surprise commit

new stuff

reworked clouds, general lighting, end and nether shaders still WIP

lighting is more balanced in general.

shaders/lib/diffuse_lighting.glsl

@@ -0,0 +1,61 @@
+// in this here file im doing all the lighting for sunlight, ambient light, torches, for solids and translucents.
+
+//// OVERWORLD ////
+
+vec3 DoAmbientLighting (vec3 SkyColor, vec3 TorchColor, vec2 Lightmap, float skyLightDir){
+    // Lightmap.x = 0.0;
+    // Lightmap.y = 1.0;
+
+    SkyColor = SkyColor * 2.0 * ambient_brightness;
+
+
+	vec3 TorchLight = TorchColor * pow(1.0-pow(1.0-clamp(Lightmap.x,0.0,1.0) ,0.1),2);
+    TorchLight = exp(TorchLight * 30) - 1.0;
+
+
+    // vec3 SkyLight = max((SkyColor * 8./150./3.) * pow(Lightmap.y,3.0) , vec3(0.2,0.4,1.0) * (MIN_LIGHT_AMOUNT*0.01)) ;
+    vec3 SkyLight = max((SkyColor * 8./150./3.) * pow(Lightmap.y,3.0),0.0) ;
+
+    
+    return   SkyLight * skyLightDir + TorchLight;
+}
+
+vec3 DoDirectLighting(vec3 SunColor, float Shadow, float NdotL, float SubsurfaceScattering){
+
+    // vec3 SunLight = max(NdotL * Shadow, SubsurfaceScattering) * SunColor;
+    vec3 SunLight = NdotL * Shadow * SunColor;
+    
+    return SunLight;
+}
+
+
+//// NETHER ////
+vec3 DoAmbientLighting_Nether(vec3 FogColor, vec3 TorchColor, float Lightmap, vec3 Normal, vec3 np3, vec3 WorldPos){
+
+    vec3 TorchLight = TorchColor * clamp(pow(Lightmap,3.0),0.0,1.0);
+
+
+
+    vec3 LavaGlow = vec3(TORCH_R,TORCH_G,TORCH_B);
+    LavaGlow *= pow(clamp(1.0-max(Normal.y,0.0) + dot(Normal,np3),0.0,1.0),3.0);
+	LavaGlow *= clamp(exp2(-max((WorldPos.y - 50.0) / 5,0.0)),0.0,1.0);
+    LavaGlow *= pow(Lightmap,0.2);
+
+    vec3 AmbientLight =  vec3(0.1) + FogColor*clamp(1.1 + dot(Normal,np3),0.0,1.0);
+
+    return  AmbientLight + TorchLight + LavaGlow;
+}
+//// END ////
+vec3 DoAmbientLighting_End(vec3 FogColor, vec3 TorchColor, float Lightmap, vec3 Normal, vec3 np3){
+
+    // vec3 TorchLight = TorchColor * clamp(pow(Lightmap,3.0),0.0,1.0);
+	vec3 TorchLight = TorchColor * pow(1.0-pow(1.0-clamp(Lightmap,0.0,1.0) ,0.1),2);
+    TorchLight = exp(TorchLight * 30) - 1.0;
+
+
+    FogColor =  (FogColor / pow(0.00001 + dot(FogColor,vec3(0.3333)),1.0) ) * 0.1;
+    // vec3 AmbientLight =  sqrt( clamp(1.25 + dot(Normal,np3),0.0,1.0)) * (vec3(0.5,0.75,1.0) * 0.05);
+    vec3 AmbientLight =  sqrt( clamp(1.25 + dot(Normal,np3),0.0,1.0)*0.5) * FogColor;
+
+    return TorchLight + AmbientLight;
+}