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New context management code (incomplete)

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Caspian Rychlik-Prince 2004-02-23 23:42:58 +00:00
parent 5a8267a1e2
commit 6a58bc26e6
14 changed files with 501 additions and 120 deletions
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48
src/java/org/lwjgl/opengl/GLContext.java
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@ -36,7 +36,7 @@ import java.lang.ref.WeakReference;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.Iterator;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
@ -60,6 +60,9 @@ public final class GLContext {
/** A map of WeakReferences to contexts to LWJGL pointers-to-extension-structs */
private static final Map contextMap = new HashMap();
/** A map of WeakReferences to contents to Sets of extension names */
private static final Map extensionsMap = new HashMap();
/*
* Available extensions
*/
@ -132,9 +135,6 @@ public final class GLContext {
public static boolean GL_ATI_vertex_streams;
public static boolean GL_ATI_separate_stencil;
public static boolean GL_ATIX_point_sprites;
public static boolean GL_ATIX_texture_env_route;
public static boolean GL_NV_blend_square;
public static boolean GL_NV_copy_depth_to_color;
public static boolean GL_NV_depth_clamp;
@ -177,25 +177,6 @@ public final class GLContext {
System.loadLibrary(Sys.getLibraryName());
}
private static void setExtensionFields(Set exts, HashMap field_map) {
Sys.log("Available extensions:");
Iterator it = exts.iterator();
while ( it.hasNext() ) {
String ext = (String)it.next();
Sys.log(ext);
Field f = (Field)field_map.get(ext);
if ( f != null ) {
try {
f.setBoolean(GLContext.class, true);
} catch (IllegalAccessException e) {
e.printStackTrace(System.err);
}
}
}
}
/**
* Determine which extensions are available. Use this to initialize capability fields. Can only be
* called _after_ a GLWindow or Pbuffer has been created (or a context from some other GL library).
@ -204,23 +185,19 @@ public final class GLContext {
*
* @param exts A Set of OpenGL extension string names
*/
public static void determineAvailableExtensions(Set exts) {
private static void determineAvailableExtensions(Set exts) {
// Grab all the public static booleans out of this class
Field[] fields = GLContext.class.getDeclaredFields();
HashMap map = new HashMap(fields.length);
for ( int i = 0; i < fields.length; i++ ) {
if ( Modifier.isStatic(fields[i].getModifiers()) && fields[i].getType() == boolean.class ) {
map.put(fields[i].getName(), fields[i]);
// reset fields
try {
fields[i].setBoolean(GLContext.class, false);
fields[i].setBoolean(GLContext.class, exts.contains(fields[i].getName()));
} catch (IllegalAccessException e) {
e.printStackTrace(System.err);
}
}
}
setExtensionFields(exts, map);
}
/**
@ -248,27 +225,30 @@ public final class GLContext {
// Look in the context map to see if we've encountered this context before
Integer encountered = (Integer) contextMap.get(currentContext);
Set exts;
if (encountered != null) {
exts = (Set) extensionsMap.get(currentContext);
reinit(encountered.intValue());
} else {
contextMap.put(currentContext, new Integer(init()));
exts = new HashSet();
contextMap.put(currentContext, new Integer(init(exts)));
}
// Now determine the available extensions
determineAvailableExtensions(exts);
}
/**
* Native method to initialize a context from scratch or load its function pointers from a
* cache.
* @param exts An empty Set of Strings that will be filled with the names of enabled extensions
* @return a LWJGL context-index-pointer
*/
private static native int init();
private static native int init(Set exts);
/**
* Native method to re-initialize a context.
* @param context Hash code of the context object
*/
private static native int reinit(int context);
private static native void reinit(int context);
}