51 lines
2.1 KiB
Text
51 lines
2.1 KiB
Text
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/*
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Crafter®.Graphics
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Copyright (C) 2026 Catcrafts®
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catcrafts.net
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*/
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// DOM-mode RT pipeline. Mirrors PipelineRTVulkan's surface — Init takes
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// the same kind of (raygen, miss, hit) shader-group spans plus an SBT.
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// The big difference is implementation: there's no native RT pipeline on
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// WebGPU, so Init assembles a single megakernel WGSL by concatenating
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// 1. library prelude (types, bindings, ray-flag constants)
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// 2. user closesthit / anyhit / miss source files
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// 3. library mega-switches dispatched on per-hit hit-group index
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// 4. library helpers (rayAabb / rayTriangle / traverseBlas / traverseTlas)
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// 5. library traceRay function
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// 6. user raygen source files
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// 7. @compute entry calling the registered raygen
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// and hands the result to wgpuLoadRTPipeline.
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//
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// The library WGSL itself lives in additional/dom-webgpu.js (rtWgslPrelude
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// + rtWgslDispatchTemplate). C++ side only knows the substitution markers.
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export module Crafter.Graphics:PipelineRTWebGPU;
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#ifdef CRAFTER_GRAPHICS_WINDOW_DOM
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import std;
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import :RT;
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import :WebGPU;
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import :ShaderBindingTableWebGPU;
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export namespace Crafter {
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class PipelineRTWebGPU {
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public:
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std::uint32_t pipelineHandle = 0;
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// Build the megakernel pipeline. Groups carry indices into
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// `sbt.shaders`. The library generates one `case` per registered
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// group: closest-hit groups dispatch to their closestHitShader's
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// entryFn, miss groups to their generalShader's entryFn, etc.
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// The `cmd` parameter is unused on WebGPU; kept for API symmetry.
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void Init(WebGPUCommandEncoderRef cmd,
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std::span<const RTShaderGroup> raygenGroups,
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std::span<const RTShaderGroup> missGroups,
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std::span<const RTShaderGroup> hitGroups,
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const ShaderBindingTableWebGPU& sbt);
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PipelineRTWebGPU() = default;
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PipelineRTWebGPU(const PipelineRTWebGPU&) = delete;
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PipelineRTWebGPU& operator=(const PipelineRTWebGPU&) = delete;
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};
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}
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#endif // CRAFTER_GRAPHICS_WINDOW_DOM
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