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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// @ts-check
/// <reference path="../../core/lib.deno_core.d.ts" />
/// <reference path="../web/internal.d.ts" />
/// <reference path="../web/lib.deno_web.d.ts" />
/// <reference path="./lib.deno_webgpu.d.ts" />
import { primordials } from "ext:core/mod.js";
import {
op_webgpu_surface_configure,
op_webgpu_surface_create,
op_webgpu_surface_get_current_texture,
op_webgpu_surface_present,
} from "ext:core/ops";
const {
ObjectPrototypeIsPrototypeOf,
Symbol,
SymbolFor,
TypeError,
} = primordials;
import * as webidl from "ext:deno_webidl/00_webidl.js";
import { createFilteredInspectProxy } from "ext:deno_console/01_console.js";
import { loadWebGPU } from "ext:deno_webgpu/00_init.js";
const _surfaceRid = Symbol("[[surfaceRid]]");
const _configuration = Symbol("[[configuration]]");
const _canvas = Symbol("[[canvas]]");
const _currentTexture = Symbol("[[currentTexture]]");
const _present = Symbol("[[present]]");
const _dim = Symbol("[[dimensions]]");
class GPUCanvasContext {
/** @type {number} */
[_surfaceRid];
[_configuration];
[_canvas];
/** @type {GPUTexture | undefined} */
[_currentTexture];
[_dim];
get canvas() {
webidl.assertBranded(this, GPUCanvasContextPrototype);
return this[_canvas];
}
constructor() {
webidl.illegalConstructor();
}
configure(configuration) {
webidl.assertBranded(this, GPUCanvasContextPrototype);
const prefix = "Failed to execute 'configure' on 'GPUCanvasContext'";
webidl.requiredArguments(arguments.length, 1, { prefix });
configuration = webidl.converters.GPUCanvasConfiguration(configuration, {
prefix,
context: "Argument 1",
});
const { _device, assertDevice } = loadWebGPU();
this[_device] = configuration.device[_device];
this[_configuration] = configuration;
const device = assertDevice(this, {
prefix,
context: "configuration.device",
});
const { err } = op_webgpu_surface_configure({
surfaceRid: this[_surfaceRid],
deviceRid: device.rid,
format: configuration.format,
viewFormats: configuration.viewFormats,
usage: configuration.usage,
width: this[_dim].width,
height: this[_dim].height,
alphaMode: configuration.alphaMode,
});
device.pushError(err);
}
unconfigure() {
const { _device } = loadWebGPU();
webidl.assertBranded(this, GPUCanvasContextPrototype);
this[_configuration] = null;
this[_device] = null;
}
getCurrentTexture() {
webidl.assertBranded(this, GPUCanvasContextPrototype);
const prefix =
"Failed to execute 'getCurrentTexture' on 'GPUCanvasContext'";
if (this[_configuration] === null) {
throw new DOMException("Context is not configured", "InvalidStateError");
}
const { createGPUTexture, assertDevice } = loadWebGPU();
const device = assertDevice(this, { prefix, context: "this" });
if (this[_currentTexture]) {
return this[_currentTexture];
}
const { rid } = op_webgpu_surface_get_current_texture(
device.rid,
this[_surfaceRid],
);
const texture = createGPUTexture(
{
size: {
width: this[_dim].width,
height: this[_dim].height,
depthOrArrayLayers: 1,
},
mipLevelCount: 1,
sampleCount: 1,
dimension: "2d",
format: this[_configuration].format,
usage: this[_configuration].usage,
},
device,
rid,
);
device.trackResource(texture);
this[_currentTexture] = texture;
return texture;
}
// Required to present the texture; browser don't need this.
[_present]() {
const { assertDevice } = loadWebGPU();
webidl.assertBranded(this, GPUCanvasContextPrototype);
const prefix = "Failed to execute 'present' on 'GPUCanvasContext'";
const device = assertDevice(this[_currentTexture], {
prefix,
context: "this",
});
op_webgpu_surface_present(device.rid, this[_surfaceRid]);
this[_currentTexture].destroy();
this[_currentTexture] = undefined;
}
[SymbolFor("Deno.privateCustomInspect")](inspect, inspectOptions) {
return inspect(
createFilteredInspectProxy({
object: this,
evaluate: ObjectPrototypeIsPrototypeOf(GPUCanvasContextPrototype, this),
keys: [
"canvas",
],
}),
inspectOptions,
);
}
}
const GPUCanvasContextPrototype = GPUCanvasContext.prototype;
function createCanvasContext(options) {
// lazy load webgpu if needed
const canvasContext = webidl.createBranded(GPUCanvasContext);
canvasContext[_surfaceRid] = options.surfaceRid;
canvasContext[_canvas] = options.canvas;
canvasContext[_dim] = { width: options.width, height: options.height };
return canvasContext;
}
// External webgpu surfaces
// TODO(@littledivy): This will extend `OffscreenCanvas` when we add it.
class UnsafeWindowSurface {
#ctx;
#surfaceRid;
#options;
constructor(options) {
if (typeof options !== "object") {
throw new TypeError("options must be provided.");
}
if (
typeof options.width !== "number" || typeof options.height !== "number"
) {
throw new TypeError("width and height must be provided.");
}
this.#surfaceRid = op_webgpu_surface_create(
options.system,
options.windowHandle,
options.displayHandle,
);
this.#options = options;
}
getContext(context) {
if (context !== "webgpu") {
throw new TypeError("Only 'webgpu' context is supported");
}
this.#ctx = createCanvasContext({
surfaceRid: this.#surfaceRid,
...this.#options,
});
return this.#ctx;
}
present() {
this.#ctx[_present]();
}
}
export { GPUCanvasContext, UnsafeWindowSurface };
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