From bcaf44c511efaad9d803dde9b0fdbb046498c66f Mon Sep 17 00:00:00 2001
From: João Silva
Date: Sun, 18 Jun 2017 16:16:19 +0100
Subject: Support for savestate versioning. Plenty of cleanups.

---
 source/tile.h | 322 ++++++++++++++++++++++++++++++----------------------------
 1 file changed, 165 insertions(+), 157 deletions(-)

(limited to 'source/tile.h')

diff --git a/source/tile.h b/source/tile.h
index 6bc4e23..2a273f6 100644
--- a/source/tile.h
+++ b/source/tile.h
@@ -8,7 +8,7 @@
 \
     uint32_t TileAddr = BG.TileAddress + ((Tile & 0x3ff) << BG.TileShift); \
     if ((Tile & 0x1ff) >= 256) \
-   TileAddr += BG.NameSelect; \
+       TileAddr += BG.NameSelect; \
 \
     TileAddr &= 0xffff; \
 \
@@ -16,67 +16,67 @@
     pCache = &BG.Buffer[(TileNumber = (TileAddr >> BG.TileShift)) << 6]; \
 \
     if (!BG.Buffered [TileNumber]) \
-   BG.Buffered[TileNumber] = ConvertTile (pCache, TileAddr); \
+       BG.Buffered[TileNumber] = ConvertTile (pCache, TileAddr); \
 \
     if (BG.Buffered [TileNumber] == BLANK_TILE) \
-   return; \
+       return; \
 \
     uint32_t l; \
     uint16_t *ScreenColors; \
     if (BG.DirectColourMode) \
     { \
-   if (IPPU.DirectColourMapsNeedRebuild) \
-            S9xBuildDirectColourMaps (); \
-        ScreenColors = DirectColourMaps [(Tile >> 10) & BG.PaletteMask]; \
+       if (IPPU.DirectColourMapsNeedRebuild) \
+          S9xBuildDirectColourMaps (); \
+       ScreenColors = DirectColourMaps [(Tile >> 10) & BG.PaletteMask]; \
     } \
     else \
-   ScreenColors = &IPPU.ScreenColors [(((Tile >> 10) & BG.PaletteMask) << BG.PaletteShift) + BG.StartPalette];
+       ScreenColors = &IPPU.ScreenColors [(((Tile >> 10) & BG.PaletteMask) << BG.PaletteShift) + BG.StartPalette];
 
 #define RENDER_TILE(NORMAL, FLIPPED, N) \
     switch (Tile & (V_FLIP | H_FLIP)) \
     { \
     case 0: \
-   bp = pCache + StartLine; \
-   for (l = LineCount; l != 0; l--, bp += 8, Offset += GFX.PPL) \
-   { \
-       if (*(uint32_t *) bp) \
-      NORMAL (Offset, bp, ScreenColors); \
-       if (*(uint32_t *) (bp + 4)) \
-      NORMAL (Offset + N, bp + 4, ScreenColors); \
-   } \
-        break; \
+       bp = pCache + StartLine; \
+       for (l = LineCount; l != 0; l--, bp += 8, Offset += GFX.PPL) \
+       { \
+          if (*(uint32_t *) bp) \
+             NORMAL (Offset, bp, ScreenColors); \
+          if (*(uint32_t *) (bp + 4)) \
+             NORMAL (Offset + N, bp + 4, ScreenColors); \
+       } \
+       break; \
     case H_FLIP: \
-   bp = pCache + StartLine; \
-   for (l = LineCount; l != 0; l--, bp += 8, Offset += GFX.PPL) \
-   { \
-       if (*(uint32_t *) (bp + 4)) \
-      FLIPPED (Offset, bp + 4, ScreenColors); \
-       if (*(uint32_t *) bp) \
-      FLIPPED (Offset + N, bp, ScreenColors); \
-   } \
-        break; \
+       bp = pCache + StartLine; \
+       for (l = LineCount; l != 0; l--, bp += 8, Offset += GFX.PPL) \
+       { \
+          if (*(uint32_t *) (bp + 4)) \
+             FLIPPED (Offset, bp + 4, ScreenColors); \
+          if (*(uint32_t *) bp) \
+             FLIPPED (Offset + N, bp, ScreenColors); \
+       } \
+       break; \
     case H_FLIP | V_FLIP: \
-   bp = pCache + 56 - StartLine; \
-   for (l = LineCount; l != 0; l--, bp -= 8, Offset += GFX.PPL) \
-   { \
-       if (*(uint32_t *) (bp + 4)) \
-      FLIPPED (Offset, bp + 4, ScreenColors); \
-       if (*(uint32_t *) bp) \
-      FLIPPED (Offset + N, bp, ScreenColors); \
-   } \
-        break; \
+       bp = pCache + 56 - StartLine; \
+       for (l = LineCount; l != 0; l--, bp -= 8, Offset += GFX.PPL) \
+       { \
+          if (*(uint32_t *) (bp + 4)) \
+             FLIPPED (Offset, bp + 4, ScreenColors); \
+          if (*(uint32_t *) bp) \
+             FLIPPED (Offset + N, bp, ScreenColors); \
+       } \
+       break; \
     case V_FLIP: \
-   bp = pCache + 56 - StartLine; \
-   for (l = LineCount; l != 0; l--, bp -= 8, Offset += GFX.PPL) \
-   { \
-       if (*(uint32_t *) bp) \
-      NORMAL (Offset, bp, ScreenColors); \
-       if (*(uint32_t *) (bp + 4)) \
-      NORMAL (Offset + N, bp + 4, ScreenColors); \
-   } \
-        break; \
+       bp = pCache + 56 - StartLine; \
+       for (l = LineCount; l != 0; l--, bp -= 8, Offset += GFX.PPL) \
+       { \
+          if (*(uint32_t *) bp) \
+             NORMAL (Offset, bp, ScreenColors); \
+          if (*(uint32_t *) (bp + 4)) \
+             NORMAL (Offset + N, bp + 4, ScreenColors); \
+       } \
+       break; \
     default: \
-        break; \
+       break; \
     }
 
