jogamp - Re: JOGL GL2.GL

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Re: JOGL GL2.GL_REPEAT

Posted by Pixelapp on Nov 06, 2011; 2:21am
URL: https://forum.jogamp.org/JOGL-GL2-GL-REPEAT-tp3483478p3483910.html

Would someone try this code and tell me how to get it to repeat (GL_REPEAT).

Please try it.

package pixelapp.samplecode;
import java.awt.Cursor;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;

import javax.media.opengl.GL2;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLCapabilities;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.GLProfile;
import javax.media.opengl.awt.GLCanvas;
import javax.swing.JFrame;

import com.jogamp.opengl.util.FPSAnimator;
import com.jogamp.opengl.util.texture.Texture;
import com.jogamp.opengl.util.texture.TextureCoords;
import com.jogamp.opengl.util.texture.TextureIO;

public class SampleCode implements GLEventListener
{

// Load Textures
private static ClassLoader cl;
private String file[] = {"wlap1.png"
};
private String folder = "pixelapp/samplecode/images/";
private JFrame myFrame; // Create JFrame object.
private final int ZERO = 0;
private int count = ZERO;
private int acc = ZERO; // Accumulator
private int NUMTEXTURES = 1; // Number of textures
private Texture[] tex = new Texture[NUMTEXTURES];
private String[] fileName = new String[NUMTEXTURES];
private TextureCoords[] tc = new TextureCoords[NUMTEXTURES];
private int cubeAcc = 0;

// To calculate textures
private final int SQUARE_VERT = 4;
private float one = 1;

// Display
private int NUM_CUBES_DISPLAY = 1;
private final int MAX_NUM_CUBES_DISPLAY = 1;
private FloatBuffer[] mVertexBufferDisplay = new FloatBuffer[MAX_NUM_CUBES_DISPLAY];
private FloatBuffer[] mColorBufferDisplay = new FloatBuffer[MAX_NUM_CUBES_DISPLAY];
private ByteBuffer[] mIndexBufferDisplay = new ByteBuffer[MAX_NUM_CUBES_DISPLAY];
private FloatBuffer[] mTexBufferDisplay = new FloatBuffer[MAX_NUM_CUBES_DISPLAY];
private ByteBuffer[] vbbDisplay = new ByteBuffer[MAX_NUM_CUBES_DISPLAY];
private ByteBuffer[] cbbDisplay = new ByteBuffer[MAX_NUM_CUBES_DISPLAY];
private ByteBuffer[] tbbDisplay = new ByteBuffer[MAX_NUM_CUBES_DISPLAY];

private float[] cubeFillerVDisplay = {
1f, 1f, 0f,
1f, -1, 0f,
-1f, -1f, 0f,
-1f, 1f, 0f,
};

private float[] cubeFillerCDisplay = {
one, one, one, one,
one, one, one, one,
one, one, one, one,
one , one, one, one, };

private byte[] cubeFillerIDisplay = { 1 - 1, 4 - 1, 3 - 1, 1 - 1, 3 - 1,
2 - 1, };

private GLCanvas miCanvas;
private FPSAnimator animator;

public SampleCode()
{
// Create JFrame object.
myFrame = new JFrame("Wavelogy");

// Close program on Finish.
myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

GLProfile glp = GLProfile.getDefault();
GLCapabilities caps = new GLCapabilities(glp);
miCanvas = new GLCanvas(caps);

// Indicate Canvas to detect the events of OpenGL in this Class.
miCanvas.addGLEventListener(this);

miCanvas.setFocusable(true); // To receive key event
miCanvas.requestFocus();

// Insert Canvas in the Frame.
myFrame.add(miCanvas);

// Hide Cursor
// Transparent 16 x 16 pixel cursor image.
BufferedImage cursorImg = new BufferedImage(16, 16,
BufferedImage.TYPE_INT_ARGB);

// Create a new blank cursor.
Cursor blankCursor = Toolkit.getDefaultToolkit().createCustomCursor(
cursorImg, new Point(0, 0), "blank cursor");

// Set the blank cursor to the JFrame.
myFrame.getContentPane().setCursor(blankCursor);

// Size of the window
myFrame.setSize(1280, 600);

// Eliminates the windows frames look.
myFrame.setUndecorated(true);

