From 35c105a108d85465046b0f472ef5708b4a143266 Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Thu, 28 Feb 2019 00:49:28 -0300 Subject: vk_buffer_cache: Implement a buffer cache This buffer cache is just like OpenGL's buffer cache with some minor style changes. It uses VKStreamBuffer. --- src/video_core/CMakeLists.txt | 2 + src/video_core/renderer_vulkan/vk_buffer_cache.cpp | 116 +++++++++++++++++++++ src/video_core/renderer_vulkan/vk_buffer_cache.h | 87 ++++++++++++++++ 3 files changed, 205 insertions(+) create mode 100644 src/video_core/renderer_vulkan/vk_buffer_cache.cpp create mode 100644 src/video_core/renderer_vulkan/vk_buffer_cache.h (limited to 'src/video_core') diff --git a/src/video_core/CMakeLists.txt b/src/video_core/CMakeLists.txt index 60529323e..3e9d2b3be 100644 --- a/src/video_core/CMakeLists.txt +++ b/src/video_core/CMakeLists.txt @@ -104,6 +104,8 @@ add_library(video_core STATIC if (ENABLE_VULKAN) target_sources(video_core PRIVATE renderer_vulkan/declarations.h + renderer_vulkan/vk_buffer_cache.cpp + renderer_vulkan/vk_buffer_cache.h renderer_vulkan/vk_device.cpp renderer_vulkan/vk_device.h renderer_vulkan/vk_memory_manager.cpp diff --git a/src/video_core/renderer_vulkan/vk_buffer_cache.cpp b/src/video_core/renderer_vulkan/vk_buffer_cache.cpp new file mode 100644 index 000000000..18b7b94a1 --- /dev/null +++ b/src/video_core/renderer_vulkan/vk_buffer_cache.cpp @@ -0,0 +1,116 @@ +// Copyright 2019 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include +#include +#include +#include + +#include "common/alignment.h" +#include "core/core.h" +#include "core/memory.h" +#include "video_core/renderer_vulkan/declarations.h" +#include "video_core/renderer_vulkan/vk_buffer_cache.h" +#include "video_core/renderer_vulkan/vk_scheduler.h" +#include "video_core/renderer_vulkan/vk_stream_buffer.h" + +namespace Vulkan { + +VKBufferCache::VKBufferCache(Tegra::MemoryManager& tegra_memory_manager, + VideoCore::RasterizerInterface& rasterizer, const VKDevice& device, + VKMemoryManager& memory_manager, VKScheduler& scheduler, u64 size) + : RasterizerCache{rasterizer}, tegra_memory_manager{tegra_memory_manager} { + const auto usage = vk::BufferUsageFlagBits::eVertexBuffer | + vk::BufferUsageFlagBits::eIndexBuffer | + vk::BufferUsageFlagBits::eUniformBuffer; + const auto access = vk::AccessFlagBits::eVertexAttributeRead | vk::AccessFlagBits::eIndexRead | + vk::AccessFlagBits::eUniformRead; + stream_buffer = + std::make_unique(device, memory_manager, scheduler, size, usage, access, + vk::PipelineStageFlagBits::eAllCommands); + buffer_handle = stream_buffer->GetBuffer(); +} + +VKBufferCache::~VKBufferCache() = default; + +u64 VKBufferCache::UploadMemory(Tegra::GPUVAddr gpu_addr, std::size_t size, u64 alignment, + bool cache) { + const auto cpu_addr{tegra_memory_manager.GpuToCpuAddress(gpu_addr)}; + ASSERT(cpu_addr); + + // Cache management is a big overhead, so only cache entries with a given size. + // TODO: Figure out which size is the best for given games. + cache &= size >= 2048; + + if (cache) { + if (auto entry = TryGet(*cpu_addr); entry) { + if (entry->size >= size && entry->alignment == alignment) { + return entry->offset; + } + Unregister(entry); + } + } + + AlignBuffer(alignment); + const u64 uploaded_offset = buffer_offset; + + Memory::ReadBlock(*cpu_addr, buffer_ptr, size); + + buffer_ptr += size; + buffer_offset += size; + + if (cache) { + auto entry = std::make_shared(); + entry->offset = uploaded_offset; + entry->size = size; + entry->alignment = alignment; + entry->addr = *cpu_addr; + Register(entry); + } + + return uploaded_offset; +} + +u64 VKBufferCache::UploadHostMemory(const u8* raw_pointer, std::size_t size, u64 