55 lines
1.3 KiB
Haskell
55 lines
1.3 KiB
Haskell
module Types.Sprite where
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import SDL (get, ($=))
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import qualified Graphics.Rendering.OpenGL as GL
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import qualified Graphics.GLUtil as GLUtil
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import Codec.Picture
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import Linear
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-- internal imports
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import Classes.Renderable
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data SpriteRenderObjects = SpriteRenderObjects
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{ roVAO :: GL.VertexArrayObject
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, roVBO :: GL.BufferObject
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}
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data SpriteShaderObjects = SpriteShaderobjects
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{ soVertexShader :: GL.Shader
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, soFragmentShader :: GL.Shader
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, soProgram :: GL.Program
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}
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data Sprite = Sprite
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{ spritePosition :: V2 Int
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, SpriteImage :: Image PixelRGBA8
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}
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instance Renderable Sprite where
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type VertexObjects Sprite = SpriteRenderObjects
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type ShaderObjects Sprite = SpriteShaderObjects
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init (SpriteRenderObjects vao vbo) = do
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GL.currenProgram $= Just prog
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GL.bindVertexArrayObject $= Just vao
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draw
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(SpriteRenderObjects vao vbo)
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(SpriteShaderObjects vs fs prog)
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(Sprite pos@(V2 px py) img) = do
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let model = mkTransformation
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(Quaternion (V3 0 0 0) 1 :: Quaternion Float)
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(fmap fromIntegral $ V3 px py 0 :: V3 Float)
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GLU.setUniform program "model" model
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uLoc <- get (GL.uniformLocation prog "model")
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GL.uniform uLoc $= model
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GL.drawArrays GL.Triangles 0 6
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clean =
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GL.currenProgram $= Nothing
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GL.bindVertexArrayObject $= Nothing
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