/**
* Full Screen Mode
*/
GraphicsEnvironment env = GraphicsEnvironment.

getLocalGraphicsEnvironment();

GraphicsDevice device = env.getDefaultScreenDevice();

device.setFullScreenWindow(myFrame);

// Renders continuously JOGL2.
animator = new FPSAnimator(miCanvas, 30);
animator.add(miCanvas);
animator.start();

// Get current classloader
cl = this.getClass().getClassLoader();

// Display
// Buffers to be passed to gl*Pointer() functions
// must be direct, i.e., they must be placed on the
// native heap where the garbage collector cannot
// move them.
//
// Buffers with multi-byte datatypes (e.g., short, int, float)
// must have their byte order set to native order

for (cubeAcc = ZERO; cubeAcc < NUM_CUBES_DISPLAY; cubeAcc++) {
vbbDisplay[cubeAcc] = ByteBuffer
.allocateDirect(cubeFillerVDisplay.length * 4);
vbbDisplay[cubeAcc].order(ByteOrder.nativeOrder());
mVertexBufferDisplay[cubeAcc] = vbbDisplay[cubeAcc].asFloatBuffer();
mVertexBufferDisplay[cubeAcc].put(cubeFillerVDisplay);
mVertexBufferDisplay[cubeAcc].position(0);

}

for (cubeAcc = ZERO; cubeAcc < NUM_CUBES_DISPLAY; cubeAcc++) {
cbbDisplay[cubeAcc] = ByteBuffer
.allocateDirect(cubeFillerCDisplay.length * 4);
cbbDisplay[cubeAcc].order(ByteOrder.nativeOrder());
mColorBufferDisplay[cubeAcc] = cbbDisplay[cubeAcc].asFloatBuffer();
mColorBufferDisplay[cubeAcc].put(cubeFillerCDisplay);
mColorBufferDisplay[cubeAcc].position(0);

}

for (cubeAcc = ZERO; cubeAcc < NUM_CUBES_DISPLAY; cubeAcc++) {
mIndexBufferDisplay[cubeAcc] = ByteBuffer
.allocateDirect(cubeFillerIDisplay.length);
mIndexBufferDisplay[cubeAcc].put(cubeFillerIDisplay);
mIndexBufferDisplay[cubeAcc].position(0);

}

for (cubeAcc = ZERO; cubeAcc < NUM_CUBES_DISPLAY; cubeAcc++) {
tbbDisplay[cubeAcc] = ByteBuffer.allocateDirect(SQUARE_VERT * 2 * 4);
tbbDisplay[cubeAcc].order(ByteOrder.nativeOrder());
mTexBufferDisplay[cubeAcc] = tbbDisplay[cubeAcc].asFloatBuffer();

}
}

/**
* @param args
*/
public static void main(String[] args) {
new SampleCode();

}

@Override
public void init(GLAutoDrawable drawable)
{
GL2 gl = drawable.getGL().getGL2(); // Initialize the variable GL

// >>
gl.glClearDepth(1.0f); // Set depth's clear-value to farthest
gl.glEnable(GL2.GL_DEPTH_TEST); // Enables depth-buffer for hidden
// surface removal
gl.glDepthFunc(GL2.GL_LEQUAL); // The type of depth testing to do
gl.glHint(GL2.GL_PERSPECTIVE_CORRECTION_HINT, GL2.GL_NICEST); // nice perspective view, avoid texture distortion.
gl.glShadeModel(GL2.GL_SMOOTH); // Enable smooth shading of color
gl.glDisable(GL2.GL_DITHER); // Disable dithering for better performance

// sky color background
gl.glClearColor(0.17f, 0.65f, 0.92f, 0.0f);

loadTexture(file, gl); // for the billboard

// Align textures to edges
for (count = ZERO; count < NUMTEXTURES; count++) {
tc[count] = tex[count].getImageTexCoords();
}

}

private void loadTexture(String[] fnm, GL2 gl) {

for (count = ZERO; count < NUMTEXTURES; count++) {
fileName[count] = folder + fnm[count];

try {
tex[count] = TextureIO.newTexture(
cl.getResource(fileName[count]), false, null);

tex[count].setTexParameterf(gl, GL2.GL_TEXTURE_MIN_FILTER,
GL2.GL_NEAREST);
tex[count].setTexParameterf(gl, GL2.GL_TEXTURE_MAG_FILTER,
GL2.GL_NEAREST);
tex[count].setTexParameterf(gl, GL2.GL_TEXTURE_WRAP_S,
GL2.GL_REPEAT);
tex[count].setTexParameterf(gl, GL2.GL_TEXTURE_WRAP_T,
GL2.GL_REPEAT);

