mirror of https://github.com/snes9xgit/snes9x.git
469 lines
13 KiB
C++
469 lines
13 KiB
C++
/*****************************************************************************\
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Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
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This file is licensed under the Snes9x License.
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For further information, consult the LICENSE file in the root directory.
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\*****************************************************************************/
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#include "snes9x.h"
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#include "2xsai.h"
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#define ALL_COLOR_MASK (FIRST_COLOR_MASK | SECOND_COLOR_MASK | THIRD_COLOR_MASK)
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#define colorMask (((~RGB_LOW_BITS_MASK & ALL_COLOR_MASK) << 16) | (~RGB_LOW_BITS_MASK & ALL_COLOR_MASK))
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#define qcolorMask (((~TWO_LOW_BITS_MASK & ALL_COLOR_MASK) << 16) | (~TWO_LOW_BITS_MASK & ALL_COLOR_MASK))
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#define lowPixelMask ((RGB_LOW_BITS_MASK << 16) | RGB_LOW_BITS_MASK)
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#define qlowpixelMask ((TWO_LOW_BITS_MASK << 16) | TWO_LOW_BITS_MASK)
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static inline int GetResult (uint32, uint32, uint32, uint32);
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static inline int GetResult1 (uint32, uint32, uint32, uint32, uint32);
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static inline int GetResult2 (uint32, uint32, uint32, uint32, uint32);
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static inline uint32 INTERPOLATE (uint32, uint32);
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static inline uint32 Q_INTERPOLATE (uint32, uint32, uint32, uint32);
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static inline int GetResult (uint32 A, uint32 B, uint32 C, uint32 D)
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{
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int x = 0, y = 0, r = 0;
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if (A == C) x += 1; else if (B == C) y += 1;
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if (A == D) x += 1; else if (B == D) y += 1;
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if (x <= 1) r += 1;
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if (y <= 1) r -= 1;
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return (r);
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}
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static inline int GetResult1 (uint32 A, uint32 B, uint32 C, uint32 D, uint32 E)
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{
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int x = 0, y = 0, r = 0;
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if (A == C) x += 1; else if (B == C) y += 1;
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if (A == D) x += 1; else if (B == D) y += 1;
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if (x <= 1) r += 1;
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if (y <= 1) r -= 1;
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return (r);
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}
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static inline int GetResult2 (uint32 A, uint32 B, uint32 C, uint32 D, uint32 E)
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{
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int x = 0, y = 0, r = 0;
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if (A == C) x += 1; else if (B == C) y += 1;
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if (A == D) x += 1; else if (B == D) y += 1;
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if (x <= 1) r -= 1;
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if (y <= 1) r += 1;
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return (r);
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}
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static inline uint32 INTERPOLATE (uint32 A, uint32 B)
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{
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return (((A & colorMask) >> 1) + ((B & colorMask) >> 1) + (A & B & lowPixelMask));
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}
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static inline uint32 Q_INTERPOLATE (uint32 A, uint32 B, uint32 C, uint32 D)
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{
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uint32 x = ((A & qcolorMask) >> 2) + ((B & qcolorMask) >> 2) + ((C & qcolorMask) >> 2) + ((D & qcolorMask) >> 2);
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uint32 y = (A & qlowpixelMask) + (B & qlowpixelMask) + (C & qlowpixelMask) + (D & qlowpixelMask);
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y = (y >> 2) & qlowpixelMask;
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return (x + y);
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}
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bool8 S9xBlit2xSaIFilterInit (void)
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{
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return (TRUE);
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}
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void S9xBlit2xSaIFilterDeinit (void)
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{
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return;
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}
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void SuperEagle (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
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{
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uint16 *bP;
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uint32 *dP;
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uint32 nextline = srcRowBytes >> 1;
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for (; height; height--)
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{
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bP = (uint16 *) srcPtr;
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dP = (uint32 *) dstPtr;
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for (int i = 0; i < width; i++)
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{
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uint32 color1, color2, color3, color4, color5, color6;
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uint32 colorA1, colorA2, colorB1, colorB2, colorS1, colorS2;
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uint32 product1a, product1b, product2a, product2b;
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colorB1 = *(bP - nextline );
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colorB2 = *(bP - nextline + 1);
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color4 = *(bP - 1);
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color5 = *(bP );
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color6 = *(bP + 1);
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colorS2 = *(bP + 2);
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color1 = *(bP + nextline - 1);
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color2 = *(bP + nextline );
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color3 = *(bP + nextline + 1);
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colorS1 = *(bP + nextline + 2);
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colorA1 = *(bP + nextline + nextline );
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colorA2 = *(bP + nextline + nextline + 1);
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if (color2 == color6 && color5 != color3)
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{
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product1b = product2a = color2;
