glx: Implement the libglvnd interface.

With reference to the libglvnd branch:

https://cgit.freedesktop.org/mesa/mesa/log/?h=libglvnd

This is a squashed commit containing all of Kyle's commits, all but two
of Emil's commits (to follow), and a small fixup from myself to mark the
rest of the glX* functions as _GLX_PUBLIC so they are not exported when
building for libglvnd. I (ajax) squashed them together both for ease of
review, and because most of the changes are un-useful intermediate
states representing the evolution of glvnd's internal API.

Co-author: Emil Velikov <[email protected]>
Reviewed-by: Adam Jackson <[email protected]>

1 files changed, 70 insertions, 0 deletions

diff --git a/src/glx/glxglvnddispatchfuncs.h b/src/glx/glxglvnddispatchfuncs.h
new file mode 100644
index 00000000000..d9362ff81b4
--- /dev/null
+++ b/src/glx/glxglvnddispatchfuncs.h
@@ -0,0 +1,70 @@
+#ifndef __glx_glvnd_dispatch_funcs_h__
+#define __glx_glvnd_dispatch_funcs_h__
+/*
+ * Helper functions used by g_glxglvnddispatchfuncs.c.
+ */
+#include "glvnd/libglxabi.h"
+#include "glxglvnd.h"
+
+#define __VND __glXGLVNDAPIExports
+
+static inline int AddFBConfigMapping(Display *dpy, GLXFBConfig config,
+                                     __GLXvendorInfo *vendor)
+{
+    return __VND->addVendorFBConfigMapping(dpy, config, vendor);
+}
+
+static inline int AddFBConfigsMapping(Display *dpy, const GLXFBConfig *ret,
+                                      int *nelements, __GLXvendorInfo *vendor)
+{
+    int i, r;
+
+    if (!nelements || !ret)
+        return 0;
+
+    for (i = 0; i < *nelements; i++) {
+        r = __VND->addVendorFBConfigMapping(dpy, ret[i], vendor);
+        if (r) {
+            for (; i >= 0; i--)
+                __VND->removeVendorFBConfigMapping(dpy, ret[i]);
+            break;
+        }
+    }
+    return r;
+}
+
+static inline int AddDrawableMapping(Display *dpy, GLXDrawable drawable,
+                                     __GLXvendorInfo *vendor)
+{
+    return __VND->addVendorDrawableMapping(dpy, drawable, vendor);
+}
+
+static inline int AddContextMapping(Display *dpy, GLXContext ctx,
+                                    __GLXvendorInfo *vendor)
+{
+    return __VND->addVendorContextMapping(dpy, ctx, vendor);
+}
+
+static inline __GLXvendorInfo *GetDispatchFromDrawable(Display *dpy,
+                                                       GLXDrawable drawable)
+{
+    return __VND->vendorFromDrawable(dpy, drawable);
+}
+
+static inline __GLXvendorInfo *GetDispatchFromContext(GLXContext ctx)
+{
+    return __VND->vendorFromContext(ctx);
+}
+
+static inline __GLXvendorInfo *GetDispatchFromFBConfig(Display *dpy, GLXFBConfig config)
+{
+    return __VND->vendorFromFBConfig(dpy, config);
+}
+
+static inline __GLXvendorInfo *GetDispatchFromVisual(Display *dpy,
+                                                     const XVisualInfo *visual)
+{
+    return __VND->getDynDispatch(dpy, visual->screen);
+}
+
+#endif // __glx_glvnd_dispatch_funcs_h__