Re: [PyOpenGL-Users] Textures on Bad Hardware

[Dirk R. <dir...@gm...>]

	Hi Ian,

On 07/31/2010 11:06 AM, Ian Mallett wrote:
>>
> Yes, although programs without extensions were crashing.

OK.

> Of the errors, the only one that seems even possible is:
> GL_INVALID_OPERATION is generated if a non-zero buffer object name is bound
> to the GL_PIXEL_UNPACK_BUFFER target and the data would be unpacked from the
> buffer object such that the memory reads required would exceed the data
> store size.
> It seems strange, though, because other programs don't seem to have a
> problem.  Here's the graphics "card" he has:
> http://www.notebookcheck.net/Intel-Graphics-Media-Accelerator-950.2177.0.html

That is a pretty unusual error, so that doesn't sound very probable, yes.

> My gut feeling would guess you're using a texture format that the card
>> doesn't know, try using the generic GL_RGB/GL_RGBA instead of the
>> bit-specific ones.
>>
> I am.

OK.

>> We might be able to help you better if we could see your actual code.
>>
> I was trying to avoid it, as it is a general class of functions that are
> failing.  Some of my newer code is also too flexible to be immediately
> readable.  Here's some really old code that fails:
> def Texture(surface,filters):
>      data = pygame.image.tostring(surface,"RGBA",True)
>      width,height = surface.get_size()
...
>
> glTexImage2D(GL_TEXTURE_2D,0,GL_RGBA,width,height,0,GL_RGBA,GL_UNSIGNED_BYTE,data)
>      return texture

All of that looks pretty straightforward. The only thing I can think of, but 
that should give a different error, is textures that are not power-of-two size. 
What are the sizes of your textures?

	Dirk