alignment) { + AlignBuffer(alignment); + std::memcpy(buffer_ptr, raw_pointer, size); + const u64 uploaded_offset = buffer_offset; + + buffer_ptr += size; + buffer_offset += size; + return uploaded_offset; +} + +std::tuple VKBufferCache::ReserveMemory(std::size_t size, u64 alignment) { + AlignBuffer(alignment); + u8* const uploaded_ptr = buffer_ptr; + const u64 uploaded_offset = buffer_offset; + + buffer_ptr += size; + buffer_offset += size; + return {uploaded_ptr, uploaded_offset}; +} + +void VKBufferCache::Reserve(std::size_t max_size) { + bool invalidate; + std::tie(buffer_ptr, buffer_offset_base, invalidate) = stream_buffer->Reserve(max_size); + buffer_offset = buffer_offset_base; + + if (invalidate) { + InvalidateAll(); + } +} + +VKExecutionContext VKBufferCache::Send(VKExecutionContext exctx) { + return stream_buffer->Send(exctx, buffer_offset - buffer_offset_base); +} + +void VKBufferCache::AlignBuffer(std::size_t alignment) { + // Align the offset, not the mapped pointer + const u64 offset_aligned = Common::AlignUp(buffer_offset, alignment); + buffer_ptr += offset_aligned - buffer_offset; + buffer_offset = offset_aligned; +} + +} // namespace Vulkan diff --git a/src/video_core/renderer_vulkan/vk_buffer_cache.h b/src/video_core/renderer_vulkan/vk_buffer_cache.h new file mode 100644 index 000000000..6cbe21202 --- /dev/null +++ b/src/video_core/renderer_vulkan/vk_buffer_cache.h @@ -0,0 +1,87 @@ +// Copyright 2019 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include +#include + +#include "common/common_types.h" +#include "video_core/gpu.h" +#include "video_core/rasterizer_cache.h" +#include "video_core/renderer_vulkan/declarations.h" +#include "video_core/renderer_vulkan/vk_scheduler.h" + +namespace Tegra { +class MemoryManager; +} + +namespace Vulkan { + +class VKDevice; +class VKFence; +class VKMemoryManager; +class VKStreamBuffer; + +struct CachedBufferEntry final : public RasterizerCacheObject { + VAddr GetAddr() const override { + return addr; + } + + std::size_t GetSizeInBytes() const override { + return size; + } + + // We do not have to flush this cache as things in it are never modified by us. + void Flush() override {} + + VAddr addr; + std::size_t size; + u64 offset; + std::size_t alignment; +}; + +class VKBufferCache final : public RasterizerCache> { +public: + explicit VKBufferCache(Tegra::MemoryManager& tegra_memory_manager, VideoCore::RasterizerInterface& rasterizer, + const VKDevice& device, VKMemoryManager& memory_manager, + VKScheduler& scheduler, u64 size); + ~VKBufferCache(); + + /// Uploads data from a guest GPU address. Returns host's buffer offset where it's been + /// allocated. + u64 UploadMemory(Tegra::GPUVAddr gpu_addr, std::size_t size, u64 alignment = 4, + bool cache = true); + + /// Uploads from a host memory. Returns host's buffer offset where it's been allocated. + u64 UploadHostMemory(const u8* raw_pointer, std::size_t size, u64 alignment = 4); + + /// Reserves memory to be used by host's CPU. Returns mapped address and offset. + std::tuple ReserveMemory(std::size_t size, u64 alignment = 4); + + /// Reserves a region of memory to be used in subsequent upload/reserve operations. + void Reserve(std::size_t max_size); + + /// Ensures that the set data is sent to the device. + [[nodiscard]] VKExecutionContext Send(VKExecutionContext exctx); + + /// Returns the buffer cache handle. + vk::Buffer GetBuffer() const { + return buffer_handle; + } + +private: + void AlignBuffer(std::size_t alignment); + + Tegra::MemoryManager& tegra_memory_manager; + + std::unique_ptr stream_buffer; + vk::Buffer buffer_handle; + + u8* buffer_ptr = nullptr; + u64 buffer_offset = 0; + u64 buffer_offset_base = 0; +}; + +} // namespace Vulkan -- cgit v1.2.3