diff --git a/src/gl/renderer/gl_lightdata.cpp b/src/gl/renderer/gl_lightdata.cpp
index 102d1d43e5..7d69ababd9 100644
--- a/src/gl/renderer/gl_lightdata.cpp
+++ b/src/gl/renderer/gl_lightdata.cpp
@@ -170,6 +170,7 @@ void gl_GetRenderStyle(FRenderStyle style, bool drawopaque, bool allowcolorblend
 	}
 	else if (style.Flags & STYLEF_InvertSource)
 	{
+		// The only place where InvertSource is used is for inverted sprites with the infrared powerup.
 		texturemode = TM_INVERSE;
 	}
 
diff --git a/src/gl/renderer/gl_renderer.cpp b/src/gl/renderer/gl_renderer.cpp
index 5120c00ea9..d7d2466f04 100644
--- a/src/gl/renderer/gl_renderer.cpp
+++ b/src/gl/renderer/gl_renderer.cpp
@@ -246,7 +246,7 @@ unsigned char *FGLRenderer::GetTextureBuffer(FTexture *tex, int &w, int &h)
 	FMaterial * gltex = FMaterial::ValidateTexture(tex);
 	if (gltex)
 	{
-		return gltex->CreateTexBuffer(CM_DEFAULT, 0, w, h);
+		return gltex->CreateTexBuffer(0, w, h);
 	}
 	return NULL;
 }
diff --git a/src/gl/renderer/gl_renderstate.h b/src/gl/renderer/gl_renderstate.h
index e037fb637e..cd37705af9 100644
--- a/src/gl/renderer/gl_renderstate.h
+++ b/src/gl/renderer/gl_renderstate.h
@@ -2,6 +2,7 @@
 #define __GL_RENDERSTATE_H
 
 #include <string.h>
+#include "gl/system/gl_interface.h"
 #include "c_cvars.h"
 #include "r_defs.h"
 
@@ -177,6 +178,7 @@ public:
 	void SetTextureMode(int mode)
 	{
 		mTextureMode = mode;
+		gl.checkTextureMode(mode);
 	}
 
 	void EnableTexture(bool on)
diff --git a/src/gl/scene/gl_decal.cpp b/src/gl/scene/gl_decal.cpp
index 9596410766..7c2dda05f4 100644
--- a/src/gl/scene/gl_decal.cpp
+++ b/src/gl/scene/gl_decal.cpp
@@ -74,7 +74,7 @@ void GLWall::DrawDecal(DBaseDecal *decal)
 	int light;
 	int rel;
 	float a;
-	bool flipx, flipy, loadAlpha;
+	bool flipx, flipy;
 	DecalVertex dv[4];
 	FTextureID decalTile;
 	
@@ -179,9 +179,6 @@ void GLWall::DrawDecal(DBaseDecal *decal)
 		rel = rellight + getExtraLight();
 	}
 	
-	int r = RPART(decal->AlphaColor);
-	int g = GPART(decal->AlphaColor);
-	int b = BPART(decal->AlphaColor);
 	FColormap p = Colormap;
 	
 	if (glset.nocoloredspritelighting)
@@ -190,58 +187,6 @@ void GLWall::DrawDecal(DBaseDecal *decal)
 		p.LightColor = PalEntry(p.colormap, v, v, v);
 	}
 	
-	float red, green, blue;
-	
-	if (decal->RenderStyle.Flags & STYLEF_RedIsAlpha)
-	{
-		loadAlpha = true;
-		p.colormap=CM_SHADE;
-
-		if (glset.lightmode != 8)
-		{
-			gl_GetLightColor(light, rel, &p, &red, &green, &blue);
-		}
-		else
-		{
-			gl_GetLightColor(lightlevel, rellight, &p, &red, &green, &blue);
-		}
-		
-		if (gl_lights && GLRenderer->mLightCount && !gl_fixedcolormap && gl_light_sprites)
-		{
-			float result[3];
-			fixed_t x, y;
-			decal->GetXY(seg->sidedef, x, y);
-			gl_GetSpriteLight(NULL, x, y, zpos, sub, Colormap.colormap-CM_DESAT0, result, line, side == line->sidedef[0]? 0:1);
-			if (glset.lightmode != 8)
-			{
-				red = clamp<float>(result[0]+red, 0, 1.0f);
-				green = clamp<float>(result[1]+green, 0, 1.0f);
-				blue = clamp<float>(result[2]+blue, 0, 1.0f);
-			}
-			else
-			{
-				gl_RenderState.SetDynLight(result[0], result[1], result[2]);
-			}
-		}
-
-		BYTE R = xs_RoundToInt(r * red);
-		BYTE G = xs_RoundToInt(g * green);
-		BYTE B = xs_RoundToInt(b * blue);
-
-		gl_ModifyColor(R,G,B, Colormap.colormap);
-
-		red = R/255.f;
-		green = G/255.f;
-		blue = B/255.f;
-	}	
-	else
-	{
-		loadAlpha = false;
-		
-		red = 1.f;
-		green = 1.f;
-		blue = 1.f;
-	}
 	
