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  Can someone please explain why (1.0f,1.0f,1.0f) is not white?  (Read 1583 times)
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Offline Addictman

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« Posted 2007-08-29 08:30:03 »

Hi.

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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Used to be bleb


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

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

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« Reply #2 - Posted 2007-08-29 10:23:20 »

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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Java games rock!


« Reply #3 - Posted 2007-08-29 11:04:04 »

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 Member





« Reply #4 - Posted 2007-08-29 12:08:57 »

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

www.embege.com - personal website
webstart blendinspect - OpenGL BlendingModes visualization.
Offline Addictman

Senior Member


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Java games rock!


« Reply #5 - Posted 2007-08-29 14:42:15 »

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

JGO Knight


Medals: 34



« Reply #6 - Posted 2007-08-29 18:01:56 »

You can however also push and pop state attributes: http://www.talisman.org/opengl-1.1/Reference/glPushAttrib.html

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