1 files changed, 393 insertions, 0 deletions
diff --git a/src/net/java/games/jogl/impl/windows/WindowsPbufferGLDrawable.java b/src/net/java/games/jogl/impl/windows/WindowsPbufferGLDrawable.java
new file mode 100644
index 000000000..6917b281d
--- /dev/null
+++ b/src/net/java/games/jogl/impl/windows/WindowsPbufferGLDrawable.java
@@ -0,0 +1,393 @@
+/*
+ * 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.windows;
+
+import net.java.games.jogl.*;
+import net.java.games.jogl.impl.*;
+
+public class WindowsPbufferGLDrawable extends WindowsGLDrawable {
+  private int  initWidth;
+  private int  initHeight;
+
+  private GL   cachedGL; // cached GL instance from parent GLCanvas,
+                         // needed to destroy pbuffer
+  private long buffer; // pbuffer handle
+  private int  width;
+  private int  height;
+
+  private int floatMode;
+
+  public WindowsPbufferGLDrawable(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 WindowsPbufferGLContext(this, shareWith);
+  }
+
+  public void destroy() {
+    if (hdc != 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 WindowsOnscreenGLContext.makeCurrentImpl)
+      GL gl = cachedGL;
+      if (gl.wglReleasePbufferDCARB(buffer, hdc) == 0) {
+        throw new GLException("Error releasing pbuffer device context: error code " + WGL.GetLastError());
+      }
+      hdc = 0;
+      if (!gl.wglDestroyPbufferARB(buffer)) {
+        throw new GLException("Error destroying pbuffer: error code " + WGL.GetLastError());
+      }
+      buffer = 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 parentHdc) {
+    int[]   iattributes = new int  [2*MAX_ATTRIBS];
+    float[] fattributes = new float[2*MAX_ATTRIBS];
+    int nfattribs = 0;
+    int niattribs = 0;
+
+    if (DEBUG) {
+      System.out.println("Pbuffer parentHdc = " + toHexString(parentHdc));
+      System.out.println("Pbuffer caps: " + capabilities +
+                         (capabilities.getOffscreenRenderToTexture() ? " [rtt]" : "") +
+                         (capabilities.getOffscreenRenderToTextureRectangle() ? " [rect]" : "") +
+                         (capabilities.getOffscreenFloatingPointBuffers() ? " [float]" : ""));
+    }
+
+    boolean rtt      = capabilities.getOffscreenRenderToTexture();
+    boolean rect     = capabilities.getOffscreenRenderToTextureRectangle();
+    boolean useFloat = capabilities.getOffscreenFloatingPointBuffers();
+    boolean ati      = false;
+    
+    // Since we are trying to create a pbuffer, the pixel format we
+    // request (and subsequently use) must be "p-buffer capable".
+    iattributes[niattribs++] = GL.WGL_DRAW_TO_PBUFFER_ARB;
+    iattributes[niattribs++] = GL.GL_TRUE;
+
+    if (rtt && !rect) {
+      throw new GLException("Render-to-texture-rectangle requires render-to-texture to be specified");
+    }
+
+    if (rect) {
+      if (!gl.isExtensionAvailable("GL_NV_texture_rectangle")) {
+        throw new GLException("Render-to-texture-rectangle requires GL_NV_texture_rectangle extension");
+      }
+    }
+
+    if (useFloat) {
+      if (!gl.isExtensionAvailable("WGL_ATI_pixel_format_float") &&
+          !gl.isExtensionAvailable("WGL_NV_float_buffer")) {
+        throw new GLException("Floating-point pbuffers not supported by this hardware");
+      }
+
+      // Prefer NVidia extension over ATI
+      if (gl.isExtensionAvailable("WGL_NV_float_buffer")) {
+        ati = false;
+        floatMode = GLPbuffer.NV_FLOAT;
+      } else {
+        ati = true;
+        floatMode = GLPbuffer.ATI_FLOAT;
+      }
+      if (DEBUG) {
+        System.err.println("Using " + (ati ? "ATI" : "NVidia") + " floating-point extension");
+      }
+    }
+
+    if (useFloat && ati) {
+      if (rtt) {
+        throw new GLException("Render-to-floating-point-texture not supported on ATI hardware");
+      } else {
+        iattributes[niattribs++] = GL.WGL_PIXEL_TYPE_ARB;
+        iattributes[niattribs++] = GL.WGL_TYPE_RGBA_FLOAT_ATI;
+      }
+    } else {
+      if (!rtt) {
+        // Currently we don't support non-truecolor visuals in the
+        // GLCapabilities, so we don't offer the option of making
+        // color-index pbuffers.