 	
 	a = FIXED2FLOAT(decal->Alpha);
@@ -299,8 +244,6 @@ void GLWall::DrawDecal(DBaseDecal *decal)
 		
 	zpos+= FRACUNIT*(flipy? decalheight-decaltopo : decaltopo);
 
-	tex->BindPatch(p.colormap, decal->Translation);
-
 	dv[1].z=dv[2].z = FIXED2FLOAT(zpos);
 	dv[0].z=dv[3].z = dv[1].z - decalheight;
 	dv[1].v=dv[2].v = tex->GetVT();
@@ -359,32 +302,25 @@ void GLWall::DrawDecal(DBaseDecal *decal)
 		float vb = tex->GetVB();
 		for(i=0;i<4;i++) dv[i].v=vb-dv[i].v;
 	}
-	// fog is set once per wall in the calling function and not per decal!
 
-	if (loadAlpha)
+	// calculate dynamic light effect.
+	if (gl_lights && GLRenderer->mLightCount && !gl_fixedcolormap && gl_light_sprites)
 	{
-		glColor4f(red, green, blue, a);
-
-		if (glset.lightmode == 8)
-		{
-			if (gl_fixedcolormap)
-				glVertexAttrib1f(VATTR_LIGHTLEVEL, 1.0);
-			else
-				glVertexAttrib1f(VATTR_LIGHTLEVEL, gl_CalcLightLevel(light, rel, false) / 255.0);
-		}
-	}
-	else
-	{
-		if (glset.lightmode == 8)
-		{
-			gl_SetColor(light, rel, &p, a, !!extralight); // Korshun.
-		}
-		else
-		{
-			gl_SetColor(light, rel, &p, a);
-		}
+		// Note: This should be replaced with proper shader based lighting.
+		fixed_t x, y;
+		decal->GetXY(seg->sidedef, x, y);
+		gl_SetDynSpriteLight(NULL, x, y, zpos, sub);
 	}
 
+	// alpha color only has an effect when using an alpha texture.
+	if (decal->RenderStyle.Flags & STYLEF_RedIsAlpha)
+	{
+		gl_RenderState.SetObjectColor(decal->AlphaColor);
+	}
+
+	gl_SetColor(light, rel, &p, a);
+
+	// for additively drawn decals we must temporarily set the fog color to black.
 	PalEntry fc = gl_RenderState.GetFogColor();
 	if (decal->RenderStyle.BlendOp == STYLEOP_Add && decal->RenderStyle.DestAlpha == STYLEALPHA_One)
 	{
@@ -393,6 +329,8 @@ void GLWall::DrawDecal(DBaseDecal *decal)
 
 
 	gl_SetRenderStyle(decal->RenderStyle, false, false);
+	tex->BindPatch(p.colormap, decal->Translation);
+
 
 	// If srcalpha is one it looks better with a higher alpha threshold
 	if (decal->RenderStyle.SrcAlpha == STYLEALPHA_One) gl_RenderState.AlphaFunc(GL_GEQUAL, gl_mask_threshold);
@@ -407,6 +345,8 @@ void GLWall::DrawDecal(DBaseDecal *decal)
 	}
 	glEnd();
 	rendered_decals++;
+	gl_RenderState.SetTextureMode(TM_MODULATE);
+	gl_RenderState.SetObjectColor(0xffffffff);
 	gl_RenderState.SetFog(fc,-1);
 	gl_RenderState.SetDynLight(0,0,0);
 }
diff --git a/src/gl/scene/gl_skydome.cpp b/src/gl/scene/gl_skydome.cpp
index 7dbf5e5733..b5f3b13330 100644
--- a/src/gl/scene/gl_skydome.cpp
+++ b/src/gl/scene/gl_skydome.cpp
@@ -290,7 +290,6 @@ static void RenderDome(FTextureID texno, FMaterial * tex, float x_offset, float
 	if (tex && !secondlayer) 
 	{
 		PalEntry pe = tex->tex->GetSkyCapColor(false);
-		if (CM_Index!=CM_DEFAULT) ModifyPalette(&pe, &pe, CM_Index, 1);
 
