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example-runner-wgpu: fix compute example.

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Eduard-Mihai Burtescu 2023-07-20 05:20:52 +03:00 committed by Eduard-Mihai Burtescu
parent 2ed23d0013
commit 9808cd0309
1 changed files with 19 additions and 4 deletions
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23
examples/runners/wgpu/src/compute.rs
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@ -24,7 +24,8 @@ pub async fn start_internal(
.await
.expect("Failed to find an appropriate adapter");
let mut features = wgpu::Features::TIMESTAMP_QUERY;
let mut features =
wgpu::Features::TIMESTAMP_QUERY | wgpu::Features::TIMESTAMP_QUERY_INSIDE_PASSES;
if options.force_spirv_passthru {
features |= wgpu::Features::SPIRV_SHADER_PASSTHROUGH;
}
@ -110,10 +111,17 @@ pub async fn start_internal(
let timestamp_buffer = device.create_buffer(&wgpu::BufferDescriptor {
label: Some("Timestamps buffer"),
size: 16,
usage: wgpu::BufferUsages::QUERY_RESOLVE | wgpu::BufferUsages::COPY_SRC,
mapped_at_creation: false,
});
let timestamp_readback_buffer = device.create_buffer(&wgpu::BufferDescriptor {
label: None,
size: 16,
usage: wgpu::BufferUsages::MAP_READ | wgpu::BufferUsages::COPY_DST,
mapped_at_creation: true,
});
timestamp_buffer.unmap();
timestamp_readback_buffer.unmap();
let bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
label: None,
@ -150,10 +158,17 @@ pub async fn start_internal(
src.len() as wgpu::BufferAddress,
);
encoder.resolve_query_set(&queries, 0..2, &timestamp_buffer, 0);
encoder.copy_buffer_to_buffer(
&timestamp_buffer,
0,
&timestamp_readback_buffer,
0,
timestamp_buffer.size(),
);
queue.submit(Some(encoder.finish()));
let buffer_slice = readback_buffer.slice(..);
let timestamp_slice = timestamp_buffer.slice(..);
let timestamp_slice = timestamp_readback_buffer.slice(..);
timestamp_slice.map_async(wgpu::MapMode::Read, |r| r.unwrap());
buffer_slice.map_async(wgpu::MapMode::Read, |r| r.unwrap());
// NOTE(eddyb) `poll` should return only after the above callbacks fire
@ -173,7 +188,7 @@ pub async fn start_internal(
drop(data);
readback_buffer.unmap();
drop(timing_data);
timestamp_buffer.unmap();
timestamp_readback_buffer.unmap();
let mut max = 0;
for (src, out) in src_range.zip(result.iter().copied()) {
if out == u32::MAX {