[d3d9] Add an config option to disable non seamless cube maps.

dxvk.conf

@@ -548,6 +548,16 @@
 
 # d3d9.apitraceMode = False
 
+# Seamless Cubes
+#
+# Don't use non seamless cube maps even if they are supported.
+# Non seamless cubes are correct d3d9 behavior, but can produce worse looking edges.
+#
+# Supported values:
+# - True/False
+
+# d3d9.seamlessCubes = False
+
 # Debug Utils
 #
 # Enables debug utils as this is off by default, this enables user annotations like BeginEvent()/EndEvent().

src/d3d9/d3d9_device.cpp

@@ -5963,7 +5963,7 @@ namespace dxvk {
       info.mipmapLodMin   = mipFilter.MipsEnabled ? float(cKey.MaxMipLevel) : 0;
       info.mipmapLodMax   = mipFilter.MipsEnabled ? FLT_MAX                 : 0;
       info.usePixelCoord  = VK_FALSE;
-      info.nonSeamless    = m_dxvkDevice->features().extNonSeamlessCubeMap.nonSeamlessCubeMap;
+      info.nonSeamless    = m_dxvkDevice->features().extNonSeamlessCubeMap.nonSeamlessCubeMap && !m_d3d9Options.seamlessCubes;
 
       DecodeD3DCOLOR(cKey.BorderColor, info.borderColor.float32);
 

src/d3d9/d3d9_options.cpp

@@ -73,6 +73,7 @@ namespace dxvk {
     this->apitraceMode                  = config.getOption<bool>        ("d3d9.apitraceMode",                  false);
     this->deviceLocalConstantBuffers    = config.getOption<bool>        ("d3d9.deviceLocalConstantBuffers",    false);
     this->allowDirectBufferMapping      = config.getOption<bool>        ("d3d9.allowDirectBufferMapping",      true);
+    this->seamlessCubes                 = config.getOption<bool>        ("d3d9.seamlessCubes",                 false);
 
     // If we are not Nvidia, enable general hazards.
     this->generalHazards = adapter != nullptr

src/d3d9/d3d9_options.h

@@ -157,6 +157,9 @@ namespace dxvk {
 
     /// Disable direct buffer mapping
     bool allowDirectBufferMapping;
+
+    /// Don't use non seamless cube maps
+    bool seamlessCubes;
   };
 
 }