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add DISTANT HORIZONS SHADER PROGRAMS, and then make them work.

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Xonk
2024-02-05 16:04:37 -05:00
parent 4b7ef65541
commit 1b15799911
51 changed files with 1912 additions and 351 deletions
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38
shaders/lib/volumetricClouds.glsl
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@ -191,6 +191,7 @@ float GetAltostratusDensity(vec3 pos){
float small = texture2D(noisetex, (pos.xz - cloud_movement)/10000. - vec2(-large,1-large)/5).b;
large = max(large + Coverage - 0.5, 0.0);
// float shape = (small + pow((1.0-large),2.0))/2.0;
float weight = 0.7;
float shape = max( large*weight - small*(1.0-weight) ,0.0);
shape *= shape;
@ -327,6 +328,11 @@ if(layer == 2){
}else{
for(int i = 0; i < QUALITY; i++) {
// IntersecTerrain = length(rayProgress - cameraPosition) > lViewPosM;
// if(IntersecTerrain) break;
/// avoid overdraw
if(notVisible) break;
@ -338,14 +344,14 @@ if(layer == 2){
float muE = cumulus * fadedDensity;
float directLight = 0.0;
for (int j=0; j < 3; j++){
if(clamp(rayProgress.y - maxHeight,0.0,1.0) < 1.0 && clamp(rayProgress.y - minHeight,0.0,1.0) > 0.0){ // make sure no work is done on pixels with no densities
for (int j=0; j < 3; j++){
vec3 shadowSamplePos = rayProgress + dV_Sun * (0.1 + j * (0.1 + dither*0.05));
float shadow = GetCumulusDensity(layer, shadowSamplePos, 0, minHeight, maxHeight) * cloudDensity;
vec3 shadowSamplePos = rayProgress + dV_Sun * (0.1 + j * (0.1 + dither*0.05));
float shadow = GetCumulusDensity(layer, shadowSamplePos, 0, minHeight, maxHeight) * cloudDensity;
directLight += shadow;
directLight += shadow;
}
}
#if defined CloudLayer1 && defined CloudLayer0
if(layer == 0) directLight += CloudLayer1_density * 2.0 * GetCumulusDensity(1, rayProgress + dV_Sun/abs(dV_Sun.y) * max((LAYER1_maxHEIGHT-70) - rayProgress.y,0.0), 0, LAYER1_minHEIGHT, LAYER1_maxHEIGHT);
#endif
@ -380,7 +386,6 @@ if(layer == 2){
rayProgress += dV_view;
}
return vec4(COLOR, TOTAL_EXTINCTION);
}
}
@ -392,6 +397,10 @@ vec4 renderClouds(
vec3 SkyColor
){
// float lViewPosM = length(FragPosition) < dhRenderDistance *1.5? length(FragPosition) - 1.0 : 1000000000.0;
// bool IntersecTerrain = false;
#ifndef VOLUMETRIC_CLOUDS
return vec4(0.0,0.0,0.0,1.0);
#endif
@ -399,7 +408,6 @@ vec4 renderClouds(
vec3 color = vec3(0.0);
float heightRelativeToClouds = clamp(1.0 - max(cameraPosition.y - LAYER0_minHEIGHT,0.0) / 100.0 ,0.0,1.0);
// heightRelativeToClouds*=heightRelativeToClouds;
//////////////////////////////////////////
////// Raymarching stuff
@ -445,7 +453,7 @@ vec4 renderClouds(
// use this to blend into the atmosphere's ground.
vec3 approxdistance = normalize(dV_view);
#ifdef SKY_GROUND
float distantfog = mix(1.0, max(1.0 - clamp(exp2(pow(abs(approxdistance.y),1.5) * -35.0),0.0,1.0),0.0), heightRelativeToClouds);
float distantfog = mix(1.0, max(1.0 - clamp(exp2(pow(abs(approxdistance.y),1.5) * -100.0),0.0,1.0),0.0), heightRelativeToClouds);
#else
float distantfog = 1.0;
float distantfog2 = mix(1.0, max(1.0 - clamp(exp(pow(abs(approxdistance.y),1.5) * -35.0),0.0,1.0),0.0), heightRelativeToClouds);
@ -575,15 +583,15 @@ float GetCloudShadow(vec3 feetPlayerPos){
// assume a flat layer of cloud, and stretch the sampled density along the sunvector, starting from some vertical layer in the cloud.
