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// Copyright 2018 The SwiftShader Authors. All Rights Reserved.
//
// 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.
#ifndef VK_SAMPLER_HPP_
#define VK_SAMPLER_HPP_
#include "VkImageView.hpp" // For ResolveIdentityMapping()
#include "Device/Config.hpp"
#include "Device/Memset.hpp"
#include "System/Math.hpp"
#include <atomic>
namespace vk {
struct SamplerState : sw::Memset<SamplerState>
{
SamplerState(const VkSamplerCreateInfo *pCreateInfo, const vk::SamplerYcbcrConversion *ycbcrConversion, VkSamplerFilteringPrecisionModeGOOGLE filteringPrecision);
// Prevents accessing mipmap levels out of range.
static float ClampLod(float lod)
{
return sw::clamp(lod, 0.0f, (float)(sw::MAX_TEXTURE_LOD));
}
const VkFilter magFilter = VK_FILTER_NEAREST;
const VkFilter minFilter = VK_FILTER_NEAREST;
const VkSamplerMipmapMode mipmapMode = VK_SAMPLER_MIPMAP_MODE_NEAREST;
const VkSamplerAddressMode addressModeU = VK_SAMPLER_ADDRESS_MODE_REPEAT;
const VkSamplerAddressMode addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT;
const VkSamplerAddressMode addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
const float mipLodBias = 0.0f;
const VkBool32 anisotropyEnable = VK_FALSE;
const float maxAnisotropy = 0.0f;
const VkBool32 compareEnable = VK_FALSE;
const VkCompareOp compareOp = VK_COMPARE_OP_NEVER;
const float minLod = 0.0f;
const float maxLod = 0.0f;
const VkBorderColor borderColor = VK_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK;
const VkBool32 unnormalizedCoordinates = VK_FALSE;
VkSamplerYcbcrModelConversion ycbcrModel = VK_SAMPLER_YCBCR_MODEL_CONVERSION_RGB_IDENTITY;
const VkSamplerFilteringPrecisionModeGOOGLE filteringPrecision = VK_SAMPLER_FILTERING_PRECISION_MODE_LOW_GOOGLE;
bool studioSwing = false; // Narrow range
bool swappedChroma = false; // Cb/Cr components in reverse order
};
class Sampler : public Object<Sampler, VkSampler>, public SamplerState
{
public:
Sampler(const VkSamplerCreateInfo *pCreateInfo, void *mem, const SamplerState &samplerState, uint32_t samplerID);
static size_t ComputeRequiredAllocationSize(const VkSamplerCreateInfo *pCreateInfo)
{
return 0;
}
const uint32_t id = 0;
};
class SamplerYcbcrConversion : public Object<SamplerYcbcrConversion, VkSamplerYcbcrConversion>
{
public:
SamplerYcbcrConversion(const VkSamplerYcbcrConversionCreateInfo *pCreateInfo, void *mem)
: format(pCreateInfo->format)
, ycbcrModel(pCreateInfo->ycbcrModel)
, ycbcrRange(pCreateInfo->ycbcrRange)
, components(ResolveIdentityMapping(pCreateInfo->components))
, xChromaOffset(pCreateInfo->xChromaOffset)
, yChromaOffset(pCreateInfo->yChromaOffset)
, chromaFilter(pCreateInfo->chromaFilter)
, forceExplicitReconstruction(pCreateInfo->forceExplicitReconstruction)
{
}
~SamplerYcbcrConversion() = default;
static size_t ComputeRequiredAllocationSize(const VkSamplerYcbcrConversionCreateInfo *pCreateInfo)
{
return 0;
}
const VkFormat format = VK_FORMAT_UNDEFINED;
const VkSamplerYcbcrModelConversion ycbcrModel = VK_SAMPLER_YCBCR_MODEL_CONVERSION_RGB_IDENTITY;
const VkSamplerYcbcrRange ycbcrRange = VK_SAMPLER_YCBCR_RANGE_ITU_FULL;
const VkComponentMapping components = { VK_COMPONENT_SWIZZLE_R, VK_COMPONENT_SWIZZLE_G, VK_COMPONENT_SWIZZLE_B, VK_COMPONENT_SWIZZLE_A };
const VkChromaLocation xChromaOffset = VK_CHROMA_LOCATION_COSITED_EVEN;
const VkChromaLocation yChromaOffset = VK_CHROMA_LOCATION_COSITED_EVEN;
const VkFilter chromaFilter = VK_FILTER_NEAREST;
const VkBool32 forceExplicitReconstruction = VK_FALSE;
};
static inline Sampler *Cast(VkSampler object)
{
return Sampler::Cast(object);
}
static inline SamplerYcbcrConversion *Cast(VkSamplerYcbcrConversion object)
{
return SamplerYcbcrConversion::Cast(object);
}
} // namespace vk
#endif // VK_SAMPLER_HPP_