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Dolphin, the GameCube and Wii emulator - Forums › Dolphin Emulator Discussion and Support › Controllers v
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Wii U GCC Adapter Support
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Wii U GCC Adapter Support
06-24-2015, 09:14 AM (This post was last modified: 06-24-2015, 09:18 AM by Devrant.)
#1
Devrant Offline
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I have been testing the Wii U gamecube controller adapter (using project M 3.5) with some of the latest dolphin versions and found the following:

-Support for the adapter began at version 4.0-4594. However, d-pad didn't work well and the c-stick worked only sometimes. In this version, I run Project M with OpenGL graphics, which I find to be best.

-At version 4.0-4599, the d-pad problem has been corrected. C-stick still doesn't work. Again, I'm using OpenGL.

-At version 4.0-4971, C-stick has been corrected. However, if I use OpenGL, the game crashes on start with the message "Failed to compile vertex shader" (I'll write the complete text at the end of the thread*). I can only load the game if I use Direct3D graphics, which produce awful ingame textures. I have tried OpenGL graphics with version 4.0-4988, 4.0-5593, 4.0-6844 and 4.0-6848 (latest version), and all of them give out the same error message. I guess somewhere in between version 4.0-4599 and 4.0-4971, a change was introduced that affected OpenGL graphics.

Right now I'm torn between using version 4.0-4599 for decent graphics or 4.0-4971 for full C-stick functionality.


Has anybody had the same problem? Does anybody know a workaround?



*Failed to compile vertex shader! [and "Failed to compile pixel shader!"]
This usually happens when trying to use Dolphin with an outdated GPU or integrated GPU like the Intel GMA series.
Error message:
Debug info (Intel,Intel® Graphics 4000, 3.3.0 - Build 8.15.10.2653): ERROR: 1:30: 'centroid': syntax error syntax error

Edit: Note that I'm using the new Gamecube Controllers, those that have the smash logo.
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06-24-2015, 10:07 AM
#2
ExtremeDude2 Offline
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I'm going to assume dolphin is using your intel GPU (bad Sad) and not your nvidia GPU (less bad) so this might help:

https://forums.dolphin-emu.org/Thread-unofficial-laptop-performance-guide
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06-24-2015, 10:22 AM
#3
Devrant Offline
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(06-24-2015, 10:07 AM)ExtremeDude2 Wrote: I'm going to assume dolphin is using your intel GPU (bad Sad) and not your nvidia GPU (less bad) so this might help:

https://forums.dolphin-emu.org/Thread-unofficial-laptop-performance-guide

Nope, that's not it. I'm on high performance while running dolphin, and I know for fact that I'm using Nvidia instead of Intel Graphics. When I use Intel, games on dolphin run slowly, and that's not the case.

Anyway, even if I WERE using the Intel graphics card, the game should just run slowly, not crash, AND changing graphics from OpenGL to Direct3D should have no effect whatsoever if that were the problem.
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06-24-2015, 10:31 AM
#4
JMC47 Offline
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The log message literally says it's using your Intel HD card.
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06-24-2015, 11:14 AM (This post was last modified: 06-24-2015, 11:20 AM by Devrant.)
#5
Devrant Offline
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(06-24-2015, 10:31 AM)JMC47 Wrote: The log message literally says it's using your Intel HD card.

You're right on that.

Just to be safe, i made sure to configure the Nvidia Control Panel so that Nvidia is always the prefered graphic card for Dolphin (as recommended by ExtremeDude2's link). I then tried again for dolphin 4.0-4971:

If I try to use OpenGL, the game still crashes, with the same message (Intel graphic card).
On the other hand, if I use Direct3D, there is no crash, and the game runs on high Nvidia performance (it runs fast, but with some bad textures, as I mentioned before).
My guess is that on the first case, the crash occurs before dolphin has started using Nvidia.

The thing is, dolphin shouldn't crash even if I'm using the Intel graphic card. In fact, I can run the game (Project M 3.5) with the Intel graphic card (it runs really slow) as long as I'm using Direct3D and not OpenGL.
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06-24-2015, 01:39 PM
#6
JMC47 Offline
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NVIDIA shouldn't have any bad textures though, that's what's confusing me.
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06-24-2015, 01:50 PM
#7
Devrant Offline
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(06-24-2015, 01:39 PM)JMC47 Wrote: NVIDIA shouldn't have any bad textures though, that's what's confusing me.

The character icons in the selection screen look bad, as well as the smoke or dust in battle (and a little bit of the shields).

   

Note that this happens when using Direct3D as graphic configuration. When I use OpenGL with any of the stable versions, or with version 4.0-4599, the textures are fine, both when using Intel (slow) and Nvidia.
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