 		R=pe.r/255.0f;
 		G=pe.g/255.0f;
@@ -312,7 +311,6 @@ static void RenderDome(FTextureID texno, FMaterial * tex, float x_offset, float
 	if (tex && !secondlayer) 
 	{
 		PalEntry pe = tex->tex->GetSkyCapColor(true);
-		if (CM_Index!=CM_DEFAULT) ModifyPalette(&pe, &pe, CM_Index, 1);
 		R=pe.r/255.0f;
 		G=pe.g/255.0f;
 		B=pe.b/255.0f;
diff --git a/src/gl/system/gl_interface.cpp b/src/gl/system/gl_interface.cpp
index 7615373c52..2299ddabb7 100644
--- a/src/gl/system/gl_interface.cpp
+++ b/src/gl/system/gl_interface.cpp
@@ -194,7 +194,6 @@ void gl_PrintStartupLog()
 
 void gl_SetTextureMode(int type)
 {
-	gl.needAlphaTexture = false;
 	if (type == TM_MASK)
 	{
 		glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
@@ -239,7 +238,6 @@ void gl_SetTextureMode(int type)
 	else // if (type == TM_MODULATE)
 	{
 		glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
-		gl.needAlphaTexture = (type == TM_REDTOALPHA);
 	}
 }
 
diff --git a/src/gl/system/gl_interface.h b/src/gl/system/gl_interface.h
index 13913f621f..8618c246af 100644
--- a/src/gl/system/gl_interface.h
+++ b/src/gl/system/gl_interface.h
@@ -44,6 +44,11 @@ struct RenderContext
 	{
 		return glslversion >= 1.3f;
 	}
+
+	void checkTextureMode(int mode)
+	{
+		if (!hasGLSL()) needAlphaTexture = (mode == TM_REDTOALPHA);
+	}
 };
 
 extern RenderContext gl;
diff --git a/src/gl/system/gl_wipe.cpp b/src/gl/system/gl_wipe.cpp
index c41a1fb243..b7751b7ece 100644
--- a/src/gl/system/gl_wipe.cpp
+++ b/src/gl/system/gl_wipe.cpp
@@ -145,9 +145,9 @@ bool OpenGLFrameBuffer::WipeStartScreen(int type)
 	}
 
 	wipestartscreen = new FHardwareTexture(Width, Height, false, false, false, true);
-	wipestartscreen->CreateTexture(NULL, Width, Height, false, 0, CM_DEFAULT);
+	wipestartscreen->CreateTexture(NULL, Width, Height, false, 0);
 	glFinish();
-	wipestartscreen->Bind(0, CM_DEFAULT);
+	wipestartscreen->Bind(0);
 	glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, Width, Height);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
@@ -168,9 +168,9 @@ bool OpenGLFrameBuffer::WipeStartScreen(int type)
 void OpenGLFrameBuffer::WipeEndScreen()
 {
 	wipeendscreen = new FHardwareTexture(Width, Height, false, false, false, true);
-	wipeendscreen->CreateTexture(NULL, Width, Height, false, 0, CM_DEFAULT);
+	wipeendscreen->CreateTexture(NULL, Width, Height, false, 0);
 	glFlush();
-	wipeendscreen->Bind(0, CM_DEFAULT);
+	wipeendscreen->Bind(0);
 	glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, Width, Height);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
@@ -280,7 +280,7 @@ bool OpenGLFrameBuffer::Wiper_Crossfade::Run(int ticks, OpenGLFrameBuffer *fb)
 	gl_RenderState.SetTextureMode(TM_OPAQUE);
 	gl_RenderState.EnableAlphaTest(false);
 	gl_RenderState.Apply();
-	fb->wipestartscreen->Bind(0, CM_DEFAULT);
+	fb->wipestartscreen->Bind(0);
 	glColor4f(1.f, 1.f, 1.f, 1.f);
 	glBegin(GL_TRIANGLE_STRIP);
 	glTexCoord2f(0, vb);
@@ -293,7 +293,7 @@ bool OpenGLFrameBuffer::Wiper_Crossfade::Run(int ticks, OpenGLFrameBuffer *fb)
 	glVertex2i(fb->Width, fb->Height);
 	glEnd();
 