 #define TILE_CLIP_PREAMBLE \
@@ -85,168 +85,176 @@
 \
     if (StartPixel < 4) \
     { \
-   d1 = HeadMask [StartPixel]; \
-   if (StartPixel + Width < 4) \
-       d1 &= TailMask [StartPixel + Width]; \
+    d1 = HeadMask [StartPixel]; \
+       if (StartPixel + Width < 4) \
+          d1 &= TailMask [StartPixel + Width]; \
     } \
     else \
-   d1 = 0; \
+       d1 = 0; \
 \
     if (StartPixel + Width > 4) \
     { \
-   if (StartPixel > 4) \
-       d2 = HeadMask [StartPixel - 4]; \
-   else \
-       d2 = 0xffffffff; \
+       if (StartPixel > 4) \
+          d2 = HeadMask [StartPixel - 4]; \
+       else \
+          d2 = 0xffffffff; \
 \
-   d2 &= TailMask [(StartPixel + Width - 4)]; \
+       d2 &= TailMask [(StartPixel + Width - 4)]; \
     } \
     else \
-   d2 = 0;
+       d2 = 0;
 
 #define RENDER_CLIPPED_TILE(NORMAL, FLIPPED, N) \
     uint32_t dd; \
     switch (Tile & (V_FLIP | H_FLIP)) \
     { \
     case 0: \
-   bp = pCache + StartLine; \
-   for (l = LineCount; l != 0; l--, bp += 8, Offset += GFX.PPL) \
-   { \
-            /* This is perfectly OK, regardless of endian. The tiles are \
-             * cached in leftmost-endian order (when not horiz flipped) by \
-             * the ConvertTile function. \
-             */ \
-       if ((dd = (*(uint32_t *) bp) & d1)) \
-      NORMAL (Offset, (uint8_t *) &dd, ScreenColors); \
-       if ((dd = (*(uint32_t *) (bp + 4)) & d2)) \
-      NORMAL (Offset + N, (uint8_t *) &dd, ScreenColors); \
-   } \
-        break; \
+       bp = pCache + StartLine; \
+       for (l = LineCount; l != 0; l--, bp += 8, Offset += GFX.PPL) \
+       { \
+          /* This is perfectly OK, regardless of endianness. The tiles are \
+           * cached in leftmost-endian order (when not horiz flipped) by \
+           * the ConvertTile function. \
+           */ \
+          if ((dd = (*(uint32_t *) bp) & d1)) \
+             NORMAL (Offset, (uint8_t *) &dd, ScreenColors); \
+          if ((dd = (*(uint32_t *) (bp + 4)) & d2)) \
+             NORMAL (Offset + N, (uint8_t *) &dd, ScreenColors); \
+       } \
+       break; \
     case H_FLIP: \
-   bp = pCache + StartLine; \
-   SWAP_DWORD (d1); \
-   SWAP_DWORD (d2); \
-   for (l = LineCount; l != 0; l--, bp += 8, Offset += GFX.PPL) \
-   { \
-       if ((dd = *(uint32_t *) (bp + 4) & d1)) \
-      FLIPPED (Offset, (uint8_t *) &dd, ScreenColors); \
-       if ((dd = *(uint32_t *) bp & d2)) \
-      FLIPPED (Offset + N, (uint8_t *) &dd, ScreenColors); \
-   } \
-        break; \
+       bp = pCache + StartLine; \
+       SWAP_DWORD (d1); \
+       SWAP_DWORD (d2); \
+       for (l = LineCount; l != 0; l--, bp += 8, Offset += GFX.PPL) \
+       { \
+          if ((dd = *(uint32_t *) (bp + 4) & d1)) \
+             FLIPPED (Offset, (uint8_t *) &dd, ScreenColors); \
+          if ((dd = *(uint32_t *) bp & d2)) \
+             FLIPPED (Offset + N, (uint8_t *) &dd, ScreenColors); \
+       } \
+       break; \
     case H_FLIP | V_FLIP: \
-   bp = pCache + 56 - StartLine; \
-   SWAP_DWORD (d1); \
-   SWAP_DWORD (d2); \
-   for (l = LineCount; l != 0; l--, bp -= 8, Offset += GFX.PPL) \
-   { \
-       if ((dd = *(uint32_t *) (bp + 4) & d1)) \
-      FLIPPED (Offset, (uint8_t *) &dd, ScreenColors); \
-       if ((dd = *(uint32_t *) bp & d2)) \
-      FLIPPED (Offset + N, (uint8_t *) &dd, ScreenColors); \
-   } \
-        break; \
+       bp = pCache + 56 - StartLine; \
+       SWAP_DWORD (d1); \
+       SWAP_DWORD (d2); \
+       for (l = LineCount; l != 0; l--, bp -= 8, Offset += GFX.PPL) \
+       { \
+          if ((dd = *(uint32_t *) (bp + 4) & d1)) \
