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Convert the XRCpuImage to a Texture2D for AR Foundation.
// Source: https://github.com/Unity-Technologies/arfoundation-samples/blob/6296272a416925b56ce85470e0c7bef5c913ec0c/Assets/Scripts/CpuImageSample.cs
private static void UpdateRawImage(RawImage rawImage, XRCpuImage cpuImage)
{
// Get the texture associated with the UI.RawImage that we wish to display on screen.
var texture = rawImage.texture as Texture2D;
// If the texture hasn't yet been created, or if its dimensions have changed, (re)create the texture.
// Note: Although texture dimensions do not normally change frame-to-frame, they can change in response to
// a change in the camera resolution (for camera images) or changes to the quality of the human depth
// and human stencil buffers.
if (texture == null || texture.width != cpuImage.width || texture.height != cpuImage.height)
{
texture = new Texture2D(cpuImage.width, cpuImage.height, cpuImage.format.AsTextureFormat(), false);
rawImage.texture = texture;
}
// For display, we need to mirror about the vertical access.
var conversionParams = new XRCpuImage.ConversionParams(cpuImage, cpuImage.format.AsTextureFormat(), XRCpuImage.Transformation.MirrorY);
//Debug.Log("Texture format: " + cpuImage.format.AsTextureFormat()); -> RFloat
// Get the Texture2D's underlying pixel buffer.
var rawTextureData = texture.GetRawTextureData<byte>();
// Make sure the destination buffer is large enough to hold the converted data (they should be the same size)
Debug.Assert(rawTextureData.Length == cpuImage.GetConvertedDataSize(conversionParams.outputDimensions, conversionParams.outputFormat),
"The Texture2D is not the same size as the converted data.");
// Perform the conversion.
cpuImage.Convert(conversionParams, rawTextureData);
// "Apply" the new pixel data to the Texture2D.
texture.Apply();
}
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