Graphics.GL.Low.BufferObject

VBO and ElementArrays. Both are buffer objects but are used for two different things.

Documentation

data VBO

A VBO is a buffer object which has vertex data. Shader programs use VBOs as input to their vertex attributes according to the configuration of the bound VAO.

Instances

Show VBO

GLObject VBO

BufferObject VBO

data ElementArray

A buffer object which has a packed sequence of vertex indices. Indexed rendering uses the ElementArray bound to the element array binding target.

Instances

Show ElementArray

GLObject ElementArray

BufferObject ElementArray

data UsageHint

Usage hint for allocation of buffer object storage.

Constructors

StaticDraw

Data will seldomly change.

DynamicDraw

Data will change.

StreamDraw

Data will change very often.

Instances

Show UsageHint

ToGL UsageHint

newVBO :: Vector Word8 -> UsageHint -> IO VBO

Create a buffer object from a blob of bytes. The usage argument hints at how often you will modify the data.

updateVBO :: Vector Word8 -> Int -> IO ()

Modify the data in the currently bound VBO starting from the specified index in bytes.

bindVBO :: VBO -> IO ()

Bind a VBO to the array buffer binding target. The buffer object bound there will be replaced, if any.

newElementArray :: Vector Word8 -> UsageHint -> IO ElementArray

Create a new ElementArray buffer object from the blob of packed indices. The usage argument hints at how often you plan to modify the data.

updateElementArray :: Vector Word8 -> Int -> IO ()

Modify contents in the currently bound ElementArray starting at the specified index in bytes.

bindElementArray :: ElementArray -> IO ()

Assign an ElementArray to the element array binding target. It will replace the ElementArray already bound there, if any. Note that the state of the element array binding target is a function of the current VAO.

deleteBufferObject :: BufferObject a => a -> IO ()

Delete a VBO or ElementArray.