how to avoid huge memory allocation when sending numpy array to vbo?

Asked May 14 '17 at 10:12

Active May 29 '17 at 08:35

Viewed 262 times

When I sent a big numpy array to the vbo, the memory goes up, up to a gig.

The shape of the array is (120000, 1), each vertex is x,y,z,r,g,b. The array can be bigger but whatever its size the allocation is disproportionate.

I added OpenGL.ERROR_ON_COPY = True but it doesn't trigger.

I use the vbo module from OpenGL.arrays the vbo line is self.vbo = vbo.VBO( vertices, usage=buffer.usage) . Nothing special AFAICT.

The only lead I have, is that I build and delete many vao/vbos as the mesh is filled and they are kept in memory (even if one uses VBO.delete(), which I do ).

Either I am doing something wrong or I hit a buggy use case.

Any idea on how to solve this ?

asked May 14 '17 at 10:12

LBarret

1,113
10
23

3

It may the absence of an [MCVE](http://stackoverflow.com/help/mcve) that makes your question less appealing for potential answerers. – Leon May 22 '17 at 09:32
1

Without a [mcve] this a game of trial and error – Amadeus May 23 '17 at 14:09
working on it but it takes a bit of time. – LBarret May 24 '17 at 12:35
1

May you please provide a minimal working code example ? – A. STEFANI May 26 '17 at 13:34

how to avoid huge memory allocation when sending numpy array to vbo?

0 Answers0