-	fb->wipeendscreen->Bind(0, CM_DEFAULT);
+	fb->wipeendscreen->Bind(0);
 	glColor4f(1.f, 1.f, 1.f, clamp(Clock/32.f, 0.f, 1.f));
 	glBegin(GL_TRIANGLE_STRIP);
 	glTexCoord2f(0, vb);
@@ -347,7 +347,7 @@ bool OpenGLFrameBuffer::Wiper_Melt::Run(int ticks, OpenGLFrameBuffer *fb)
 	// Draw the new screen on the bottom.
 	gl_RenderState.SetTextureMode(TM_OPAQUE);
 	gl_RenderState.Apply();
-	fb->wipeendscreen->Bind(0, CM_DEFAULT);
+	fb->wipeendscreen->Bind(0);
 	glColor4f(1.f, 1.f, 1.f, 1.f);
 	glBegin(GL_TRIANGLE_STRIP);
 	glTexCoord2f(0, vb);
@@ -363,7 +363,7 @@ bool OpenGLFrameBuffer::Wiper_Melt::Run(int ticks, OpenGLFrameBuffer *fb)
 	int i, dy;
 	bool done = false;
 
-	fb->wipestartscreen->Bind(0, CM_DEFAULT);
+	fb->wipestartscreen->Bind(0);
 	// Copy the old screen in vertical strips on top of the new one.
 	while (ticks--)
 	{
@@ -492,7 +492,7 @@ bool OpenGLFrameBuffer::Wiper_Burn::Run(int ticks, OpenGLFrameBuffer *fb)
 	gl_RenderState.SetTextureMode(TM_OPAQUE);
 	gl_RenderState.EnableAlphaTest(false);
 	gl_RenderState.Apply();
-	fb->wipestartscreen->Bind(0, CM_DEFAULT);
+	fb->wipestartscreen->Bind(0);
 	glColor4f(1.f, 1.f, 1.f, 1.f);
 	glBegin(GL_TRIANGLE_STRIP);
 	glTexCoord2f(0, vb);
@@ -523,10 +523,10 @@ bool OpenGLFrameBuffer::Wiper_Burn::Run(int ticks, OpenGLFrameBuffer *fb)
 
 	// Burn the new screen on top of it.
 	glColor4f(1.f, 1.f, 1.f, 1.f);
-	fb->wipeendscreen->Bind(1, CM_DEFAULT);
+	fb->wipeendscreen->Bind(1);
 	//BurnTexture->Bind(0, CM_DEFAULT);
 
-	BurnTexture->CreateTexture(rgb_buffer, WIDTH, HEIGHT, false, 0, CM_DEFAULT);
+	BurnTexture->CreateTexture(rgb_buffer, WIDTH, HEIGHT, false, 0);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
diff --git a/src/gl/textures/gl_bitmap.cpp b/src/gl/textures/gl_bitmap.cpp
index d90fd36b75..51e03aa981 100644
--- a/src/gl/textures/gl_bitmap.cpp
+++ b/src/gl/textures/gl_bitmap.cpp
@@ -50,12 +50,11 @@
 //
 //===========================================================================
 template<class T>
-void iCopyColors(unsigned char * pout, const unsigned char * pin, int cm, int count, int step)
+void iCopyColors(unsigned char * pout, const unsigned char * pin, bool alphatex, int count, int step)
 {
 	int i;
-	int fac;
 
-	if (cm == CM_DEFAULT)
+	if (!alphatex)
 	{
 		for(i=0;i<count;i++)
 		{
@@ -70,7 +69,7 @@ void iCopyColors(unsigned char * pout, const unsigned char * pin, int cm, int co
 			pin+=step;
 		}
 	}
-	else if (cm == CM_SHADE)
+	else
 	{
 		// Alpha shade uses the red channel for true color pics
 		for(i=0;i<count;i++)
@@ -84,40 +83,9 @@ void iCopyColors(unsigned char * pout, const unsigned char * pin, int cm, int co
 			pin+=step;
 		}
 	}
-	else if (cm >= CM_FIRSTSPECIALCOLORMAP && cm < CM_FIRSTSPECIALCOLORMAP + int(SpecialColormaps.Size()))
-	{
-		for(i=0;i<count;i++) 
-		{
-			if (T::A(pin) != 0)
-			{
-				PalEntry pe = SpecialColormaps[cm - CM_FIRSTSPECIALCOLORMAP].GrayscaleToColor[T::Gray(pin)];
-				pout[0] = pe.r;
-				pout[1] = pe.g;
-				pout[2] = pe.b;
-				pout[3] = T::A(pin);
-			}
-			pout+=4;
-			pin+=step;
-		}
-	}
-	else if (cm<=CM_DESAT31)
-	{
-		// Desaturated light settings.
-		fac=cm-CM_DESAT0;
-		for(i=0;i<count;i++)
-		{
-			if (T::A(pin) != 0)
-			{
-				gl_Desaturate(T::Gray(pin), T::R(pin), T::G(pin), T::B(pin), pout[0], pout[1], pout[2], fac);
-				pout[3] = T::A(pin);
-			}
-			pout+=4;
-			pin+=step;
-		}
-	}
 }
 
