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Diffstat (limited to 'src/video_core/texture_cache/descriptor_table.h')
-rw-r--r-- | src/video_core/texture_cache/descriptor_table.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/src/video_core/texture_cache/descriptor_table.h b/src/video_core/texture_cache/descriptor_table.h new file mode 100644 index 000000000..3a03b786f --- /dev/null +++ b/src/video_core/texture_cache/descriptor_table.h @@ -0,0 +1,82 @@ +// Copyright 2020 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include <algorithm> +#include <vector> + +#include "common/common_types.h" +#include "common/div_ceil.h" +#include "common/logging/log.h" +#include "video_core/memory_manager.h" +#include "video_core/rasterizer_interface.h" + +namespace VideoCommon { + +template <typename Descriptor> +class DescriptorTable { +public: + explicit DescriptorTable(Tegra::MemoryManager& gpu_memory_) : gpu_memory{gpu_memory_} {} + + [[nodiscard]] bool Synchornize(GPUVAddr gpu_addr, u32 limit) { + [[likely]] if (current_gpu_addr == gpu_addr && current_limit == limit) { + return false; + } + Refresh(gpu_addr, limit); + return true; + } + + void Invalidate() noexcept { + std::ranges::fill(read_descriptors, 0); + } + + [[nodiscard]] std::pair<Descriptor, bool> Read(u32 index) { + DEBUG_ASSERT(index <= current_limit); + const GPUVAddr gpu_addr = current_gpu_addr + index * sizeof(Descriptor); + std::pair<Descriptor, bool> result; + gpu_memory.ReadBlockUnsafe(gpu_addr, &result.first, sizeof(Descriptor)); + if (IsDescriptorRead(index)) { + result.second = result.first != descriptors[index]; + } else { + MarkDescriptorAsRead(index); + result.second = true; + } + if (result.second) { + descriptors[index] = result.first; + } + return result; + } + + [[nodiscard]] u32 Limit() const noexcept { + return current_limit; + } + +private: + void Refresh(GPUVAddr gpu_addr, u32 limit) { + current_gpu_addr = gpu_addr; + current_limit = limit; + + const size_t num_descriptors = static_cast<size_t>(limit) + 1; + read_descriptors.clear(); + read_descriptors.resize(Common::DivCeil(num_descriptors, 64U), 0); + descriptors.resize(num_descriptors); + } + + void MarkDescriptorAsRead(u32 index) noexcept { + read_descriptors[index / 64] |= 1ULL << (index % 64); + } + + [[nodiscard]] bool IsDescriptorRead(u32 index) const noexcept { + return (read_descriptors[index / 64] & (1ULL << (index % 64))) != 0; + } + + Tegra::MemoryManager& gpu_memory; + GPUVAddr current_gpu_addr{}; + u32 current_limit{}; + std::vector<u64> read_descriptors; + std::vector<Descriptor> descriptors; +}; + +} // namespace VideoCommon |