The open source OpenXR runtime
d/steamvr_lh: Fix haptic pulse being set to 1 Hz when XR_FREQUENCY_UNSPECIFIED is used
The steamvr_lh driver haptic pulse was being set to 1 Hz when the haptic frequency sent from a OpenXR client was set to XR_FREQUENCY_UNSPECIFIED (0.0f), which is far too weak for games such as Beat Saber that rely completely on haptic feedback as core mechanism, now the code is adjusted to set the frequency to 200 Hz when it's 0 which is comparable to what SteamVR sets on its OpenXR runtime.
Part-of: <https://gitlab.freedesktop.org/monado/monado/-/merge_requests/2449>
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src/xrt/drivers/steamvr_lh/device.cpp
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src/xrt/drivers/steamvr_lh/device.cpp
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event.componentHandle = haptic_handle;
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event.fDurationSeconds = (float)vib.duration_ns / 1e9f;
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// 0.0f in OpenXR means let the driver determine a frequency, but
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// in OpenVR means no haptic.
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event.fFrequency = std::max(vib.frequency, 1.0f);
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// in OpenVR means no haptic, so let's set a reasonable default.
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float frequency = vib.frequency;
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if (frequency == 0.0) {
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frequency = 200.0f;
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}
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event.fFrequency = frequency;
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event.fAmplitude = vib.amplitude;
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ctx->add_haptic_event(event);