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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.windows.wgl;
import javax.media.nativewindow.NativeSurface;
import javax.media.nativewindow.MutableSurface;
import javax.media.opengl.GLCapabilitiesImmutable;
import javax.media.opengl.GLContext;
import javax.media.opengl.GLDrawableFactory;
import javax.media.opengl.GLException;
import jogamp.nativewindow.windows.BITMAPINFO;
import jogamp.nativewindow.windows.BITMAPINFOHEADER;
import jogamp.nativewindow.windows.GDI;
import jogamp.opengl.GLGraphicsConfigurationUtil;
import com.jogamp.common.nio.PointerBuffer;
public class WindowsBitmapWGLDrawable extends WindowsWGLDrawable {
private long origbitmap;
private long hbitmap;
protected WindowsBitmapWGLDrawable(GLDrawableFactory factory, NativeSurface target) {
super(factory, target, false);
}
@Override
protected void setRealizedImpl() {
if(realized) {
createBitmap();
} else {
destroyBitmap();
}
}
@Override
public GLContext createContext(GLContext shareWith) {
return new WindowsWGLContext(this, shareWith);
}
@Override
public boolean isGLOriented() {
return false;
}
private void createBitmap() {
int werr;
final NativeSurface ns = getNativeSurface();
if(DEBUG) {
System.err.println(getThreadName()+": WindowsBitmapWGLDrawable (1): "+ns);
}
final WindowsWGLGraphicsConfiguration config = (WindowsWGLGraphicsConfiguration)ns.getGraphicsConfiguration();
final GLCapabilitiesImmutable capsChosen;
{
final GLCapabilitiesImmutable capsChosen0 = (GLCapabilitiesImmutable)config.getChosenCapabilities();
capsChosen = GLGraphicsConfigurationUtil.clipRGBAGLCapabilities(capsChosen0, false /* allowRGB555 */);
if( capsChosen0 != capsChosen ) {
config.setChosenCapabilities(capsChosen);
if(DEBUG) {
System.err.println("WindowsBitmapWGLDrawable: "+capsChosen0+" -> "+capsChosen);
}
}
}
final int width = getWidth();
final int height = getHeight();
//
// 1. Create DIB Section
//
final BITMAPINFO info = BITMAPINFO.create();
final BITMAPINFOHEADER header = info.getBmiHeader();
final int bitsPerPixelIn = capsChosen.getRedBits() +
capsChosen.getGreenBits() +
capsChosen.getBlueBits();
final int bitsPerPixel;
// Note: For BITMAP 32 bpp, the high-byte is _not_ used and hence maximum color is RGB888!
// Note: For BITAMP a biBitCount value other than 24 (RGB888) usually does not work!
bitsPerPixel = 24; // RGB888 only!
header.setBiSize(BITMAPINFOHEADER.size());
header.setBiWidth(width);
// NOTE: Positive height causes the DIB's origin at bottom-left (OpenGL),
// a negative height causes the DIB's origin at top-left (Java AWT, Windows, ..).
// We use !OpenGL origin to remove the need for vertical flip, see 'isGLOriented()' above.
header.setBiHeight(-1 * height);
header.setBiPlanes((short) 1);
header.setBiBitCount((short) bitsPerPixel);
header.setBiXPelsPerMeter(0);
header.setBiYPelsPerMeter(0);
header.setBiClrUsed(0);
header.setBiClrImportant(0);
header.setBiCompression(GDI.BI_RGB);
final int byteNum = width * height * ( bitsPerPixel >> 3 ) ;
header.setBiSizeImage(byteNum);
final PointerBuffer pb = PointerBuffer.allocateDirect(1);
hbitmap = GDI.CreateDIBSection(0, info, GDI.DIB_RGB_COLORS, pb, 0, 0);
werr = GDI.GetLastError();
if(DEBUG) {
long p = ( pb.capacity() > 0 ) ? pb.get(0) : 0;
System.err.println("WindowsBitmapWGLDrawable: pb sz/ptr "+pb.capacity() + ", "+toHexString(p));
System.err.println("WindowsBitmapWGLDrawable: " + width+"x"+height +
", bpp " + bitsPerPixelIn + " -> " + bitsPerPixel +
", bytes " + byteNum +
", header sz " + BITMAPINFOHEADER.size() +
", DIB ptr num " + pb.capacity()+
", "+capsChosen+
", werr "+werr);
}
if (hbitmap == 0) {
throw new GLException("Error creating offscreen bitmap of " + ns + ", werr " + werr);
}
//
// 2. Create memory DC (device context) , and associate it with the DIB.
//
long hdc = GDI.CreateCompatibleDC(0);
werr = GDI.GetLastError();
if (hdc == 0) {
GDI.DeleteObject(hbitmap);
hbitmap = 0;
throw new GLException("Error creating device context for offscreen OpenGL context, werr "+werr);
}
((MutableSurface)ns).setSurfaceHandle(hdc);
if(DEBUG) {
System.err.println(getThreadName()+": WindowsBitmapWGLDrawable (2): "+ns);
}
if ((origbitmap = GDI.SelectObject(hdc, hbitmap)) == 0) {
GDI.DeleteObject(hbitmap);
hbitmap = 0;
GDI.DeleteDC(hdc);
hdc = 0;
throw new GLException("Error selecting bitmap into new device context");
}
config.updateGraphicsConfiguration(getFactory(), ns, null);
}
protected void destroyBitmap() {
NativeSurface ns = getNativeSurface();
if (ns.getSurfaceHandle() != 0) {
// Must destroy bitmap and device context
GDI.SelectObject(ns.getSurfaceHandle(), origbitmap);
GDI.DeleteObject(hbitmap);
GDI.DeleteDC(ns.getSurfaceHandle());
origbitmap = 0;
hbitmap = 0;
((MutableSurface)ns).setSurfaceHandle(0);
}
}
}
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