glx: correctly mask the drawableType for GLX_ARB_fbconfig_float

The comment/spec says - only for pbuffer drawables, while the code
clears the window/pixmap bit. Practise what you preach and apply the
trivial tweak. In practise this should not cause functional change.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

diff --git a/src/glx/glxext.c b/src/glx/glxext.c
index 0c2f73f..f6bc377 100644 (file)
--- a/src/glx/glxext.c
+++ b/src/glx/glxext.c
@@ -599,7 +599,7 @@ __glXInitializeVisualConfigFromTags(struct glx_config * config, int count,
     *     GLXPbuffer drawables."
     */
    if (config->floatMode)
-      config->drawableType &= ~(GLX_WINDOW_BIT|GLX_PIXMAP_BIT);
+      config->drawableType &= GLX_PBUFFER_BIT;
 }
 
 static struct glx_config *