Better ESm (but still not perfect)

src/Shaders/ShadersInclude/shadowsFragmentFunctions.fx

@@ -160,13 +160,13 @@
 			return 1.0;
 		}
 	
-		const float shadowStrength = 30.;
+		const float shadowStrength = 80.;
 		#ifndef SHADOWFULLFLOAT
 			float shadowMapSample = unpack(texture2D(shadowSampler, uv));
 			float esm = clamp(exp(-shadowStrength * shadowPixelDepth) * shadowMapSample - darkness, 0., 1.);
 		#else
 			float shadowMapSample = texture2D(shadowSampler, uv).x;
-			float esm = 1.0 - clamp(exp(-shadowStrength * shadowPixelDepth) * shadowMapSample - darkness, 0., 1.);
+			float esm = 1.0 - clamp(exp(shadowStrength * shadowPixelDepth) * shadowMapSample - darkness, 0., 1.);
 		#endif
 
 		// Apply fade out at frustum edge

src/Shaders/shadowMap.fragment.fx

@@ -46,8 +46,8 @@ void main(void)
 	depth += bias;
 
 #ifdef ESM
-	const float shadowStrength = 30.0;
-	depth = exp(shadowStrength * depth);
+	const float shadowStrength = 80.0;
+	depth = exp(-shadowStrength * depth);
 #endif
 
 #ifndef FULLFLOAT