feat: add basic renderer

conveyor.conf

@@ -27,18 +27,17 @@ app {
   updates = aggressive
 
   jvm {
-    extract-native-libraries = true
+    extract-native-libraries = false
     system-properties = {
-      "org.lwjgl.librarypath" = <libpath>
+//      "org.lwjgl.librarypath" = <libpath>
       "org.lwjgl.util.Debug" = true
     }
     // Required options because module is converted to jar (https://github.com/hydraulic-software/conveyor/issues/55)
-    options += "--enable-native-access=ALL-UNNAMED"
+//    options += "--enable-native-access=ALL-UNNAMED"
-    options += "--add-opens=javafx.graphics/javafx.scene=ALL-UNNAMED"
+//    options += "--add-opens=javafx.graphics/javafx.scene=ALL-UNNAMED"
-    modules = [javafx.base, javafx.controls, javafx.fxml]
+//    modules = [javafx.base, javafx.controls, javafx.fxml]
   }
 }
 
 app.windows.console = true
-
 conveyor.compatibility-level = 8

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.1-rc-3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

src/main/java/com/lenis0012/oraksi/HelloController.java

@@ -1,8 +1,15 @@
 package com.lenis0012.oraksi;
 
 
+import com.lenis0012.oraksi.engine.OraksiRenderer;
+import com.lenis0012.oraksi.lwjgl.LwjglNode;
+import javafx.fxml.FXML;
+
 public class HelloController {
+    @FXML
+    private LwjglNode sceneExplorer;
 
     public void initialize() {
+        sceneExplorer.setRenderFunction(new OraksiRenderer());
     }
 }

src/main/java/com/lenis0012/oraksi/engine/OraksiRenderer.java

@@ -0,0 +1,105 @@
+package com.lenis0012.oraksi.engine;
+
+import com.lenis0012.oraksi.lwjgl.Renderer;
+import org.lwjgl.system.MemoryStack;
+
+import java.io.InputStream;
+import java.nio.IntBuffer;
+import java.nio.charset.StandardCharsets;
+
+import static org.lwjgl.opengl.GL11.*;
+import static org.lwjgl.opengl.GL15.*;
+import static org.lwjgl.opengl.GL30.*;
+import static org.lwjgl.system.MemoryStack.*;
+
+public class OraksiRenderer implements Renderer {
+    private static final float[] INPUT = {
+        -0.5f, -0.5f, 0.0f,
+        0.5f, -0.5f, 0.0f,
+        0.0f,  0.5f, 0.0f
+    };
+
+    private boolean initialized = false;
+    private int vaoId;
+    private int vboId;
+    private int shaderId;
+
+    @Override
+    public void destroy() {
+        if(vboId != 0) {
+            glDeleteBuffers(vboId);
+        }
+        if(vaoId != 0) {
+            glDeleteVertexArrays(vaoId);
+        }
+        if(shaderId != 0) {
+            glDeleteProgram(shaderId);
+        }
+    }
+
+    @Override
+    public void render() {
+        if(!initialized) {
+            initialize();
+        }
+
+        glUseProgram(shaderId);
+        glBindVertexArray(vaoId);
+        glDrawArrays(GL_TRIANGLES, 0, 3);
+    }
+
+    public void initialize() {
+        this.initialized = true;
+
+        this.vaoId = glGenVertexArrays();
+        glBindVertexArray(vaoId);
+
+        this.vboId = glGenBuffers();
+        glBindBuffer(GL_ARRAY_BUFFER, vboId);
+        glBufferData(GL_ARRAY_BUFFER, INPUT, GL_STATIC_DRAW);
+        glVertexAttribPointer(0, 3, GL_FLOAT, false, 0, 0);
+        glEnableVertexAttribArray(0);
+
+        int vertexShader = glCreateShader(GL_VERTEX_SHADER);
+        try(
+                InputStream inputStream = OraksiRenderer.class.getResourceAsStream("/shaders/main.vert");
+                MemoryStack stack = stackPush()
+        ) {
+            String source = new String(inputStream.readAllBytes(), StandardCharsets.UTF_8);
+            glShaderSource(vertexShader, source);
+            glCompileShader(vertexShader);
+            IntBuffer success = stack.mallocInt(1);
+            glGetShaderiv(vertexShader, GL_COMPILE_STATUS, success);
+            if(success.get(0) == GL_FALSE) {
+                throw new RuntimeException("Failed to compile shader: " + glGetShaderInfoLog(vertexShader));
+            }
+        } catch (Exception e) {
+            throw new RuntimeException("Failed to load shader", e);
+        }
+
+        int fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
+        try (
+                InputStream inputStream = OraksiRenderer.class.getResourceAsStream("/shaders/main.frag");
+                MemoryStack stack = stackPush();
+        ) {
+            String source = new String(inputStream.readAllBytes(), StandardCharsets.UTF_8);
+            glShaderSource(fragmentShader, source);
+            glCompileShader(fragmentShader);
+            IntBuffer success = stack.mallocInt(1);
+            glGetShaderiv(fragmentShader, GL_COMPILE_STATUS, success);
+            if(success.get(0) == GL_FALSE) {
+                throw new RuntimeException("Failed to compile shader: " + glGetShaderInfoLog(fragmentShader));
+            }
+        } catch (Exception e) {
+            throw new RuntimeException("Failed to load shader", e);
+        }
+
+        this.shaderId = glCreateProgram();
+        glAttachShader(shaderId, vertexShader);
+        glAttachShader(shaderId, fragmentShader);
+        glLinkProgram(shaderId);
+
+        glDeleteShader(vertexShader);
+        glDeleteShader(fragmentShader);
+    }
+}

