diff options
| -rw-r--r-- | src/GPU3D_Soft.cpp | 50 |
1 files changed, 43 insertions, 7 deletions
diff --git a/src/GPU3D_Soft.cpp b/src/GPU3D_Soft.cpp index 4560fd0..bb48c97 100644 --- a/src/GPU3D_Soft.cpp +++ b/src/GPU3D_Soft.cpp @@ -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 |