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 *  Copyright 2019-2021 Diligent Graphics LLC
 *  Copyright 2015-2019 Egor Yusov
 *  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
 *  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.
 *  In no event and under no legal theory, whether in tort (including negligence), 
 *  contract, or otherwise, unless required by applicable law (such as deliberate 
 *  and grossly negligent acts) or agreed to in writing, shall any Contributor be
 *  liable for any damages, including any direct, indirect, special, incidental, 
 *  or consequential damages of any character arising as a result of this License or 
 *  out of the use or inability to use the software (including but not limited to damages 
 *  for loss of goodwill, work stoppage, computer failure or malfunction, or any and 
 *  all other commercial damages or losses), even if such Contributor has been advised 
 *  of the possibility of such damages.

#include "Metal/TestingEnvironmentMtl.hpp"
#include "Metal/TestingSwapChainMtl.hpp"

#include "DeviceContextMtl.h"
#include "TextureViewMtl.h"

namespace Diligent

namespace Testing

void ClearRenderTargetReferenceMtl(ISwapChain* pSwapChain, const float ClearColor[])
    auto* const pEnv            = TestingEnvironmentMtl::GetInstance();
    auto const mtlCommandQueue = pEnv->GetMtlCommandQueue();

    auto* pTestingSwapChainMtl = ValidatedCast<TestingSwapChainMtl>(pSwapChain);
    auto* pRTV       = pTestingSwapChainMtl->GetCurrentBackBufferRTV();
    auto* mtlTexture = ValidatedCast<ITextureViewMtl>(pRTV)->GetMtlTexture();

        // Autoreleased
        id <MTLCommandBuffer> mtlCommandBuffer = [mtlCommandQueue commandBuffer];

        // Autoreleased
        MTLRenderPassDescriptor* renderPassDesc =
            [MTLRenderPassDescriptor renderPassDescriptor];
        renderPassDesc.colorAttachments[0].texture = mtlTexture;
        renderPassDesc.colorAttachments[0].loadAction  = MTLLoadActionClear;
        renderPassDesc.colorAttachments[0].clearColor  =
            MTLClearColorMake(ClearColor[0], ClearColor[1], ClearColor[2], ClearColor[3]);
        renderPassDesc.colorAttachments[0].storeAction = MTLStoreActionStore;

        // Autoreleased
        id <MTLRenderCommandEncoder> renderEncoder =
            [mtlCommandBuffer renderCommandEncoderWithDescriptor:renderPassDesc];
        [renderEncoder endEncoding];
        [mtlCommandBuffer commit];

} // namespace Testing

} // namespace Diligent