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Java™ Binding for the OpenGL® API
/**
* Copyright 2010 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 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
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.opengl.util;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import java.nio.ShortBuffer;
import javax.media.opengl.GL;
import javax.media.opengl.GL2ES1;
import javax.media.opengl.GL2ES2;
import javax.media.opengl.GLArrayData;
import javax.media.opengl.GLException;
import javax.media.opengl.GLProfile;
import javax.media.opengl.fixedfunc.GLPointerFuncUtil;
import jogamp.opengl.Debug;
public class GLArrayDataWrapper implements GLArrayData {
public static final boolean DEBUG = Debug.debug("GLArrayData");
/**
* Create a VBO, using a predefined fixed function array index, wrapping the given data.
*
* @param index The GL array index
* @param comps The array component number
* @param dataType The array index GL data type
* @param normalized Whether the data shall be normalized
* @param stride
* @param buffer the user define data
* @param vboName
* @param vboOffset
* @param vboUsage {@link GL2ES2#GL_STREAM_DRAW}, {@link GL#GL_STATIC_DRAW} or {@link GL#GL_DYNAMIC_DRAW}
* @param vboTarget {@link GL#GL_ARRAY_BUFFER} or {@link GL#GL_ELEMENT_ARRAY_BUFFER}
* @return the new create instance
*
* @throws GLException
*/
public static GLArrayDataWrapper createFixed(int index, int comps, int dataType, boolean normalized, int stride,
Buffer buffer, int vboName, long vboOffset, int vboUsage, int vboTarget)
throws GLException
{
GLArrayDataWrapper adc = new GLArrayDataWrapper();
adc.init(null, index, comps, dataType, normalized, stride, buffer, false,
vboName, vboOffset, vboUsage, vboTarget);
return adc;
}
/**
* Create a VBO, using a custom GLSL array attribute name, wrapping the given data.
*
* @param name The custom name for the GL attribute, maybe null if gpuBufferTarget is {@link GL#GL_ELEMENT_ARRAY_BUFFER}
* @param comps The array component number
* @param dataType The array index GL data type
* @param normalized Whether the data shall be normalized
* @param stride
* @param buffer the user define data
* @param vboName
* @param vboOffset
* @param vboUsage {@link GL2ES2#GL_STREAM_DRAW}, {@link GL#GL_STATIC_DRAW} or {@link GL#GL_DYNAMIC_DRAW}
* @param vboTarget {@link GL#GL_ARRAY_BUFFER} or {@link GL#GL_ELEMENT_ARRAY_BUFFER}
* @return the new create instance
* @throws GLException
*/
public static GLArrayDataWrapper createGLSL(String name, int comps, int dataType, boolean normalized, int stride,
Buffer buffer, int vboName, long vboOffset, int vboUsage, int vboTarget)
throws GLException
{
GLArrayDataWrapper adc = new GLArrayDataWrapper();
adc.init(name, -1, comps, dataType, normalized, stride, buffer, true,
vboName, vboOffset, vboUsage, vboTarget);
return adc;
}
/**
* Validates this instance's parameter. Called automatically by {@link GLArrayDataClient} and {@link GLArrayDataServer}.
* {@link GLArrayDataWrapper} does not validate it's instance by itself.
*
* @param glp the GLProfile to use
* @param throwException whether to throw an exception if this instance has invalid parameter or not
* @return true if this instance has invalid parameter, otherwise false
*/
public final boolean validate(GLProfile glp, boolean throwException) {
if(!alive) {
if(throwException) {
throw new GLException("Instance !alive "+this);
}
return false;
}
if(this.isVertexAttribute() && !glp.hasGLSL()) {
if(throwException) {
throw new GLException("GLSL not supported on "+glp+", "+this);
}
return false;
}
return glp.isValidArrayDataType(getIndex(), getComponentCount(), getComponentType(), isVertexAttribute(), throwException);
}
@Override
public void associate(Object obj, boolean enable) {
// nop
}
//
// Data read access
//
@Override
public final boolean isVertexAttribute() { return isVertexAttribute; }
@Override
public final int getIndex() { return index; }
@Override
public final int getLocation() { return location; }
@Override
public final int setLocation(int v) { location = v; return location; }
@Override
public final int setLocation(GL2ES2 gl, int program) {
location = gl.glGetAttribLocation(program, name);
return location;
}
@Override
public final int setLocation(GL2ES2 gl, int program, int location) {
this.location = location;
gl.glBindAttribLocation(program, location, name);
return location;
}
@Override
public final String getName() { return name; }
@Override
public final long getVBOOffset() { return vboEnabled?vboOffset:0; }
@Override
public final int getVBOName() { return vboEnabled?vboName:0; }
@Override
public final boolean isVBO() { return vboEnabled; }
@Override
public final int getVBOUsage() { return vboEnabled?vboUsage:0; }
