ash/examples/src/lib.rs

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#![allow(dead_code)]
#[macro_use]
extern crate ash;
extern crate winit;
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#[cfg(windows)]
extern crate user32;
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#[cfg(windows)]
extern crate winapi;
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use ash::vk;
use std::default::Default;
use ash::entry::Entry;
use ash::instance::Instance;
use ash::extensions::{Swapchain, XlibSurface, Surface, DebugReport, Win32Surface};
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use ash::device::Device;
use std::ptr;
use std::ffi::{CStr, CString};
use std::ops::Drop;
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use ash::instance::InstanceMajor1Minor0;
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// Simple offset_of macro akin to C++ offsetof
#[macro_export]
macro_rules! offset_of{
($base: path, $field: ident) => {
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{
#[allow(unused_unsafe)]
unsafe{
let b: $base = mem::uninitialized();
(&b.$field as *const _ as isize) - (&b as *const _ as isize)
}
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}
}
}
pub fn record_submit_commandbuffer<F: FnOnce(&Device, vk::CommandBuffer)>(device: &Device,
command_buffer: vk::CommandBuffer,
submit_queue: vk::Queue,
wait_mask: &[vk::PipelineStageFlags],
wait_semaphores: &[vk::Semaphore],
signal_semaphores: &[vk::Semaphore],
f: F) {
unsafe {
device.reset_command_buffer(command_buffer,
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vk::COMMAND_BUFFER_RESET_RELEASE_RESOURCES_BIT)
.expect("Reset command buffer failed.");
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let command_buffer_begin_info = vk::CommandBufferBeginInfo {
s_type: vk::StructureType::CommandBufferBeginInfo,
p_next: ptr::null(),
p_inheritance_info: ptr::null(),
flags: vk::COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT,
};
device.begin_command_buffer(command_buffer, &command_buffer_begin_info)
.expect("Begin commandbuffer");
f(device, command_buffer);
device.end_command_buffer(command_buffer).expect("End commandbuffer");
let fence_create_info = vk::FenceCreateInfo {
s_type: vk::StructureType::FenceCreateInfo,
p_next: ptr::null(),
flags: vk::FenceCreateFlags::empty(),
};
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let submit_fence = device.create_fence(&fence_create_info, None)
.expect("Create fence failed.");
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let submit_info = vk::SubmitInfo {
s_type: vk::StructureType::SubmitInfo,
p_next: ptr::null(),
wait_semaphore_count: wait_semaphores.len() as u32,
p_wait_semaphores: wait_semaphores.as_ptr(),
p_wait_dst_stage_mask: wait_mask.as_ptr(),
command_buffer_count: 1,
p_command_buffers: &command_buffer,
signal_semaphore_count: signal_semaphores.len() as u32,
p_signal_semaphores: signal_semaphores.as_ptr(),
};
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device.queue_submit(submit_queue, &[submit_info], submit_fence)
.expect("queue submit failed.");
device.wait_for_fences(&[submit_fence], true, std::u64::MAX)
.expect("Wait for fence failed.");
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device.destroy_fence(submit_fence, None);
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}
}
#[cfg(all(unix, not(target_os = "android")))]
unsafe fn create_surface(instance: &Instance,
entry: &Entry,
window: &winit::Window)
-> Result<vk::SurfaceKHR, vk::Result> {
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use winit::os::unix::WindowExt;
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let x11_display = window.get_xlib_display().unwrap();
let x11_window = window.get_xlib_window().unwrap();
let x11_create_info = vk::XlibSurfaceCreateInfoKHR {
s_type: vk::StructureType::XlibSurfaceCreateInfoKhr,
p_next: ptr::null(),
flags: Default::default(),
window: x11_window as vk::Window,
dpy: x11_display as *mut vk::Display,
};
let xlib_surface_loader = XlibSurface::new(&entry, &instance)
.expect("Unable to load xlib surface");
xlib_surface_loader.create_xlib_surface_khr(&x11_create_info, None)
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}
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#[cfg(windows)]
unsafe fn create_surface(instance: &Instance,
entry: &Entry,
window: &winit::Window)
-> Result<vk::SurfaceKHR, vk::Result> {
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use winit::os::windows::WindowExt;
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let hwnd = window.get_hwnd() as *mut winapi::windef::HWND__;
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let hinstance = unsafe { user32::GetWindow(hwnd, 0) as *const () };
