Re: [PyOpenGL-Users] PyOpenGL_accelerate / subclassed numpy arrays
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mcfletch
From: Chris B. - N. F. <chr...@no...> - 2015-11-09 16:05:32
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It looks like accelerate is written in Cython. So you should be able to refactor it to use memoryviews, which I _think_ will work out of the box with proper nearest subclasses. -CHB > On Nov 9, 2015, at 5:22 AM, Nicolas P. Rougier <Nic...@in...> wrote: > > > 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 >> >> >> >> ------------------------------------------------------------------------------ >> _______________________________________________ >> PyOpenGL Homepage >> http://pyopengl.sourceforge.net >> _______________________________________________ >> PyOpenGL-Users mailing list >> PyO...@li... >> https://lists.sourceforge.net/lists/listinfo/pyopengl-users >> >> >> ------------------------------------------------------------------------------ >> >> _______________________________________________ >> PyOpenGL Homepage >> http://pyopengl.sourceforge.net >> _______________________________________________ >> PyOpenGL-Users mailing list >> PyO...@li... >> https://lists.sourceforge.net/lists/listinfo/pyopengl-users >> >> >> >> >> -- >> >> Christopher Barker, Ph.D. >> Oceanographer >> >> Emergency Response Division >> NOAA/NOS/OR&R (206) 526-6959 voice >> 7600 Sand Point Way NE (206) 526-6329 fax >> Seattle, WA 98115 (206) 526-6317 main reception >> >> Chr...@no... > |