VideoSoftware: Implement xfb copy filter (Deflickering/Brightness)

Source/Core/VideoCommon/BPMemory.h

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include <array>
 #include <string>
 
 #include "Common/BitField.h"
@@ -944,8 +945,8 @@ union UPE_Copy
 {
   u32 Hex;
 
-  BitField<0, 1, u32> clamp0;               // if set clamp top
-  BitField<1, 1, u32> clamp1;               // if set clamp bottom
+  BitField<0, 1, u32> clamp_top;            // if set clamp top
+  BitField<1, 1, u32> clamp_bottom;         // if set clamp bottom
   BitField<2, 1, u32> yuv;                  // if set, color conversion from RGB to YUV
   BitField<3, 4, u32> target_pixel_format;  // realformat is (fmt/2)+((fmt&1)*8).... for some reason
                                             // the msb is the lsb (pattern: cycling right shift)
@@ -967,6 +968,27 @@ union UPE_Copy
   }
 };
 
+union CopyFilterCoefficients
+{
+  u64 Hex;
+
+  BitField<0, 6, u64> w0;
+  BitField<6, 6, u64> w1;
+  BitField<12, 6, u64> w2;
+  BitField<18, 6, u64> w3;
+  BitField<32, 6, u64> w4;
+  BitField<38, 6, u64> w5;
+  BitField<44, 6, u64> w6;
+
+  std::array<u8, 7> GetCoefficients() const
+  {
+    return {
+        static_cast<u8>(w0), static_cast<u8>(w1), static_cast<u8>(w2), static_cast<u8>(w3),
+        static_cast<u8>(w4), static_cast<u8>(w5), static_cast<u8>(w6),
+    };
+  }
+};
+
 union BPU_PreloadTileInfo
 {
   u32 hex;
@@ -1036,29 +1058,29 @@ struct BPMemory
                                  // 2 channel, 16 when dest is RGBA
   // also, doubles whenever mipmap box filter option is set (excent on RGBA). Probably to do with
   // number of bytes to look at when smoothing
-  u32 dispcopyyscale;              // 4e
-  u32 clearcolorAR;                // 4f
-  u32 clearcolorGB;                // 50
-  u32 clearZValue;                 // 51
-  UPE_Copy triggerEFBCopy;         // 52
-  u32 copyfilter[2];               // 53,54
-  u32 boundbox0;                   // 55
-  u32 boundbox1;                   // 56
-  u32 unknown7[2];                 // 57,58
-  X10Y10 scissorOffset;            // 59
-  u32 unknown8[6];                 // 5a,5b,5c,5d, 5e,5f
-  BPS_TmemConfig tmem_config;      // 60-66
-  u32 metric;                      // 67
-  FieldMode fieldmode;             // 68
-  u32 unknown10[7];                // 69-6F
-  u32 unknown11[16];               // 70-7F
-  FourTexUnits tex[2];             // 80-bf
-  TevStageCombiner combiners[16];  // 0xC0-0xDF
-  TevReg tevregs[4];               // 0xE0
-  FogRangeParams fogRange;         // 0xE8
-  FogParams fog;                   // 0xEE,0xEF,0xF0,0xF1,0xF2
-  AlphaTest alpha_test;            // 0xF3
-  ZTex1 ztex1;                     // 0xf4,0xf5
+  u32 dispcopyyscale;                 // 4e
+  u32 clearcolorAR;                   // 4f
+  u32 clearcolorGB;                   // 50
+  u32 clearZValue;                    // 51
+  UPE_Copy triggerEFBCopy;            // 52
+  CopyFilterCoefficients copyfilter;  // 53,54
+  u32 boundbox0;                      // 55
+  u32 boundbox1;                      // 56
+  u32 unknown7[2];                    // 57,58
+  X10Y10 scissorOffset;               // 59
+  u32 unknown8[6];                    // 5a,5b,5c,5d, 5e,5f
+  BPS_TmemConfig tmem_config;         // 60-66
+  u32 metric;                         // 67
+  FieldMode fieldmode;                // 68
+  u32 unknown10[7];                   // 69-6F
+  u32 unknown11[16];                  // 70-7F
+  FourTexUnits tex[2];                // 80-bf
+  TevStageCombiner combiners[16];     // 0xC0-0xDF
+  TevReg tevregs[4];                  // 0xE0
+  FogRangeParams fogRange;            // 0xE8
+  FogParams fog;                      // 0xEE,0xEF,0xF0,0xF1,0xF2
+  AlphaTest alpha_test;               // 0xF3
+  ZTex1 ztex1;                        // 0xf4,0xf5
   ZTex2 ztex2;
   TevKSel tevksel[8];  // 0xf6,0xf7,f8,f9,fa,fb,fc,fd
   u32 bpMask;          // 0xFE