rendertexture's savetoFile problem

[reasonMix]

when draw a label to the render texture and call the savetoFile to create the png file.the png file have white border on ios platform. because the label use ALPHA_NON_PREMULTIPLIED blend mode. and on ios platform the image-ios.mm savetoFile only use the kCGImageAlphaPremultipliedLast flag

[ricardoquesada]

thanks. could you post the code to reproduce it? thanks.

[reasonMix]

@ricardoquesada
local text = cc.Label:createWithTTF('hello world','font/yours.ttf',40)

local target = cc.RenderTexture:create(winSize.width, winSize.height, 2)
target:beginWithClear(0,0,0,0)
text:setPosition(winSize.width / 2,winSize.height/2)
text:visit()
target:endToLua()
target:saveToFile('aaa.png',1)

[ricardoquesada]

Thanks. But I couldn't reproduce it. The image that I got on an iPhone is the following, and it seems to be Ok. is that right? I'm using C++ code instead of Lua though.

UPDATE: Image had the letters in white... generating a new one in red (see below)

[reasonMix]

@ricardoquesada where is the png file,i can't seen it

[ricardoquesada]

@reasonMix Uploading it again... In case it doesn't work, this is the test case that I created:
#16180

I couldn't find any white border in this image.

[reasonMix]

@ricardoquesada please paste your code,do you create the label with ttf?

[ricardoquesada]

@reasonMix: the code is here, in this Pull Request: #16180

[reasonMix]

@ricardoquesada i am wrong,in mac platform,the png file will have a black border

[ricardoquesada]

@reasonMix this is the image from the Mac:

[reasonMix]

@ricardoquesada use the white color，will see the black border