mirror of
https://github.com/vulkano-rs/vulkano.git
synced 2024-11-28 17:54:45 +00:00
210 lines
6.2 KiB
Rust
210 lines
6.2 KiB
Rust
// TODO: Give a paragraph about what specialization are and what problems they solve.
|
|
|
|
use std::sync::Arc;
|
|
use vulkano::{
|
|
buffer::{Buffer, BufferCreateInfo, BufferUsage},
|
|
command_buffer::{
|
|
allocator::StandardCommandBufferAllocator, AutoCommandBufferBuilder, CommandBufferUsage,
|
|
},
|
|
descriptor_set::{
|
|
allocator::StandardDescriptorSetAllocator, DescriptorSet, WriteDescriptorSet,
|
|
},
|
|
device::{
|
|
physical::PhysicalDeviceType, Device, DeviceCreateInfo, DeviceExtensions, QueueCreateInfo,
|
|
QueueFlags,
|
|
},
|
|
instance::{Instance, InstanceCreateFlags, InstanceCreateInfo},
|
|
memory::allocator::{AllocationCreateInfo, MemoryTypeFilter, StandardMemoryAllocator},
|
|
pipeline::{
|
|
compute::ComputePipelineCreateInfo, layout::PipelineDescriptorSetLayoutCreateInfo,
|
|
ComputePipeline, Pipeline, PipelineBindPoint, PipelineLayout,
|
|
PipelineShaderStageCreateInfo,
|
|
},
|
|
sync::{self, GpuFuture},
|
|
VulkanLibrary,
|
|
};
|
|
|
|
fn main() {
|
|
let library = VulkanLibrary::new().unwrap();
|
|
let instance = Instance::new(
|
|
library,
|
|
InstanceCreateInfo {
|
|
flags: InstanceCreateFlags::ENUMERATE_PORTABILITY,
|
|
..Default::default()
|
|
},
|
|
)
|
|
.unwrap();
|
|
|
|
let device_extensions = DeviceExtensions {
|
|
khr_storage_buffer_storage_class: true,
|
|
..DeviceExtensions::empty()
|
|
};
|
|
let (physical_device, queue_family_index) = instance
|
|
.enumerate_physical_devices()
|
|
.unwrap()
|
|
.filter(|p| p.supported_extensions().contains(&device_extensions))
|
|
.filter_map(|p| {
|
|
p.queue_family_properties()
|
|
.iter()
|
|
.position(|q| q.queue_flags.intersects(QueueFlags::COMPUTE))
|
|
.map(|i| (p, i as u32))
|
|
})
|
|
.min_by_key(|(p, _)| match p.properties().device_type {
|
|
PhysicalDeviceType::DiscreteGpu => 0,
|
|
PhysicalDeviceType::IntegratedGpu => 1,
|
|
PhysicalDeviceType::VirtualGpu => 2,
|
|
PhysicalDeviceType::Cpu => 3,
|
|
PhysicalDeviceType::Other => 4,
|
|
_ => 5,
|
|
})
|
|
.unwrap();
|
|
|
|
println!(
|
|
"using device: {} (type: {:?})",
|
|
physical_device.properties().device_name,
|
|
physical_device.properties().device_type,
|
|
);
|
|
|
|
let (device, mut queues) = Device::new(
|
|
physical_device,
|
|
DeviceCreateInfo {
|
|
enabled_extensions: device_extensions,
|
|
queue_create_infos: vec![QueueCreateInfo {
|
|
queue_family_index,
|
|
..Default::default()
|
|
}],
|
|
..Default::default()
|
|
},
|
|
)
|
|
.unwrap();
|
|
|
|
let queue = queues.next().unwrap();
|
|
|
|
mod cs {
|
|
vulkano_shaders::shader! {
|
|
ty: "compute",
|
|
src: r"
|
|
#version 450
|
|
|
|
layout(local_size_x = 64, local_size_y = 1, local_size_z = 1) in;
|
|
|
|
layout(constant_id = 0) const int multiple = 64;
|
|
