mirror of
https://github.com/hrydgard/ppsspp.git
synced 2025-04-02 11:01:50 -04:00
135 lines
3.8 KiB
C++
135 lines
3.8 KiB
C++
// Copyright (c) 2016- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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// Additionally, Common/Vulkan/* , including this file, are also licensed
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// under the public domain.
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#include "Common/Math/math_util.h"
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#include "Common/Log.h"
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#include "Common/TimeUtil.h"
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#include "Common/GPU/Vulkan/VulkanMemory.h"
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using namespace PPSSPP_VK;
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VulkanPushBuffer::VulkanPushBuffer(VulkanContext *vulkan, size_t size, VkBufferUsageFlags usage, PushBufferType type)
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: vulkan_(vulkan), size_(size), usage_(usage), type_(type) {
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bool res = AddBuffer();
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_assert_(res);
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}
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VulkanPushBuffer::~VulkanPushBuffer() {
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_assert_(buffers_.empty());
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}
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bool VulkanPushBuffer::AddBuffer() {
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BufInfo info;
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VkDevice device = vulkan_->GetDevice();
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VkBufferCreateInfo b{ VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
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b.size = size_;
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b.flags = 0;
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b.usage = usage_;
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b.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
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b.queueFamilyIndexCount = 0;
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b.pQueueFamilyIndices = nullptr;
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VmaAllocationCreateInfo allocCreateInfo{};
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allocCreateInfo.usage = type_ == PushBufferType::CPU_TO_GPU ? VMA_MEMORY_USAGE_CPU_TO_GPU : VMA_MEMORY_USAGE_GPU_ONLY;
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VmaAllocationInfo allocInfo{};
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VkResult res = vmaCreateBuffer(vulkan_->Allocator(), &b, &allocCreateInfo, &info.buffer, &info.allocation, &allocInfo);
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if (VK_SUCCESS != res) {
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_assert_msg_(false, "vkCreateBuffer failed! result=%d", (int)res);
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return false;
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}
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buffers_.push_back(info);
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buf_ = buffers_.size() - 1;
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return true;
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}
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void VulkanPushBuffer::Destroy(VulkanContext *vulkan) {
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for (BufInfo &info : buffers_) {
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vulkan->Delete().QueueDeleteBufferAllocation(info.buffer, info.allocation);
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}
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buffers_.clear();
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}
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void VulkanPushBuffer::NextBuffer(size_t minSize) {
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// First, unmap the current memory.
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if (type_ == PushBufferType::CPU_TO_GPU)
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Unmap();
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buf_++;
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if (buf_ >= buffers_.size() || minSize > size_) {
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// Before creating the buffer, adjust to the new size_ if necessary.
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while (size_ < minSize) {
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size_ <<= 1;
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}
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bool res = AddBuffer();
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_assert_(res);
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if (!res) {
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// Let's try not to crash at least?
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buf_ = 0;
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}
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}
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// Now, move to the next buffer and map it.
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offset_ = 0;
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if (type_ == PushBufferType::CPU_TO_GPU)
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Map();
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}
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void VulkanPushBuffer::Defragment(VulkanContext *vulkan) {
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if (buffers_.size() <= 1) {
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return;
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}
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// Okay, we have more than one. Destroy them all and start over with a larger one.
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size_t newSize = size_ * buffers_.size();
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Destroy(vulkan);
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size_ = newSize;
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bool res = AddBuffer();
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_assert_(res);
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}
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size_t VulkanPushBuffer::GetTotalSize() const {
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size_t sum = 0;
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if (buffers_.size() > 1)
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sum += size_ * (buffers_.size() - 1);
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sum += offset_;
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return sum;
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}
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void VulkanPushBuffer::Map() {
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_dbg_assert_(!writePtr_);
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VkResult res = vmaMapMemory(vulkan_->Allocator(), buffers_[buf_].allocation, (void **)(&writePtr_));
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_dbg_assert_(writePtr_);
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_assert_(VK_SUCCESS == res);
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}
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void VulkanPushBuffer::Unmap() {
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_dbg_assert_msg_(writePtr_ != nullptr, "VulkanPushBuffer::Unmap: writePtr_ null here means we have a bug (map/unmap mismatch)");
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if (!writePtr_)
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return;
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vmaUnmapMemory(vulkan_->Allocator(), buffers_[buf_].allocation);
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writePtr_ = nullptr;
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}
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