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let win32_create_info = vk::Win32SurfaceCreateInfoKHR {
s_type: vk::StructureType::Win32SurfaceCreateInfoKhr,
p_next: ptr::null(),
flags: Default::default(),
hinstance: hinstance,
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hwnd: hwnd as *const (),
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};
let win32_surface_loader = Win32Surface::new(&entry, &instance)
.expect("Unable to load win32 surface");
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win32_surface_loader.create_win32_surface_khr(&win32_create_info, None)
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}
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#[cfg(all(unix, not(target_os = "android")))]
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fn extension_names() -> Vec<*const i8> {
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vec![Surface::name().as_ptr(), XlibSurface::name().as_ptr(), DebugReport::name().as_ptr()]
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}
#[cfg(all(windows))]
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fn extension_names() -> Vec<*const i8> {
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vec![Surface::name().as_ptr(), Win32Surface::name().as_ptr(), DebugReport::name().as_ptr()]
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}
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unsafe extern "system" fn vulkan_debug_callback(_: vk::DebugReportFlagsEXT,
_: vk::DebugReportObjectTypeEXT,
_: u64,
_: usize,
_: i32,
_: *const i8,
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p_message: *const i8,
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_: *mut ())
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-> u32 {
println!("{:?}", CStr::from_ptr(p_message));
1
}
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pub fn find_memorytype_index(memory_req: &vk::MemoryRequirements,
memory_prop: &vk::PhysicalDeviceMemoryProperties,
flags: vk::MemoryPropertyFlags)
-> Option<u32> {
// Try to find an exactly matching memory flag
let best_suitable_index =
find_memorytype_index_f(memory_req,
memory_prop,
flags,
|property_flags, flags| property_flags == flags);
if best_suitable_index.is_some() {
return best_suitable_index;
}
// Otherwise find a memory flag that works
find_memorytype_index_f(memory_req,
memory_prop,
flags,
|property_flags, flags| property_flags & flags == flags)
}
pub fn find_memorytype_index_f<F: Fn(vk::MemoryPropertyFlags, vk::MemoryPropertyFlags) -> bool>
(memory_req: &vk::MemoryRequirements,
memory_prop: &vk::PhysicalDeviceMemoryProperties,
flags: vk::MemoryPropertyFlags,
f: F)
-> Option<u32> {
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let mut memory_type_bits = memory_req.memory_type_bits;
for (index, ref memory_type) in memory_prop.memory_types.iter().enumerate() {
if memory_type_bits & 1 == 1 {
if f(memory_type.property_flags, flags) {
return Some(index as u32);
}
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}
memory_type_bits = memory_type_bits >> 1;
}
None
}
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fn resize_callback(width: u32, height: u32) {
println!("Window resized to {}x{}", width, height);
}
pub struct ExampleBase {
pub entry: Entry,
pub instance: Instance,
pub device: Device,
pub surface_loader: Surface,
pub swapchain_loader: Swapchain,
pub debug_report_loader: DebugReport,
pub window: winit::Window,
pub debug_call_back: vk::DebugReportCallbackEXT,
pub pdevice: vk::PhysicalDevice,
pub device_memory_properties: vk::PhysicalDeviceMemoryProperties,
pub queue_family_index: u32,
pub present_queue: vk::Queue,
pub surface: vk::SurfaceKHR,
pub surface_format: vk::SurfaceFormatKHR,
pub surface_resolution: vk::Extent2D,
pub swapchain: vk::SwapchainKHR,
pub present_images: Vec<vk::Image>,
pub present_image_views: Vec<vk::ImageView>,
pub pool: vk::CommandPool,
pub draw_command_buffer: vk::CommandBuffer,
pub setup_command_buffer: vk::CommandBuffer,
pub depth_image: vk::Image,
pub depth_image_view: vk::ImageView,
pub depth_image_memory: vk::DeviceMemory,
pub present_complete_semaphore: vk::Semaphore,
pub rendering_complete_semaphore: vk::Semaphore,
}
impl ExampleBase {
pub fn render_loop<F: Fn()>(&self, f: F) {
'render: loop {
for event in self.window.poll_events() {
match event {
winit::Event::KeyboardInput(_, _, Some(winit::VirtualKeyCode::Escape)) |
winit::Event::Closed => break 'render,
_ => (),
}
}
f();
}
}
pub fn new(window_width: u32, window_height: u32) -> Self {
unsafe {
let window = winit::WindowBuilder::new()
.with_title("A fantastic window!")
