ash/extensions/ext/
mesh_shader.rs

1use crate::vk;
2use crate::{Device, Instance};
3use std::ffi::CStr;
4use std::mem;
5
6/// <https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/VK_EXT_mesh_shader.html>
7#[derive(Clone)]
8pub struct MeshShader {
9    fp: vk::ExtMeshShaderFn,
10}
11
12impl MeshShader {
13    pub fn new(instance: &Instance, device: &Device) -> Self {
14        let fp = vk::ExtMeshShaderFn::load(|name| unsafe {
15            mem::transmute(instance.get_device_proc_addr(device.handle(), name.as_ptr()))
16        });
17        Self { fp }
18    }
19
20    /// <https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdDrawMeshTasksEXT.html>
21    #[inline]
22    pub unsafe fn cmd_draw_mesh_tasks(
23        &self,
24        command_buffer: vk::CommandBuffer,
25        group_count_x: u32,
26        group_count_y: u32,
27        group_count_z: u32,
28    ) {
29        (self.fp.cmd_draw_mesh_tasks_ext)(
30            command_buffer,
31            group_count_x,
32            group_count_y,
33            group_count_z,
34        );
35    }
36
37    /// <https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdDrawMeshTasksIndirectEXT.html>
38    ///
39    /// `buffer` contains `draw_count` [`vk::DrawMeshTasksIndirectCommandEXT`] structures starting at `offset` in bytes, holding the draw parameters.
40    #[inline]
41    pub unsafe fn cmd_draw_mesh_tasks_indirect(
42        &self,
43        command_buffer: vk::CommandBuffer,
44        buffer: vk::Buffer,
45        offset: vk::DeviceSize,
46        draw_count: u32,
47        stride: u32,
48    ) {
49        (self.fp.cmd_draw_mesh_tasks_indirect_ext)(
50            command_buffer,
51            buffer,
52            offset,
53            draw_count,
54            stride,
55        );
56    }
57
58    /// <https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdDrawMeshTasksIndirectCountEXT.html>
59    ///
60    /// `buffer` contains a maximum of `max_draw_count` [`vk::DrawMeshTasksIndirectCommandEXT`] structures starting at `offset` in bytes, holding the draw parameters.
61    /// `count_buffer` is the buffer containing the draw count, starting at `count_buffer_offset` in bytes.
62    /// The actual number of executed draw calls is the minimum of the count specified in `count_buffer` and `max_draw_count`.
63    #[inline]
64    pub unsafe fn cmd_draw_mesh_tasks_indirect_count(
65        &self,
66        command_buffer: vk::CommandBuffer,
67        buffer: vk::Buffer,
68        offset: vk::DeviceSize,
69        count_buffer: vk::Buffer,
70        count_buffer_offset: vk::DeviceSize,
71        max_draw_count: u32,
72        stride: u32,
73    ) {
74        (self.fp.cmd_draw_mesh_tasks_indirect_count_ext)(
75            command_buffer,
76            buffer,
77            offset,
78            count_buffer,
79            count_buffer_offset,
80            max_draw_count,
81            stride,
82        );
83    }
84
85    #[inline]
86    pub const fn name() -> &'static CStr {
87        vk::ExtMeshShaderFn::name()
88    }
89
90    #[inline]
91    pub fn fp(&self) -> &vk::ExtMeshShaderFn {
92        &self.fp
93    }
94}
ash/extensions/ext/mesh_shader.rs

ash/extensions/ext/
mesh_shader.rs
