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authorShawn Hoffman <godisgovernment@gmail.com>2020-09-15 05:43:41 -0700
committerShawn Hoffman <godisgovernment@gmail.com>2021-01-27 14:29:48 -0800
commitd7fd892fdec4261d4f7c24545bd448e757ca3b0f (patch)
tree356c724fcafc384a1a47d906d89cbfcea112325b /Source/Core/VideoBackends/Vulkan/StreamBuffer.cpp
parentef70fe05bfae4e47f4acb40756d16de0ef1dd259 (diff)
normalize common filenames in VideoBackends/Vulkan
Diffstat (limited to 'Source/Core/VideoBackends/Vulkan/StreamBuffer.cpp')
-rw-r--r--Source/Core/VideoBackends/Vulkan/StreamBuffer.cpp328
1 files changed, 0 insertions, 328 deletions
diff --git a/Source/Core/VideoBackends/Vulkan/StreamBuffer.cpp b/Source/Core/VideoBackends/Vulkan/StreamBuffer.cpp
deleted file mode 100644
index ee86615090..0000000000
--- a/Source/Core/VideoBackends/Vulkan/StreamBuffer.cpp
+++ /dev/null
@@ -1,328 +0,0 @@
-// Copyright 2016 Dolphin Emulator Project
-// Licensed under GPLv2+
-// Refer to the license.txt file included.
-
-#include "VideoBackends/Vulkan/StreamBuffer.h"
-
-#include <algorithm>
-#include <cstdint>
-#include <functional>
-
-#include "Common/Align.h"
-#include "Common/Assert.h"
-#include "Common/MsgHandler.h"
-
-#include "VideoBackends/Vulkan/CommandBufferManager.h"
-#include "VideoBackends/Vulkan/VulkanContext.h"
-
-namespace Vulkan
-{
-StreamBuffer::StreamBuffer(VkBufferUsageFlags usage, u32 size) : m_usage(usage), m_size(size)
-{
-}
-
-StreamBuffer::~StreamBuffer()
-{
- if (m_host_pointer)
- vkUnmapMemory(g_vulkan_context->GetDevice(), m_memory);
-
- if (m_buffer != VK_NULL_HANDLE)
- g_command_buffer_mgr->DeferBufferDestruction(m_buffer);
- if (m_memory != VK_NULL_HANDLE)
- g_command_buffer_mgr->DeferDeviceMemoryDestruction(m_memory);
-}
-
-std::unique_ptr<StreamBuffer> StreamBuffer::Create(VkBufferUsageFlags usage, u32 size)
-{
- std::unique_ptr<StreamBuffer> buffer = std::make_unique<StreamBuffer>(usage, size);
- if (!buffer->AllocateBuffer())
- return nullptr;
-
- return buffer;
-}
-
-bool StreamBuffer::AllocateBuffer()
-{
- // Create the buffer descriptor
- VkBufferCreateInfo buffer_create_info = {
- VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO, // VkStructureType sType
- nullptr, // const void* pNext
- 0, // VkBufferCreateFlags flags
- static_cast<VkDeviceSize>(m_size), // VkDeviceSize size
- m_usage, // VkBufferUsageFlags usage
- VK_SHARING_MODE_EXCLUSIVE, // VkSharingMode sharingMode
- 0, // uint32_t queueFamilyIndexCount
- nullptr // const uint32_t* pQueueFamilyIndices
- };
-
- VkBuffer buffer = VK_NULL_HANDLE;
- VkResult res =
- vkCreateBuffer(g_vulkan_context->GetDevice(), &buffer_create_info, nullptr, &buffer);
- if (res != VK_SUCCESS)
- {
- LOG_VULKAN_ERROR(res, "vkCreateBuffer failed: ");
- return false;
- }
-
- // Get memory requirements (types etc) for this buffer
- VkMemoryRequirements memory_requirements;
- vkGetBufferMemoryRequirements(g_vulkan_context->GetDevice(), buffer, &memory_requirements);
-
- // Aim for a coherent mapping if possible.
