drawLine Transparencies « cocos2d for iPhone

drawLine Transparencies

(3 posts) (2 voices)

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MrCoCheese
Member

Hi,

I have just updated from 0.73 to 0.8, I have noticed that when I set the transparency on drawLine the colour remains fully opaque.

glEnable(GL_LINE_SMOOTH);
glLineWidth(2);
glColor4ub(255, 255, 255,128);
drawLine(ccp(160,480),ccp(0,0));

I have tried this on the drawPrimitivesTest example in 0.8 and it is doing the same but it works fine in 0.73.

Anyone else having the same problems?

Posted 2 years ago #
thaeez
Member

Hi MrCoCheese,

In your draw method, try adding:

glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);

before the drawLine call and:

glBlendFunc(GL_ONE,GL_ONE_MINUS_SRC_ALPHA);

after the call.

Good luck.

Mike

Posted 2 years ago #
MrCoCheese
Member

That fixed it!!!
Thanks for that :)

Posted 2 years ago #

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