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package gl4java.drawable;
import java.awt.*;
import java.lang.reflect.*;
import java.util.*;
import sun.awt.*;
import gl4java.*;
import java.security.*;
public class Win32SunJDK13GLDrawableFactory
extends SunJDK13GLDrawableFactory
{
// Use reflection to get access to internal methods in sun.awt.*
private static Method getMaxConfigsMethod;
private static Method getDefaultPixIDMethod;
static {
try {
getMaxConfigsMethod = (Method)
AccessController.doPrivileged(new PrivilegedAction() {
public Object run()
{
try {
return
sun.awt.Win32GraphicsDevice.class.
getDeclaredMethod("getMaxConfigs",
new Class[] { Integer.TYPE });
} catch (Exception e) {
e.printStackTrace();
throw new InternalError(e.toString());
}
}});
getMaxConfigsMethod.setAccessible(true);
getDefaultPixIDMethod = (Method)
AccessController.doPrivileged(new PrivilegedAction() {
public Object run()
{
try {
return
sun.awt.Win32GraphicsDevice.class.
getDeclaredMethod("getDefaultPixID",
new Class[] { Integer.TYPE });
} catch (Exception e) {
e.printStackTrace();
throw new InternalError(e.toString());
}
}});
getDefaultPixIDMethod.setAccessible(true);
} catch (Exception e) {
e.printStackTrace();
throw new InternalError(e.toString());
}
}
public Win32SunJDK13GLDrawableFactory() {
// describeAllGraphicsConfigurations();
}
public GraphicsConfiguration
getGraphicsConfiguration(GLCapabilities capabilities,
GraphicsDevice device) {
// On Windows, ChoosePixelFormat does not work as desired; it
// shoehorns the given pixel format descriptor into what a
// particular window can render. Instead we enumerate all possible
// pixel formats for a given GraphicsDevice and try to find one
// matching the given capabilities. To do this we provide
// accessors which query the OpenGL-related properties of a
// GraphicsConfiguration. FIXME: should implement better selection
// algorithm; this one does not choose the most minimal.
Win32GraphicsConfig[] configs =
getAllGraphicsConfigurations((Win32GraphicsDevice) device);
int maxDepth = 0;
int maxColor = 0;
int maxStencil = 0;
int maxAccum = 0;
for (int i = 0; i < configs.length; i++) {
Win32GraphicsConfig config = configs[i];
if( ! getConfigSupportsOpenGL(config) )
continue;
if(getConfigDepthBits(config)>maxDepth) maxDepth=getConfigDepthBits(config);
if(getConfigColorBits(config)>maxColor) maxColor=getConfigColorBits(config);
if(getConfigStencilBits(config)>maxStencil) maxStencil=getConfigStencilBits(config);
if(getConfigAccumBits(config)>maxAccum) maxAccum=getConfigAccumBits(config);
}
if(maxDepth>24) maxDepth=24;
/** fall down to overall's maximum **/
if(capabilities.getDepthBits()>maxDepth) capabilities.setDepthBits(maxDepth);
if(capabilities.getStencilBits()>maxStencil) capabilities.setStencilBits(maxStencil);
if(getCapsColorBits(capabilities)>maxColor)
{ capabilities.setRedBits(maxColor/3);
capabilities.setGreenBits(maxColor/3+maxColor%3);
capabilities.setBlueBits(maxColor/3);
}
if(getCapsAccumBits(capabilities)>maxAccum)
{ capabilities.setAccumRedBits(maxAccum/3);
capabilities.setAccumGreenBits(maxAccum/3+maxAccum%3);
capabilities.setAccumBlueBits(maxAccum/3);
}
Win32GraphicsConfig config = configsSupportsCapabilities(configs, capabilities, maxDepth);
if(config!=null) return config;
/* lets .. fall down .. individual .. */
/* general normals .. */
boolean tryit = false;
if(capabilities.getDepthBits()>24) { capabilities.setDepthBits(24); tryit=true; }
else if(capabilities.getDepthBits()>16) { capabilities.setDepthBits(16); tryit=true; }
if(getCapsColorBits(capabilities)>24)
{ capabilities.setRedBits(8); capabilities.setGreenBits(8); capabilities.setBlueBits(8); tryit=true; }
if(capabilities.getAlphaBits()>8) { capabilities.setAlphaBits(8); tryit=true; }
if(tryit) config = configsSupportsCapabilities(configs, capabilities, maxDepth);
if(config!=null) return config; tryit=false;
/* no stereo .. */
if(capabilities.getStereo()) { capabilities.setStereo(false); tryit=true; }
if(tryit) config = configsSupportsCapabilities(configs, capabilities, maxDepth);
