Struct MappedRange 

pub struct MappedRange {
    pub buffer: BufferHandle,
    pub offset: usize,
    pub length: usize,
    /* private fields */
}

Represents a mapped sub-range of a buffer for CPU write access. The mapping must be flushed and unmapped before the GPU can read.

Fields

buffer: BufferHandle

Buffer that is mapped.

offset: usize

Byte offset into the buffer.

length: usize

Length in bytes of the mapped region.

Implementations

impl MappedRange

pub fn map_write( gl: &Context, buffer: BufferHandle, offset: usize, length: usize, ) -> Self

Map a range of a buffer for writing.

pub fn map_read( gl: &Context, buffer: BufferHandle, offset: usize, length: usize, ) -> Self

Map a range for reading.

pub fn flush(&mut self, gl: &Context)

Flush the mapped range (call before unmap to ensure GPU sees writes).

pub fn unmap(self, gl: &Context)

Unmap the buffer. Must be called after writing is complete.

pub fn is_flushed(&self) -> bool

Whether flush has been called.