app/src/main/java/chess/view/DDDrender/Camera.java

@@ -10,7 +10,7 @@ public class Camera {
     public static final float zNear = 0.01f;
     public static final float zFar = 1000.0f;
 
-    private static final Vector3f up = new Vector3f(0.0f, 1.0f, 0.0f);
+    private static final Vector3f up = new Vector3f(0.0f, -1.0f, 0.0f);
     private static final Vector3f center = new Vector3f(0.0f, 0.0f, 0.0f);
 
     private final float distance = 1.5f;

app/src/main/java/chess/view/DDDrender/DDDView.java

@@ -232,12 +232,10 @@ public class DDDView extends GameAdaptator implements GameListener {
 	}
 
 	public void run() {
-		/*
 		this.window.addRegularTask((delta) -> {
 			final float angle = 1f; 
 			this.camera.setRotateAngle(this.camera.getRotateAngle() + angle * delta);
 		});
-		*/
 		this.window.run();
 
 		// free OpenGL resources

app/src/main/java/chess/view/DDDrender/Renderer.java

@@ -1,9 +1,16 @@
 package chess.view.DDDrender;
 
+import static org.lwjgl.opengl.GL11.GL_DEPTH_COMPONENT;
+import static org.lwjgl.opengl.GL11.GL_RGB;
+import static org.lwjgl.opengl.GL11.GL_TEXTURE_2D;
+import static org.lwjgl.opengl.GL11.GL_UNSIGNED_BYTE;
 import static org.lwjgl.opengl.GL11.GL_UNSIGNED_INT;
+import static org.lwjgl.opengl.GL11.glBindTexture;
+import static org.lwjgl.opengl.GL11.glTexImage2D;
 
 import java.io.Closeable;
 import java.io.IOException;
+import java.nio.IntBuffer;
 
 import org.joml.Matrix4f;
 import org.joml.Vector3f;
@@ -14,7 +21,7 @@ import chess.view.DDDrender.shader.BoardShader;
 import chess.view.DDDrender.shader.PieceShader;
 import chess.view.DDDrender.shader.ShaderProgram;
 
-public class Renderer implements Closeable{
+public class Renderer implements Closeable {
 	private BoardShader boardShader;
 	private PieceShader pieceShader;
 
@@ -26,6 +33,34 @@ public class Renderer implements Closeable{
 	public void Init() {
 		boardShader.LoadShader();
 		pieceShader.LoadShader();
+
+		// The frame buffer
+		int fbo = GL30.glGenFramebuffers();
+		GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, fbo);
+
+		// The texture
+		int renderTexture = GL30.glGenTextures();
+		glBindTexture(GL_TEXTURE_2D, renderTexture);
+
+		System.out.println(renderTexture);
+
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 800, 800, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
+
+		GL30.glTexParameteri(GL_TEXTURE_2D, GL30.GL_TEXTURE_MAG_FILTER, GL30.GL_NEAREST);
+		GL30.glTexParameteri(GL_TEXTURE_2D, GL30.GL_TEXTURE_MIN_FILTER, GL30.GL_NEAREST);
+
+		// The depth buffer
+		int depthBuffer = GL30.glGenRenderbuffers();
+		GL30.glBindRenderbuffer(GL30.GL_RENDERBUFFER, depthBuffer);
+		GL30.glRenderbufferStorage(GL30.GL_RENDERBUFFER, GL_DEPTH_COMPONENT, 800, 800);
+		GL30.glFramebufferRenderbuffer(GL30.GL_FRAMEBUFFER, GL30.GL_DEPTH_ATTACHMENT, GL30.GL_RENDERBUFFER,
+				depthBuffer);
+
+		// Set "renderedTexture" as our colour attachement #0
+		GL30.glFramebufferTexture2D(GL30.GL_FRAMEBUFFER, GL30.GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, renderTexture, 0);
+		// Set the list of draw buffers.
+		int[] drawBuffers = { GL30.GL_COLOR_ATTACHMENT0 };
+		GL30.glDrawBuffers(drawBuffers);
 	}
 
 	public void Update(Camera cam) {

app/src/main/java/chess/view/DDDrender/Window.java

@@ -13,6 +13,7 @@ import chess.view.DDDrender.world.World;
 import common.Signal1;
 import imgui.ImFontConfig;
 import imgui.ImGui;
+import imgui.ImVec2;
 import imgui.gl3.ImGuiImplGl3;
 import imgui.glfw.ImGuiImplGlfw;
 
@@ -176,9 +177,13 @@ public class Window implements Closeable {
 	}
 
 	private void render(float delta, float aspectRatio) {
-		cam.setAspectRatio(aspectRatio);
+		cam.setAspectRatio(1.0f);
+		GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 1);
+		glViewport(0, 0, 800, 800);
+		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the framebuffer
 		renderer.Update(cam);
 		renderWorld();
+		GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 0);
 	}
 
 	private void renderWorld() {
@@ -226,6 +231,15 @@ public class Window implements Closeable {
 		ImGui.newFrame();
 	}
 
+	private void renderWindow() {
+		// ImGui.showDemoWindow();
+
+		ImGui.begin("Hello");
+		ImGui.button("test");
+		ImGui.image(1, new ImVec2(800, 800));
+		ImGui.end();
+	}
+
 	private void loop() {
 
 		// Set the clear color
@@ -255,7 +269,7 @@ public class Window implements Closeable {
 			float deltaTime = (float) (currentTime - lastTime);
 			render(deltaTime, (float) width[0] / (float) height[0]);
 
-			// ImGui.showDemoWindow();
+			renderWindow();
 			ImGui.render();
 			implGl3.renderDrawData(ImGui.getDrawData());
 

app/src/main/java/chess/view/DDDrender/shader/BoardShader.java

@@ -46,7 +46,7 @@ public class BoardShader extends ShaderProgram {
 			in vec3 toCameraVector;
 			in vec3 surfaceNormal;
 
-			out vec4 out_color;
+			layout(location = 0) out vec4 out_color;
 
 			void main(void){
 				const float shineDamper = 10.0;

app/src/main/java/chess/view/DDDrender/shader/PieceShader.java

@@ -48,7 +48,7 @@ public class PieceShader extends ShaderProgram {
 
 			uniform vec3 modelColor;
 
-			out vec4 out_color;
+			layout(location = 0) out vec4 out_color;
 
 			void main(void){
 				const float shineDamper = 10.0;