servo/components/script/dom/gputexture.rs
2020-08-06 10:48:17 +05:30

229 lines
7.1 KiB
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use crate::dom::bindings::cell::DomRefCell;
use crate::dom::bindings::codegen::Bindings::GPUTextureBinding::{
GPUExtent3DDict, GPUTextureDimension, GPUTextureFormat, GPUTextureMethods,
};
use crate::dom::bindings::codegen::Bindings::GPUTextureViewBinding::{
GPUTextureAspect, GPUTextureViewDescriptor, GPUTextureViewDimension,
};
use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
use crate::dom::bindings::root::{Dom, DomRoot};
use crate::dom::bindings::str::USVString;
use crate::dom::globalscope::GlobalScope;
use crate::dom::gpudevice::{convert_texture_format, convert_texture_view_dimension, GPUDevice};
use crate::dom::gputextureview::GPUTextureView;
use dom_struct::dom_struct;
use std::num::NonZeroU32;
use std::string::String;
use webgpu::{
identity::WebGPUOpResult, wgt, WebGPU, WebGPURequest, WebGPUTexture, WebGPUTextureView,
};
#[dom_struct]
pub struct GPUTexture {
reflector_: Reflector,
texture: WebGPUTexture,
label: DomRefCell<Option<USVString>>,
device: Dom<GPUDevice>,
#[ignore_malloc_size_of = "channels are hard"]
channel: WebGPU,
#[ignore_malloc_size_of = "defined in webgpu"]
texture_size: GPUExtent3DDict,
mip_level_count: u32,
sample_count: u32,
dimension: GPUTextureDimension,
format: GPUTextureFormat,
texture_usage: u32,
}
impl GPUTexture {
fn new_inherited(
texture: WebGPUTexture,
device: &GPUDevice,
channel: WebGPU,
texture_size: GPUExtent3DDict,
mip_level_count: u32,
sample_count: u32,
dimension: GPUTextureDimension,
format: GPUTextureFormat,
texture_usage: u32,
label: Option<USVString>,
) -> Self {
Self {
reflector_: Reflector::new(),
texture,
label: DomRefCell::new(label),
device: Dom::from_ref(device),
channel,
texture_size,
mip_level_count,
sample_count,
dimension,
format,
texture_usage,
}
}
pub fn new(
global: &GlobalScope,
texture: WebGPUTexture,
device: &GPUDevice,
channel: WebGPU,
texture_size: GPUExtent3DDict,
mip_level_count: u32,
sample_count: u32,
dimension: GPUTextureDimension,
format: GPUTextureFormat,
texture_usage: u32,
label: Option<USVString>,
) -> DomRoot<Self> {
reflect_dom_object(
Box::new(GPUTexture::new_inherited(
texture,
device,
channel,
texture_size,
mip_level_count,
sample_count,
dimension,
format,
texture_usage,
label,
)),
global,
)
}
}
impl Drop for GPUTexture {
fn drop(&mut self) {
self.Destroy()
}
}
impl GPUTexture {
pub fn id(&self) -> WebGPUTexture {
self.texture
}
}
impl GPUTextureMethods for GPUTexture {
/// https://gpuweb.github.io/gpuweb/#dom-gpuobjectbase-label
fn GetLabel(&self) -> Option<USVString> {
self.label.borrow().clone()
}
/// https://gpuweb.github.io/gpuweb/#dom-gpuobjectbase-label
fn SetLabel(&self, value: Option<USVString>) {
*self.label.borrow_mut() = value;
}
/// https://gpuweb.github.io/gpuweb/#dom-gputexture-createview
fn CreateView(&self, descriptor: &GPUTextureViewDescriptor) -> DomRoot<GPUTextureView> {
let dimension = if let Some(d) = descriptor.dimension {
d
} else {
match self.dimension {
GPUTextureDimension::_1d => GPUTextureViewDimension::_1d,
GPUTextureDimension::_2d => {
if self.texture_size.depth > 1 && descriptor.arrayLayerCount.is_none() {
GPUTextureViewDimension::_2d_array
} else {
GPUTextureViewDimension::_2d
}
},
GPUTextureDimension::_3d => GPUTextureViewDimension::_3d,
}
};
let format = descriptor.format.unwrap_or(self.format);
let scope_id = self.device.use_current_scope();
let mut valid = true;
let level_count = descriptor.mipLevelCount.and_then(|count| {
if count == 0 {
valid = false;
}
NonZeroU32::new(count)
});
let array_layer_count = descriptor.arrayLayerCount.and_then(|count| {
if count == 0 {
valid = false;
}
NonZeroU32::new(count)
});
let desc = if valid {
Some(wgt::TextureViewDescriptor {
label: descriptor
.parent
.label
.as_ref()
.map(|s| String::from(s.as_ref())),
format: convert_texture_format(format),
dimension: convert_texture_view_dimension(dimension),
aspect: match descriptor.aspect {
GPUTextureAspect::All => wgt::TextureAspect::All,
GPUTextureAspect::Stencil_only => wgt::TextureAspect::StencilOnly,
GPUTextureAspect::Depth_only => wgt::TextureAspect::DepthOnly,
},
base_mip_level: descriptor.baseMipLevel,
level_count,
base_array_layer: descriptor.baseArrayLayer,
array_layer_count,
})
} else {
self.device.handle_server_msg(
scope_id,
WebGPUOpResult::ValidationError(String::from(
"arrayLayerCount and mipLevelCount cannot be 0",
)),
);
None
};
let texture_view_id = self
.global()
.wgpu_id_hub()
.lock()
.create_texture_view_id(self.device.id().0.backend());
self.channel
.0
.send((
scope_id,
WebGPURequest::CreateTextureView {
texture_id: self.texture.0,
texture_view_id,
device_id: self.device.id().0,
descriptor: desc,
},
))
.expect("Failed to create WebGPU texture view");
let texture_view = WebGPUTextureView(texture_view_id);
GPUTextureView::new(
&self.global(),
texture_view,
&self,
descriptor.parent.label.as_ref().cloned(),
)
}
/// https://gpuweb.github.io/gpuweb/#dom-gputexture-destroy
fn Destroy(&self) {
if let Err(e) = self
.channel
.0
.send((None, WebGPURequest::DestroyTexture(self.texture.0)))
{
warn!(
"Failed to send WebGPURequest::DestroyTexture({:?}) ({})",
self.texture.0, e
);
};
}
}