From c5fd5771814958ad274ea9abb961fff621a35b9c Mon Sep 17 00:00:00 2001
From: Vaxry <43317083+vaxerski@users.noreply.github.com>
Date: Fri, 30 Aug 2024 17:37:52 +0200
Subject: config: Add a window rule to render while unfocused (#7582)

---
 src/render/Renderer.cpp | 50 +++++++++++++++++++++++++++++++++++++++++++++++++
 src/render/Renderer.hpp |  4 ++++
 2 files changed, 54 insertions(+)

(limited to 'src/render')

diff --git a/src/render/Renderer.cpp b/src/render/Renderer.cpp
index 420f8d4c..c5866e4a 100644
--- a/src/render/Renderer.cpp
+++ b/src/render/Renderer.cpp
@@ -97,6 +97,44 @@ CHyprRenderer::CHyprRenderer() {
 
     m_pCursorTicker = wl_event_loop_add_timer(g_pCompositor->m_sWLEventLoop, cursorTicker, nullptr);
     wl_event_source_timer_update(m_pCursorTicker, 500);
+
+    m_tRenderUnfocusedTimer = makeShared<CEventLoopTimer>(
+        std::nullopt,
+        [this](SP<CEventLoopTimer> self, void* data) {
+            static auto PFPS = CConfigValue<Hyprlang::INT>("misc:render_unfocused_fps");
+
+            if (m_vRenderUnfocused.empty())
+                return;
+
+            timespec now;
+            clock_gettime(CLOCK_MONOTONIC, &now);
+
+            bool dirty = false;
+            for (auto& w : m_vRenderUnfocused) {
+                if (!w) {
+                    dirty = true;
+                    continue;
+                }
+
+                if (!w->m_pWLSurface || !w->m_pWLSurface->resource() || shouldRenderWindow(w.lock()))
+                    continue;
+
+                w->m_pWLSurface->resource()->frame(&now);
+                auto FEEDBACK = makeShared<CQueuedPresentationData>(w->m_pWLSurface->resource());
+                FEEDBACK->attachMonitor(g_pCompositor->m_pLastMonitor.lock());
+                FEEDBACK->discarded();
+                PROTO::presentation->queueData(FEEDBACK);
+            }
+
+            if (dirty)
+                std::erase_if(m_vRenderUnfocused, [](const auto& e) { return !e || !e->m_sWindowData.renderUnfocused.valueOr(false); });
+
+            if (!m_vRenderUnfocused.empty())
+                m_tRenderUnfocusedTimer->updateTimeout(std::chrono::milliseconds(1000 / *PFPS));
+        },
+        nullptr);
+
+    g_pEventLoopManager->addTimer(m_tRenderUnfocusedTimer);
 }
 
 CHyprRenderer::~CHyprRenderer() {
@@ -2800,3 +2838,15 @@ SExplicitSyncSettings CHyprRenderer::getExplicitSyncSettings() {
 
     return settings;
 }
+
+void CHyprRenderer::addWindowToRenderUnfocused(PHLWINDOW window) {
+    static auto PFPS = CConfigValue<Hyprlang::INT>("misc:render_unfocused_fps");
+
+    if (std::find(m_vRenderUnfocused.begin(), m_vRenderUnfocused.end(), window) != m_vRenderUnfocused.end())
+        return;
+
+    m_vRenderUnfocused.emplace_back(window);
+
+    if (!m_tRenderUnfocusedTimer->armed())
+        m_tRenderUnfocusedTimer->updateTimeout(std::chrono::milliseconds(1000 / *PFPS));
+}
diff --git a/src/render/Renderer.hpp b/src/render/Renderer.hpp
index d00c0a17..b730d589 100644
--- a/src/render/Renderer.hpp
+++ b/src/render/Renderer.hpp
@@ -13,6 +13,7 @@ class CWorkspace;
 class CWindow;
 class CInputPopup;
 class IHLBuffer;
+class CEventLoopTimer;
 
 // TODO: add fuller damage tracking for updating only parts of a window
 enum DAMAGETRACKINGMODES {
@@ -78,6 +79,7 @@ class CHyprRenderer {
     void                            makeEGLCurrent();
     void                            unsetEGL();
     SExplicitSyncSettings           getExplicitSyncSettings();
+    void                            addWindowToRenderUnfocused(PHLWINDOW window);
 
     // if RENDER_MODE_NORMAL, provided damage will be written to.
     // otherwise, it will be the one used.
@@ -143,6 +145,8 @@ class CHyprRenderer {
 
     SP<CRenderbuffer>              getOrCreateRenderbuffer(SP<Aquamarine::IBuffer> buffer, uint32_t fmt);
     std::vector<SP<CRenderbuffer>> m_vRenderbuffers;
+    std::vector<PHLWINDOWREF>      m_vRenderUnfocused;
+    SP<CEventLoopTimer>            m_tRenderUnfocusedTimer;
 
     friend class CHyprOpenGLImpl;
     friend class CToplevelExportFrame;
-- 
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