fix 0px tall polygon aa

2023-12-22 15:07:57 -05:00 · 2023-12-22 15:07:57 -05:00 · a1b3ace386
parent 521fc249a3
commit a1b3ace386
1 changed files with 8 additions and 0 deletions
--- a/src/GPU3D_Soft.cpp
+++ b/src/GPU3D_Soft.cpp
@ -1036,6 +1036,14 @@ void SoftRenderer::RenderPolygonScanline(const GPU& gpu, RendererPolygon* rp, s3
        }
    }

+    // quick hack to fix a minor bug.
+    // for some reason 0 pixel tall polygons have broken aa.
+    if (polygon->YBottom == polygon->YTop)
+    {
+        l_edgecov = 0;
+        r_edgecov = 0;
+    }
+
    // interpolate attributes along Y

    s32 rl = interp_start->Interpolate(vlcur->FinalColor[0], vlnext->FinalColor[0]);