diff --git a/src/swrenderer/drawers/r_drawerargs.cpp b/src/swrenderer/drawers/r_drawerargs.cpp
index f98db9a43..880166d30 100644
--- a/src/swrenderer/drawers/r_drawerargs.cpp
+++ b/src/swrenderer/drawers/r_drawerargs.cpp
@@ -65,6 +65,10 @@ namespace swrenderer
 		basecolfunc = &SWPixelFormatDrawers::DrawColumn;
 		fuzzcolfunc = &SWPixelFormatDrawers::DrawFuzzColumn;
 		transcolfunc = &SWPixelFormatDrawers::DrawTranslatedColumn;
+	}
+
+	SpanDrawerArgs::SpanDrawerArgs()
+	{
 		spanfunc = &SWPixelFormatDrawers::DrawSpan;
 	}
 
@@ -617,7 +621,7 @@ namespace swrenderer
 		return nullptr;
 	}
 
-	void DrawerArgs::SetSpanStyle(bool masked, bool additive, fixed_t alpha)
+	void SpanDrawerArgs::SetSpanStyle(bool masked, bool additive, fixed_t alpha)
 	{
 		if (masked)
 		{
@@ -673,6 +677,11 @@ namespace swrenderer
 		}
 	}
 
+	void SpanDrawerArgs::DrawSpan()
+	{
+		(Drawers()->*spanfunc)(*this);
+	}
+
 	void SpanDrawerArgs::DrawTiltedSpan(int y, int x1, int x2, const FVector3 &plane_sz, const FVector3 &plane_su, const FVector3 &plane_sv, bool plane_shade, int planeshade, float planelightfloat, fixed_t pviewx, fixed_t pviewy, FDynamicColormap *basecolormap)
 	{
 		Drawers()->DrawTiltedSpan(*this, y, x1, x2, plane_sz, plane_su, plane_sv, plane_shade, planeshade, planelightfloat, pviewx, pviewy, basecolormap);
diff --git a/src/swrenderer/drawers/r_drawerargs.h b/src/swrenderer/drawers/r_drawerargs.h
index 3e8fd0ee5..8ce0f821e 100644
--- a/src/swrenderer/drawers/r_drawerargs.h
+++ b/src/swrenderer/drawers/r_drawerargs.h
@@ -46,7 +46,6 @@ namespace swrenderer
 
 		bool SetPatchStyle(FRenderStyle style, fixed_t alpha, int translation, uint32_t color, FDynamicColormap *&basecolormap, fixed_t shadedlightshade = 0);
 		bool SetPatchStyle(FRenderStyle style, float alpha, int translation, uint32_t color, FDynamicColormap *&basecolormap, fixed_t shadedlightshade = 0);
-		void SetSpanStyle(bool masked, bool additive, fixed_t alpha);
 
 		void SetColorMapLight(FSWColormap *base_colormap, float light, int shade);
 		void SetTranslationMap(lighttable_t *translation);
@@ -63,7 +62,6 @@ namespace swrenderer
 		ColumnDrawerFunc basecolfunc;
 		ColumnDrawerFunc fuzzcolfunc;
 		ColumnDrawerFunc transcolfunc;
-		SpanDrawerFunc spanfunc;
 
 		uint32_t *dc_srcblend;
 		uint32_t *dc_destblend;
@@ -144,8 +142,12 @@ namespace swrenderer
 	class SpanDrawerArgs : public DrawerArgs
 	{
 	public:
+		SpanDrawerArgs();
+
+		void SetSpanStyle(bool masked, bool additive, fixed_t alpha);
 		void SetSpanTexture(FTexture *tex);
 
+		void DrawSpan();
 		void DrawTiltedSpan(int y, int x1, int x2, const FVector3 &plane_sz, const FVector3 &plane_su, const FVector3 &plane_sv, bool plane_shade, int planeshade, float planelightfloat, fixed_t pviewx, fixed_t pviewy, FDynamicColormap *basecolormap);
 		void DrawColoredSpan(int y, int x1, int x2);
 		void DrawFogBoundaryLine(int y, int x1, int x2);
@@ -170,6 +172,9 @@ namespace swrenderer
 		FVector3 dc_viewpos_step;
 		TriLight *dc_lights = nullptr;
 		int dc_num_lights = 0;
+
+	private:
+		SpanDrawerFunc spanfunc;
 	};
 
 	class ColumnDrawerArgs : public DrawerArgs
diff --git a/src/swrenderer/plane/r_flatplane.cpp b/src/swrenderer/plane/r_flatplane.cpp
index 45ffa790e..0663d02bf 100644
--- a/src/swrenderer/plane/r_flatplane.cpp
+++ b/src/swrenderer/plane/r_flatplane.cpp
@@ -254,7 +254,7 @@ namespace swrenderer
 		drawerargs.ds_x1 = x1;
 		drawerargs.ds_x2 = x2;
 
-		(drawerargs.Drawers()->*drawerargs.spanfunc)(drawerargs);
+		drawerargs.DrawSpan();
 	}
 
 	void RenderFlatPlane::StepColumn()
diff --git a/src/v_draw.cpp b/src/v_draw.cpp
index a016272d0..f7e9520ef 100644
--- a/src/v_draw.cpp
+++ b/src/v_draw.cpp
@@ -1491,7 +1491,7 @@ void DCanvas::FillSimplePoly(FTexture *tex, FVector2 *points, int npoints,
 					drawerargs.ds_xfrac = xs_RoundToInt(tex.X * scalex);
 					drawerargs.ds_yfrac = xs_RoundToInt(tex.Y * scaley);
 
-					(drawerargs.Drawers()->*drawerargs.spanfunc)(drawerargs);
+					drawerargs.DrawSpan();
 #endif
 				}
 				x += xinc;