Give backends general names

Towards making them opaque and exposing them to the user to decouple the core
library from backends.

The general names mean that it won't be possible to build multiple backends for
one platform into the same binary, but that seems reasonable for now, and it
will make things simpler without needing to add a bunch of dispatch code.  That
will still be possible if it's ever needed, though.

1 files changed, 33 insertions, 0 deletions

diff --git a/pugl/pugl_gl_backend.h b/pugl/pugl_gl_backend.h
new file mode 100644
index 0000000..11f4e4b
--- /dev/null
+++ b/pugl/pugl_gl_backend.h
@@ -0,0 +1,33 @@
+/*
+  Copyright 2012-2019 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef PUGL_GL_BACKEND_H
+#define PUGL_GL_BACKEND_H
+
+#include "pugl/pugl_internal_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+PUGL_API const PuglBackend*
+puglGlBackend(void);
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif // PUGL_GL_BACKEND_H