+        iattributes[niattribs++] = GL.WGL_PIXEL_TYPE_ARB;
+        iattributes[niattribs++] = GL.WGL_TYPE_RGBA_ARB;
+      }
+    }
+
+    iattributes[niattribs++] = GL.WGL_DOUBLE_BUFFER_ARB;
+    if (capabilities.getDoubleBuffered()) {
+      iattributes[niattribs++] = GL.GL_TRUE;
+    } else {
+      iattributes[niattribs++] = GL.GL_FALSE;
+    }
+
+    iattributes[niattribs++] = GL.WGL_DEPTH_BITS_ARB;
+    iattributes[niattribs++] = capabilities.getDepthBits();
+
+    iattributes[niattribs++] = GL.WGL_RED_BITS_ARB;
+    iattributes[niattribs++] = capabilities.getRedBits();
+
+    iattributes[niattribs++] = GL.WGL_GREEN_BITS_ARB;
+    iattributes[niattribs++] = capabilities.getGreenBits();
+
+    iattributes[niattribs++] = GL.WGL_BLUE_BITS_ARB;
+    iattributes[niattribs++] = capabilities.getBlueBits();
+
+    iattributes[niattribs++] = GL.WGL_ALPHA_BITS_ARB;
+    iattributes[niattribs++] = capabilities.getAlphaBits();
+
+    iattributes[niattribs++] = GL.WGL_STENCIL_BITS_ARB;
+    if (capabilities.getStencilBits() > 0) {
+      iattributes[niattribs++] = GL.GL_TRUE;
+    } else {
+      iattributes[niattribs++] = GL.GL_FALSE;
+    }
+
+    if (capabilities.getAccumRedBits()   > 0 ||
+        capabilities.getAccumGreenBits() > 0 ||
+        capabilities.getAccumBlueBits()  > 0) {
+      iattributes[niattribs++] = GL.WGL_ACCUM_BITS_ARB;
+      iattributes[niattribs++] = GL.GL_TRUE;
+    }
+
+    if (useFloat && !ati) {
+      iattributes[niattribs++] = GL.WGL_FLOAT_COMPONENTS_NV;
+      iattributes[niattribs++] = GL.GL_TRUE;
+    }
+
+    if (rtt) {
+      if (useFloat) {
+        assert(!ati);
+        if (!rect) {
+          throw new GLException("Render-to-floating-point-texture only supported on NVidia hardware with render-to-texture-rectangle");
+        }
+        iattributes[niattribs++] = GL.WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGB_NV;
+        iattributes[niattribs++] = GL.GL_TRUE;
+      } else {
+        iattributes[niattribs++] = rect ? GL.WGL_BIND_TO_TEXTURE_RECTANGLE_RGB_NV : GL.WGL_BIND_TO_TEXTURE_RGB_ARB;
+        iattributes[niattribs++] = GL.GL_TRUE;
+      }
+    }
+
+    iattributes[niattribs++] = GL.WGL_SUPPORT_OPENGL_ARB;
+    iattributes[niattribs++] = GL.GL_TRUE;
+    
+    int[] pformats = new int[MAX_PFORMATS];
+    int   nformats;
+    int[] nformatsTmp = new int[1];
+    if (!gl.wglChoosePixelFormatARB(parentHdc,
+                                    iattributes, 0,
+                                    fattributes, 0,
+                                    MAX_PFORMATS,
+                                    pformats, 0,
+                                    nformatsTmp, 0)) {
+      throw new GLException("pbuffer creation error: wglChoosePixelFormatARB() 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");
+      // query pixel format
+      iattributes[0] = GL.WGL_RED_BITS_ARB;
+      iattributes[1] = GL.WGL_GREEN_BITS_ARB;
+      iattributes[2] = GL.WGL_BLUE_BITS_ARB;
+      iattributes[3] = GL.WGL_ALPHA_BITS_ARB;
+      iattributes[4] = GL.WGL_DEPTH_BITS_ARB;
+      iattributes[5] = (useFloat ? (ati ? GL.WGL_PIXEL_TYPE_ARB : GL.WGL_FLOAT_COMPONENTS_NV) : GL.WGL_RED_BITS_ARB);
+      iattributes[6] = GL.WGL_SAMPLE_BUFFERS_EXT;
+      iattributes[7] = GL.WGL_SAMPLES_EXT;
+      iattributes[8] = GL.WGL_DRAW_TO_PBUFFER_ARB;
+      int[] ivalues = new int[9];
+      for (int i = 0; i < nformats; i++) {
+        if (!gl.wglGetPixelFormatAttribivARB(parentHdc, pformats[i], 0, 9, iattributes, 0, ivalues, 0)) {
+          throw new GLException("Error while querying pixel format " + pformats[i] +
+                                "'s (index " + i + "'s) capabilities for debugging");
+        }
+        System.err.print("pixel format " + pformats[i] + " (index " + i + "): ");
+        System.err.print( "r: " + ivalues[0]);
+        System.err.print(" g: " + ivalues[1]);
+        System.err.print(" b: " + ivalues[2]);
+        System.err.print(" a: " + ivalues[3]);
+        System.err.print(" depth: " + ivalues[4]);
+        System.err.print(" multisample: " + ivalues[6]);
+        System.err.print(" samples: " + ivalues[7]);
+        if (useFloat) {
+          if (ati) {
+            if (ivalues[5] == GL.WGL_TYPE_RGBA_FLOAT_ATI) {
+              System.err.print(" [ati float]");
+            } else if (ivalues[5] != GL.WGL_TYPE_RGBA_ARB) {
+              System.err.print(" [unknown pixel type " + ivalues[5] + "]");
+            }
+          } else {
+            if (ivalues[5] != 0) {
+              System.err.print(" [float]");
+            }
+          }
+        }
+
+        if (ivalues[8] != 0) {
+          System.err.print(" [pbuffer]");
+        }
+        System.err.println();
+      }
+    }
+
+    long tmpBuffer = 0;
+    int whichFormat = 0;
+    // Loop is a workaround for bugs in NVidia's recent drivers
+    do {
+      int format = pformats[whichFormat];
+
+      // Create the p-buffer.
