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|
use com::WeakPtr;
use std::ptr;
use winapi::shared::windef::HWND;
use winapi::shared::{dxgi, dxgi1_2, dxgi1_3, dxgi1_4, dxgiformat, dxgitype};
use winapi::um::{dxgidebug, d3d12};
use winapi::Interface;
use {CommandQueue, D3DResult, Resource, SampleDesc, HRESULT};
bitflags! {
pub struct FactoryCreationFlags: u32 {
const DEBUG = dxgi1_3::DXGI_CREATE_FACTORY_DEBUG;
}
}
#[repr(u32)]
#[derive(Debug, Copy, Clone)]
pub enum Scaling {
Stretch = dxgi1_2::DXGI_SCALING_STRETCH,
Identity = dxgi1_2::DXGI_SCALING_NONE,
Aspect = dxgi1_2::DXGI_SCALING_ASPECT_RATIO_STRETCH,
}
#[repr(u32)]
#[derive(Debug, Copy, Clone)]
pub enum SwapEffect {
Discard = dxgi::DXGI_SWAP_EFFECT_DISCARD,
Sequential = dxgi::DXGI_SWAP_EFFECT_SEQUENTIAL,
FlipDiscard = dxgi::DXGI_SWAP_EFFECT_FLIP_DISCARD,
FlipSequential = dxgi::DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL,
}
#[repr(u32)]
#[derive(Debug, Copy, Clone)]
pub enum AlphaMode {
Unspecified = dxgi1_2::DXGI_ALPHA_MODE_UNSPECIFIED,
Premultiplied = dxgi1_2::DXGI_ALPHA_MODE_PREMULTIPLIED,
Straight = dxgi1_2::DXGI_ALPHA_MODE_STRAIGHT,
Ignore = dxgi1_2::DXGI_ALPHA_MODE_IGNORE,
ForceDword = dxgi1_2::DXGI_ALPHA_MODE_FORCE_DWORD,
}
pub type Adapter1 = WeakPtr<dxgi::IDXGIAdapter1>;
pub type Factory2 = WeakPtr<dxgi1_2::IDXGIFactory2>;
pub type Factory4 = WeakPtr<dxgi1_4::IDXGIFactory4>;
pub type InfoQueue = WeakPtr<dxgidebug::IDXGIInfoQueue>;
pub type SwapChain = WeakPtr<dxgi::IDXGISwapChain>;
pub type SwapChain1 = WeakPtr<dxgi1_2::IDXGISwapChain1>;
pub type SwapChain3 = WeakPtr<dxgi1_4::IDXGISwapChain3>;
#[cfg(feature = "libloading")]
#[derive(Debug)]
pub struct DxgiLib {
lib: libloading::Library,
}
#[cfg(feature = "libloading")]
impl DxgiLib {
pub fn new() -> libloading::Result<Self> {
libloading::Library::new("dxgi.dll")
.map(|lib| DxgiLib {
lib,
})
}
pub fn create_factory2(
&self, flags: FactoryCreationFlags
) -> libloading::Result<D3DResult<Factory4>> {
type Fun = extern "system" fn(
winapi::shared::minwindef::UINT,
winapi::shared::guiddef::REFIID,
*mut *mut winapi::ctypes::c_void,
) -> HRESULT;
let mut factory = Factory4::null();
let hr = unsafe {
let func: libloading::Symbol<Fun> = self.lib.get(b"CreateDXGIFactory2")?;
func(
flags.bits(),
&dxgi1_4::IDXGIFactory4::uuidof(),
factory.mut_void(),
)
};
Ok((factory, hr))
}
pub fn get_debug_interface1(&self) -> libloading::Result<D3DResult<InfoQueue>> {
type Fun = extern "system" fn(
winapi::shared::minwindef::UINT,
winapi::shared::guiddef::REFIID,
*mut *mut winapi::ctypes::c_void,
) -> HRESULT;
let mut queue = InfoQueue::null();
let hr = unsafe {
let func: libloading::Symbol<Fun> = self.lib.get(b"DXGIGetDebugInterface1")?;
func(
0,
&dxgidebug::IDXGIInfoQueue::uuidof(),
queue.mut_void(),
)
};
Ok((queue, hr))
}
}
// TODO: strong types
pub struct SwapchainDesc {
pub width: u32,
pub height: u32,
pub format: dxgiformat::DXGI_FORMAT,
pub stereo: bool,
pub sample: SampleDesc,
pub buffer_usage: dxgitype::DXGI_USAGE,
pub buffer_count: u32,
pub scaling: Scaling,
pub swap_effect: SwapEffect,
pub alpha_mode: AlphaMode,
pub flags: u32,
}
impl Factory2 {
// TODO: interface not complete
pub fn create_swapchain_for_hwnd(
&self,
queue: CommandQueue,
hwnd: HWND,
desc: &SwapchainDesc,
) -> D3DResult<SwapChain1> {
let desc = dxgi1_2::DXGI_SWAP_CHAIN_DESC1 {
AlphaMode: desc.alpha_mode as _,
BufferCount: desc.buffer_count,
Width: desc.width,
Height: desc.height,
Format: desc.format,
Flags: desc.flags,
BufferUsage: desc.buffer_usage,
SampleDesc: dxgitype::DXGI_SAMPLE_DESC {
Count: desc.sample.count,
Quality: desc.sample.quality,
},
Scaling: desc.scaling as _,
Stereo: desc.stereo as _,
SwapEffect: desc.swap_effect as _,
};
let mut swap_chain = SwapChain1::null();
let hr = unsafe {
self.CreateSwapChainForHwnd(
queue.as_mut_ptr() as *mut _,
hwnd,
&desc,
ptr::null(),
ptr::null_mut(),
swap_chain.mut_void() as *mut *mut _,
)
};
(swap_chain, hr)
}
}
impl Factory4 {
#[cfg(feature = "implicit-link")]
pub fn create(flags: FactoryCreationFlags) -> D3DResult<Self> {
let mut factory = Factory4::null();
let hr = unsafe {
dxgi1_3::CreateDXGIFactory2(
flags.bits(),
&dxgi1_4::IDXGIFactory4::uuidof(),
factory.mut_void(),
)
};
(factory, hr)
}
pub fn as_factory2(&self) -> Factory2 {
unsafe { Factory2::from_raw(self.as_mut_ptr() as *mut _) }
}
pub fn enumerate_adapters(&self, id: u32) -> D3DResult<Adapter1> {
let mut adapter = Adapter1::null();
let hr = unsafe { self.EnumAdapters1(id, adapter.mut_void() as *mut *mut _) };
(adapter, hr)
}
}
impl SwapChain {
pub fn get_buffer(&self, id: u32) -> D3DResult<Resource> {
let mut resource = Resource::null();
let hr =
unsafe { self.GetBuffer(id, &d3d12::ID3D12Resource::uuidof(), resource.mut_void()) };
(resource, hr)
}
// TODO: present flags
pub fn present(&self, interval: u32, flags: u32) -> HRESULT {
unsafe { self.Present(interval, flags) }
}
}
impl SwapChain1 {
pub fn as_swapchain0(&self) -> SwapChain {
unsafe { SwapChain::from_raw(self.as_mut_ptr() as *mut _) }
}
}
impl SwapChain3 {
pub fn as_swapchain0(&self) -> SwapChain {
unsafe { SwapChain::from_raw(self.as_mut_ptr() as *mut _) }
}
pub fn get_current_back_buffer_index(&self) -> u32 {
unsafe { self.GetCurrentBackBufferIndex() }
}
}
|
