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calculate hi-res vertex positions. reduces shaking of polygons when rendering at a higher res.

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Arisotura
2019-05-11 15:14:59 +02:00
parent 5c9df6a4e5
commit 53b2262917
3 changed files with 19 additions and 1 deletions
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10
src/GPU3D.cpp
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@ -1194,6 +1194,16 @@ void SubmitPolygon()
vtx->FinalPosition[0] = posX & 0x1FF;
vtx->FinalPosition[1] = posY & 0xFF;
// hi-res positions
if (w != 0)
{
posX = ((((s64)(vtx->Position[0] + w) * Viewport[4]) << 4) / (((s64)w) << 1)) + (Viewport[0] << 4);
posY = ((((s64)(-vtx->Position[1] + w) * Viewport[5]) << 4) / (((s64)w) << 1)) + (Viewport[3] << 4);
vtx->HiresPosition[0] = posX & 0x1FFF;
vtx->HiresPosition[1] = posY & 0xFFF;
}
vtx->FinalColor[0] = vtx->Color[0] >> 12;
if (vtx->FinalColor[0]) vtx->FinalColor[0] = ((vtx->FinalColor[0] << 4) + 0xF);
vtx->FinalColor[1] = vtx->Color[1] >> 12;