use crate::vk;
use crate::{Device, Instance};
use std::ffi::CStr;
use std::mem;
#[derive(Clone)]
pub struct DrawIndirectCount {
fp: vk::KhrDrawIndirectCountFn,
}
impl DrawIndirectCount {
pub fn new(instance: &Instance, device: &Device) -> Self {
let fp = vk::KhrDrawIndirectCountFn::load(|name| unsafe {
mem::transmute(instance.get_device_proc_addr(device.handle(), name.as_ptr()))
});
Self { fp }
}
#[inline]
pub unsafe fn cmd_draw_indexed_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_indexed_indirect_count_khr)(
command_buffer,
buffer,
offset,
count_buffer,
count_buffer_offset,
max_draw_count,
stride,
);
}
#[inline]
pub unsafe fn cmd_draw_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_indirect_count_khr)(
command_buffer,
buffer,
offset,
count_buffer,
count_buffer_offset,
max_draw_count,
stride,
);
}
#[inline]
pub const fn name() -> &'static CStr {
vk::KhrDrawIndirectCountFn::name()
}
#[inline]
pub fn fp(&self) -> &vk::KhrDrawIndirectCountFn {
&self.fp
}
}