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Strange Texture mapping problem

Started by LuckyOne Dec 3, 2005 at 2:23 PM 3 replies 800+ views

Original Post

Dec 3, 2005 at 2:23 PM

As you can see texture is not mapped corectly, why? Im using this code for 2d mode:


w = 640;
h = 480;
	Gl.glTexCoord2f(0.0f, 1.0f); Gl.glVertex2f(0, 0);
	Gl.glTexCoord2f(0.0f, 0.0f); Gl.glVertex2f(0, h);
	Gl.glTexCoord2f(1.0f, 0.0f); Gl.glVertex2f(w, h);
	Gl.glTexCoord2f(1.0f, 1.0f); Gl.glVertex2f(w, 0);

deavik

Dec 3, 2005 at 7:45 PM

I don't exactly see what's wrong (it's a spinning cube right?), but most probably the texturing coordinates have been flipped. So you coule try:

	Gl.glTexCoord2f(0.0f, 0.0f); Gl.glVertex2f(0, 0);	Gl.glTexCoord2f(0.0f, 1.0f); Gl.glVertex2f(0, h);	Gl.glTexCoord2f(1.0f, 1.0f); Gl.glVertex2f(w, h);	Gl.glTexCoord2f(1.0f, 0.0f); Gl.glVertex2f(w, 0);

LuckyOne

Dec 4, 2005 at 2:03 AM

The problem is that image should look like this:

Maybe the problem is in texture loading code?

Mercury

Dec 4, 2005 at 2:09 AM

It's probably the loading code, but check to make sure it's not the actual texture. Many a coder has been tricked by trying to debug working code when the data is borked. [razz]

LuckyOne

Dec 4, 2005 at 4:26 AM

Ha ha, just found a problem!

I forgot to parse picture. I just loaded it with all header & other pixels directly to GL.

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