Get the actual MSAA sample count that the backbuffer is ready to use this frame.
Use this property to determine the MSAA sample count when setting up render passes that target the backbuffer. Native render passes require all attachments to have matching sample counts; using this value ensures that intermediate MSAA attachments match what the backbuffer actually supports this frame.
This may differ from msaaSamples, which returns the last requested value. After changing the MSAA sample count via SetMSAASamples, some backends need time to apply the change. During that transition, this property returns 1 (no MSAA) until the backend is ready, ensuring render pass setup remains valid.
Returns 1 if SystemInfo.supportsMultisampledBackBuffer is false, or if the backbuffer surface does not yet exist.
See also: SetMSAASamples, msaaSamples, SystemInfo.supportsMultisampledBackBuffer