GRAPHICS: Introduce GfxOpenGLS
GRAPHICS: Emergency font [OpenGLS]
BUILD: Choose between OpenGL and OpenGLS
GRAPHICS: Text drawing [OpenGLS]
GRAPHICS: Support Smush [OpenGLS]
GRAPHICS: Background drawing [OpenGLS]
GRAPHICS: Loading and updating of GRIM/EMI models [OpenGLS]
GRAPHICS: Drawing of actors [OpenGLS]
GRAPHICS: Screenshots and specialty textures [OpenGLS]
GRAPHICS: Add Graphics::Framebuffer
GRAPHICS: Support sprites (WIP) [OpenGLS]
ANDROID: Draw GLES2 in framebuffer
ANDROID: Bundle shaders with assets
GRAPHICS: Disable overlay rendering on GL3/ES2
GRAPHICS: Use RGBA for all textures [OpenGLS]
GRAPHICS: Use #version 130 on desktop [OpenGLS]
GRAPHICS: Add boolean flag to Shader::use
GRAPHICS: Add support for Grim primitives [OpenGLS]
GRAPHICS: Disable lighting for now [OpenGLS]
GRAPHICS: Remove duplicate EBO [OpenGLS]