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* Copyright 2012 JogAmp Community. All rights reserved.
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* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
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* 2. Redistributions 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.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
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package com.jogamp.opengl.test.junit.jogl.util;
import java.nio.ByteBuffer;
import java.nio.FloatBuffer;
import com.jogamp.opengl.GL;
import com.jogamp.opengl.GL2ES1;
import com.jogamp.opengl.GLAutoDrawable;
import com.jogamp.opengl.GLEventListener;
import com.jogamp.opengl.GLException;
import com.jogamp.opengl.fixedfunc.GLMatrixFunc;
import com.jogamp.opengl.fixedfunc.GLPointerFunc;
import com.jogamp.opengl.glu.GLU;
import com.jogamp.opengl.glu.gl2es1.GLUgl2es1;
import com.jogamp.common.nio.Buffers;
import com.jogamp.opengl.util.GLArrayDataWrapper;
import com.jogamp.opengl.util.GLBuffers;
class DemoGL2ES1Plain implements GLEventListener {
final boolean useArrayData;
final boolean useVBO;
final GLU glu;
final float[] vertices = new float[] { 0, 0, 0,
TestImmModeSinkES1NEWT.iWidth, 0, 0,
TestImmModeSinkES1NEWT.iWidth / 2, TestImmModeSinkES1NEWT.iHeight, 0 };
final float[] colors = new float[] { 1, 0, 0,
0, 1, 0,
0, 0, 1 };
final ByteBuffer bufferAll;
final int bufferVOffset, bufferCOffset;
final int bufferVSize, bufferCSize;
final FloatBuffer bufferC, bufferV;
final int[] vboName = new int[] { 0 };
final GLArrayDataWrapper arrayC, arrayV;
DemoGL2ES1Plain(final boolean useArrayData, final boolean useVBO) {
this.useArrayData = useArrayData;
this.useVBO = useVBO;
this.glu = new GLUgl2es1();
bufferAll = Buffers.newDirectByteBuffer( ( colors.length + vertices.length ) * Buffers.SIZEOF_FLOAT );
bufferVOffset = 0;
bufferVSize = 3*3*GLBuffers.sizeOfGLType(GL.GL_FLOAT);
bufferCOffset = bufferVSize;
bufferCSize = 3*3*GLBuffers.sizeOfGLType(GL.GL_FLOAT);
bufferV = (FloatBuffer) GLBuffers.sliceGLBuffer(bufferAll, bufferVOffset, bufferVSize, GL.GL_FLOAT);
bufferV.put(vertices, 0, vertices.length).rewind();
bufferC = (FloatBuffer) GLBuffers.sliceGLBuffer(bufferAll, bufferCOffset, bufferCSize, GL.GL_FLOAT);
bufferC.put(colors, 0, colors.length).rewind();
System.err.println("bufferAll: "+bufferAll+", byteOffset "+Buffers.getDirectBufferByteOffset(bufferAll));
System.err.println("bufferV: off "+bufferVOffset+", size "+bufferVSize+": "+bufferV+", byteOffset "+Buffers.getDirectBufferByteOffset(bufferV));
System.err.println("bufferC: off "+bufferCOffset+", size "+bufferCSize+": "+bufferC+", byteOffset "+Buffers.getDirectBufferByteOffset(bufferC));
if(useArrayData) {
arrayV = GLArrayDataWrapper.createFixed(GLPointerFunc.GL_VERTEX_ARRAY, 3, GL.GL_FLOAT, false, 0,
bufferV, 0, bufferVOffset, GL.GL_STATIC_DRAW, GL.GL_ARRAY_BUFFER);
arrayC = GLArrayDataWrapper.createFixed(GLPointerFunc.GL_COLOR_ARRAY, 3, GL.GL_FLOAT, false, 0,
bufferC, 0, bufferCOffset, GL.GL_STATIC_DRAW, GL.GL_ARRAY_BUFFER);
} else {
arrayV = null;
arrayC = null;
}
}
@Override
public void init(final GLAutoDrawable drawable) {
final GL gl = drawable.getGL();
System.err.println("GL_VENDOR "+gl.glGetString(GL.GL_VENDOR));
System.err.println("GL_RENDERER "+gl.glGetString(GL.GL_RENDERER));
System.err.println("GL_VERSION "+gl.glGetString(GL.GL_VERSION));
if(useVBO) {
gl.glGenBuffers(1, vboName, 0);
if(0 == vboName[0]) {
throw new GLException("glGenBuffers didn't return valid VBO name");
}
}
}
@Override
public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) {
final GL2ES1 gl = drawable.getGL().getGL2ES1();
gl.glMatrixMode( GLMatrixFunc.GL_PROJECTION );
gl.glLoadIdentity();
// coordinate system origin at lower left with width and height same as the window
glu.gluOrtho2D( 0.0f, width, 0.0f, height );
gl.glMatrixMode( GLMatrixFunc.GL_MODELVIEW );
gl.glLoadIdentity();
gl.glViewport( 0, 0, width, height );
}
@Override
public void display(final GLAutoDrawable drawable) {
final GL2ES1 gl = drawable.getGL().getGL2ES1();
gl.glClear( GL.GL_COLOR_BUFFER_BIT );
// draw a triangle filling the window
gl.glLoadIdentity();
if(useVBO) {
gl.glBindBuffer(GL.GL_ARRAY_BUFFER, vboName[0]);
gl.glBufferData(GL.GL_ARRAY_BUFFER, bufferAll.limit(), bufferAll, GL.GL_STATIC_DRAW);
if(useArrayData) {
arrayV.setVBOName(vboName[0]);
arrayC.setVBOName(vboName[0]);
}
}
gl.glEnableClientState(GLPointerFunc.GL_VERTEX_ARRAY);
if(useArrayData) {
gl.glVertexPointer(arrayV);
} else {
if(useVBO) {
gl.glVertexPointer(3, GL.GL_FLOAT, 0, bufferVOffset);
} else {
gl.glVertexPointer(3, GL.GL_FLOAT, 0, bufferV);
}
}
gl.glEnableClientState(GLPointerFunc.GL_COLOR_ARRAY);
if(useArrayData) {
gl.glColorPointer(arrayC);
} else {
if(useVBO) {
gl.glColorPointer(3, GL.GL_FLOAT, 0, bufferCOffset);
} else {
gl.glColorPointer(3, GL.GL_FLOAT, 0, bufferC);
}
}
if(useVBO) {
gl.glBindBuffer(GL.GL_ARRAY_BUFFER, 0);
}
gl.glDrawArrays(GL.GL_TRIANGLES, 0, 3);
gl.glFlush();
gl.glDisableClientState(GLPointerFunc.GL_COLOR_ARRAY);
gl.glDisableClientState(GLPointerFunc.GL_VERTEX_ARRAY);
}
@Override
public void dispose(final GLAutoDrawable drawable) {
final GL gl = drawable.getGL();
if(0 != vboName[0]) {
gl.glDeleteBuffers(1, vboName, 0);
vboName[0] = 0;
}
}
}