1 files changed, 90 insertions, 0 deletions
diff --git a/include/pugl/gl.h b/include/pugl/gl.h
new file mode 100644
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--- /dev/null
+++ b/include/pugl/gl.h
@@ -0,0 +1,90 @@
+/*
+  Copyright 2012-2020 David Robillard <d@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.
+*/
+
+/**
+   @file gl.h
+   @brief OpenGL-specific API.
+*/
+
+#ifndef PUGL_GL_H
+#define PUGL_GL_H
+
+#include "pugl/pugl.h"
+
+// IWYU pragma: begin_exports
+
+/* Unfortunately, GL includes vary across platforms, so include them here to
+   enable pure portable programs. */
+
+#ifndef PUGL_NO_INCLUDE_GL_H
+#	ifdef __APPLE__
+#		include "OpenGL/gl.h"
+#	else
+#		ifdef _WIN32
+#			include <windows.h>
+#		endif
+#		include "GL/gl.h"
+#	endif
+#endif
+
+#ifndef PUGL_NO_INCLUDE_GLU_H
+#	ifdef __APPLE__
+#		include "OpenGL/glu.h"
+#	else
+#		ifdef _WIN32
+#			include <windows.h>
+#		endif
+#		include "GL/glu.h"
+#	endif
+#endif
+
+// IWYU pragma: end_exports
+
+PUGL_BEGIN_DECLS
+
+/**
+   @defgroup gl OpenGL
+   OpenGL graphics support.
+   @ingroup pugl_c
+   @{
+*/
+
+/**
+   OpenGL extension function.
+*/
+typedef void (*PuglGlFunc)(void);
+
+/**
+   Return the address of an OpenGL extension function.
+*/
+PUGL_API PuglGlFunc
+puglGetProcAddress(const char* name);
+
+/**
+   OpenGL graphics backend.
+
+   Pass the returned value to puglSetBackend() to draw to a view with OpenGL.
+*/
+PUGL_API PUGL_CONST_FUNC const PuglBackend*
+puglGlBackend(void);
+
+PUGL_END_DECLS
+
+/**
+   @}
+*/
+
+#endif // PUGL_GL_H