diff --git a/src/gl/renderer/gl_lightdata.cpp b/src/gl/renderer/gl_lightdata.cpp
index 1e1feaf00..0e994abf9 100644
--- a/src/gl/renderer/gl_lightdata.cpp
+++ b/src/gl/renderer/gl_lightdata.cpp
@@ -108,12 +108,12 @@ CUSTOM_CVAR(Int,gl_fogmode,1,CVAR_ARCHIVE|CVAR_NOINITCALL)
 void gl_GetRenderStyle(FRenderStyle style, bool drawopaque, bool allowcolorblending,
 					   int *tm, int *sb, int *db, int *be)
 {
-	static int blendstyles[] = { GL_ZERO, GL_ONE, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA };
+	static int blendstyles[] = { GL_ZERO, GL_ONE, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, GL_DST_COLOR, GL_ONE_MINUS_DST_COLOR,  };
 	static int renderops[] = { 0, GL_FUNC_ADD, GL_FUNC_SUBTRACT, GL_FUNC_REVERSE_SUBTRACT, -1, -1, -1, -1, 
 		-1, -1, -1, -1, -1, -1, -1, -1 };
 
-	int srcblend = blendstyles[style.SrcAlpha&3];
-	int dstblend = blendstyles[style.DestAlpha&3];
+	int srcblend = blendstyles[style.SrcAlpha%STYLEALPHA_MAX];
+	int dstblend = blendstyles[style.DestAlpha%STYLEALPHA_MAX];
 	int blendequation = renderops[style.BlendOp&15];
 	int texturemode = drawopaque? TM_OPAQUE : TM_MODULATE;
 
diff --git a/src/gl/renderer/gl_renderer.cpp b/src/gl/renderer/gl_renderer.cpp
index c6496102c..50ef35c0b 100644
--- a/src/gl/renderer/gl_renderer.cpp
+++ b/src/gl/renderer/gl_renderer.cpp
@@ -560,7 +560,7 @@ void gl_FillScreen()
 // Draws a blend over the entire view
 //
 //==========================================================================
-void FGLRenderer::DrawBlend(sector_t * viewsector, bool FixedColormap, bool docolormap)
+void FGLRenderer::DrawBlend(sector_t * viewsector, bool FixedColormap, bool docolormap, bool in2d)
 {
 	float blend[4] = { 0,0,0,0 };
 	PalEntry blendv = 0;
@@ -623,15 +623,22 @@ void FGLRenderer::DrawBlend(sector_t * viewsector, bool FixedColormap, bool doco
 			extra_blue = blendv.b / 255.0f;
 
 			// If this is a multiplicative blend do it separately and add the additive ones on top of it.
-			blendv = 0;
 
 			// black multiplicative blends are ignored
 			if (extra_red || extra_green || extra_blue)
 			{
-				gl_RenderState.BlendFunc(GL_DST_COLOR, GL_ZERO);
-				gl_RenderState.SetColor(extra_red, extra_green, extra_blue, 1.0f);
-				gl_FillScreen();
+				if (!in2d)
+				{
+					gl_RenderState.BlendFunc(GL_DST_COLOR, GL_ZERO);
+					gl_RenderState.SetColor(extra_red, extra_green, extra_blue, 1.0f);
+					gl_FillScreen();
+				}
+				else
+				{
+					screen->Dim(blendv, 1, 0, 0, screen->GetWidth(), screen->GetHeight(), &LegacyRenderStyles[STYLE_Multiply]);
+				}
 			}
+			blendv = 0;
 		}
 		else if (blendv.a)
 		{
@@ -655,15 +662,22 @@ void FGLRenderer::DrawBlend(sector_t * viewsector, bool FixedColormap, bool doco
 		V_AddBlend(player->BlendR, player->BlendG, player->BlendB, player->BlendA, blend);
 	}
 
-	gl_RenderState.SetTextureMode(TM_MODULATE);
-	gl_RenderState.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-	if (blend[3]>0.0f)
+	if (!in2d)
 	{
-		gl_RenderState.SetColor(blend[0], blend[1], blend[2], blend[3]);
-		gl_FillScreen();
+		gl_RenderState.SetTextureMode(TM_MODULATE);
+		gl_RenderState.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+		if (blend[3] > 0.0f)
+		{
+			gl_RenderState.SetColor(blend[0], blend[1], blend[2], blend[3]);
+			gl_FillScreen();
+		}
+		gl_RenderState.ResetColor();
+		gl_RenderState.EnableTexture(true);
+	}
+	else
+	{
+		screen->Dim(PalEntry(255, blend[0] * 255, blend[1] * 255, blend[2] * 255), blend[3], 0, 0, screen->GetWidth(), screen->GetHeight());
 	}
-	gl_RenderState.ResetColor();
-	gl_RenderState.EnableTexture(true);
 }
 
