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-rw-r--r--source/gfx.cpp97
-rw-r--r--source/gfx.h66
-rw-r--r--source/tile.cpp250
3 files changed, 272 insertions, 141 deletions
diff --git a/source/gfx.cpp b/source/gfx.cpp
index f6a6217..decd195 100644
--- a/source/gfx.cpp
+++ b/source/gfx.cpp
@@ -892,8 +892,8 @@ void S9xSetInfoString (const char *string)
inline void SelectTileRenderer (bool8 normal)
{
- if (normal)
- {
+ if (normal)
+ {
if (IPPU.HalfWidthPixels)
{
DrawTilePtr = DrawTile16HalfWidth;
@@ -906,58 +906,51 @@ inline void SelectTileRenderer (bool8 normal)
DrawClippedTilePtr = DrawClippedTile16;
DrawLargePixelPtr = DrawLargePixel16;
}
- }
- else
- {
- if (GFX.r2131 & 0x80)
- {
- if (GFX.r2131 & 0x40)
- {
- if (GFX.r2130 & 2)
- {
- DrawTilePtr = DrawTile16Sub1_2;
- DrawClippedTilePtr = DrawClippedTile16Sub1_2;
- }
- else
- {
- // Fixed colour substraction
- DrawTilePtr = DrawTile16FixedSub1_2;
- DrawClippedTilePtr = DrawClippedTile16FixedSub1_2;
- }
- DrawLargePixelPtr = DrawLargePixel16Sub1_2;
- }
- else
- {
- DrawTilePtr = DrawTile16Sub;
- DrawClippedTilePtr = DrawClippedTile16Sub;
- DrawLargePixelPtr = DrawLargePixel16Sub;
- }
- }
- else
+ }
+ else
+ {
+ switch (GFX.r2131 & 0xC0)
{
- if (GFX.r2131 & 0x40)
- {
- if (GFX.r2130 & 2)
- {
- DrawTilePtr = DrawTile16Add1_2;
- DrawClippedTilePtr = DrawClippedTile16Add1_2;
- }
- else
- {
- // Fixed colour addition
- DrawTilePtr = DrawTile16FixedAdd1_2;
- DrawClippedTilePtr = DrawClippedTile16FixedAdd1_2;
- }
- DrawLargePixelPtr = DrawLargePixel16Add1_2;
- }
- else
- {
- DrawTilePtr = DrawTile16Add;
- DrawClippedTilePtr = DrawClippedTile16Add;
- DrawLargePixelPtr = DrawLargePixel16Add;
- }
+ case 0x00:
+ DrawTilePtr = DrawTile16Add;
+ DrawClippedTilePtr = DrawClippedTile16Add;
+ DrawLargePixelPtr = DrawLargePixel16Add;
+ break;
+ case 0x40:
+ if (GFX.r2130 & 2)
+ {
+ DrawTilePtr = DrawTile16Add1_2;
+ DrawClippedTilePtr = DrawClippedTile16Add1_2;
+ }
+ else
+ {
+ // Fixed colour addition
+ DrawTilePtr = DrawTile16FixedAdd1_2;
+ DrawClippedTilePtr = DrawClippedTile16FixedAdd1_2;
+ }
+ DrawLargePixelPtr = DrawLargePixel16Add1_2;
+ break;
+ case 0x80:
+ DrawTilePtr = DrawTile16Sub;
+ DrawClippedTilePtr = DrawClippedTile16Sub;
+ DrawLargePixelPtr = DrawLargePixel16Sub;
+ break;
+ case 0xC0:
+ if (GFX.r2130 & 2)
+ {
+ DrawTilePtr = DrawTile16Sub1_2;
+ DrawClippedTilePtr = DrawClippedTile16Sub1_2;
+ }
+ else
+ {
+ // Fixed colour substraction
+ DrawTilePtr = DrawTile16FixedSub1_2;
+ DrawClippedTilePtr = DrawClippedTile16FixedSub1_2;
+ }
+ DrawLargePixelPtr = DrawLargePixel16Sub1_2;
+ break;
}
- }
+ }
}
void S9xSetupOBJ ()
diff --git a/source/gfx.h b/source/gfx.h
index d6da783..88b2640 100644
--- a/source/gfx.h
+++ b/source/gfx.h
@@ -93,6 +93,31 @@
#include "port.h"
#include "snes9x.h"
+START_EXTERN_C
+void S9xStartScreenRefresh ();
+void S9xDrawScanLine (uint8 Line);
+void S9xEndScreenRefresh ();
+void S9xSetupOBJ ();
+void S9xUpdateScreen ();
+void RenderLine (uint8 line);
+void S9xBuildDirectColourMaps ();
+
+// External port interface which must be implemented or initialised for each
+// port.
