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rusticl/mem: accelerate Buffer::copy_rect

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It's doing a bunch of copies, but at least they are done on the GPU, not
the CPU.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33426>
This commit is contained in:
Karol Herbst 2025-02-05 22:31:17 +01:00 • committed by Marge Bot
parent c4dc97b29b
commit b76784e655
1 changed files with 39 additions and 20 deletions
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59
src/gallium/frontends/rusticl/core/memory.rs
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@ -1137,29 +1137,48 @@ impl Buffer {
dst_row_pitch: usize,
dst_slice_pitch: usize,
) -> CLResult<()> {
let (offset, size) =
CLVec::calc_offset_size(src_origin, region, [1, src_row_pitch, src_slice_pitch]);
let tx_src = self.tx(ctx, offset, size, RWFlags::RD)?;
let src_offset = CLVec::calc_offset(src_origin, [1, src_row_pitch, src_slice_pitch]);
let mut src_offset = self.apply_offset(src_offset)?;
let src_res = self.get_res_for_access(ctx, RWFlags::RD)?;
let (offset, size) =
CLVec::calc_offset_size(dst_origin, region, [1, dst_row_pitch, dst_slice_pitch]);
let tx_dst = dst.tx(ctx, offset, size, RWFlags::WR)?;
let dst_offset = CLVec::calc_offset(dst_origin, [1, dst_row_pitch, dst_slice_pitch]);
let mut dst_offset = self.apply_offset(dst_offset)?;
let dst_res = dst.get_res_for_access(ctx, RWFlags::WR)?;
perf_warning!("clEnqueueCopyBufferRect stalls the GPU");
if src_row_pitch == dst_row_pitch && region[1] == src_row_pitch {
let slice_size = (region[0] * region[1]).try_into_with_err(CL_OUT_OF_RESOURCES)?;
for _ in 0..region[2] {
ctx.resource_copy_buffer(
src_res,
src_offset as i32,
dst_res,
dst_offset as u32,
slice_size,
);
// TODO check to use hw accelerated paths (e.g. resource_copy_region or blits)
sw_copy(
tx_src.ptr(),
tx_dst.ptr(),
region,
&CLVec::default(),
src_row_pitch,
src_slice_pitch,
&CLVec::default(),
dst_row_pitch,
dst_slice_pitch,
1,
);
src_offset += src_slice_pitch;
dst_offset += dst_slice_pitch;
}
} else {
let row_size = region[0].try_into_with_err(CL_OUT_OF_RESOURCES)?;
for _ in 0..region[2] {
for _ in 0..region[1] {
ctx.resource_copy_buffer(
src_res,
src_offset as i32,
dst_res,
dst_offset as u32,
row_size,
);
src_offset += src_row_pitch;
dst_offset += dst_row_pitch;
}
src_offset += src_slice_pitch - (src_row_pitch * region[1]);
dst_offset += dst_slice_pitch - (dst_row_pitch * region[1]);
}
}
Ok(())
}