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3D: attempt at fixing that shadow/AA interaction bug in the MKDS character select screen

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This commit is contained in:
StapleButter 2018-10-22 01:36:04 +02:00
parent d191af8690
commit 4075dad0a8
1 changed files with 43 additions and 7 deletions
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50
src/GPU3D_Soft.cpp
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@ -1229,7 +1229,14 @@ void RenderShadowMaskScanline(RendererPolygon* rp, s32 y)
continue;
if (!fnDepthTest(DepthBuffer[pixeladdr], z, dstattr))
StencilBuffer[256*(y&0x1) + x] = 1;
StencilBuffer[256*(y&0x1) + x] |= 0x1;
if (dstattr & 0x3)
{
pixeladdr += BufferSize;
if (!fnDepthTest(DepthBuffer[pixeladdr], z, AttrBuffer[pixeladdr]))
StencilBuffer[256*(y&0x1) + x] |= 0x2;
}
}
// part 2: polygon inside
@ -1247,6 +1254,13 @@ void RenderShadowMaskScanline(RendererPolygon* rp, s32 y)
if (!fnDepthTest(DepthBuffer[pixeladdr], z, dstattr))
StencilBuffer[256*(y&0x1) + x] = 1;
if (dstattr & 0x3)
{
pixeladdr += BufferSize;
if (!fnDepthTest(DepthBuffer[pixeladdr], z, AttrBuffer[pixeladdr]))
StencilBuffer[256*(y&0x1) + x] |= 0x2;
}
}
// part 3: right edge
@ -1268,6 +1282,13 @@ void RenderShadowMaskScanline(RendererPolygon* rp, s32 y)
if (!fnDepthTest(DepthBuffer[pixeladdr], z, dstattr))
StencilBuffer[256*(y&0x1) + x] = 1;
if (dstattr & 0x3)
{
pixeladdr += BufferSize;
if (!fnDepthTest(DepthBuffer[pixeladdr], z, AttrBuffer[pixeladdr]))
StencilBuffer[256*(y&0x1) + x] |= 0x2;
}
}
rp->XL = rp->SlopeL.Step();
@ -1425,18 +1446,23 @@ void RenderPolygonScanline(RendererPolygon* rp, s32 y)
for (; x < xlimit; x++)
{
u32 pixeladdr = FirstPixelOffset + (y*ScanlineWidth) + x;
u32 dstattr = AttrBuffer[pixeladdr];
// check stencil buffer for shadows
if (polygon->IsShadow)
{
if (StencilBuffer[256*(y&0x1) + x] == 0)
u8 stencil = StencilBuffer[256*(y&0x1) + x];
if (!stencil)
continue;
if (!(stencil & 0x1))
pixeladdr += BufferSize;
if (!(stencil & 0x2))
dstattr &= ~0x3; // quick way to prevent drawing the shadow under antialiased edges
}
interpX.SetX(x);
s32 z = interpX.InterpolateZ(zl, zr, polygon->WBuffer);
u32 dstattr = AttrBuffer[pixeladdr];
// if depth test against the topmost pixel fails, test
// against the pixel underneath
@ -1514,18 +1540,23 @@ void RenderPolygonScanline(RendererPolygon* rp, s32 y)
else for (; x < xlimit; x++)
{
u32 pixeladdr = FirstPixelOffset + (y*ScanlineWidth) + x;
u32 dstattr = AttrBuffer[pixeladdr];
// check stencil buffer for shadows
if (polygon->IsShadow)
{
if (StencilBuffer[256*(y&0x1) + x] == 0)
u8 stencil = StencilBuffer[256*(y&0x1) + x];
if (!stencil)
continue;
if (!(stencil & 0x1))
pixeladdr += BufferSize;
if (!(stencil & 0x2))
dstattr &= ~0x3; // quick way to prevent drawing the shadow under antialiased edges
}
interpX.SetX(x);
s32 z = interpX.InterpolateZ(zl, zr, polygon->WBuffer);
u32 dstattr = AttrBuffer[pixeladdr];
// if depth test against the topmost pixel fails, test
// against the pixel underneath
@ -1582,18 +1613,23 @@ void RenderPolygonScanline(RendererPolygon* rp, s32 y)
for (; x < xlimit; x++)
{
u32 pixeladdr = FirstPixelOffset + (y*ScanlineWidth) + x;
u32 dstattr = AttrBuffer[pixeladdr];
// check stencil buffer for shadows
if (polygon->IsShadow)
{
if (StencilBuffer[256*(y&0x1) + x] == 0)
u8 stencil = StencilBuffer[256*(y&0x1) + x];
if (!stencil)
continue;
if (!(stencil & 0x1))
pixeladdr += BufferSize;
if (!(stencil & 0x2))
dstattr &= ~0x3; // quick way to prevent drawing the shadow under antialiased edges
}
interpX.SetX(x);
s32 z = interpX.InterpolateZ(zl, zr, polygon->WBuffer);
u32 dstattr = AttrBuffer[pixeladdr];
// if depth test against the topmost pixel fails, test
// against the pixel underneath