diff --git a/src/gl/renderer/gl_renderstate.cpp b/src/gl/renderer/gl_renderstate.cpp
index 429f69c349..d70eb51661 100644
--- a/src/gl/renderer/gl_renderstate.cpp
+++ b/src/gl/renderer/gl_renderstate.cpp
@@ -72,6 +72,7 @@ void FRenderState::Reset()
 	mModelMatrixEnabled = false;
 	mTextureMatrixEnabled = false;
 	mObjectColor = 0xffffffff;
+	mObjectColor2 = 0;
 	mVertexBuffer = mCurrentVertexBuffer = NULL;
 	mColormapState = CM_DEFAULT;
 	mSoftLight = 0;
@@ -144,6 +145,8 @@ bool FRenderState::ApplyShader()
 
 	glVertexAttrib4fv(VATTR_COLOR, mColor.vec);
 	glVertexAttrib4fv(VATTR_NORMAL, mNormal.vec);
+	//activeShader->muObjectColor2.Set(mObjectColor2);
+	activeShader->muObjectColor2.Set(mObjectColor2);
 
 	activeShader->muDesaturation.Set(mDesaturation / 255.f);
 	activeShader->muFogEnabled.Set(fogset);
diff --git a/src/gl/renderer/gl_renderstate.h b/src/gl/renderer/gl_renderstate.h
index 76e2c791cd..2bef2ff91b 100644
--- a/src/gl/renderer/gl_renderstate.h
+++ b/src/gl/renderer/gl_renderstate.h
@@ -106,6 +106,7 @@ class FRenderState
 	FStateVec4 mClipLine;
 	PalEntry mFogColor;
 	PalEntry mObjectColor;
+	PalEntry mObjectColor2;
 	FStateVec4 mDynColor;
 	float mClipSplit[2];
 
@@ -381,6 +382,11 @@ public:
 		mObjectColor = pe;
 	}
 
+	void SetObjectColor2(PalEntry pe)
+	{
+		mObjectColor2 = pe;
+	}
+
 	void SetFog(PalEntry c, float d)
 	{
 		const float LOG2E = 1.442692f;	// = 1/log(2)
diff --git a/src/gl/shaders/gl_shader.cpp b/src/gl/shaders/gl_shader.cpp
index ef512faea9..421139050c 100644
--- a/src/gl/shaders/gl_shader.cpp
+++ b/src/gl/shaders/gl_shader.cpp
@@ -225,6 +225,7 @@ bool FShader::Load(const char * name, const char * vert_prog_lump, const char *
 	muFogColor.Init(hShader, "uFogColor");
 	muDynLightColor.Init(hShader, "uDynLightColor");
 	muObjectColor.Init(hShader, "uObjectColor");
+	muObjectColor2.Init(hShader, "uObjectColor2");
 	muGlowBottomColor.Init(hShader, "uGlowBottomColor");
 	muGlowTopColor.Init(hShader, "uGlowTopColor");
 	muGlowBottomPlane.Init(hShader, "uGlowBottomPlane");
diff --git a/src/gl/shaders/gl_shader.h b/src/gl/shaders/gl_shader.h
index f9eb5c2920..e8012aa5d3 100644
--- a/src/gl/shaders/gl_shader.h
+++ b/src/gl/shaders/gl_shader.h
@@ -271,6 +271,7 @@ class FShader
 	FBufferedUniformPE muFogColor;
 	FBufferedUniform4f muDynLightColor;
 	FBufferedUniformPE muObjectColor;
+	FBufferedUniformPE muObjectColor2;
 	FUniform4f muGlowBottomColor;
 	FUniform4f muGlowTopColor;
 	FUniform4f muGlowBottomPlane;
diff --git a/wadsrc/static/shaders/glsl/main.fp b/wadsrc/static/shaders/glsl/main.fp
index 145f76964c..a6bc6bbd7f 100644
--- a/wadsrc/static/shaders/glsl/main.fp
+++ b/wadsrc/static/shaders/glsl/main.fp
@@ -1,5 +1,5 @@
 in vec4 pixelpos;
-in vec2 glowdist;
+in vec3 glowdist;
 
 in vec4 vWorldNormal;
 in vec4 vEyeNormal;
@@ -89,7 +89,8 @@ vec4 getTexel(vec2 st)
 			}
 			break;
 	}
-	texel *= uObjectColor;
+	if (uObjectColor2.a == 0) texel *= uObjectColor;
+	else texel *= mix(uObjectColor, uObjectColor2, glowdist.z);
 
 	return desaturate(texel);
 }
diff --git a/wadsrc/static/shaders/glsl/main.vp b/wadsrc/static/shaders/glsl/main.vp
index 1de8854c0d..f4937ab66a 100644
--- a/wadsrc/static/shaders/glsl/main.vp
+++ b/wadsrc/static/shaders/glsl/main.vp
@@ -6,7 +6,7 @@ in vec4 aColor;
 in vec4 aVertex2;
 in vec4 aNormal;
 out vec4 pixelpos;
-out vec2 glowdist;
+out vec3 glowdist;
 
 out vec4 vWorldNormal;
 out vec4 vEyeNormal;
@@ -50,9 +50,15 @@ void main()
 		pixelpos.xyz = worldcoord.xyz;
 		pixelpos.w = -eyeCoordPos.z/eyeCoordPos.w;
 
-		glowdist.x = -((uGlowTopPlane.w + uGlowTopPlane.x * worldcoord.x + uGlowTopPlane.y * worldcoord.z) * uGlowTopPlane.z) - worldcoord.y;
-		glowdist.y = worldcoord.y + ((uGlowBottomPlane.w + uGlowBottomPlane.x * worldcoord.x + uGlowBottomPlane.y * worldcoord.z) * uGlowBottomPlane.z);
+		float topatpoint = -((uGlowTopPlane.w + uGlowTopPlane.x * worldcoord.x + uGlowTopPlane.y * worldcoord.z) * uGlowTopPlane.z);
+		float bottomatpoint = -((uGlowBottomPlane.w + uGlowBottomPlane.x * worldcoord.x + uGlowBottomPlane.y * worldcoord.z) * uGlowBottomPlane.z);
+		glowdist.x = topatpoint - worldcoord.y;
+		glowdist.y = worldcoord.y - bottomatpoint;
+		glowdist.z = glowdist.x / (topatpoint - bottomatpoint);
+		
 
+		return (uGlowTopPlane.w + normal.X*v->fX() + normal.Y*v->fY()) * negiC;
+		
 		if (uSplitBottomPlane.z != 0.0)
 		{
 			gl_ClipDistance[3] = -((uSplitTopPlane.w + uSplitTopPlane.x * worldcoord.x + uSplitTopPlane.y * worldcoord.z) * uSplitTopPlane.z) - worldcoord.y;
diff --git a/wadsrc/static/shaders/glsl/shaderdefs.i b/wadsrc/static/shaders/glsl/shaderdefs.i
index 2099427d53..c109c8524a 100644
--- a/wadsrc/static/shaders/glsl/shaderdefs.i
+++ b/wadsrc/static/shaders/glsl/shaderdefs.i
@@ -15,6 +15,7 @@ uniform float uAlphaThreshold;
 
 // colors
 uniform vec4 uObjectColor;
+uniform vec4 uObjectColor2;
 uniform vec4 uDynLightColor;
 uniform vec4 uFogColor;
 uniform float uDesaturationFactor;