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Improve(?) edge marking check

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fixes a bug
makes the code 200% uglier to look at though
This commit is contained in:
Jaklyy 2024-03-05 19:28:20 -05:00
parent bbbd56877d
commit 52e097d97c
1 changed files with 42 additions and 9 deletions
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51
src/GPU3D_Soft.cpp
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@ -1578,17 +1578,50 @@ void SoftRenderer::ScanlineFinalPass(const GPU3D& gpu3d, s32 y, bool checkprev,
u32 polyid = attr >> 24; // opaque polygon IDs are used for edgemarking
u32 z = DepthBuffer[pixeladdr];
bool doit = false;
if ((checkprev && (x == 0) && CheckEdgeMarkingClearPlane(gpu3d, polyid, z)) || // left
(checknext && (x == 255) && CheckEdgeMarkingClearPlane(gpu3d, polyid, z)) || // right
((y == 0) && CheckEdgeMarkingClearPlane(gpu3d, polyid, z)) || // top
((y == 191) && CheckEdgeMarkingClearPlane(gpu3d, polyid, z)) || // bottom
((x != 0) && CheckEdgeMarkingPixel(polyid, z, pixeladdr-1)) || // left
((x != 255) && CheckEdgeMarkingPixel(polyid, z, pixeladdr+1)) || // right
((y != 0) && CheckEdgeMarkingPixel(polyid, z, pixeladdr-ScanlineWidth)) || // top
((y != 191) && CheckEdgeMarkingPixel(polyid, z, pixeladdr+ScanlineWidth))) // bottom
// check the pixel to the left
if (x == 0)
{
// edge marking bug emulation
if (checkprev)
{
if (CheckEdgeMarkingClearPlane(gpu3d, polyid, z)) goto pass; // check against the clear plane
}
else if (CheckEdgeMarkingPixel(polyid, z, pixeladdr-(ScanlineWidth+1))) goto pass; // checks the right edge of the scanline 2 scanlines ago
}
else if (CheckEdgeMarkingPixel(polyid, z, pixeladdr-1)) goto pass; // normal check
// check the pixel to the right
if (x == 255)
{
// edge marking bug emulation
if (checknext)
{
if (CheckEdgeMarkingClearPlane(gpu3d, polyid, z)) goto pass; // check against the clear plane
}
else if (CheckEdgeMarkingPixel(polyid, z, pixeladdr+(ScanlineWidth+1))) goto pass; // checks the left edge of the scanline 2 scanlines ahead
}
else if (CheckEdgeMarkingPixel(polyid, z, pixeladdr+1)) goto pass; // normal check
// check the pixel above
if (y == 0)
{
// edge marking bug emulation
if (CheckEdgeMarkingClearPlane(gpu3d, polyid, z)) goto pass; // check against the clear plane
}
else if (CheckEdgeMarkingPixel(polyid, z, pixeladdr-ScanlineWidth)) goto pass; // normal check
// check the pixel below
if (y == 191)
{
// edge marking bug emulation
if (CheckEdgeMarkingClearPlane(gpu3d, polyid, z)) goto pass; // check against the clear plane
}
else if (CheckEdgeMarkingPixel(polyid, z, pixeladdr+ScanlineWidth)) goto pass; // normal check
if (false)
{
pass:
u16 edgecolor = gpu3d.RenderEdgeTable[polyid >> 3];
u32 edgeR = (edgecolor << 1) & 0x3E; if (edgeR) edgeR++;
u32 edgeG = (edgecolor >> 4) & 0x3E; if (edgeG) edgeG++;