1 files changed, 265 insertions, 0 deletions
diff --git a/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsPbufferWGLDrawable.java b/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsPbufferWGLDrawable.java
new file mode 100644
index 000000000..a8d37796e
--- /dev/null
+++ b/src/jogl/classes/jogamp/opengl/windows/wgl/WindowsPbufferWGLDrawable.java
@@ -0,0 +1,265 @@
+/*
+ * 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 com.jogamp.opengl.impl.windows.wgl;
+
+import javax.media.nativewindow.NativeSurface;
+import javax.media.nativewindow.SurfaceChangeable;
+import javax.media.opengl.GL;
+import javax.media.opengl.GLContext;
+import javax.media.opengl.GLDrawableFactory;
+import javax.media.opengl.GLException;
+import javax.media.opengl.GLPbuffer;
+import javax.media.opengl.GLProfile;
+
+import com.jogamp.nativewindow.impl.windows.GDI;
+import javax.media.opengl.GLCapabilitiesImmutable;
+
+public class WindowsPbufferWGLDrawable extends WindowsWGLDrawable {
+  private WGLExt cachedWGLExt; // cached WGLExt instance from parent GLCanvas,
+                               // needed to destroy pbuffer
+  private long buffer; // pbuffer handle
+
+  private int floatMode;
+
+  public WindowsPbufferWGLDrawable(GLDrawableFactory factory, NativeSurface target,
+                                   WindowsWGLDrawable dummyDrawable,
+                                   WindowsWGLContext sharedCtx) {
+    super(factory, target, true);
+
+    if (DEBUG) {
+        System.out.println("Pbuffer config: " + getNativeSurface().getGraphicsConfiguration().getNativeGraphicsConfiguration());
+    }
+
+    createPbuffer(dummyDrawable.getNativeSurface().getSurfaceHandle(), sharedCtx);
+
+    if (DEBUG) {
+        System.err.println("Created pbuffer " + this);
+    }
+  }
+
+  protected void setRealizedImpl() {
+    if(realized) {
+        throw new GLException("Recreation via setRealized not supported.");
+    } else {
+        destroyImpl();
+    }
+  }
+
+  public GLContext createContext(GLContext shareWith) {
+    return new WindowsPbufferWGLContext(this, shareWith);
+  }
+
+  protected void destroyImpl() {
+    NativeSurface ns = getNativeSurface();
+    if(0!=buffer) {
+        WGLExt wglExt = cachedWGLExt;
+        if (ns.getSurfaceHandle() != 0) {
+          // Must release DC and pbuffer
+          // NOTE that since the context is not current, glGetError() can
+          // not be called here, so we skip the use of any composable
+          // pipelines (see WindowsOnscreenWGLContext.makeCurrentImpl)
+          if (wglExt.wglReleasePbufferDCARB(buffer, ns.getSurfaceHandle()) == 0) {
+            throw new GLException("Error releasing pbuffer device context: error code " + GDI.GetLastError());
+          }
+          ((SurfaceChangeable)ns).setSurfaceHandle(0);
+        }
+        if (!wglExt.wglDestroyPbufferARB(buffer)) {
+            throw new GLException("Error destroying pbuffer: error code " + GDI.GetLastError());
+        }
+        buffer = 0;
+    }
+  }
+
+  public long getPbufferHandle() {
+    // The actual to-be-used handle for makeCurrent etc,
+    // is the derived DC, set in the NativeSurface surfaceHandle
+    // returned by getHandle().
+    return buffer;
+  }
+
+  public int getFloatingPointMode() {
+    return floatMode;
+  }
+
+  protected void swapBuffersImpl() {
+    if(DEBUG) {
+        System.err.println("unhandled swapBuffersImpl() called for: "+this);
+    }
+  }
+
+  private void createPbuffer(long parentHdc, WindowsWGLContext sharedCtx) {
+    int[]   iattributes = new int  [2*WindowsWGLGraphicsConfiguration.MAX_ATTRIBS];
+    float[] fattributes = new float[1];
+    int[]   floatModeTmp = new int[1];
+    int     niattribs   = 0;
+    int     width, height;
+    WGLExt wglExt = sharedCtx.getWGLExt();
+
+    WindowsWGLGraphicsConfiguration config = (WindowsWGLGraphicsConfiguration) getNativeSurface().getGraphicsConfiguration().getNativeGraphicsConfiguration();
+    GLCapabilitiesImmutable chosenCaps = (GLCapabilitiesImmutable)config.getChosenCapabilities();
+    GLProfile glProfile = chosenCaps.getGLProfile();
+
+    if (DEBUG) {
+      System.out.println("Pbuffer parentHdc = " + toHexString(parentHdc));
+      System.out.println("Pbuffer chosenCaps: " + chosenCaps);
+    }
+
+    if(!WindowsWGLGraphicsConfiguration.GLCapabilities2AttribList(chosenCaps,
+                                    iattributes, sharedCtx, -1, floatModeTmp)){
+      throw new GLException("Pbuffer-related extensions not supported");
+    }
+
+    floatMode = floatModeTmp[0];
