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/*
* 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.x11.glx;
import javax.media.opengl.*;
import com.sun.opengl.impl.*;
import com.sun.opengl.impl.x11.*;
import java.nio.LongBuffer;
public class X11PbufferGLXDrawable extends X11GLXDrawable {
// drawable in superclass is a GLXPbuffer
private long fbConfig;
protected static final int MAX_PFORMATS = 256;
protected static final int MAX_ATTRIBS = 256;
protected X11PbufferGLXDrawable(GLDrawableFactory factory,
GLCapabilities requestedCapabilities,
int width, int height) {
super(factory, new NullWindow(), true, requestedCapabilities, null);
if (width <= 0 || height <= 0) {
throw new GLException("Width and height of pbuffer must be positive (were (" +
width + ", " + height + "))");
}
NullWindow nw = (NullWindow) getNativeWindow();
nw.setSize(width, height);
if (DEBUG) {
System.out.println("Pbuffer caps on init: " + requestedCapabilities +
(requestedCapabilities.getPbufferRenderToTexture() ? " [rtt]" : "") +
(requestedCapabilities.getPbufferRenderToTextureRectangle() ? " [rect]" : "") +
(requestedCapabilities.getPbufferFloatingPointBuffers() ? " [float]" : ""));
}
nw.setDisplayHandle(X11Util.getDisplayConnection());
createPbuffer();
}
public GLContext createContext(GLContext shareWith) {
return new X11PbufferGLXContext(this, shareWith);
}
public void destroy() {
getFactoryImpl().lockToolkit();
try {
NullWindow nw = (NullWindow) getNativeWindow();
if (nw.getSurfaceHandle() != 0) {
GLX.glXDestroyPbuffer(nw.getDisplayHandle(), nw.getSurfaceHandle());
nw.setSurfaceHandle(0);
}
nw.setDisplayHandle(0);
} finally {
getFactoryImpl().unlockToolkit();
}
}
private void createPbuffer() {
getFactoryImpl().lockToolkit();
try {
NullWindow nw = (NullWindow) getNativeWindow();
long display = nw.getDisplayHandle();
if (nw.getDisplayHandle()== 0) {
throw new GLException("Null display");
}
int screen = X11Lib.DefaultScreen(display);
nw.setScreenIndex(screen);
GLCapabilities capabilities = getRequestedGLCapabilities();
if (capabilities.getPbufferRenderToTexture()) {
throw new GLException("Render-to-texture pbuffers not supported yet on X11");
}
if (capabilities.getPbufferRenderToTextureRectangle()) {
throw new GLException("Render-to-texture-rectangle pbuffers not supported yet on X11");
}
int[] iattributes = X11GLXDrawableFactory.glCapabilities2AttribList(capabilities,
X11Util.isMultisampleAvailable(),
true, display, screen);
int[] nelementsTmp = new int[1];
// FIXME: we inherently leak the memory from the underlying call
// to glXChooseFBConfig because a copy of the original Buffer is
// made to expand each pointer from 32 to 64 bits
LongBuffer fbConfigs = GLX.glXChooseFBConfig(display, screen, iattributes, 0, nelementsTmp, 0);
if (fbConfigs == null || fbConfigs.limit() == 0 || fbConfigs.get(0) == 0) {
throw new GLException("pbuffer creation error: glXChooseFBConfig() failed");
}
int nelements = nelementsTmp[0];
if (nelements <= 0) {
throw new GLException("pbuffer creation error: couldn't find a suitable frame buffer configuration");
}
// Note that we currently don't allow selection of anything but
// the first GLXFBConfig in the returned list
long fbConfig = fbConfigs.get(0);
if (DEBUG) {
System.err.println("Found " + fbConfigs.limit() + " 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.
int niattribs = 0;
iattributes[niattribs++] = GLXExt.GLX_PBUFFER_WIDTH;
iattributes[niattribs++] = nw.getWidth();
iattributes[niattribs++] = GLXExt.GLX_PBUFFER_HEIGHT;
iattributes[niattribs++] = nw.getHeight();
iattributes[niattribs++] = 0;
long drawable = GLX.glXCreatePbuffer(display, fbConfig, iattributes, 0);
if (drawable == 0) {
// FIXME: query X error code for detail error message
throw new GLException("pbuffer creation error: glXCreatePbuffer() failed");
}
// Set up instance variables
nw.setSurfaceHandle(drawable);
this.fbConfig = fbConfig;
// Pick innocent query values if multisampling or floating point buffers not available
int sbAttrib = X11Util.isMultisampleAvailable() ? GLXExt.GLX_SAMPLE_BUFFERS: GLX.GLX_RED_SIZE;
int samplesAttrib = X11Util.isMultisampleAvailable() ? GLXExt.GLX_SAMPLES: GLX.GLX_RED_SIZE;
int floatNV = capabilities.getPbufferFloatingPointBuffers() ? GLXExt.GLX_FLOAT_COMPONENTS_NV : GLX.GLX_RED_SIZE;
// Query the fbconfig to determine its GLCapabilities
int[] iattribs = {
GLX.GLX_DOUBLEBUFFER,
GLX.GLX_STEREO,
GLX.GLX_RED_SIZE,
GLX.GLX_GREEN_SIZE,
GLX.GLX_BLUE_SIZE,
GLX.GLX_ALPHA_SIZE,
GLX.GLX_DEPTH_SIZE,
GLX.GLX_STENCIL_SIZE,
GLX.GLX_ACCUM_RED_SIZE,
GLX.GLX_ACCUM_GREEN_SIZE,
GLX.GLX_ACCUM_BLUE_SIZE,
GLX.GLX_ACCUM_ALPHA_SIZE,
sbAttrib,
samplesAttrib,
floatNV
};
int[] ivalues = new int[iattribs.length];
queryFBConfig(display, fbConfig, iattribs, iattribs.length, ivalues);
setChosenGLCapabilities(X11GLXDrawableFactory.attribList2GLCapabilities(iattribs, iattribs.length, ivalues, true));
// Determine the actual width and height we were able to create.
int[] tmp = new int[1];
GLX.glXQueryDrawable(display, drawable, GLXExt.GLX_WIDTH, tmp, 0);
int width = tmp[0];
GLX.glXQueryDrawable(display, drawable, GLXExt.GLX_HEIGHT, tmp, 0);
int height = tmp[0];
nw.setSize(width, height);
if (DEBUG) {
System.err.println("Created pbuffer " + width + " x " + height);
}
} finally {
getFactoryImpl().unlockToolkit();
}
}
public int getFloatingPointMode() {
// Floating-point pbuffers currently require NVidia hardware on X11
return GLPbuffer.NV_FLOAT;
}
public long getFBConfig() {
return fbConfig;
}
private int queryFBConfig(long display, long 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];
}
private void queryFBConfig(long display, long fbConfig, int[] attribs, int nattribs, int[] values) {
int[] tmp = new int[1];
for (int i = 0; i < nattribs; i++) {
if (GLX.glXGetFBConfigAttrib(display, fbConfig, attribs[i], tmp, 0) != 0) {
throw new GLException("glXGetFBConfigAttrib failed");
}
values[i] = tmp[0];
}
}
}
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