libgui: Added a vertex attribute for vertex color in ModelDrawable
Vertex colors specified in the model file (if any) are now availablevia the `aColor` vertex attribute in the ModelDrawable's VBO.
Also fixed a crash in test_glsandbox (where ModelDrawable is usedwith a null — i.e., default — Appearance).
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Added by skyjake almost 9 years ago
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libgui: Added a vertex attribute for vertex color in ModelDrawable
Vertex colors specified in the model file (if any) are now available
via the `aColor` vertex attribute in the ModelDrawable's VBO.
Also fixed a crash in test_glsandbox (where ModelDrawable is used
with a null — i.e., default — Appearance).