src/main/java/com/lenis0012/oraksi/lwjgl/LwjglNode.java

@@ -33,7 +33,7 @@ public class LwjglNode extends Region {
         DEFAULT_WINDOW_HINTS.put(hint, value);
     }
 
-    private final ObjectProperty<Runnable> renderFunction;
+    private final ObjectProperty<Renderer> renderFunction;
     private final ReadOnlyLongWrapper glfwWindowWrapper;
     private final ObjectProperty<Color> clearColor;
     private BooleanExpression treeVisibleProperty;
@@ -46,7 +46,19 @@ public class LwjglNode extends Region {
     public LwjglNode() {
         super();
 
-        this.renderFunction = new SimpleObjectProperty<>(this, "renderFunction", () -> {});
+        this.renderFunction = new SimpleObjectProperty<>(this, "renderFunction", new Renderer() {
+            @Override
+            public void initialize() {
+            }
+
+            @Override
+            public void render() {
+            }
+
+            @Override
+            public void destroy() {
+            }
+        });
         this.glfwWindowWrapper = new ReadOnlyLongWrapper(this, "glfwWindow", 0);
         this.clearColor = new SimpleObjectProperty<>(this, "clearColor", Color.color(0.2f, 0.05f, 0.1f));
 
@@ -120,15 +132,15 @@ public class LwjglNode extends Region {
         });
     }
 
-    public ObjectProperty<Runnable> renderFunctionProperty() {
+    public ObjectProperty<Renderer> renderFunctionProperty() {
         return renderFunction;
     }
 
-    public void setRenderFunction(Runnable renderFunction) {
+    public void setRenderFunction(Renderer renderFunction) {
         this.renderFunction.set(renderFunction);
     }
 
-    public Runnable getRenderFunction() {
+    public Renderer getRenderFunction() {
         return renderFunction.get();
     }
 
@@ -257,7 +269,7 @@ public class LwjglNode extends Region {
                 }
 
                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the framebuffer
-                renderFunction.get().run();
+                renderFunction.get().render();
                 glfwSwapBuffers(window); // swap the color buffers
 
                 // Poll for window events. The key callback above will only be
@@ -267,6 +279,7 @@ public class LwjglNode extends Region {
         }
 
         private void cleanup() {
+            renderFunction.get().destroy();
             Win32Api.setParent(MemorySegment.ofAddress(glfwGetWin32Window(window)), MemorySegment.NULL);
             glfwFreeCallbacks(window);
             glfwDestroyWindow(window);

src/main/java/com/lenis0012/oraksi/lwjgl/Renderer.java

@@ -0,0 +1,10 @@
+package com.lenis0012.oraksi.lwjgl;
+
+public interface Renderer {
+
+    void initialize();
+
+    void render();
+
+    void destroy();
+}

src/main/java/module-info.java

@@ -10,9 +10,9 @@ module oraksi {
 
     requires org.lwjgl.glfw;
     requires org.lwjgl.opengl;
-//    requires org.lwjgl.natives;
+    requires org.lwjgl.natives;
-//    requires org.lwjgl.glfw.natives;
+    requires org.lwjgl.glfw.natives;
-//    requires org.lwjgl.opengl.natives;
+    requires org.lwjgl.opengl.natives;
 
     opens com.lenis0012.oraksi to javafx.fxml;
     opens com.lenis0012.oraksi.lwjgl to javafx.fxml;

src/main/resources/shaders/main.frag

@@ -0,0 +1,7 @@
+#version 330 core
+
+out vec4 FragColor;
+
+void main() {
+    FragColor = vec4(1.0f, 0.5f, 0.2f, 1.0f);
+}

src/main/resources/shaders/main.vert

@@ -0,0 +1,7 @@
+#version 330 core
+
+layout (location = 0) in vec3 aPos;
+
+void main() {
+    gl_Position = vec4(aPos, 1.0);
+}