- u32 memory_type_index = g_vulkan_context->GetUploadMemoryType(memory_requirements.memoryTypeBits,
- &m_coherent_mapping);
-
- // Allocate memory for backing this buffer
- VkMemoryAllocateInfo memory_allocate_info = {
- VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO, // VkStructureType sType
- nullptr, // const void* pNext
- memory_requirements.size, // VkDeviceSize allocationSize
- memory_type_index // uint32_t memoryTypeIndex
- };
- VkDeviceMemory memory = VK_NULL_HANDLE;
- res = vkAllocateMemory(g_vulkan_context->GetDevice(), &memory_allocate_info, nullptr, &memory);
- if (res != VK_SUCCESS)
- {
- LOG_VULKAN_ERROR(res, "vkAllocateMemory failed: ");
- vkDestroyBuffer(g_vulkan_context->GetDevice(), buffer, nullptr);
- return false;
- }
-
- // Bind memory to buffer
- res = vkBindBufferMemory(g_vulkan_context->GetDevice(), buffer, memory, 0);
- if (res != VK_SUCCESS)
- {
- LOG_VULKAN_ERROR(res, "vkBindBufferMemory failed: ");
- vkDestroyBuffer(g_vulkan_context->GetDevice(), buffer, nullptr);
- vkFreeMemory(g_vulkan_context->GetDevice(), memory, nullptr);
- return false;
- }
-
- // Map this buffer into user-space
- void* mapped_ptr = nullptr;
- res = vkMapMemory(g_vulkan_context->GetDevice(), memory, 0, m_size, 0, &mapped_ptr);
- if (res != VK_SUCCESS)
- {
- LOG_VULKAN_ERROR(res, "vkMapMemory failed: ");
- vkDestroyBuffer(g_vulkan_context->GetDevice(), buffer, nullptr);
- vkFreeMemory(g_vulkan_context->GetDevice(), memory, nullptr);
- return false;
- }
-
- // Unmap current host pointer (if there was a previous buffer)
- if (m_host_pointer)
- vkUnmapMemory(g_vulkan_context->GetDevice(), m_memory);
-
- // Destroy the backings for the buffer after the command buffer executes
- if (m_buffer != VK_NULL_HANDLE)
- g_command_buffer_mgr->DeferBufferDestruction(m_buffer);
- if (m_memory != VK_NULL_HANDLE)
- g_command_buffer_mgr->DeferDeviceMemoryDestruction(m_memory);
-
- // Replace with the new buffer
- m_buffer = buffer;
- m_memory = memory;
- m_host_pointer = reinterpret_cast<u8*>(mapped_ptr);
- m_current_offset = 0;
- m_current_gpu_position = 0;
- m_tracked_fences.clear();
- return true;
-}
-
-bool StreamBuffer::ReserveMemory(u32 num_bytes, u32 alignment)
-{
- const u32 required_bytes = num_bytes + alignment;
-
- // Check for sane allocations
- if (required_bytes > m_size)
- {
- PanicAlertFmt("Attempting to allocate {} bytes from a {} byte stream buffer", num_bytes,
- m_size);
-
- return false;
- }
-
- // Is the GPU behind or up to date with our current offset?
- UpdateCurrentFencePosition();
- if (m_current_offset >= m_current_gpu_position)
- {
- const u32 remaining_bytes = m_size - m_current_offset;
- if (required_bytes <= remaining_bytes)
- {
- // Place at the current position, after the GPU position.
- m_current_offset = Common::AlignUp(m_current_offset, alignment);
- m_last_allocation_size = num_bytes;
- return true;
- }
-
- // Check for space at the start of the buffer
- // We use < here because we don't want to have the case of m_current_offset ==
- // m_current_gpu_position. That would mean the code above would assume the
- // GPU has caught up to us, which it hasn't.
- if (required_bytes < m_current_gpu_position)
- {
- // Reset offset to zero, since we're allocating behind the gpu now
- m_current_offset = 0;
- m_last_allocation_size = num_bytes;
- return true;
- }
- }
-
- // Is the GPU ahead of our current offset?
- if (m_current_offset < m_current_gpu_position)
- {
- // We have from m_current_offset..m_current_gpu_position space to use.
- const u32 remaining_bytes = m_current_gpu_position - m_current_offset;
- if (required_bytes < remaining_bytes)
- {
- // Place at the current position, since this is still behind the GPU.
- m_current_offset = Common::AlignUp(m_current_offset, alignment);
- m_last_allocation_size = num_bytes;
- return true;
- }
- }
-
- // Can we find a fence to wait on that will give us enough memory?
- if (WaitForClearSpace(required_bytes))
- {
- m_current_offset = Common::AlignUp(m_current_offset, alignment);
- m_last_allocation_size = num_bytes;
- return true;
- }
-
- // We tried everything we could, and still couldn't get anything. This means that too much space
- // in the buffer is being used by the command buffer currently being recorded. Therefore, the
- // only option is to execute it, and wait until it's done.
