tweak some cloud lighting a bit. also tweak VL biome fog a little

shaders/composite1.fsh

@@ -840,6 +840,7 @@ void main() {
 		vec4 cloud = texture2D_bicubic(colortex0,texcoord*CLOUDS_QUALITY);
 		background = background*cloud.a + cloud.rgb;
 
+
 		gl_FragData[0].rgb = clamp(fp10Dither(background ,triangularize(noise)),0.0,65000.);
 	#endif
 	}else{//land

shaders/lib/ROBOBO_sky.glsl

@@ -110,7 +110,7 @@ vec3 calculateAtmosphere(vec3 background, vec3 viewVector, vec3 upVector, vec3 s
 	vec3  increment = viewVector * stepSize;
 	vec3  position  = viewVector * sd.x + viewPosition;
 	position += increment * (0.34*noise);
-	vec2 phaseSun  = sky_phase(dot(viewVector, sunVector ), sky_mieg);
+	vec2 phaseSun  = sky_phase(dot(viewVector, sunVector ), sky_mieg) ;
 	vec2 phaseMoon = sky_phase(dot(viewVector, moonVector), sky_mieg);
 
 	vec3 scatteringSun     = vec3(0.0);
@@ -128,19 +128,19 @@ vec3 calculateAtmosphere(vec3 background, vec3 viewVector, vec3 upVector, vec3 s
 	for (int i = 0; i < iSteps; ++i, position += increment) {
 		vec3 density          = sky_density(length(position));
 		if (density.y > 1e35) break;
-		vec3 stepAirmass      = density * stepSize;
-		vec3 stepOpticalDepth = sky_coefficientsAttenuation * stepAirmass;
+		vec3 stepAirmass      = density * stepSize ;
+		vec3 stepOpticalDepth = sky_coefficientsAttenuation * stepAirmass ;
 
-		vec3 stepTransmittance       = exp2(-stepOpticalDepth * rLOG2);
-		vec3 stepTransmittedFraction = clamp01((stepTransmittance - 1.0) / -stepOpticalDepth);
-		vec3 stepScatteringVisible   = transmittance * stepTransmittedFraction;
+		vec3 stepTransmittance       = exp2(-stepOpticalDepth * rLOG2) ;
+		vec3 stepTransmittedFraction = clamp01((stepTransmittance - 1.0) / -stepOpticalDepth) ;
+		vec3 stepScatteringVisible   = transmittance * stepTransmittedFraction ;
 
-		scatteringSun  += sky_coefficientsScattering * (stepAirmass.xy * phaseSun ) * stepScatteringVisible * sky_transmittance(position, sunVector*0.5+0.1,  jSteps);
+		scatteringSun  += sky_coefficientsScattering  * (stepAirmass.xy * phaseSun ) * stepScatteringVisible * sky_transmittance(position, sunVector*0.5+0.1,  jSteps)  ;
 		scatteringMoon += sky_coefficientsScattering * (stepAirmass.xy * phaseMoon) * stepScatteringVisible * sky_transmittance(position, moonVector, jSteps);
 		// Nice way to fake multiple scattering.
-		scatteringAmbient += sky_coefficientsScattering * stepAirmass.xy * (stepScatteringVisible * low_sun);
+		scatteringAmbient += sky_coefficientsScattering * stepAirmass.xy * (stepScatteringVisible * low_sun );
 
-		transmittance *= stepTransmittance;
+		transmittance *= stepTransmittance ;
 	}
 
 	vec3 scattering = scatteringSun * sunColorBase + (scatteringAmbient) * background + scatteringMoon*moonColorBase	;

shaders/lib/climate_settings.glsl

@@ -169,7 +169,7 @@ float day7 = clamp(clamp(Day-7, 0.0,1.0)*clamp(9-Day, 0.0,1.0),0.0,1.0);
 		BiomeColors.b = isSwamps*0.35 + isJungles*0.8;
 
 		// insure the biome colors are locked to the fog shape and lighting, but not its orignal color.
-		BiomeColors *= dot(FinalFogColor,vec3(0.33)); 
+		BiomeColors *= dot(FinalFogColor,vec3(0.21, 0.72, 0.07)); 
 		
