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OpenVR can someone explain me how to draw to vr headset?

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OpenVR can someone explain me how to draw to vr headset?
« on: January 31, 2020, 10:16:17 »
Hello there.

I watch a lot of openvr examples and most of it do VRCompositor_Submit(Eye,Texure, null, Submit).
But when i try do this it do nothing.
Can someone explain me what i do wrong?

Headset Oculus rift dk1.

Code below runs steamvr but dont draw what i want.

Code: [Select]
package openvr;

import static org.lwjgl.glfw.GLFW.glfwCreateWindow;
import static org.lwjgl.glfw.GLFW.glfwInit;
import static org.lwjgl.glfw.GLFW.glfwMakeContextCurrent;
import static org.lwjgl.glfw.GLFW.glfwPollEvents;
import static org.lwjgl.glfw.GLFW.glfwSetWindowPos;
import static org.lwjgl.glfw.GLFW.glfwSetWindowSizeLimits;
import static org.lwjgl.glfw.GLFW.glfwShowWindow;
import static org.lwjgl.glfw.GLFW.glfwSwapBuffers;
import static org.lwjgl.glfw.GLFW.glfwWindowShouldClose;
import static org.lwjgl.opengl.GL11.GL_BLEND;
import static org.lwjgl.opengl.GL11.GL_COLOR_BUFFER_BIT;
import static org.lwjgl.opengl.GL11.GL_ONE_MINUS_SRC_ALPHA;
import static org.lwjgl.opengl.GL11.GL_QUADS;
import static org.lwjgl.opengl.GL11.GL_SRC_ALPHA;
import static org.lwjgl.opengl.GL11.GL_TEXTURE_2D;
import static org.lwjgl.opengl.GL11.glBegin;
import static org.lwjgl.opengl.GL11.glBindTexture;
import static org.lwjgl.opengl.GL11.glBlendFunc;
import static org.lwjgl.opengl.GL11.glClear;
import static org.lwjgl.opengl.GL11.glClearColor;
import static org.lwjgl.opengl.GL11.glColor3f;
import static org.lwjgl.opengl.GL11.glEnable;
import static org.lwjgl.opengl.GL11.glEnd;
import static org.lwjgl.opengl.GL11.glOrtho;
import static org.lwjgl.opengl.GL11.glTexCoord2f;
import static org.lwjgl.opengl.GL11.glVertex2f;
import static org.lwjgl.opengl.GL11.glViewport;
import static org.lwjgl.opengl.GL12.GL_TEXTURE_3D;
import java.awt.Dimension;
import java.awt.Toolkit;
import org.lwjgl.opengl.GL;
import org.lwjgl.opengl.GL11;
import org.lwjgl.openvr.*;
import org.lwjgl.system.*;
import java.nio.*;
import static org.lwjgl.openvr.VR.*;
import static org.lwjgl.openvr.VRSystem.*;
import static org.lwjgl.system.MemoryStack.*;
import graphics.frameBuffers.frameBuffer;
import voxelRayCast.GSTextures;

public class helpme {

static long window;
static Dimension screenSize=Toolkit.getDefaultToolkit().getScreenSize();
static int w=(int) screenSize.getWidth()/2;
static int h=(int) screenSize.getHeight()/2;

public static GSTextures tex0=new GSTextures();

public static int VRtoken;

    public void run(){//START HERE---START HERE---START HERE---START HERE---START HERE---START HERE---START HERE---START HERE---START HERE---START HERE
    HelloOpenVR();
initWindow();
tex0.initText();
DrawLoop();
}

    public static void HelloOpenVR(){

        System.err.println("VR_IsRuntimeInstalled()="+VR_IsRuntimeInstalled());
        System.err.println("VR_RuntimePath() ="+VR_RuntimePath());
        System.err.println("VR_IsHmdPresent()="+VR_IsHmdPresent());

        try(MemoryStack stack=stackPush()){
            IntBuffer peError=stack.mallocInt(1);

            VRtoken=VR_InitInternal(peError, VR.EVRApplicationType_VRApplication_Overlay);
            if(peError.get(0)==0){
                OpenVR.create(VRtoken);

