Rpcs3: RSX: Unknown cull face 0x0

[JohnGodgames]

I saw that in hack/versus too
VIDEO

F {rsx::thread} class std::runtime_error thrown: Unknown cull face 0x0
(in file Emu\RSX\gcm_enums.cpp:861)

LOG

[raven02]

I can see it ran using GL backend .How about DX12 and Vulkan ? has same cull face error .

[JohnGodgames]

All backends have the same issue.

[raven02]

I see. Thanks @JohnGodgames

[standsup]

So apparently there are select versions of RPCS3, where this issue does not appear,at least with Soulcalibur 4. Might be worth trying those out:
http://www.emunewz.net/forum/showthread.php?tid=179000

[ikki84]

The same error happens in Naruto Shippuden: Ultimate Ninja Storm 3 [BLES01764] when you use the Shikamaru´s Ultimate Jutsu.

"F {rsx::thread} class std::runtime_error thrown: Unknown cull face 0x0"
"(in file C:\rpcs3\rpcs3\Emu\RSX\gcm_enums.cpp:838)"

The game is sending a null value to the switch case.
Setting a default case, "default: " to the switch prevent it to trigger and appearently doesn´t affect the game negatively.

[derrysan7]

This problem still exist in Hack Versus with the latest master build version as of 6 august 2017... its happens constantly when sora did the r1 r2 attack

[Web1017]

This Issue appears to still exist in Naruto Shippuden Ultimate Ninja Storm 2, when Shikamaru´s Ultimate Jutsu is used.

F {rsx::thread} class std::runtime_error thrown: Unknown cull face 0x0
(in file Emu\RSX\gcm_enums.cpp:838)

Appears both in Single Player Campaign and Free Battle

[elad335]

From hardware testing, when an invalid value targets these registers it gets discarded and replaced by previous value. tested with NV4097_SET_CULL_FACE and NV4097_SET_CULL_FACE_ENABLE
this is unfixable at the current code state without a rewrite, as register writes always modify previous value.
an optional solution is to save the previous value of the register before writing a new one, and then checking the validity of the value later in a method call.

Testcase, the testcase is using an intentional crash dump to get the current state of these registers.

Adding a default case and returning rsx::cull_face::back (initial register mode) in rsx::to_cull_face gets Monster Jam: Path of Destruction from loadable into ingame.

[kd-11]

Its also tricky since I know that writing invalid values to some registers will kill hardware with a method error exception. We'll need to identify those that can survive bad writes from those that can't.