Further context-related changes for the JSR-231 API. The GLContext

implementations on all platforms have been split into orthogonal
GLDrawable and GLContext concepts. It is now possible to create more
than one GLContet per GLDrawable (though this has not been tested
yet). GLCanvas has been reimplemented in terms of
GLDrawableFactory.getGLDrawable(). More functionality has been moved
from GLDrawable to GLAutoDrawable. Reimplemented lazy sending of
reshape GLEventListener events in GLCanvas and GLJPanel and deleted
notion of deferred reshapes from GLDrawableHelper and elsewhere.
Sharing of textures and display lists is now expressed in terms of
GLContexts instead of GLDrawables. Still need to move pbuffer creation
into GLDrawableFactory from the onscreen GLContext implementations.
Added option to gleem ExaminerViewer to disable automatic redraws upon
mouse events and respecified more of gleem to work on GLAutoDrawables
rather than GLDrawables. Updated all JOGL demos to work with new APIs
and slightly different initialization sequences (in particular, for
pbuffers -- this will change with the addition of
GLDrawableFactory.createGLPbuffer()).


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/branches/JSR-231@324 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 254 insertions, 0 deletions

diff --git a/src/net/java/games/jogl/impl/x11/X11PbufferGLDrawable.java b/src/net/java/games/jogl/impl/x11/X11PbufferGLDrawable.java
new file mode 100644
index 000000000..fc37f331b
--- /dev/null
+++ b/src/net/java/games/jogl/impl/x11/X11PbufferGLDrawable.java
@@ -0,0 +1,254 @@
+/*
+ * 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 net.java.games.jogl.impl.x11;
+
+import net.java.games.jogl.*;
+import net.java.games.jogl.impl.*;
+
+public class X11PbufferGLDrawable extends X11GLDrawable {
+  private int  initWidth;
+  private int  initHeight;
+
+  // drawable in superclass is a GLXPbuffer
+  private GLXFBConfig fbConfig;
+  private int  width;
+  private int  height;
+
+  protected static final int MAX_PFORMATS = 256;
+  protected static final int MAX_ATTRIBS  = 256;
+
+  public X11PbufferGLDrawable(GLCapabilities capabilities, int initialWidth, int initialHeight) {
+    super(null, capabilities, null);
+    this.initWidth  = initialWidth;
+    this.initHeight = initialHeight;
+    if (initWidth <= 0 || initHeight <= 0) {
+      throw new GLException("Initial width and height of pbuffer must be positive (were (" +
+			    initWidth + ", " + initHeight + "))");
+    }
+
+    if (DEBUG) {
+      System.out.println("Pbuffer caps on init: " + capabilities +
+                         (capabilities.getOffscreenRenderToTexture() ? " [rtt]" : "") +
+                         (capabilities.getOffscreenRenderToTextureRectangle() ? " [rect]" : "") +
+                         (capabilities.getOffscreenFloatingPointBuffers() ? " [float]" : ""));
+    }
+  }
+
+  public GLContext createContext(GLContext shareWith) {
+    return new X11PbufferGLContext(this, shareWith);
+  }
+
+  public void destroy() {
+    lockAWT();
+    if (drawable != 0) {
+      GLX.glXDestroyPbuffer(display, drawable);
+    }
+    unlockAWT();
+    display = 0;
+  }
+
+  public void setSize(int width, int height) {
+    // FIXME
+    throw new GLException("Not yet implemented");
+  }
+
+  public int getWidth() {
+    return width;
+  }
+
+  public int getHeight() {
+    return height;
+  }
+
+  public void createPbuffer(GL gl, long display) {
+    if (display == 0) {
+      throw new GLException("Null display");
+    }
+    
+    if (capabilities.getOffscreenRenderToTexture()) {
+      throw new GLException("Render-to-texture pbuffers not supported yet on X11");
+    }
+
+    if (capabilities.getOffscreenRenderToTextureRectangle()) {
+      throw new GLException("Render-to-texture-rectangle pbuffers not supported yet on X11");
+    }
+
+    int[]   iattributes = new int  [2*MAX_ATTRIBS];
+    float[] fattributes = new float[2*MAX_ATTRIBS];
+    int nfattribs = 0;
+    int niattribs = 0;
+
+    // Since we are trying to create a pbuffer, the GLXFBConfig we
+    // request (and subsequently use) must be "p-buffer capable".
+    iattributes[niattribs++] = GL.GLX_DRAWABLE_TYPE;
+    iattributes[niattribs++] = GL.GLX_PBUFFER_BIT;
+
+    iattributes[niattribs++] = GL.GLX_RENDER_TYPE;
+    iattributes[niattribs++] = GL.GLX_RGBA_BIT;
+
+    iattributes[niattribs++] = GLX.GLX_DOUBLEBUFFER;
+    if (capabilities.getDoubleBuffered()) {
+      iattributes[niattribs++] = GL.GL_TRUE;
+    } else {
+      iattributes[niattribs++] = GL.GL_FALSE;
+    }
+
+    iattributes[niattribs++] = GLX.GLX_DEPTH_SIZE;
+    iattributes[niattribs++] = capabilities.getDepthBits();
+
+    iattributes[niattribs++] = GLX.GLX_RED_SIZE;
+    iattributes[niattribs++] = capabilities.getRedBits();
+
+    iattributes[niattribs++] = GLX.GLX_GREEN_SIZE;
