GPipe-Core-0.2.3.0: Typesafe functional GPU graphics programming
Safe HaskellNone
LanguageHaskell2010

Graphics.GPipe.Internal.Buffer

Synopsis

Documentation

class BufferFormat f where Source #

The class that constraints which types can live in a buffer.

Minimal complete definition

toBuffer

Associated Types

type HostFormat f Source #

The type a value of this format has when it lives on the host (i.e. normal Haskell world)

Methods

toBuffer :: ToBuffer (HostFormat f) f Source #

An arrow action that turns a value from it's host representation to it's buffer representation. Use toBuffer from the GPipe provided instances to operate in this arrow. Also note that this arrow needs to be able to return a value lazily, so ensure you use

proc ~pattern -> do ...

getGlType :: f -> GLenum Source #

peekPixel :: f -> Ptr () -> IO (HostFormat f) Source #

getGlPaddedFormat :: f -> GLenum Source #

Instances

Instances details
BufferFormat () Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat () Source #

BufferFormat a => BufferFormat (Plucker a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (Plucker a) Source #

BufferFormat a => BufferFormat (Quaternion a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (Quaternion a) Source #

BufferFormat a => BufferFormat (V0 a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (V0 a) Source #

BufferFormat a => BufferFormat (V4 a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (V4 a) Source #

BufferFormat a => BufferFormat (V3 a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (V3 a) Source #

BufferFormat a => BufferFormat (V2 a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (V2 a) Source #

BufferFormat a => BufferFormat (V1 a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (V1 a) Source #

BufferFormat (BPacked Word8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (BPacked Word8) Source #

BufferFormat (BPacked Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (BPacked Word16) Source #

BufferFormat a => BufferFormat (Normalized a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (Normalized a) Source #

BufferFormat a => BufferFormat (Uniform a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (Uniform a) Source #

BufferFormat (B4 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Float) Source #

BufferFormat (B4 Int8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Int8) Source #

BufferFormat (B4 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Int16) Source #

BufferFormat (B4 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Int32) Source #

BufferFormat (B4 Word8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Word8) Source #

BufferFormat (B4 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Word16) Source #

BufferFormat (B4 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Word32) Source #

BufferFormat (B3 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Float) Source #

BufferFormat (B3 Int8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Int8) Source #

BufferFormat (B3 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Int16) Source #

BufferFormat (B3 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Int32) Source #

BufferFormat (B3 Word8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Word8) Source #

BufferFormat (B3 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Word16) Source #

BufferFormat (B3 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Word32) Source #

BufferFormat (B2 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B2 Float) Source #

BufferFormat (B2 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B2 Int16) Source #

BufferFormat (B2 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B2 Int32) Source #

BufferFormat (B2 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B2 Word16) Source #

BufferFormat (B2 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B2 Word32) Source #

BufferFormat (B Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B Float) Source #

BufferFormat (B Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B Int32) Source #

BufferFormat (B Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B Word32) Source #

(BufferFormat a, BufferFormat b) => BufferFormat (a, b) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (a, b) Source #

Methods

toBuffer :: ToBuffer (HostFormat (a, b)) (a, b) Source #

getGlType :: (a, b) -> GLenum Source #

peekPixel :: (a, b) -> Ptr () -> IO (HostFormat (a, b)) Source #

getGlPaddedFormat :: (a, b) -> GLenum Source #

(BufferFormat (f a), BufferFormat a, HostFormat (f a) ~ f (HostFormat a)) => BufferFormat (Point f a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (Point f a) Source #

(BufferFormat a, BufferFormat b, BufferFormat c) => BufferFormat (a, b, c) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (a, b, c) Source #

Methods

toBuffer :: ToBuffer (HostFormat (a, b, c)) (a, b, c) Source #

getGlType :: (a, b, c) -> GLenum Source #

peekPixel :: (a, b, c) -> Ptr () -> IO (HostFormat (a, b, c)) Source #

getGlPaddedFormat :: (a, b, c) -> GLenum Source #

(BufferFormat a, BufferFormat b, BufferFormat c, BufferFormat d) => BufferFormat (a, b, c, d) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (a, b, c, d) Source #

