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  Can someone please explain why (1.0f,1.0f,1.0f) is not white?  (Read 1885 times)
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Offline Addictman

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« Posted 2007-08-29 06:30:03 »


I am getting slightly frustrated at a seemingly simple problem. I am drawing a set of lines with the color 1.0 1.0 1.0, expecting them to be white. But they're not. I am rendering several components with different z indexes, and the color of my lines change depending on where in my code I render them. Now I would understand why this happened, if setting my color multiplied it with some strange color settings already in my matrix, but I have checked, double checked, and triple checked that I dont. I even changed everything to  push,load,render,pop, to make sure any rendering occurs on a clear matrix. Yet the color varies, depending on when I render it. Am I missing something vital, or just overlooking the obvious? I did not want to write this on a board, ashamed as I am, but at this stage, I am getting too frustrated Wink
Offline ryanm

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« Reply #1 - Posted 2007-08-29 06:54:18 »

A stab in the dark, but have you glDisable( GL.GL_LIGHTING )?
Offline Addictman

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« Reply #2 - Posted 2007-08-29 08:23:20 »

I had not explicitly, but tried that now. To no avail, sadly. Enabling it turns my entire screen black, so I figure it was off by default Wink
Thanks for trying though!
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Offline Addictman

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« Reply #3 - Posted 2007-08-29 09:04:04 »

Ah. I had to disable Textures! That makes my color correct Wink

But I have to explicitly enable them again afterwards? It doesnt seem to be enough to pop the current matrix (which disabled them). Why is this so?
Offline emzic

Senior Devvie

« Reply #4 - Posted 2007-08-29 10:08:57 »

pushmatrix and popmatrix should have no influence on the current texture-state.
gl.glDisable(GL.GL_TEXTURE_2D); to disable texturing and
gl.glEnable(GL.GL_TEXTURE_2D); to enable texturing.
Offline Addictman

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Projects: 1

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« Reply #5 - Posted 2007-08-29 12:42:15 »

Right. My bad. I've been going blind over my own stuff lately. Thanks.
Offline cylab

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« Reply #6 - Posted 2007-08-29 16:01:56 »

You can however also push and pop state attributes:

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