draw_indirect_count.rs - source

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#![allow(dead_code)]
use crate::version::{DeviceV1_0, InstanceV1_0};
use crate::vk;
use std::ffi::CStr;
use std::mem;

#[derive(Clone)]
pub struct DrawIndirectCount {
    handle: vk::Device,
    draw_indirect_count_fn: vk::KhrDrawIndirectCountFn,
}

impl DrawIndirectCount {
    pub fn new<I: InstanceV1_0, D: DeviceV1_0>(instance: &I, device: &D) -> DrawIndirectCount {
        let draw_indirect_count_fn = vk::KhrDrawIndirectCountFn::load(|name| unsafe {
            mem::transmute(instance.get_device_proc_addr(device.handle(), name.as_ptr()))
        });

        DrawIndirectCount {
            handle: device.handle(),
            draw_indirect_count_fn,
        }
    }

    pub fn name() -> &'static CStr {
        vk::KhrDrawIndirectCountFn::name()
    }

    #[doc = "<https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/vkCmdDrawIndexedIndirectCountKHR.html>"]
    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.draw_indirect_count_fn
            .cmd_draw_indexed_indirect_count_khr(
                command_buffer,
                buffer,
                offset,
                count_buffer,
                count_buffer_offset,
                max_draw_count,
                stride,
            );
    }

    #[doc = "<https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/vkCmdDrawIndirectCountKHR.html>"]
    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.draw_indirect_count_fn
            .cmd_draw_indexed_indirect_count_khr(
                command_buffer,
                buffer,
                offset,
                count_buffer,
                count_buffer_offset,
                max_draw_count,
                stride,
            );
    }
}