[dxvk] Add config option to toggle tiler optimizations

dxvk.conf

@@ -218,6 +218,16 @@
 # dxvk.tearFree = Auto
 
 
+# Controls tiler optimizations. Enabling these will alter the behaviour of
+# submission heuristics and enables some non-default behaviour in DXVK.
+# This option is only intended to be changed for performance testing and
+# debugging purposes.
+#
+# Supported values: Auto, True, False
+
+# dxvk.tilerMode = Auto
+
+
 # Assume that command lists created from deferred contexts are only used
 # once. This is extremely common and may improve performance while reducing
 # the amount of memory wasted if games keep their command list objects alive

src/dxvk/dxvk_device.cpp

@@ -434,7 +434,9 @@ namespace dxvk {
     hints.renderPassClearFormatBug = m_adapter->matchesDriver(
       VK_DRIVER_ID_NVIDIA_PROPRIETARY, Version(), Version(560, 28, 3));
     // On tilers we need to respect render passes some more
-    hints.preferRenderPassOps = m_adapter->matchesDriver(VK_DRIVER_ID_MESA_TURNIP);
+    bool tilerMode = m_adapter->matchesDriver(VK_DRIVER_ID_MESA_TURNIP);
+    applyTristate(tilerMode, m_options.tilerMode);
+    hints.preferRenderPassOps = tilerMode;
     return hints;
   }
 

src/dxvk/dxvk_options.cpp

@@ -19,6 +19,7 @@ namespace dxvk {
     zeroMappedMemory      = config.getOption<bool>    ("dxvk.zeroMappedMemory",       false);
     allowFse              = config.getOption<bool>    ("dxvk.allowFse",               false);
     deviceFilter          = config.getOption<std::string>("dxvk.deviceFilter",        "");
+    tilerMode             = config.getOption<Tristate>("dxvk.tilerMode",              Tristate::Auto);
   }
 
 }

src/dxvk/dxvk_options.h

@@ -58,6 +58,9 @@ namespace dxvk {
     /// Allows full-screen exclusive mode on Windows
     bool allowFse = false;
 
+    /// Whether to enable tiler optimizations
+    Tristate tilerMode = Tristate::Auto;
+
     // Device name
     std::string deviceFilter;
   };