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Fixup 

OpenGL: read screen pixels only works: AFTER_DRAW and BEFORE_END_FRAME
This commit is contained in:
halx99 2020-09-14 17:43:44 +08:00 committed by GitHub
parent c542037e7c
commit b956637c74
1 changed files with 9 additions and 14 deletions
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23
cocos/base/ccUtils.cpp
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@ -88,23 +88,18 @@ void captureScreen(std::function<void(RefPtr<Image>)> imageCallback)
auto renderer = director->getRenderer(); auto renderer = director->getRenderer();
auto eventDispatcher = director->getEventDispatcher(); auto eventDispatcher = director->getEventDispatcher();
s_captureScreenCommand.init((std::numeric_limits<float>::max)());
s_captureScreenCommand.func = [=]{
renderer->readPixels(nullptr, [=](const backend::PixelBufferDescriptor& pbd) {
if(pbd) {
auto image = utils::makeInstance<Image>(&Image::initWithRawData, pbd._data.getBytes(), pbd._data.getSize(), pbd._width, pbd._height, 8, false);
imageCallback(image);
}
else imageCallback(nullptr);
});
};
s_captureScreenListener = eventDispatcher->addCustomEventListener(Director::EVENT_AFTER_DRAW, [=](EventCustom* /*event*/) { s_captureScreenListener = eventDispatcher->addCustomEventListener(Director::EVENT_AFTER_DRAW, [=](EventCustom* /*event*/) {
eventDispatcher->removeEventListener(s_captureScreenListener); eventDispatcher->removeEventListener(s_captureScreenListener);
s_captureScreenListener = nullptr; s_captureScreenListener = nullptr;
renderer->addCommand(&s_captureScreenCommand); // !!!GL: AFTER_DRAW and BEFORE_END_FRAME
renderer->render(); renderer->readPixels(nullptr, [=](const backend::PixelBufferDescriptor& pbd) {
if (pbd) {
auto image = utils::makeInstance<Image>(&Image::initWithRawData, pbd._data.getBytes(), pbd._data.getSize(), pbd._width, pbd._height, 8, false);
imageCallback(image);
}
else imageCallback(nullptr);
});
}); });
} }