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use crate::vk;
use crate::{Device, Instance};
use std::ffi::CStr;
use std::mem;
/// <https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/VK_EXT_mesh_shader.html>
#[derive(Clone)]
pub struct MeshShader {
fp: vk::ExtMeshShaderFn,
}
impl MeshShader {
pub fn new(instance: &Instance, device: &Device) -> Self {
let fp = vk::ExtMeshShaderFn::load(|name| unsafe {
mem::transmute(instance.get_device_proc_addr(device.handle(), name.as_ptr()))
});
Self { fp }
}
/// <https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdDrawMeshTasksEXT.html>
#[inline]
pub unsafe fn cmd_draw_mesh_tasks(
&self,
command_buffer: vk::CommandBuffer,
group_count_x: u32,
group_count_y: u32,
group_count_z: u32,
) {
(self.fp.cmd_draw_mesh_tasks_ext)(
command_buffer,
group_count_x,
group_count_y,
group_count_z,
);
}
/// <https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdDrawMeshTasksIndirectEXT.html>
///
/// `buffer` contains `draw_count` [`vk::DrawMeshTasksIndirectCommandEXT`] structures starting at `offset` in bytes, holding the draw parameters.
#[inline]
pub unsafe fn cmd_draw_mesh_tasks_indirect(
&self,
command_buffer: vk::CommandBuffer,
buffer: vk::Buffer,
offset: vk::DeviceSize,
draw_count: u32,
stride: u32,
) {
(self.fp.cmd_draw_mesh_tasks_indirect_ext)(
command_buffer,
buffer,
offset,
draw_count,
stride,
);
}
/// <https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/vkCmdDrawMeshTasksIndirectCountEXT.html>
///
/// `buffer` contains a maximum of `max_draw_count` [`vk::DrawMeshTasksIndirectCommandEXT`] structures starting at `offset` in bytes, holding the draw parameters.
/// `count_buffer` is the buffer containing the draw count, starting at `count_buffer_offset` in bytes.
/// The actual number of executed draw calls is the minimum of the count specified in `count_buffer` and `max_draw_count`.
#[inline]
pub unsafe fn cmd_draw_mesh_tasks_indirect_count(
&self,
command_buffer: vk::CommandBuffer,
buffer: vk::Buffer,
offset: vk::DeviceSize,
count_buffer: vk::Buffer,
count_buffer_offset: vk::DeviceSize,
max_draw_count: u32,
stride: u32,
) {
(self.fp.cmd_draw_mesh_tasks_indirect_count_ext)(
command_buffer,
buffer,
offset,
count_buffer,
count_buffer_offset,
max_draw_count,
stride,
);
}
#[inline]
pub const fn name() -> &'static CStr {
vk::ExtMeshShaderFn::name()
}
#[inline]
pub fn fp(&self) -> &vk::ExtMeshShaderFn {
&self.fp
}
}