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use crate::uses::*;
use GL::{spec::*, types::*, unigl::*};
pub struct Mapping<'l, T: Buffer, D> {
o: &'l ArrObject<T, D>,
size: usize,
pub raw_mem: *const D,
}
impl<'l, T: Buffer, D> Mapping<'l, T, D> {
pub fn new(o: &'l mut ArrObject<T, D>, offset: isize, len: usize, access: GLbitfield) -> Self {
let raw_mem = GLCheck!(glMapBufferRange(T::TYPE, o.obj, offset, isize(len), access)) as *const D;
Self {
o,
size: len / type_size!(D),
raw_mem,
}
}
pub fn mem(&self) -> &'l [D] {
unsafe { slice::from_raw_parts(self.raw_mem, self.size) }
}
}
impl<T: Buffer, D> Drop for Mapping<'_, T, D> {
fn drop(&mut self) {
let _valid = GLCheck!(glUnmapBuffer(T::TYPE, self.o.obj));
ASSERT!(_valid == gl::TRUE, "Buffer memory was corrupted by OS");
}
}
pub struct MappingMut<'l, T: Buffer, D> {
o: &'l ArrObject<T, D>,
size: usize,
pub raw_mem: *mut D,
}
impl<'l, T: Buffer, D> MappingMut<'l, T, D> {
pub fn new(o: &'l mut ArrObject<T, D>, offset: isize, len: usize, access: GLbitfield) -> Self {
let raw_mem = GLCheck!(glMapBufferRange(T::TYPE, o.obj, offset, isize(len), access)) as *mut D;
Self {
o,
size: len / type_size!(D),
raw_mem,
}
}
pub fn mem(&self) -> &'l mut [D] {
unsafe { slice::from_raw_parts_mut(self.raw_mem, self.size) }
}
}
impl<T: Buffer, D> Drop for MappingMut<'_, T, D> {
fn drop(&mut self) {
let _valid = GLCheck!(glUnmapBuffer(T::TYPE, self.o.obj));
ASSERT!(_valid == gl::TRUE, "Buffer memory was corrupted by OS");
}
}