#ifdef CloudLayer0
vec3 lowShadowStart = playerPos + (WsunVec / max(abs(WsunVec.y),0.2)) * max((CloudLayer0_height + 30) - playerPos.y,0.0) ;
vec3 lowShadowStart = playerPos + (WsunVec / max(abs(WsunVec.y),0.0)) * max((CloudLayer0_height + 20) - playerPos.y,0.0) ;
shadow += GetCumulusDensity(0, lowShadowStart, 1, CloudLayer0_height, CloudLayer0_height+100)*CloudLayer0_density;
#endif
#ifdef CloudLayer1
vec3 higherShadowStart = playerPos + (WsunVec / max(abs(WsunVec.y),0.2)) * max((CloudLayer1_height + 30) - playerPos.y,0.0) ;
vec3 higherShadowStart = playerPos + (WsunVec / max(abs(WsunVec.y),0.0)) * max((CloudLayer1_height + 30) - playerPos.y,0.0) ;
shadow += GetCumulusDensity(1, higherShadowStart, 0, CloudLayer1_height, CloudLayer1_height+100)*CloudLayer1_density;
#endif
#ifdef CloudLayer2
vec3 highShadowStart = playerPos + (WsunVec / max(abs(WsunVec.y),0.2)) * max(CloudLayer2_height - playerPos.y,0.0);
vec3 highShadowStart = playerPos + (WsunVec / max(abs(WsunVec.y),0.0)) * max(CloudLayer2_height - playerPos.y,0.0);
shadow += GetAltostratusDensity(highShadowStart) * CloudLayer2_density;
#endif
@ -605,15 +613,15 @@ float GetCloudShadow_VLFOG(vec3 WorldPos, vec3 WorldSpace_sunVec){
float shadow = 0.0;
#ifdef CloudLayer0
vec3 lowShadowStart = WorldPos + (WorldSpace_sunVec / max(abs(WorldSpace_sunVec.y),0.2)) * max((CloudLayer0_height+ 30) - WorldPos.y,0.0) ;
vec3 lowShadowStart = WorldPos + (WorldSpace_sunVec / max(abs(WorldSpace_sunVec.y),0.0)) * max((CloudLayer0_height + 20) - WorldPos.y,0.0) ;
shadow += GetCumulusDensity(0, lowShadowStart, 0, CloudLayer0_height,CloudLayer0_height+100)*CloudLayer0_density;
#endif
#ifdef CloudLayer1
vec3 higherShadowStart = WorldPos + (WorldSpace_sunVec / max(abs(WorldSpace_sunVec.y),0.2)) * max((CloudLayer1_height+ 30) - WorldPos.y,0.0) ;
vec3 higherShadowStart = WorldPos + (WorldSpace_sunVec / max(abs(WorldSpace_sunVec.y),0.0)) * max((CloudLayer1_height + 20) - WorldPos.y,0.0) ;
shadow += GetCumulusDensity(1,higherShadowStart, 0, CloudLayer1_height,CloudLayer1_height+100)*CloudLayer1_density;
#endif
#ifdef CloudLayer2
vec3 highShadowStart = WorldPos + (WorldSpace_sunVec / max(abs(WorldSpace_sunVec.y),0.2)) * max(CloudLayer2_height - WorldPos.y,0.0);
vec3 highShadowStart = WorldPos + (WorldSpace_sunVec / max(abs(WorldSpace_sunVec.y),0.0)) * max(CloudLayer2_height - WorldPos.y,0.0);
shadow += GetAltostratusDensity(highShadowStart)*CloudLayer2_density;
#endif