48 lines
2.0 KiB
C#
48 lines
2.0 KiB
C#
// Copyright (c) Wojciech Figat. All rights reserved.
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using System.IO;
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using Flax.Build.NativeCpp;
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using Flax.Build.Platforms;
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/// <summary>
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/// WebGPU graphics backend module.
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/// </summary>
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public class GraphicsDeviceWebGPU : GraphicsDeviceBaseModule
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{
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/// <summary>
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/// Using ASYNCIFY leads to simple code by waiting on async WebGPU API callbacks with emscripten_sleep but doubles the code size and adds some overhead.
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/// https://emscripten.org/docs/porting/asyncify.html <br/>
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/// 0 - no async <br/>
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/// 1 - via Asyncify (causes the WASM to be much larger) <br/>
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/// 2 - via JSPI (experimental) <br/>
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/// </summary>
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public int WithAsyncify = 2;
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/// <inheritdoc />
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public override void Setup(BuildOptions options)
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{
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base.Setup(options);
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var port = "--use-port=emdawnwebgpu:cpp_bindings=false";
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options.OutputFiles.Add(port);
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options.CompileEnv.CustomArgs.Add(port);
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if (WithAsyncify == 2)
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{
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options.PrivateDefinitions.Add("WEBGPU_ASYNCIFY=2");
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options.LinkEnv.CustomArgs.Add("-sJSPI");
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options.LinkEnv.CustomArgs.Add("-sDEFAULT_LIBRARY_FUNCS_TO_INCLUDE=$getWasmTableEntry");
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}
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else if (WithAsyncify == 1)
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{
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options.PrivateDefinitions.Add("WEBGPU_ASYNCIFY");
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options.LinkEnv.CustomArgs.Add("-sASYNCIFY");
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options.LinkEnv.CustomArgs.Add("-sASYNCIFY_STACK_SIZE=8192");
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//options.LinkEnv.CustomArgs.Add("-sASYNCIFY_ONLY=[\"main\",\"WebGPUAsyncWait(AsyncWaitParamsWebGPU)\"]"); // TODO: try indirect calls only to reduce the code size
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options.LinkEnv.CustomArgs.Add("-sEXPORT_ALL"); // This bloats JS but otherwise dynamic calls don't work properly
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}
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options.PublicDefinitions.Add("GRAPHICS_API_WEBGPU");
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options.PrivateIncludePaths.Add(Path.Combine(EmscriptenSdk.Instance.EmscriptenPath, "emscripten/cache/ports/emdawnwebgpu/emdawnwebgpu_pkg/webgpu/include"));
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options.PrivateDependencies.Add("lz4");
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}
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}
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