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MobileGL/MobileGL/MG_Backend/DirectVulkan/Renderer/VkRenderPassManager.h
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// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkRenderPassManager.h
// Copyright (c) 2025-2026 MobileGL-Dev
// Licensed under the GNU Lesser General Public License v3.0:
// https://www.gnu.org/licenses/gpl-3.0.txt
// https://www.gnu.org/licenses/lgpl-3.0.txt
// SPDX-License-Identifier: LGPL-3.0-only
// End of Source File Header
#pragma once
#include "SwapchainObject.h"
#include "VkClearManager.h"
#include "VkTextureManager.h"
#include "../VkIncludes.h"
#include "../VulkanRendererConfig.h"
#include "MG_State/GLState/FramebufferState/FramebufferObject.h"
#include <Includes.h>
namespace MobileGL::MG_Backend::DirectVulkan {
struct PendingClearAttachmentInfo {
Uint32 attachmentIndex = 0;
MG_State::GLState::ITextureObject* texture = nullptr;
};
struct RenderPassEntry {
static inline VkDevice s_device;
static inline Vector<VkTextureManager::TextureResource*> s_textureResourcesScratch;
VkRenderPass renderPass = VK_NULL_HANDLE;
VkFramebuffer framebuffer = VK_NULL_HANDLE;
Uint64 compatibilityHash = 0;
Vector<PendingClearAttachmentInfo> pendingClearAttachments;
Uint32 attachmentCount = 0;
IntVec2 extent = {0, 0};
Uint32 subpass = 0;
RenderPassEntry() = default;
RenderPassEntry(const RenderPassEntry&) = delete;
RenderPassEntry(RenderPassEntry&& that) noexcept {
std::swap(renderPass, that.renderPass);
std::swap(framebuffer, that.framebuffer);
std::swap(compatibilityHash, that.compatibilityHash);
std::swap(pendingClearAttachments, that.pendingClearAttachments);
std::swap(attachmentCount, that.attachmentCount);
std::swap(extent, that.extent);
std::swap(subpass, that.subpass);
}
RenderPassEntry(
VkRenderPass renderpass,
VkFramebuffer framebuffer,
Uint64 compatibilityHash,
const Vector<PendingClearAttachmentInfo>& pendingClearAttachments,
Uint32 attachmentCount,
IntVec2 extent, int subpass):
renderPass(renderpass),
framebuffer(framebuffer),
compatibilityHash(compatibilityHash),
pendingClearAttachments(Move(pendingClearAttachments)),
attachmentCount(attachmentCount),
extent(extent),
subpass(subpass)
{}
~RenderPassEntry() {
if (renderPass != VK_NULL_HANDLE) {
vkDestroyRenderPass(s_device, renderPass, nullptr);
}
if (framebuffer != VK_NULL_HANDLE) {
vkDestroyFramebuffer(s_device, framebuffer, nullptr);
}
}
Bool CompatibleWith(const RenderPassEntry& that) {
return this->compatibilityHash == that.compatibilityHash;
}
};
class VkRenderPassManager {
public:
using HashType = Uint64;
VkRenderPassManager(VkDevice device,
const VulkanRendererConfig& config, VkClearManager& clearManager, VkTextureManager& textureManager,
const SwapchainObject& swapchainObject);
~VkRenderPassManager();
Bool Initialize();
void Shutdown();
HashType ComputeHash(
const MG_State::GLState::FramebufferObject& fbo,
Uint32 swapchainImageIndex,
Bool includePendingClear = true) const;
RenderPassEntry& GetOrCreateRenderPass(const MG_State::GLState::FramebufferObject& fbo, Uint32 swapchainImageIndex);
static Bool BeginRenderPass(VkCommandBuffer commandBuffer, RenderPassEntry& renderPassEntry);
static Bool EndRenderPass(VkCommandBuffer commandBuffer);
static RenderPassEntry* GetActiveRenderPass();
private:
VkDevice m_device = VK_NULL_HANDLE;
const VulkanRendererConfig& m_config;
VkClearManager& m_clearManager;
VkTextureManager& m_textureManager;
const SwapchainObject& m_swapchainObject;
UnorderedMap<Uint64, RenderPassEntry> m_renderPasses;
static inline XXH64_state_t* m_hashState = XXH64_createState();
static inline RenderPassEntry* s_activeRenderPass = nullptr;
static inline VkClearManager* s_clearManager = nullptr;
};
} // namespace MobileGL::MG_Backend::DirectVulkan