SteamVR OpenXR runtime call to XR_META_recommended_layer_resolution does not return correct rendering resolution

[velocity7]

I've been exploring sample code for running OpenXR and seeing its behavior with SteamVR as a runtime. I've noticed that when making calls to XR_META_recommended_layer_resolution, the rendering resolution it returns is 80% of the actual resolution, and if I increase the rendering resolution past 150% internally, it stops updating. Do you know why this might be the case, and/or if there are extra settings that need to be applied to get the actual custom rendering resolution being used by SteamVR via OpenXR functions?

Here's a snippet of the code in question:

if (layer != nullptr)
{
	XrResult result = xrGetInstanceProcAddr(xr_instance, "xrGetRecommendedLayerResolutionMETA", (PFN_xrVoidFunction*)&ext_xrGetRecommendedLayerResolutionMETA_fn);

	if (XR_SUCCEEDED(result)) {
		XrRecommendedLayerResolutionGetInfoMETA resolutionInfo = {};
		resolutionInfo.type = XR_TYPE_RECOMMENDED_LAYER_RESOLUTION_GET_INFO_META;
		resolutionInfo.layer = layer;
		resolutionInfo.predictedDisplayTime = frame_state.predictedDisplayTime;

		XrRecommendedLayerResolutionMETA resolution = {};

		XrResult result = ext_xrGetRecommendedLayerResolutionMETA_fn(xr_session, &resolutionInfo, &resolution);

		if (XR_SUCCEEDED(result)) {
			// Use the recommended resolution to adjust your swapchain or view rendering
			if (recommendedWidth != resolution.recommendedImageDimensions.width || recommendedHeight != resolution.recommendedImageDimensions.height)
			{
				DWORD time = timeGetTime();
				if (time < startTime)
					startTime = time;

				time = time - startTime;

				recommendedWidth = resolution.recommendedImageDimensions.width;
				recommendedHeight = resolution.recommendedImageDimensions.height;

				// Use sprintf to format the message
				char message[100];
				sprintf(message, "(%u) Meta new recommended resolution: %u x %u\n", time, recommendedWidth, recommendedHeight);

				// Send the formatted string to the Output Window
				OutputDebugStringA(message);  // Use OutputDebugStringA for ANSI strings

				printf(message);
			}
		}
		else {
			// Handle error
		}
	}
	else
	{

	}
}

This is also available via a forked repository linked here: https://github.com/velocity7/OpenXRSamples