LN_GLCORE:GLTRACE: Added new mode GLTRACE_OVERWRITE_FILL.
LN_GLCORE:GLTRACE: Added new mode GLTRACE_OVERWRITE_FILL.

- Adds shading below waveform.

VincentToups/lambdanative,VincentToups/lambdanative,VincentToups/lambdanative,VincentToups/lambdanative,VincentToups/lambdanative