+      niattribs = 0;
+
+      if (rtt) {
+        iattributes[niattribs++]   = GL.WGL_TEXTURE_FORMAT_ARB;
+        if (useFloat) {
+          iattributes[niattribs++] = GL.WGL_TEXTURE_FLOAT_RGB_NV;
+        } else {
+          iattributes[niattribs++] = GL.WGL_TEXTURE_RGBA_ARB;
+        }
+
+        iattributes[niattribs++] = GL.WGL_TEXTURE_TARGET_ARB;
+        iattributes[niattribs++] = rect ? GL.WGL_TEXTURE_RECTANGLE_NV : GL.WGL_TEXTURE_2D_ARB;
+
+        iattributes[niattribs++] = GL.WGL_MIPMAP_TEXTURE_ARB;
+        iattributes[niattribs++] = GL.GL_FALSE;
+
+        iattributes[niattribs++] = GL.WGL_PBUFFER_LARGEST_ARB;
+        iattributes[niattribs++] = GL.GL_FALSE;
+      }
+
+      iattributes[niattribs++] = 0;
+
+      tmpBuffer = gl.wglCreatePbufferARB(parentHdc, format, initWidth, initHeight, iattributes, 0);
+      ++whichFormat;
+    } while ((tmpBuffer == 0) && (whichFormat < nformats));
+
+    if (tmpBuffer == 0) {
+      throw new GLException("pbuffer creation error: wglCreatePbufferARB() failed: tried " + nformats +
+                            " pixel formats, last error was: " + wglGetLastError());
+    }
+
+    // Get the device context.
+    long tmpHdc = gl.wglGetPbufferDCARB(tmpBuffer);
+    if (tmpHdc == 0) {
+      throw new GLException("pbuffer creation error: wglGetPbufferDCARB() failed");
+    }
+
+    // Set up instance variables
+    buffer = tmpBuffer;
+    hdc    = tmpHdc;
+    cachedGL = gl;
+
+    // Determine the actual width and height we were able to create.
+    int[] tmp = new int[1];
+    gl.wglQueryPbufferARB( buffer, GL.WGL_PBUFFER_WIDTH_ARB,  tmp, 0 );
+    width = tmp[0];
+    gl.wglQueryPbufferARB( buffer, GL.WGL_PBUFFER_HEIGHT_ARB, tmp, 0 );
+    height = tmp[0];
+
+    if (DEBUG) {
+      System.err.println("Created pbuffer " + width + " x " + height);
+    }
+  }
+
+  public GLCapabilities getCapabilities() {
+    return capabilities;
+  }
+
+  public long getPbuffer() {
+    return buffer;
+  }
+
+  public int getFloatingPointMode() {
+    return floatMode;
+  }
+
+  public void swapBuffers() throws GLException {
+    // FIXME: this doesn't make sense any more because we don't have
+    // access to our OpenGL context here
+    /*
+    // FIXME: do we need to do anything if the pbuffer is double-buffered?
+    // For now, just grab the pixels for the render-to-texture support.
+    if (rtt && !hasRTT) {
+      if (DEBUG) {
+        System.err.println("Copying pbuffer data to GL_TEXTURE_2D state");
+      }
+
+      GL gl = getGL();
+      gl.glCopyTexSubImage2D(textureTarget, 0, 0, 0, 0, 0, width, height);
+    }
+    */
+  }
+
+  private static String wglGetLastError() {
+    return WindowsGLContextFactory.wglGetLastError();
+  }
+}