} catch (Exception e) {
System.out.println("Error loading texture " + fileName[count]);
}

}
}
@Override
public void dispose(GLAutoDrawable drawable)
{
// TODO Auto-generated method stub

}

@Override
public void display(GLAutoDrawable drawable)
{
GL2 gl = drawable.getGL().getGL2(); // Initialize the variable GL

/*
* By default, OpenGL enables features that improve quality but reduce
* performance. One might want to tweak that especially on software
* renderer.
*/
gl.glDisable(GL2.GL_DITHER);

// >>
gl.glTexEnvf(GL2.GL_TEXTURE_ENV, GL2.GL_TEXTURE_ENV_MODE, GL2.GL_MODULATE);

/*
* Usually, the first thing one might want to do is to clear the screen.
* The most efficient way of doing this is to use glClear().
*/

gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT);

/*
* Now we're ready to draw some 3D objects
*/

gl.glMatrixMode(GL2.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glTranslatef(0, 0, -5.2f);

gl.glEnableClientState(GL2.GL_VERTEX_ARRAY);
gl.glEnableClientState(GL2.GL_COLOR_ARRAY);
gl.glEnableClientState(GL2.GL_TEXTURE_COORD_ARRAY);

// Display
mTexBufferDisplay[0].put(tc[0].left()); // x or s
mTexBufferDisplay[0].put(2); // y or t

mTexBufferDisplay[0].put(2); // x or s
mTexBufferDisplay[0].put(2); // y or t

mTexBufferDisplay[0].put(2); // x or s
mTexBufferDisplay[0].put(tc[0].top()); // y or t

mTexBufferDisplay[0].put(tc[0].left()); // x or s
mTexBufferDisplay[0].put(tc[0].top()); // y or t

mTexBufferDisplay[0].position(0);

gl.glActiveTexture(GL2.GL_TEXTURE0);
gl.glEnable(GL2.GL_TEXTURE_2D);
// do not draw the transparent parts of the texture
gl.glEnable(GL2.GL_BLEND);
gl.glBlendFunc(GL2.GL_SRC_ALPHA, GL2.GL_ONE_MINUS_SRC_ALPHA);
// don't show source alpha parts in the destination
// determine which areas of the polygon are to be rendered
gl.glEnable(GL2.GL_ALPHA_TEST);
gl.glAlphaFunc(GL2.GL_GREATER, 0); // only render if alpha > 0

// Display
for (acc = ZERO; acc < NUM_CUBES_DISPLAY; acc++)
{
tex[0].bind(gl);

gl.glPushMatrix();

gl.glFrontFace(GL2.GL_CCW);
gl.glVertexPointer(3, GL2.GL_FLOAT, 0, mVertexBufferDisplay[acc]);
gl.glEnable(GL2.GL_TEXTURE_2D);
gl.glColorPointer(4, GL2.GL_FLOAT, 0, mColorBufferDisplay[acc]);
gl.glTexCoordPointer(2, GL2.GL_FLOAT, 0, mTexBufferDisplay[0]);
gl.glDrawElements(GL2.GL_TRIANGLES, cubeFillerIDisplay.length,
GL2.GL_UNSIGNED_BYTE, mIndexBufferDisplay[acc]);

gl.glPopMatrix();

}

}

public void reshape(GLAutoDrawable drawable, int x, int y, int width,
int height) {
GL2 gl = drawable.getGL().getGL2(); // Initialize the variable GL

if (height == 0) {
height = 1; // to avoid division by 0 in aspect ratio below
}

float ratio = (float) width / height;

gl.glViewport(0, 0, width, height);

/*
* Set our projection matrix. This doesn't have to be done each time we
* draw, but usually a new projection needs to be set when the viewport
* is resized.
*/

gl.glMatrixMode(GL2.GL_PROJECTION);
gl.glLoadIdentity();
gl.glFrustum(-ratio, ratio, -1, 1, 1, 300);

}

}

Thanks in advance.