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gpu: fix some probably inaccurate math in 3d blending against 3d. the effects of this are subtle, but see if you think it helps any

This commit is contained in:
zeromus 2009-05-30 23:25:14 +00:00
parent 814078f2ae
commit 3ae63b6a0a
1 changed files with 24 additions and 24 deletions
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48
desmume/src/GPU.cpp
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@ -163,9 +163,9 @@ FORCEINLINE void GPU::setFinal3DColorSpecialNone(int dstX, int srcX)
c1.val = color;
c2.val = T2ReadWord(dst, passing);
cfinal.bits.red = ((c1.bits.red * alpha / 16) + (c2.bits.red * (16 - alpha) / 16));
cfinal.bits.green = ((c1.bits.green * alpha / 16) + (c2.bits.green * (16 - alpha) / 16));
cfinal.bits.blue = ((c1.bits.blue * alpha / 16) + (c2.bits.blue * (16 - alpha) / 16));
cfinal.bits.red = ((c1.bits.red * alpha) + (c2.bits.red * (16 - alpha)))/16;
cfinal.bits.green = ((c1.bits.green * alpha) + (c2.bits.green * (16 - alpha)))/16;
cfinal.bits.blue = ((c1.bits.blue * alpha) + (c2.bits.blue * (16 - alpha)))/16;
final = cfinal.val;
}
@ -201,9 +201,9 @@ FORCEINLINE void GPU::setFinal3DColorSpecialBlend(int dstX, int srcX)
c1.val = color;
c2.val = T2ReadWord(dst, passing);
cfinal.bits.red = ((c1.bits.red * alpha / 16) + (c2.bits.red * (16 - alpha) / 16));
cfinal.bits.green = ((c1.bits.green * alpha / 16) + (c2.bits.green * (16 - alpha) / 16));
cfinal.bits.blue = ((c1.bits.blue * alpha / 16) + (c2.bits.blue * (16 - alpha) / 16));
cfinal.bits.red = ((c1.bits.red * alpha ) + (c2.bits.red * (16 - alpha) )) / 16;
cfinal.bits.green = ((c1.bits.green * alpha ) + (c2.bits.green * (16 - alpha) )) / 16;
cfinal.bits.blue = ((c1.bits.blue * alpha ) + (c2.bits.blue * (16 - alpha) )) / 16;
final = cfinal.val;
}
@ -240,9 +240,9 @@ FORCEINLINE void GPU::setFinal3DColorSpecialIncrease(int dstX, int srcX)
c1.val = color;
c2.val = T2ReadWord(dst, passing);
cfinal.bits.red = ((c1.bits.red * alpha / 16) + (c2.bits.red * (16 - alpha) / 16));
cfinal.bits.green = ((c1.bits.green * alpha / 16) + (c2.bits.green * (16 - alpha) / 16));
cfinal.bits.blue = ((c1.bits.blue * alpha / 16) + (c2.bits.blue * (16 - alpha) / 16));
cfinal.bits.red = ((c1.bits.red * alpha ) + (c2.bits.red * (16 - alpha) ))/16;
cfinal.bits.green = ((c1.bits.green * alpha ) + (c2.bits.green * (16 - alpha) ))/16;
cfinal.bits.blue = ((c1.bits.blue * alpha ) + (c2.bits.blue * (16 - alpha) ))/16;
final = cfinal.val;
}
@ -288,9 +288,9 @@ FORCEINLINE void GPU::setFinal3DColorSpecialDecrease(int dstX, int srcX)
c1.val = color;
c2.val = T2ReadWord(dst, passing);
cfinal.bits.red = ((c1.bits.red * alpha / 16) + (c2.bits.red * (16 - alpha) / 16));
cfinal.bits.green = ((c1.bits.green * alpha / 16) + (c2.bits.green * (16 - alpha) / 16));
cfinal.bits.blue = ((c1.bits.blue * alpha / 16) + (c2.bits.blue * (16 - alpha) / 16));
cfinal.bits.red = ((c1.bits.red * alpha ) + (c2.bits.red * (16 - alpha) ))/16;
