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native: implement copy buffer to buffer

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This commit is contained in:
Dzmitry Malyshau 2019-02-06 09:04:31 -05:00
parent 4b1897b254
commit 2f0601c92c
1 changed files with 74 additions and 1 deletions
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75
wgpu-native/src/command/transfer.rs
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@ -33,6 +33,79 @@ pub struct TextureCopyView {
//TODO: pub aspect: TextureAspect,
}
#[no_mangle]
pub extern "C" fn wgpu_command_buffer_copy_buffer_to_buffer(
command_buffer_id: CommandBufferId,
src: BufferId,
src_offset: u32,
dst: BufferId,
dst_offset: u32,
size: u32,
) {
let mut cmb_guard = HUB.command_buffers.write();
let cmb = cmb_guard.get_mut(command_buffer_id);
let buffer_guard = HUB.buffers.read();
let (src_buffer, src_tracktion) = cmb.buffer_tracker
.get_with_usage(
&*buffer_guard,
src,
BufferUsageFlags::TRANSFER_SRC,
TrackPermit::REPLACE,
)
.unwrap();
let src_barrier = match src_tracktion {
Tracktion::Init |
Tracktion::Keep => None,
Tracktion::Extend { .. } => unreachable!(),
Tracktion::Replace { old } => Some(hal::memory::Barrier::Buffer {
states: conv::map_buffer_state(old) .. hal::buffer::Access::TRANSFER_READ,
target: &src_buffer.raw,
families: None,
range: None .. None,
}),
};
let (dst_buffer, dst_tracktion) = cmb.buffer_tracker
.get_with_usage(
&*buffer_guard,
dst,
BufferUsageFlags::TRANSFER_DST,
TrackPermit::REPLACE,
)
.unwrap();
let dst_barrier = match dst_tracktion {
Tracktion::Init |
Tracktion::Keep => None,
Tracktion::Extend { .. } => unreachable!(),
Tracktion::Replace { old } => Some(hal::memory::Barrier::Buffer {
states: conv::map_buffer_state(old) .. hal::buffer::Access::TRANSFER_WRITE,
target: &dst_buffer.raw,
families: None,
range: None .. None,
}),
};
let region = hal::command::BufferCopy {
src: src_offset as hal::buffer::Offset,
dst: dst_offset as hal::buffer::Offset,
size: size as hal::buffer::Offset,
};
let cmb_raw = cmb.raw.last_mut().unwrap();
unsafe {
cmb_raw.pipeline_barrier(
all_buffer_stages() .. all_buffer_stages(),
hal::memory::Dependencies::empty(),
src_barrier.into_iter().chain(dst_barrier),
);
cmb_raw.copy_buffer(
&src_buffer.raw,
&dst_buffer.raw,
iter::once(region),
);
}
}
#[no_mangle]
pub extern "C" fn wgpu_command_buffer_copy_buffer_to_texture(
command_buffer_id: CommandBufferId,
@ -58,7 +131,7 @@ pub extern "C" fn wgpu_command_buffer_copy_buffer_to_texture(
Tracktion::Keep => None,
Tracktion::Extend { .. } => unreachable!(),
Tracktion::Replace { old } => Some(hal::memory::Barrier::Buffer {
states: conv::map_buffer_state(old) .. hal::buffer::Access::TRANSFER_WRITE,
states: conv::map_buffer_state(old) .. hal::buffer::Access::TRANSFER_READ,
target: &src_buffer.raw,
families: None,
range: None .. None,