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add scale setting for large/small cumulus clouds

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Xonk
2024-11-15 20:56:53 -05:00
parent b91e1b762e
commit b305de9412
3 changed files with 15 additions and 22 deletions
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20
shaders/lib/volumetricClouds.glsl
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@ -47,8 +47,8 @@ float getCloudShape(int LayerIndex, int LOD, in vec3 position, float minHeight,
if(LayerIndex == LARGECUMULUS_LAYER){
coverage = dailyWeatherParams0.y;
largeCloud = texture2D(noisetex, (samplePos.zx + cloud_movement*2.0)/10000.0).b;
smallCloud = texture2D(noisetex, (samplePos.zx - cloud_movement*2.0)/2500.0).b;
largeCloud = texture2D(noisetex, (samplePos.zx + cloud_movement*2.0)/10000.0 * CloudLayer1_scale).b;
smallCloud = texture2D(noisetex, (samplePos.zx - cloud_movement*2.0)/2500.0 * CloudLayer1_scale).b;
smallCloud = abs(largeCloud* -0.7) + smallCloud;
@ -60,8 +60,8 @@ float getCloudShape(int LayerIndex, int LOD, in vec3 position, float minHeight,
if(LayerIndex == SMALLCUMULUS_LAYER){
coverage = dailyWeatherParams0.x;
largeCloud = texture2D(noisetex, (samplePos.xz + cloud_movement)/5000.0).b;
smallCloud = 1.0-texture2D(noisetex, (samplePos.xz - cloud_movement)/500.0).r;
largeCloud = texture2D(noisetex, (samplePos.xz + cloud_movement)/5000.0 * CloudLayer0_scale).b;
smallCloud = 1.0-texture2D(noisetex, (samplePos.xz - cloud_movement)/500.0 * CloudLayer0_scale).r;
smallCloud = abs(largeCloud-0.6) + smallCloud*smallCloud;
@ -98,18 +98,18 @@ float getCloudShape(int LayerIndex, int LOD, in vec3 position, float minHeight,
float erosion = 0.0;
if(LayerIndex == SMALLCUMULUS_LAYER){
erosion += (1.0-densityAtPos(samplePos * 200.0)) * sqrt(1.0-shape);
erosion += (1.0-densityAtPos(samplePos * 200.0 * CloudLayer0_scale)) * sqrt(1.0-shape);
float falloff = 1.0 - clamp((maxHeight - position.y)/100.0,0.0,1.0);
erosion += abs(densityAtPos(samplePos * 600.0) - falloff) * 0.75 * (1.0-shape) * (1.0-falloff*0.25);
erosion += abs(densityAtPos(samplePos * 600.0 * CloudLayer0_scale) - falloff) * 0.75 * (1.0-shape) * (1.0-falloff*0.25);
erosion = erosion*erosion*erosion*erosion;
}
if(LayerIndex == LARGECUMULUS_LAYER){
erosion += (1.0 - densityAtPos(samplePos * 100.0)) * sqrt(1.0-shape);
erosion += (1.0 - densityAtPos(samplePos * 100.0 * CloudLayer1_scale)) * sqrt(1.0-shape);
float falloff = 1.0 - clamp((maxHeight - position.y)/200.0,0.0,1.0);
erosion += abs(densityAtPos(samplePos * 450.0) - falloff) * 0.75 * (1.0-shape) * (1.0-falloff*0.5);
erosion += abs(densityAtPos(samplePos * 450.0 * CloudLayer1_scale) - falloff) * 0.75 * (1.0-shape) * (1.0-falloff*0.5);
erosion = erosion*erosion*erosion*erosion;
}
@ -375,7 +375,7 @@ vec4 GetVolumetricClouds(
float totalAbsorbance = 1.0;
vec4 cloudColor = vec4(color, totalAbsorbance);
float cloudheight = CloudLayer0_tallness;
float cloudheight = CloudLayer0_tallness / CloudLayer0_scale;
float minHeight = CloudLayer0_height;
float maxHeight = cloudheight + minHeight;
@ -435,7 +435,7 @@ vec4 GetVolumetricClouds(
vec4 largeCumulusClouds = cloudColor;
#ifdef CloudLayer1
cloudheight = CloudLayer1_tallness;
cloudheight = CloudLayer1_tallness/CloudLayer1_scale;
minHeight = CloudLayer1_height;
maxHeight = cloudheight + minHeight;