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  [SLICK] clampTexture  (Read 1108 times)
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Offline MonsterOfCookie

Junior Devvie


Medals: 2


Gar


« Posted 2011-06-19 15:59:05 »

Hi,

Hope I can post in this one about slick (based on the fact it is a LWJGL wrapper)

I was just wondering, I did try Google first, what is meant by clampTexture on the spritesheet class.

The underlying code is:

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if (GLContext.getCapabilities().GL_EXT_texture_mirror_clamp) {
        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, EXTTextureMirrorClamp.GL_MIRROR_CLAMP_TO_EDGE_EXT);
        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T, EXTTextureMirrorClamp.GL_MIRROR_CLAMP_TO_EDGE_EXT);
} else {
         GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, GL11.GL_CLAMP);
         GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T, GL11.GL_CLAMP);
}


What does it do and why is it needed?

Cheers

Cookie

Offline cylab

JGO Ninja


Medals: 55



« Reply #1 - Posted 2011-06-19 20:35:18 »

http://en.wikipedia.org/wiki/Clamping_%28graphics%29

Mathias - I Know What [you] Did Last Summer!
Offline MonsterOfCookie

Junior Devvie


Medals: 2


Gar


« Reply #2 - Posted 2011-06-19 22:29:51 »

Thanks!

Was kinda hoping for a better explanation. E.g. in a 2D environment it is a performance killer etc (it may not be )

Cookie

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