Methods

toBuffer :: ToBuffer (HostFormat (a, b, c, d)) (a, b, c, d) Source #

getGlType :: (a, b, c, d) -> GLenum Source #

peekPixel :: (a, b, c, d) -> Ptr () -> IO (HostFormat (a, b, c, d)) Source #

getGlPaddedFormat :: (a, b, c, d) -> GLenum Source #

(BufferFormat a, BufferFormat b, BufferFormat c, BufferFormat d, BufferFormat e) => BufferFormat (a, b, c, d, e) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (a, b, c, d, e) Source #

Methods

toBuffer :: ToBuffer (HostFormat (a, b, c, d, e)) (a, b, c, d, e) Source #

getGlType :: (a, b, c, d, e) -> GLenum Source #

peekPixel :: (a, b, c, d, e) -> Ptr () -> IO (HostFormat (a, b, c, d, e)) Source #

getGlPaddedFormat :: (a, b, c, d, e) -> GLenum Source #

(BufferFormat a, BufferFormat b, BufferFormat c, BufferFormat d, BufferFormat e, BufferFormat f) => BufferFormat (a, b, c, d, e, f) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (a, b, c, d, e, f) Source #

Methods

toBuffer :: ToBuffer (HostFormat (a, b, c, d, e, f)) (a, b, c, d, e, f) Source #

getGlType :: (a, b, c, d, e, f) -> GLenum Source #

peekPixel :: (a, b, c, d, e, f) -> Ptr () -> IO (HostFormat (a, b, c, d, e, f)) Source #

getGlPaddedFormat :: (a, b, c, d, e, f) -> GLenum Source #

(BufferFormat a, BufferFormat b, BufferFormat c, BufferFormat d, BufferFormat e, BufferFormat f, BufferFormat g) => BufferFormat (a, b, c, d, e, f, g) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (a, b, c, d, e, f, g) Source #

Methods

toBuffer :: ToBuffer (HostFormat (a, b, c, d, e, f, g)) (a, b, c, d, e, f, g) Source #

getGlType :: (a, b, c, d, e, f, g) -> GLenum Source #

peekPixel :: (a, b, c, d, e, f, g) -> Ptr () -> IO (HostFormat (a, b, c, d, e, f, g)) Source #

getGlPaddedFormat :: (a, b, c, d, e, f, g) -> GLenum Source #

type family BufferColor c h where ... Source #

This type family restricts what host and buffer types a texture format may be converted into. 'BufferColor t h' for a texture representation t and a host representation h will evaluate to a buffer type used in the transfer. This family is closed, i.e. you cannot create additional instances to it.

