diff --git a/src/swrenderer/drawers/r_draw.cpp b/src/swrenderer/drawers/r_draw.cpp
index 181c4602f..c609e7c43 100644
--- a/src/swrenderer/drawers/r_draw.cpp
+++ b/src/swrenderer/drawers/r_draw.cpp
@@ -601,7 +601,7 @@ namespace swrenderer
 		}
 	}
 
-	void R_SetupSpanBits(FTexture *tex)
+	void R_SetSpanTexture(FTexture *tex)
 	{
 		using namespace drawerargs;
 
@@ -616,6 +616,9 @@ namespace swrenderer
 		{
 			ds_ybits--;
 		}
+
+		ds_source = r_swtruecolor ? (const uint8_t*)tex->GetPixelsBgra() : tex->GetPixels();
+		ds_source_mipmapped = tex->Mipmapped() && tex->GetWidth() > 1 && tex->GetHeight() > 1;
 	}
 
 	void R_SetSpanColormap(FDynamicColormap *colormap, int shade)
@@ -623,14 +626,6 @@ namespace swrenderer
 		R_SetDSColorMapLight(colormap, 0, shade);
 	}
 
-	void R_SetSpanSource(FTexture *tex)
-	{
-		using namespace drawerargs;
-
-		ds_source = r_swtruecolor ? (const uint8_t*)tex->GetPixelsBgra() : tex->GetPixels();
-		ds_source_mipmapped = tex->Mipmapped() && tex->GetWidth() > 1 && tex->GetHeight() > 1;
-	}
-
 	/////////////////////////////////////////////////////////////////////////
 
 	void R_DrawWallColumn()
diff --git a/src/swrenderer/drawers/r_draw.h b/src/swrenderer/drawers/r_draw.h
index b16883022..cf8fb2c35 100644
--- a/src/swrenderer/drawers/r_draw.h
+++ b/src/swrenderer/drawers/r_draw.h
@@ -178,9 +178,8 @@ namespace swrenderer
 	void R_SetDSColorMapLight(FSWColormap *base_colormap, float light, int shade);
 	void R_SetTranslationMap(lighttable_t *translation);
 
-	void R_SetupSpanBits(FTexture *tex);
+	void R_SetSpanTexture(FTexture *tex);
 	void R_SetSpanColormap(FDynamicColormap *colormap, int shade);
-	void R_SetSpanSource(FTexture *tex);
 
 	void R_MapTiltedPlane(int y, int x1);
 	void R_MapColoredPlane(int y, int x1);
diff --git a/src/swrenderer/scene/r_plane.cpp b/src/swrenderer/scene/r_plane.cpp
index 8f9661fbd..d7ecda8fe 100644
--- a/src/swrenderer/scene/r_plane.cpp
+++ b/src/swrenderer/scene/r_plane.cpp
@@ -1179,10 +1179,9 @@ void R_DrawSinglePlane (visplane_t *pl, fixed_t alpha, bool additive, bool maske
 		{ // Don't waste time on a masked texture if it isn't really masked.
 			masked = false;
 		}
-		R_SetupSpanBits(tex);
+		R_SetSpanTexture(tex);
 		double xscale = pl->xform.xScale * tex->Scale.X;
 		double yscale = pl->xform.yScale * tex->Scale.Y;
-		R_SetSpanSource(tex);
 
 		basecolormap = pl->colormap;
 		planeshade = LIGHT2SHADE(pl->lightlevel);
diff --git a/src/v_draw.cpp b/src/v_draw.cpp
index 1af386d60..31081a210 100644
--- a/src/v_draw.cpp
+++ b/src/v_draw.cpp
@@ -1379,12 +1379,11 @@ void DCanvas::FillSimplePoly(FTexture *tex, FVector2 *points, int npoints,
 	sinrot = sin(rotation.Radians());
 
 	// Setup constant texture mapping parameters.
-	R_SetupSpanBits(tex);
+	R_SetSpanTexture(tex);
 	if (colormap)
 		R_SetSpanColormap(colormap, clamp(shade >> FRACBITS, 0, NUMCOLORMAPS - 1));
 	else
 		R_SetSpanColormap(&identitycolormap, 0);
-	R_SetSpanSource(tex);
 	if (ds_xbits != 0)
 	{
 		scalex = double(1u << (32 - ds_xbits)) / scalex;