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use crate::pipe::context::*;
use mesa_rust_gen::*;
use std::ops::Deref;
use std::os::raw::c_void;
use std::ptr;
pub struct PipeTransfer {
pipe: *mut pipe_transfer,
res: *mut pipe_resource,
ptr: *mut c_void,
is_buffer: bool,
}
pub struct GuardedPipeTransfer<'a> {
inner: PipeTransfer,
ctx: &'a PipeContext,
}
impl<'a> Deref for GuardedPipeTransfer<'a> {
type Target = PipeTransfer;
fn deref(&self) -> &Self::Target {
&self.inner
}
}
impl<'a> Drop for GuardedPipeTransfer<'a> {
fn drop(&mut self) {
if self.is_buffer {
self.ctx.buffer_unmap(self.inner.pipe);
} else {
self.ctx.texture_unmap(self.inner.pipe);
}
unsafe { pipe_resource_reference(&mut self.inner.res, ptr::null_mut()) };
}
}
impl PipeTransfer {
pub(super) fn new(is_buffer: bool, pipe: *mut pipe_transfer, ptr: *mut c_void) -> Self {
let mut res: *mut pipe_resource = ptr::null_mut();
unsafe { pipe_resource_reference(&mut res, (*pipe).resource) }
Self {
pipe: pipe,
res: res,
ptr: ptr,
is_buffer: is_buffer,
}
}
pub fn ptr(&self) -> *mut c_void {
self.ptr
}
pub fn row_pitch(&self) -> u32 {
unsafe { (*self.pipe).stride }
}
pub fn slice_pitch(&self) -> u32 {
unsafe { (*self.pipe).layer_stride }
}
pub fn bx(&self) -> &pipe_box {
unsafe { &(*self.pipe).box_ }
}
pub fn with_ctx(self, ctx: &PipeContext) -> GuardedPipeTransfer {
GuardedPipeTransfer {
inner: self,
ctx: ctx,
}
}
}
// use set_ctx before operating on the PipeTransfer inside a block where it gets droped
impl Drop for PipeTransfer {
fn drop(&mut self) {
assert_eq!(ptr::null_mut(), self.res);
}
}
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