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if ((color1 == color2 && color6 == colorS2) || (color2 == colorA1 && color6 == colorB2))
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{
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product1a = INTERPOLATE(color2, color5);
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product1a = INTERPOLATE(color2, product1a);
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product2b = INTERPOLATE(color2, color3);
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product2b = INTERPOLATE(color2, product2b);
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}
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else
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{
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product1a = INTERPOLATE(color5, color6);
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product2b = INTERPOLATE(color2, color3);
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}
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}
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else
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if (color5 == color3 && color2 != color6)
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{
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product2b = product1a = color5;
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if ((colorB1 == color5 && color3 == colorA2) || (color4 == color5 && color3 == colorS1))
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{
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product1b = INTERPOLATE(color5, color6);
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product1b = INTERPOLATE(color5, product1b);
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product2a = INTERPOLATE(color5, color2);
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product2a = INTERPOLATE(color5, product2a);
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}
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else
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{
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product1b = INTERPOLATE(color5, color6);
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product2a = INTERPOLATE(color2, color3);
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}
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}
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else
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if (color5 == color3 && color2 == color6 && color5 != color6)
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{
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int r = 0;
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r += GetResult(color6, color5, color1, colorA1);
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r += GetResult(color6, color5, color4, colorB1);
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r += GetResult(color6, color5, colorA2, colorS1);
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r += GetResult(color6, color5, colorB2, colorS2);
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if (r > 0)
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{
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product1b = product2a = color2;
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product1a = product2b = INTERPOLATE(color5, color6);
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}
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else
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if (r < 0)
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{
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product2b = product1a = color5;
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product1b = product2a = INTERPOLATE(color5, color6);
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}
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else
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{
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product2b = product1a = color5;
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product1b = product2a = color2;
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}
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}
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else
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{
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if ((color2 == color5) || (color3 == color6))
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{
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product1a = color5;
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product2a = color2;
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product1b = color6;
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product2b = color3;
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}
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else
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{
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product1b = product1a = INTERPOLATE(color5, color6);
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product1a = INTERPOLATE(color5, product1a);
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product1b = INTERPOLATE(color6, product1b);
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product2a = product2b = INTERPOLATE(color2, color3);
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product2a = INTERPOLATE(color2, product2a);
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product2b = INTERPOLATE(color3, product2b);
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}
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}
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#ifdef MSB_FIRST
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product1a = (product1a << 16) | product1b;
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product2a = (product2a << 16) | product2b;
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#else
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product1a = product1a | (product1b << 16);
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product2a = product2a | (product2b << 16);
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#endif
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*(dP) = product1a;
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*(dP + (dstRowBytes >> 2)) = product2a;
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bP++;
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dP++;
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}
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dstPtr += dstRowBytes << 1;
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srcPtr += srcRowBytes;
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}
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}
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void _2xSaI (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
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{
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uint16 *bP;
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uint32 *dP;
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uint32 nextline = srcRowBytes >> 1;
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for (; height; height--)
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{
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bP = (uint16 *) srcPtr;
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dP = (uint32 *) dstPtr;
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for (int i = 0; i < width; i++)
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{
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uint32 colorA, colorB, colorC, colorD, colorE, colorF, colorG, colorH, colorI, colorJ, colorK, colorL, colorM, colorN, colorO, colorP;
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uint32 product, product1, product2;
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colorI = *(bP - nextline - 1);
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colorE = *(bP - nextline );
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colorF = *(bP - nextline + 1);
