3D Textures

Graphics and GPU Programming Programming

Started by Geometrian June 18, 2009 12:39 AM

3 comments, last by Geometrian 14 years, 10 months ago

1,813

Author

June 18, 2009 12:39 AM

Hello, I asked this question on IRC, with no success. I'm trying to get 3D texturing working. For simplicity, I'm starting with a white texture, which I tried creating with NumPy. The relevant calls:


data = numpy.ones((64*64*64*3)).tostring()
glTexImage3D(GL_TEXTURE_3D,0,GL_RGB,64,64,64,0,GL_RGB,GL_UNSIGNED_BYTE,data)

I'm drawing a box with appropriate 3D texture coordinates, and I'm getting the result:

Why isn't the box white? Thanks, -Geometrian

[size="1"]And a Unix user said rm -rf *.* and all was null and void...|There's no place like 127.0.0.1|The Application "Programmer" has unexpectedly quit. An error of type A.M. has occurred.
[size="2"]

dpadam450

2,403

June 18, 2009 01:09 AM

It just looks like your data is wrong. Seems like it is offset or something. I assume the texture is white?

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Geometrian

1,813

Author

June 18, 2009 01:21 AM

The texture data is created with line 1 of the code I provided. It creates an array of 1.0's 6433 long, and then converts it to a string.

Geometrian

1,813

Author

June 18, 2009 04:32 AM

The problem seems to be solved. After much deliberation, I found that

data = Numeric.array([255.0,255.0,255.0]*(64*64*64*3),"uint8")

seems to work.

Geometrian

1,813

Author

June 18, 2009 12:30 PM

Alrighty, one more thing. There seems to be a z-fighting-esque problem on the surface of the box. I'm pretty sure it's not z-fighting. What's going on? It's using a new texture that's 2 on a side.

Thanks,
-G

3D Textures

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