cfinal.bits.green = ((c1.bits.green * alpha ) + (c2.bits.green * (16 - alpha) ))/16;
cfinal.bits.blue = ((c1.bits.blue * alpha ) + (c2.bits.blue * (16 - alpha) ))/16;
final = cfinal.val;
}
@ -339,9 +339,9 @@ FORCEINLINE void GPU::setFinal3DColorSpecialNoneWnd(int dstX, int srcX)
c1.val = color;
c2.val = T2ReadWord(dst, passing);
cfinal.bits.red = ((c1.bits.red * alpha / 16) + (c2.bits.red * (16 - alpha) / 16));
cfinal.bits.green = ((c1.bits.green * alpha / 16) + (c2.bits.green * (16 - alpha) / 16));
cfinal.bits.blue = ((c1.bits.blue * alpha / 16) + (c2.bits.blue * (16 - alpha) / 16));
cfinal.bits.red = ((c1.bits.red * alpha ) + (c2.bits.red * (16 - alpha) ))/16;
cfinal.bits.green = ((c1.bits.green * alpha ) + (c2.bits.green * (16 - alpha) ))/16;
cfinal.bits.blue = ((c1.bits.blue * alpha ) + (c2.bits.blue * (16 - alpha) ))/16;
final = cfinal.val;
}
@ -384,9 +384,9 @@ FORCEINLINE void GPU::setFinal3DColorSpecialBlendWnd(int dstX, int srcX)
c1.val = color;
c2.val = T2ReadWord(dst, passing);
cfinal.bits.red = ((c1.bits.red * alpha / 16) + (c2.bits.red * (16 - alpha) / 16));
cfinal.bits.green = ((c1.bits.green * alpha / 16) + (c2.bits.green * (16 - alpha) / 16));
cfinal.bits.blue = ((c1.bits.blue * alpha / 16) + (c2.bits.blue * (16 - alpha) / 16));
cfinal.bits.red = ((c1.bits.red * alpha ) + (c2.bits.red * (16 - alpha) ))/16;
cfinal.bits.green = ((c1.bits.green * alpha ) + (c2.bits.green * (16 - alpha) ))/16;
cfinal.bits.blue = ((c1.bits.blue * alpha ) + (c2.bits.blue * (16 - alpha) ))/16;
final = cfinal.val;
}
@ -430,9 +430,9 @@ FORCEINLINE void GPU::setFinal3DColorSpecialIncreaseWnd(int dstX, int srcX)
c1.val = color;
c2.val = T2ReadWord(dst, passing);
cfinal.bits.red = ((c1.bits.red * alpha / 16) + (c2.bits.red * (16 - alpha) / 16));
cfinal.bits.green = ((c1.bits.green * alpha / 16) + (c2.bits.green * (16 - alpha) / 16));
cfinal.bits.blue = ((c1.bits.blue * alpha / 16) + (c2.bits.blue * (16 - alpha) / 16));
cfinal.bits.red = ((c1.bits.red * alpha ) + (c2.bits.red * (16 - alpha) ))/16;
cfinal.bits.green = ((c1.bits.green * alpha ) + (c2.bits.green * (16 - alpha) ))/16;
cfinal.bits.blue = ((c1.bits.blue * alpha ) + (c2.bits.blue * (16 - alpha) ))/16;
final = cfinal.val;
}
@ -484,9 +484,9 @@ FORCEINLINE void GPU::setFinal3DColorSpecialDecreaseWnd(int dstX, int srcX)
c1.val = color;
c2.val = T2ReadWord(dst, passing);
cfinal.bits.red = ((c1.bits.red * alpha / 16) + (c2.bits.red * (16 - alpha) / 16));
cfinal.bits.green = ((c1.bits.green * alpha / 16) + (c2.bits.green * (16 - alpha) / 16));
cfinal.bits.blue = ((c1.bits.blue * alpha / 16) + (c2.bits.blue * (16 - alpha) / 16));
cfinal.bits.red = ((c1.bits.red * alpha ) + (c2.bits.red * (16 - alpha) ))/16;
cfinal.bits.green = ((c1.bits.green * alpha ) + (c2.bits.green * (16 - alpha) ))/16;
cfinal.bits.blue = ((c1.bits.blue * alpha ) + (c2.bits.blue * (16 - alpha) ))/16;
final = cfinal.val;
}