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colorJ = *(bP - nextline + 2);
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colorG = *(bP - 1);
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colorA = *(bP );
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colorB = *(bP + 1);
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colorK = *(bP + 2);
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colorH = *(bP + nextline - 1);
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colorC = *(bP + nextline );
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colorD = *(bP + nextline + 1);
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colorL = *(bP + nextline + 2);
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colorM = *(bP + nextline + nextline - 1);
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colorN = *(bP + nextline + nextline );
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colorO = *(bP + nextline + nextline + 1);
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colorP = *(bP + nextline + nextline + 2);
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if ((colorA == colorD) && (colorB != colorC))
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{
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if (((colorA == colorE) && (colorB == colorL)) || ((colorA == colorC) && (colorA == colorF) && (colorB != colorE) && (colorB == colorJ)))
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product = colorA;
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else
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product = INTERPOLATE(colorA, colorB);
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if (((colorA == colorG) && (colorC == colorO)) || ((colorA == colorB) && (colorA == colorH) && (colorG != colorC) && (colorC == colorM)))
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product1 = colorA;
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else
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product1 = INTERPOLATE(colorA, colorC);
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product2 = colorA;
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}
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else
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if ((colorB == colorC) && (colorA != colorD))
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{
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if (((colorB == colorF) && (colorA == colorH)) || ((colorB == colorE) && (colorB == colorD) && (colorA != colorF) && (colorA == colorI)))
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product = colorB;
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else
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product = INTERPOLATE(colorA, colorB);
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if (((colorC == colorH) && (colorA == colorF)) || ((colorC == colorG) && (colorC == colorD) && (colorA != colorH) && (colorA == colorI)))
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product1 = colorC;
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else
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product1 = INTERPOLATE(colorA, colorC);
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product2 = colorB;
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}
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else
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if ((colorA == colorD) && (colorB == colorC))
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{
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if (colorA == colorB)
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{
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product = colorA;
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product1 = colorA;
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product2 = colorA;
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}
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else
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{
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int r = 0;
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product1 = INTERPOLATE(colorA, colorC);
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product = INTERPOLATE(colorA, colorB);
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r += GetResult1(colorA, colorB, colorG, colorE, colorI);
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r += GetResult2(colorB, colorA, colorK, colorF, colorJ);
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r += GetResult2(colorB, colorA, colorH, colorN, colorM);
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r += GetResult1(colorA, colorB, colorL, colorO, colorP);
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if (r > 0)
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product2 = colorA;
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else
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if (r < 0)
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product2 = colorB;
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else
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product2 = Q_INTERPOLATE(colorA, colorB, colorC, colorD);
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}
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}
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else
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{
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product2 = Q_INTERPOLATE(colorA, colorB, colorC, colorD);
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if ((colorA == colorC) && (colorA == colorF) && (colorB != colorE) && (colorB == colorJ))
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product = colorA;
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else
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if ((colorB == colorE) && (colorB == colorD) && (colorA != colorF) && (colorA == colorI))
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product = colorB;
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else
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product = INTERPOLATE(colorA, colorB);
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if ((colorA == colorB) && (colorA == colorH) && (colorG != colorC) && (colorC == colorM))
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product1 = colorA;
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else
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if ((colorC == colorG) && (colorC == colorD) && (colorA != colorH) && (colorA == colorI))
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product1 = colorC;
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else
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product1 = INTERPOLATE(colorA, colorC);
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}
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#ifdef MSB_FIRST
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product = (colorA << 16) | product;
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product1 = (product1 << 16) | product2;
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#else
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product = colorA | (product << 16);
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product1 = product1 | (product2 << 16);
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#endif
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*(dP) = product;
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*(dP + (dstRowBytes >> 2)) = product1;
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bP++;
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dP++;
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}
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dstPtr += dstRowBytes << 1;
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srcPtr += srcRowBytes;
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}
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}
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void Super2xSaI (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
