From 0f9245ff330f44551b3310d939f17926e9eb7446 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Mon, 13 Jan 2025 23:56:37 +0100
Subject: [PATCH] [d3d9,d3d11] Remove numBackBuffers option

Useless.
---
 dxvk.conf                   | 15 +++------------
 src/d3d11/d3d11_options.cpp |  1 -
 src/d3d11/d3d11_options.h   |  4 ----
 src/d3d9/d3d9_options.cpp   |  1 -
 src/d3d9/d3d9_options.h     |  4 ----
 5 files changed, 3 insertions(+), 22 deletions(-)

diff --git a/dxvk.conf b/dxvk.conf
index 68d51a46c..d8ff2989a 100644
--- a/dxvk.conf
+++ b/dxvk.conf
@@ -140,15 +140,6 @@
 # dxgi.maxSharedMemory = 0
 
 
-# Override back buffer count for the Vulkan swap chain.
-# Setting this to 0 or less will have no effect.
-#
-# Supported values: Any number greater than or equal to 2.
-
-# dxgi.numBackBuffers = 0
-# d3d9.numBackBuffers = 0
-
-
 # Overrides synchronization interval (Vsync) for presentation.
 # Setting this to 0 disables vertical synchronization entirely.
 # A positive value 'n' will enable Vsync and repeat the same
@@ -160,10 +151,10 @@
 # d3d9.presentInterval = -1
 
 
+# Controls tearing behaviour with regards to in-game Vsync settings.
+#
 # True enables the mailbox present mode in case regular Vsync is disabled.
-# This should avoid tearing, but may be unsupported on some systems
-# or require setting dxgi.numBackBuffers to a higher value in order
-# to work properly. 
+# This eliminates tearing, but may be unsupported on some systems.
 #
 # False enables the relaxed fifo present mode in case regular Vsync is enabled.
 # This should result in tearing but reduce stutter if FPS are too low,
diff --git a/src/d3d11/d3d11_options.cpp b/src/d3d11/d3d11_options.cpp
index a173f9f8d..da8e2ca55 100644
--- a/src/d3d11/d3d11_options.cpp
+++ b/src/d3d11/d3d11_options.cpp
@@ -28,7 +28,6 @@ namespace dxvk {
     this->disableMsaa           = config.getOption<bool>("d3d11.disableMsaa", false);
     this->enableContextLock     = config.getOption<bool>("d3d11.enableContextLock", false);
     this->deferSurfaceCreation  = config.getOption<bool>("dxgi.deferSurfaceCreation", false);
-    this->numBackBuffers        = config.getOption<int32_t>("dxgi.numBackBuffers", 0);
     this->maxFrameLatency       = config.getOption<int32_t>("dxgi.maxFrameLatency", 0);
     this->exposeDriverCommandLists = config.getOption<bool>("d3d11.exposeDriverCommandLists", true);
     this->reproducibleCommandStream = config.getOption<bool>("d3d11.reproducibleCommandStream", false);
diff --git a/src/d3d11/d3d11_options.h b/src/d3d11/d3d11_options.h
index 4d8a84638..f41979d56 100644
--- a/src/d3d11/d3d11_options.h
+++ b/src/d3d11/d3d11_options.h
@@ -72,10 +72,6 @@ namespace dxvk {
     /// Enable float control bits
     bool floatControls = true;
 
-    /// Back buffer count for the Vulkan swap chain.
-    /// Overrides DXGI_SWAP_CHAIN_DESC::BufferCount.
-    int32_t numBackBuffers = 0;
-
     /// Override maximum frame latency if the app specifies
     /// a higher value. May help with frame timing issues.
     int32_t maxFrameLatency = 0;
diff --git a/src/d3d9/d3d9_options.cpp b/src/d3d9/d3d9_options.cpp
index e535d610c..1b66699c7 100644
--- a/src/d3d9/d3d9_options.cpp
+++ b/src/d3d9/d3d9_options.cpp
@@ -49,7 +49,6 @@ namespace dxvk {
     this->strictConstantCopies          = config.getOption<bool>        ("d3d9.strictConstantCopies",          false);
     this->strictPow                     = config.getOption<bool>        ("d3d9.strictPow",                     true);
     this->lenientClear                  = config.getOption<bool>        ("d3d9.lenientClear",                  false);
-    this->numBackBuffers                = config.getOption<int32_t>     ("d3d9.numBackBuffers",                0);
     this->deferSurfaceCreation          = config.getOption<bool>        ("d3d9.deferSurfaceCreation",          false);
     this->samplerAnisotropy             = config.getOption<int32_t>     ("d3d9.samplerAnisotropy",             -1);
     this->maxAvailableMemory            = config.getOption<int32_t>     ("d3d9.maxAvailableMemory",            4096);
diff --git a/src/d3d9/d3d9_options.h b/src/d3d9/d3d9_options.h
index 7339f8cbb..4d733880f 100644
--- a/src/d3d9/d3d9_options.h
+++ b/src/d3d9/d3d9_options.h
@@ -50,10 +50,6 @@ namespace dxvk {
     /// Whether or not to do a fast path clear if we're close enough to the whole render target.
     bool lenientClear;
 
-    /// Back buffer count for the Vulkan swap chain.
-    /// Overrides buffer count in present parameters.
-    int32_t numBackBuffers;
-
     /// Defer surface creation
     bool deferSurfaceCreation;