update-buffer ( buffer-ptr: buffer-ptr size: integer data -- )
GPU-accelerated rendering » Buffer objects

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Vocabulary
gpu.buffers

Inputs

buffer-ptr	a buffer-ptr
size	an integer
data	a c-ptr or f

Outputs
None

Word description
Replaces size bytes of data in the buffer referenced by buffer-ptr with data from data.

See also
allocate-buffer, allocate-byte-array, buffer-size, read-buffer, copy-buffer, with-mapped-buffer

Definition

USING: accessors gpu.buffers.private opengl.gl typed ;

IN: gpu.buffers

TYPED:: update-buffer
    ( buffer-ptr: buffer-ptr size: integer data -- )
    buffer-ptr buffer>> :> buffer buffer bind-buffer :> target
    target buffer-ptr offset>> size data glBufferSubData ;