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/*
* Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
*/
package demos.readbuffer;
import java.nio.*;
import javax.media.opengl.*;
import javax.media.opengl.fixedfunc.*;
import com.jogamp.opengl.util.*;
import javax.media.opengl.fixedfunc.GLPointerFunc;
import com.jogamp.opengl.util.texture.TextureCoords;
import com.jogamp.opengl.util.GLArrayDataClient;
import com.jogamp.opengl.util.GLArrayDataServer;
public class ReadBuffer2Screen extends ReadBufferBase {
PMVMatrix pmvMatrix;
GLArrayDataClient readTextureVertices = null;
GLArrayDataClient readTextureCoords = null;
boolean enableBufferAlways = false; // FIXME
boolean enableBufferVBO = true; // FIXME
public ReadBuffer2Screen (GLDrawable externalRead) {
super(externalRead);
}
public void init(GLAutoDrawable drawable) {
super.init(drawable);
GL gl = drawable.getGL();
pmvMatrix = new PMVMatrix();
float f_edge = 1f;
if(null==readTextureVertices) {
//readTextureVertices = GLArrayDataClient.createFixed(gl, GLPointerFunc.GL_VERTEX_ARRAY,
// 2, GL.GL_FLOAT, true, 4);
readTextureVertices = GLArrayDataServer.createFixed(GLPointerFunc.GL_VERTEX_ARRAY,
2, GL.GL_FLOAT, true, 4, GL.GL_STATIC_DRAW);
readTextureVertices.setEnableAlways(enableBufferAlways);
readTextureVertices.setVBOEnabled(enableBufferVBO);
{
FloatBuffer vb = (FloatBuffer)readTextureVertices.getBuffer();
vb.put(-f_edge); vb.put(-f_edge);
vb.put( f_edge); vb.put(-f_edge);
vb.put(-f_edge); vb.put( f_edge);
vb.put( f_edge); vb.put( f_edge);
}
readTextureVertices.seal(gl, true);
System.out.println(readTextureVertices);
}
// Clear background to gray
gl.glClearColor(0.5f, 0.5f, 0.5f, 0.4f);
}
public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
super.reshape(drawable, x, y, width, height);
GL gl = drawable.getGL();
gl.glViewport(0, 0, width, height);
if(gl instanceof GLLightingFunc) {
((GLLightingFunc)gl).glShadeModel(GLLightingFunc.GL_SMOOTH);
}
GLMatrixFunc glM;
if(gl instanceof GLMatrixFunc) {
glM = (GLMatrixFunc)gl;
} else {
throw new GLException("ES2 currently unhandled .. ");
}
// Identity ..
pmvMatrix.glMatrixMode(pmvMatrix.GL_MODELVIEW);
pmvMatrix.glLoadIdentity();
pmvMatrix.glTranslatef(0, 0, -2.5f);
if(null!=glM) {
glM.glMatrixMode(pmvMatrix.GL_MODELVIEW);
glM.glLoadMatrixf(pmvMatrix.glGetMvMatrixf());
}
// Set location in front of camera
pmvMatrix.glMatrixMode(pmvMatrix.GL_PROJECTION);
pmvMatrix.glLoadIdentity();
pmvMatrix.gluPerspective(45.0f, (float)width / (float)height, 1.0f, 100.0f);
if(null!=glM) {
glM.glMatrixMode(pmvMatrix.GL_PROJECTION);
glM.glLoadMatrixf(pmvMatrix.glGetPMatrixf());
}
}
public void dispose(GLAutoDrawable drawable) {
super.dispose(drawable);
}
void renderOffscreenTexture(GL gl) {
if(!readBufferUtil.isValid()) return;
// Now draw one quad with the texture
readBufferUtil.getTexture().enable(gl);
readBufferUtil.getTexture().bind(gl);
if(gl.isGL2ES1()) {
// gl.getGL2ES1().glTexEnvi(GL2ES1.GL_TEXTURE_ENV, GL2ES1.GL_TEXTURE_ENV_MODE, GL2ES1.GL_REPLACE);
gl.getGL2ES1().glTexEnvi(GL2ES1.GL_TEXTURE_ENV, GL2ES1.GL_TEXTURE_ENV_MODE, GL2ES1.GL_MODULATE);
}
updateTextureCoords(gl, false);
readTextureVertices.enableBuffer(gl, true);
if(null!=readTextureCoords) {
readTextureCoords.enableBuffer(gl, true);
}
gl.glDrawArrays(GL.GL_TRIANGLE_STRIP, 0, readTextureVertices.getElementCount());
/**
if(null!=readTextureCoords) {
readTextureCoords.enableBuffer(gl, false);
}
readTextureVertices.enableBuffer(gl, false); */
readBufferUtil.getTexture().disable(gl);
}
void updateTextureCoords(GL gl, boolean force) {
if(force || null==readTextureCoords) {
readTextureCoords = GLArrayDataServer.createFixed(GLPointerFunc.GL_TEXTURE_COORD_ARRAY,
2, GL.GL_FLOAT, true, 4, GL.GL_STATIC_DRAW);
readTextureCoords.setEnableAlways(enableBufferAlways);
readTextureCoords.setVBOEnabled(enableBufferVBO);
{
TextureCoords coords = readBufferUtil.getTexture().getImageTexCoords();
FloatBuffer cb = (FloatBuffer)readTextureCoords.getBuffer();
cb.put(coords.left()); cb.put(coords.bottom());
cb.put(coords.right()); cb.put(coords.bottom());
cb.put(coords.left()); cb.put(coords.top());
cb.put(coords.right()); cb.put(coords.top());
}
readTextureCoords.seal(gl, true);
System.out.println(readTextureCoords);
}
}
public void display(GLAutoDrawable drawable) {
super.display(drawable);
GL gl = drawable.getGL();
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT);
if(gl instanceof GLLightingFunc) {
((GLLightingFunc)gl).glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
}
renderOffscreenTexture(gl);
}
}
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