wip: more uint typing fixes

Author: illwieckz

src/engine/renderer/glsl_source/lighttile_fp.glsl

@@ -59,7 +59,7 @@ uniform sampler2D u_DepthMap;
 uniform int u_lightLayer;
 uniform vec3 u_zFar;
 
-const int lightsPerLayer = 16;
+const uint lightsPerLayer = 16u;
 
 #define idxs_t uvec4
 
@@ -114,7 +114,7 @@ void main() {
 
 	idxs_t idxs = uvec4( 0, 0, 0, 0 );
 
-	uint lightCount = 0;
+	uint lightCount = 0u;
 
 	/* Dynamic lights are put into 4 layers of a 3D texture. Since checking if we already added some light is infeasible,
 	only process 1 / 4 of different lights for each layer, extra lights going into the last layer. This can fail to add some lights