mirror of
https://github.com/vulkano-rs/vulkano.git
synced 2024-11-22 14:56:42 +00:00
454 lines
16 KiB
Rust
454 lines
16 KiB
Rust
// This example demonstrates one way of preparing data structures and loading SPIRV shaders from
|
|
// external source (file system).
|
|
//
|
|
// Note that you will need to do all correctness checking yourself.
|
|
//
|
|
// `vert.glsl` and `frag.glsl` must be built by you. One way of building them is to use `shaderc`:
|
|
//
|
|
// ```bash
|
|
// glslc -fshader-stage=vert vert.glsl -o vert.spv
|
|
// glslc -fshader-stage=frag frag.glsl -o frag.spv
|
|
// ```
|
|
//
|
|
// Vulkano uses shaderc to build your shaders internally.
|
|
|
|
use std::{error::Error, fs::File, io::Read, path::Path, sync::Arc};
|
|
use vulkano::{
|
|
buffer::{Buffer, BufferContents, BufferCreateInfo, BufferUsage},
|
|
command_buffer::{
|
|
allocator::StandardCommandBufferAllocator, CommandBufferBeginInfo, CommandBufferLevel,
|
|
CommandBufferUsage, RecordingCommandBuffer, RenderPassBeginInfo,
|
|
},
|
|
device::{
|
|
physical::PhysicalDeviceType, Device, DeviceCreateInfo, DeviceExtensions, QueueCreateInfo,
|
|
QueueFlags,
|
|
},
|
|
image::{view::ImageView, Image, ImageUsage},
|
|
instance::{Instance, InstanceCreateFlags, InstanceCreateInfo},
|
|
memory::allocator::{AllocationCreateInfo, MemoryTypeFilter, StandardMemoryAllocator},
|
|
pipeline::{
|
|
graphics::{
|
|
color_blend::{ColorBlendAttachmentState, ColorBlendState},
|
|
input_assembly::InputAssemblyState,
|
|
multisample::MultisampleState,
|
|
rasterization::{CullMode, FrontFace, RasterizationState},
|
|
vertex_input::{Vertex, VertexDefinition},
|
|
viewport::{Viewport, ViewportState},
|
|
GraphicsPipelineCreateInfo,
|
|
},
|
|
layout::PipelineDescriptorSetLayoutCreateInfo,
|
|
DynamicState, GraphicsPipeline, PipelineLayout, PipelineShaderStageCreateInfo,
|
|
},
|
|
render_pass::{Framebuffer, FramebufferCreateInfo, RenderPass, Subpass},
|
|
shader::{ShaderModule, ShaderModuleCreateInfo},
|
|
swapchain::{
|
|
acquire_next_image, Surface, Swapchain, SwapchainCreateInfo, SwapchainPresentInfo,
|
|
},
|
|
sync::{self, GpuFuture},
|
|
Validated, VulkanError, VulkanLibrary,
|
|
};
|
|
use winit::{
|
|
event::{Event, WindowEvent},
|
|
event_loop::{ControlFlow, EventLoop},
|
|
window::WindowBuilder,
|
|
};
|
|
|
|
fn main() -> Result<(), impl Error> {
|
|
let event_loop = EventLoop::new().unwrap();
|
|
|
|
let library = VulkanLibrary::new().unwrap();
|
|
let required_extensions = Surface::required_extensions(&event_loop).unwrap();
|
|
let instance = Instance::new(
|
|
library,
|
|
InstanceCreateInfo {
|
|
flags: InstanceCreateFlags::ENUMERATE_PORTABILITY,
|
|
enabled_extensions: required_extensions,
|
|
..Default::default()
|
|
},
|
|
)
|
|
.unwrap();
|
|
|
|
let device_extensions = DeviceExtensions {
|
|
khr_swapchain: 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()
|
|
.enumerate()
|
|
.position(|(i, q)| {
|
|
q.queue_flags.intersects(QueueFlags::GRAPHICS)
|
|
&& p.presentation_support(i as u32, &event_loop).unwrap()
|
|
})
|
|
