Re: [PyOpenGL-Users] PyOpenGL_accelerate / subclassed numpy arrays

[Nicolas P. R. <Nic...@in...>]

Ok, thanks for the explanation, I'll look into that then.

Nicolas



> On 08 Nov 2015, at 18:04, Chris Barker <chr...@no...> wrote:
> 
> On Sun, Nov 8, 2015 at 8:20 AM, Rob McMullen - NOAA Affiliate <rob...@no...> wrote:
> I know I've run into that problem when my VBO data was in recarray format. Defining the VBO as a view of the array in dtype=np.float32 format worked.
> 
> I haven't lloked an ANY of the relevant coce here, but this seems to indicae that  PyOpenGL_accelerate can't handle subclasses of ndarray -- which doesn't surprise me -- it's notoriously difficult to do that.
> 
> but the error:
> 
>  File "arraydatatype.pyx", line 57, in OpenGL_accelerate.arraydatatype.HandlerRegistry.c_lookup (src/arraydatatype.c:2230)
> TypeError: No array-type handler for type <class 'glumpy.gloo.buffer.VertexBuffer'> (value: VertexBuffer([151,  10,   1, ...,   0, 128,  63], ) registered
> 
> makes me think that arraydatatype.HandlerRegistry is where you need to put awareness of a new subclass.
> 
> or it needs to be fixed to recognize ndarray subclasses -- either by directly checking if it is a proper subclass, or by using the array protocol -- which I think is the __array__ method...
> 
> HTH,
> 
> -CHris
> 
> 
>  
> Rob
> 
> On Thu, Nov 5, 2015 at 11:08 PM, Nicolas P. Rougier <Nic...@in...> wrote:
> 
> I've made a numpy array subclass for a vertex buffer that works great with PyOpenGL but does not work if PyOpenGL_accelerate is installed, it complains about about missing handler:
> 
> File "/Users/rougier/Development/Public/glumpy/glumpy/gloo/buffer.py", line 75, in _update
>     gl.glBufferSubData(self.target, offset, nbytes, data)
>   File "latebind.pyx", line 44, in OpenGL_accelerate.latebind.Curry.__call__ (src/latebind.c:1201)
>   File "/usr/locaL/Cellar/python3/3.5.0/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/OpenGL/GL/VERSION/GL_1_5.py", line 122, in glBufferSubData
>     data = ArrayDatatype.asArray( data )
>   File "arraydatatype.pyx", line 174, in OpenGL_accelerate.arraydatatype.ArrayDatatype.asArray (src/arraydatatype.c:4221)
>   File "arraydatatype.pyx", line 57, in OpenGL_accelerate.arraydatatype.HandlerRegistry.c_lookup (src/arraydatatype.c:2230)
> TypeError: No array-type handler for type <class 'glumpy.gloo.buffer.VertexBuffer'> (value: VertexBuffer([151,  10,   1, ...,   0, 128,  63], ) registered
> 
> 
> Python: 3.5
> PyOpenGL: 3.1.0
> PyOpenGL_accelerate: 3.1.0
> The package I'm developing: http://glumpy.github.io
> 
> Any idea ?
> 
> Nicolas
> 
> 
> 
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> Christopher Barker, Ph.D.
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