Graphics.VinylGL.Vertex

Utilities for working with vertex buffer objects (VBOs) filled with vertices represented as vinyl records.

Documentation

bufferVertices :: (Storable (FieldRec rs), BufferSource (v (FieldRec rs))) => v (FieldRec rs) -> IO (BufferedVertices rs)

Load vertex data into a GPU-accessible buffer.

bindVertices :: BufferedVertices a -> IO ()

Bind previously-buffered vertex data.

reloadVertices :: Storable (FieldRec rs) => BufferedVertices rs -> Vector (FieldRec rs) -> IO ()

Reload BufferedVertices with a Vector of new vertex data.

deleteVertices :: BufferedVertices a -> IO ()

Delete the object name associated with BufferedVertices.

enableVertices :: forall f rs. ViableVertex (FieldRec rs) => ShaderProgram -> f rs -> IO (Maybe String)

Line up a shader's attribute inputs with a vertex record. This maps vertex fields to GLSL attributes on the basis of record field names on the Haskell side, and variable names on the GLSL side.

enableVertices' :: forall f rs. ViableVertex (FieldRec rs) => ShaderProgram -> f rs -> IO ()

Behaves like enableVertices, but raises an exception if the supplied vertex record does not include a field required by the shader.

enableVertexFields :: forall p rs. ViableVertex (FieldRec rs) => ShaderProgram -> p rs -> IO ()

Bind some of a shader's attribute inputs to a vertex record. This is useful when the inputs of a shader are split across multiple arrays.

type ViableVertex t = (HasFieldNames t, HasFieldSizes t, HasFieldDims t, HasFieldGLTypes t, Storable t)

Constraint alias capturing the requirements of a vertex type.

newtype BufferedVertices fields

Representation of a VBO whose type describes the vertices.

Constructors

BufferedVertices

Fields

getVertexBuffer :: BufferObject

fieldToVAD :: forall sy v a r rs field proxy is. (r ~ `((sy :: Symbol), v a)`, HasFieldNames (FieldRec rs), HasFieldSizes (FieldRec rs), HasGLType a, Storable (FieldRec rs), Num (v a), KnownSymbol sy, Foldable v, RElem r rs is) => field r -> proxy (FieldRec rs) -> VertexArrayDescriptor a

Produce a VertexArrayDescriptor for a particular field of a vertex record.