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use wgt::{Backend, WasmNotSendSync};
use crate::{
global::Global,
hub::Hub,
instance::{Instance, Surface},
};
pub trait HalApi: hal::Api + 'static + WasmNotSendSync {
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(global: &Global) -> &Hub<Self>;
fn surface_as_hal(surface: &Surface) -> Option<&Self::Surface>;
}
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(_: &Global) -> &Hub<Self> {
unimplemented!("called empty api")
}
fn surface_as_hal(_: &Surface) -> Option<&Self::Surface> {
unimplemented!("called empty api")
}
}
#[cfg(vulkan)]
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(global: &Global) -> &Hub<Self> {
&global.hubs.vulkan
}
fn surface_as_hal(surface: &Surface) -> Option<&Self::Surface> {
surface.vulkan.as_ref()
}
}
#[cfg(metal)]
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(global: &Global) -> &Hub<Self> {
&global.hubs.metal
}
fn surface_as_hal(surface: &Surface) -> Option<&Self::Surface> {
surface.metal.as_ref()
}
}
#[cfg(dx12)]
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(global: &Global) -> &Hub<Self> {
&global.hubs.dx12
}
fn surface_as_hal(surface: &Surface) -> Option<&Self::Surface> {
surface.dx12.as_ref()
}
}
#[cfg(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(global: &Global) -> &Hub<Self> {
&global.hubs.gl
}
fn surface_as_hal(surface: &Surface) -> Option<&Self::Surface> {
surface.gl.as_ref()
}
}