[Feat] (MG_Backend/DirectVulkan): VkClearManager

2026-09-09 12:48:32 +09:00 · 2026-02-25 16:12:33 +08:00
parent 6e7907f183
commit e2e52965df
5 changed files with 139 additions and 1 deletions
@@ -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