From 991622dd909d94b6ed83b84b744f0839b9ab6807 Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Fri, 23 Feb 2001 05:14:46 +0000
Subject: Version 2.6.0.0

---
 CNativeCode/GLDrawableFactory_X11_SunJDK13.c | 106 +++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 CNativeCode/GLDrawableFactory_X11_SunJDK13.c

(limited to 'CNativeCode/GLDrawableFactory_X11_SunJDK13.c')

diff --git a/CNativeCode/GLDrawableFactory_X11_SunJDK13.c b/CNativeCode/GLDrawableFactory_X11_SunJDK13.c
new file mode 100644
index 0000000..51e204c
--- /dev/null
+++ b/CNativeCode/GLDrawableFactory_X11_SunJDK13.c
@@ -0,0 +1,106 @@
+#include "gl4java_drawable_X11SunJDK13GLDrawableFactory.h"
+#include "OpenGL_X11_common.h"
+
+JNIEXPORT jlong JNICALL
+Java_gl4java_drawable_X11SunJDK13GLDrawableFactory_glXChooseVisualID
+	(JNIEnv *env,
+         jclass unused,
+	 jint screen,
+	 jlong display,
+	 jobject capsObj, jboolean verbose)
+{
+    Display *disp = (Display *) ( (PointerHolder)display );
+
+    XVisualInfo * visual=NULL;
+    int visualAttribList[32];
+    int done=0;
+
+    GLCapabilities glCaps;
+
+    jboolean ok = javaGLCapabilities2NativeGLCapabilities ( env, 
+			  capsObj, &glCaps );
+
+    if(JNI_TRUE!=ok)
+    {
+        fprintf(stderr,"GL4Java X11SunJDK13GLDrawableFactory ERROR: gl4java/GLCapabilities fields not accessible\n");
+	fflush(stderr);
+        return JNI_FALSE;
+    }
+
+    /* JAU: What the hell .. 
+       The java given display is not alway functional .. ?
+
+       If running without this ugly thing,
+       the derived SimpleGLAnimApplet1 get's an X11 async reply
+       if the thing is initialized by the applet's init method !
+     */
+    disp = XOpenDisplay( NULL );
+    screen = DefaultScreen( disp );
+
+    if(JNI_TRUE==verbose)
+	    fprintf(stdout," display=%p, screen=%d\n", disp, (int)screen);
+
+    while(!done && visual==NULL)
+    {
+        (void) setVisualAttribListByGLCapabilities( visualAttribList, &glCaps);
+    
+        if(JNI_TRUE==verbose)
+        {
+    	    fprintf(stdout, "X11DrawableFactory.glXChooseVisual: try capabilities:\n");
+    	    printGLCapabilities ( &glCaps );
+        }
+
+        visual = glXChooseVisual( disp, screen, visualAttribList );
+    
+        if(JNI_TRUE==verbose)
+        {
+        	if(visual!=NULL)
+        	{
+        	    fprintf(stdout, "X11DrawableFactory.glXChooseVisual: found visual(ID:%d(0x%X)):\n", 
+        		(int) visual->visualid,
+        		(int) visual->visualid);
+        		printVisualInfo ( disp, visual);
+        	}
+        	fflush(stdout);
+        }
+	/**
+	 * Falling-Back the exact (min. requirement) parameters ..
+	 */
+        if(visual==NULL && glCaps.stereo==STEREO_ON) {
+		glCaps.stereo=STEREO_OFF;
+        } else if(visual==NULL && glCaps.stencilBits>32) {
+		glCaps.stencilBits=32;
+        } else if(visual==NULL && glCaps.stencilBits>16) {
+		glCaps.stencilBits=16;
+        } else if(visual==NULL && glCaps.stencilBits>8) {
+		glCaps.stencilBits=8;
+        } else if(visual==NULL && glCaps.stencilBits>0) {
+		glCaps.stencilBits=0;
+        } else if(visual==NULL && glCaps.buffer==BUFFER_DOUBLE) {
+	        glCaps.buffer=BUFFER_SINGLE;
+        } else done=1; /* forget it .. */
+    }
+
+    if(visual==NULL)
+    {
+        fprintf(stdout, "X11DrawableFactory.glXChooseVisual: no visual\n");
+    	return 0;
+    }
+
+    (void ) setGLCapabilities ( disp, visual, &glCaps );
+
+    if(JNI_TRUE==verbose)
+    {
+	fprintf(stdout,"X11DrawableFactory.glXChooseVisual: writing capabilities to GLContext's java object\n");
+	fflush(stdout);
+    }
+
+    (void) nativeGLCapabilities2JavaGLCapabilities
+		(env, capsObj, &glCaps);
+
+    /* JAU: see above .. */
+    XCloseDisplay( disp );
+
+    return (jlong) (visual->visualid);
+}
+
-- 
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