+    boolean rtt      = chosenCaps.getPbufferRenderToTexture();
+    boolean rect     = chosenCaps.getPbufferRenderToTextureRectangle();
+    boolean useFloat = chosenCaps.getPbufferFloatingPointBuffers();
+    boolean ati      = false;
+
+    if (useFloat) {
+      ati = (floatMode == GLPbuffer.ATI_FLOAT);
+    }
+
+    int[] pformats = new int[WindowsWGLGraphicsConfiguration.MAX_PFORMATS];
+    int   nformats;
+    int[] nformatsTmp = new int[1];
+    if (!wglExt.wglChoosePixelFormatARB(parentHdc,
+                                        iattributes, 0,
+                                        fattributes, 0,
+                                        WindowsWGLGraphicsConfiguration.MAX_PFORMATS,
+                                        pformats, 0,
+                                        nformatsTmp, 0)) {
+      throw new GLException("pbuffer creation error: wglChoosePixelFormat() failed");
+    }
+    nformats = nformatsTmp[0];
+    if (nformats <= 0) {
+      throw new GLException("pbuffer creation error: Couldn't find a suitable pixel format");
+    }
+
+    if (DEBUG) {
+      System.err.println("" + nformats + " suitable pixel formats found");
+      for (int i = 0; i < nformats; i++) {
+        WGLGLCapabilities dbgCaps = WindowsWGLGraphicsConfiguration.wglARBPFID2GLCapabilities(sharedCtx, parentHdc, pformats[i], glProfile, false, true);
+        System.err.println("pixel format " + pformats[i] + " (index " + i + "): " + dbgCaps);
+      }
+    }
+
+    int pfdid = 0;
+    long tmpBuffer = 0;
+    {
+        int whichFormat;
+        // Loop is a workaround for bugs in NVidia's recent drivers
+        for (whichFormat = 0; whichFormat < nformats; whichFormat++) {
+          int format = pformats[whichFormat];
+
+          // Create the p-buffer.
+          niattribs = 0;
+
+          if (rtt) {
+            iattributes[niattribs++]   = WGLExt.WGL_TEXTURE_FORMAT_ARB;
+            if (useFloat) {
+              iattributes[niattribs++] = WGLExt.WGL_TEXTURE_FLOAT_RGB_NV;
+            } else {
+              iattributes[niattribs++] = WGLExt.WGL_TEXTURE_RGBA_ARB;
+            }
+
+            iattributes[niattribs++] = WGLExt.WGL_TEXTURE_TARGET_ARB;
+            iattributes[niattribs++] = rect ? WGLExt.WGL_TEXTURE_RECTANGLE_NV : WGLExt.WGL_TEXTURE_2D_ARB;
+
+            iattributes[niattribs++] = WGLExt.WGL_MIPMAP_TEXTURE_ARB;
+            iattributes[niattribs++] = GL.GL_FALSE;
+
+            iattributes[niattribs++] = WGLExt.WGL_PBUFFER_LARGEST_ARB;
+            iattributes[niattribs++] = GL.GL_FALSE;
+          }
+
+          iattributes[niattribs++] = 0;
+
+          tmpBuffer = wglExt.wglCreatePbufferARB(parentHdc, format, getWidth(), getHeight(), iattributes, 0);
+          if (tmpBuffer != 0) {
+            // Done
+            break;
+          }
+        }
+
+        if (0 == tmpBuffer) {
+          throw new GLException("pbuffer creation error: wglCreatePbuffer() failed: tried " + nformats +
+                                " pixel formats, last error was: " + wglGetLastError());
+        }
+        pfdid = pformats[whichFormat];
+    }
+
+    // Get the device context.
+    long tmpHdc = wglExt.wglGetPbufferDCARB(tmpBuffer);
+    if (tmpHdc == 0) {
+      throw new GLException("pbuffer creation error: wglGetPbufferDC() failed");
+    }
+
+    NativeSurface ns = getNativeSurface();
+    // Set up instance variables
+    buffer = tmpBuffer;
+    ((SurfaceChangeable)ns).setSurfaceHandle(tmpHdc);
+    cachedWGLExt = wglExt;   
+
+    // Re-query chosen pixel format
+    {
+      WGLGLCapabilities newCaps = WindowsWGLGraphicsConfiguration.wglARBPFID2GLCapabilities(sharedCtx, parentHdc, pfdid, glProfile, false, true);
+      if(null == newCaps) {
+        throw new GLException("pbuffer creation error: unable to re-query chosen PFD ID: " + pfdid + ", hdc " + this.toHexString(tmpHdc));
+      }
+      if(newCaps.isOnscreen() || !newCaps.isPBuffer()) {
+        throw new GLException("Error: Selected Onscreen Caps for PBuffer: "+newCaps);
+      }
+      config.setCapsPFD(newCaps);
+    }
+
+    // Determine the actual width and height we were able to create.
+    int[] tmp = new int[1];
+    wglExt.wglQueryPbufferARB( buffer, WGLExt.WGL_PBUFFER_WIDTH_ARB,  tmp, 0 );
+    width = tmp[0];
+    wglExt.wglQueryPbufferARB( buffer, WGLExt.WGL_PBUFFER_HEIGHT_ARB, tmp, 0 );
+    height = tmp[0];
+    ((SurfaceChangeable)ns).setSize(width, height);
+  }
+
+  private static String wglGetLastError() {
+    return WindowsWGLDrawableFactory.wglGetLastError();
+  }
+}