/**
* Returns what the device's camera is capturing as a UV texture stored in the RG channels.
*/
public Texture2D GetRealityUVTexture()
{
if (realityUVTexture != null)
{
return(realityUVTexture);
}
// Create a texture
var appEnvironment = bridge.GetXRAppEnvironment();
var envTex = appEnvironment.getManagedCameraTextures().getUvTexture();
IntPtr envTexPtr = (IntPtr)envTex.getPtr();
if (envTexPtr != IntPtr.Zero)
{
realityUVTexture = Texture2D.CreateExternalTexture(
envTex.getWidth(),
envTex.getHeight(),
TextureFormat.RG16,
false,
false,
envTexPtr);
}
else
{
int w = envTex.getWidth();
int h = envTex.getHeight();
realityUVTexture = new Texture2D(w, h, TextureFormat.RG16, false);
byte[] grayBytes = new byte[w * h * 2];
for (int i = 0; i < grayBytes.Length; i++)
{
grayBytes[i] = 128;
}
realityUVTexture.LoadRawTextureData(grayBytes);
realityUVTexture.Apply();
}
// Set point filtering just so we can see the pixels clearly
realityUVTexture.filterMode = FilterMode.Point;
// Call Apply() so it's actually uploaded to the GPU
realityUVTexture.Apply();
if (envTexPtr == IntPtr.Zero)
{
// Pass texture pointer to the plugin only if it doesn't manage one itself.
bridge.SetManagedCameraUVTexture(
realityUVTexture.GetNativeTexturePtr(),
realityUVTexture.width,
realityUVTexture.height,
GetRenderingSystem());
}
return(realityUVTexture);
}
