----------------------------------------------------------------------------- -- -- Module : Graphics.GPipe.Stream.Primitive -- Copyright : Tobias Bexelius -- License : BSD3 -- -- Maintainer : Tobias Bexelius -- Stability : Experimental -- Portability : Portable -- -- | 'PrimitiveStream's implement the 'Functor' class, which provides the -- 'fmap' method that you can use to manipulate those streams. This corresponds to writing and using -- vertex shaders, but in a much more modular way. You may for instance apply 'fmap' -- several times in a sequence, effectively creating complex shaders. -- -- Instances are also provided for the 'Monoid' class, so several streams (of the same type) can be -- concatenated. The order is preserved, meaning that the primitives in stream @a@ in @a `mappend` b@ will be -- drawn before the primitives in @b@. -- -- All atomic values except textures in vertex streams uses the 'Vertex' type constructor. -- Composite types are created by composing the atomic 'Vertex' types, rather than wrapping the -- composite type in the 'Vertex' type constructors. -- -- 'Vertex' instances for are provided for most of Prelude's numerical classes. Since 'Eq', 'Ord' -- and 'Show' are prerequisites for these classes, instances are provided for them too, even though -- their methods all will generate errors if used (except 'min' and 'max'). Use the instances of -- 'EqB', 'OrdB' and 'IfB' from the Boolean package if you want to compare 'Vertex' values. -- Hyperbolic trigonometrical functions aren't provided either. -- -- Rewrite rule specializations are provided for the Vec package functions 'norm', 'normalize', -- 'dot' and 'cross' on vectors of 'Vertex' 'Float', so the use of these functions (and others -- from that package that is defined in terms of them) are highly encouraged. ----------------------------------------------------------------------------- module Graphics.GPipe.Stream.Primitive ( -- * Data types PrimitiveStream(), Vertex(), -- * Creating primitive streams VertexInput(..), InputAssembler(), Triangle(..), Line(..), Point(..), Primitive(), toGPUStream, toIndexedGPUStream, ) where import Shader import GPUStream import InputAssembler