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only do lower-pixel rendering when rendering under an edge

This commit is contained in:
StapleButter 2017-06-01 15:16:44 +02:00
parent d1781c8bf2
commit 77d0a0d76e
1 changed files with 12 additions and 2 deletions
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14
src/GPU3D_Soft.cpp
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@ -1027,10 +1027,14 @@ void RenderPolygonScanline(RendererPolygon* rp, s32 y)
continue;
}
u32 dstattr = AttrBuffer[pixeladdr];
// if depth test against the topmost pixel fails, test
// against the pixel underneath
if (!fnDepthTest(DepthBuffer[pixeladdr], z))
{
if (!(dstattr & 0x3)) continue;
pixeladdr += 258;
if (!fnDepthTest(DepthBuffer[pixeladdr], z))
continue;
@ -1096,7 +1100,6 @@ void RenderPolygonScanline(RendererPolygon* rp, s32 y)
}
else
{
u32 dstattr = AttrBuffer[pixeladdr];
attr |= (1<<30);
if (polygon->IsShadow) dstattr |= (1<<30);
@ -1148,10 +1151,14 @@ void RenderPolygonScanline(RendererPolygon* rp, s32 y)
continue;
}
u32 dstattr = AttrBuffer[pixeladdr];
// if depth test against the topmost pixel fails, test
// against the pixel underneath
if (!fnDepthTest(DepthBuffer[pixeladdr], z))
{
if (!(dstattr & 0x3)) continue;
pixeladdr += 258;
if (!fnDepthTest(DepthBuffer[pixeladdr], z))
continue;
@ -1244,10 +1251,14 @@ void RenderPolygonScanline(RendererPolygon* rp, s32 y)
continue;
}
u32 dstattr = AttrBuffer[pixeladdr];
// if depth test against the topmost pixel fails, test
// against the pixel underneath
if (!fnDepthTest(DepthBuffer[pixeladdr], z))
{
if (!(dstattr & 0x3)) continue;
pixeladdr += 258;
if (!fnDepthTest(DepthBuffer[pixeladdr], z))
continue;
@ -1313,7 +1324,6 @@ void RenderPolygonScanline(RendererPolygon* rp, s32 y)
}
else
{
u32 dstattr = AttrBuffer[pixeladdr];
attr |= (1<<30);
if (polygon->IsShadow) dstattr |= (1<<30);