with-mapped-buffer-array ( ..a buffer access c-type quot: ( ..a array -- ..b ) -- ..b ) (original) (raw)
with-mapped-buffer-array ( ..a buffer access c-type quot: ( ..a array -- ..b ) -- ..b )
GPU-accelerated rendering » Buffer objects
| Prev: | with-mapped-buffer ( ..a buffer access quot: ( ..a alien -- ..b ) -- ..b ) |
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Inputs
| buffer | a buffer |
|---|---|
| access | a buffer-access-mode |
| c-type | a C type |
| quot | a quotation with stack effect ( ..a array -- ..b ) |
Outputs
None
Word description
Maps buffer into CPU address space with access for the dynamic extent of quot. quot is called with the pointer to the mapped memory wrapped in a specialized array of c-type.
Notes
The appropriate specialized array vocabulary must be loaded; otherwise, an error will be thrown. See the specialized-arrays vocabulary for details on the underlying sequence type constructed.
Definition
USING: alien.c-types alien.data kernel math ;
:: with-mapped-buffer-array
( ..a buffer access c-type quot: ( ..a array -- ..b ) -- ..b )
buffer buffer-size c-type heap-size /i :> len buffer access
[ len c-type quot call ] with-mapped-buffer
; inline