+extern struct SGFX GFX;
+
+bool8 S9xGraphicsInit ();
+void S9xGraphicsDeinit();
+bool8 S9xInitUpdate (void);
+bool8 S9xDeinitUpdate (int Width, int Height, bool8 sixteen_bit);
+void S9xSyncSpeed ();
+
+#ifdef GFX_MULTI_FORMAT
+bool8 S9xSetRenderPixelFormat (int format);
+#endif
+
+END_EXTERN_C
+
struct SGFX{
// Initialize these variables
uint8 *Screen;
@@ -231,11 +256,17 @@ GFX.X2 [((((C1) & RGB_REMOVE_LOW_BITS_MASK) + \
((C2) & RGB_REMOVE_LOW_BITS_MASK)) >> 1) + \
((C1) & (C2) & RGB_LOW_BITS_MASK)]
#else
-#define COLOR_ADD(C1, C2) \
-(GFX.X2 [((((C1) & RGB_REMOVE_LOW_BITS_MASK) + \
- ((C2) & RGB_REMOVE_LOW_BITS_MASK)) >> 1) + \
- ((C1) & (C2) & RGB_LOW_BITS_MASK)] | \
- (((C1) ^ (C2)) & RGB_LOW_BITS_MASK))
+inline uint16 COLOR_ADD (uint16, uint16);
+
+inline uint16 COLOR_ADD (uint16 C1, uint16 C2)
+{
+ if (C1 == 0)
+ return C2;
+ else if (C2 == 0)
+ return C1;
+ else
+ return GFX.X2 [(((C1 & RGB_REMOVE_LOW_BITS_MASK) + (C2 & RGB_REMOVE_LOW_BITS_MASK)) >> 1) + (C1 & C2 & RGB_LOW_BITS_MASK)] | ((C1 ^ C2) & RGB_LOW_BITS_MASK);
+}
#endif
#define COLOR_ADD1_2(C1, C2) \
@@ -288,30 +319,5 @@ typedef void (*LargePixelRenderer) (uint32 Tile, uint32 Offset,
uint32 StartPixel, uint32 Pixels,
uint32 StartLine, uint32 LineCount);
-START_EXTERN_C
-void S9xStartScreenRefresh ();
-void S9xDrawScanLine (uint8 Line);
-void S9xEndScreenRefresh ();
-void S9xSetupOBJ ();
-void S9xUpdateScreen ();
-void RenderLine (uint8 line);
-void S9xBuildDirectColourMaps ();
-
-// External port interface which must be implemented or initialised for each
-// port.
