Fixed Issue 173: Adjust gamma, brightness and contrast

Added com.sun.opengl.util.Gamma supporting adjusting of gamma,
brightness, and contrast. API and implementation derived from code in
the LWJGL project. Added demos.gamma.TestGamma demo illustrating how
to use the APIs. Tested on Linux, Mac OS X and Windows. No Solaris
support at this time, although future Solaris releases, being based on
the Xorg server, will probably have support for the required
XF86VidMode extension.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@557 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 23 insertions, 0 deletions

diff --git a/make/stub_includes/x11/window-system.c b/make/stub_includes/x11/window-system.c
index 6af85eeb9..00b474899 100644
--- a/make/stub_includes/x11/window-system.c
+++ b/make/stub_includes/x11/window-system.c
@@ -35,3 +35,26 @@ extern int XFreePixmap(
     Display*		/* display */,
     Pixmap		/* pixmap */
 );
+
+// Routines for changing gamma settings.
+// Note that these are not currently supported on Solaris.
+Bool XF86VidModeGetGammaRampSize(
+    Display *display,
+    int screen,
+    int* size);
+
+Bool XF86VidModeGetGammaRamp(
+    Display *display,
+    int screen,
+    int size,
+    unsigned short *red_array,
+    unsigned short *green_array,
+    unsigned short *blue_array);
+
+Bool XF86VidModeSetGammaRamp(
+    Display *display,
+    int screen,
+    int size,
+    unsigned short *red_array,
+    unsigned short *green_array,
+    unsigned short *blue_array);