                System.err.println("Model Number:"+VRSystem_GetStringTrackedDeviceProperty(
                    k_unTrackedDeviceIndex_Hmd,
                    ETrackedDeviceProperty_Prop_ModelNumber_String,
                    peError
                ));
                System.err.println("Serial Number:"+VRSystem_GetStringTrackedDeviceProperty(
                    k_unTrackedDeviceIndex_Hmd,
                    ETrackedDeviceProperty_Prop_SerialNumber_String,
                    peError
                ));

                IntBuffer www=stack.mallocInt(1);
                IntBuffer hhh=stack.mallocInt(1);
                VRSystem_GetRecommendedRenderTargetSize(www, hhh);
                System.err.println("Recommended width :"+www.get(0));
                System.err.println("Recommended height:"+hhh.get(0));
            }else{
                System.out.println("INIT ERROR SYMBOL:"+VR_GetVRInitErrorAsSymbol(peError.get(0)));
                System.out.println("INIT ERROR  DESCR:"+VR_GetVRInitErrorAsEnglishDescription(peError.get(0)));
            }
        }
    }

public void initWindow(){

    System.out.println("win Init Start.");

    if(glfwInit()!=true){
        System.err.println("INIT_GLFW_FAILED");
System.exit(1);
    }
    window=glfwCreateWindow( w, h, "test", 0, 0);
    glfwSetWindowPos(window, w/2, h/2);
    glfwSetWindowSizeLimits(window, w, h, w, h);
    glfwShowWindow(window);
    glfwMakeContextCurrent(window);
    GL.createCapabilities();
    glViewport(0, 0, w, h);
    glOrtho(0, w, h, 0, -1, 1);
    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
    glEnable(GL_TEXTURE_2D);
    glEnable(GL_TEXTURE_3D);

    System.out.println("win Init End.");
}

public void Draw(){

    glEnable(GL_BLEND);
    GL11.glViewport(0, 0, w, h);

    glColor3f(0,0,1);

    glBegin(GL_QUADS);
        glVertex2f(0, 0);
        glVertex2f(w, 0);
        glVertex2f(w, h);
        glVertex2f(0, h);
        glEnd();
}

public void FinalDraw(int tex){

    glEnable(GL_BLEND);
    GL11.glViewport(0, 0, w, h);

    glBindTexture(GL_TEXTURE_2D, tex);

    glBegin(GL_QUADS);
    glTexCoord2f(0,1);
        glVertex2f(0, 0);
        glTexCoord2f(1,1);
        glVertex2f(w, 0);
        glTexCoord2f(1,0);
        glVertex2f(w, h);
        glTexCoord2f(0,0);
        glVertex2f(0, h);
        glEnd();
       
            glBindTexture(GL_TEXTURE_2D, 0);
}

    public void DrawLoop(){
    frameBuffer fb=new frameBuffer(w, h);
   
while(!glfwWindowShouldClose(window)){
    glfwPollEvents();
            glClearColor(0, 0, 0, 1);
            glClear(GL_COLOR_BUFFER_BIT);

            fb.updateTexture(w,h);
            fb.bindFrameBuffer();
            Draw();//draw blue screen
            fb.unbindCurrentFrameBuffer();
            FinalDraw(fb.getTexture());//draw frame buffer to window
       
            Texture t1=Texture.create();
             t1.set(tex0.noise.get(), VR.ETextureType_TextureType_OpenGL, VR.EColorSpace_ColorSpace_Gamma);
                VRCompositor.VRCompositor_Submit(VR.EVREye_Eye_Left, t1, null, VR.EVRSubmitFlags_Submit_GlRenderBuffer);

Texture t2=Texture.create();
                t2.set(fb.getTexture(), VR.ETextureType_TextureType_OpenGL, VR.EColorSpace_ColorSpace_Gamma);
VRCompositor.VRCompositor_Submit(VR.EVREye_Eye_Right, t2, null, VR.EVRSubmitFlags_Submit_GlRenderBuffer);

glfwSwapBuffers(window);
}
VR.VR_ShutdownInternal();
}
}