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Merge pull request #10985 from dabingnn/v3_fixRenderTextureCrash 

fix crash problem when switch to a new scene after call RenderTexture::s...
This commit is contained in:
minggo 2015-03-19 20:00:31 +08:00
parent 1aec5a9508 8b04a15ee8
commit f3e518b103
2 changed files with 5 additions and 1 deletions
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3
cocos/2d/CCRenderTexture.h
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@ -107,6 +107,9 @@ public:
/** saves the texture into a file. The format could be JPG or PNG. The file will be saved in the Documents folder. /** saves the texture into a file. The format could be JPG or PNG. The file will be saved in the Documents folder.
Returns true if the operation is successful. Returns true if the operation is successful.
Notes: since v3.x, saveToFile will generate a custum command, which will be called in the following render->render().
So if this function is called in a event handler, the actual save file will be called in the next frame. If we switch to a different scene, the game will crash.
To solve this, add Director::getInstance()->getRenderer()->render(); after this function.
*/ */
bool saveToFile(const std::string& filename, Image::Format format, bool isRGBA = true, std::function<void (RenderTexture*, const std::string&)> callback = nullptr); bool saveToFile(const std::string& filename, Image::Format format, bool isRGBA = true, std::function<void (RenderTexture*, const std::string&)> callback = nullptr);

3
tests/cpp-tests/Classes/RenderTextureTest/RenderTextureTest.cpp
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@ -146,7 +146,8 @@ void RenderTextureSave::saveImage(cocos2d::Ref *sender)
}; };
_target->saveToFile(png, Image::Format::PNG, true, callback); _target->saveToFile(png, Image::Format::PNG, true, callback);
//Add this function to avoid crash if we switch to a new scene.
Director::getInstance()->getRenderer()->render();
CCLOG("Image saved %s", png); CCLOG("Image saved %s", png);
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