.with_dimensions(window_width, window_height)
.with_window_resize_callback(resize_callback)
.build()
.unwrap();
let entry = Entry::load_vulkan().unwrap();
let app_name = CString::new("VulkanTriangle").unwrap();
let raw_name = app_name.as_ptr();
let layer_names = [CString::new("VK_LAYER_LUNARG_standard_validation").unwrap()];
let layers_names_raw: Vec<*const i8> = layer_names.iter()
.map(|raw_name| raw_name.as_ptr())
.collect();
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let extension_names_raw = extension_names();
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let appinfo = vk::ApplicationInfo {
p_application_name: raw_name,
s_type: vk::StructureType::ApplicationInfo,
p_next: ptr::null(),
application_version: 0,
p_engine_name: raw_name,
engine_version: 0,
api_version: vk_make_version!(1, 0, 36),
};
let create_info = vk::InstanceCreateInfo {
s_type: vk::StructureType::InstanceCreateInfo,
p_next: ptr::null(),
flags: Default::default(),
p_application_info: &appinfo,
pp_enabled_layer_names: layers_names_raw.as_ptr(),
enabled_layer_count: layers_names_raw.len() as u32,
pp_enabled_extension_names: extension_names_raw.as_ptr(),
enabled_extension_count: extension_names_raw.len() as u32,
};
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let instance: Instance = entry.create_instance(&create_info, None)
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.expect("Instance creation error");
let debug_info = vk::DebugReportCallbackCreateInfoEXT {
s_type: vk::StructureType::DebugReportCallbackCreateInfoExt,
p_next: ptr::null(),
flags: vk::DEBUG_REPORT_ERROR_BIT_EXT | vk::DEBUG_REPORT_WARNING_BIT_EXT |
vk::DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT,
pfn_callback: vulkan_debug_callback,
p_user_data: ptr::null_mut(),
};
let debug_report_loader = DebugReport::new(&entry, &instance)
.expect("Unable to load debug report");
let debug_call_back =
debug_report_loader.create_debug_report_callback_ext(&debug_info, None)
.unwrap();
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let surface = create_surface(&instance, &entry, &window).unwrap();
let pdevices = instance.enumerate_physical_devices().expect("Physical device error");
let surface_loader = Surface::new(&entry, &instance)
.expect("Unable to load the Surface extension");
let (pdevice, queue_family_index) = pdevices.iter()
.map(|pdevice| {
instance.get_physical_device_queue_family_properties(*pdevice)
.iter()
.enumerate()
.filter_map(|(index, ref info)| {
let supports_graphic_and_surface =
info.queue_flags.subset(vk::QUEUE_GRAPHICS_BIT) &&
surface_loader.get_physical_device_surface_support_khr(*pdevice,
index as u32,
surface);
match supports_graphic_and_surface {
true => Some((*pdevice, index)),
_ => None,
}
})
.nth(0)
})
.filter_map(|v| v)
.nth(0)
.expect("Couldn't find suitable device.");
let queue_family_index = queue_family_index as u32;
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let device_extension_names_raw = [Swapchain::name().as_ptr()];
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let features =
vk::PhysicalDeviceFeatures { shader_clip_distance: 1, ..Default::default() };
let priorities = [1.0];
let queue_info = vk::DeviceQueueCreateInfo {
s_type: vk::StructureType::DeviceQueueCreateInfo,
p_next: ptr::null(),
flags: Default::default(),
queue_family_index: queue_family_index as u32,
p_queue_priorities: priorities.as_ptr(),
queue_count: priorities.len() as u32,
};
let device_create_info = vk::DeviceCreateInfo {
s_type: vk::StructureType::DeviceCreateInfo,
p_next: ptr::null(),
flags: Default::default(),
queue_create_info_count: 1,
p_queue_create_infos: &queue_info,
enabled_layer_count: 0,