Equations

BufferColor Float Int32 = Normalized (B Int32) 
BufferColor Float Word32 = Normalized (B Word32) 
BufferColor Float Float = B Float 
BufferColor Int Int32 = B Int32 
BufferColor Word Word32 = B Word32 
BufferColor Word Word16 = BPacked Word16 
BufferColor Word Word8 = BPacked Word8 
BufferColor (V2 Float) (V2 Int32) = Normalized (B2 Int32) 
BufferColor (V2 Float) (V2 Int16) = Normalized (B2 Int16) 
BufferColor (V2 Float) (V2 Word32) = Normalized (B2 Word32) 
BufferColor (V2 Float) (V2 Word16) = Normalized (B2 Word16) 
BufferColor (V2 Float) (V2 Float) = B2 Float 
BufferColor (V2 Int) (V2 Int32) = B2 Int32 
BufferColor (V2 Int) (V2 Int16) = B2 Int16 
BufferColor (V2 Word) (V2 Word32) = B2 Word32 
BufferColor (V2 Word) (V2 Word16) = B2 Word16 
BufferColor (V3 Float) (V3 Int32) = Normalized (B3 Int32) 
BufferColor (V3 Float) (V3 Int16) = Normalized (B3 Int16) 
BufferColor (V3 Float) (V3 Int8) = Normalized (B3 Int8) 
BufferColor (V3 Float) (V3 Word32) = Normalized (B3 Word32) 
BufferColor (V3 Float) (V3 Word16) = Normalized (B3 Word16) 
BufferColor (V3 Float) (V3 Word8) = Normalized (B3 Word8) 
BufferColor (V3 Float) (V3 Float) = B3 Float 
BufferColor (V3 Int) (V3 Int32) = B3 Int32 
BufferColor (V3 Int) (V3 Int16) = B3 Int16 
BufferColor (V3 Int) (V3 Int8) = B3 Int8 
BufferColor (V3 Word) (V3 Word32) = B3 Word32 
BufferColor (V3 Word) (V3 Word16) = B3 Word16 
BufferColor (V3 Word) (V3 Word8) = B3 Word8 
BufferColor (V4 Float) (V4 Int32) = Normalized (B4 Int32) 
BufferColor (V4 Float) (V4 Int16) = Normalized (B4 Int16) 
BufferColor (V4 Float) (V4 Int8) = Normalized (B4 Int8) 
BufferColor (V4 Float) (V4 Word32) = Normalized (B4 Word32) 
BufferColor (V4 Float) (V4 Word16) = Normalized (B4 Word16) 
BufferColor (V4 Float) (V4 Word8) = Normalized (B4 Word8) 
BufferColor (V4 Float) (V4 Float) = B4 Float 
BufferColor (V4 Int) (V4 Int32) = B4 Int32 
BufferColor (V4 Int) (V4 Int16) = B4 Int16 
BufferColor (V4 Int) (V4 Int8) = B4 Int8 
BufferColor (V4 Word) (V4 Word32) = B4 Word32 
BufferColor (V4 Word) (V4 Word16) = B4 Word16 
BufferColor (V4 Word) (V4 Word8) = B4 Word8 

data Buffer os b Source #

A Buffer os b lives in the object space os and contains elements of type b.

Instances

Instances details
Eq (Buffer os b) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Methods

(==) :: Buffer os b -> Buffer os b -> Bool #

(/=) :: Buffer os b -> Buffer os b -> Bool #

data ToBuffer a b Source #

The arrow type for toBuffer.

Constructors

ToBuffer !(Kleisli (StateT Offset (WriterT [Int] (Reader (UniformAlignment, AlignmentMode)))) a b) !(Kleisli (StateT Offset (Reader (BufferName, Stride, BInput))) a b) !(Kleisli (StateT (Ptr (), [Int]) IO) a b) !AlignmentMode 

Instances

Instances details
Arrow ToBuffer Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Methods

arr :: (b -> c) -> ToBuffer b c #

first :: ToBuffer b c -> ToBuffer (b, d) (c, d) #

second :: ToBuffer b c -> ToBuffer (d, b) (d, c) #

(***) :: ToBuffer b c -> ToBuffer b' c' -> ToBuffer (b, b') (c, c') #

(&&&) :: ToBuffer b c -> ToBuffer b c' -> ToBuffer b (c, c') #

Category ToBuffer Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Methods

id :: forall (a :: k). ToBuffer a a #

(.) :: forall (b :: k) (c :: k) (a :: k). ToBuffer b c -> ToBuffer a b -> ToBuffer a c #

data B a Source #

The atomic buffer value that represents a host value of type a.

Constructors

B 

Instances

Instances details
BufferFormat (B Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B Float) Source #

BufferFormat (B Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B Int32) Source #

BufferFormat (B Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B Word32) Source #

UniformInput (B Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

Associated Types

type UniformFormat (B Float) x Source #

UniformInput (B Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

Associated Types

type UniformFormat (B Int32) x Source #

UniformInput (B Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

Associated Types

type UniformFormat (B Word32) x Source #

VertexInput (Normalized (B Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B Int32)) Source #

VertexInput (Normalized (B Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B Word32)) Source #

VertexInput (B Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B Float) Source #

VertexInput (B Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B Int32) Source #

VertexInput (B Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B Word32) Source #

type HostFormat (B Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type VertexFormat (Normalized (B Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type UniformFormat (B Float) x Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

type UniformFormat (B Float) x = S x Float
type UniformFormat (B Int32) x Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

type UniformFormat (B Int32) x = S x Int
type UniformFormat (B Word32) x Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

type UniformFormat (B Word32) x = S x Word

newtype B2 a Source #

An atomic buffer value that represents a vector of 2 as on the host.

