Layer::Api::OpenGL) {
GlLayer* glLayer = static_cast<GlLayer*>(layer);
GrGLTextureInfo externalTexture;
externalTexture.fTarget = glLayer->getRenderTarget();
externalTexture.fID = glLayer->getTextureId();
GrBackendTexture backendTexture(glLayer->getWidth(), glLayer->getHeight(),
kRGBA_8888_GrPixelConfig, externalTexture);
layerImage = SkImage::MakeFromTexture(context, backendTexture, kTopLeft_GrSurfaceOrigin,
kPremul_SkAlphaType, nullptr);
} else {
SkASSERT(layer->getApi() == Layer::Api::Vulkan);
VkLayer* vkLayer = static_cast<VkLayer*>(layer);
canvas->clear(SK_ColorGREEN);
layerImage = vkLayer->getImage();
}
if (layerImage) {
SkPaint paint;
paint.setAlpha(layer->getAlpha());
paint.setBlendMode(layer->getMode());
paint.setColorFilter(sk_ref_sp(layer->getColorFilter()));
canvas->drawImage(layerImage, 0, 0, &paint);
}
// restore the original matrix
if (saveCount >= 0) {
canvas->restoreToCount(saveCount);
}
return layerImage;
}
}; // namespace skiapipeline
}; // namespace uirenderer
}; // namespace android
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