pp_enabled_layer_names: ptr::null(),
enabled_extension_count: device_extension_names_raw.len() as u32,
pp_enabled_extension_names: device_extension_names_raw.as_ptr(),
p_enabled_features: &features,
};
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let device: Device = instance.create_device(pdevice, &device_create_info, None)
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.unwrap();
let present_queue = device.get_device_queue(queue_family_index as u32, 0);
let surface_formats =
surface_loader.get_physical_device_surface_formats_khr(pdevice, surface)
.unwrap();
let surface_format = surface_formats.iter()
.map(|sfmt| {
match sfmt.format {
vk::Format::Undefined => {
vk::SurfaceFormatKHR {
format: vk::Format::B8g8r8Unorm,
color_space: sfmt.color_space,
}
}
_ => sfmt.clone(),
}
})
.nth(0)
.expect("Unable to find suitable surface format.");
let surface_capabilities =
surface_loader.get_physical_device_surface_capabilities_khr(pdevice, surface)
.unwrap();
let desired_image_count = surface_capabilities.min_image_count + 1;
assert!(surface_capabilities.min_image_count <= desired_image_count &&
surface_capabilities.max_image_count >= desired_image_count,
"Image count err");
let surface_resolution = match surface_capabilities.current_extent.width {
std::u32::MAX => {
vk::Extent2D {
width: window_width,
height: window_height,
}
}
_ => surface_capabilities.current_extent,
};
let pre_transform = if surface_capabilities.supported_transforms
.subset(vk::SURFACE_TRANSFORM_IDENTITY_BIT_KHR) {
vk::SURFACE_TRANSFORM_IDENTITY_BIT_KHR
} else {
surface_capabilities.current_transform
};
let present_modes =
surface_loader.get_physical_device_surface_present_modes_khr(pdevice, surface)
.unwrap();
let present_mode = present_modes.iter()
.cloned()
.find(|&mode| mode == vk::PresentModeKHR::Mailbox)
.unwrap_or(vk::PresentModeKHR::Fifo);
let swapchain_loader = Swapchain::new(&instance, &device)
.expect("Unable to load swapchain");
let swapchain_create_info = vk::SwapchainCreateInfoKHR {
s_type: vk::StructureType::SwapchainCreateInfoKhr,
p_next: ptr::null(),
flags: Default::default(),
surface: surface,
min_image_count: desired_image_count,
image_color_space: surface_format.color_space,
image_format: surface_format.format,
image_extent: surface_resolution.clone(),
image_usage: vk::IMAGE_USAGE_COLOR_ATTACHMENT_BIT,
image_sharing_mode: vk::SharingMode::Exclusive,
pre_transform: pre_transform,
composite_alpha: vk::COMPOSITE_ALPHA_OPAQUE_BIT_KHR,
present_mode: present_mode,
clipped: 1,
old_swapchain: vk::SwapchainKHR::null(),
image_array_layers: 1,
p_queue_family_indices: ptr::null(),
queue_family_index_count: 0,
};
let swapchain = swapchain_loader.create_swapchain_khr(&swapchain_create_info, None)
.unwrap();
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let pool_create_info = vk::CommandPoolCreateInfo {
s_type: vk::StructureType::CommandPoolCreateInfo,
p_next: ptr::null(),
flags: vk::COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT,
queue_family_index: queue_family_index,
};
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let pool = device.create_command_pool(&pool_create_info, None).unwrap();
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let command_buffer_allocate_info = vk::CommandBufferAllocateInfo {
s_type: vk::StructureType::CommandBufferAllocateInfo,
p_next: ptr::null(),
command_buffer_count: 2,
command_pool: pool,
level: vk::CommandBufferLevel::Primary,
};
let command_buffers = device.allocate_command_buffers(&command_buffer_allocate_info)
.unwrap();
let setup_command_buffer = command_buffers[0];
let draw_command_buffer = command_buffers[1];