 		// these range 0.0-1.0. they will never overlap.
 		float Inbiome = isJungles+isSwamps;

shaders/lib/settings.glsl

@@ -44,6 +44,10 @@
 #define TORCH_B 0.5 // [0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.2 0.21 0.22 0.23 0.24 0.25 0.26 0.27 0.28 0.29 0.3 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.38 0.39 0.4 0.41 0.42 0.43 0.44 0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55 0.56 0.57 0.58 0.59 0.6 0.61 0.62 0.63 0.64 0.65 0.66 0.67 0.68 0.69 0.7 0.71 0.72 0.73 0.74 0.75 0.76 0.77 0.78 0.79 0.8 0.81 0.82 0.83 0.84 0.85 0.86 0.87 0.88 0.89 0.9 0.91 0.92 0.93 0.94 0.95 0.96 0.97 0.98 0.99 1.0]
 #define AO_in_sunlight // control if ambient occlusion appears in sunlit areas.
 // #define ambientSSS_view
+
+
+
+#define Refraction
 // --- DOF ---
 
 #define DOF_QUALITY -1 // [-1 0 1 2 3 4]
@@ -68,8 +72,8 @@
 // #define SPLIT_RENDER // AAAAAAAAAAAAAAAA
 
 // --- FOG/VOLUMETRICS ---
+#define Biome_specific_environment // makes the fog density and color look unique in certain biomes. (swamps, jungles, lush caves, giant pines, dark forests)
 
-#define Refraction
 #define Cave_fog // cave fog....
 #define CaveFogFallOff 1.3 // [0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 ] 
 #define CaveFogColor_R 0.1 //  [0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.2 0.21 0.22 0.23 0.24 0.25 0.26 0.27 0.28 0.29 0.3 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.38 0.39 0.4 0.41 0.42 0.43 0.44 0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55 0.56 0.57 0.58 0.59 0.6 0.61 0.62 0.63 0.64 0.65 0.66 0.67 0.68 0.69 0.7 0.71 0.72 0.73 0.74 0.75 0.76 0.77 0.78 0.79 0.8 0.81 0.82 0.83 0.84 0.85 0.86 0.87 0.88 0.89 0.9 0.91 0.92 0.93 0.94 0.95 0.96 0.97 0.98 0.99 1.0]
@@ -210,7 +214,6 @@
 #define Spring_Leaf_G 0.8 // the color of the plants during this season [0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0]
 #define Spring_Leaf_B 0.8 // the color of the plants during this season [0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0]
 
-#define Biome_specific_environment // makes the fog density and color look unique in certain biomes. (swamps, jungles, lush caves, giant pines, dark forests)
 const float ambientOcclusionLevel = 1.0; // this controls vanilla minecrafts ambient occlusion. [0.0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.2 0.21 0.22 0.23 0.24 0.25 0.26 0.27 0.28 0.29 0.3 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.38 0.39 0.4 0.41 0.42 0.43 0.44 0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55 0.56 0.57 0.58 0.59 0.6 0.61 0.62 0.63 0.64 0.65 0.66 0.67 0.68 0.69 0.7 0.71 0.72 0.73 0.74 0.75 0.76 0.77 0.78 0.79 0.8 0.81 0.82 0.83 0.84 0.85 0.86 0.87 0.88 0.89 0.9 0.91 0.92 0.93 0.94 0.95 0.96 0.97 0.98 0.99 1.0 ]
 const float	sunPathRotation	= -35;	//[-90 -89 -88 -87 -86 -85 -84 -83 -82 -81 -80 -79 -78 -77 -76 -75 -74 -73 -72 -71 -70 -69 -68 -67 -66 -65 -64 -63 -62 -61 -60 -59 -58 -57 -56 -55 -54 -53 -52 -51 -50 -49 -48 -47 -46 -45 -44 -43 -42 -41 -40 -39 -38 -37 -36 -35 -34 -33 -32 -31 -30 -29 -28 -27 -26 -25 -24 -23 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 ]
 #define Puddle_Size 1.0 // [0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5]

shaders/lib/volumetricClouds.glsl

@@ -142,11 +142,9 @@ vec3 Cloud_lighting(
 	vec3 skyLighting = SkyColors;
 
