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average_cached_z3

psx_gte::scene

Function average_cached_z3 

Source 
pub fn average_cached_z3(depths: [u16; 3]) -> u16
Expand description

Reload three cached projected depths into the GTE SZ FIFO and compute OTZ.

This is the indexed-mesh counterpart to average_z_triangle. It keeps cached vertex projection while using the PS1’s AVSZ3 unit instead of a software 64-bit multiply for every face. The configured ZSF3 weight is read from GTE control register 29.