src/dawn/native/webgpu/PipelineLayoutWGPU.cpp

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#include "dawn/native/webgpu/PipelineLayoutWGPU.h"

#include <array>

#include "dawn/common/Constants.h"
#include "dawn/common/StringViewUtils.h"
#include "dawn/native/webgpu/BindGroupLayoutWGPU.h"
#include "dawn/native/webgpu/DeviceWGPU.h"

namespace dawn::native::webgpu {

// static
Ref<PipelineLayout> PipelineLayout::Create(
    Device* device,
    const UnpackedPtr<PipelineLayoutDescriptor>& descriptor) {
    return AcquireRef(new PipelineLayout(device, descriptor));
}

PipelineLayout::PipelineLayout(Device* device,
                               const UnpackedPtr<PipelineLayoutDescriptor>& descriptor)
    : PipelineLayoutBase(device, descriptor), ObjectWGPU(device->wgpu.pipelineLayoutRelease) {
    WGPUPipelineLayoutDescriptor desc;
    desc.nextInChain = nullptr;
    desc.label = ToOutputStringView(GetLabel());

    std::array<WGPUBindGroupLayout, kMaxBindGroups> bindGroupLayouts;
    bindGroupLayouts.fill(nullptr);
    size_t bindGroupLayoutCount = 0;
    for (BindGroupIndex group : GetBindGroupLayoutsMask()) {
        // Empty or null bind group layout aren't iterated.
        auto idx = static_cast<size_t>(group);
        bindGroupLayoutCount = idx + 1;
        bindGroupLayouts[idx] = ToBackend(GetBindGroupLayout(group))->GetInnerHandle();
    }

    desc.bindGroupLayouts = bindGroupLayouts.data();
    desc.bindGroupLayoutCount = bindGroupLayoutCount;
    desc.immediateSize = GetImmediateDataRangeByteSize();

    mInnerHandle = device->wgpu.deviceCreatePipelineLayout(device->GetInnerHandle(), &desc);
    DAWN_ASSERT(mInnerHandle);
}

}  // namespace dawn::native::webgpu