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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.
*/
package jogamp.opengl.macosx.cgl;
import javax.media.nativewindow.DefaultGraphicsConfiguration;
import javax.media.opengl.GL;
import javax.media.opengl.GL2;
import javax.media.opengl.GLCapabilitiesImmutable;
import javax.media.opengl.GLContext;
import javax.media.opengl.GLException;
import javax.media.opengl.GLPbuffer;
public class MacOSXPbufferCGLContext extends MacOSXCGLContext {
// 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
public MacOSXPbufferCGLContext(MacOSXPbufferCGLDrawable drawable,
GLContext shareWith) {
super(drawable, shareWith);
}
public void bindPbufferToTexture() {
GL gl = getGL();
gl.glBindTexture(textureTarget, texture);
// FIXME: not clear whether this is really necessary, but since
// the API docs seem to imply it is and since it doesn't seem to
// impact performance, leaving it in
CGL.setContextTextureImageToPBuffer(contextHandle, drawable.getHandle(), GL.GL_FRONT);
}
public void releasePbufferFromTexture() {
}
protected void makeCurrentImpl(boolean newCreated) throws GLException {
super.makeCurrentImpl(newCreated);
if (newCreated) {
// Initialize render-to-texture support if requested
DefaultGraphicsConfiguration config = (DefaultGraphicsConfiguration) drawable.getNativeSurface().getGraphicsConfiguration().getNativeGraphicsConfiguration();
GLCapabilitiesImmutable capabilities = (GLCapabilitiesImmutable)config.getChosenCapabilities();
GL gl = getGL();
boolean rect = gl.isGL2GL3() && capabilities.getPbufferRenderToTextureRectangle();
if (rect) {
if (!gl.isExtensionAvailable("GL_EXT_texture_rectangle")) {
System.err.println("MacOSXPbufferCGLContext: WARNING: GL_EXT_texture_rectangle extension not " +
"supported; skipping requested render_to_texture_rectangle support for pbuffer");
rect = false;
}
}
textureTarget = (rect ? GL2.GL_TEXTURE_RECTANGLE : GL.GL_TEXTURE_2D);
int[] tmp = new int[1];
gl.glGenTextures(1, tmp, 0);
texture = tmp[0];
gl.glBindTexture(textureTarget, texture);
gl.glTexParameteri(textureTarget, GL.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST);
gl.glTexParameteri(textureTarget, GL.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST);
gl.glTexParameteri(textureTarget, GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP_TO_EDGE);
gl.glTexParameteri(textureTarget, GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP_TO_EDGE);
gl.glCopyTexImage2D(textureTarget, 0, GL.GL_RGB, 0, 0, drawable.getWidth(), drawable.getHeight(), 0);
}
}
public int getFloatingPointMode() {
return GLPbuffer.APPLE_FLOAT;
}
}
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