Consider avoiding conflicts with manual attributes #61
Description
maybe don't use these? Taken from https://www.opengl.org/sdk/docs/tutorials/ClockworkCoders/attributes.php
| gl_Vertex | 0 |
|---|---|
| gl_Normal | 2 |
| gl_Color | 3 |
| gl_SecondaryColor | 4 |
| gl_FogCoord | 5 |
| gl_MultiTexCoord0 | 8 |
| gl_MultiTexCoord1 | 9 |
| gl_MultiTexCoord2 | 10 |
| gl_MultiTexCoord3 | 11 |
| gl_MultiTexCoord4 | 12 |
| gl_MultiTexCoord5 | 13 |
| gl_MultiTexCoord6 | 14 |
| gl_MultiTexCoord7 | 15 |