New getPlatform() method added

src/java/org/lwjgl/Sys.java

@@ -83,6 +83,7 @@ public final class Sys {
 	 */
 	public static final boolean DEBUG;
 	
+	
 	private static boolean _debug;
 	static {
 		try {
@@ -100,6 +101,20 @@ public final class Sys {
 		}
 	}
 	
+	/*
+	 * Platforms. This will let you determine which platform you are running
+	 * on, which is handy to know for some GL calls.
+	 */
+
+	/** Windows platform */	
+	public static final int PLATFORM_WGL = 0;
+	
+	/** GLX (Linux/Unix) platform */
+	public static final int PLATFORM_GLX = 1;
+	
+	/** Apply platform */
+	public static final int PLATFORM_AGL = 2;
+	
 	/**
 	 * @return the name of the native library to load
 	 */
@@ -207,5 +222,15 @@ public final class Sys {
 	 * @param message The message text for the alert.
 	 */
 	public static native void alert(String title, String message);
+	
+	/**
+	 * Returns the operating system windowing platform. This will be one of the
+	 * constants defined above. There is no "unknown" platform; a native library port
+	 * has to provide a unique platform number for this mechanism to work. If the LWJGL
+	 * is ported to, say, QNX, we will have a PLATFORM_QNX at the ready.
+	 * 
+	 * @return the windowing system
+	 */
+	public static native int getPlatform();
 		
 } 

src/native/common/org_lwjgl_Sys.h

@@ -19,6 +19,12 @@ extern "C" {
 /* Inaccessible static: LIBRARY_NAME */
 /* Inaccessible static: DEBUG */
 /* Inaccessible static: _debug */
+#undef org_lwjgl_Sys_PLATFORM_WGL
+#define org_lwjgl_Sys_PLATFORM_WGL 0L
+#undef org_lwjgl_Sys_PLATFORM_GLX
+#define org_lwjgl_Sys_PLATFORM_GLX 1L
+#undef org_lwjgl_Sys_PLATFORM_AGL
+#define org_lwjgl_Sys_PLATFORM_AGL 2L
 /* Inaccessible static: class_000240 */
 /*
  * Class:     org_lwjgl_Sys
@@ -76,6 +82,14 @@ JNIEXPORT void JNICALL Java_org_lwjgl_Sys_setProcessPriority
 JNIEXPORT void JNICALL Java_org_lwjgl_Sys_alert
   (JNIEnv *, jclass, jstring, jstring);
 
+/*
+ * Class:     org_lwjgl_Sys
+ * Method:    getPlatform
+ * Signature: ()I
+ */
+JNIEXPORT jint JNICALL Java_org_lwjgl_Sys_getPlatform
+  (JNIEnv *, jclass);
+
 #ifdef __cplusplus
 }
 #endif

src/native/win32/org_lwjgl_Sys.cpp

@@ -49,6 +49,21 @@ __int64		hires_timer_freq;			// Hires timer frequency
 __int64		hires_timer_start;			// Hires timer start
 __int64		hires_timer;				// Hires timer current time
 
+// Platform
+#ifdef _WIN32
+#define PLATFORM 0
+#else
+#ifdef _X11
+#define PLATFORM 1
+#else
+#ifdef APPLE
+#define PLATFORM 2
+#else
+#error Unsupported Platform!
+#endif
+#endif
+
+
 /*
  * Class:     org_lwjgl_Sys
  * Method:    getDirectBufferAddress
@@ -163,3 +178,15 @@ JNIEXPORT void JNICALL Java_org_lwjgl_Sys_alert
 	env->ReleaseStringUTFChars(message, eMessageText);
 	env->ReleaseStringUTFChars(title, cTitleBarText);
 }
+
+/*
+ * Class:     org_lwjgl_Sys
+ * Method:    getPlatform
+ * Signature: ()I
+ */
+JNIEXPORT void JNICALL Java_org_lwjgl_Sys_getPlatform
+  (JNIEnv * env, jclass clazz)
+{
+	return org_lwjgl_Sys_PLATFORM_WGL;
+}
+