.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();
|
|
|
|
let window = Arc::new(WindowBuilder::new().build(&event_loop).unwrap());
|
|
let surface = Surface::from_window(instance.clone(), window.clone()).unwrap();
|
|
|
|
let (mut swapchain, images) = {
|
|
let surface_capabilities = device
|
|
.physical_device()
|
|
.surface_capabilities(&surface, Default::default())
|
|
.unwrap();
|
|
let image_format = device
|
|
.physical_device()
|
|
.surface_formats(&surface, Default::default())
|
|
.unwrap()[0]
|
|
.0;
|
|
|
|
Swapchain::new(
|
|
device.clone(),
|
|
surface,
|
|
SwapchainCreateInfo {
|
|
min_image_count: surface_capabilities.min_image_count.max(2),
|
|
image_format,
|
|
image_extent: window.inner_size().into(),
|
|
image_usage: ImageUsage::COLOR_ATTACHMENT,
|
|
composite_alpha: surface_capabilities
|
|
.supported_composite_alpha
|
|
.into_iter()
|
|
.next()
|
|
.unwrap(),
|
|
..Default::default()
|
|
},
|
|
)
|
|
.unwrap()
|
|
};
|
|
|
|
let render_pass = vulkano::single_pass_renderpass!(
|
|
device.clone(),
|
|
attachments: {
|
|
color: {
|
|
format: swapchain.image_format(),
|
|
samples: 1,
|
|
load_op: Clear,
|
|
store_op: Store,
|
|
},
|
|
},
|
|
pass: {
|
|
color: [color],
|
|
depth_stencil: {},
|
|
},
|
|
)
|
|
.unwrap();
|
|
|
|
let graphics_pipeline = {
|
|
let vs = {
|
|
let code = read_spirv_words_from_file("vert.spv");
|
|
|
|
// Create a ShaderModule on a device the same Shader::load does it.
|
|
// NOTE: You will have to verify correctness of the data by yourself!
|
|
let module = unsafe {
|
|
ShaderModule::new(device.clone(), ShaderModuleCreateInfo::new(&code)).unwrap()
|
|
};
|
|
module.entry_point("main").unwrap()
|
|
};
|
|
|
|
let fs = {
|
|
let code = read_spirv_words_from_file("frag.spv");
|
|
|
|
let module = unsafe {
|
|
ShaderModule::new(device.clone(), ShaderModuleCreateInfo::new(&code)).unwrap()
|
|
};
|
|
module.entry_point("main").unwrap()
|
|
};
|
|
|
|
let vertex_input_state = Vertex::per_vertex().definition(&vs).unwrap();
|
|
let stages = [
|
|
PipelineShaderStageCreateInfo::new(vs),
|
|
PipelineShaderStageCreateInfo::new(fs),
|
|
];
|
|
let layout = PipelineLayout::new(
|
|
device.clone(),
|
|
PipelineDescriptorSetLayoutCreateInfo::from_stages(&stages)
|
|
.into_pipeline_layout_create_info(device.clone())
|
|
.unwrap(),
|
|
)
|
|
.unwrap();
|
|
let subpass = Subpass::from(render_pass.clone(), 0).unwrap();
|
|
|
|
GraphicsPipeline::new(
|
|
device.clone(),
|
|
None,
|
|
GraphicsPipelineCreateInfo {
|
|
stages: stages.into_iter().collect(),
|
|
vertex_input_state: Some(vertex_input_state),
|
|
input_assembly_state: Some(InputAssemblyState::default()),
|
|
viewport_state: Some(ViewportState::default()),
|
|
rasterization_state: Some(RasterizationState {
|
|
cull_mode: CullMode::Front,
|
|
front_face: FrontFace::CounterClockwise,
|
|
..Default::default()
|
|
}),
|
|
multisample_state: Some(MultisampleState::default()),
|
|
color_blend_state: Some(ColorBlendState::with_attachment_states(
|
|
subpass.num_color_attachments(),
|
|
ColorBlendAttachmentState::default(),
