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// Copyright 2018-2023 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" />
const core = globalThis.Deno.core;
const ops = core.ops;
import * as webidl from "internal:deno_webidl/00_webidl.js";
const primordials = globalThis.__bootstrap.primordials;
const { Symbol } = primordials;
import {
_device,
assertDevice,
createGPUTexture,
} from "internal:deno_webgpu/01_webgpu.js";
const _surfaceRid = Symbol("[[surfaceRid]]");
const _configuration = Symbol("[[configuration]]");
const _canvas = Symbol("[[canvas]]");
const _currentTexture = Symbol("[[currentTexture]]");
class GPUCanvasContext {
/** @type {number} */
[_surfaceRid];
/** @type {InnerGPUDevice} */
[_device];
[_configuration];
[_canvas];
/** @type {GPUTexture | undefined} */
[_currentTexture];
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",
});
this[_device] = configuration.device[_device];
this[_configuration] = configuration;
const device = assertDevice(this, {
prefix,
context: "configuration.device",
});
const { err } = ops.op_webgpu_surface_configure({
surfaceRid: this[_surfaceRid],
deviceRid: device.rid,
format: configuration.format,
viewFormats: configuration.viewFormats,
usage: configuration.usage,
width: configuration.width,
height: configuration.height,
alphaMode: configuration.alphaMode,
});
device.pushError(err);
}
unconfigure() {
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 device = assertDevice(this, { prefix, context: "this" });
if (this[_currentTexture]) {
return this[_currentTexture];
}
const { rid } = ops.op_webgpu_surface_get_current_texture(
device.rid,
this[_surfaceRid],
);
const texture = createGPUTexture(
{
size: {
width: this[_configuration].width,
height: this[_configuration].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;
}
// Extended from spec. Required to present the texture; browser don't need this.
present() {
webidl.assertBranded(this, GPUCanvasContextPrototype);
const prefix = "Failed to execute 'present' on 'GPUCanvasContext'";
const device = assertDevice(this[_currentTexture], {
prefix,
context: "this",
});
ops.op_webgpu_surface_present(device.rid, this[_surfaceRid]);
this[_currentTexture].destroy();
this[_currentTexture] = undefined;
}
}
const GPUCanvasContextPrototype = GPUCanvasContext.prototype;
function createCanvasContext(options) {
const canvasContext = webidl.createBranded(GPUCanvasContext);
canvasContext[_surfaceRid] = options.surfaceRid;
canvasContext[_canvas] = options.canvas;
return canvasContext;
}
export { createCanvasContext, GPUCanvasContext };
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