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Q&A How do I properly render a quad in OpenGL using a GL_TRIANGLE_STRIP primitive?

It looks like your vertexSizeBytes stride variable doesn't include uvSize. To figure things like this out, use this kind of logic: The shape of the image isn't a square, so something is wrong wit...

posted 1y ago by djm‭

Answer
#1: Initial revision by user avatar djm‭ · 2023-10-01T10:11:49Z (about 1 year ago)
It looks like your `vertexSizeBytes` stride variable doesn't include `uvSize`.  

To figure things like this out, use this kind of logic:

The shape of the image isn't a square, so something is wrong with the position coordinates.  Possible problems:  bad offset, bad stride, bad size, bad order of values (e.g. transposed matrix of values).  The offset and size look fine, but the stride doesn't.  

If that hadn't found the issue, I would have modified entries in `vertices` one at a time to see the effect on the output.