renderer_opengl « video_core « src - anonymous/yuzu - yuzu is the world's most popular, open-source, Nintendo Switch emulator — started by the creators of Citra. It is written in C++ with portability in mind,

Mode	Name	Size
-rw-r--r--	gl_rasterizer.cpp	29207	log stats plain blame
-rw-r--r--	gl_rasterizer.h	5823	log stats plain blame
-rw-r--r--	gl_rasterizer_cache.cpp	61103	log stats plain blame
-rw-r--r--	gl_rasterizer_cache.h	14311	log stats plain blame
-rw-r--r--	gl_resource_manager.h	7886	log stats plain blame
-rw-r--r--	gl_shader_decompiler.cpp	24535	log stats plain blame
-rw-r--r--	gl_shader_decompiler.h	712	log stats plain blame
-rw-r--r--	gl_shader_gen.cpp	2059	log stats plain blame
-rw-r--r--	gl_shader_gen.h	3296	log stats plain blame
-rw-r--r--	gl_shader_manager.cpp	2716	log stats plain blame
-rw-r--r--	gl_shader_manager.h	6096	log stats plain blame
-rw-r--r--	gl_shader_util.cpp	1506	log stats plain blame
-rw-r--r--	gl_shader_util.h	2031	log stats plain blame
-rw-r--r--	gl_state.cpp	12822	log stats plain blame
-rw-r--r--	gl_state.h	4888	log stats plain blame
-rw-r--r--	gl_stream_buffer.cpp	4997	log stats plain blame
-rw-r--r--	gl_stream_buffer.h	940	log stats plain blame
-rw-r--r--	maxwell_to_gl.h	5699	log stats plain blame
-rw-r--r--	renderer_opengl.cpp	16389	log stats plain blame
-rw-r--r--	renderer_opengl.h	2866	log stats plain blame