|
|
)),
|
|
dynamic_state: [DynamicState::Viewport].into_iter().collect(),
|
|
subpass: Some(subpass.into()),
|
|
..GraphicsPipelineCreateInfo::layout(layout)
|
|
},
|
|
)
|
|
.unwrap()
|
|
};
|
|
|
|
let mut recreate_swapchain = false;
|
|
|
|
let memory_allocator = Arc::new(StandardMemoryAllocator::new_default(device.clone()));
|
|
|
|
#[derive(BufferContents, Vertex)]
|
|
#[repr(C)]
|
|
pub struct Vertex {
|
|
#[format(R32G32_SFLOAT)]
|
|
pub position: [f32; 2],
|
|
#[format(R32G32B32_SFLOAT)]
|
|
pub color: [f32; 3],
|
|
}
|
|
|
|
let vertices = [
|
|
Vertex {
|
|
position: [-1.0, 1.0],
|
|
color: [1.0, 0.0, 0.0],
|
|
},
|
|
Vertex {
|
|
position: [0.0, -1.0],
|
|
color: [0.0, 1.0, 0.0],
|
|
},
|
|
Vertex {
|
|
position: [1.0, 1.0],
|
|
color: [0.0, 0.0, 1.0],
|
|
},
|
|
];
|
|
let vertex_buffer = Buffer::from_iter(
|
|
memory_allocator,
|
|
BufferCreateInfo {
|
|
usage: BufferUsage::VERTEX_BUFFER,
|
|
..Default::default()
|
|
},
|
|
AllocationCreateInfo {
|
|
memory_type_filter: MemoryTypeFilter::PREFER_DEVICE
|
|
| MemoryTypeFilter::HOST_SEQUENTIAL_WRITE,
|
|
..Default::default()
|
|
},
|
|
vertices,
|
|
)
|
|
.unwrap();
|
|
|
|
// NOTE: We don't create any descriptor sets in this example, but you should
|
|
// note that passing wrong types, providing sets at wrong indexes will cause
|
|
// descriptor set builder to return Err!
|
|
// TODO: Outdated ^
|
|
|
|
let mut viewport = Viewport {
|
|
offset: [0.0, 0.0],
|
|
extent: [0.0, 0.0],
|
|
depth_range: 0.0..=1.0,
|
|
};
|
|
let mut framebuffers = window_size_dependent_setup(&images, render_pass.clone(), &mut viewport);
|
|
let mut previous_frame_end = Some(sync::now(device.clone()).boxed());
|
|
|
|
let command_buffer_allocator = Arc::new(StandardCommandBufferAllocator::new(
|
|
device.clone(),
|
|
Default::default(),
|
|
));
|
|
|
|
event_loop.run(move |event, elwt| {
|
|
elwt.set_control_flow(ControlFlow::Poll);
|
|
|
|
match event {
|
|
Event::WindowEvent {
|
|
event: WindowEvent::CloseRequested,
|
|
..
|
|
} => {
|
|
elwt.exit();
|
|
}
|
|
Event::WindowEvent {
|
|
event: WindowEvent::Resized(_),
|
|
..
|
|
} => {
|
|
recreate_swapchain = true;
|
|
}
|
|
Event::WindowEvent {
|
|
event: WindowEvent::RedrawRequested,
|
|
..
|
|
} => {
|
|
let image_extent: [u32; 2] = window.inner_size().into();
|
|
|
|
if image_extent.contains(&0) {
|
|
return;
|
|
}
|
|
|
|
previous_frame_end.as_mut().unwrap().cleanup_finished();
|
|
|
|
if recreate_swapchain {
|
|
let (new_swapchain, new_images) = swapchain
|
|
.recreate(SwapchainCreateInfo {
|
|
image_extent,
|
|
..swapchain.create_info()
|
|
})
|
|
.expect("failed to recreate swapchain");
|
|
|
|
swapchain = new_swapchain;
|
|
framebuffers = window_size_dependent_setup(
|
|
&new_images,
|
|
render_pass.clone(),
|
|
&mut viewport,
|
|
);
|
|
recreate_swapchain = false;
|
|
}
|
|
|
|
let (image_index, suboptimal, acquire_future) =
|
|
match acquire_next_image(swapchain.clone(), None).map_err(Validated::unwrap) {
|
|
Ok(r) => r,
|
|
Err(VulkanError::OutOfDate) => {
|
|
recreate_swapchain = true;
|
|
