public override void PrepareEffectPermutations(RenderDrawContext context)
{
base.PrepareEffectPermutations(context);
// Try finding root atmosphere render feature
foreach (var renderFeature in ((RootEffectRenderFeature)RootRenderFeature).RenderSystem.RenderFeatures)
{
if (renderFeature is AtmosphereRenderFeature atmosphereRenderFeature)
{
_atmosphereRenderFeature = atmosphereRenderFeature;
}
}
if (_atmosphereRenderFeature == null)
{
_shouldRenderAtmosphere = false;
return;
}
_shouldRenderAtmosphere = _atmosphereRenderFeature.Atmosphere != null;
var renderEffectKey = ((RootEffectRenderFeature)RootRenderFeature).RenderEffectKey;
var renderEffects = RootRenderFeature.RenderData.GetData(renderEffectKey);
int effectSlotCount = ((RootEffectRenderFeature)RootRenderFeature).EffectPermutationSlotCount;
foreach (var renderObject in RootRenderFeature.RenderObjects)
{
var staticObjectNode = renderObject.StaticObjectNode;
if (renderObject is not RenderMesh renderMesh)
{
continue;
}
var material = renderMesh.MaterialPass;
var shouldRenderAtmosphereForRenderObject = material.HasTransparency && _shouldRenderAtmosphere;
for (int i = 0; i < effectSlotCount; ++i)
{
var staticEffectObjectNode = staticObjectNode * effectSlotCount + i;
var renderEffect = renderEffects[staticEffectObjectNode];
// Skip effects not used during this frame
if (renderEffect == null || !renderEffect.IsUsedDuringThisFrame(RenderSystem))
{
continue;
}
renderEffect.EffectValidator.ValidateParameter(AtmosphereForwardShadingEffectParameters.RenderAerialPerspective, shouldRenderAtmosphereForRenderObject);
}
}
}
private void SetAtmosphereParameters(RenderDrawContext context, int viewIndex, ParameterCollection parameters)
{
var lightRange = lightRanges[viewIndex];
if (lightRange.Start == lightRange.End)
{
return;
}
if (!(lights[lightRange.Start].Light.Type is AtmosphereLightDirectional light))
{
return;
}
// Fetch compositor and find atmosphere render feature
var sceneSystem = context.RenderContext.Services.GetService <SceneSystem>();
var graphicsCompositor = sceneSystem.GraphicsCompositor;
AtmosphereRenderFeature atmosphereRenderFeature = null;
foreach (var feature in graphicsCompositor.RenderFeatures)
{
if (feature is AtmosphereRenderFeature atmoshpere)
{
atmosphereRenderFeature = atmoshpere;
}
}
if (atmosphereRenderFeature == null || atmosphereRenderFeature.TransmittanceLutTexture == null)
{
return;
}
parameters.Set(AtmosphereLightDirectionalGroupKeys.BottomRadius.ComposeWith(_compositionName), light.Atmosphere.PlanetRadius);
parameters.Set(AtmosphereLightDirectionalGroupKeys.TopRadius.ComposeWith(_compositionName), light.Atmosphere.PlanetRadius + light.Atmosphere.AtmosphereHeight);
parameters.Set(AtmosphereLightDirectionalGroupKeys.ScaleToSkyUnit.ComposeWith(_compositionName), light.Atmosphere.StrideToAtmosphereUnitScale);
parameters.Set(AtmosphereLightDirectionalGroupKeys.TransmittanceLutTexture, atmosphereRenderFeature.TransmittanceLutTexture);
}
private void SetAtmosphereParameters(RenderDrawContext context, int viewIndex, ParameterCollection parameters)
{
var lightRange = lightRanges[viewIndex];
if (lightRange.Start == lightRange.End)
{
return;
}
if (!(lights[lightRange.Start].Light.Type is AtmosphereLightDirectional light))
{
return;
}
// Fetch compositor and find atmosphere render feature
var sceneSystem = context.RenderContext.Services.GetService <SceneSystem>();
var graphicsCompositor = sceneSystem.GraphicsCompositor;
AtmosphereRenderFeature atmosphereRenderFeature = null;
foreach (var feature in graphicsCompositor.RenderFeatures)
{
if (feature is AtmosphereRenderFeature atmoshpere)
{
atmosphereRenderFeature = atmoshpere;
}
}
if (atmosphereRenderFeature == null || atmosphereRenderFeature.TransmittanceLutTexture == null)
{
return;
}
atmosphereRenderFeature.SetParameters(null, light.Atmosphere, parameters, null);
parameters.Set(AtmosphereParametersBaseKeys.TransmittanceLutTexture, atmosphereRenderFeature.TransmittanceLutTexture);
}