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use crate::vk;
use crate::{Device, Instance};
use std::ffi::CStr;
use std::mem;

/// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/VK_EXT_extended_dynamic_state2.html>
#[derive(Clone)]
pub struct ExtendedDynamicState2 {
    fp: vk::ExtExtendedDynamicState2Fn,
}

impl ExtendedDynamicState2 {
    pub fn new(instance: &Instance, device: &Device) -> Self {
        let fp = vk::ExtExtendedDynamicState2Fn::load(|name| unsafe {
            mem::transmute(instance.get_device_proc_addr(device.handle(), name.as_ptr()))
        });
        Self { fp }
    }

    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCmdSetPatchControlPointsEXT.html>
    pub unsafe fn cmd_set_patch_control_points(
        &self,
        command_buffer: vk::CommandBuffer,
        patch_control_points: u32,
    ) {
        (self.fp.cmd_set_patch_control_points_ext)(command_buffer, patch_control_points)
    }

    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCmdSetRasterizerDiscardEnableEXT.html>
    pub unsafe fn cmd_set_rasterizer_discard_enable(
        &self,
        command_buffer: vk::CommandBuffer,
        rasterizer_discard_enable: bool,
    ) {
        (self.fp.cmd_set_rasterizer_discard_enable_ext)(
            command_buffer,
            rasterizer_discard_enable.into(),
        )
    }

    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCmdSetDepthBiasEnableEXT.html>
    pub unsafe fn cmd_set_depth_bias_enable(
        &self,
        command_buffer: vk::CommandBuffer,
        depth_bias_enable: bool,
    ) {
        (self.fp.cmd_set_depth_bias_enable_ext)(command_buffer, depth_bias_enable.into())
    }

    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCmdSetLogicOpEXT.html>
    pub unsafe fn cmd_set_logic_op(
        &self,
        command_buffer: vk::CommandBuffer,
        logic_op: vk::LogicOp,
    ) {
        (self.fp.cmd_set_logic_op_ext)(command_buffer, logic_op)
    }

    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCmdSetPrimitiveRestartEnableEXT.html>
    pub unsafe fn cmd_set_primitive_restart_enable(
        &self,
        command_buffer: vk::CommandBuffer,
        primitive_restart_enable: bool,
    ) {
        (self.fp.cmd_set_primitive_restart_enable_ext)(
            command_buffer,
            primitive_restart_enable.into(),
        )
    }

    pub const fn name() -> &'static CStr {
        vk::ExtExtendedDynamicState2Fn::name()
    }

    pub fn fp(&self) -> &vk::ExtExtendedDynamicState2Fn {
        &self.fp
    }
}