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// Copyright 2021 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#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->SetInitialized(true);
}
return {};
}
BufferBase* ScratchBuffer::GetBuffer() const {
DAWN_ASSERT(mBuffer.Get() != nullptr);
return mBuffer.Get();
}
} // namespace dawn::native