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Re: OpenGL texture issues [message #40711 is a reply to message #40710]

Sun, 08 September 2013 07:35

mirek is currently offline

mirek
Messages: 14256
Registered: November 2005

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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);

which, AFAIK, should exactly switch OpenGL to premultiplied alpha mode, right? Smile

Smile

Mirek

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[Message index]

		OpenGL texture issues By: mirek on Sun, 08 September 2013 07:30
		Re: OpenGL texture issues By: mirek on Sun, 08 September 2013 07:35
		Re: OpenGL texture issues By: unodgs on Sun, 08 September 2013 12:26
		Re: OpenGL texture issues By: mirek on Sun, 08 September 2013 19:05
		Re: OpenGL texture issues By: raxvan on Fri, 08 November 2013 15:06

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