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package javax.media.opengl;
import javax.media.opengl.*;
import java.nio.*;
import com.sun.opengl.impl.*;
import com.sun.opengl.impl.glsl.*;
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();
GLArrayHandler glArrayHandler = new GLFixedArrayHandler(ads);
ads.init(name, index, comps, dataType, normalized, stride, buffer, 0, buffer.limit(), glBufferUsage, false, glArrayHandler);
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();
GLArrayHandler glArrayHandler = new GLFixedArrayHandler(ads);
ads.init(name, index, comps, dataType, normalized, 0, null, 0, initialSize, glBufferUsage, false, glArrayHandler);
return ads;
}
/**
* Create a VBOBuffer object, using a predefined fixed function array index
* and starting with a given Buffer offset incl it's stride
*
* The object will be created in a sealed state,
* where the data has been written (previously).
*
* This object can be enabled, but since no knowledge of the orginal client data is available,
* we cannot send it down again.
*
* @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, int vboName)
throws GLException
{
GLProfile.isValidateArrayDataType(index, comps, dataType, false, true);
GLArrayDataServer ads = new GLArrayDataServer();
GLArrayHandler glArrayHandler = new GLSLArrayHandler(ads);
ads.init(name, index, comps, dataType, normalized, stride, null, bufferOffset, 0, -1, false, glArrayHandler);
ads.vboName = vboName;
ads.bufferWritten = true;
ads.sealed = true;
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
{
if(!GLProfile.isGL2ES2()) {
throw new GLException("GLArrayDataServer not supported for profile: "+GLProfile.getProfile());
}
GLProfile.isValidateArrayDataType(-1, comps, dataType, true, true);
GLArrayDataServer ads = new GLArrayDataServer();
GLArrayHandler glArrayHandler = new GLSLArrayHandler(ads);
ads.init(name, -1, comps, dataType, normalized, 0, null, 0, initialSize, glBufferUsage, true, glArrayHandler);
return ads;
}
/**
* 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
{
if(!GLProfile.isGL2ES2()) {
throw new GLException("GLArrayDataServer not supported for profile: "+GLProfile.getProfile());
}
GLProfile.isValidateArrayDataType(-1, comps, dataType, true, true);
GLArrayDataServer ads = new GLArrayDataServer();
GLArrayHandler glArrayHandler = new GLSLArrayHandler(ads);
ads.init(name, -1, comps, dataType, normalized, stride, buffer, 0, buffer.limit(), glBufferUsage, true, glArrayHandler);
return ads;
}
//
// Data matters GLArrayData
//
public final long getOffset() { return vboUsage?bufferOffset:-1; }
public final int getVBOName() { return vboUsage?vboName:-1; }
public final 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+
", elements "+getElementNumber()+
", 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,
GLArrayHandler glArrayHandler)
throws GLException
{
super.init(name, index, comps, dataType, normalized, stride, data, initialSize, isVertexAttribute, glArrayHandler);
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 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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