Modified inpainting pyramid passes to use a maximum of 7 mip levels. This allows the shaders to stay within the limit of 8 UAV bindings required by DX11.0, and gets rid of Unity's warnings and errors about breaking this limit.

Runtime/FrameInterpolation/FrameInterpolationContext.cs

@@ -286,7 +286,7 @@ namespace FidelityFX.FrameGen
             
             ref FrameInterpolation.InpaintingPyramidConstants spdConstants = ref SpdConstants;
             spdConstants.numWorkGroups = (uint)numWorkGroupsAndMips.x;
-            spdConstants.mips = (uint)numWorkGroupsAndMips.y;
+            spdConstants.mips = (uint)Math.Min(numWorkGroupsAndMips.y, 7);
             spdConstants.workGroupOffsetX = (uint)workGroupOffset.x;
             spdConstants.workGroupOffsetY = (uint)workGroupOffset.y;
         }

Runtime/FrameInterpolation/FrameInterpolationPass.cs

@@ -293,12 +293,6 @@ namespace FidelityFX.FrameGen
             BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap4, Resources.InpaintingPyramid, 4);
             BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap5, Resources.InpaintingPyramid, 5);
             BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap6, Resources.InpaintingPyramid, 6);
-            BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap7, Resources.InpaintingPyramid, 7);
-            BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap8, Resources.InpaintingPyramid, 8);
-            BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap9, Resources.InpaintingPyramid, 9);
-            BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap10, Resources.InpaintingPyramid, 10);
-            BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap11, Resources.InpaintingPyramid, 11);
-            BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap12, Resources.InpaintingPyramid, 12);
             
             commandBuffer.SetComputeConstantBufferParam(ComputeShader, FrameInterpolationShaderIDs.CbFrameInterpolation, Constants, 0, Marshal.SizeOf<FrameInterpolation.Constants>());
             commandBuffer.SetComputeConstantBufferParam(ComputeShader, FrameInterpolationShaderIDs.CbInpaintingPyramid, _spdConstants, 0, Marshal.SizeOf<FrameInterpolation.InpaintingPyramidConstants>());
@@ -359,12 +353,6 @@ namespace FidelityFX.FrameGen
             BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap4, Resources.InpaintingPyramid, 4);
             BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap5, Resources.InpaintingPyramid, 5);
             BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap6, Resources.InpaintingPyramid, 6);
-            BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap7, Resources.InpaintingPyramid, 7);
-            BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap8, Resources.InpaintingPyramid, 8);
-            BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap9, Resources.InpaintingPyramid, 9);
-            BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap10, Resources.InpaintingPyramid, 10);
-            BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap11, Resources.InpaintingPyramid, 11);
-            BindMipmap(commandBuffer, FrameInterpolationShaderIDs.UavInpaintingPyramidMipmap12, Resources.InpaintingPyramid, 12);
             
             commandBuffer.SetComputeConstantBufferParam(ComputeShader, FrameInterpolationShaderIDs.CbFrameInterpolation, Constants, 0, Marshal.SizeOf<FrameInterpolation.Constants>());
             commandBuffer.SetComputeConstantBufferParam(ComputeShader, FrameInterpolationShaderIDs.CbInpaintingPyramid, _spdConstants, 0, Marshal.SizeOf<FrameInterpolation.InpaintingPyramidConstants>());

Shaders/shaders/ffx_frameinterpolation_compute_game_vector_field_inpainting_pyramid_pass.hlsl

@@ -31,12 +31,6 @@
 #define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_4             5
 #define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_5             6
 #define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_6             7
-#define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_7             8
-#define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_8             9
-#define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_9             10
-#define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_10            11
-#define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_11            12
-#define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_12            13
 
 #define FFX_FRAMEINTERPOLATION_BIND_CB_FRAMEINTERPOLATION                       0
 

Shaders/shaders/ffx_frameinterpolation_compute_inpainting_pyramid_pass.hlsl

@@ -30,12 +30,6 @@
 #define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_4     5
 #define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_5     6
 #define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_6     7
-#define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_7     8
-#define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_8     9
-#define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_9     10
-#define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_10    11
-#define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_11    12
-#define FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_12    13
 
