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-rw-r--r--src/jogl/classes/jogamp/opengl/x11/glx/X11GLXGraphicsConfiguration.java13
1 files changed, 12 insertions, 1 deletions
diff --git a/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXGraphicsConfiguration.java b/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXGraphicsConfiguration.java
index 575106555..fd2048552 100644
--- a/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXGraphicsConfiguration.java
+++ b/src/jogl/classes/jogamp/opengl/x11/glx/X11GLXGraphicsConfiguration.java
@@ -252,6 +252,14 @@ public class X11GLXGraphicsConfiguration extends X11GraphicsConfiguration implem
return null;
}
+ static boolean GLXFBConfigHasAlphaMask(long dpy, long fbcfg, long visual) {
+ XRenderPictFormat renderPictFmt = X11Lib.XRenderFindVisualFormat(dpy, visual);
+ if(null == renderPictFmt) {
+ return false;
+ }
+ return renderPictFmt.getDirect().getAlphaMask() > 0 ;
+ }
+
static boolean GLXFBConfig2GLCapabilities(ArrayList capsBucket,
GLProfile glp, long display, long fbcfg,
int winattrmask, boolean isMultisampleAvailable) {
@@ -298,6 +306,9 @@ public class X11GLXGraphicsConfiguration extends X11GraphicsConfiguration implem
res.setSampleBuffers(glXGetFBConfig(display, fbcfg, GLX.GLX_SAMPLE_BUFFERS, tmp, 0) != 0);
res.setNumSamples (glXGetFBConfig(display, fbcfg, GLX.GLX_SAMPLES, tmp, 0));
}
+
+ res.setBackgroundOpaque( (null == visualInfo ) ? true : !GLXFBConfigHasAlphaMask(display, fbcfg, visualInfo.getVisual()) );
+ /***
res.setBackgroundOpaque(glXGetFBConfig(display, fbcfg, GLX.GLX_TRANSPARENT_TYPE, tmp, 0) == GLX.GLX_NONE);
if(!res.isBackgroundOpaque()) {
glXGetFBConfig(display, fbcfg, GLX.GLX_TRANSPARENT_RED_VALUE, tmp, 0);
@@ -311,7 +322,7 @@ public class X11GLXGraphicsConfiguration extends X11GraphicsConfiguration implem
glXGetFBConfig(display, fbcfg, GLX.GLX_TRANSPARENT_ALPHA_VALUE, tmp, 0);
res.setTransparentAlphaValue(tmp[0]==GLX.GLX_DONT_CARE?-1:tmp[0]);
- }
+ } */
try {
res.setPbufferFloatingPointBuffers(glXGetFBConfig(display, fbcfg, GLXExt.GLX_FLOAT_COMPONENTS_NV, tmp, 0) != GL.GL_FALSE);
} catch (Exception e) {}