@Override
public final int getVBOTarget() { return vboEnabled?vboTarget:0; }
@Override
public final Buffer getBuffer() { return buffer; }
@Override
public final int getComponentCount() { return components; }
@Override
public final int getComponentType() { return componentType; }
@Override
public final int getComponentSizeInBytes() { return componentByteSize; }
@Override
public final int getElementCount() {
if(null==buffer) return 0;
return ( buffer.position()==0 ) ? ( buffer.limit() / components ) : ( buffer.position() / components ) ;
}
@Override
public final int getSizeInBytes() {
if(null==buffer) return 0;
return ( buffer.position()==0 ) ? ( buffer.limit() * componentByteSize ) : ( buffer.position() * componentByteSize ) ;
}
@Override
public final boolean getNormalized() { return normalized; }
@Override
public final int getStride() { return strideB; }
public final Class getBufferClass() { return componentClazz; }
@Override
public void destroy(GL gl) {
buffer = null;
vboName=0;
vboEnabled=false;
vboOffset=0;
alive = false;
}
@Override
public String toString() {
return "GLArrayDataWrapper["+name+
", index "+index+
", location "+location+
", isVertexAttribute "+isVertexAttribute+
", dataType 0x"+Integer.toHexString(componentType)+
", bufferClazz "+componentClazz+
", elements "+getElementCount()+
", components "+components+
", stride "+strideB+"b "+strideL+"c"+
", buffer "+buffer+
", vboEnabled "+vboEnabled+
", vboName "+vboName+
", vboUsage 0x"+Integer.toHexString(vboUsage)+
", vboTarget 0x"+Integer.toHexString(vboTarget)+
", vboOffset "+vboOffset+
", alive "+alive+
"]";
}
public static final Class getBufferClass(int dataType) {
switch(dataType) {
case GL.GL_BYTE:
case GL.GL_UNSIGNED_BYTE:
return ByteBuffer.class;
case GL.GL_SHORT:
case GL.GL_UNSIGNED_SHORT:
return ShortBuffer.class;
case GL.GL_UNSIGNED_INT:
case GL2ES1.GL_FIXED:
case GL2ES2.GL_INT:
return IntBuffer.class;
case GL.GL_FLOAT:
return FloatBuffer.class;
default:
throw new GLException("Given OpenGL data type not supported: "+dataType);
}
}
@Override
public void setName(String newName) {
location = -1;
name = newName;
}
/**
* Enable or disable use of VBO.
* Only possible if a VBO buffer name is defined.
* @see #setVBOName(int)
*/
public void setVBOEnabled(boolean vboEnabled) {
this.vboEnabled=vboEnabled;
}
/**
* Set the VBO buffer name, if valid (!= 0) enable use of VBO,
* otherwise (==0) disable VBO usage.
*
* @see #setVBOEnabled(boolean)
*/
public void setVBOName(int vboName) {
this.vboName=vboName;
setVBOEnabled(0!=vboName);
}
/**
* @param vboUsage {@link GL2ES2#GL_STREAM_DRAW}, {@link GL#GL_STATIC_DRAW} or {@link GL#GL_DYNAMIC_DRAW}
*/
public void setVBOUsage(int vboUsage) {
this.vboUsage = vboUsage;
}
/**
* @param vboTarget either {@link GL#GL_ARRAY_BUFFER} or {@link GL#GL_ELEMENT_ARRAY_BUFFER}
*/
public void setVBOTarget(int vboTarget) {
this.vboTarget = vboTarget;
}
protected void init(String name, int index, int components, int componentType,
boolean normalized, int stride, Buffer data,
boolean isVertexAttribute,
int vboName, long vboOffset, int vboUsage, int vboTarget)
throws GLException
{
this.isVertexAttribute = isVertexAttribute;
this.index = index;
this.location = -1;
// We can't have any dependence on the FixedFuncUtil class here for build bootstrapping reasons
if( GL.GL_ELEMENT_ARRAY_BUFFER == vboTarget ) {
// OK ..
} else if( ( 0 == vboUsage && 0 == vboTarget ) || GL.GL_ARRAY_BUFFER == vboTarget ) {
// Set/Check name .. - Required for GLSL case. Validation and debug-name for FFP.
this.name = ( null == name ) ? GLPointerFuncUtil.getPredefinedArrayIndexName(index) : name ;
if(null == this.name ) {
throw new GLException("Not a valid array buffer index: "+index);
}
} else if( 0 < vboTarget ) {
throw new GLException("Invalid GPUBuffer target: 0x"+Integer.toHexString(vboTarget));
}
this.componentType = componentType;
componentClazz = getBufferClass(componentType);
if( GLBuffers.isGLTypeFixedPoint(componentType) ) {
this.normalized = normalized;
} else {
this.normalized = false;
}
componentByteSize = GLBuffers.sizeOfGLType(componentType);
if(0 > componentByteSize) {
throw new GLException("Given componentType not supported: "+componentType+":\n\t"+this);
}
if(0 >= components) {
throw new GLException("Invalid number of components: " + components);
}
this.components = components;
if(0 componentClazz;
protected int componentByteSize;
protected boolean normalized;
protected int strideB; // stride in bytes
protected int strideL; // stride in logical components
protected Buffer buffer;
protected boolean isVertexAttribute;
protected long vboOffset;
protected int vboName;
protected boolean vboEnabled;
protected int vboUsage;
protected int vboTarget;
}