Class OpenVRDrawTarget

src/main/java/field/graphics/vr/OpenVRDrawTarget.kt:20–458

import org.lwjgl.openvr.VR.k_unTrackedDeviceIndex_Hmd
import org.lwjgl.openvr.VR.ETrackedDeviceProperty_Prop_ModelNumber_String
import org.lwjgl.openvr.VRSystem.*
//import org.lwjgl.ovr.OVR
import java.nio.ByteBuffer
import java.nio.ByteOrder
import java.nio.LongBuffer

class OpenVRDrawTarget {

    internal var warmUp = 0

    @JvmField
    var fbo: FBO? = null

    var debug = true

    val buttons = Buttons { b ->
        val axes = listOf("button0_left", "button1_left", "button2_left", "button32_left", "button33_left", "axis0_left_x", "axis0_left_y", "axis1_left_x")
        axes.forEach { b.addAxis(it) }
        axes.forEach { b.addAxis(it.replace("left", "right")) }
    }

    var lockHead = false

    val leftTouched = mutableSetOf<String>();
    val rightTouched = mutableSetOf<String>();


    var lastTD = 0L;

    fun getPreviewTexture() = fbo


    var previouslyVisible = false
    var headOn = IdempotencyMap<Runnable>(Runnable::class.java)
    var headOff = IdempotencyMap<Runnable>(Runnable::class.java)

    fun init(w: Scene) {
        w.attach(0, "__initopenvr__") { _: Int ->
            actualInit(w)
            false
        }

        w.attach(100, "__go_openvr__") { _: Int ->

            if (fbo != null && true) stackPush().use {

                GraphicsContext.checkError {
                    "before OpenVR FBO"
                }

                val poses = TrackedDevicePose.callocStack(VR.k_unMaxTrackedDeviceCount)
                val gposes = TrackedDevicePose.callocStack(VR.k_unMaxTrackedDeviceCount) // no idea what this is?
                VRCompositor.VRCompositor_WaitGetPoses(poses, gposes)

//                val a = ByteBuffer.allocateDirect(8).order(ByteOrder.nativeOrder()).asLongBuffer()
//                a.clear()
//                VRInput.VRInput_GetActionHandle("/user/hand/left/output/haptic", a)
//                VRInput.VRInput_TriggerHapticVibrationAction(a.get(0), 0f, 1f, 100f, 100f, 0)