let present_images = swapchain_loader.get_swapchain_images_khr(swapchain).unwrap();
let present_image_views: Vec<vk::ImageView> = present_images.iter()
.map(|&image| {
let create_view_info = vk::ImageViewCreateInfo {
s_type: vk::StructureType::ImageViewCreateInfo,
p_next: ptr::null(),
flags: Default::default(),
view_type: vk::ImageViewType::Type2d,
format: surface_format.format,
components: vk::ComponentMapping {
r: vk::ComponentSwizzle::R,
g: vk::ComponentSwizzle::G,
b: vk::ComponentSwizzle::B,
a: vk::ComponentSwizzle::A,
},
subresource_range: vk::ImageSubresourceRange {
aspect_mask: vk::IMAGE_ASPECT_COLOR_BIT,
base_mip_level: 0,
level_count: 1,
base_array_layer: 0,
layer_count: 1,
},
image: image,
};
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device.create_image_view(&create_view_info, None).unwrap()
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})
.collect();
let device_memory_properties = instance.get_physical_device_memory_properties(pdevice);
let depth_image_create_info = vk::ImageCreateInfo {
s_type: vk::StructureType::ImageCreateInfo,
p_next: ptr::null(),
flags: vk::IMAGE_CREATE_SPARSE_BINDING_BIT,
image_type: vk::ImageType::Type2d,
format: vk::Format::D16Unorm,
extent: vk::Extent3D {
width: surface_resolution.width,
height: surface_resolution.height,
depth: 1,
},
mip_levels: 1,
array_layers: 1,
samples: vk::SAMPLE_COUNT_1_BIT,
tiling: vk::ImageTiling::Optimal,
usage: vk::IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT,
sharing_mode: vk::SharingMode::Exclusive,
queue_family_index_count: 0,
p_queue_family_indices: ptr::null(),
initial_layout: vk::ImageLayout::Undefined,
};
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let depth_image = device.create_image(&depth_image_create_info, None).unwrap();
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let depth_image_memory_req = device.get_image_memory_requirements(depth_image);
let depth_image_memory_index =
find_memorytype_index(&depth_image_memory_req,
&device_memory_properties,
vk::MEMORY_PROPERTY_DEVICE_LOCAL_BIT)
.expect("Unable to find suitable memory index for depth image.");
let depth_image_allocate_info = vk::MemoryAllocateInfo {
s_type: vk::StructureType::MemoryAllocateInfo,
p_next: ptr::null(),
allocation_size: depth_image_memory_req.size,
memory_type_index: depth_image_memory_index,
};
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let depth_image_memory = device.allocate_memory(&depth_image_allocate_info, None)
.unwrap();
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device.bind_image_memory(depth_image, depth_image_memory, 0)
.expect("Unable to bind depth image memory");
record_submit_commandbuffer(&device,
setup_command_buffer,
present_queue,
&[vk::PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT],
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&[],
&[],
|device, setup_command_buffer| {
let layout_transition_barrier = vk::ImageMemoryBarrier {
s_type: vk::StructureType::ImageMemoryBarrier,
p_next: ptr::null(),
src_access_mask: Default::default(),
dst_access_mask: vk::ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT |
vk::ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT,
old_layout: vk::ImageLayout::Undefined,
new_layout: vk::ImageLayout::DepthStencilAttachmentOptimal,
src_queue_family_index: vk::VK_QUEUE_FAMILY_IGNORED,
dst_queue_family_index: vk::VK_QUEUE_FAMILY_IGNORED,
image: depth_image,
subresource_range: vk::ImageSubresourceRange {
aspect_mask: vk::IMAGE_ASPECT_DEPTH_BIT,
base_mip_level: 0,
level_count: 1,
base_array_layer: 0,
layer_count: 1,
},
};
device.cmd_pipeline_barrier(setup_command_buffer,
vk::PIPELINE_STAGE_TOP_OF_PIPE_BIT,
vk::PIPELINE_STAGE_TOP_OF_PIPE_BIT,
