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// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstring>
#include <optional>
#include <unordered_map>
#include "common/assert.h"
#include "common/cityhash.h"
#include "video_core/renderer_vulkan/declarations.h"
#include "video_core/renderer_vulkan/maxwell_to_vk.h"
#include "video_core/renderer_vulkan/vk_sampler_cache.h"
#include "video_core/textures/texture.h"
namespace Vulkan {
static std::optional<vk::BorderColor> TryConvertBorderColor(std::array<float, 4> color) {
// TODO(Rodrigo): Manage integer border colors
if (color == std::array<float, 4>{0, 0, 0, 0}) {
return vk::BorderColor::eFloatTransparentBlack;
} else if (color == std::array<float, 4>{0, 0, 0, 1}) {
return vk::BorderColor::eFloatOpaqueBlack;
} else if (color == std::array<float, 4>{1, 1, 1, 1}) {
return vk::BorderColor::eFloatOpaqueWhite;
} else {
return {};
}
}
std::size_t SamplerCacheKey::Hash() const {
static_assert(sizeof(raw) % sizeof(u64) == 0);
return static_cast<std::size_t>(
Common::CityHash64(reinterpret_cast<const char*>(raw.data()), sizeof(raw) / sizeof(u64)));
}
bool SamplerCacheKey::operator==(const SamplerCacheKey& rhs) const {
return raw == rhs.raw;
}
VKSamplerCache::VKSamplerCache(const VKDevice& device) : device{device} {}
VKSamplerCache::~VKSamplerCache() = default;
vk::Sampler VKSamplerCache::GetSampler(const Tegra::Texture::TSCEntry& tsc) {
const auto [entry, is_cache_miss] = cache.try_emplace(SamplerCacheKey{tsc});
auto& sampler = entry->second;
if (is_cache_miss) {
sampler = CreateSampler(tsc);
}
return *sampler;
}
UniqueSampler VKSamplerCache::CreateSampler(const Tegra::Texture::TSCEntry& tsc) {
const float max_anisotropy = tsc.GetMaxAnisotropy();
const bool has_anisotropy = max_anisotropy > 1.0f;
const auto border_color = tsc.GetBorderColor();
const auto vk_border_color = TryConvertBorderColor(border_color);
UNIMPLEMENTED_IF_MSG(!vk_border_color, "Unimplemented border color {} {} {} {}",
border_color[0], border_color[1], border_color[2], border_color[3]);
constexpr bool unnormalized_coords = false;
const vk::SamplerCreateInfo sampler_ci(
{}, MaxwellToVK::Sampler::Filter(tsc.mag_filter),
MaxwellToVK::Sampler::Filter(tsc.min_filter),
MaxwellToVK::Sampler::MipmapMode(tsc.mipmap_filter),
MaxwellToVK::Sampler::WrapMode(tsc.wrap_u), MaxwellToVK::Sampler::WrapMode(tsc.wrap_v),
MaxwellToVK::Sampler::WrapMode(tsc.wrap_p), tsc.GetLodBias(), has_anisotropy,
max_anisotropy, tsc.depth_compare_enabled,
MaxwellToVK::Sampler::DepthCompareFunction(tsc.depth_compare_func), tsc.GetMinLod(),
tsc.GetMaxLod(), vk_border_color.value_or(vk::BorderColor::eFloatTransparentBlack),
unnormalized_coords);
const auto& dld = device.GetDispatchLoader();
const auto dev = device.GetLogical();
return dev.createSamplerUnique(sampler_ci, nullptr, dld);
}
} // namespace Vulkan
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