Update lattice multiple times per frame

Controlled by `--lupf` _Lattice updates per frame_

MLUPS are now calculated and displayed.

While performance is still bad compared to a optimized GPU implementation (such
as [1] or [2]) this improves the situation.

[1]: https://tree.kummerlaender.eu/projects/symlbm_playground/
[2]: https://code.kummerlaender.eu/boltzgen/about/

1 files changed, 1 insertions, 1 deletions

diff --git a/src/shader/code/vertex.glsl b/src/shader/code/vertex.glsl
index 6ad54cf..10abf0c 100644
--- a/src/shader/code/vertex.glsl
+++ b/src/shader/code/vertex.glsl
@@ -58,7 +58,7 @@ float restrictedCurl(float curl) {
 	if ( abs(curl) < 1.0 ) {
 		return 0.5;
 	} else {
-		return 0.5 + 0.5*min(1.0, curl / (50*palette_factor));
+		return 0.5 + 0.5*min(1.0, curl / sq(palette_factor));
 	}
 }