-extern struct SGFX GFX;
-
-bool8 S9xGraphicsInit ();
-void S9xGraphicsDeinit();
-bool8 S9xInitUpdate (void);
-bool8 S9xDeinitUpdate (int Width, int Height, bool8 sixteen_bit);
-void S9xSyncSpeed ();
-
-#ifdef GFX_MULTI_FORMAT
-bool8 S9xSetRenderPixelFormat (int format);
-#endif
-
-END_EXTERN_C
-
#endif
diff --git a/source/tile.cpp b/source/tile.cpp
index e18182d..653a6d7 100644
--- a/source/tile.cpp
+++ b/source/tile.cpp
@@ -764,15 +764,18 @@ static void WRITE_4PIXELS16_ADD (uint32 Offset, uint8 *Pixels, uint16 *ScreenCol
{
if (GFX.Z1 > Depth [N] && (Pixel = Pixels[N]))
{
- if (SubDepth [N])
+ switch (SubDepth [N])
{
- if (SubDepth [N] != 1)
- Screen [N] = COLOR_ADD (ScreenColors [Pixel], Screen [GFX.Delta + N]);
- else
- Screen [N] = COLOR_ADD (ScreenColors [Pixel], GFX.FixedColour);
- }
- else
+ case 0:
Screen [N] = ScreenColors [Pixel];
+ break;
+ case 1:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], GFX.FixedColour);
+ break;
+ default:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], Screen [GFX.Delta + N]);
+ break;
+ }
Depth [N] = GFX.Z2;
}
}
@@ -789,15 +792,18 @@ static void WRITE_4PIXELS16_FLIPPED_ADD (uint32 Offset, uint8 *Pixels, uint16 *S
{
if (GFX.Z1 > Depth [N] && (Pixel = Pixels[3 - N]))
{
- if (SubDepth [N])
+ switch (SubDepth [N])
{
- if (SubDepth [N] != 1)
- Screen [N] = COLOR_ADD (ScreenColors [Pixel], Screen [GFX.Delta + N]);
- else
- Screen [N] = COLOR_ADD (ScreenColors [Pixel], GFX.FixedColour);
- }
- else
+ case 0:
Screen [N] = ScreenColors [Pixel];
+ break;
+ case 1:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], GFX.FixedColour);
+ break;
+ default:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], Screen [GFX.Delta + N]);
+ break;
+ }
Depth [N] = GFX.Z2;
}
}
@@ -814,15 +820,18 @@ static void WRITE_4PIXELS16_ADD1_2 (uint32 Offset, uint8 *Pixels, uint16 *Screen
{
if (GFX.Z1 > Depth [N] && (Pixel = Pixels[N]))
{
- if (SubDepth [N])
+ switch (SubDepth [N])
{
- if (SubDepth [N] != 1)
- Screen [N] = (uint16) (COLOR_ADD1_2 (ScreenColors [Pixel], Screen [GFX.Delta + N]));
- else
- Screen [N] = COLOR_ADD (ScreenColors [Pixel], GFX.FixedColour);
- }
- else
+ case 0:
Screen [N] = ScreenColors [Pixel];
+ break;
+ case 1:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], GFX.FixedColour);
+ break;
+ default:
+ Screen [N] = (uint16) (COLOR_ADD1_2 (ScreenColors [Pixel], Screen [GFX.Delta + N]));
+ break;
+ }
Depth [N] = GFX.Z2;
}
}
@@ -839,15 +848,18 @@ static void WRITE_4PIXELS16_FLIPPED_ADD1_2 (uint32 Offset, uint8 *Pixels, uint16
{
if (GFX.Z1 > Depth [N] && (Pixel = Pixels[3 - N]))
{
- if (SubDepth [N])
+ switch (SubDepth [N])
{
- if (SubDepth [N] != 1)
- Screen [N] = (uint16) (COLOR_ADD1_2 (ScreenColors [Pixel], Screen [GFX.Delta + N]));
- else
- Screen [N] = COLOR_ADD (ScreenColors [Pixel], GFX.FixedColour);
- }
- else
+ case 0:
Screen [N] = ScreenColors [Pixel];
+ break;
