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package javax.media.opengl;
import javax.media.opengl.*;
import java.nio.*;
import com.sun.opengl.impl.*;
public class GLArrayDataServer extends GLArrayDataClient implements GLArrayData {
//
// lifetime matters
//
/**
* Create a VBOBuffer object, using a predefined fixed function array index
* and starting with a given Buffer object incl it's stride
*
* On profiles GL2 and ES1 the fixed function pipeline behavior is as expected.
* On profile ES2 the fixed function emulation will transform these calls to
* EnableVertexAttribArray and VertexAttribPointer calls,
* and a predefined vertex attribute variable name will be choosen.
*
* @arg index The GL array index
* @arg name The optional custom name for the GL array index, maybe null.
* If null, the default name mapping will be used, see 'getPredefinedArrayIndexName(int)'.
* This name might be used as the shader attribute name.
* @arg comps The array component number
* @arg dataType The array index GL data type
* @arg normalized Wheather the data shall be normalized
*
* @see javax.media.opengl.GLContext#getPredefinedArrayIndexName(int)
*/
public static GLArrayDataServer createFixed(int index, String name, int comps, int dataType, boolean normalized,
int stride, Buffer buffer, int glBufferUsage)
throws GLException
{
GLProfile.isValidateArrayDataType(index, comps, dataType, false, true);
GLArrayDataServer ads = new GLArrayDataServer();
ads.init(name, index, comps, dataType, normalized, stride, buffer, 0, buffer.limit(), glBufferUsage, false);
return ads;
}
/**
* Create a VBOBuffer object, using a predefined fixed function array index
* and starting with a new created Buffer object with initialSize size
*
* On profiles GL2 and ES1 the fixed function pipeline behavior is as expected.
* On profile ES2 the fixed function emulation will transform these calls to
* EnableVertexAttribArray and VertexAttribPointer calls,
* and a predefined vertex attribute variable name will be choosen.
*
* @see javax.media.opengl.GLContext#getPredefinedArrayIndexName(int)
*/
public static GLArrayDataServer createFixed(int index, String name, int comps, int dataType, boolean normalized,
int initialSize, int glBufferUsage)
throws GLException
{
GLProfile.isValidateArrayDataType(index, comps, dataType, false, true);
GLArrayDataServer ads = new GLArrayDataServer();
ads.init(name, index, comps, dataType, normalized, 0, null, 0, initialSize, glBufferUsage, false);
return ads;
}
/**
* Create a VBOBuffer object, using a predefined fixed function array index
* and starting with a given Buffer offset incl it's stride
*
* This object can neither be enabled, nor rendered, since no knowledge of the buffer
* itself is available. This object is only a VBO variant of GLArrayData
* and cannot being drawn.
*
* @see javax.media.opengl.GLContext#getPredefinedArrayIndexName(int)
*/
public static GLArrayDataServer createFixed(int index, String name, int comps, int dataType, boolean normalized,
int stride, long bufferOffset)
throws GLException
{
GLProfile.isValidateArrayDataType(index, comps, dataType, false, true);
GLArrayDataServer ads = new GLArrayDataServer();
ads.init(name, index, comps, dataType, normalized, stride, null, bufferOffset, 0, -1, false);
return ads;
}
/**
* Create a VBOBuffer object, using a custom GLSL array attribute name
* and starting with a new created Buffer object with initialSize size
*
* @see javax.media.opengl.GLContext#getPredefinedArrayIndexName(int)
*/
public static GLArrayDataServer createGLSL(String name, int comps, int dataType, boolean normalized,
int initialSize, int glBufferUsage)
throws GLException
{
GLProfile.isValidateArrayDataType(-1, comps, dataType, true, true);
Class[] types = new Class[]{ String.class, int.class, int.class, boolean.class, int.class, int.class };
Object[] args = new Object[]{ name, new Integer(comps), new Integer(dataType),
new Boolean(normalized), new Integer(initialSize), new Integer(glBufferUsage) } ;
if(GLProfile.isGL2ES2()) {
return (GLArrayDataServer) GLReflection.createInstance("com.sun.opengl.impl.glsl.GLSLArrayDataServer", types, args);
}
throw new GLException("GLArrayDataServer not supported for profile: "+GLProfile.getProfile());
}
/**
* Create a VBOBuffer object, using a custom GLSL array attribute name
* and starting with a given Buffer object incl it's stride
*
* @see javax.media.opengl.GLContext#getPredefinedArrayIndexName(int)
*/
public static GLArrayDataServer createGLSL(String name, int comps, int dataType, boolean normalized,
int stride, Buffer buffer, int glBufferUsage)
throws GLException
{
GLProfile.isValidateArrayDataType(-1, comps, dataType, true, true);
Class[] types = new Class[]{ String.class, int.class, int.class, boolean.class, int.class, Buffer.class, int.class };
Object[] args = new Object[]{ name, new Integer(comps), new Integer(dataType),
new Boolean(normalized), new Integer(stride), buffer, new Integer(glBufferUsage) } ;
if(GLProfile.isGL2ES2()) {
return (GLArrayDataServer) GLReflection.createInstance("com.sun.opengl.impl.glsl.GLSLArrayDataServer", types, args);
}
throw new GLException("GLArrayDataServer not supported for profile: "+GLProfile.getProfile());
}
//
// Data matters GLArrayData
//
public long getOffset() { return vboUsage?bufferOffset:-1; }
public boolean isVBO() { return vboUsage; }
//
// Data and GL state modification ..
