From 8f948827a69499c0b112043debad35f82a312b6b Mon Sep 17 00:00:00 2001
From: Vaxry <43317083+vaxerski@users.noreply.github.com>
Date: Tue, 8 Jul 2025 12:41:10 +0200
Subject: Renderer: Implement new render scheduling (#10936)

Implements a new render scheduling method, where we triple buffer when necessary.

Enabled by default, improves FPS on underpowered devices.

---------

Co-authored-by: Mihai Fufezan <mihai@fufexan.net>
---
 src/render/Renderer.cpp | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

(limited to 'src/render/Renderer.cpp')

diff --git a/src/render/Renderer.cpp b/src/render/Renderer.cpp
index e85d59b5..da52eaef 100644
--- a/src/render/Renderer.cpp
+++ b/src/render/Renderer.cpp
@@ -1153,7 +1153,7 @@ void CHyprRenderer::calculateUVForSurface(PHLWINDOW pWindow, SP<CWLSurfaceResour
     }
 }
 
-void CHyprRenderer::renderMonitor(PHLMONITOR pMonitor) {
+void CHyprRenderer::renderMonitor(PHLMONITOR pMonitor, bool commit) {
     static std::chrono::high_resolution_clock::time_point renderStart        = std::chrono::high_resolution_clock::now();
     static std::chrono::high_resolution_clock::time_point renderStartOverlay = std::chrono::high_resolution_clock::now();
     static std::chrono::high_resolution_clock::time_point endRenderOverlay   = std::chrono::high_resolution_clock::now();
@@ -1425,7 +1425,8 @@ void CHyprRenderer::renderMonitor(PHLMONITOR pMonitor) {
     pMonitor->m_output->state->setPresentationMode(shouldTear ? Aquamarine::eOutputPresentationMode::AQ_OUTPUT_PRESENTATION_IMMEDIATE :
                                                                 Aquamarine::eOutputPresentationMode::AQ_OUTPUT_PRESENTATION_VSYNC);
 
-    commitPendingAndDoExplicitSync(pMonitor);
+    if (commit)
+        commitPendingAndDoExplicitSync(pMonitor);
 
     if (shouldTear)
         pMonitor->m_tearingState.busy = true;
@@ -2247,12 +2248,10 @@ bool CHyprRenderer::beginRender(PHLMONITOR pMonitor, CRegion& damage, eRenderMod
         return true;
     }
 
-    /* This is a constant expression, as we always use double-buffering in our swapchain
-        TODO: Rewrite the CDamageRing to take advantage of that maybe? It's made to support longer swapchains atm because we used to do wlroots */
-    static constexpr const int HL_BUFFER_AGE = 2;
+    int bufferAge = 0;
 
     if (!buffer) {
-        m_currentBuffer = pMonitor->m_output->swapchain->next(nullptr);
+        m_currentBuffer = pMonitor->m_output->swapchain->next(&bufferAge);
         if (!m_currentBuffer) {
             Debug::log(ERR, "Failed to acquire swapchain buffer for {}", pMonitor->m_name);
             return false;
@@ -2273,7 +2272,7 @@ bool CHyprRenderer::beginRender(PHLMONITOR pMonitor, CRegion& damage, eRenderMod
     }
 
     if (mode == RENDER_MODE_NORMAL) {
-        damage = pMonitor->m_damage.getBufferDamage(HL_BUFFER_AGE);
+        damage = pMonitor->m_damage.getBufferDamage(bufferAge);
         pMonitor->m_damage.rotate();
     }
 
-- 
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