+ case 1:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], GFX.FixedColour);
+ break;
+ default:
+ Screen [N] = (uint16) (COLOR_ADD1_2 (ScreenColors [Pixel], Screen [GFX.Delta + N]));
+ break;
+ }
Depth [N] = GFX.Z2;
}
}
@@ -864,15 +876,18 @@ static void WRITE_4PIXELS16_SUB (uint32 Offset, uint8 *Pixels, uint16 *ScreenCol
{
if (GFX.Z1 > Depth [N] && (Pixel = Pixels[N]))
{
- if (SubDepth [N])
+ switch (SubDepth [N])
{
- if (SubDepth [N] != 1)
- Screen [N] = (uint16) COLOR_SUB (ScreenColors [Pixel], Screen [GFX.Delta + N]);
- else
- Screen [N] = (uint16) COLOR_SUB (ScreenColors [Pixel], GFX.FixedColour);
- }
- else
+ case 0:
Screen [N] = ScreenColors [Pixel];
+ break;
+ case 1:
+ Screen [N] = (uint16) COLOR_SUB (ScreenColors [Pixel], GFX.FixedColour);
+ break;
+ default:
+ Screen [N] = (uint16) COLOR_SUB (ScreenColors [Pixel], Screen [GFX.Delta + N]);
+ break;
+ }
Depth [N] = GFX.Z2;
}
}
@@ -889,15 +904,18 @@ static void WRITE_4PIXELS16_FLIPPED_SUB (uint32 Offset, uint8 *Pixels, uint16 *S
{
if (GFX.Z1 > Depth [N] && (Pixel = Pixels[3 - N]))
{
- if (SubDepth [N])
+ switch (SubDepth [N])
{
- if (SubDepth [N] != 1)
- Screen [N] = (uint16) COLOR_SUB (ScreenColors [Pixel], Screen [GFX.Delta + N]);
- else
- Screen [N] = (uint16) COLOR_SUB (ScreenColors [Pixel], GFX.FixedColour);
- }
- else
+ case 0:
Screen [N] = ScreenColors [Pixel];
+ break;
+ case 1:
+ Screen [N] = (uint16) COLOR_SUB (ScreenColors [Pixel], GFX.FixedColour);
+ break;
+ default:
+ Screen [N] = (uint16) COLOR_SUB (ScreenColors [Pixel], Screen [GFX.Delta + N]);
+ break;
+ }
Depth [N] = GFX.Z2;
}
}
@@ -914,15 +932,18 @@ static void WRITE_4PIXELS16_SUB1_2 (uint32 Offset, uint8 *Pixels, uint16 *Screen
{
if (GFX.Z1 > Depth [N] && (Pixel = Pixels[N]))
{
- if (SubDepth [N])
+ switch (SubDepth [N])
{
- if (SubDepth [N] != 1)
- Screen [N] = (uint16) COLOR_SUB1_2 (ScreenColors [Pixel], Screen [GFX.Delta + N]);
- else
- Screen [N] = (uint16) COLOR_SUB (ScreenColors [Pixel], GFX.FixedColour);
- }
- else
+ case 0:
Screen [N] = ScreenColors [Pixel];
+ break;
+ case 1:
+ Screen [N] = (uint16) COLOR_SUB (ScreenColors [Pixel], GFX.FixedColour);
+ break;
+ default:
+ Screen [N] = (uint16) COLOR_SUB1_2 (ScreenColors [Pixel], Screen [GFX.Delta + N]);
+ break;
+ }
Depth [N] = GFX.Z2;
}
}
@@ -939,15 +960,18 @@ static void WRITE_4PIXELS16_FLIPPED_SUB1_2 (uint32 Offset, uint8 *Pixels, uint16
{
if (GFX.Z1 > Depth [N] && (Pixel = Pixels[3 - N]))
{
- if (SubDepth [N])
+ switch (SubDepth [N])
{
- if (SubDepth [N] != 1)
- Screen [N] = (uint16) COLOR_SUB1_2 (ScreenColors [Pixel], Screen [GFX.Delta + N]);
- else
- Screen [N] = (uint16) COLOR_SUB (ScreenColors [Pixel], GFX.FixedColour);
- }
- else
+ case 0:
Screen [N] = ScreenColors [Pixel];
+ break;
+ case 1:
+ Screen [N] = (uint16) COLOR_SUB (ScreenColors [Pixel], GFX.FixedColour);
+ break;
+ default:
+ Screen [N] = (uint16) COLOR_SUB1_2 (ScreenColors [Pixel], Screen [GFX.Delta + N]);
+ break;
+ }
Depth [N] = GFX.Z2;