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{
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uint16 *bP;
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uint32 *dP;
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uint32 nextline = srcRowBytes >> 1;
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for (; height; height--)
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{
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bP = (uint16 *) srcPtr;
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dP = (uint32 *) dstPtr;
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for (int i = 0; i < width; i++)
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{
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uint32 color1, color2, color3, color4, color5, color6;
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uint32 colorA0, colorA1, colorA2, colorA3, colorB0, colorB1, colorB2, colorB3, colorS1, colorS2;
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uint32 product1a, product1b, product2a, product2b;
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colorB0 = *(bP - nextline - 1);
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colorB1 = *(bP - nextline );
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colorB2 = *(bP - nextline + 1);
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colorB3 = *(bP - nextline + 2);
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color4 = *(bP - 1);
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color5 = *(bP );
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color6 = *(bP + 1);
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colorS2 = *(bP + 2);
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color1 = *(bP + nextline - 1);
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color2 = *(bP + nextline );
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color3 = *(bP + nextline + 1);
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colorS1 = *(bP + nextline + 2);
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colorA0 = *(bP + nextline + nextline - 1);
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colorA1 = *(bP + nextline + nextline );
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colorA2 = *(bP + nextline + nextline + 1);
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colorA3 = *(bP + nextline + nextline + 2);
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if (color2 == color6 && color5 != color3)
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product2b = product1b = color2;
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else
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if (color5 == color3 && color2 != color6)
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product2b = product1b = color5;
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else
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if (color5 == color3 && color2 == color6 && color5 != color6)
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{
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int r = 0;
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r += GetResult(color6, color5, color1, colorA1);
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r += GetResult(color6, color5, color4, colorB1);
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r += GetResult(color6, color5, colorA2, colorS1);
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r += GetResult(color6, color5, colorB2, colorS2);
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if (r > 0)
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product2b = product1b = color6;
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else
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if (r < 0)
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product2b = product1b = color5;
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else
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product2b = product1b = INTERPOLATE(color5, color6);
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}
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else
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{
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if (color6 == color3 && color3 == colorA1 && color2 != colorA2 && color3 != colorA0)
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product2b = Q_INTERPOLATE(color3, color3, color3, color2);
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else
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if (color5 == color2 && color2 == colorA2 && colorA1 != color3 && color2 != colorA3)
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product2b = Q_INTERPOLATE(color2, color2, color2, color3);
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else
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product2b = INTERPOLATE(color2, color3);
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if (color6 == color3 && color6 == colorB1 && color5 != colorB2 && color6 != colorB0)
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product1b = Q_INTERPOLATE(color6, color6, color6, color5);
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else
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if (color5 == color2 && color5 == colorB2 && colorB1 != color6 && color5 != colorB3)
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product1b = Q_INTERPOLATE(color6, color5, color5, color5);
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else
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product1b = INTERPOLATE (color5, color6);
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}
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if (color5 == color3 && color2 != color6 && color4 == color5 && color5 != colorA2)
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product2a = INTERPOLATE(color2, color5);
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else
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if (color5 == color1 && color6 == color5 && color4 != color2 && color5 != colorA0)
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product2a = INTERPOLATE(color2, color5);
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else
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product2a = color2;
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if (color2 == color6 && color5 != color3 && color1 == color2 && color2 != colorB2)
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product1a = INTERPOLATE(color2, color5);
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else
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if (color4 == color2 && color3 == color2 && color1 != color5 && color2 != colorB0)
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product1a = INTERPOLATE(color2, color5);
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else
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product1a = color5;
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#ifdef MSB_FIRST
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product1a = (product1a << 16) | product1b;
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product2a = (product2a << 16) | product2b;
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#else
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product1a = product1a | (product1b << 16);
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product2a = product2a | (product2b << 16);
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#endif
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*(dP) = product1a;
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*(dP +(dstRowBytes >> 2)) = product2a;
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bP++;
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dP++;
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}
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dstPtr += dstRowBytes << 1;
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srcPtr += srcRowBytes;
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}
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}
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