diff options
| author | Kenneth Russel <kbrussel@alum.mit.edu> | 2005-10-24 19:21:03 +0000 |
|---|---|---|
| committer | Kenneth Russel <kbrussel@alum.mit.edu> | 2005-10-24 19:21:03 +0000 |
| commit | d6f9dbc493df725d3d574403549de142c5e1222a (patch) | |
| tree | 8eb152b0627f8d1897a27c5204d6ce2efb4963e4 /src/classes/com/sun/opengl/impl/windows/WindowsOffscreenGLDrawable.java | |
| parent | 42843c3290d64c41c9c8a18b93f5ad3c00d35ddc (diff) | |
Merged JSR-231 branch on to the main JOGL trunk. The main trunk now
contains the evolving JSR-231 Reference Implementation and the JSR-231
branch is permanently closed.
git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@401 232f8b59-042b-4e1e-8c03-345bb8c30851
Diffstat (limited to 'src/classes/com/sun/opengl/impl/windows/WindowsOffscreenGLDrawable.java')
| -rw-r--r-- | src/classes/com/sun/opengl/impl/windows/WindowsOffscreenGLDrawable.java | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/classes/com/sun/opengl/impl/windows/WindowsOffscreenGLDrawable.java b/src/classes/com/sun/opengl/impl/windows/WindowsOffscreenGLDrawable.java new file mode 100644 index 000000000..7dd6d2361 --- /dev/null +++ b/src/classes/com/sun/opengl/impl/windows/WindowsOffscreenGLDrawable.java @@ -0,0 +1,133 @@ +/* + * 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 + * 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 com.sun.opengl.impl.windows; + +import javax.media.opengl.*; +import com.sun.opengl.impl.*; + +public class WindowsOffscreenGLDrawable extends WindowsGLDrawable { + private long origbitmap; + private long hbitmap; + // Width and height of the underlying bitmap + private int width; + private int height; + + public WindowsOffscreenGLDrawable(GLCapabilities capabilities, + GLCapabilitiesChooser chooser) { + super(null, capabilities, chooser); + } + + public GLContext createContext(GLContext shareWith) { + return new WindowsOffscreenGLContext(this, shareWith); + } + + public void setSize(int newWidth, int newHeight) { + width = newWidth; + height = newHeight; + if (hdc != 0) { + destroy(); + } + create(); + } + + public int getWidth() { + return width; + } + + public int getHeight() { + return height; + } + + private void create() { + BITMAPINFO info = new BITMAPINFO(); + BITMAPINFOHEADER header = info.bmiHeader(); + int bitsPerPixel = (capabilities.getRedBits() + + capabilities.getGreenBits() + + capabilities.getBlueBits()); + header.biSize(header.size()); + header.biWidth(width); + // NOTE: negating the height causes the DIB to be in top-down row + // order rather than bottom-up; ends up being correct during pixel + // readback + header.biHeight(-1 * height); + header.biPlanes((short) 1); + header.biBitCount((short) bitsPerPixel); + header.biXPelsPerMeter(0); + header.biYPelsPerMeter(0); + header.biClrUsed(0); + header.biClrImportant(0); + header.biCompression(WGL.BI_RGB); + header.biSizeImage(width * height * bitsPerPixel / 8); + + hdc = WGL.CreateCompatibleDC(0); + if (hdc == 0) { + System.out.println("LastError: " + WGL.GetLastError()); + throw new GLException("Error creating device context for offscreen OpenGL context"); + } + hbitmap = WGL.CreateDIBSection(hdc, info, WGL.DIB_RGB_COLORS, 0, 0, 0); + if (hbitmap == 0) { + WGL.DeleteDC(hdc); + hdc = 0; + throw new GLException("Error creating offscreen bitmap of width " + width + + ", height " + height); + } + if ((origbitmap = WGL.SelectObject(hdc, hbitmap)) == 0) { + WGL.DeleteObject(hbitmap); + hbitmap = 0; + WGL.DeleteDC(hdc); + hdc = 0; + throw new GLException("Error selecting bitmap into new device context"); + } + + choosePixelFormat(false); + } + + public void destroy() { + if (hdc != 0) { + // Must destroy bitmap and device context + WGL.SelectObject(hdc, origbitmap); + WGL.DeleteObject(hbitmap); + WGL.DeleteDC(hdc); + origbitmap = 0; + hbitmap = 0; + hdc = 0; + } + } +} |