我开始使用Java中的lwjgl（2.9.1）进行3D游戏。当我创建Display时，一切都是正确的，但是当我添加了Loader，Renderer和RawModel类时，java会给我这个错误：
Exception in thread "main" java.lang.IllegalStateException: Function is not supported
at org.lwjgl.BufferChecks.checkFunctionAddress(BufferChecks.java:58)
at org.lwjgl.opengl.GL30.glGenVertexArrays(GL30.java:1550)
at com.render.Loader.createVAO(Loader.java:39)
at com.render.Loader.loadVAO(Loader.java:20)
at com.Tester.MainLoop.main(MainLoop.java:29)
有人可以帮助我吗？
这是我的Java代码：
渲染器类：
public class Renderer{
public void prepare(){
GL11.glClearColor(1, 0, 0, 1);
GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);
}
public void render(RawModel model){
GL30.glBindVertexArray(model.getVaoID());
GL20.glEnableVertexAttribArray(0);
GL11.glDrawArrays(GL11.GL_TRIANGLES,0,model.getVertexCount());
GL20.glDisableVertexAttribArray(0);
GL30.glBindVertexArray(0);
}
}
Loader class：
public class Loader {
private List<Integer> vaos = new ArrayList<Integer>();
private List<Integer> vbos = new ArrayList<Integer>();
public RawModel loadVAO(float[] pos){
int vaoID = createVAO();
storeDataInAttributeList(0,pos);
unbindVAO();
return new RawModel(vaoID, pos.length/3);
}
public void cleanUp(){
for(int vao:vaos){
GL30.glDeleteVertexArrays(vao);
}
for(int vbo:vbos){
GL15.glDeleteBuffers(vbo);
}
}
private int createVAO(){
int vaoID = GL30.glGenVertexArrays();
vaos.add(vaoID);
GL30.glBindVertexArray(vaoID);
return vaoID;
}
private void storeDataInAttributeList(int attrNum, float[] data){
int vboID = GL15.glGenBuffers();
vbos.add(vboID);
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, vboID);
FloatBuffer buffer = storeDataInFloatBuffer(data);
GL15.glBufferData(GL15.GL_ARRAY_BUFFER, buffer, GL15.GL_STATIC_DRAW);
GL20.glVertexAttribPointer(attrNum, 3, GL11.GL_FLOAT, false, 0, 0);
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
}
private void unbindVAO(){
GL30.glBindVertexArray(0);
}
private FloatBuffer storeDataInFloatBuffer(float[] data){
FloatBuffer buffer = BufferUtils.createFloatBuffer(data.length);
buffer.put(data);
buffer.flip();
return buffer;
}
}
RawModel类：
public class RawModel {
private int vaoID;
private int vertexCount;
public RawModel(int id, int num){
this.vaoID = id;
this.vertexCount = num;
}
public int getVaoID(){
return this.vaoID;
}
public int getVertexCount(){
return this.vertexCount;
}
}
DisplayManager类：
public class DisplayManager{
private static final int width = 1280;
private static final int height = 1280;
private static final int fps = 120;
public static void createDisplay(){
ContextAttribs attribs = new ContextAttribs(3,2).withForwardCompatible(true).withProfileCore(true);
try{
System.setProperty("org.lwjgl.opengl.Display.allowSoftwareOpenGL", "true");
Display.setDisplayMode(new DisplayMode(width,height));
Display.create(new PixelFormat(), attribs);
Display.setTitle("OpenGL 3D Game");
}catch(LWJGLException e){
e.printStackTrace();
}
GL11.glViewport(0, 0, width, height);
}
public static void updateDisplay(){
Display.sync(fps);
Display.update();
}
public static void closeDisplay(){
Display.destroy();
}
}
MainLoop类：
public class MainLoop{
public static void main(String[] args){
DisplayManager.createDisplay();
Loader loader = new Loader();
Renderer renderer = new Renderer();
float[] vert = {
-0.5f,0.5f,0f,
-0.5f,-0.5f,0f,
0.5f,-0.5f,0f,
0.5f,-0.5f,0f,
0.5f,0.5f,0f,
-0.5f,0.5f,0f
};
RawModel model = loader.loadVAO(vert);
while(!Display.isCloseRequested()){
renderer.prepare();
renderer.render(model);
DisplayManager.updateDisplay();
}
loader.cleanUp();
DisplayManager.closeDisplay();
}
}