//
public void destroy(GL gl) {
super.destroy(gl);
if(vboName!=0) {
int[] tmp = new int[1];
tmp[0] = vboName;
gl.glDeleteBuffers(1, tmp, 0);
vboName = 0;
}
}
//
// data matters
//
/**
* Convenient way do disable the VBO behavior and
* switch to client side data one
* Only possible if buffer is defined.
*/
public void setVBOUsage(boolean vboUsage) {
checkSeal(false);
this.vboUsage=(null!=buffer)?vboUsage:true;
}
public int getBufferUsage() {
return glBufferUsage;
}
public String toString() {
return "GLArrayDataServer["+name+
", index "+index+
", location "+location+
", isVertexAttribute "+isVertexAttribute+
", dataType "+dataType+
", bufferClazz "+clazz+
", vertices "+getVerticeNumber()+
", components "+components+
", stride "+stride+"u "+strideB+"b "+strideL+"c"+
", initialSize "+initialSize+
", glBufferUsage "+glBufferUsage+
", vboUsage "+vboUsage+
", vboName "+vboName+
", sealed "+sealed+
", bufferEnabled "+bufferEnabled+
", bufferWritten "+bufferWritten+
", buffer "+buffer+
", offset "+bufferOffset+
"]";
}
//
// non public matters ..
//
protected void init(String name, int index, int comps, int dataType, boolean normalized,
int stride, Buffer data, long offset, int initialSize, int glBufferUsage, boolean isVertexAttribute)
throws GLException
{
super.init(name, index, comps, dataType, normalized, stride, data, initialSize, isVertexAttribute);
vboUsage=true;
if( ! (GLProfile.isGL2ES2() && glBufferUsage==GL2ES2.GL_STREAM_DRAW) ) {
switch(glBufferUsage) {
case -1: // nop
case GL2ES1.GL_STATIC_DRAW:
case GL2ES1.GL_DYNAMIC_DRAW:
break;
default:
throw new GLException("invalid glBufferUsage: "+glBufferUsage+":\n\t"+this);
}
}
this.bufferOffset=offset;
this.glBufferUsage = glBufferUsage;
this.vboName = 0;
}
protected void enableBufferGLImpl(GL gl, boolean enable) {
if(enable) {
gl.glEnableClientState(index);
bufferEnabled = true;
if(vboUsage) {
gl.glBindBuffer(GL.GL_ARRAY_BUFFER, vboName);
if(!bufferWritten) {
gl.glBufferData(GL.GL_ARRAY_BUFFER, buffer.limit() * getBufferCompSize(), buffer, glBufferUsage);
}
}
switch(index) {
case GL.GL_VERTEX_ARRAY:
gl.glVertexPointer(this);
break;
case GL.GL_NORMAL_ARRAY:
gl.glNormalPointer(this);
break;
case GL.GL_COLOR_ARRAY:
gl.glColorPointer(this);
break;
case GL.GL_TEXTURE_COORD_ARRAY:
gl.glTexCoordPointer(this);
break;
default:
throw new GLException("invalid glArrayIndex: "+index+":\n\t"+this);
}
bufferWritten=true;
} else {
gl.glDisableClientState(index);
bufferEnabled = false;
}
}
protected void init_vbo(GL gl) {
if(vboUsage && vboName==0) {
int[] tmp = new int[1];
gl.glGenBuffers(1, tmp, 0);
vboName = tmp[0];
}
}
protected long bufferOffset;
protected int glBufferUsage;
protected int vboName;
protected boolean vboUsage;
}
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