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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
*
* 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.
*
* 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.
*/
#pragma once
/// \file
/// Implementation of mipmap generation routines
#include <array>
#include <unordered_map>
#include "VulkanUtilities/VulkanLogicalDevice.hpp"
#include "VulkanUtilities/VulkanCommandBuffer.hpp"
namespace Diligent
{
class RenderDeviceVkImpl;
class TextureViewVkImpl;
class DeviceContextVkImpl;
class GenerateMipsVkHelper
{
public:
GenerateMipsVkHelper(RenderDeviceVkImpl& DeviceVkImpl);
// clang-format off
GenerateMipsVkHelper (const GenerateMipsVkHelper&) = delete;
GenerateMipsVkHelper ( GenerateMipsVkHelper&&) = delete;
GenerateMipsVkHelper& operator = (const GenerateMipsVkHelper&) = delete;
GenerateMipsVkHelper& operator = ( GenerateMipsVkHelper&&) = delete;
// clang-format on
void GenerateMips(TextureViewVkImpl& TexView, DeviceContextVkImpl& Ctx, IShaderResourceBinding* pSRB);
void CreateSRB(IShaderResourceBinding** ppSRB);
void WarmUpCache(TEXTURE_FORMAT Fmt);
private:
std::array<RefCntAutoPtr<IPipelineState>, 4> CreatePSOs(TEXTURE_FORMAT Fmt);
std::array<RefCntAutoPtr<IPipelineState>, 4>& FindPSOs(TEXTURE_FORMAT Fmt);
VkImageLayout GenerateMipsCS(TextureViewVkImpl& TexView, DeviceContextVkImpl& Ctx, IShaderResourceBinding& SRB, VkImageSubresourceRange& SubresRange);
VkImageLayout GenerateMipsBlit(TextureViewVkImpl& TexView, DeviceContextVkImpl& Ctx, VkImageSubresourceRange& SubresRange) const;
RenderDeviceVkImpl& m_DeviceVkImpl;
std::mutex m_PSOMutex;
std::unordered_map<TEXTURE_FORMAT, std::array<RefCntAutoPtr<IPipelineState>, 4>> m_PSOHash;
static void GetGlImageFormat(const TextureFormatAttribs& FmtAttribs, std::array<char, 16>& GlFmt);
RefCntAutoPtr<IBuffer> m_ConstantsCB;
};
} // namespace Diligent
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