Constructors

B2 

Fields

Instances

Instances details
BufferFormat (B2 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B2 Float) Source #

BufferFormat (B2 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B2 Int16) Source #

BufferFormat (B2 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B2 Int32) Source #

BufferFormat (B2 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B2 Word16) Source #

BufferFormat (B2 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B2 Word32) Source #

UniformInput (B2 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

Associated Types

type UniformFormat (B2 Float) x Source #

UniformInput (B2 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

Associated Types

type UniformFormat (B2 Int32) x Source #

UniformInput (B2 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

Associated Types

type UniformFormat (B2 Word32) x Source #

VertexInput (Normalized (B2 Int16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B2 Int16)) Source #

VertexInput (Normalized (B2 Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B2 Int32)) Source #

VertexInput (Normalized (B2 Word16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B2 Word16)) Source #

VertexInput (Normalized (B2 Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B2 Word32)) Source #

VertexInput (B2 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B2 Float) Source #

VertexInput (B2 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B2 Int16) Source #

VertexInput (B2 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B2 Int32) Source #

VertexInput (B2 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B2 Word16) Source #

VertexInput (B2 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B2 Word32) Source #

type HostFormat (B2 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B2 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B2 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B2 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B2 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type VertexFormat (Normalized (B2 Int16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B2 Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B2 Word16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B2 Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B2 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B2 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B2 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B2 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B2 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type UniformFormat (B2 Float) x Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

type UniformFormat (B2 Float) x = V2 (S x Float)
type UniformFormat (B2 Int32) x Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

type UniformFormat (B2 Int32) x = V2 (S x Int)
type UniformFormat (B2 Word32) x Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

type UniformFormat (B2 Word32) x = V2 (S x Word)

newtype B3 a Source #

An atomic buffer value that represents a vector of 3 as on the host.

Constructors

B3 

Fields

Instances

Instances details
BufferFormat (B3 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Float) Source #

BufferFormat (B3 Int8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Int8) Source #

BufferFormat (B3 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Int16) Source #

BufferFormat (B3 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Int32) Source #

BufferFormat (B3 Word8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Word8) Source #

BufferFormat (B3 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Word16) Source #

BufferFormat (B3 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B3 Word32) Source #

UniformInput (B3 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

Associated Types

type UniformFormat (B3 Float) x Source #

UniformInput (B3 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

Associated Types

type UniformFormat (B3 Int32) x Source #

UniformInput (B3 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

Associated Types

type UniformFormat (B3 Word32) x Source #

VertexInput (Normalized (B3 Int8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B3 Int8)) Source #

VertexInput (Normalized (B3 Int16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B3 Int16)) Source #

VertexInput (Normalized (B3 Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B3 Int32)) Source #

VertexInput (Normalized (B3 Word8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B3 Word8)) Source #

VertexInput (Normalized (B3 Word16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B3 Word16)) Source #

VertexInput (Normalized (B3 Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B3 Word32)) Source #

VertexInput (B3 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B3 Float) Source #

VertexInput (B3 Int8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B3 Int8) Source #

VertexInput (B3 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B3 Int16) Source #

VertexInput (B3 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B3 Int32) Source #

VertexInput (B3 Word8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B3 Word8) Source #

VertexInput (B3 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B3 Word16) Source #

VertexInput (B3 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B3 Word32) Source #

type HostFormat (B3 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B3 Int8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B3 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B3 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B3 Word8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B3 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B3 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type VertexFormat (Normalized (B3 Int8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B3 Int16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B3 Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B3 Word8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B3 Word16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B3 Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B3 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B3 Int8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B3 Int16) Source # 
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Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B3 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B3 Word8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B3 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B3 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type UniformFormat (B3 Float) x Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

type UniformFormat (B3 Float) x = V3 (S x Float)
type UniformFormat (B3 Int32) x Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

type UniformFormat (B3 Int32) x = V3 (S x Int)
type UniformFormat (B3 Word32) x Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

type UniformFormat (B3 Word32) x = V3 (S x Word)

newtype B4 a Source #

An atomic buffer value that represents a vector of 4 as on the host. This works similar to '(B a, B a, B a, B a)' but has some performance advantage, especially when used in VertexArrays.