- return false;
-}
-
-void StreamBuffer::CommitMemory(u32 final_num_bytes)
-{
- ASSERT((m_current_offset + final_num_bytes) <= m_size);
- ASSERT(final_num_bytes <= m_last_allocation_size);
-
- // For non-coherent mappings, flush the memory range
- if (!m_coherent_mapping)
- {
- VkMappedMemoryRange range = {VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE, nullptr, m_memory,
- m_current_offset, final_num_bytes};
- vkFlushMappedMemoryRanges(g_vulkan_context->GetDevice(), 1, &range);
- }
-
- m_current_offset += final_num_bytes;
-}
-
-void StreamBuffer::UpdateCurrentFencePosition()
-{
- // Don't create a tracking entry if the GPU is caught up with the buffer.
- if (m_current_offset == m_current_gpu_position)
- return;
-
- // Has the offset changed since the last fence?
- const u64 counter = g_command_buffer_mgr->GetCurrentFenceCounter();
- if (!m_tracked_fences.empty() && m_tracked_fences.back().first == counter)
- {
- // Still haven't executed a command buffer, so just update the offset.
- m_tracked_fences.back().second = m_current_offset;
- return;
- }
-
- // New buffer, so update the GPU position while we're at it.
- UpdateGPUPosition();
- m_tracked_fences.emplace_back(counter, m_current_offset);
-}
-
-void StreamBuffer::UpdateGPUPosition()
-{
- auto start = m_tracked_fences.begin();
- auto end = start;
-
- const u64 completed_counter = g_command_buffer_mgr->GetCompletedFenceCounter();
- while (end != m_tracked_fences.end() && completed_counter >= end->first)
- {
- m_current_gpu_position = end->second;
- ++end;
- }
-
- if (start != end)
- m_tracked_fences.erase(start, end);
-}
-
-bool StreamBuffer::WaitForClearSpace(u32 num_bytes)
-{
- u32 new_offset = 0;
- u32 new_gpu_position = 0;
-
- auto iter = m_tracked_fences.begin();
- for (; iter != m_tracked_fences.end(); ++iter)
- {
- // Would this fence bring us in line with the GPU?
- // This is the "last resort" case, where a command buffer execution has been forced
- // after no additional data has been written to it, so we can assume that after the
- // fence has been signaled the entire buffer is now consumed.
- u32 gpu_position = iter->second;
- if (m_current_offset == gpu_position)
- {
- new_offset = 0;
- new_gpu_position = 0;
- break;
- }
-
- // Assuming that we wait for this fence, are we allocating in front of the GPU?
- if (m_current_offset > gpu_position)
- {
- // This would suggest the GPU has now followed us and wrapped around, so we have from
- // m_current_position..m_size free, as well as and 0..gpu_position.
- const u32 remaining_space_after_offset = m_size - m_current_offset;
- if (remaining_space_after_offset >= num_bytes)
- {
- // Switch to allocating in front of the GPU, using the remainder of the buffer.
- new_offset = m_current_offset;
- new_gpu_position = gpu_position;
- break;
- }
-
- // We can wrap around to the start, behind the GPU, if there is enough space.
- // We use > here because otherwise we'd end up lining up with the GPU, and then the
- // allocator would assume that the GPU has consumed what we just wrote.
- if (gpu_position > num_bytes)
- {
- new_offset = 0;
- new_gpu_position = gpu_position;
- break;
- }
- }
- else
- {
- // We're currently allocating behind the GPU. This would give us between the current
- // offset and the GPU position worth of space to work with. Again, > because we can't
- // align the GPU position with the buffer offset.
- u32 available_space_inbetween = gpu_position - m_current_offset;
- if (available_space_inbetween > num_bytes)
- {
- // Leave the offset as-is, but update the GPU position.
- new_offset = m_current_offset;
- new_gpu_position = gpu_position;
- break;
- }
- }
- }
-
- // Did any fences satisfy this condition?
- // Has the command buffer been executed yet? If not, the caller should execute it.
- if (iter == m_tracked_fences.end() ||
- iter->first == g_command_buffer_mgr->GetCurrentFenceCounter())
- {
- return false;
- }
-
- // Wait until this fence is signaled. This will fire the callback, updating the GPU position.
- g_command_buffer_mgr->WaitForFenceCounter(iter->first);
- m_tracked_fences.erase(m_tracked_fences.begin(),
- m_current_offset == iter->second ? m_tracked_fences.end() : ++iter);
- m_current_offset = new_offset;
- m_current_gpu_position = new_gpu_position;
- return true;
-}
-
-} // namespace Vulkan