if(config!=null) return config; tryit=false;
/* stencil<=16 .. */
if(capabilities.getStencilBits()>16) { capabilities.setStencilBits(16); tryit=true; }
if(tryit) config = configsSupportsCapabilities(configs, capabilities, maxDepth);
if(config!=null) return config; tryit=false;
/* accum rgb each <=16.. */
if(getCapsAccumBits(capabilities)>48)
{ capabilities.setAccumRedBits(16); capabilities.setAccumGreenBits(16); capabilities.setAccumBlueBits(16);
tryit=true; }
if(tryit) config = configsSupportsCapabilities(configs, capabilities, maxDepth);
if(config!=null) return config; tryit=false;
/* stencil<=8 .. */
if(capabilities.getStencilBits()>8) { capabilities.setStencilBits(8); tryit=true; }
if(tryit) config = configsSupportsCapabilities(configs, capabilities, maxDepth);
if(config!=null) return config; tryit=false;
/* accum rgb each <=8.. */
if(getCapsAccumBits(capabilities)>24)
{ capabilities.setAccumRedBits(8); capabilities.setAccumGreenBits(8); capabilities.setAccumBlueBits(8);
tryit=true; }
if(tryit) config = configsSupportsCapabilities(configs, capabilities, maxDepth);
if(config!=null) return config; tryit=false;
/* stencil=0 .. */
if(capabilities.getStencilBits()>0) { capabilities.setStencilBits(0); tryit=true; }
if(tryit) config = configsSupportsCapabilities(configs, capabilities, maxDepth);
if(config!=null) return config; tryit=false;
/* alpha=0 */
if(capabilities.getAlphaBits()>0) { capabilities.setAlphaBits(0); tryit=true; }
if(tryit) config = configsSupportsCapabilities(configs, capabilities, maxDepth);
if(config!=null) return config; tryit=false;
return null;
}
//----------------------------------------------------------------------
// Internals only below this point
//
private Win32GraphicsConfig configsSupportsCapabilities(Win32GraphicsConfig[] configs,
GLCapabilities glCaps,
int maxDepth)
{
if(GLContext.gljNativeDebug)
{
System.out.println("---------------");
System.out.println("---------------");
System.out.println("---------------");
System.out.println("->check caps: "+glCaps);
System.out.println("---------------");
}
for (int i = 0; i < configs.length; i++) {
if (configSupportsCapabilities(configs[i], glCaps, maxDepth)) {
glCaps.setNativeVisualID( (long) configs[i].getVisual() );
return configs[i];
}
}
return null;
}
private Win32GraphicsConfig[]
getAllGraphicsConfigurations(Win32GraphicsDevice device)
{
try {
int max =
((Integer) getMaxConfigsMethod.invoke(device,
new Object[] {
new Integer(device.getScreen())
})).intValue();
int defaultPixID =
((Integer) getDefaultPixIDMethod.invoke(device,
new Object[] {
new Integer(device.getScreen())
})).intValue();
java.util.List l = new ArrayList(max);
if (defaultPixID == 0) {
// From Win32GraphicsDevice: workaround for failing GDI calls
l.add(Win32GraphicsConfig.getConfig(device, defaultPixID));
} else {
for (int i = 1; i <= max; i++) {
l.add(Win32GraphicsConfig.getConfig(device, i));
}
}
Win32GraphicsConfig[] configs = new Win32GraphicsConfig[l.size()];
l.toArray(configs);
return configs;
} catch (Exception e) {
e.printStackTrace();
throw new InternalError(e.toString());
}
}
private boolean configSupportsCapabilities(Win32GraphicsConfig config,
GLCapabilities caps, int maxDepth)
{
boolean res = ( getConfigSupportsOpenGL(config)
&& getConfigDoubleBuffered(config) == caps.getDoubleBuffered()
&& caps.getTrueColor() == getConfigTrueColor(config)
&& caps.getDepthBits() <= getConfigDepthBits(config)
&& maxDepth >= getConfigDepthBits(config)
&& caps.getStencilBits() <= getConfigStencilBits(config)
&& (caps.getStereo() ? getConfigStereo(config):true)
&& getCapsColorBits(caps) <= getConfigColorBits(config)
/* && caps.getAlphaBits() <= getConfigAlphaBits(config) N.A. */
&& getCapsAccumBits(caps) <= getConfigAccumBits(config));
if(GLContext.gljNativeDebug)
{
System.out.println("->against config: ");
describeGraphicsConfiguration(config);
System.out.println("---------------");
System.out.println("result: "+res);
System.out.println("---------------");
}
return res;
}
private static int getCapsColorBits(GLCapabilities caps) {
