From 6fb0c7a7a53e1eba7a0f5dc5b1ade312a0d76119 Mon Sep 17 00:00:00 2001
From: Toad King
Date: Thu, 14 Jun 2012 03:21:06 -0400
Subject: initial pocketsnes commit

---
 src/tile16.h | 308 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 308 insertions(+)
 create mode 100644 src/tile16.h

(limited to 'src/tile16.h')

diff --git a/src/tile16.h b/src/tile16.h
new file mode 100644
index 0000000..3fc1be6
--- /dev/null
+++ b/src/tile16.h
@@ -0,0 +1,308 @@
+/*
+ * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
+ *
+ * (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) and
+ *                           Jerremy Koot (jkoot@snes9x.com)
+ *
+ * Super FX C emulator code 
+ * (c) Copyright 1997 - 1999 Ivar (ivar@snes9x.com) and
+ *                           Gary Henderson.
+ * Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_.
+ *
+ * DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson.
+ * C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_.
+ * C4 C code (c) Copyright 2001 Gary Henderson (gary.henderson@ntlworld.com).
+ *
+ * DOS port code contains the works of other authors. See headers in
+ * individual files.
+ *
+ * Snes9x homepage: http://www.snes9x.com
+ *
+ * Permission to use, copy, modify and distribute Snes9x in both binary and
+ * source form, for non-commercial purposes, is hereby granted without fee,
+ * providing that this license information and copyright notice appear with
+ * all copies and any derived work.
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event shall the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Snes9x is freeware for PERSONAL USE only. Commercial users should
+ * seek permission of the copyright holders first. Commercial use includes
+ * charging money for Snes9x or software derived from Snes9x.
+ *
+ * The copyright holders request that bug fixes and improvements to the code
+ * should be forwarded to them so everyone can benefit from the modifications
+ * in future versions.
+ *
+ * Super NES and Super Nintendo Entertainment System are trademarks of
+ * Nintendo Co., Limited and its subsidiary companies.
+ */
+#ifndef _TILE_H_
+#define _TILE_H_
+
+
+void SelectConvertTile();
+void SelectPalette();
+extern uint8 (*ConvertTile) (uint8 *pCache, uint32 TileAddr);
+
+extern uint32 TileBlank;
+
+#define TILE_PREAMBLE \
+    uint8 *pCache; \
+\
+    uint32 TileAddr = (BG.TileAddress + ((Tile & 0x3ff) << BG.TileShift)) & 0xffff; \
+\
+    uint32 TileNumber; \
+    pCache = &BG.Buffer[(TileNumber = (TileAddr >> BG.TileShift)) << 6]; \
+\
+    if (!BG.Buffered [TileNumber]) BG.Buffered[TileNumber] = ConvertTile (pCache, TileAddr); \
+\
+    if (BG.Buffered [TileNumber] == BLANK_TILE){ \
+		TileBlank = Tile; \
+		return; \
+	} \
+\
+    GFX.ScreenColors = &GFX.ScreenColorsPre[(Tile & GFX.PaletteMask) >> GFX.PaletteShift];
+
+#define RENDER_TILE(NORMAL, FLIPPED, N) \
+	register int	inc; \
+    if (!(Tile & V_FLIP)){ \
+		bp  = pCache + StartLine; \
+		inc = 8; \
+	} else { \
+		bp  = pCache + 56 - StartLine; \
+		inc = -8; \
