pyopengl-users

[PyOpenGL-Users] Float Texture Mipmapping

[Ian M. <geo...@gm...>]

Hi,

So, I've run into a problem where I need to create a mipmapped float32
texture.  My mipmapping code works fine for normal, 8 bit textures, but not
for 32 bit textures.  My code:

#data = numpy.ndarray, float32, and 500x500x3
gluBuild2DMipmaps(GL_TEXTURE_2D,GL_RGB,500,500,GL_RGB,GL_FLOAT,data)

...complains that the the 7th argument ("data") is the wrong type.  So . . .
what type should it be?

What to do?

Thanks,
Ian

Re: [PyOpenGL-Users] Float Texture Mipmapping

[Ian M. <geo...@gm...>]

Hi,

>From the docs, I found that:
gluBuild2DMipmaps( GLenum(target), GLint(internalFormat), GLsizei(width),
GLsizei(height), GLenum(format), GLenum(type), c_void_p(data) ) -> GLint

But trying:
c_void_p(data)

Results in a:
TypeError: cannot be converted to pointer.

The solution:
data.ctypes.data

Thanks for all the help, everyone . . .

Ian