return caps.getRedBits() + caps.getGreenBits() + caps.getBlueBits();
}
private static int getCapsAccumBits(GLCapabilities caps) {
return caps.getAccumRedBits() + caps.getAccumGreenBits() + caps.getAccumBlueBits();
}
private static boolean getConfigSupportsOpenGL(Win32GraphicsConfig config) {
return getVisualSupportsOpenGL(getScreen(config), config.getVisual());
}
private static boolean getConfigDoubleBuffered(Win32GraphicsConfig config) {
return getVisualDoubleBuffered(getScreen(config), config.getVisual());
}
private static boolean getConfigTrueColor(Win32GraphicsConfig config) {
return getVisualTrueColor(getScreen(config), config.getVisual());
}
private static boolean getConfigStereo(Win32GraphicsConfig config) {
return getVisualStereo(getScreen(config), config.getVisual());
}
private static int getConfigDepthBits(Win32GraphicsConfig config) {
return getVisualDepthBits(getScreen(config), config.getVisual());
}
private static int getConfigStencilBits(Win32GraphicsConfig config) {
return getVisualStencilBits(getScreen(config), config.getVisual());
}
private static int getConfigColorShiftBits(Win32GraphicsConfig config) {
return getVisualColorShiftBits(getScreen(config), config.getVisual());
}
private static int getConfigColorBits(Win32GraphicsConfig config) {
return getVisualColorBits(getScreen(config), config.getVisual());
}
private static int getConfigAlphaBits(Win32GraphicsConfig config) {
return getVisualAlphaBits(getScreen(config), config.getVisual());
}
private static int getConfigAccumBits(Win32GraphicsConfig config) {
return getVisualAccumBits(getScreen(config), config.getVisual());
}
private static int getScreen(Win32GraphicsConfig config) {
return ((Win32GraphicsDevice) config.getDevice()).getScreen();
}
// Native support routines that are not in GraphicsConfiguration or
// Win32GraphicsConfig. These are only necessary on Windows because
// X11's glXChooseVisual can implement getGraphicsConfiguration
// directly.
private static native boolean getVisualSupportsOpenGL (int screen, int pixelFormatIdx);
private static native boolean getVisualDoubleBuffered (int screen, int pixelFormatIdx);
private static native boolean getVisualTrueColor (int screen, int pixelFormatIdx);
private static native boolean getVisualStereo (int screen, int pixelFormatIdx);
private static native int getVisualDepthBits (int screen, int pixelFormatIdx);
private static native int getVisualStencilBits (int screen, int pixelFormatIdx);
private static native int getVisualColorShiftBits (int screen, int pixelFormatIdx);
private static native int getVisualColorBits (int screen, int pixelFormatIdx);
private static native int getVisualAlphaBits (int screen, int pixelFormatIdx);
private static native int getVisualAccumBits (int screen, int pixelFormatIdx);
// Debugging only
private void describeAllGraphicsConfigurations() {
Win32GraphicsConfig[] configs =
getAllGraphicsConfigurations(
(Win32GraphicsDevice)
GraphicsEnvironment.getLocalGraphicsEnvironment().
getDefaultScreenDevice()
);
System.err.println(configs.length + " graphics configurations found");
for (int i = 0; i < configs.length; i++) {
System.err.println(i + ".");
Win32GraphicsConfig config = configs[i];
describeGraphicsConfiguration(config);
System.err.println();
}
}
private void describeGraphicsConfiguration(Win32GraphicsConfig config)
{
boolean supportsOpenGL = getConfigSupportsOpenGL(config);
System.err.println(" SupportsOpenGL: " + supportsOpenGL);
if (supportsOpenGL) {
System.err.print(" DoubleBuffered: " + getConfigDoubleBuffered(config));
System.err.print(" TrueColor: " + getConfigTrueColor(config));
System.err.println(" Stereo: " + getConfigStereo(config));
System.err.print(" DepthBits: " + getConfigDepthBits(config));
System.err.println(" StencilBits: " + getConfigStencilBits(config));
System.err.print(" ColorBits: " + getConfigColorBits(config));
System.err.print(" AlphaBits: " + getConfigAlphaBits(config));
System.err.println(" AccumBits: " + getConfigAccumBits(config));
}
}
}
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