diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/GPU3D_Soft.cpp | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/src/GPU3D_Soft.cpp b/src/GPU3D_Soft.cpp index f8c741b..23cf819 100644 --- a/src/GPU3D_Soft.cpp +++ b/src/GPU3D_Soft.cpp @@ -36,11 +36,7 @@ u32 AttrBuffer[256*192]; // bit24-29: polygon ID // bit30: translucent flag -u8 StencilBuffer[256*192]; - -// note: the stencil buffer isn't emulated properly. -// emulating it properly would require rendering polygons per-scanline -// the stencil buffer is normally limited to 2 scanlines +u8 StencilBuffer[256*2]; bool Init() @@ -751,8 +747,6 @@ void SetupPolygon(RendererPolygon* rp, Polygon* polygon) void RenderPolygonScanline(RendererPolygon* rp, s32 y) { - // TODO: shit - Polygon* polygon = rp->PolyData; u32 polyalpha = (polygon->Attr >> 16) & 0x1F; @@ -764,6 +758,9 @@ void RenderPolygonScanline(RendererPolygon* rp, s32 y) else fnDepthTest = DepthTest<false>; + if (polygon->ClearStencil) + memset(&StencilBuffer[256 * (y&0x1)], 0, 256); + if (polygon->YTop != polygon->YBottom) { if (y >= polygon->Vertices[rp->NextVL]->FinalPosition[1] && rp->CurVL != polygon->VBottom) @@ -904,7 +901,7 @@ void RenderPolygonScanline(RendererPolygon* rp, s32 y) // check stencil buffer for shadows if (polygon->IsShadow) { - if (StencilBuffer[pixeladdr] == 0) + if (StencilBuffer[pixeladdr & 0x1FF] == 0) continue; } @@ -930,7 +927,7 @@ void RenderPolygonScanline(RendererPolygon* rp, s32 y) } if (!fnDepthTest(DepthBuffer[pixeladdr], z)) - StencilBuffer[pixeladdr] = 1; + StencilBuffer[pixeladdr & 0x1FF] = 1; continue; } @@ -1130,10 +1127,10 @@ void RenderPolygon(RendererPolygon* rp) if (ybot > 192) ybot = 192; - if (polygon->ClearStencil) + /*if (polygon->ClearStencil) { memset(StencilBuffer, 0, 192*256); - } + }*/ for (s32 y = ytop; y < ybot; y++) { |