/// <summary>
/// Creates a new <c>MainLightShadowCasterPass</c> instance.
/// </summary>
/// <param name="evt">The <c>RenderPassEvent</c> to use.</param>
/// <seealso cref="RenderPassEvent"/>
public MainLightShadowCasterPass(RenderPassEvent evt)
{
base.profilingSampler = new ProfilingSampler(nameof(MainLightShadowCasterPass));
renderPassEvent = evt;
m_MainLightShadowMatrices = new Matrix4x4[k_MaxCascades + 1];
m_CascadeSlices = new ShadowSliceData[k_MaxCascades];
m_CascadeSplitDistances = new Vector4[k_MaxCascades];
MainLightShadowConstantBuffer._WorldToShadow = Shader.PropertyToID("_MainLightWorldToShadow");
MainLightShadowConstantBuffer._ShadowParams = Shader.PropertyToID("_MainLightShadowParams");
MainLightShadowConstantBuffer._CascadeShadowSplitSpheres0 = Shader.PropertyToID("_CascadeShadowSplitSpheres0");
MainLightShadowConstantBuffer._CascadeShadowSplitSpheres1 = Shader.PropertyToID("_CascadeShadowSplitSpheres1");
MainLightShadowConstantBuffer._CascadeShadowSplitSpheres2 = Shader.PropertyToID("_CascadeShadowSplitSpheres2");
MainLightShadowConstantBuffer._CascadeShadowSplitSpheres3 = Shader.PropertyToID("_CascadeShadowSplitSpheres3");
MainLightShadowConstantBuffer._CascadeShadowSplitSphereRadii = Shader.PropertyToID("_CascadeShadowSplitSphereRadii");
MainLightShadowConstantBuffer._ShadowOffset0 = Shader.PropertyToID("_MainLightShadowOffset0");
MainLightShadowConstantBuffer._ShadowOffset1 = Shader.PropertyToID("_MainLightShadowOffset1");
MainLightShadowConstantBuffer._ShadowOffset2 = Shader.PropertyToID("_MainLightShadowOffset2");
MainLightShadowConstantBuffer._ShadowOffset3 = Shader.PropertyToID("_MainLightShadowOffset3");
MainLightShadowConstantBuffer._ShadowmapSize = Shader.PropertyToID("_MainLightShadowmapSize");
m_MainLightShadowmapID = Shader.PropertyToID("_MainLightShadowmapTexture");
m_EmptyLightShadowmapTexture = ShadowUtils.AllocShadowRT(1, 1, k_ShadowmapBufferBits, 1, 0, name: "_EmptyLightShadowmapTexture");
}