Warn if trying to set vertex attrib divisor on unsupported backend

vispy · Apr 16, 2024 · e27e089 · e27e089
1 parent 6bc8d52
commit e27e089
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/vispy/gloo/glir.py b/vispy/gloo/glir.py
@@ -1283,7 +1283,13 @@ def _pre_draw(self):
                 gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo_handle)
                 gl.glEnableVertexAttribArray(attr_handle)
                 func(attr_handle, *args)
-                gl.glVertexAttribDivisor(attr_handle, divisor or 0)
+                if hasattr(gl, "glVertexAttribDivisor"):
+                    gl.glVertexAttribDivisor(attr_handle, divisor or 0)
+                elif divisor is not None:
+                    logger.warning(
+                        'Instanced rendering not supported by'
+                        f'backend {gl.current_backend.__name__}'
+                    )
             else:
                 gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
                 gl.glDisableVertexAttribArray(attr_handle)