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/*
* Copyright (c) 2003 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
* MIDROSYSTEMS, 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.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package net.java.games.jogl.impl.macosx;
import java.awt.Component;
import java.util.*;
import net.java.games.gluegen.runtime.*; // for PROCADDRESS_VAR_PREFIX
import net.java.games.jogl.*;
import net.java.games.jogl.impl.*;
public abstract class MacOSXGLContext extends GLContext
{
private static JAWT jawt;
protected long nsContext; // NSOpenGLContext
protected long nsView; // NSView
protected long updater; // ContextUpdater
// Table that holds the addresses of the native C-language entry points for
// OpenGL functions.
private GLProcAddressTable glProcAddressTable;
public MacOSXGLContext(Component component,
GLCapabilities capabilities,
GLCapabilitiesChooser chooser,
GLContext shareWith)
{
super(component, capabilities, chooser, shareWith);
}
protected GL createGL()
{
return new MacOSXGLImpl(this);
}
protected String mapToRealGLFunctionName(String glFunctionName)
{
return glFunctionName;
}
protected String mapToRealGLExtensionName(String glFunctionName)
{
return glFunctionName;
}
protected boolean isFunctionAvailable(String glFunctionName)
{
return super.isFunctionAvailable(glFunctionName);
}
protected abstract boolean isOffscreen();
public abstract int getOffscreenContextBufferedImageType();
public abstract int getOffscreenContextReadBuffer();
public abstract boolean offscreenImageNeedsVerticalFlip();
/**
* Creates and initializes an appropriate OpenGl nsContext. Should only be
* called by {@link makeCurrent(Runnable)}.
*/
protected void create() {
MacOSXGLContext other = (MacOSXGLContext) GLContextShareSet.getShareContext(this);
long share = 0;
if (other != null) {
share = other.getNSContext();
if (share == 0) {
throw new GLException("GLContextShareSet returned an invalid OpenGL context");
}
}
nsContext = CGL.createContext(share, nsView);
if (nsContext == 0) {
throw new GLException("Error creating nsContext");
}
//updater = CGL.updateContextRegister(nsContext, nsView); // gznote: not thread safe yet!
GLContextShareSet.contextCreated(this);
}
protected synchronized boolean makeCurrent(Runnable initAction) throws GLException {
boolean created = false;
if (nsContext == 0) {
create();
if (DEBUG) {
System.err.println("!!! Created GL nsContext for " + getClass().getName());
}
created = true;
}
if (!CGL.makeCurrentContext(nsContext, nsView)) {
throw new GLException("Error making nsContext current");
}
if (created) {
resetGLFunctionAvailability();
if (initAction != null) {
initAction.run();
}
}
return true;
}
protected synchronized void free() throws GLException {
if (!CGL.clearCurrentContext(nsContext, nsView)) {
throw new GLException("Error freeing OpenGL nsContext");
}
}
protected abstract void swapBuffers() throws GLException;
protected long dynamicLookupFunction(String glFuncName) {
return CGL.getProcAddress(glFuncName);
}
public boolean isCreated() {
return (nsContext != 0);
}
protected void resetGLFunctionAvailability()
{
super.resetGLFunctionAvailability();
if (DEBUG) {
System.err.println("!!! Initializing OpenGL extension address table");
}
resetProcAddressTable(getGLProcAddressTable());
}
public GLProcAddressTable getGLProcAddressTable()
{
if (glProcAddressTable == null) {
// FIXME: cache ProcAddressTables by capability bits so we can
// share them among contexts with the same capabilities
glProcAddressTable = new GLProcAddressTable();
}
return glProcAddressTable;
}
public String getPlatformExtensionsString()
{
return "";
}
//----------------------------------------------------------------------
// Internals only below this point
//
protected long getNSContext() {
return nsContext;
}
protected long getNSView() {
return nsView;
}
protected JAWT getJAWT()
{
if (jawt == null)
{
JAWT j = new JAWT();
j.version(JAWTFactory.JAWT_VERSION_1_4);
if (!JAWTFactory.JAWT_GetAWT(j))
{
throw new RuntimeException("Unable to initialize JAWT");
}
jawt = j;
}
return jawt;
}
}
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