[d3d11] Introduce d3d11.ignoreGraphicsBarriers option

dxvk.conf

@@ -158,6 +158,16 @@
 # d3d11.relaxedBarriers = False
 
 
+# Ignores barriers around UAV writes from fragment shaders.
+#
+# This may improve performance in some games, but may also introduce
+# rendering issues. Please don't report bugs with the option enabled.
+#
+# Supported values: True, False
+
+# d3d11.ignoreGraphicsBarriers = False
+
+
 # Overrides anisotropic filtering for all samplers. Set this to a positive
 # value to enable AF for all samplers in the game, or to 0 in order to
 # disable AF entirely. Negative values will have no effect.

src/d3d11/d3d11_context_ext.cpp

@@ -128,7 +128,10 @@ namespace dxvk {
     
     if (ControlFlags & D3D11_VK_BARRIER_CONTROL_IGNORE_WRITE_AFTER_WRITE)
       flags.set(DxvkBarrierControl::IgnoreWriteAfterWrite);
-    
+
+    if (ControlFlags & D3D11_VK_BARRIER_CONTROL_IGNORE_GRAPHICS_UAV)
+      flags.set(DxvkBarrierControl::IgnoreGraphicsBarriers);
+
     m_ctx->EmitCs([cFlags = flags] (DxvkContext* ctx) {
       ctx->setBarrierControl(cFlags);
     });

src/d3d11/d3d11_context_imm.cpp

@@ -16,13 +16,21 @@ namespace dxvk {
     m_csThread(Device->createContext()),
     m_videoContext(this, Device) {
     EmitCs([
-      cDevice          = m_device,
-      cRelaxedBarriers = pParent->GetOptions()->relaxedBarriers
+      cDevice                 = m_device,
+      cRelaxedBarriers        = pParent->GetOptions()->relaxedBarriers,
+      cIgnoreGraphicsBarriers = pParent->GetOptions()->ignoreGraphicsBarriers
     ] (DxvkContext* ctx) {
       ctx->beginRecording(cDevice->createCommandList());
 
+      DxvkBarrierControlFlags barrierControl;
+
       if (cRelaxedBarriers)
-        ctx->setBarrierControl(DxvkBarrierControl::IgnoreWriteAfterWrite);
+        barrierControl.set(DxvkBarrierControl::IgnoreWriteAfterWrite);
+
+      if (cIgnoreGraphicsBarriers)
+        barrierControl.set(DxvkBarrierControl::IgnoreGraphicsBarriers);
+
+      ctx->setBarrierControl(barrierControl);
     });
     
     ClearState();

src/d3d11/d3d11_interfaces.h

@@ -22,6 +22,7 @@ enum D3D11_VK_EXTENSION : uint32_t {
  */
 enum D3D11_VK_BARRIER_CONTROL : uint32_t {
   D3D11_VK_BARRIER_CONTROL_IGNORE_WRITE_AFTER_WRITE   = 1 << 0,
+  D3D11_VK_BARRIER_CONTROL_IGNORE_GRAPHICS_UAV        = 1 << 1,
 };
 
 

src/d3d11/d3d11_options.cpp

@@ -12,6 +12,7 @@ namespace dxvk {
     this->zeroInitWorkgroupMemory  = config.getOption<bool>("d3d11.zeroInitWorkgroupMemory", false);
     this->forceTgsmBarriers     = config.getOption<bool>("d3d11.forceTgsmBarriers", false);
     this->relaxedBarriers       = config.getOption<bool>("d3d11.relaxedBarriers", false);
+    this->ignoreGraphicsBarriers = config.getOption<bool>("d3d11.ignoreGraphicsBarriers", false);
     this->maxTessFactor         = config.getOption<int32_t>("d3d11.maxTessFactor", 0);
     this->samplerAnisotropy     = config.getOption<int32_t>("d3d11.samplerAnisotropy", -1);
     this->invariantPosition     = config.getOption<bool>("d3d11.invariantPosition", true);

src/d3d11/d3d11_options.h

@@ -48,6 +48,12 @@ namespace dxvk {
     /// but might also cause rendering issues.
     bool relaxedBarriers;
 
+    /// Ignore graphics barriers
+    ///
+    /// May improve performance in some games,
+    /// but might also cause rendering issues.
+    bool ignoreGraphicsBarriers;
+
     /// Maximum tessellation factor.
     ///
     /// Limits tessellation factors in tessellation