Graphics.OpenGLES.Buffer

Buffer

Constructing Mutable Buffers

data Buffer a

type GLArray a = Vector a

class Storable (Element a) => MakeArray a where

Associated Types

type Element a :: *

Methods

makeAref :: a -> GL (Either (GLArray (Element a)) Int)

makeWriter :: a -> (Ptr (Element a) -> GL (), Int)

Instances

Storable a => MakeArray [a]

Storable a => MakeArray (GLArray a)

glLoad :: forall a. MakeArray a => BufferUsage -> a -> GL (Buffer (Element a))

Create and initialize a Buffer storage on GPU working memory.

• Int → O(1) New Buffer with specified number of elements initialized to zeros.
• ([a], Int) → O(n) New Buffer made of given list upto n th element.
• [a] → O(n) New Buffer made of given list. Same as (xs, length xs)
• ByteString → head O(1) otherwise O(n) New Buffer from ByteString. Might be copied when necessary.
• GLArray → Unsafe O(1) Use passed StorableArray as client-side Buffer.

glLoad app2gl (10::Int) :: GL (Buffer Vec4)
glLoad app2gl ([V2 1 1],4::Int) :: GL (Buffer Vec2)
glLoad app2gl uv :: GL (Buffer (V2 Word8))
glLoad app2gl bs :: GL (Buffer Float)
glLoad app2gl (model :: GLArray Model) :: GL (Buffer Model)

glReload

Arguments

:: MakeArray a

=> Buffer (Element a)

-> Int

offset index

-> a

values

-> GL ()

glRead

Arguments

:: Storable a

=> Buffer a

-> Int

offset index

-> Int

length

-> GL (GLArray a)

glModify

Arguments

:: Storable a

=> Buffer a

-> Int

offset index

-> Int

length

-> (Vector a -> GL ())

XXX

-> GL ()

glMap

Arguments

:: Storable a

=> (a -> GL a)

-> Buffer a

-> Int

offset index

-> Int

length

-> GL ()

Updating Mutable Buffers

unsafeWithLen :: forall a b. Storable a => GLArray a -> (Int -> Ptr a -> IO b) -> IO b

data BufferUsage

app2gl :: BufferUsage

STATIC_DRAW (Default)

app2glDyn :: BufferUsage

DYNAMIC_DRAW

app2glStream :: BufferUsage

STREAM_DRAW

gl2app :: BufferUsage

STATIC_READ

gl2appDyn :: BufferUsage

DYNAMIC_READ

gl2appStream :: BufferUsage

STREAM_READ

gl2gl :: BufferUsage

STATIC_COPY

gl2glDyn :: BufferUsage

DYNAMIC_COPY

gl2glStream :: BufferUsage

STREAM_COPY

Raw Buffer Operations

bindBuffer :: BufferSlot -> Buffer a -> GL ()

bindBufferRange :: BufferSlot -> GLuint -> Buffer a -> Int -> Int -> GL ()

bindBufferBase :: BufferSlot -> GLuint -> Buffer a -> GL ()

bufferData :: BufferSlot -> BufferUsage -> Int -> Ptr a -> GL ()

bufferSubData :: BufferSlot -> Int -> Int -> Ptr a -> GL ()

3+ | GL_OES_mapbuffer glUnmapBufferOES

unmapBuffer :: BufferSlot -> GL Bool

GL_OES_mapbuffer (*GL_APIENTRY glMapBufferOES (GLenum target, GLenum access); define GL_WRITE_ONLY_OES 0x88B9 | 3+ | GL_EXT_map_buffer_range glMapBufferRangeEXT glFlushMappedBufferRangeEXT

mapBufferRange :: BufferSlot -> Int -> Int -> GLbitfield -> GL (Ptr a)

flashMappedBufferRange :: BufferSlot -> Int -> Int -> GL ()

map_read_bit :: GLbitfield

map_write_bit :: GLbitfield

map_invalidate_range_bit :: GLbitfield

map_invalidate_buffer_bit :: GLbitfield

map_flush_explicit_bit :: GLbitfield

map_unsynchronized_bit :: GLbitfield

3+ | GL_NV_copy_buffer glCopyBufferSubDataNV

copyBufferSubData :: BufferSlot -> BufferSlot -> Int -> Int -> Int -> GL ()

data BufferSlot

array_buffer :: BufferSlot

element_array_buffer :: BufferSlot

ES 3+

pixel_pack_buffer :: BufferSlot

pixel_unpack_buffer :: BufferSlot

uniform_buffer :: BufferSlot

transform_feedback_buffer :: BufferSlot

3+ or GL_NV_copy_buffer

copy_read_buffer :: BufferSlot

copy_write_buffer :: BufferSlot