From b49d590153658e77d284e0b87d3cabe65fd37730 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Wed, 9 Aug 2023 20:25:16 +0200
Subject: c++,window-opengl: Initial module commit

---
 c++/window-opengl/gl_xcb.h | 65 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 c++/window-opengl/gl_xcb.h

(limited to 'c++/window-opengl/gl_xcb.h')

diff --git a/c++/window-opengl/gl_xcb.h b/c++/window-opengl/gl_xcb.h
new file mode 100644
index 0000000..128733b
--- /dev/null
+++ b/c++/window-opengl/gl_xcb.h
@@ -0,0 +1,65 @@
+#pragma once
+
+#include <forstio/window/xcb.h>
+
+#ifndef SAW_OGL
+#error "OpenGL is not supported"
+#endif
+
+#include "gl_backends.h"
+
+#include <GL/glx.h>
+
+namespace saw {
+namespace gfx {
+
+struct glx_library_extensions {
+public:
+	std::string_view raw_extension_string;
+	GLXContext (*glXCreateContextAttribsARB)(Display*, GLXFBConfig, GLXContext, Bool, const int*) = nullptr;
+};
+
+template<>
+class gl_context<gl::backend::linux_xcb> final {
+private:
+	glx_library_extensions ext_lib_;
+	own<device<backend::linux_xcb>> device_;
+	int visual_id_;
+	GLXContext context_;
+	GLXFBConfig fb_config_;
+public:
+	gl_context(const glx_library_extensions&, own<device<backend::linux_xcb>>, int, GLXContext, GLXFBConfig);
+	~gl_context();
+
+	own<gl_window<gl::backend::linux_xcb>> create_window(const video_mode&, std::string_view);
+
+	void flush();
+};
+
+template<>
+class gl_window<gl::backend::linux_xcb> final {
+private:
+	own<window<backend::linux_xcb>> window_;
+	gl_context<gl::backend::linux_xcb>* context_;
+
+	::GLXWindow glx_window_handle_;
+
+public:
+	gl_window(own<window<backend::linux_xcb>> window, gl_context<gl::backend::linux_xcb>& ctx,
+			::GLXWindow);
+	~gl_window();
+
+	void bind();
+	void swap();
+	void show();
+	void hide();
+
+	const video_mode& get_video_mode() const;
+	const std::string_view get_title() const;
+
+	void resize(size_t height, size_t width);
+
+	conveyor<data<schema::WindowEvents>> on_event();
+};
+}
+}
-- 
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