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Correct VI height calculation.

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This commit is contained in:
Sergey Lipskiy 2014-10-03 15:43:35 +07:00
parent d8a93a3aa3
commit ebedf49240
1 changed files with 10 additions and 5 deletions
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15
VI.cpp
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@ -27,8 +27,8 @@ void VI_UpdateSize()
const u32 hStart = _SHIFTR( *REG.VI_H_START, 16, 10 );
// These are in half-lines, so shift an extra bit
const u32 vEnd = _SHIFTR( *REG.VI_V_START, 1, 9 );
const u32 vStart = _SHIFTR( *REG.VI_V_START, 17, 9 );
const u32 vEnd = _SHIFTR( *REG.VI_V_START, 0, 10 );
const u32 vStart = _SHIFTR( *REG.VI_V_START, 16, 10 );
const bool interlacedPrev = VI.interlaced;
const u32 widthPrev = VI.width;
const u32 heightPrev = VI.height;
@ -38,15 +38,20 @@ void VI_UpdateSize()
VI.width = (u32)floor((hEnd - hStart) * xScale + 0.5f);
if (VI.interlaced && _SHIFTR(*REG.VI_Y_SCALE, 0, 12) == 1024)
VI.real_height = (vEnd - vStart) << 1;
VI.real_height = (vEnd - vStart);
else
VI.real_height = (u32)floor((vEnd - vStart) * yScale + 0.5f);
VI.real_height = (u32)floor(((vEnd - vStart)>>1) * yScale + 0.5f);
if (VI.interlaced && VI.real_height % 2 == 1)
--VI.real_height;
const bool isPAL = (*REG.VI_V_SYNC & 0x3ff) > 550;
if (isPAL && (vEnd - vStart) > 237)
if (isPAL && (vEnd - vStart) > 480)
VI.height = VI.real_height*1.0041841f;
else
VI.height = VI.real_height*1.0126582f;
// const int fsaa = ((*REG.VI_STATUS) >> 8) & 3;
// const int divot = ((*REG.VI_STATUS) >> 4) & 1;
if (VI.width == 0)
VI.width = *REG.VI_WIDTH;
if (VI.height == 0)