return;
|
|
}
|
|
Err(e) => panic!("failed to acquire next image: {e}"),
|
|
};
|
|
|
|
if suboptimal {
|
|
recreate_swapchain = true;
|
|
}
|
|
|
|
let mut builder = RecordingCommandBuffer::new(
|
|
command_buffer_allocator.clone(),
|
|
queue.queue_family_index(),
|
|
CommandBufferLevel::Primary,
|
|
CommandBufferBeginInfo {
|
|
usage: CommandBufferUsage::MultipleSubmit,
|
|
..Default::default()
|
|
},
|
|
)
|
|
.unwrap();
|
|
|
|
builder
|
|
.begin_render_pass(
|
|
RenderPassBeginInfo {
|
|
clear_values: vec![Some([0.0, 0.0, 0.0, 1.0].into())],
|
|
..RenderPassBeginInfo::framebuffer(
|
|
framebuffers[image_index as usize].clone(),
|
|
)
|
|
},
|
|
Default::default(),
|
|
)
|
|
.unwrap()
|
|
.set_viewport(0, [viewport.clone()].into_iter().collect())
|
|
.unwrap()
|
|
.bind_pipeline_graphics(graphics_pipeline.clone())
|
|
.unwrap()
|
|
.bind_vertex_buffers(0, vertex_buffer.clone())
|
|
.unwrap();
|
|
|
|
unsafe {
|
|
builder.draw(vertex_buffer.len() as u32, 1, 0, 0).unwrap();
|
|
}
|
|
|
|
builder.end_render_pass(Default::default()).unwrap();
|
|
|
|
let command_buffer = builder.end().unwrap();
|
|
let future = previous_frame_end
|
|
.take()
|
|
.unwrap()
|
|
.join(acquire_future)
|
|
.then_execute(queue.clone(), command_buffer)
|
|
.unwrap()
|
|
.then_swapchain_present(
|
|
queue.clone(),
|
|
SwapchainPresentInfo::swapchain_image_index(swapchain.clone(), image_index),
|
|
)
|
|
.then_signal_fence_and_flush();
|
|
|
|
match future.map_err(Validated::unwrap) {
|
|
Ok(future) => {
|
|
previous_frame_end = Some(future.boxed());
|
|
}
|
|
Err(VulkanError::OutOfDate) => {
|
|
recreate_swapchain = true;
|
|
previous_frame_end = Some(sync::now(device.clone()).boxed());
|
|
}
|
|
Err(e) => {
|
|
println!("failed to flush future: {e}");
|
|
previous_frame_end = Some(sync::now(device.clone()).boxed());
|
|
}
|
|
}
|
|
}
|
|
Event::AboutToWait => window.request_redraw(),
|
|
_ => (),
|
|
}
|
|
})
|
|
}
|
|
|
|
/// This function is called once during initialization, then again whenever the window is resized.
|
|
fn window_size_dependent_setup(
|
|
images: &[Arc<Image>],
|
|
render_pass: Arc<RenderPass>,
|
|
viewport: &mut Viewport,
|
|
) -> Vec<Arc<Framebuffer>> {
|
|
let extent = images[0].extent();
|
|
viewport.extent = [extent[0] as f32, extent[1] as f32];
|
|
|
|
images
|
|
.iter()
|
|
.map(|image| {
|
|
let view = ImageView::new_default(image.clone()).unwrap();
|
|
Framebuffer::new(
|
|
render_pass.clone(),
|
|
FramebufferCreateInfo {
|
|
attachments: vec![view],
|
|
..Default::default()
|
|
},
|
|
)
|
|
.unwrap()
|
|
})
|
|
.collect::<Vec<_>>()
|
|
}
|
|
|
|
fn read_spirv_words_from_file(path: impl AsRef<Path>) -> Vec<u32> {
|
|
// Read the file.
|
|
let path = path.as_ref();
|
|
let mut bytes = vec![];
|
|
let path = Path::new(env!("CARGO_MANIFEST_DIR")).join(path);
|
|
let mut file = File::open(&path).unwrap();
|
|
file.read_to_end(&mut bytes).unwrap();
|
|
|
|
vulkano::shader::spirv::bytes_to_words(&bytes)
|
|
.unwrap_or_else(|err| panic!("file `{}`: {}", path.display(), err))
|
|
.into_owned()
|
|
}
|