void OnEnable()
{
Debug.Assert(Instance == null, "StaggeredCascade is expected to be a singleton");
Instance = this;
m_StaggerStage = StaggerStage.Updating;
var go = new GameObject("ShadowCamera");
go.hideFlags = HideFlags.DontSave; // | HideFlags.NotEditable;
go.transform.SetParent(transform);
m_ShadowCamera = go.AddComponent <Camera>();
m_ShadowCamera.orthographic = true;
m_ShadowCamera.enabled = false;
m_ShaderPassName = new ShaderPassName("ShadowCaster");
m_DrawRendererSettings = new DrawRendererSettings {
rendererConfiguration = RendererConfiguration.None,
sorting = { flags = SortFlags.QuantizedFrontToBack }
};
m_DrawRendererSettings.SetShaderPassName(0, m_ShaderPassName);
m_FilterRendererSettings = new FilterRenderersSettings(true)
{
renderQueueRange = new RenderQueueRange {
min = (int)UnityEngine.Rendering.RenderQueue.Geometry,
max = (int)UnityEngine.Rendering.RenderQueue.GeometryLast
},
};
}
void OnDisable()
{
Instance = null;
if (Application.isPlaying)
{
Destroy(m_ShadowCamera.gameObject);
}
else
{
DestroyImmediate(m_ShadowCamera.gameObject);
}
m_StaggerStage = StaggerStage.Disabled;
}
bool DoRenderShadows(ScriptableRenderContext renderContext, CullResults cullResults, uint sliceIdx, uint sliceCount)
{
if (m_StaggerStage == StaggerStage.Enabled)
{
return(true);
}
var scales = transform.localScale;
m_ShadowCamera.transform.position = transform.position - m_StaggeredLightDir[sliceIdx] * scales.y / 2f;
m_ShadowCamera.transform.rotation = Quaternion.LookRotation(m_StaggeredLightDir[sliceIdx], Vector3.up);
m_ShadowCamera.orthographicSize = scales.z / 2f;
m_ShadowCamera.aspect = scales.x / scales.z;
m_ShadowCamera.nearClipPlane = 0f;
m_ShadowCamera.farClipPlane = scales.y;
CullResults.GetCullingParameters(m_ShadowCamera, out m_ShadowCullParams);
var lodParams = m_ShadowCullParams.lodParameters;
lodParams.cameraPosition = m_StaggeredPosition[sliceIdx];
m_ShadowCullParams.lodParameters = lodParams;
m_ShadowCullParams.shadowDistance = 0f;
var lodBias = QualitySettings.lodBias;
QualitySettings.lodBias = 100f;
CullResults.Cull(ref m_ShadowCullParams, renderContext, ref m_ShadowCullResults);
QualitySettings.lodBias = lodBias;
m_DrawRendererSettings.sorting.cameraPosition = m_StaggeredPosition[sliceIdx];
m_DrawRendererSettings.sorting.worldToCameraMatrix = m_StaggeredViewMatrix[sliceIdx];
renderContext.DrawRenderers(m_ShadowCullResults.visibleRenderers, ref m_DrawRendererSettings, m_FilterRendererSettings);
m_StaggerStage = StaggerStage.Enabled;
return(true);
}