+	} \
+ \
+	l = LineCount; \
+    if (!(Tile & H_FLIP)){ \
+		while ( l-- ){ \
+			NORMAL (Offset, bp); \
+			NORMAL (Offset + N, bp + 4); \
+			bp += inc, Offset += GFX_PPL; \
+		} \
+	} else { \
+		while ( l-- ){ \
+			FLIPPED (Offset, bp + 4); \
+			FLIPPED (Offset + N, bp); \
+			bp += inc, Offset += GFX_PPL; \
+		} \
+	}
+
+#define TILE_CLIP_PREAMBLE \
+    uint32 dd; \
+    uint32 d1; \
+    uint32 d2; \
+\
+    if (StartPixel < 4) \
+    { \
+	d1 = HeadMask [StartPixel]; \
+	if (StartPixel + Width < 4) \
+	    d1 &= TailMask [StartPixel + Width]; \
+    } \
+    else \
+	d1 = 0; \
+\
+    if (StartPixel + Width > 4) \
+    { \
+	if (StartPixel > 4) \
+	    d2 = HeadMask [StartPixel - 4]; \
+	else \
+	    d2 = 0xffffffff; \
+\
+	d2 &= TailMask [(StartPixel + Width - 4)]; \
+    } \
+    else \
+	d2 = 0;
+
+
+#define RENDER_CLIPPED_TILE(NORMAL, FLIPPED, N) \
+	register int	inc; \
+    if (Tile & V_FLIP){ \
+		bp  = pCache + 56 - StartLine; \
+		inc = -8; \
+	} else { \
+		bp  = pCache + StartLine; \
+		inc = 8; \
+	} \
+ \
+	l = LineCount; \
+    if (!(Tile & H_FLIP)){ \
+		while ( l-- ){ \
+		    if ((dd = (*(uint32 *) bp) & d1)) \
+			NORMAL (Offset, (uint8 *) &dd); \
+		    if ((dd = (*(uint32 *) (bp + 4)) & d2)) \
+			NORMAL (Offset + N, (uint8 *) &dd); \
+			bp += inc, Offset += GFX_PPL; \
+		} \
+	} else { \
+		SWAP_DWORD (d1); \
+		SWAP_DWORD (d2); \
+		while ( l-- ){ \
+		    if ((dd = *(uint32 *) (bp + 4) & d1)) \
+			FLIPPED (Offset, (uint8 *) &dd); \
+		    if ((dd = *(uint32 *) bp & d2)) \
+			FLIPPED (Offset + N, (uint8 *) &dd); \
+			bp += inc, Offset += GFX_PPL; \
+		} \
+	}
+
+#define RENDER_TILE_LARGE(PIXEL, FUNCTION) \
+    if (!(Tile & (V_FLIP | H_FLIP))) \
+    { \
+	if ((pixel = *(pCache + StartLine + StartPixel))) \
+	{ \
+	    pixel = PIXEL; \
+	    for (l = LineCount; l != 0; l--, sp += GFX_PPL, Depth += GFX_PPL) \
+	    { \
+		for (int z = Pixels - 1; z >= 0; z--) \
+		    if (GFX.Z1 > Depth [z]) \
+		    { \
+			sp [z] = FUNCTION(sp + z, pixel); \
+			Depth [z] = GFX.Z2; \
+		    }\
+	    } \
+	} \
+    } \
+    else \
+    if (!(Tile & V_FLIP)) \
+    { \
+	StartPixel = 7 - StartPixel; \
+	if ((pixel = *(pCache + StartLine + StartPixel))) \
+	{ \
+	    pixel = PIXEL; \
+	    for (l = LineCount; l != 0; l--, sp += GFX_PPL, Depth += GFX_PPL) \
+	    { \
+		for (int z = Pixels - 1; z >= 0; z--) \
+		    if (GFX.Z1 > Depth [z]) \
+		    { \
+			sp [z] = FUNCTION(sp + z, pixel); \
+			Depth [z] = GFX.Z2; \
+		    }\
+	    } \
+	} \
+    } \
+    else \
+    if (Tile & H_FLIP) \
+    { \
+	StartPixel = 7 - StartPixel; \
+	if ((pixel = *(pCache + 56 - StartLine + StartPixel))) \
+	{ \
+	    pixel = PIXEL; \
+	    for (l = LineCount; l != 0; l--, sp += GFX_PPL, Depth += GFX_PPL) \
+	    { \
+		for (int z = Pixels - 1; z >= 0; z--) \
+		    if (GFX.Z1 > Depth [z]) \
+		    { \
+			sp [z] = FUNCTION(sp + z, pixel); \
+			Depth [z] = GFX.Z2; \
+		    }\
+	    } \
+	} \
+    } \
+    else \
+    { \
+	if ((pixel = *(pCache + 56 - StartLine + StartPixel))) \
