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use super::result::HResult as _;
use crate::auxil::dyn_lib::DynLib;
use core::ffi;
use windows::core::Interface as _;
use windows::Win32::Graphics::Dxgi;
#[derive(Debug)]
pub struct DxgiLib {
lib: DynLib,
}
impl DxgiLib {
pub fn new() -> Result<Self, libloading::Error> {
unsafe { DynLib::new("dxgi.dll").map(|lib| Self { lib }) }
}
/// Will error with crate::DeviceError::Unexpected if DXGI 1.3 is not available.
#[cfg_attr(not(dx12), expect(dead_code))]
pub fn debug_interface1(&self) -> Result<Option<Dxgi::IDXGIInfoQueue>, crate::DeviceError> {
// Calls windows::Win32::Graphics::Dxgi::DXGIGetDebugInterface1 on dxgi.dll
type Fun = extern "system" fn(
flags: u32,
riid: *const windows_core::GUID,
pdebug: *mut *mut ffi::c_void,
) -> windows_core::HRESULT;
let func: libloading::Symbol<Fun> =
unsafe { self.lib.get(c"DXGIGetDebugInterface1".to_bytes()) }?;
let mut result__ = None;
let res = (func)(0, &Dxgi::IDXGIInfoQueue::IID, <*mut _>::cast(&mut result__)).ok();
if let Err(ref err) = res {
match err.code() {
Dxgi::DXGI_ERROR_SDK_COMPONENT_MISSING => return Ok(None),
_ => {}
}
}
res.into_device_result("debug_interface1")?;
result__.ok_or(crate::DeviceError::Unexpected).map(Some)
}
/// Will error with crate::DeviceError::Unexpected if DXGI 1.1 is not available.
pub fn create_factory1(&self) -> Result<Dxgi::IDXGIFactory1, crate::DeviceError> {
// Calls windows::Win32::Graphics::Dxgi::CreateDXGIFactory1 on dxgi.dll
type Fun = extern "system" fn(
riid: *const windows_core::GUID,
ppfactory: *mut *mut ffi::c_void,
) -> windows_core::HRESULT;
let func: libloading::Symbol<Fun> =
unsafe { self.lib.get(c"CreateDXGIFactory1".to_bytes()) }?;
let mut result__ = None;
(func)(&Dxgi::IDXGIFactory1::IID, <*mut _>::cast(&mut result__))
.ok()
.into_device_result("create_factory1")?;
result__.ok_or(crate::DeviceError::Unexpected)
}
/// Will error with crate::DeviceError::Unexpected if DXGI 1.4 is not available.
#[cfg_attr(not(dx12), expect(dead_code))]
pub fn create_factory4(
&self,
factory_flags: Dxgi::DXGI_CREATE_FACTORY_FLAGS,
) -> Result<Dxgi::IDXGIFactory4, crate::DeviceError> {
// Calls windows::Win32::Graphics::Dxgi::CreateDXGIFactory2 on dxgi.dll
type Fun = extern "system" fn(
flags: Dxgi::DXGI_CREATE_FACTORY_FLAGS,
riid: *const windows_core::GUID,
ppfactory: *mut *mut ffi::c_void,
) -> windows_core::HRESULT;
let func: libloading::Symbol<Fun> =
unsafe { self.lib.get(c"CreateDXGIFactory2".to_bytes()) }?;
let mut result__ = None;
(func)(
factory_flags,
&Dxgi::IDXGIFactory4::IID,
<*mut _>::cast(&mut result__),
)
.ok()
.into_device_result("create_factory4")?;
result__.ok_or(crate::DeviceError::Unexpected)
}
/// Will error with crate::DeviceError::Unexpected if DXGI 1.3 is not available.
#[cfg_attr(not(dx12), expect(dead_code))]
pub fn create_factory_media(&self) -> Result<Dxgi::IDXGIFactoryMedia, crate::DeviceError> {
// Calls windows::Win32::Graphics::Dxgi::CreateDXGIFactory1 on dxgi.dll
type Fun = extern "system" fn(
riid: *const windows_core::GUID,
ppfactory: *mut *mut ffi::c_void,
) -> windows_core::HRESULT;
let func: libloading::Symbol<Fun> =
unsafe { self.lib.get(c"CreateDXGIFactory1".to_bytes()) }?;
let mut result__ = None;
(func)(&Dxgi::IDXGIFactoryMedia::IID, <*mut _>::cast(&mut result__))
.ok()
.into_device_result("create_factory_media")?;
result__.ok_or(crate::DeviceError::Unexpected)
}
}