 	#ifdef Altostratus
-		float Coverage; float Density;
+		float Coverage = 0.0; float Density = 0.0;
 		DailyWeather_Alto(Coverage,Density);
-		skyLighting += sunContributionMulti * exp(SunShadowing * -3) * clamp(Coverage * (1-Density),0,1);
-
-		// skyLighting += (sunContributionMulti * 5.0 * exp(SunShadowing * -3)) * exp(altoShadow * -0.1);
+		skyLighting += sunContributionMulti * exp(-SunShadowing)  * clamp((1.0 - abs(pow(Density*4.0 - 1.1,4.0))) * Coverage,0,1) ;
 	#endif
 
 	skyLighting *= exp(SkyShadowing * AmbientShadow * coeeff/2 ) * lesspowder ;
@@ -174,7 +172,7 @@ float phaseg(float x, float g){
 }
 
 float CustomPhase(float LightPos, float S_1, float S_2){
-	float SCALE = S_2; // remember the epislons 0.001 is fine.
+	float SCALE = S_2 + 0.001; // remember the epislons 0.001 is fine.
 	float N = S_1;
 	float N2 = N / SCALE;
 
@@ -244,7 +242,7 @@ vec4 renderClouds(
 
 	if(dV_Sun.y/shadowStep < -0.1) dV_Sun = -dV_Sun;
 	
-	float mieDay = phaseg(SdotV, 0.75) * 2;
+	float mieDay = phaseg(SdotV, 0.75) * 3.14;
 	float mieDayMulti = phaseg(SdotV, 0.35) * 2;
 
 	vec3 sunContribution = SunColor * mieDay;
@@ -289,7 +287,8 @@ vec4 renderClouds(
 				
 				float phase = PhaseHG(-SdotV, (1.0-cumulus));
 
-				float ambientlightshadow = 1.0-clamp(exp((progress_view.y - (MaxCumulusHeight - 50)) / 100.0),0.0,1.0);
+				float ambientlightshadow = 1.0 - clamp(exp((progress_view.y - (MaxCumulusHeight - 50)) / 100.0),0.0,1.0);
+
 				vec3 S = Cloud_lighting(muE, cumulus*Cumulus_density, Sunlight, MoonLight, SkyColor, sunContribution, sunContributionMulti, moonContribution, ambientlightshadow, 0, progress_view);
 
 				vec3 Sint = (S - S * exp(-mult*muE)) / muE;

shaders/lib/volumetricFog.glsl

@@ -78,6 +78,12 @@ vec4 getVolumetricRays(
 	vec3 sunColor = lightCol.rgb / 80.0;
 	vec3 skyCol0 = AmbientColor / 150. * 5.; // * max(abs(WsunVec.y)/150.0,0.);
 
+	#ifdef Biome_specific_environment
+		// recolor change sun and sky color to some color, but make sure luminance is preserved.
+		BiomeFogColor(sunColor);
+		BiomeFogColor(skyCol0);
+	#endif
+
 	vec3 rC = vec3(fog_coefficientRayleighR*1e-6, fog_coefficientRayleighG*1e-5, fog_coefficientRayleighB*1e-5);
 	vec3 mC = vec3(fog_coefficientMieR*1e-6, fog_coefficientMieG*1e-6, fog_coefficientMieB*1e-6);
 
@@ -127,14 +133,8 @@ vec4 getVolumetricRays(
 		vec3 rainRays =   (sunColor*sh) * (rayL*phaseg(SdotV,0.5)) * clamp(pow(WsunVec.y,5)*2,0.0,1) * rainStrength * RainFog_amount; 
 		vec3 CaveRays = (sunColor*sh)  * phaseg(SdotV,0.7) * 0.001 * (1.0 - max(eyeBrightnessSmooth.y,0)/240.);
  
-		// vec3 RAAAAY =    (sunColor*sh) * (rayL*phaseg(SdotV,0.5)) ; 
-
 		vec3 vL0 = (DirectLight + AmbientLight + AtmosphericFog + rainRays) * max(eyeBrightnessSmooth.y,0)/240. + CaveRays ;
 
-		#ifdef Biome_specific_environment
-			BiomeFogColor(vL0); // ?????
-		#endif
-
 		vL += (vL0 - vL0 * exp(-(rL+m)*dd*dL)) / ((rL+m)+0.00000001)*absorbance;
 		absorbance *= dot(clamp(exp(-(rL+m)*dd*dL),0.0,1.0), vec3(0.333333));
 	}

shaders/shaders.properties

@@ -225,7 +225,7 @@ uniform.float.Alto_Cov = smooth( if( \
 
 uniform.float.Alto_Den = smooth( if( \
     moonPhase == 0, 0.1, \
-    moonPhase == 1, 0.1, \
+    moonPhase == 1, 0.25, \
     moonPhase == 2, 0.0, \
     moonPhase == 3, 0.0, \
     moonPhase == 4, 0.0, \