hm, i might be completely off topic, but do you know about @matrixoutput 1 (and 2) attributes for jit.gl objects, which allow for export apparently ?

yes, I know that. If you look at the patch you will see that I'm using a gridshape with matrixoutput 1. I'm trying to extrude only a small part of the gridshape. Nobody?

hi there! i think that "you can't recognize the image" cause you map it onto a sphere. if you use a plane instead it pretty much works fine. also you don't need lighting and shading options in your source gridshape because you're using it with @matrixoutput 1 and you don't need [swiz z] after [in2] inside gen because you only got one plane there. look at this:

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thanks a lot for the help, but I want to use a sphere not a plane. I want to reduce the video size and extrude on a sphere. Is that possible?

When you extrude a shape, you're pulling the vertices along their surface normal. For a plane, this is the positive Z direction. For a sphere, it's the same direction as the vertex position (i.e. for a unit sphere, the position and the normal are exactly the same). For other shapes, like a cube, the extrusion direction would change depending on which face of the cube a particular vertex was on.

Here's a patch that extrudes a sphere and texture maps it with the video image.

wesley, you are gorgeous! thanks so much for that!!