 
diff --git a/src/gl/renderer/gl_renderer.h b/src/gl/renderer/gl_renderer.h
index 59b18d2f4..2b81ae547 100644
--- a/src/gl/renderer/gl_renderer.h
+++ b/src/gl/renderer/gl_renderer.h
@@ -193,7 +193,7 @@ public:
 	void RenderTextureView(FCanvasTexture *tex, AActor *Viewpoint, double FOV);
 	void WriteSavePic(player_t *player, FileWriter *file, int width, int height);
 	void RenderView(player_t *player);
-	void DrawBlend(sector_t * viewsector, bool FixedColormap, bool docolormap);
+	void DrawBlend(sector_t * viewsector, bool FixedColormap, bool docolormap, bool in2d = false);
 
 
 	bool StartOffscreen();
diff --git a/src/gl/scene/gl_swscene.cpp b/src/gl/scene/gl_swscene.cpp
index 7d5a21a8d..972a20cbf 100644
--- a/src/gl/scene/gl_swscene.cpp
+++ b/src/gl/scene/gl_swscene.cpp
@@ -123,5 +123,5 @@ void SWSceneDrawer::RenderView(player_t *player)
 	screen->Begin2D(false);
 	screen->DrawTexture(FBTexture, 0, 0, DTA_SpecialColormap, map, TAG_DONE);
 	SWRenderer->DrawRemainingPlayerSprites();
-	GLRenderer->DrawBlend(r_viewpoint.sector, !!map, swtruecolor);
+	GLRenderer->DrawBlend(r_viewpoint.sector, !!map, swtruecolor, true);
 }
diff --git a/src/r_data/renderstyle.cpp b/src/r_data/renderstyle.cpp
index 987de82b9..9b0569ea4 100644
--- a/src/r_data/renderstyle.cpp
+++ b/src/r_data/renderstyle.cpp
@@ -58,6 +58,7 @@ FRenderStyle LegacyRenderStyles[STYLE_Count] =
 	{ { STYLEOP_RevSub, STYLEALPHA_Src, STYLEALPHA_One, 0 } },											/* STYLE_Subtract*/
 	{ { STYLEOP_Add, STYLEALPHA_Src, STYLEALPHA_One, STYLEF_ColorIsFixed } },							/* STYLE_AddStencil */
 	{ { STYLEOP_Add, STYLEALPHA_Src, STYLEALPHA_One, STYLEF_RedIsAlpha | STYLEF_ColorIsFixed } },		/* STYLE_AddShaded */
+	{ { STYLEOP_Add, STYLEALPHA_InvDstCol, STYLEALPHA_Zero, 0 } },										/* STYLE_Multiply */
 };
 
 double GetAlpha(int type, double alpha)
@@ -68,7 +69,7 @@ double GetAlpha(int type, double alpha)
 	case STYLEALPHA_One:		return 1.;
 	case STYLEALPHA_Src:		return alpha;
 	case STYLEALPHA_InvSrc:		return 1. - alpha;
-	default:					return 0;
+	default:					return 0.5;	// undeterminable
 	}
 }
 
diff --git a/src/r_data/renderstyle.h b/src/r_data/renderstyle.h
index afb82d380..d5393f487 100644
--- a/src/r_data/renderstyle.h
+++ b/src/r_data/renderstyle.h
@@ -61,6 +61,7 @@ enum ERenderStyle
 	STYLE_Subtract,			// Actually this is 'reverse subtract' but this is what normal people would expect by 'subtract'.
 	STYLE_AddStencil,		// Fill image interior with alphacolor
 	STYLE_AddShaded,		// Treat patch data as alpha values for alphacolor
+	STYLE_Multiply,			// Multiply source with destination (HW renderer only.)
 
 	STYLE_Count
 };
@@ -87,6 +88,11 @@ enum ERenderAlpha
 	STYLEALPHA_One,			// Blend factor is 1.0
 	STYLEALPHA_Src,			// Blend factor is alpha
 	STYLEALPHA_InvSrc,		// Blend factor is 1.0 - alpha
+	STYLEALPHA_SrcCol,		// Blend factor is color (HWR only)
+	STYLEALPHA_InvSrcCol,	// Blend factor is 1.0 - color (HWR only)
+	STYLEALPHA_DstCol,		// Blend factor is dest. color (HWR only)
+	STYLEALPHA_InvDstCol,	// Blend factor is 1.0 - dest. color (HWR only)
+	STYLEALPHA_MAX
 };
 
 enum ERenderFlags
diff --git a/src/v_2ddrawer.cpp b/src/v_2ddrawer.cpp
index fd0a9ce7a..e860d8034 100644
--- a/src/v_2ddrawer.cpp
+++ b/src/v_2ddrawer.cpp
@@ -435,14 +435,14 @@ void F2DDrawer::AddFlatFill(int left, int top, int right, int bottom, FTexture *
 //
 //===========================================================================
 
