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Simple DirectMedia Layer
https://libsdl.org
618eb57519
Anecdotally, some force-feedback wheels have been reported to experience a reduced "definition", "texture", "precision", or "je ne sais quoi", which appears to be caused by sending more update flags than necessary to DirectInput. This may be related to the fact that there are two USB PID packets that are sent when updating a device: One contains the "general" force data, and the other contains the "type-specific" data. My speculation is that many wheels expect to only receive the latter, and misbehave when receiving both. This has been tested and validated anecdotally by others who have received a hacked-together version of PCSX2 that corrects the flags sent to DirectInput, who noted a significant improvement in the "feeling" of the FFB effects. The only way to validate this at a technical level is to grab a wheel that uses the "generic" DirectInput FFB drivers (which map nearly 1:1 with the USB PID specification), and inspect the USB packets (e.g. with USBPcap) to check whether redundant data is being sent. |
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Simple DirectMedia Layer (SDL for short) is a cross-platform library designed to make it easy to write multi-media software, such as games and emulators.
You can find the latest release and additional information at: https://www.libsdl.org/
Installation instructions and a quick introduction is available in INSTALL.md
This library is distributed under the terms of the zlib license, available in LICENSE.txt.
Enjoy!
Sam Lantinga (slouken@libsdl.org)