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// Copyright 2021 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "dawn_native/ScratchBuffer.h"
#include "dawn_native/Device.h"
namespace dawn_native {
ScratchBuffer::ScratchBuffer(DeviceBase* device, wgpu::BufferUsage usage)
: mDevice(device), mUsage(usage) {
}
ScratchBuffer::~ScratchBuffer() = default;
void ScratchBuffer::Reset() {
mBuffer = nullptr;
}
MaybeError ScratchBuffer::EnsureCapacity(uint64_t capacity) {
if (!mBuffer.Get() || mBuffer->GetSize() < capacity) {
BufferDescriptor descriptor;
descriptor.size = capacity;
descriptor.usage = mUsage;
DAWN_TRY_ASSIGN(mBuffer, mDevice->CreateBuffer(&descriptor));
mBuffer->SetIsDataInitialized();
}
return {};
}
BufferBase* ScratchBuffer::GetBuffer() const {
ASSERT(mBuffer.Get() != nullptr);
return mBuffer.Get();
}
} // namespace dawn_native