+    iattributes[niattribs++] = capabilities.getGreenBits();
+
+    iattributes[niattribs++] = GLX.GLX_BLUE_SIZE;
+    iattributes[niattribs++] = capabilities.getBlueBits();
+
+    iattributes[niattribs++] = GLX.GLX_ALPHA_SIZE;
+    iattributes[niattribs++] = capabilities.getAlphaBits();
+
+    if (capabilities.getStencilBits() > 0) {
+      iattributes[niattribs++] = GLX.GLX_STENCIL_SIZE;
+      iattributes[niattribs++] = capabilities.getStencilBits();
+    }
+
+    if (capabilities.getAccumRedBits()   > 0 ||
+        capabilities.getAccumGreenBits() > 0 ||
+        capabilities.getAccumBlueBits()  > 0) {
+      iattributes[niattribs++] = GLX.GLX_ACCUM_RED_SIZE;
+      iattributes[niattribs++] = capabilities.getAccumRedBits();
+      iattributes[niattribs++] = GLX.GLX_ACCUM_GREEN_SIZE;
+      iattributes[niattribs++] = capabilities.getAccumGreenBits();
+      iattributes[niattribs++] = GLX.GLX_ACCUM_BLUE_SIZE;
+      iattributes[niattribs++] = capabilities.getAccumBlueBits();
+    }
+
+    if (capabilities.getOffscreenFloatingPointBuffers()) {
+      if (!gl.isExtensionAvailable("GLX_NV_float_buffer")) {
+        throw new GLException("Floating-point pbuffers on X11 currently require NVidia hardware");
+      }
+      iattributes[niattribs++] = GLX.GLX_FLOAT_COMPONENTS_NV;
+      iattributes[niattribs++] = GL.GL_TRUE;
+    }
+
+    // FIXME: add FSAA support? Don't want to get into a situation
+    // where we have to retry the glXChooseFBConfig call if it fails
+    // due to a lack of an antialiased visual...
+
+    iattributes[niattribs++] = 0; // null-terminate
+
+    int screen = 0; // FIXME: provide way to specify this?
+    int[] nelementsTmp = new int[1];
+    GLXFBConfig[] fbConfigs = GLX.glXChooseFBConfig(display, screen, iattributes, 0, nelementsTmp, 0);
+    if (fbConfigs == null || fbConfigs.length == 0 || fbConfigs[0] == null) {
+      throw new GLException("pbuffer creation error: glXChooseFBConfig() failed");
+    }
+    // Note that we currently don't allow selection of anything but
+    // the first GLXFBConfig in the returned list
+    GLXFBConfig fbConfig = fbConfigs[0];
+    int nelements = nelementsTmp[0];
+    if (nelements <= 0) {
+      throw new GLException("pbuffer creation error: couldn't find a suitable frame buffer configuration");
+    }
+
+    if (DEBUG) {
+      System.err.println("Found " + fbConfigs.length + " matching GLXFBConfigs");
+      System.err.println("Parameters of default one:");
+      System.err.println("render type: 0x" + Integer.toHexString(queryFBConfig(display, fbConfig, GLX.GLX_RENDER_TYPE)));
+      System.err.println("rgba: " + ((queryFBConfig(display, fbConfig, GLX.GLX_RENDER_TYPE) & GLX.GLX_RGBA_BIT) != 0));
+      System.err.println("r: " + queryFBConfig(display, fbConfig, GLX.GLX_RED_SIZE));
+      System.err.println("g: " + queryFBConfig(display, fbConfig, GLX.GLX_GREEN_SIZE));
+      System.err.println("b: " + queryFBConfig(display, fbConfig, GLX.GLX_BLUE_SIZE));
+      System.err.println("a: " + queryFBConfig(display, fbConfig, GLX.GLX_ALPHA_SIZE));
+      System.err.println("depth: " + queryFBConfig(display, fbConfig, GLX.GLX_DEPTH_SIZE));
+      System.err.println("double buffered: " + queryFBConfig(display, fbConfig, GLX.GLX_DOUBLEBUFFER));
+    }
+
+    // Create the p-buffer.
+    niattribs = 0;
+
+    iattributes[niattribs++] = GL.GLX_PBUFFER_WIDTH;
+    iattributes[niattribs++] = initWidth;
+    iattributes[niattribs++] = GL.GLX_PBUFFER_HEIGHT;
+    iattributes[niattribs++] = initHeight;
+
+    iattributes[niattribs++] = 0;
+
+    long tmpBuffer = GLX.glXCreatePbuffer(display, fbConfig, iattributes, 0);
+    if (tmpBuffer == 0) {
+      // FIXME: query X error code for detail error message
+      throw new GLException("pbuffer creation error: glXCreatePbuffer() failed");
+    }
+
+    // Set up instance variables
+    this.display = display;
+    drawable = tmpBuffer;
+    this.fbConfig = fbConfig;
+
+    // Determine the actual width and height we were able to create.
+    int[] tmp = new int[1];
+    GLX.glXQueryDrawable(display, drawable, GL.GLX_WIDTH, tmp, 0);
+    width = tmp[0];
+    GLX.glXQueryDrawable(display, drawable, GL.GLX_HEIGHT, tmp, 0);
+    height = tmp[0];
+
+    if (DEBUG) {
+      System.err.println("Created pbuffer " + width + " x " + height);
+    }
+  }
+
+  public int getFloatingPointMode() {
+    // Floating-point pbuffers currently require NVidia hardware on X11
+    return GLPbuffer.NV_FLOAT;
+  }
+  
+  public GLXFBConfig getFBConfig() {
+    return fbConfig;
+  }
+
+  private int queryFBConfig(long display, GLXFBConfig fbConfig, int attrib) {
+    int[] tmp = new int[1];
+    if (GLX.glXGetFBConfigAttrib(display, fbConfig, attrib, tmp, 0) != 0) {
+      throw new GLException("glXGetFBConfigAttrib failed");
+    }
+    return tmp[0];
+  }
+}