nv2a 0x97 -> 0x16bc (glEdgeFlag?) unhandled

[dracc]

Title

https://xemu.app/titles/4d53006e
https://xemu.app/titles/53430007

Bug Description

According to the debug output, 0x97 -> 0x16bc is unhandled.
In the NV20 nouveau sources, this instruction is 3D_EDGEFLAG_ENABLE, and the values it can take matches what is received in the function calls.

Expected Behavior

The NV2A instruction 0x16BC should be handled.

xemu Version

0.6.2-55-gcaf84884c4

System Information

N/A

Additional Context

No response

[Triticum0]

Also, affect rolling, 0x1
https://xemu.app/titles/53430007/#Rolling

[abaire]

This looks like it is indeed glEdgeFlag, the behavior matches the red book description: https://www.glprogramming.com/red/chapter02.html

Tests: https://github.com/abaire/nxdk_pgraph_tests/blob/main/src/tests/edge_flag_tests.cpp

HW results: https://github.com/abaire/nxdk_pgraph_tests_golden_results/wiki/Results-Edge_flag