+	{ \
+	    pixel = PIXEL; \
+	    for (l = LineCount; l != 0; l--, sp += GFX_PPL, Depth += GFX_PPL) \
+	    { \
+		for (int z = Pixels - 1; z >= 0; z--) \
+		    if (GFX.Z1 > Depth [z]) \
+		    { \
+			sp [z] = FUNCTION(sp + z, pixel); \
+			Depth [z] = GFX.Z2; \
+		    }\
+	    } \
+	} \
+    }
+	
+#define RENDER_TILEHI(NORMAL, FLIPPED, N) \
+    if (!(Tile & (V_FLIP | H_FLIP))) \
+    { \
+	bp = pCache + StartLine; \
+	for (l = LineCount; l != 0; l--, bp += 8, Offset += GFX_PPL) \
+	{ \
+	    /*if (*(uint32 *) bp)*/if (((uint32)bp[0])|((uint32)bp[2])|((uint32)bp[4])|((uint32)bp[6])) \
+		NORMAL (Offset, bp); \
+	} \
+    } \
+    else \
+    if (!(Tile & V_FLIP)) \
+    { \
+	bp = pCache + StartLine; \
+	for (l = LineCount; l != 0; l--, bp += 8, Offset += GFX_PPL) \
+	{ \
+	    /*if (*(uint32 *) (bp + 4))*/if (((uint32)bp[0])|((uint32)bp[2])|((uint32)bp[4])|((uint32)bp[6])) \
+		FLIPPED (Offset, bp); \
+	} \
+    } \
+    else \
+    if (Tile & H_FLIP) \
+    { \
+	bp = pCache + 56 - StartLine; \
+	for (l = LineCount; l != 0; l--, bp -= 8, Offset += GFX_PPL) \
+	{ \
+	    /*if (*(uint32 *) (bp + 4))*/if (((uint32)bp[0])|((uint32)bp[2])|((uint32)bp[4])|((uint32)bp[6]))  \
+		FLIPPED (Offset, bp); \
+	} \
+    } \
+    else \
+    { \
+	bp = pCache + 56 - StartLine; \
+	for (l = LineCount; l != 0; l--, bp -= 8, Offset += GFX_PPL) \
+	{ \
+	    /*if (*(uint32 *) bp)*/if (((uint32)bp[0])|((uint32)bp[2])|((uint32)bp[4])|((uint32)bp[6])) \
+		NORMAL (Offset, bp); \
+	} \
+    }
+    
+    
+    
+#define RENDER_CLIPPED_TILEHI(NORMAL, FLIPPED, N) \
+	d1=(d1&0xFF)|((d1&0xFF0000)>>8)|((d2&0xFF)<<16)|((d2&0xFF0000)<<8);\
+    if (!(Tile & (V_FLIP | H_FLIP))) \
+    { \
+	bp = pCache + StartLine; \
+	for (l = LineCount; l != 0; l--, bp += 8, Offset += GFX_PPL) \
+	{ \
+	    /*if ((dd = (*(uint32 *) bp) & d1))*/if (dd = (((((uint32)bp[6])<<24)|(((uint32)bp[4])<<16)|(((uint32)bp[2])<<8)|((uint32)bp[0]))&d1)) \
+		NORMAL (Offset, (uint8 *) &dd); \
+	} \
+    } \
+    else \
+    if (!(Tile & V_FLIP)) \
+    { \
+	bp = pCache + StartLine; \
+	SWAP_DWORD (d1); \
+	/*SWAP_DWORD (d2);*/ \
+	for (l = LineCount; l != 0; l--, bp += 8, Offset += GFX_PPL) \
+	{ \
+	    /*if ((dd = *(uint32 *) (bp + 4) & d1))*/if (dd = (((((uint32)bp[6])<<24)|(((uint32)bp[4])<<16)|(((uint32)bp[2])<<8)|((uint32)bp[0]))&d1)) \
+		FLIPPED (Offset, (uint8 *) &dd); \
+	} \
+    } \
+    else \
+    if (Tile & H_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 *) (bp + 4) & d1))*/if (dd = (((((uint32)bp[6])<<24)|(((uint32)bp[4])<<16)|(((uint32)bp[2])<<8)|((uint32)bp[0]))&d1)) \
+		FLIPPED (Offset, (uint8 *) &dd); \
+	} \
+    } \
+    else \
+    { \
+	bp = pCache + 56 - StartLine; \
+	for (l = LineCount; l != 0; l--, bp -= 8, Offset += GFX_PPL) \
+	{ \
+	    /*if ((dd = (*(uint32 *) bp) & d1))*/ if (dd = (((((uint32)bp[6])<<24)|(((uint32)bp[4])<<16)|(((uint32)bp[2])<<8)|((uint32)bp[0]))&d1)) \
+		NORMAL (Offset, (uint8 *) &dd); \
+	} \
+    }    
+
+#endif
-- 
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