layout(constant_id = 1) const float addend = 64;
|
|
layout(constant_id = 2) const bool enable = true;
|
|
|
|
layout(set = 0, binding = 0) buffer Data {
|
|
uint data[];
|
|
};
|
|
|
|
void main() {
|
|
uint idx = gl_GlobalInvocationID.x;
|
|
if (enable) {
|
|
data[idx] *= multiple;
|
|
data[idx] += uint(addend);
|
|
}
|
|
}
|
|
",
|
|
}
|
|
}
|
|
|
|
let pipeline = {
|
|
let cs = cs::load(device.clone())
|
|
.unwrap()
|
|
.specialize(
|
|
[(0, 1i32.into()), (1, 1.0f32.into()), (2, true.into())]
|
|
.into_iter()
|
|
.collect(),
|
|
)
|
|
.unwrap()
|
|
.entry_point("main")
|
|
.unwrap();
|
|
let stage = PipelineShaderStageCreateInfo::new(cs);
|
|
let layout = PipelineLayout::new(
|
|
device.clone(),
|
|
PipelineDescriptorSetLayoutCreateInfo::from_stages([&stage])
|
|
.into_pipeline_layout_create_info(device.clone())
|
|
.unwrap(),
|
|
)
|
|
.unwrap();
|
|
|
|
ComputePipeline::new(
|
|
device.clone(),
|
|
None,
|
|
ComputePipelineCreateInfo::stage_layout(stage, layout),
|
|
)
|
|
.unwrap()
|
|
};
|
|
|
|
let memory_allocator = Arc::new(StandardMemoryAllocator::new_default(device.clone()));
|
|
let descriptor_set_allocator = Arc::new(StandardDescriptorSetAllocator::new(
|
|
device.clone(),
|
|
Default::default(),
|
|
));
|
|
let command_buffer_allocator = Arc::new(StandardCommandBufferAllocator::new(
|
|
device.clone(),
|
|
Default::default(),
|
|
));
|
|
|
|
let data_buffer = Buffer::from_iter(
|
|
memory_allocator,
|
|
BufferCreateInfo {
|
|
usage: BufferUsage::STORAGE_BUFFER,
|
|
..Default::default()
|
|
},
|
|
AllocationCreateInfo {
|
|
memory_type_filter: MemoryTypeFilter::PREFER_DEVICE
|
|
| MemoryTypeFilter::HOST_RANDOM_ACCESS,
|
|
..Default::default()
|
|
},
|
|
0..65536u32,
|
|
)
|
|
.unwrap();
|
|
|
|
let layout = &pipeline.layout().set_layouts()[0];
|
|
let descriptor_set = DescriptorSet::new(
|
|
descriptor_set_allocator,
|
|
layout.clone(),
|
|
[WriteDescriptorSet::buffer(0, data_buffer.clone())],
|
|
[],
|
|
)
|
|
.unwrap();
|
|
|
|
let mut builder = AutoCommandBufferBuilder::primary(
|
|
command_buffer_allocator,
|
|
queue.queue_family_index(),
|
|
CommandBufferUsage::OneTimeSubmit,
|
|
)
|
|
.unwrap();
|
|
|
|
builder
|
|
.bind_pipeline_compute(pipeline.clone())
|
|
.unwrap()
|
|
.bind_descriptor_sets(
|
|
PipelineBindPoint::Compute,
|
|
pipeline.layout().clone(),
|
|
0,
|
|
descriptor_set,
|
|
)
|
|
.unwrap();
|
|
|
|
unsafe {
|
|
builder.dispatch([1024, 1, 1]).unwrap();
|
|
}
|
|
|
|
let command_buffer = builder.build().unwrap();
|
|
|
|
let future = sync::now(device)
|
|
.then_execute(queue, command_buffer)
|
|
.unwrap()
|
|
.then_signal_fence_and_flush()
|
|
.unwrap();
|
|
|
|
future.wait(None).unwrap();
|
|
|
|
let data_buffer_content = data_buffer.read().unwrap();
|
|
for n in 0..65536u32 {
|
|
assert_eq!(data_buffer_content[n as usize], n + 1);
|
|
}
|
|
println!("Success");
|
|
}
|