Console crash (pressing tilda ~) with soft8 and soft32 renderer

```
XLEngine: /home/bcurtis/Workspace/Private/XLEngine/xlengine/render/triangleRasterizer/TriangleRasterizer.cpp:770: void TriangleRasterizer::DrawClippedNGon_Indexed(Driver3D_Soft*, VBO*, int, const uint16_t*, bool, int, PolygonData*): Assertion `A.x>>4 >= 0 && A.x>>4 <= DrawScanline::_nFrameWidth && A.y>>4 >= 0 && A.y>>4 <= DrawScanline::_nFrameHeight' failed.
Aborted (core dumped)
```