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/*
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
* Copyright (c) 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:
*
* - 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
* MICROSYSTEMS, 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 jogamp.opengl.macosx.cgl;
import javax.media.nativewindow.DefaultGraphicsConfiguration;
import javax.media.nativewindow.NativeSurface;
import javax.media.nativewindow.SurfaceChangeable;
import javax.media.opengl.GL;
import javax.media.opengl.GL2;
import javax.media.opengl.GLCapabilitiesImmutable;
import javax.media.opengl.GLContext;
import javax.media.opengl.GLDrawableFactory;
import javax.media.opengl.GLException;
import javax.media.opengl.GLProfile;
import com.jogamp.common.nio.PointerBuffer;
import com.jogamp.opengl.util.GLBuffers;
public class MacOSXPbufferCGLDrawable extends MacOSXCGLDrawable {
// Abstract interface for implementation of this drawable (either
// NSOpenGL-based or CGL-based)
interface GLBackendImpl {
public long create(int renderTarget, int internalFormat, int width, int height);
public void destroy(long pbuffer);
}
// Implementation object (either NSOpenGL-based or CGL-based)
protected GLBackendImpl impl;
// State for render-to-texture and render-to-texture-rectangle support
// private int textureTarget; // e.g. GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE_NV
// private int texture; // actual texture object
// Note that we can not store this in the NativeSurface because the
// semantic is that contains an NSView
protected long pBuffer;
protected int pBufferTexTarget, pBufferTexWidth, pBufferTexHeight;
public MacOSXPbufferCGLDrawable(GLDrawableFactory factory, NativeSurface target) {
super(factory, target, false);
}
protected void destroyImpl() {
setRealized(false);
}
protected void setRealizedImpl() {
if(realized) {
createPbuffer();
} else {
destroyPbuffer();
}
}
public GLContext createContext(GLContext shareWith) {
final MacOSXPbufferCGLContext ctx = new MacOSXPbufferCGLContext(this, shareWith);
registerContext(ctx);
return ctx;
}
@Override
protected long getNSViewHandle() {
// pbuffer handle is NSOpenGLPixelBuffer
return 0;
}
@Override
public long getHandle() {
return pBuffer;
}
protected int getTextureTarget() { return pBufferTexTarget; }
protected int getTextureWidth() { return pBufferTexWidth; }
protected int getTextureHeight() { return pBufferTexHeight; }
protected void destroyPbuffer() {
if (this.pBuffer != 0) {
NativeSurface ns = getNativeSurface();
impl.destroy(pBuffer);
this.pBuffer = 0;
((SurfaceChangeable)ns).setSurfaceHandle(0);
}
}
private void createPbuffer() {
final NativeSurface ns = getNativeSurface();
final DefaultGraphicsConfiguration config = (DefaultGraphicsConfiguration) ns.getGraphicsConfiguration();
final GLCapabilitiesImmutable capabilities = (GLCapabilitiesImmutable)config.getChosenCapabilities();
final GLProfile glProfile = capabilities.getGLProfile();
MacOSXCGLDrawableFactory.SharedResource sr = ((MacOSXCGLDrawableFactory)factory).getOrCreateOSXSharedResource(config.getScreen().getDevice());
if (DEBUG) {
System.out.println("Pbuffer config: " + config);
if(null != sr) {
System.out.println("Pbuffer NPOT Texure avail: "+sr.isNPOTTextureAvailable());
System.out.println("Pbuffer RECT Texture avail: "+sr.isRECTTextureAvailable());
} else {
System.out.println("Pbuffer no sr, no RECT/NPOT Texture avail");
}
}
if ( capabilities.getPbufferRenderToTextureRectangle() && null!=sr && sr.isRECTTextureAvailable() ) {
pBufferTexTarget = GL2.GL_TEXTURE_RECTANGLE;
} else {
pBufferTexTarget = GL.GL_TEXTURE_2D;
}
if ( GL2.GL_TEXTURE_RECTANGLE == pBufferTexTarget || ( null!=sr && sr.isNPOTTextureAvailable() ) ) {
pBufferTexWidth = getWidth();
pBufferTexHeight = getHeight();
} else {
pBufferTexWidth = GLBuffers.getNextPowerOf2(getWidth());
pBufferTexHeight = GLBuffers.getNextPowerOf2(getHeight());
}
int internalFormat = GL.GL_RGBA;
if (capabilities.getPbufferFloatingPointBuffers()) {
if(!glProfile.isGL2GL3() || null==sr || sr.isAppleFloatPixelsAvailable()) {
throw new GLException("Floating-point support (GL_APPLE_float_pixels) not available");
}
switch (capabilities.getRedBits()) {
case 16: internalFormat = GL2.GL_RGBA_FLOAT16_APPLE; break;
case 32: internalFormat = GL2.GL_RGBA_FLOAT32_APPLE; break;
default: throw new GLException("Invalid floating-point bit depth (only 16 and 32 supported)");
}
}
pBuffer = impl.create(pBufferTexTarget, internalFormat, getWidth(), getHeight());
if(DEBUG) {
System.err.println("MacOSXPbufferCGLDrawable tex: target "+toHexString(pBufferTexTarget)+
", pbufferSize "+getWidth()+"x"+getHeight()+
", texSize "+pBufferTexWidth+"x"+pBufferTexHeight+
", internal-fmt "+toHexString(internalFormat));
System.err.println("MacOSXPbufferCGLDrawable pBuffer: "+toHexString(pBuffer));
// Thread.dumpStack();
}
if (pBuffer == 0) {
throw new GLException("pbuffer creation error: CGL.createPBuffer() failed");
}
((SurfaceChangeable)ns).setSurfaceHandle(pBuffer);
}
public void setOpenGLMode(GLBackendType mode) {
super.setOpenGLMode(mode);
createPbuffer(); // recreate
}
protected void initOpenGLImpl(GLBackendType backend) {
switch (backend) {
case NSOPENGL:
impl = new NSOpenGLImpl();
break;
case CGL:
impl = new CGLImpl();
break;
default:
throw new InternalError("Illegal implementation mode " + backend);
}
}
// NSOpenGLPixelBuffer implementation
class NSOpenGLImpl implements GLBackendImpl {
public long create(int renderTarget, int internalFormat, int width, int height) {
return CGL.createPBuffer(renderTarget, internalFormat, width, height);
}
public void destroy(long pbuffer) {
CGL.destroyPBuffer(pbuffer);
}
}
// CGL implementation
class CGLImpl implements GLBackendImpl {
public long create(int renderTarget, int internalFormat, int width, int height) {
PointerBuffer pbuffer = PointerBuffer.allocateDirect(1);
int res = CGL.CGLCreatePBuffer(width, height, renderTarget, internalFormat, 0, pbuffer);
if (res != CGL.kCGLNoError) {
throw new GLException("Error creating CGL-based pbuffer: error code " + res);
}
return pbuffer.get(0);
}
public void destroy(long pbuffer) {
int res = CGL.CGLDestroyPBuffer(pbuffer);
if (res != CGL.kCGLNoError) {
throw new GLException("Error destroying CGL-based pbuffer: error code " + res);
}
}
}
}
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