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/* Copyright (C) 2024 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "precompiled.h"
#include "SamplerManager.h"
#include "lib/hash.h"
#include "renderer/backend/vulkan/Device.h"
#include "renderer/backend/vulkan/Mapping.h"
#include "renderer/backend/vulkan/Utilities.h"
namespace Renderer
{
namespace Backend
{
namespace Vulkan
{
size_t CSamplerManager::SamplerDescHash::operator()(const Sampler::Desc& samplerDesc) const
{
size_t seed = 0;
hash_combine(seed, samplerDesc.magFilter);
hash_combine(seed, samplerDesc.minFilter);
hash_combine(seed, samplerDesc.mipFilter);
hash_combine(seed, samplerDesc.addressModeU);
hash_combine(seed, samplerDesc.addressModeV);
hash_combine(seed, samplerDesc.addressModeW);
hash_combine(seed, samplerDesc.mipLODBias);
hash_combine(seed, samplerDesc.anisotropyEnabled);
hash_combine(seed, samplerDesc.maxAnisotropy);
hash_combine(seed, samplerDesc.borderColor);
hash_combine(seed, samplerDesc.compareEnabled);
hash_combine(seed, samplerDesc.compareOp);
return seed;
}
bool CSamplerManager::SamplerDescEqual::operator()(const Sampler::Desc& lhs, const Sampler::Desc& rhs) const
{
return
lhs.magFilter == rhs.magFilter &&
lhs.minFilter == rhs.minFilter &&
lhs.mipFilter == rhs.mipFilter &&
lhs.addressModeU == rhs.addressModeU &&
lhs.addressModeV == rhs.addressModeV &&
lhs.addressModeW == rhs.addressModeW &&
lhs.mipLODBias == rhs.mipLODBias &&
lhs.anisotropyEnabled == rhs.anisotropyEnabled &&
lhs.maxAnisotropy == rhs.maxAnisotropy &&
lhs.borderColor == rhs.borderColor &&
lhs.compareEnabled == rhs.compareEnabled &&
lhs.compareOp == rhs.compareOp;
}
CSamplerManager::CSamplerManager(CDevice* device)
: m_Device(device)
{
}
CSamplerManager::~CSamplerManager()
{
for (const auto& it : m_SamplerMap)
if (it.second != VK_NULL_HANDLE)
{
m_Device->ScheduleObjectToDestroy(
VK_OBJECT_TYPE_SAMPLER, it.second, VK_NULL_HANDLE);
}
m_SamplerMap.clear();
}
VkSampler CSamplerManager::GetOrCreateSampler(
const Sampler::Desc& samplerDesc)
{
auto it = m_SamplerMap.find(samplerDesc);
if (it != m_SamplerMap.end())
return it->second;
const IDevice::Capabilities& capabilities = m_Device->GetCapabilities();
VkSamplerCreateInfo samplerCreateInfo{};
samplerCreateInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
samplerCreateInfo.magFilter = samplerDesc.magFilter == Sampler::Filter::LINEAR ? VK_FILTER_LINEAR : VK_FILTER_NEAREST;
samplerCreateInfo.minFilter = samplerDesc.minFilter == Sampler::Filter::LINEAR ? VK_FILTER_LINEAR : VK_FILTER_NEAREST;
samplerCreateInfo.mipmapMode = samplerDesc.mipFilter == Sampler::Filter::LINEAR ? VK_SAMPLER_MIPMAP_MODE_LINEAR : VK_SAMPLER_MIPMAP_MODE_NEAREST;
samplerCreateInfo.addressModeU = Mapping::FromAddressMode(samplerDesc.addressModeU);
samplerCreateInfo.addressModeV = Mapping::FromAddressMode(samplerDesc.addressModeV);
samplerCreateInfo.addressModeW = Mapping::FromAddressMode(samplerDesc.addressModeW);
samplerCreateInfo.mipLodBias = samplerDesc.mipLODBias;
if (samplerDesc.anisotropyEnabled && capabilities.anisotropicFiltering)
{
samplerCreateInfo.anisotropyEnable = VK_TRUE;
samplerCreateInfo.maxAnisotropy = std::min(samplerDesc.maxAnisotropy, capabilities.maxAnisotropy);
}
samplerCreateInfo.compareEnable = samplerDesc.compareEnabled ? VK_TRUE : VK_FALSE;
samplerCreateInfo.compareOp = Mapping::FromCompareOp(samplerDesc.compareOp);
samplerCreateInfo.minLod = -1000.0f;
samplerCreateInfo.maxLod = 1000.0f;
switch (samplerDesc.borderColor)
{
case Sampler::BorderColor::TRANSPARENT_BLACK:
samplerCreateInfo.borderColor = VK_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK;
break;
case Sampler::BorderColor::OPAQUE_BLACK:
samplerCreateInfo.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_BLACK;
break;
case Sampler::BorderColor::OPAQUE_WHITE:
samplerCreateInfo.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
break;
}
VkSampler sampler = VK_NULL_HANDLE;
ENSURE_VK_SUCCESS(vkCreateSampler(
m_Device->GetVkDevice(), &samplerCreateInfo, nullptr, &sampler));
it = m_SamplerMap.emplace(samplerDesc, sampler).first;
return sampler;
}
} // namespace Vulkan
} // namespace Backend
} // namespace Renderer
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