From afd5caa26a2352c912e1a1976b59e1f89773cdec Mon Sep 17 00:00:00 2001
From: ROllerozxa <rollerozxa@voxelmanip.se>
Date: Sun, 25 Dec 2022 16:57:39 +0100
Subject: [PATCH] Fully remove pageflip 3D mode (#13074)

---
 builtin/settingtypes.txt       | 3 +--
 src/client/game.cpp            | 6 +-----
 src/client/renderingengine.cpp | 4 ----
 3 files changed, 2 insertions(+), 11 deletions(-)

diff --git a/builtin/settingtypes.txt b/builtin/settingtypes.txt
index df75be6b0..d2b093cc3 100644
--- a/builtin/settingtypes.txt
+++ b/builtin/settingtypes.txt
@@ -208,9 +208,8 @@ enable_particles (Digging particles) bool true
 #    -    topbottom: split screen top/bottom.
 #    -    sidebyside: split screen side by side.
 #    -    crossview: Cross-eyed 3d
-#    -    pageflip: quadbuffer based 3d.
 #    Note that the interlaced mode requires shaders to be enabled.
-3d_mode (3D mode) enum none none,anaglyph,interlaced,topbottom,sidebyside,crossview,pageflip
+3d_mode (3D mode) enum none none,anaglyph,interlaced,topbottom,sidebyside,crossview
 
 #    Strength of 3D mode parallax.
 3d_paralax_strength (3D mode parallax strength) float 0.025 -0.087 0.087
diff --git a/src/client/game.cpp b/src/client/game.cpp
index e7fc31774..486ab41a3 100644
--- a/src/client/game.cpp
+++ b/src/client/game.cpp
@@ -1258,11 +1258,7 @@ void Game::run()
 void Game::shutdown()
 {
 	m_rendering_engine->finalize();
-#if IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR <= 8
-	if (g_settings->get("3d_mode") == "pageflip") {
-		driver->setRenderTarget(irr::video::ERT_STEREO_BOTH_BUFFERS);
-	}
-#endif
+
 	auto formspec = m_game_ui->getFormspecGUI();
 	if (formspec)
 		formspec->quitMenu();
diff --git a/src/client/renderingengine.cpp b/src/client/renderingengine.cpp
index b6b8619ab..ec7a05338 100644
--- a/src/client/renderingengine.cpp
+++ b/src/client/renderingengine.cpp
@@ -98,9 +98,6 @@ RenderingEngine::RenderingEngine(IEventReceiver *receiver)
 	bool vsync = g_settings->getBool("vsync");
 	u16 fsaa = g_settings->getU16("fsaa");
 
-	// stereo buffer required for pageflip stereo
-	bool stereo_buffer = g_settings->get("3d_mode") == "pageflip";
-
 	// Determine driver
 	video::E_DRIVER_TYPE driverType = video::EDT_OPENGL;
 	const std::string &driverstring = g_settings->get("video_driver");
@@ -128,7 +125,6 @@ RenderingEngine::RenderingEngine(IEventReceiver *receiver)
 	params.AntiAlias = fsaa;
 	params.Fullscreen = fullscreen;
 	params.Stencilbuffer = false;
-	params.Stereobuffer = stereo_buffer;
 	params.Vsync = vsync;
 	params.EventReceiver = receiver;
 	params.HighPrecisionFPU = true;