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MobileGL/MobileGL/MG_Backend/DirectVulkan/Renderer/VkFramebufferManager.h
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// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkFramebufferManager.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 "../VkIncludes.h"
#include <Includes.h>
#include <MG_State/GLState/FramebufferState/FramebufferObject.h>
namespace MobileGL::MG_Backend::DirectVulkan {
class VkFramebufferManager {
public:
enum class TransitionResource {
OffscreenColor,
OffscreenDepthStencil,
OffscreenColorTexture
};
enum class TransitionUsage {
Attachment,
TransferSrc,
TransferDst,
General,
ShaderRead
};
struct InitInfo {
VkDevice device = VK_NULL_HANDLE;
VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
};
VkFramebufferManager() = default;
~VkFramebufferManager() = default;
Bool Initialize(const InitInfo& initInfo);
void Shutdown();
Bool EnsureOffscreenColorTarget(Uint glFboExternalIndex, const MG_State::GLState::FramebufferObject& glFbo);
Bool Transition(VkCommandBuffer commandBuffer, TransitionResource resource, TransitionUsage usage,
Uint externalIndex);
Bool GetOffscreenColorImage(Uint glFboExternalIndex, VkImage& outImage, VkExtent2D& outExtent) const;
Bool GetOffscreenDepthStencilImage(Uint glFboExternalIndex, VkImage& outImage, VkExtent2D& outExtent,
VkFormat& outFormat) const;
Bool GetOffscreenColorViewByTexture(Uint textureExternalIndex, VkImageView& outImageView) const;
Bool GetOffscreenRenderSurface(Uint glFboExternalIndex, VkImageView& outColorView, VkFormat& outColorFormat,
VkImageView& outDepthStencilView, VkFormat& outDepthStencilFormat,
VkExtent2D& outExtent) const;
private:
struct OffscreenColorTarget {
VkImage image = VK_NULL_HANDLE;
VkDeviceMemory memory = VK_NULL_HANDLE;
VkImageView imageView = VK_NULL_HANDLE;
VkImageLayout layout = VK_IMAGE_LAYOUT_UNDEFINED;
VkExtent2D extent = {0, 0};
VkFormat format = VK_FORMAT_UNDEFINED;
VkImage depthStencilImage = VK_NULL_HANDLE;
VkDeviceMemory depthStencilMemory = VK_NULL_HANDLE;
VkImageView depthStencilImageView = VK_NULL_HANDLE;
VkImageLayout depthStencilLayout = VK_IMAGE_LAYOUT_UNDEFINED;
VkFormat depthStencilFormat = VK_FORMAT_UNDEFINED;
Uint16 glObjectVersion = 0;
Uint colorTextureExternalIndex = 0;
};
Bool RecreateOffscreenColorTarget(OffscreenColorTarget& target,
const MG_State::GLState::FramebufferObject& glFbo,
const MG_State::GLState::FramebufferAttachmentObject& colorAttachment,
Uint16 glObjectVersion);
void DestroyOffscreenColorTarget(OffscreenColorTarget& target);
static Bool TransitionImageLayout(VkCommandBuffer commandBuffer, VkImage image, VkImageLayout& trackedLayout,
VkImageLayout newLayout, VkPipelineStageFlags srcStageMask,
VkPipelineStageFlags dstStageMask, VkAccessFlags srcAccessMask,
VkAccessFlags dstAccessMask, VkImageAspectFlags aspectMask);
Uint32 FindMemoryType(Uint32 typeFilter, VkMemoryPropertyFlags properties) const;
static VkFormat ResolveColorFormat(const MG_State::GLState::FramebufferAttachmentObject& colorAttachment);
static VkFormat ResolveDepthStencilFormat(
const MG_State::GLState::FramebufferAttachmentObject& depthAttachment,
const MG_State::GLState::FramebufferAttachmentObject& stencilAttachment);
VkFormat FindSupportedDepthStencilFormat(const Vector<VkFormat>& candidates) const;
VkDevice m_device = VK_NULL_HANDLE;
VkPhysicalDevice m_physicalDevice = VK_NULL_HANDLE;
UnorderedMap<Uint, OffscreenColorTarget> m_offscreenColorTargets;
};
} // namespace MobileGL::MG_Backend::DirectVulkan