+             FLIPPED (Offset, (uint8_t *) &dd, ScreenColors); \
+          if ((dd = *(uint32_t *) bp & d2)) \
+             FLIPPED (Offset + N, (uint8_t *) &dd, ScreenColors); \
+       } \
+       break; \
     case V_FLIP: \
-   bp = pCache + 56 - StartLine; \
-   for (l = LineCount; l != 0; l--, bp -= 8, Offset += GFX.PPL) \
-   { \
-       if ((dd = (*(uint32_t *) bp) & d1)) \
-      NORMAL (Offset, (uint8_t *) &dd, ScreenColors); \
-       if ((dd = (*(uint32_t *) (bp + 4)) & d2)) \
-      NORMAL (Offset + N, (uint8_t *) &dd, ScreenColors); \
-   } \
-        break; \
+       bp = pCache + 56 - StartLine; \
+       for (l = LineCount; l != 0; l--, bp -= 8, Offset += GFX.PPL) \
+       { \
+          if ((dd = (*(uint32_t *) bp) & d1)) \
+             NORMAL (Offset, (uint8_t *) &dd, ScreenColors); \
+          if ((dd = (*(uint32_t *) (bp + 4)) & d2)) \
+             NORMAL (Offset + N, (uint8_t *) &dd, ScreenColors); \
+       } \
+       break; \
     default: \
-        break; \
+       break; \
     }
 
 #define RENDER_TILE_LARGE(PIXEL, FUNCTION) \
     switch (Tile & (V_FLIP | H_FLIP)) \
     { \
     case H_FLIP: \
-   StartPixel = 7 - StartPixel; \
-        /* fallthrough for no-flip case - above was a horizontal flip */ \
+       StartPixel = 7 - StartPixel; \
+       /* fallthrough for no-flip case - above was a horizontal flip */ \
     case 0: \
-   if ((pixel = *(pCache + StartLine + StartPixel))) \
-   { \
-       pixel = PIXEL; \
-       for (l = LineCount; l != 0; l--, sp += GFX.PPL, Depth += GFX.PPL) \
+       if ((pixel = *(pCache + StartLine + StartPixel))) \
        { \
-      int32_t z; \
-      for (z = Pixels - 1; z >= 0; z--) \
-          if (GFX.Z1 > Depth [z]) \
+          pixel = PIXEL; \
+          for (l = LineCount; l != 0; l--, sp += GFX.PPL, Depth += GFX.PPL) \
           { \
-         sp [z] = FUNCTION(sp + z, pixel); \
-         Depth [z] = GFX.Z2; \
-          }\
+             int32_t z; \
+             for (z = Pixels - 1; z >= 0; z--) \
+             { \
+                if (GFX.Z1 > Depth [z]) \
+                { \
+                   sp [z] = FUNCTION(sp + z, pixel); \
+                   Depth [z] = GFX.Z2; \
+                }\
+             } \
+          } \
        } \
-   } \
-        break; \
+       break; \
     case H_FLIP | V_FLIP: \
-   StartPixel = 7 - StartPixel; \
-        /* fallthrough for V_FLIP-only case - above was a horizontal flip */ \
+       StartPixel = 7 - StartPixel; \
+       /* fallthrough for V_FLIP-only case - above was a horizontal flip */ \
     case V_FLIP: \
-   if ((pixel = *(pCache + 56 - StartLine + StartPixel))) \
-   { \
-       pixel = PIXEL; \
-       for (l = LineCount; l != 0; l--, sp += GFX.PPL, Depth += GFX.PPL) \
+       if ((pixel = *(pCache + 56 - StartLine + StartPixel))) \
        { \
-      int32_t z; \
-      for (z = Pixels - 1; z >= 0; z--) \
-          if (GFX.Z1 > Depth [z]) \
+          pixel = PIXEL; \
+          for (l = LineCount; l != 0; l--, sp += GFX.PPL, Depth += GFX.PPL) \
           { \
-         sp [z] = FUNCTION(sp + z, pixel); \
-         Depth [z] = GFX.Z2; \
-          }\
+             int32_t z; \
+             for (z = Pixels - 1; z >= 0; z--) \
+             { \
+                if (GFX.Z1 > Depth [z]) \
+                { \
+                   sp [z] = FUNCTION(sp + z, pixel); \
+                   Depth [z] = GFX.Z2; \
+                }\
+             } \
+          } \
        } \
-   } \
-        break; \
+       break; \
     default: \
-        break; \
+       break; \
     }
 