}
}
@@ -957,10 +981,118 @@ static void WRITE_4PIXELS16_FLIPPED_SUB1_2 (uint32 Offset, uint8 *Pixels, uint16
void DrawTile16Add (uint32 Tile, uint32 Offset, uint32 StartLine,
uint32 LineCount)
{
- TILE_PREAMBLE
- register uint8 *bp;
+ TILE_PREAMBLE
+ register uint8 *bp;
+ uint8 Pixel;
+ uint16 *Screen = (uint16 *) GFX.S + Offset;
+ uint8 *Depth = GFX.ZBuffer + Offset;
+ uint8 *SubDepth = GFX.SubZBuffer + Offset;
- RENDER_TILE(WRITE_4PIXELS16_ADD, WRITE_4PIXELS16_FLIPPED_ADD, 4)
+ switch (Tile & (V_FLIP | H_FLIP))
+ {
+ case 0:
+ bp = pCache + StartLine;
+ for (l = LineCount; l != 0; l--, bp += 8, Screen += GFX.PPL, Depth += GFX.PPL, SubDepth += GFX.PPL)
+ {
+ for (uint8 N = 0; N < 8; N++)
+ {
+ if (GFX.Z1 > Depth [N] && (Pixel = bp[N]))
+ {
+ switch (SubDepth [N])
+ {
+ case 0:
+ Screen [N] = ScreenColors [Pixel];
+ break;
+ case 1:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], GFX.FixedColour);
+ break;
+ default:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], Screen [GFX.Delta + N]);
+ break;
+ }
+ Depth [N] = GFX.Z2;
+ }
+ }
+ }
+ break;
+ case H_FLIP:
+ bp = pCache + StartLine;
+ for (l = LineCount; l != 0; l--, bp += 8, Screen += GFX.PPL, Depth += GFX.PPL, SubDepth += GFX.PPL)
+ {
+ for (uint8 N = 0; N < 8; N++)
+ {
+ if (GFX.Z1 > Depth [N] && (Pixel = bp[7 - N]))
+ {
+ switch (SubDepth [N])
+ {
+ case 0:
+ Screen [N] = ScreenColors [Pixel];
+ break;
+ case 1:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], GFX.FixedColour);
+ break;
+ default:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], Screen [GFX.Delta + N]);
+ break;
+ }
+ Depth [N] = GFX.Z2;
+ }
+ }
+ }
+ break;
+ case H_FLIP | V_FLIP:
+ bp = pCache + 56 - StartLine;
+ for (l = LineCount; l != 0; l--, bp -= 8, Screen += GFX.PPL, Depth += GFX.PPL, SubDepth += GFX.PPL)
+ {
+ for (uint8 N = 0; N < 8; N++)
+ {
+ if (GFX.Z1 > Depth [N] && (Pixel = bp[7 - N]))
+ {
+ switch (SubDepth [N])
+ {
+ case 0:
+ Screen [N] = ScreenColors [Pixel];
+ break;
+ case 1:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], GFX.FixedColour);
+ break;
+ default:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], Screen [GFX.Delta + N]);
+ break;
+ }
+ Depth [N] = GFX.Z2;
+ }
+ }
+ }
+ break;
+ case V_FLIP:
+ bp = pCache + 56 - StartLine;
+ for (l = LineCount; l != 0; l--, bp -= 8, Screen += GFX.PPL, Depth += GFX.PPL, SubDepth += GFX.PPL)
+ {
+ for (uint8 N = 0; N < 8; N++)
+ {
+ if (GFX.Z1 > Depth [N] && (Pixel = bp[N]))
+ {
+ switch (SubDepth [N])
+ {
+ case 0:
+ Screen [N] = ScreenColors [Pixel];
+ break;
+ case 1:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], GFX.FixedColour);
+ break;
+ default:
+ Screen [N] = COLOR_ADD (ScreenColors [Pixel], Screen [GFX.Delta + N]);
+ break;
+ }
+ Depth [N] = GFX.Z2;
+ }
+ }
+ }
+ break;
+ default:
+ break;
+ }
}
void DrawClippedTile16Add (uint32 Tile, uint32 Offset,
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 05:19:17 +0000