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Keeping with the theme of declarative and functional code, Sly’s rendering module provide a purely functional interface to the imperative world of OpenGL. An abstraction on top of OpenGL known as “render combinators” provide a convenient way to describe and compose rendering pipelines.
| • Render Combinators: | Purely functional rendering API. | |
| • Sprites: | 2D textured rectangles. | |
| • Textures: | Pixel arrays. | |
| • Fonts: | Font loading and text rendering. | |
| • Shapes: | Primitive 2D/3D shapes. | |
| • Cameras: | Defining a viewpoint. | |
| • Colors: | Pretty colors. | |
| • Framebuffers: | Offscreen rendering. | |
| • Shaders: | Programs that run on the GPU. |