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Re: OpenGL texture issues [message #40716 is a reply to message #40711]

Sun, 08 September 2013 12:26

unodgs
Messages: 1367
Registered: November 2005
Location: Poland

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mirek wrote on Sun, 08 September 2013 01:35

mirek wrote on Sun, 08 September 2013 01:30

- it looks to like OpenGL expects textures in non-premultiplies format. In that case we need to unmultiply Image, right? (I have not seen any such thing in CoreGL/resources.cpp, but I might be missing something).

Ha, 2 minutes after posting, I have found in CoreGL

	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

I have to admit I didn't even think about it Smile

But docs says it is exactly prempultiplied mode.

If it comes to textures of power of 2 it is true for opengl es - so for all mobile devices. On desktop it is not required.

[Updated on: Sun, 08 September 2013 12:26]

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