 #define FFX_FRAMEINTERPOLATION_BIND_CB_FRAMEINTERPOLATION               0
 

Shaders/shaders/frameinterpolation/ffx_frameinterpolation_callbacks_hlsl.h

@@ -701,13 +701,7 @@ FfxFloat32x2 LoadInputMotionVector(FfxInt32x2 iPxDilatedMotionVectorPos)
     defined(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_3)    && \
     defined(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_4)    && \
     defined(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_5)    && \
-    defined(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_6)    && \
-    defined(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_7)    && \
-    defined(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_8)    && \
-    defined(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_9)    && \
-    defined(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_10)   && \
-    defined(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_11)   && \
-    defined(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_12)
+    defined(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_6)
 
     RWTexture2D<FfxFloat32x4>                   rw_inpainting_pyramid0   : FFX_DECLARE_UAV(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_0);
     RWTexture2D<FfxFloat32x4>                   rw_inpainting_pyramid1   : FFX_DECLARE_UAV(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_1);
@@ -716,13 +710,6 @@ FfxFloat32x2 LoadInputMotionVector(FfxInt32x2 iPxDilatedMotionVectorPos)
     RWTexture2D<FfxFloat32x4>                   rw_inpainting_pyramid4   : FFX_DECLARE_UAV(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_4);
     globallycoherent RWTexture2D<FfxFloat32x4>  rw_inpainting_pyramid5   : FFX_DECLARE_UAV(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_5);
     RWTexture2D<FfxFloat32x4>                   rw_inpainting_pyramid6   : FFX_DECLARE_UAV(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_6);
-    RWTexture2D<FfxFloat32x4>                   rw_inpainting_pyramid7   : FFX_DECLARE_UAV(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_7);
-    RWTexture2D<FfxFloat32x4>                   rw_inpainting_pyramid8   : FFX_DECLARE_UAV(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_8);
-    RWTexture2D<FfxFloat32x4>                   rw_inpainting_pyramid9   : FFX_DECLARE_UAV(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_9);
-    RWTexture2D<FfxFloat32x4>                   rw_inpainting_pyramid10  : FFX_DECLARE_UAV(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_10);
-    RWTexture2D<FfxFloat32x4>                   rw_inpainting_pyramid11  : FFX_DECLARE_UAV(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_11);
-    RWTexture2D<FfxFloat32x4>                   rw_inpainting_pyramid12  : FFX_DECLARE_UAV(FFX_FRAMEINTERPOLATION_BIND_UAV_INPAINTING_PYRAMID_MIPMAP_12);
-
 
     FfxFloat32x4 RWLoadInpaintingPyramid(FFX_PARAMETER_IN FfxInt32x2 iPxPos, FFX_PARAMETER_IN FfxUInt32 index)
     {
@@ -738,12 +725,6 @@ FfxFloat32x2 LoadInputMotionVector(FfxInt32x2 iPxDilatedMotionVectorPos)
         LOAD(4);
         LOAD(5);
         LOAD(6);
-        LOAD(7);
-        LOAD(8);
-        LOAD(9);
-        LOAD(10);
-        LOAD(11);
-        LOAD(12);
         return 0;
 
         #undef LOAD
@@ -764,12 +745,6 @@ FfxFloat32x2 LoadInputMotionVector(FfxInt32x2 iPxDilatedMotionVectorPos)
         STORE(4);
         STORE(5);
         STORE(6);
-        STORE(7);
-        STORE(8);
-        STORE(9);
-        STORE(10);
-        STORE(11);
-        STORE(12);
 
         #undef STORE
     }

Shaders/shaders/frameinterpolation/ffx_frameinterpolation_inpainting.h

@@ -55,7 +55,7 @@ FfxFloat32x3 ComputeInpainting(FfxInt32x2 iPxPos)
     FfxFloat32 fWeightSum = 0.0f;
     FfxInt32x2 iTexSize = DisplaySize();
 
-    for (FfxInt32 iMipLevel = 0; iMipLevel < 10; iMipLevel++) {
+    for (FfxInt32 iMipLevel = 0; iMipLevel < 7; iMipLevel++) {
 
         iTexSize /= 2;
 
@@ -63,7 +63,7 @@ FfxFloat32x3 ComputeInpainting(FfxInt32x2 iPxPos)
 
         if (fMipColor.w > 0.0f) {
             const FfxFloat32x3 fNormalizedMipColor = fMipColor.rgb / fMipColor.w;
-            const FfxFloat32 fMipWeight = ffxPow(1.0f - iMipLevel / 10.0f, 3.0f) * fMipColor.w;
+            const FfxFloat32 fMipWeight = ffxPow(1.0f - iMipLevel / 7.0f, 3.0f) * fMipColor.w;
 
             fColor += FfxFloat32x4(fNormalizedMipColor, 1.0f) * fMipWeight;
         }