Renders objects with instancing; as many objects as possible are rendered with a single draw function, thus reducing the rendering time in levels with many similar objects f.i. for vegetation sprites. Instancing can increase the frame rate by up to 30%.
0 - No instancing (default).
1 - Sprite instancing.
2 - Model instancing (not yet supported).
d3d_instancing = 1; // activate sprite instancing