[Feat] (MG_Backend/DirectVulkan): VkClearManager

CMakeLists.txt

@@ -229,6 +229,7 @@ set(SOURCE_FILES
     MobileGL/MG_Backend/DirectVulkan/Renderer/VkRenderPassManager.cpp
     MobileGL/MG_Backend/DirectVulkan/Renderer/VkTextureManager.cpp
     MobileGL/MG_Backend/DirectVulkan/Renderer/VkSamplerManager.cpp
+    MobileGL/MG_Backend/DirectVulkan/Renderer/VkClearManager.cpp
 
     MobileGL/MG_State/GLState/Core.cpp
     MobileGL/MG_State/GLState/ErrorState/Error.cpp

MobileGL/MG_Backend/DirectVulkan/Renderer/VkClearManager.cpp

@@ -0,0 +1,85 @@
+// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkClearManager.cpp
+// 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
+
+#include "VkClearManager.h"
+
+namespace MobileGL::MG_Backend::DirectVulkan {
+    Bool VkClearManager::Initialize() {
+        return true;
+    }
+
+    void VkClearManager::Shutdown() {
+
+    }
+
+    void VkClearManager::QueueClear(GLbitfield mask, const ClearFramebufferPayload& clearPayload,
+                                    MG_State::GLState::FramebufferObject& drawFbo) {
+        if (mask & GL_COLOR_BUFFER_BIT) {
+            auto& drawbufs = drawFbo.GetDrawBuffers();
+            // This should automatically work on default & offscreen FBO
+            for (auto drawbuf: drawbufs) {
+                if (drawbuf == FramebufferAttachmentType::None ||
+                    drawFbo.GetAttachment(drawbuf).IsRenderbuffer())
+                    continue;
+
+                QueueClear({
+                    .color = clearPayload.color,
+                    .attachmentType = drawbuf
+                }, drawFbo.GetAttachment(drawbuf).GetTexture());
+            }
+        }
+
+        if (mask & GL_DEPTH_BUFFER_BIT &&
+            !drawFbo.GetAttachment(FramebufferAttachmentType::Depth).IsRenderbuffer()) {
+            QueueClear({
+                .depth = clearPayload.depth,
+                .attachmentType = FramebufferAttachmentType::Depth,
+            }, drawFbo.GetAttachment(FramebufferAttachmentType::Depth).GetTexture());
+        }
+
+        if (mask & GL_STENCIL_BUFFER_BIT &&
+            !drawFbo.GetAttachment(FramebufferAttachmentType::Stencil).IsRenderbuffer()) {
+            QueueClear({
+                .stencil = clearPayload.stencil,
+                .attachmentType = FramebufferAttachmentType::Stencil,
+            }, drawFbo.GetAttachment(FramebufferAttachmentType::Depth).GetTexture());
+        }
+    }
+
+    void VkClearManager::QueueClear(const ClearAttachmentPayload& clearPayload,
+                                    const SharedPtr<MG_State::GLState::ITextureObject>& texture) {
+        WeakPtr weakTexturePtr = texture;
+        if (weakTexturePtr.expired())
+            return;
+        auto* pTexture = weakTexturePtr.lock().get();
+        m_aliveObjects[pTexture] = weakTexturePtr;
+        m_pendingClears[pTexture] = clearPayload;
+    }
+
+    Bool VkClearManager::DequeueClear(MG_State::GLState::ITextureObject* texture, ClearAttachmentPayload& outPayload) {
+        if (m_aliveObjects.find(texture) == m_aliveObjects.end())
+            return false;
+
+        outPayload = m_pendingClears[texture];
+        m_aliveObjects.erase(texture);
+        m_pendingClears.erase(texture);
+        return true;
+    }
+
+    SizeT VkClearManager::CollectGarbage() {
+        SizeT count = 0;
+        for (const auto& [raw, weak]: m_aliveObjects) {
+            if (weak.expired()) {
+                count++;
+                m_pendingClears.erase(raw);
+                m_aliveObjects.erase(raw);
+            }
+        }
+        return count;
+    }
+} // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_Backend/DirectVulkan/Renderer/VkClearManager.h

@@ -0,0 +1,49 @@
+// MobileGL - MobileGL/MG_Backend/DirectVulkan/Renderer/VkClearManager.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 "../VulkanRendererConfig.h"
+#include "MG_State/GLState/FramebufferState/FramebufferObject.h"
+#include "MG_Util/Math/VectorTypes.h"
+
+#include <Includes.h>
+
+namespace MobileGL::MG_Backend::DirectVulkan {
+    struct ClearFramebufferPayload {
+        FloatVec4 color;
+        Float depth{};
+        Uint32 stencil{};
+    };
+
+    struct ClearAttachmentPayload {
+        union {
+            FloatVec4 color;
+            Float depth{};
+            Uint32 stencil;
+        };
+        FramebufferAttachmentType attachmentType = FramebufferAttachmentType::Color0;
+    };
+
+    class VkClearManager {
+    public:
+        Bool Initialize();
+        void Shutdown();
+
+        void QueueClear(GLbitfield mask, const ClearFramebufferPayload& clearPayload, MG_State::GLState::FramebufferObject& drawFbo);
+        void QueueClear(
+            const ClearAttachmentPayload& clearPayload,
+            const SharedPtr<MG_State::GLState::ITextureObject>& texture);
+        Bool DequeueClear(MG_State::GLState::ITextureObject* texture, ClearAttachmentPayload& outPayload);
+        SizeT CollectGarbage();
+    private:
+        UnorderedMap<MG_State::GLState::ITextureObject*, ClearAttachmentPayload> m_pendingClears;
+        UnorderedMap<MG_State::GLState::ITextureObject*, WeakPtr<MG_State::GLState::ITextureObject>> m_aliveObjects;
+    };
+} // namespace MobileGL::MG_Backend::DirectVulkan

MobileGL/MG_State/GLState/FramebufferState/FramebufferObject.h

@@ -62,6 +62,7 @@ namespace MobileGL {
         Color29,
         Color30,
         Color31,
+        ColorMax = Color31,
 
         FramebufferAttachmentTypeCount,
         Unknown = -1

MobileGL/MG_Util/Types.h

@@ -42,6 +42,8 @@ namespace MobileGL {
     using SharedPtr = std::shared_ptr<T>;
     template <typename T>
     using UniquePtr = std::unique_ptr<T>;
+    template <typename T>
+    using WeakPtr = std::weak_ptr<T>;
     template <typename T, typename... Args>
     inline SharedPtr<T> MakeShared(Args&&... args) {
         return std::make_shared<T>(std::forward<Args>(args)...);