internal void SetupDrawCall(Camera cam)
{
if (UseFrustumCulling)
{
GeomUtil.CalculateFrustumPlanes(s_planes, Camera.current.projectionMatrix * Camera.current.worldToCameraMatrix);
isVisible |= GeometryUtility.TestPlanesAABB(s_planes, Bounds);
}
if (!SystemComp.enabled || SystemComp.ParticleCount == 0)
{
return;
}
//Setup proper size mult depending on camera ortho size
if (isPixelSize)
{
var pixelMult = Mathf.Max(1.0f / Screen.width, 1.0f / Screen.height);
if (cam.orthographic)
{
pixelMult *= cam.orthographicSize * 2.0f;
}
m_cacheMaterial.SetVector(SID._PixelMult, new Vector4(pixelMult, cam.orthographic ? 0.0f : 1.0f));
}
else
{
m_cacheMaterial.SetVector(SID._PixelMult, new Vector4(1.0f, 0.0f));
}
//Setup DrawM
Bounds bounds = UseFrustumCulling ? _bounds : new Bounds(Vector3.zero, Vector3.one * 10000);
var layer = SystemComp.gameObject.layer;
Graphics.DrawMeshInstancedIndirect(m_particleMesh, 0, m_cacheMaterial, bounds, m_argsBuffer, 0, null, CastShadows, ReceiveShadows, layer, cam);
}