 #define RENDER_TILE_LARGE_HALFWIDTH(PIXEL, FUNCTION) \
     switch (Tile & (V_FLIP | H_FLIP)) \
     { \
     case H_FLIP: \
-   StartPixel = 7 - StartPixel; \
-        /* fallthrough for no-flip case - above was a horizontal flip */ \
+       StartPixel = 7 - StartPixel; \
+       /* fallthrough for no-flip case - above was a horizontal flip */ \
     case 0: \
-   if ((pixel = *(pCache + StartLine + StartPixel))) \
-   { \
-       pixel = PIXEL; \
-       for (l = LineCount; l != 0; l--, sp += GFX.PPL, Depth += GFX.PPL) \
+       if ((pixel = *(pCache + StartLine + StartPixel))) \
        { \
-      int32_t z; \
-      for (z = Pixels - 2; z >= 0; z -= 2) \
-          if (GFX.Z1 > Depth [z]) \
+          pixel = PIXEL; \
+          for (l = LineCount; l != 0; l--, sp += GFX.PPL, Depth += GFX.PPL) \
           { \
-         sp [z >> 1] = FUNCTION(sp + z, pixel); \
-         Depth [z >> 1] = GFX.Z2; \
-          }\
+             int32_t z; \
+             for (z = Pixels - 2; z >= 0; z -= 2) \
+             { \
+                if (GFX.Z1 > Depth [z]) \
+                { \
+                   sp [z >> 1] = FUNCTION(sp + z, pixel); \
+                   Depth [z >> 1] = GFX.Z2; \
+                } \
+             } \
+          } \
        } \
-   } \
-        break; \
+       break; \
     case H_FLIP | V_FLIP: \
-   StartPixel = 7 - StartPixel; \
-        /* fallthrough for V_FLIP-only case - above was a horizontal flip */ \
+       StartPixel = 7 - StartPixel; \
+       /* fallthrough for V_FLIP-only case - above was a horizontal flip */ \
     case V_FLIP: \
-   if ((pixel = *(pCache + 56 - StartLine + StartPixel))) \
-   { \
-       pixel = PIXEL; \
-       for (l = LineCount; l != 0; l--, sp += GFX.PPL, Depth += GFX.PPL) \
+       if ((pixel = *(pCache + 56 - StartLine + StartPixel))) \
        { \
-      int32_t z; \
-      for (z = Pixels - 2; z >= 0; z -= 2) \
-          if (GFX.Z1 > Depth [z]) \
+          pixel = PIXEL; \
+          for (l = LineCount; l != 0; l--, sp += GFX.PPL, Depth += GFX.PPL) \
           { \
-         sp [z >> 1] = FUNCTION(sp + z, pixel); \
-         Depth [z >> 1] = GFX.Z2; \
-          }\
+             int32_t z; \
+             for (z = Pixels - 2; z >= 0; z -= 2) \
+             { \
+                if (GFX.Z1 > Depth [z]) \
+                { \
+                   sp [z >> 1] = FUNCTION(sp + z, pixel); \
+                   Depth [z >> 1] = GFX.Z2; \
+                } \
+             } \
+          } \
        } \
-   } \
-        break; \
+       break; \
     default: \
-        break; \
+       break; \
     }
 #endif
-- 
cgit v1.2.3