use wgt::Backend;
use crate::{
global::Global,
hub::Hub,
identity::GlobalIdentityHandlerFactory,
instance::{HalSurface, Instance, Surface},
};
pub trait HalApi: hal::Api {
const VARIANT: Backend;
fn create_instance_from_hal(name: &str, hal_instance: Self::Instance) -> Instance;
fn instance_as_hal(instance: &Instance) -> Option<&Self::Instance>;
fn hub<G: GlobalIdentityHandlerFactory>(global: &Global<G>) -> &Hub<Self, G>;
fn get_surface(surface: &Surface) -> Option<&HalSurface<Self>>;
fn get_surface_mut(surface: &mut Surface) -> Option<&mut HalSurface<Self>>;
}
impl HalApi for hal::api::Empty {
const VARIANT: Backend = Backend::Empty;
fn create_instance_from_hal(_: &str, _: Self::Instance) -> Instance {
unimplemented!("called empty api")
}
fn instance_as_hal(_: &Instance) -> Option<&Self::Instance> {
unimplemented!("called empty api")
}
fn hub<G: GlobalIdentityHandlerFactory>(_: &Global<G>) -> &Hub<Self, G> {
unimplemented!("called empty api")
}
fn get_surface(_: &Surface) -> Option<&HalSurface<Self>> {
unimplemented!("called empty api")
}
fn get_surface_mut(_: &mut Surface) -> Option<&mut HalSurface<Self>> {
unimplemented!("called empty api")
}
}
#[cfg(all(feature = "vulkan", not(target_arch = "wasm32")))]
impl HalApi for hal::api::Vulkan {
const VARIANT: Backend = Backend::Vulkan;
fn create_instance_from_hal(name: &str, hal_instance: Self::Instance) -> Instance {
Instance {
name: name.to_owned(),
vulkan: Some(hal_instance),
..Default::default()
}
}
fn instance_as_hal(instance: &Instance) -> Option<&Self::Instance> {
instance.vulkan.as_ref()
}
fn hub<G: GlobalIdentityHandlerFactory>(global: &Global<G>) -> &Hub<Self, G> {
&global.hubs.vulkan
}
fn get_surface(surface: &Surface) -> Option<&HalSurface<Self>> {
surface.vulkan.as_ref()
}
fn get_surface_mut(surface: &mut Surface) -> Option<&mut HalSurface<Self>> {
surface.vulkan.as_mut()
}
}
#[cfg(all(feature = "metal", any(target_os = "macos", target_os = "ios")))]
impl HalApi for hal::api::Metal {
const VARIANT: Backend = Backend::Metal;
fn create_instance_from_hal(name: &str, hal_instance: Self::Instance) -> Instance {
Instance {
name: name.to_owned(),
metal: Some(hal_instance),
..Default::default()
}
}
fn instance_as_hal(instance: &Instance) -> Option<&Self::Instance> {
instance.metal.as_ref()
}
fn hub<G: GlobalIdentityHandlerFactory>(global: &Global<G>) -> &Hub<Self, G> {
&global.hubs.metal
}
fn get_surface(surface: &Surface) -> Option<&HalSurface<Self>> {
surface.metal.as_ref()
}
fn get_surface_mut(surface: &mut Surface) -> Option<&mut HalSurface<Self>> {
surface.metal.as_mut()
}
}
#[cfg(all(feature = "dx12", windows))]
impl HalApi for hal::api::Dx12 {
const VARIANT: Backend = Backend::Dx12;
fn create_instance_from_hal(name: &str, hal_instance: Self::Instance) -> Instance {
Instance {
name: name.to_owned(),
dx12: Some(hal_instance),
..Default::default()
}
}
fn instance_as_hal(instance: &Instance) -> Option<&Self::Instance> {
instance.dx12.as_ref()
}
fn hub<G: GlobalIdentityHandlerFactory>(global: &Global<G>) -> &Hub<Self, G> {
&global.hubs.dx12
}
fn get_surface(surface: &Surface) -> Option<&HalSurface<Self>> {
surface.dx12.as_ref()
}
fn get_surface_mut(surface: &mut Surface) -> Option<&mut HalSurface<Self>> {
surface.dx12.as_mut()
}
}
#[cfg(all(feature = "dx11", windows))]
impl HalApi for hal::api::Dx11 {
const VARIANT: Backend = Backend::Dx11;
fn create_instance_from_hal(name: &str, hal_instance: Self::Instance) -> Instance {
Instance {
name: name.to_owned(),
dx11: Some(hal_instance),
..Default::default()
}
}
fn instance_as_hal(instance: &Instance) -> Option<&Self::Instance> {
instance.dx11.as_ref()
}
fn hub<G: GlobalIdentityHandlerFactory>(global: &Global<G>) -> &Hub<Self, G> {
&global.hubs.dx11
}
fn get_surface(surface: &Surface) -> Option<&HalSurface<Self>> {
surface.dx11.as_ref()
}
fn get_surface_mut(surface: &mut Surface) -> Option<&mut HalSurface<Self>> {
surface.dx11.as_mut()
}
}
#[cfg(feature = "gles")]
impl HalApi for hal::api::Gles {
const VARIANT: Backend = Backend::Gl;
fn create_instance_from_hal(name: &str, hal_instance: Self::Instance) -> Instance {
#[allow(clippy::needless_update)]
Instance {
name: name.to_owned(),
gl: Some(hal_instance),
..Default::default()
}
}
fn instance_as_hal(instance: &Instance) -> Option<&Self::Instance> {
instance.gl.as_ref()
}
fn hub<G: GlobalIdentityHandlerFactory>(global: &Global<G>) -> &Hub<Self, G> {
&global.hubs.gl
}
fn get_surface(surface: &Surface) -> Option<&HalSurface<Self>> {
surface.gl.as_ref()
}
fn get_surface_mut(surface: &mut Surface) -> Option<&mut HalSurface<Self>> {
surface.gl.as_mut()
}
}