Constructors

B4 

Fields

Instances

Instances details
BufferFormat (B4 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Float) Source #

BufferFormat (B4 Int8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Int8) Source #

BufferFormat (B4 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Int16) Source #

BufferFormat (B4 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Int32) Source #

BufferFormat (B4 Word8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Word8) Source #

BufferFormat (B4 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Word16) Source #

BufferFormat (B4 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (B4 Word32) Source #

UniformInput (B4 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

Associated Types

type UniformFormat (B4 Float) x Source #

UniformInput (B4 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

Associated Types

type UniformFormat (B4 Int32) x Source #

UniformInput (B4 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

Associated Types

type UniformFormat (B4 Word32) x Source #

VertexInput (Normalized (B4 Int8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B4 Int8)) Source #

VertexInput (Normalized (B4 Int16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B4 Int16)) Source #

VertexInput (Normalized (B4 Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B4 Int32)) Source #

VertexInput (Normalized (B4 Word8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B4 Word8)) Source #

VertexInput (Normalized (B4 Word16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B4 Word16)) Source #

VertexInput (Normalized (B4 Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B4 Word32)) Source #

VertexInput (B4 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B4 Float) Source #

VertexInput (B4 Int8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B4 Int8) Source #

VertexInput (B4 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B4 Int16) Source #

VertexInput (B4 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B4 Int32) Source #

VertexInput (B4 Word8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B4 Word8) Source #

VertexInput (B4 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B4 Word16) Source #

VertexInput (B4 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (B4 Word32) Source #

type HostFormat (B4 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B4 Int8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B4 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B4 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B4 Word8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B4 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type HostFormat (B4 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type VertexFormat (Normalized (B4 Int8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B4 Int16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B4 Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B4 Word8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B4 Word16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B4 Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B4 Float) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B4 Int8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B4 Int16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B4 Int32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B4 Word8) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B4 Word16) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (B4 Word32) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type UniformFormat (B4 Float) x Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

type UniformFormat (B4 Float) x = V4 (S x Float)
type UniformFormat (B4 Int32) x Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

type UniformFormat (B4 Int32) x = V4 (S x Int)
type UniformFormat (B4 Word32) x Source # 
Instance details

Defined in Graphics.GPipe.Internal.Uniform

type UniformFormat (B4 Word32) x = V4 (S x Word)

toB22 :: forall a. (Storable a, BufferFormat (B2 a)) => B4 a -> (B2 a, B2 a) Source #

Split up a B4 a into two B2 as.

toB3 :: forall a. (Storable a, BufferFormat (B3 a)) => B4 a -> B3 a Source #

Discard the last component of a B4 a to get a B3 a.

toB21 :: forall a. (Storable a, BufferFormat (B a)) => B3 a -> (B2 a, B a) Source #

Split up a B3 a into a B2 a and a B1 a.

toB12 :: forall a. (Storable a, BufferFormat (B a)) => B3 a -> (B a, B2 a) Source #

Split up a B3 a into a B1 a and a B2 a.

toB11 :: forall a. (Storable a, BufferFormat (B a)) => B2 a -> (B a, B a) Source #

Split up a B2 a into two B1 as.

newtype Uniform a Source #

Any buffer value that is going to be used as a uniform needs to be wrapped in this newtype. This will cause is to be aligned properly for uniform usage. It can still be used as input for vertex arrays, but due to the uniform alignment it will probably be padded quite heavily and thus wasteful.

