diff --git a/renderdoc/driver/metal/CMakeLists.txt b/renderdoc/driver/metal/CMakeLists.txt
index 17df343cc..862032ebb 100644
--- a/renderdoc/driver/metal/CMakeLists.txt
+++ b/renderdoc/driver/metal/CMakeLists.txt
@@ -18,6 +18,7 @@ set(sources
     metal_function.cpp
     metal_function.h
     metal_function_bridge.mm
+    metal_common.cpp
     metal_common.h
     metal_command_queue.cpp
     metal_command_queue.h
diff --git a/renderdoc/driver/metal/metal_common.cpp b/renderdoc/driver/metal/metal_common.cpp
new file mode 100644
index 000000000..df2d818b7
--- /dev/null
+++ b/renderdoc/driver/metal/metal_common.cpp
@@ -0,0 +1,85 @@
+/******************************************************************************
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2022 Baldur Karlsson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ ******************************************************************************/
+
+#include "metal_common.h"
+
+BlendMultiplier MakeBlendMultiplier(MTL::BlendFactor blend)
+{
+  switch(blend)
+  {
+    case MTL::BlendFactorZero: return BlendMultiplier::Zero;
+    case MTL::BlendFactorOne: return BlendMultiplier::One;
+    case MTL::BlendFactorSourceColor: return BlendMultiplier::SrcCol;
+    case MTL::BlendFactorOneMinusSourceColor: return BlendMultiplier::InvSrcCol;
+    case MTL::BlendFactorDestinationColor: return BlendMultiplier::DstCol;
+    case MTL::BlendFactorOneMinusDestinationColor: return BlendMultiplier::InvDstCol;
+    case MTL::BlendFactorSourceAlpha: return BlendMultiplier::SrcAlpha;
+    case MTL::BlendFactorOneMinusSourceAlpha: return BlendMultiplier::InvSrcAlpha;
+    case MTL::BlendFactorDestinationAlpha: return BlendMultiplier::DstAlpha;
+    case MTL::BlendFactorOneMinusDestinationAlpha: return BlendMultiplier::InvDstAlpha;
+    case MTL::BlendFactorBlendColor: return BlendMultiplier::FactorRGB;
+    case MTL::BlendFactorOneMinusBlendColor: return BlendMultiplier::InvFactorRGB;
+    case MTL::BlendFactorBlendAlpha: return BlendMultiplier::FactorAlpha;
+    case MTL::BlendFactorOneMinusBlendAlpha: return BlendMultiplier::InvFactorAlpha;
+    case MTL::BlendFactorSourceAlphaSaturated: return BlendMultiplier::SrcAlphaSat;
+    case MTL::BlendFactorSource1Color: return BlendMultiplier::Src1Col;
+    case MTL::BlendFactorOneMinusSource1Color: return BlendMultiplier::InvSrc1Col;
+    case MTL::BlendFactorSource1Alpha: return BlendMultiplier::Src1Alpha;
+    case MTL::BlendFactorOneMinusSource1Alpha: return BlendMultiplier::InvSrc1Alpha;
+    default: break;
+  }
+
+  return BlendMultiplier::One;
+}
+
+BlendOperation MakeBlendOp(MTL::BlendOperation op)
+{
+  switch(op)
+  {
+    case MTL::BlendOperationAdd: return BlendOperation::Add;
+    case MTL::BlendOperationSubtract: return BlendOperation::Subtract;
+    case MTL::BlendOperationReverseSubtract: return BlendOperation::ReversedSubtract;
+    case MTL::BlendOperationMin: return BlendOperation::Minimum;
+    case MTL::BlendOperationMax: return BlendOperation::Maximum;
+    default: break;
+  }
+
+  return BlendOperation::Add;
+}
+
+byte MakeWriteMask(MTL::ColorWriteMask mask)
+{
+  byte ret = 0;
+
+  if(mask & MTL::ColorWriteMaskRed)
+    ret |= 0x1;
+  if(mask & MTL::ColorWriteMaskGreen)
+    ret |= 0x2;
+  if(mask & MTL::ColorWriteMaskBlue)
+    ret |= 0x4;
+  if(mask & MTL::ColorWriteMaskAlpha)
+    ret |= 0x8;
+
+  return ret;
+}
diff --git a/renderdoc/driver/metal/metal_common.h b/renderdoc/driver/metal/metal_common.h
index 722686a3b..5439c2e83 100644
--- a/renderdoc/driver/metal/metal_common.h
+++ b/renderdoc/driver/metal/metal_common.h
@@ -299,3 +299,7 @@ DECLARE_REFLECTION_ENUM(MetalChunk);
       RDCWARN("Metal '%s' not implemented - " __VA_ARGS__, __PRETTY_FUNCTION__); \
     msgprinted = true;                                                           \
   } while((void)0, 0)
+
+BlendMultiplier MakeBlendMultiplier(MTL::BlendFactor blend);
+BlendOperation MakeBlendOp(MTL::BlendOperation op);
+byte MakeWriteMask(MTL::ColorWriteMask mask);