我在OpenGL中使用JAVA创建旋转骰子动画时遇到问题。立方体是可见的，有色的和旋转的，但我还需要在每一侧不同的纹理。现在，我无法看到任何纹理，但是当我使用println时，似乎所有纹理都被启动和缓冲。
public class Renderer implements GLEventListener, MouseListener,
MouseMotionListener, KeyListener {
private int rotationAngle;
private boolean isClicked = false;
private static int[] textures = new int[6];
private String textureList[] = { "Dice1.jpg","Dice2.jpg","Dice3.jpg","Dice4.jpg","Dice5.jpg","Dice6.jpg" };
private Texture texture;
@Override
public void display(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT);
gl.glLoadIdentity();
glu.gluLookAt(
0f, 0f, 3f,
0f, 0f, 0f,
0f, 1f, 0f
);
gl.glRotatef(rotationAngle, 1f, 0f, 1f);
draw(gl);
if(!isClicked){
rotationAngle += 3f;
} else {
rotationAngle += 0f;
}
if (rotationAngle >= 360f)
rotationAngle %= 360f;
}
@Override
public void init(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
gl.glGenTextures(6, textures, 0);
for (int i=0;i<6;i++)
{
//...and bind it to our array
gl.glBindTexture(GL2.GL_TEXTURE_2D, textures[i]);
gl.glEnable(GL2.GL_TEXTURE_2D);
File file = new File(textureList[i]);
BufferedImage image = null;
try {
image = ImageIO.read(file);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
texture = TextureIO.newTexture(file, false);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if(image!=null && texture != null){
ByteBuffer buf = TextureLoader.convertImageData(image);
gl.glTexImage2D(GL2.GL_TEXTURE_2D, 0, 3, 100, 100, 0, GL2.GL_BGR, GL2.GL_UNSIGNED_BYTE, buf);
//Create Nearest Filtered Texture
gl.glTexParameterf(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_MIN_FILTER, GL2.GL_LINEAR);
gl.glTexParameterf(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_MAG_FILTER, GL2.GL_NEAREST);
//Different possible texture parameters, e.g. GL2.GL_CLAMP_TO_EDGE
gl.glTexParameterf(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_WRAP_S, GL2.GL_REPEAT);
gl.glTexParameterf(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_WRAP_T, GL2.GL_REPEAT);
file = null;
}
}
gl.glEnable(GL2.GL_DEPTH_TEST);
gl.glDepthFunc(GL2.GL_LEQUAL);
gl.glClearDepthf(1.0f);
}
@Override
public void reshape(GLAutoDrawable drawable, int x, int y, int width,
int height) {
GL2 gl = drawable.getGL().getGL2();
gl.glViewport(x, y, width, height);
gl.glMatrixMode(GL2.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluPerspective(60.0f, (float) width/height, 1f, 10f);
gl.glMatrixMode(GL2.GL_MODELVIEW);
}
private GLUgl2 glu = new GLUgl2();
public static void draw(GL2 gl){
//Point to our buffers
gl.glBindTexture(GL2.GL_TEXTURE_2D, textures[0]); // Texture 0 = 0.bmp
gl.glBegin(GL2.GL_QUADS);
// Front Face Of Cube
gl.glColor3f(0.0f, 0.0f, 1.0f);
gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f(-1.0f, -1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f( 1.0f, -1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f, 1.0f);
gl.glEnd();
gl.glBindTexture(GL2.GL_TEXTURE_2D, textures[1]); // Texture 1 = 1.bmp
gl.glBegin(GL2.GL_QUADS);
// Back Face Of Cube
gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f(-1.0f, -1.0f, -1.0f);
gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f, -1.0f);
gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f, -1.0f);
gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f( 1.0f, -1.0f, -1.0f);
gl.glEnd();
gl.glBindTexture(GL2.GL_TEXTURE_2D, textures[2]); // Texture 2 = 2.bmp
gl.glBegin(GL2.GL_QUADS);
// Top Face Of Cube
gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f, -1.0f);
gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f(-1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f( 1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f, -1.0f);
gl.glEnd();
gl.glBindTexture(GL2.GL_TEXTURE_2D, textures[3]); // Texture 3 = 3.bmp
gl.glBegin(GL2.GL_QUADS);
// Bottom Face Of Cube
gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f(-1.0f, -1.0f, -1.0f);
gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f( 1.0f, -1.0f, -1.0f);
gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f( 1.0f, -1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f(-1.0f, -1.0f, 1.0f);
gl.glEnd();
gl.glBindTexture(GL2.GL_TEXTURE_2D, textures[4]); // Texture 4 = = 4.bmp
gl.glBegin(GL2.GL_QUADS);
// Right face Of Cube
gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f( 1.0f, -1.0f, -1.0f);
gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f, -1.0f);
gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f( 1.0f, -1.0f, 1.0f);
gl.glEnd();
gl.glBindTexture(GL2.GL_TEXTURE_2D, textures[5]); // Texture 5 = 5.bmp
gl.glBegin(GL2.GL_QUADS);
// Left Face Of Cube
gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f(-1.0f, -1.0f, -1.0f);
gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f(-1.0f, -1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f, -1.0f);
gl.glEnd();
}
@Override public void dispose(GLAutoDrawable drawable) {}
public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {}
public void mouseClicked(MouseEvent e) { isClicked = true; }
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void mouseReleased(MouseEvent e) {}
public void mouseMoved(MouseEvent e) {}
public void keyReleased(KeyEvent e) {}
public void keyTyped(KeyEvent e) {}
@Override public void keyPressed(KeyEvent arg0) {}
@Override public void mouseDragged(MouseEvent arg0) {}
@Override public void mousePressed(MouseEvent arg0) {}
}
答案 0 :(得分：0)
首先，您可以看一下移植到JOGL 2的OpenGL Red Book的这个简单示例： texbind.java
您应该提前致电gl.glEnable（GL2.GL_TEXTURE_2D）（参见上面引用的代码）。
此外，您将高级JOGL API与低级API混合，这是一个坏主意。如果你想使用Texture类，调用enable（），bind（）和disable（），看看its online Java documentation，不要通过调用glGenTextures生成第二个纹理标识符，它已经是在Texture类中完成。
TextureLoader.convertImageData（）没用，它不是来自JOGL。 TextureData，TextureIO，AWTTextureData和AWTTextureIO就够了，做得很好。
最后，绑定正确的纹理，包含一些纹理数据的纹理，调用Texture.bind（）。
（可选）使用直接NIO缓冲区，使用Buffers.newDirect * Buffer（）创建它们，否则JOGL将不得不这样做。避免在整数数组中存储纹理标识符，而是使用小型直接NIO缓冲区。可以使用包含所有现有图像的单个图像文件，然后创建单个纹理并修改纹理坐标但我假设您的纹理非常简单，您可以使用纹理继续每张脸。