diff options
Diffstat (limited to 'src/GPU3D_Soft.cpp')
| -rw-r--r-- | src/GPU3D_Soft.cpp | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/src/GPU3D_Soft.cpp b/src/GPU3D_Soft.cpp index 649f01f..55dd906 100644 --- a/src/GPU3D_Soft.cpp +++ b/src/GPU3D_Soft.cpp @@ -129,14 +129,14 @@ public: return y0 + (((y1 - y0) * x) / xdiff); } - s32 InterpolateZ(s32 y0, s32 y1) + s32 InterpolateZ(s32 z0, s32 z1, bool wbuffer) { - if (xdiff == 0) return y0; + if (xdiff == 0) return z0; - if (wdiff != 0) - return y0 + (((s64)(y1 - y0) * yfactor) >> shift); + if ((wdiff != 0) && wbuffer) + return z0 + (((s64)(z1 - z0) * yfactor) >> shift); else - return y0 + (((s64)(y1 - y0) * x) / xdiff); + return z0 + (((s64)(z1 - z0) * x) / xdiff); } private: @@ -806,8 +806,8 @@ void RenderPolygon(Polygon* polygon) s32 wl = slopeL.Interp.Interpolate(polygon->FinalW[lcur], polygon->FinalW[lnext]); s32 wr = slopeR.Interp.Interpolate(polygon->FinalW[rcur], polygon->FinalW[rnext]); - s32 zl = slopeL.Interp.InterpolateZ(polygon->FinalZ[lcur], polygon->FinalZ[lnext]); - s32 zr = slopeR.Interp.InterpolateZ(polygon->FinalZ[rcur], polygon->FinalZ[rnext]); + s32 zl = slopeL.Interp.InterpolateZ(polygon->FinalZ[lcur], polygon->FinalZ[lnext], polygon->WBuffer); + s32 zr = slopeR.Interp.InterpolateZ(polygon->FinalZ[rcur], polygon->FinalZ[rnext], polygon->WBuffer); // if the left and right edges are swapped, render backwards. // note: we 'forget' to swap the xmajor flags, on purpose @@ -928,7 +928,7 @@ void RenderPolygon(Polygon* polygon) interpX.SetX(x); - s32 z = interpX.InterpolateZ(zl, zr); + s32 z = interpX.InterpolateZ(zl, zr, polygon->WBuffer); if (polygon->IsShadowMask) { |