Re: [PyOpenGL-Users] glTexSubImage2D data format

[Mohan G. <mg...@ca...>]

Hi Gijs,

>I usually use Numpy arrays for calls like this. So something like this:
>data = zeros(width*height, 'f')+0.5
>glTexSubImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, width, height, 
>GL_LUMINANCE, GL_FLOAT, data)

Thanks for the suggestion! Unfortunately I'm still getting an error... I'm 
sure I'm doing something stupid, but would you mind taking a look at it? (I 
can post the complete source code as well, but it's >100 lines, so I'm not 
sure whether it's all right to send it to the list... )

thanks again,
Mohan

Error:

Traceback (most recent call last):
  File "C:\Mohan\pygpu\test.py", line 110, in <module>
    glTexSubImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, 0, 0, width, height, 
GL_LUMINAN CE, GL_FLOAT, data)
  File "C:\Program 
Files\_Coding\Python26\lib\site-packages\OpenGL\wrapper.py", line 1284, in 
__call__
    return self.finalise()( *args, **named )
  File "C:\Program 
Files\_Coding\Python26\lib\site-packages\OpenGL\wrapper.py", line 681, in 
wrapperCall
    raise err
OpenGL.error.GLError: GLError(
        err = 1281,
        description = 'invalid value',
        baseOperation = glTexSubImage2D,
        pyArgs = (
                GL_TEXTURE_RECTANGLE_ARB,
                0,
                0,
                0,
                512,
                512,
                GL_LUMINANCE,
                GL_FLOAT,
                array([ 0.30000001,  0.30000001,  0.3...,
        ),
        cArgs = (
                GL_TEXTURE_RECTANGLE_ARB,
                0,
                0,
                0,
                512,
                512,
                GL_LUMINANCE,
                GL_FLOAT,
                array([ 0.30000001,  0.30000001,  0.3...,
        ),
        cArguments = (
                GL_TEXTURE_RECTANGLE_ARB,
                0,
                0,
                0,
                512,
                512,
                GL_LUMINANCE,
                GL_FLOAT,
                c_void_p(90243104),
        )
)