Fix VRAM memory leak when releasing snapshots

src/Compositor.cpp

@@ -852,9 +852,12 @@ void CCompositor::moveWindowToTop(CWindow* pWindow) {
     }
 }
 
-void CCompositor::cleanupFadingOut() {
+void CCompositor::cleanupFadingOut(const int& monid) {
     for (auto& w : m_vWindowsFadingOut) {
 
+        if (w->m_iMonitorID != (long unsigned int)monid)
+            continue;
+
         bool valid = windowExists(w);
 
         if (!valid || !w->m_bFadingOut || w->m_fAlpha.fl() == 0.f) {
@@ -867,11 +870,16 @@ void CCompositor::cleanupFadingOut() {
             m_vWindowsFadingOut.erase(std::remove(m_vWindowsFadingOut.begin(), m_vWindowsFadingOut.end(), w));
 
             Debug::log(LOG, "Cleanup: destroyed a window");
+
+            glFlush();  // to free mem NOW.
             return;
         }
     }
 
     for (auto& ls : m_vSurfacesFadingOut) {
+        if (ls->monitorID != monid)
+            continue;
+
         if (ls->fadingOut && ls->readyToDelete && !ls->alpha.isBeingAnimated()) {
             for (auto& m : m_vMonitors) {
                 for (auto& lsl : m->m_aLayerSurfaceLists) {
@@ -887,6 +895,7 @@ void CCompositor::cleanupFadingOut() {
 
             Debug::log(LOG, "Cleanup: destroyed a layersurface");
 
+            glFlush();  // to free mem NOW.
             return;
         }
     }

src/Compositor.hpp

@@ -124,7 +124,7 @@ public:
     bool                    doesSeatAcceptInput(wlr_surface*);
     bool                    isWindowActive(CWindow*);
     void                    moveWindowToTop(CWindow*);
-    void                    cleanupFadingOut();
+    void                    cleanupFadingOut(const int& monid);
     CWindow*                getWindowInDirection(CWindow*, char);
     void                    deactivateAllWLRWorkspaces(wlr_ext_workspace_handle_v1* exclude = nullptr);
     CWindow*                getNextWindowOnWorkspace(CWindow*);

src/events/Monitors.cpp

@@ -186,7 +186,6 @@ void Events::listener_monitorFrame(void* owner, void* data) {
     if (PMONITOR->ID == pMostHzMonitor->ID || !*PNOVFR) {  // unfortunately with VFR we don't have the guarantee mostHz is going to be updated all the time, so we have to ignore that
         g_pCompositor->sanityCheckWorkspaces();
         g_pAnimationManager->tick();
-        g_pCompositor->cleanupFadingOut();
 
         HyprCtl::tickHyprCtl();  // so that we dont get that race condition multithread bullshit
 
@@ -229,6 +228,9 @@ void Events::listener_monitorFrame(void* owner, void* data) {
         return;
     }
 
+    // we need to cleanup fading out when rendering the appropriate context
+    g_pCompositor->cleanupFadingOut(PMONITOR->ID);
+
     if (!hasChanged && *PDAMAGETRACKINGMODE != DAMAGE_TRACKING_NONE && PMONITOR->forceFullFrames == 0 && damageBlinkCleanup == 0) {
         pixman_region32_fini(&damage);
         wlr_output_rollback(PMONITOR->output);

src/render/Framebuffer.cpp

@@ -3,14 +3,13 @@
 
 bool CFramebuffer::alloc(int w, int h) {
     bool firstAlloc = false;
-    if (m_iFb == (uint32_t)-1)
+    
-    {
+    if (m_iFb == (uint32_t)-1) {
         firstAlloc = true;
         glGenFramebuffers(1, &m_iFb);
     }
 
-    if (m_cTex.m_iTexID == 0)
+    if (m_cTex.m_iTexID == 0)  {
-    {
         firstAlloc = true;
         glGenTextures(1, &m_cTex.m_iTexID);
         glBindTexture(GL_TEXTURE_2D, m_cTex.m_iTexID);
@@ -20,13 +19,11 @@ bool CFramebuffer::alloc(int w, int h) {
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
     }
 
-    if (firstAlloc || m_Size != Vector2D(w, h))
+    if (firstAlloc || m_Size != Vector2D(w, h)) {
-    {
         glBindTexture(GL_TEXTURE_2D, m_cTex.m_iTexID);
         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
 
         glBindFramebuffer(GL_FRAMEBUFFER, m_iFb);
-        glBindTexture(GL_TEXTURE_2D, m_cTex.m_iTexID);
         glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_cTex.m_iTexID, 0);
 
 
@@ -37,7 +34,6 @@ bool CFramebuffer::alloc(int w, int h) {
             glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8, w, h, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, 0);
 
             glBindFramebuffer(GL_FRAMEBUFFER, m_iFb);
-            glBindTexture(GL_TEXTURE_2D, m_pStencilTex->m_iTexID);
 
             glFramebufferTexture2D(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, m_pStencilTex->m_iTexID, 0);
         }
@@ -78,3 +74,7 @@ void CFramebuffer::release() {
     m_cTex.m_iTexID = 0;
     m_iFb = -1;
 }
+
+CFramebuffer::~CFramebuffer() {
+    release();
+}

src/render/Framebuffer.hpp

@@ -6,6 +6,8 @@
 class CFramebuffer {
 public:
 
+    ~CFramebuffer();
+
     bool alloc(int w, int h);
     void bind();
     void release();

src/render/OpenGL.cpp

@@ -702,8 +702,6 @@ void CHyprOpenGLImpl::makeWindowSnapshot(CWindow* pWindow) {
 
     begin(PMONITOR, &fakeDamage, true);
 
-    pixman_region32_fini(&fakeDamage);
-
     clear(CColor(0,0,0,0)); // JIC
 
     timespec now;
@@ -742,9 +740,10 @@ void CHyprOpenGLImpl::makeWindowSnapshot(CWindow* pWindow) {
     #else
     glBindFramebuffer(GL_FRAMEBUFFER, m_iCurrentOutputFb);
     #endif
-
     end();
 
+    pixman_region32_fini(&fakeDamage);
+
     wlr_output_rollback(PMONITOR->output);
 }
 
@@ -762,8 +761,6 @@ void CHyprOpenGLImpl::makeLayerSnapshot(SLayerSurface* pLayer) {
 
     begin(PMONITOR, &fakeDamage, true);
 
-    pixman_region32_fini(&fakeDamage);
-
     const auto PFRAMEBUFFER = &m_mLayerFramebuffers[pLayer];
 
     glViewport(0, 0, g_pHyprOpenGL->m_RenderData.pMonitor->vecPixelSize.x, g_pHyprOpenGL->m_RenderData.pMonitor->vecPixelSize.y);
@@ -792,6 +789,8 @@ void CHyprOpenGLImpl::makeLayerSnapshot(SLayerSurface* pLayer) {
 
     end();
 
+    pixman_region32_fini(&fakeDamage);
+
     wlr_output_rollback(PMONITOR->output);
 }