1x1 Scissor Rect

The 1x1 Scissor Rect override mode bypasses pixel processing from the rendering pipeline. If the frame rate does not increase after enabling this override, then a complex geometry or vertex shader is a bottleneck. In this case, you can use the Wireframe override mode to check whether the geometry is complex. If it is not, then the vertex shader is the bottleneck.

However, the implementation of this override mode is driver/graphics hardware vendor specific. Therefore, the effect of this override depends upon whether scissoring on your device occurs prior to or after the pixel shader stage.

Normal Picture

1x1 Scissor Rect

For more complete information about compiler optimizations, see our Optimization Notice.