Method Get

Source/Engine/GraphicsDevice/WebGPU/GPUPipelineStateWebGPU.cpp:421–526

}

WGPUBindGroup GPUBindGroupCacheWebGPU::Get(WGPUDevice device, GPUBindGroupKeyWebGPU& key, const StringAnsiView& debugName, uint64 gcFrames)
{
#if WEBGPU_LOG_BIND_GROUPS
#ifdef WEBGPU_LOG_PSO_NAME
    const bool log = debugName.Contains(WEBGPU_LOG_PSO_NAME);
#else
    const bool log = true;
#endif
#endif

    // Generate a hash for the key
    key.LastFrameUsed = Engine::FrameCount;
    key.Hash = Crc::MemCrc32(&key.Entries, key.EntriesCount * sizeof(WGPUBindGroupEntry));
    CombineHash(key.Hash, GetHash(key.EntriesCount));
    CombineHash(key.Hash, GetHash(key.Layout));
    CombineHash(key.Hash, Crc::MemCrc32(&key.Versions, key.EntriesCount * sizeof(uint8)));

    // Lookup for existing bind group
    WGPUBindGroup bindGroup;
#if WEBGPU_CACHE_BIND_GROUPS
    auto found = _bindGroups.Find(key);
    if (found.IsNotEnd())
    {
        // Get cached bind group and update the last usage frame
        bindGroup = found->Value;
        found->Key.LastFrameUsed = key.LastFrameUsed;

        // Periodically remove old bind groups (unused for some time)
        if (key.LastFrameUsed - _lastFrameBindGroupsGC > gcFrames * 2)
        {
            _lastFrameBindGroupsGC = key.LastFrameUsed;
            int32 freed = 0;
            for (auto it = _bindGroups.Begin(); it.IsNotEnd(); ++it)
            {
                if (key.LastFrameUsed - it->Key.LastFrameUsed > gcFrames)
                {
                    freed++;
                    wgpuBindGroupRelease(it->Value);
                    _bindGroups.Remove(it);
                }
            }
#if WEBGPU_LOG_BIND_GROUPS
            if (freed > 0 && log)
                LOG(Info, "[WebGPU] Removed {} old entries from '{}'", freed, String(debugName));
#endif
        }

        return bindGroup;
    }
#endif
    PROFILE_CPU();
    PROFILE_MEM(GraphicsShaders);
#if GPU_ENABLE_RESOURCE_NAMING
    ZoneText(debugName.Get(), debugName.Length());
#endif
#if WEBGPU_LOG_BIND_GROUPS
    if (log)
        LOG(Info, "[WebGPU] GetBindGroup: '{}', hash: {}", String(debugName), key.Hash);