Constructors

Uniform a 

Instances

Instances details
BufferFormat a => BufferFormat (Uniform a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (Uniform a) Source #

type HostFormat (Uniform a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

newtype Normalized a Source #

This wrapper is used for integer values to indicate that it should be interpreted as a floating point value, in the range [-1,1] or [0,1] depending on wether it is a signed or unsigned integer (i.e. Int or Word).

Constructors

Normalized a 

Instances

Instances details
BufferFormat a => BufferFormat (Normalized a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

Associated Types

type HostFormat (Normalized a) Source #

VertexInput (Normalized (B4 Int8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B4 Int8)) Source #

VertexInput (Normalized (B4 Int16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B4 Int16)) Source #

VertexInput (Normalized (B4 Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B4 Int32)) Source #

VertexInput (Normalized (B4 Word8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B4 Word8)) Source #

VertexInput (Normalized (B4 Word16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B4 Word16)) Source #

VertexInput (Normalized (B4 Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B4 Word32)) Source #

VertexInput (Normalized (B3 Int8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B3 Int8)) Source #

VertexInput (Normalized (B3 Int16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B3 Int16)) Source #

VertexInput (Normalized (B3 Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B3 Int32)) Source #

VertexInput (Normalized (B3 Word8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B3 Word8)) Source #

VertexInput (Normalized (B3 Word16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B3 Word16)) Source #

VertexInput (Normalized (B3 Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B3 Word32)) Source #

VertexInput (Normalized (B2 Int16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B2 Int16)) Source #

VertexInput (Normalized (B2 Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B2 Int32)) Source #

VertexInput (Normalized (B2 Word16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B2 Word16)) Source #

VertexInput (Normalized (B2 Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B2 Word32)) Source #

VertexInput (Normalized (B Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B Int32)) Source #

VertexInput (Normalized (B Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

Associated Types

type VertexFormat (Normalized (B Word32)) Source #

type HostFormat (Normalized a) Source # 
Instance details

Defined in Graphics.GPipe.Internal.Buffer

type VertexFormat (Normalized (B4 Int8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B4 Int16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B4 Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B4 Word8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B4 Word16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B4 Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B3 Int8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B3 Int16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B3 Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B3 Word8)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B3 Word16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B3 Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B2 Int16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B2 Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B2 Word16)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B2 Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B Int32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

type VertexFormat (Normalized (B Word32)) Source # 
Instance details

Defined in Graphics.GPipe.Internal.PrimitiveStream

data BPacked a Source #

This works like a 'B a', but has an alignment smaller than 4 bytes that is the limit for vertex buffers, and thus cannot be used for those. Index buffers on the other hand need to be tightly packed, so you need to use this type for index buffers of Word8 or Word16.

data BInput Source #

Constructors

BInput 

newBuffer :: (MonadIO m, BufferFormat b, ContextHandler ctx) => Int -> ContextT ctx os m (Buffer os b) Source #

Create a buffer with a specified number of elements.

writeBuffer :: (ContextHandler ctx, MonadIO m) => Buffer os b -> BufferStartPos -> [HostFormat b] -> ContextT ctx os m () Source #

Write a buffer from the host (i.e. the normal Haskell world).

copyBuffer :: (ContextHandler ctx, MonadIO m) => Buffer os b -> BufferStartPos -> Buffer os b -> BufferStartPos -> Int -> ContextT ctx os m () Source #

Copies values from one buffer to another (of the same type).

copyBuffer fromBuffer fromStart toBuffer toStart length will copy length elements from position fromStart in fromBuffer to position toStart in toBuffer.

bufSize :: forall os b. Buffer os b -> Int Source #

bufName :: Buffer os b -> BufferName Source #

bufferLength :: Buffer os b -> Int Source #

Retrieve the number of elements in a buffer.

bufBElement :: Buffer os b -> BInput -> b Source #

bufferWriteInternal :: Buffer os f -> Ptr () -> [HostFormat f] -> IO (Ptr ()) Source #

makeBuffer :: forall os b. BufferFormat b => BufferName -> Int -> UniformAlignment -> Buffer os b Source #