private void SetupLight(RenderDrawContext context, LightShaftProcessor.AssociatedData lightShaft, LightShadowMapTexture shadowMapTexture, ParameterCollection lightParameterCollection)
{
BoundingBoxExt box = new BoundingBoxExt(new Vector3(-float.MaxValue), new Vector3(float.MaxValue)); // TODO
LightShaftRenderData data;
if (!renderData.TryGetValue(lightShaft.Light, out data))
{
data = new LightShaftRenderData();
renderData.Add(lightShaft.Light, data);
UpdateRenderData(context, data, lightShaft, shadowMapTexture);
}
if (shadowMapTexture != null && data.ShadowMapRenderer != null)
{
// Detect changed shadow map renderer or type
if (data.ShadowMapRenderer != shadowMapTexture.Renderer || data.ShadowType != shadowMapTexture.ShadowType)
{
UpdateRenderData(context, data, lightShaft, shadowMapTexture);
}
}
else if (shadowMapTexture?.Renderer != data.ShadowMapRenderer) // Change from no shadows to shadows
{
UpdateRenderData(context, data, lightShaft, shadowMapTexture);
}
data.RenderViews[0] = context.RenderContext.RenderView;
data.ShaderGroup.Reset();
data.ShaderGroup.SetViews(data.RenderViews);
data.ShaderGroup.AddView(0, context.RenderContext.RenderView, 1);
data.ShaderGroup.AddLight(lightShaft.LightComponent, shadowMapTexture);
data.ShaderGroup.UpdateLayout("lightGroup");
lightParameterCollection.Set(LightShaftsEffectKeys.LightGroup, data.ShaderGroup.ShaderSource);
// Update the effect here so the layout is correct
lightShaftsEffectShader.EffectInstance.UpdateEffect(GraphicsDevice);
data.ShaderGroup.ApplyViewParameters(context, 0, lightParameterCollection);
data.ShaderGroup.ApplyDrawParameters(context, 0, lightParameterCollection, ref box);
data.UsageCounter = usageCounter;
}
private void DrawLightShaft(RenderDrawContext context, LightShaftProcessor.AssociatedData lightShaft)
{
lightShaftsEffectShader.Parameters.Set(LightShaftsShaderKeys.DensityFactor, lightShaft.DensityFactor);
lightShaftsEffectShader.Draw(context, $"Light shaft [{lightShaft.LightComponent.Entity.Name}]");
}
private void UpdateRenderData(RenderDrawContext context, LightShaftRenderData data, LightShaftProcessor.AssociatedData lightShaft, LightShadowMapTexture shadowMapTexture)
{
if (lightShaft.Light is LightPoint)
{
data.GroupRenderer = new LightPointGroupRenderer();
}
else if (lightShaft.Light is LightSpot)
{
data.GroupRenderer = new LightSpotGroupRenderer();
}
else if (lightShaft.Light is LightDirectional)
{
data.GroupRenderer = new LightDirectionalGroupRenderer();
}
else
{
throw new InvalidOperationException("Unsupported light type");
}
ILightShadowMapShaderGroupData shadowGroup = null;
if (shadowMapTexture != null)
{
data.ShadowType = shadowMapTexture.ShadowType;
data.ShadowMapRenderer = shadowMapTexture.Renderer;
shadowGroup = data.ShadowMapRenderer.CreateShaderGroupData(data.ShadowType);
}
else
{
data.ShadowType = 0;
data.ShadowMapRenderer = null;
}
data.ShaderGroup = data.GroupRenderer.CreateLightShaderGroup(context, shadowGroup);
}