vk::DependencyFlags::empty(),
&[],
&[],
&[layout_transition_barrier]);
});
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let depth_image_view_info = vk::ImageViewCreateInfo {
s_type: vk::StructureType::ImageViewCreateInfo,
p_next: ptr::null(),
flags: Default::default(),
view_type: vk::ImageViewType::Type2d,
format: depth_image_create_info.format,
components: vk::ComponentMapping {
r: vk::ComponentSwizzle::Identity,
g: vk::ComponentSwizzle::Identity,
b: vk::ComponentSwizzle::Identity,
a: vk::ComponentSwizzle::Identity,
},
subresource_range: vk::ImageSubresourceRange {
aspect_mask: vk::IMAGE_ASPECT_DEPTH_BIT,
base_mip_level: 0,
level_count: 1,
base_array_layer: 0,
layer_count: 1,
},
image: depth_image,
};
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let depth_image_view = device.create_image_view(&depth_image_view_info, None).unwrap();
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let semaphore_create_info = vk::SemaphoreCreateInfo {
s_type: vk::StructureType::SemaphoreCreateInfo,
p_next: ptr::null(),
flags: Default::default(),
};
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let present_complete_semaphore = device.create_semaphore(&semaphore_create_info, None)
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.unwrap();
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let rendering_complete_semaphore = device.create_semaphore(&semaphore_create_info, None)
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.unwrap();
ExampleBase {
entry: entry,
instance: instance,
device: device,
queue_family_index: queue_family_index,
pdevice: pdevice,
device_memory_properties: device_memory_properties,
window: window,
surface_loader: surface_loader,
surface_format: surface_format,
present_queue: present_queue,
surface_resolution: surface_resolution,
swapchain_loader: swapchain_loader,
swapchain: swapchain,
present_images: present_images,
present_image_views: present_image_views,
pool: pool,
draw_command_buffer: draw_command_buffer,
setup_command_buffer: setup_command_buffer,
depth_image: depth_image,
depth_image_view: depth_image_view,
present_complete_semaphore: present_complete_semaphore,
rendering_complete_semaphore: rendering_complete_semaphore,
surface: surface,
debug_call_back: debug_call_back,
debug_report_loader: debug_report_loader,
depth_image_memory: depth_image_memory,
}
}
}
}
impl Drop for ExampleBase {
fn drop(&mut self) {
unsafe {
self.device.device_wait_idle().unwrap();
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self.device.destroy_semaphore(self.present_complete_semaphore, None);
self.device.destroy_semaphore(self.rendering_complete_semaphore, None);
self.device.free_memory(self.depth_image_memory, None);
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self.device.destroy_image_view(self.depth_image_view, None);
self.device.destroy_image(self.depth_image, None);
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for &image_view in self.present_image_views.iter() {
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self.device.destroy_image_view(image_view, None);
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}
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self.device.destroy_command_pool(self.pool, None);
self.swapchain_loader.destroy_swapchain_khr(self.swapchain, None);
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self.device.destroy_device(None);
self.surface_loader.destroy_surface_khr(self.surface, None);
self.debug_report_loader.destroy_debug_report_callback_ext(self.debug_call_back, None);
self.instance.destroy_instance(None);
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}
}
}