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fix indirect sunlight on clouds

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Xonk 2024-01-01 18:36:43 -05:00
parent be97337c7b
commit 841ca3559f
1 changed files with 5 additions and 4 deletions
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9
shaders/lib/volumetricClouds.glsl
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@ -259,6 +259,7 @@ vec4 renderLayer(
in vec3 skyLightCol,
in vec3 sunScatter,
in vec3 sunMultiScatter,
in vec3 indirectScatter,
in float distantfog,
bool notVisible
){
@ -339,7 +340,7 @@ if(layer == 2){
#if defined CloudLayer1 && defined CloudLayer0
// a horrible approximation of direct light indirectly hitting the lower layer of clouds after scattering through/bouncing off the upper layer.
lighting += sunScatter * exp((skyScatter*skyScatter) * cumulus * -35.0) * upperLayerOcclusion * exp(-20.0 * pow(abs(upperLayerOcclusion - 0.3),2));
lighting += indirectScatter * exp((skyScatter*skyScatter) * cumulus * -35.0) * upperLayerOcclusion * exp(-20.0 * pow(abs(upperLayerOcclusion - 0.3),2));
#endif
COLOR += max(lighting - lighting*exp(-mult*muE),0.0) * TOTAL_EXTINCTION;
@ -458,7 +459,7 @@ vec4 renderClouds(
#endif
#ifdef CloudLayer0
vec4 layer0 = renderLayer(0, layer0_start, dV_view, mult, Dither.x, maxIT_clouds, MinHeight, MaxHeight, dV_Sun, CloudLayer0_density, SkyColor, directScattering, directMultiScattering, distantfog, false);
vec4 layer0 = renderLayer(0, layer0_start, dV_view, mult, Dither.x, maxIT_clouds, MinHeight, MaxHeight, dV_Sun, CloudLayer0_density, SkyColor, directScattering, directMultiScattering, sunIndirectScattering, distantfog, false);
total_extinction *= layer0.a;
// stop overdraw.
@ -470,7 +471,7 @@ vec4 renderClouds(
#endif
#ifdef CloudLayer1
vec4 layer1 = renderLayer(1, layer1_start, dV_view, mult, Dither.x, maxIT_clouds, MinHeight1, MaxHeight1, dV_Sun, CloudLayer1_density, SkyColor, directScattering, directMultiScattering, distantfog, notVisible);
vec4 layer1 = renderLayer(1, layer1_start, dV_view, mult, Dither.x, maxIT_clouds, MinHeight1, MaxHeight1, dV_Sun, CloudLayer1_density, SkyColor, directScattering, directMultiScattering,sunIndirectScattering, distantfog, notVisible);
total_extinction *= layer1.a;
// stop overdraw.
@ -478,7 +479,7 @@ vec4 renderClouds(
#endif
#ifdef CloudLayer2
vec4 layer2 = renderLayer(2, layer2_start, dV_view_Alto, mult_alto, Dither.x, maxIT_clouds, Height2, Height2, dV_Sun, CloudLayer2_density, SkyColor, directScattering, directMultiScattering, distantfog, altoNotVisible);
vec4 layer2 = renderLayer(2, layer2_start, dV_view_Alto, mult_alto, Dither.x, maxIT_clouds, Height2, Height2, dV_Sun, CloudLayer2_density, SkyColor, directScattering, directMultiScattering,sunIndirectScattering, distantfog, altoNotVisible);
total_extinction *= layer2.a;
#endif