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ok this one actually works

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This commit is contained in:
Jaklyy
2023-12-10 19:22:30 -05:00
parent 2bf033e0bc
commit 0d6a8e0fb9
2 changed files with 18 additions and 9 deletions
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25
src/GPU3D_Soft.cpp
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@ -129,27 +129,36 @@ bool SoftRenderer::DoTimings(s32 cycles, bool odd)
return true;
}
s32 SoftRenderer::DoTimingsPixels(u32 pixels, bool odd)
u32 SoftRenderer::DoTimingsPixels(u32 pixels, bool odd)
{
// return the difference between the old span and the new span
if (pixels <= 4) return 0;
u32 pixeltiming = (pixels - 4) * RasterFrac;
u32 pixelsremain = pixels-4;
u32 timinglimit = RasterTimingCap - RasterTimingCounterPrev;
//todo: do this without a for loop somehow.
if (odd)
{
u32 rasterend = RasterTimingCap - (RasterTimingCounterOdd + RasterTimingCounterPrev);
pixeltiming = rasterend - pixeltiming;
for (; pixelsremain > 0; pixelsremain--)
{
RasterTimingCounterOdd += RasterFrac;
if (RasterTimingCounterOdd >= timinglimit) break;
}
}
else
{
u32 rasterend = RasterTimingCap - (RasterTimingCounterEven + RasterTimingCounterPrev);
pixeltiming = rasterend - pixeltiming;
for (; pixelsremain > 0; pixelsremain--)
{
RasterTimingCounterEven += RasterFrac;
if (RasterTimingCounterEven >= timinglimit) break;
}
}
if (pixeltiming > 0) return 0;
if (pixelsremain <= 0) return 0;
GPU.GPU3D.DispCnt |= (1<<12);
return pixels - (((pixeltiming + (RasterFrac-1)) / RasterFrac) + 4);
return pixelsremain;
}
void SoftRenderer::EndScanline(bool odd)