-void F2DDrawer::AddColorOnlyQuad(int x1, int y1, int w, int h, PalEntry color)
+void F2DDrawer::AddColorOnlyQuad(int x1, int y1, int w, int h, PalEntry color, FRenderStyle *style)
 {
 	RenderCommand dg;
 
 	dg.mType = DrawTypeTriangles;
 	dg.mVertCount = 4;
 	dg.mVertIndex = (int)mVertices.Reserve(4);
-	dg.mRenderStyle = LegacyRenderStyles[STYLE_Translucent];
+	dg.mRenderStyle = style? *style : LegacyRenderStyles[STYLE_Translucent];
 	auto ptr = &mVertices[dg.mVertIndex];
 	ptr->Set(x1, y1, 0, 0, 0, color); ptr++;
 	ptr->Set(x1, y1 + h, 0, 0, 0, color); ptr++;
diff --git a/src/v_2ddrawer.h b/src/v_2ddrawer.h
index ad045a9b2..96fb51782 100644
--- a/src/v_2ddrawer.h
+++ b/src/v_2ddrawer.h
@@ -122,7 +122,7 @@ public:
 		DAngle rotation, const FColormap &colormap, PalEntry flatcolor, int lightlevel);
 	void AddFlatFill(int left, int top, int right, int bottom, FTexture *src, bool local_origin);
 
-	void AddColorOnlyQuad(int left, int top, int width, int height, PalEntry color);
+	void AddColorOnlyQuad(int left, int top, int width, int height, PalEntry color, FRenderStyle *style);
 
 	void AddDim(PalEntry color, float damount, int x1, int y1, int w, int h);
 	void AddClear(int left, int top, int right, int bottom, int palcolor, uint32_t color);
diff --git a/src/v_draw.cpp b/src/v_draw.cpp
index 081c20ab4..477a20b05 100644
--- a/src/v_draw.cpp
+++ b/src/v_draw.cpp
@@ -1106,7 +1106,7 @@ void DFrameBuffer::Clear(int left, int top, int right, int bottom, int palcolor,
 	{
 		color = GPalette.BaseColors[palcolor] | 0xff000000;
 	}
-	m2DDrawer.AddColorOnlyQuad(left, top, right - left, bottom - top, color | 0xFF000000);
+	m2DDrawer.AddColorOnlyQuad(left, top, right - left, bottom - top, color | 0xFF000000, nullptr);
 }
 
 DEFINE_ACTION_FUNCTION(_Screen, Clear)
@@ -1131,7 +1131,7 @@ DEFINE_ACTION_FUNCTION(_Screen, Clear)
 //
 //==========================================================================
 
-void DFrameBuffer::DoDim(PalEntry color, float amount, int x1, int y1, int w, int h)
+void DFrameBuffer::DoDim(PalEntry color, float amount, int x1, int y1, int w, int h, FRenderStyle *style)
 {
 	if (amount <= 0)
 	{
@@ -1141,10 +1141,10 @@ void DFrameBuffer::DoDim(PalEntry color, float amount, int x1, int y1, int w, in
 	{
 		amount = 1;
 	}
-	m2DDrawer.AddColorOnlyQuad(x1, y1, w, h, color | (int(amount * 255) << 24));
+	m2DDrawer.AddColorOnlyQuad(x1, y1, w, h, color.d & 0xffffff | (int(amount * 255) << 24), style);
 }
 
-void DFrameBuffer::Dim(PalEntry color, float damount, int x1, int y1, int w, int h)
+void DFrameBuffer::Dim(PalEntry color, float damount, int x1, int y1, int w, int h, FRenderStyle *style)
 {
 	if (clipwidth >= 0 && clipheight >= 0)
 	{
@@ -1164,7 +1164,7 @@ void DFrameBuffer::Dim(PalEntry color, float damount, int x1, int y1, int w, int
 		if (h > clipheight) h = clipheight;
 		if (h <= 0) return;
 	}
-	DoDim(color, damount, x1, y1, w, h);
+	DoDim(color, damount, x1, y1, w, h, style);
 }
 
 DEFINE_ACTION_FUNCTION(_Screen, Dim)
diff --git a/src/v_video.h b/src/v_video.h
index 39d07eb07..7f745de20 100644
--- a/src/v_video.h
+++ b/src/v_video.h
@@ -371,8 +371,8 @@ public:
 	void Clear2D() { m2DDrawer.Clear(); }
 
 	// Dim part of the canvas
-	void Dim(PalEntry color, float amount, int x1, int y1, int w, int h);
-	void DoDim(PalEntry color, float amount, int x1, int y1, int w, int h);
+	void Dim(PalEntry color, float amount, int x1, int y1, int w, int h, FRenderStyle *style = nullptr);
+	void DoDim(PalEntry color, float amount, int x1, int y1, int w, int h, FRenderStyle *style = nullptr);
 
 	// Fill an area with a texture
 	void FlatFill(int left, int top, int right, int bottom, FTexture *src, bool local_origin = false);