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DSO Min/Max: Currently only used for aggregate volumes, and only for volumes that use an ImplicitField DSO (like OpenVDB). If set to 1, the DSO may be able to use stored information from the file directly to compute the minimum and maximum values within the volume. This may allow the renderer to avoid shading the volume up front, greatly decreasing time to first pixel. This can only be enabled if the density signal from the volume is used directly, or if the density signal is modulated only by the DSO itself. Any shading modifications of the density signal requires setting this parameter to off.