src/dawn/native/webgpu/BindGroupLayoutWGPU.cpp

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

#include "dawn/native/webgpu/DeviceWGPU.h"
#include "dawn/native/webgpu/Forward.h"

namespace dawn::native::webgpu {

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

BindGroupLayout::BindGroupLayout(Device* device,
                                 const UnpackedPtr<BindGroupLayoutDescriptor>& descriptor)
    : BindGroupLayoutInternalBase(device, descriptor),
      ObjectWGPU(device->wgpu.bindGroupLayoutRelease),
      mBindGroupAllocator(MakeFrontendBindGroupAllocator<BindGroup>(4096)) {
    auto desc = ToAPI(*descriptor);
    mInnerHandle = device->wgpu.deviceCreateBindGroupLayout(device->GetInnerHandle(), desc);
    DAWN_ASSERT(mInnerHandle);
}

Ref<BindGroup> BindGroupLayout::AllocateBindGroup(
    const UnpackedPtr<BindGroupDescriptor>& descriptor) {
    Device* device = ToBackend(GetDevice());
    return AcquireRef(mBindGroupAllocator->Allocate(device, descriptor));
}

void BindGroupLayout::DeallocateBindGroup(BindGroup* bindGroup) {
    mBindGroupAllocator->Deallocate(bindGroup);
}

void BindGroupLayout::ReduceMemoryUsage() {
    mBindGroupAllocator->DeleteEmptySlabs();
}

}  // namespace dawn::native::webgpu