-typedef void (*CopyFunc)(unsigned char * pout, const unsigned char * pin, int cm, int count, int step);
+typedef void (*CopyFunc)(unsigned char * pout, const unsigned char * pin, bool alphatex, int count, int step);
 
 static CopyFunc copyfuncs[]={
 	iCopyColors<cRGB>,
@@ -147,57 +115,11 @@ void FGLBitmap::CopyPixelDataRGB(int originx, int originy,
 		BYTE *buffer = GetPixels() + 4*originx + Pitch*originy;
 		for (int y=0;y<srcheight;y++)
 		{
-			copyfuncs[ct](&buffer[y*Pitch], &patch[y*step_y], cm, srcwidth, step_x);
+			copyfuncs[ct](&buffer[y*Pitch], &patch[y*step_y], alphatex, srcwidth, step_x);
 		}
 	}
 }
 
-//===========================================================================
-// 
-// Creates one of the special palette translations for the given palette
-//
-//===========================================================================
-void ModifyPalette(PalEntry * pout, PalEntry * pin, int cm, int count)
-{
-	int i;
-	int fac;
-
-	if (cm == CM_DEFAULT)
-	{
-		if (pin != pout)
-			memcpy(pout, pin, count * sizeof(PalEntry));
-	}
-	else if (cm >= CM_FIRSTSPECIALCOLORMAP && cm < CM_FIRSTSPECIALCOLORMAP + int(SpecialColormaps.Size()))
-	{
-		for(i=0;i<count;i++)
-		{
-			int gray = (pin[i].r*77 + pin[i].g*143 + pin[i].b*37) >> 8;
-			// This can be done in place so we cannot copy the color directly.
-			PalEntry pe = SpecialColormaps[cm - CM_FIRSTSPECIALCOLORMAP].GrayscaleToColor[gray];
-			pout[i].r = pe.r;
-			pout[i].g = pe.g;
-			pout[i].b = pe.b;
-			pout[i].a = pin[i].a;
-		}
-	}
-	else if (cm<=CM_DESAT31)
-	{
-		// Desaturated light settings.
-		fac=cm-CM_DESAT0;
-		for(i=0;i<count;i++)
-		{
-			int gray=(pin[i].r*77 + pin[i].g*143 + pin[i].b*36)>>8;
-			gl_Desaturate(gray, pin[i].r, pin[i].g, pin[i].b, pout[i].r, pout[i].g, pout[i].b, fac);
-			pout[i].a = pin[i].a;
-		}
-	}
-	else if (pin!=pout)
-	{
-		memcpy(pout, pin, count * sizeof(PalEntry));
-	}
-}
-
-
 //===========================================================================
 //
 // Paletted to True Color texture copy function
@@ -215,7 +137,7 @@ void FGLBitmap::CopyPixelData(int originx, int originy, const BYTE * patch, int
 		BYTE *buffer = GetPixels() + 4*originx + Pitch*originy;
 
 		// CM_SHADE is an alpha map with 0==transparent and 1==opaque
-		if (cm == CM_SHADE) 
+		if (alphatex) 
 		{
 			for(int i=0;i<256;i++) 
 			{
@@ -225,37 +147,21 @@ void FGLBitmap::CopyPixelData(int originx, int originy, const BYTE * patch, int
 					penew[i]=PalEntry(0,255,255,255);	// If the palette contains transparent colors keep them.
 			}
 		}
-		else
+		else if (translation > 0)
 		{
-			// apply any translation. 
-			// The ice and blood color translations are done directly
-			// because that yields better results.
-			switch(translation)
+			PalEntry *ptrans = GLTranslationPalette::GetPalette(translation);
+			if (ptrans)
 			{
-			default:
-			{
-				PalEntry *ptrans = GLTranslationPalette::GetPalette(translation);
-				if (ptrans)
+				for (i = 0; i < 256; i++)
 				{
-					for(i = 0; i < 256; i++)
-					{
-						penew[i] = (ptrans[i]&0xffffff) | (palette[i]&0xff000000);
-					}
-					break;
+					penew[i] = (ptrans[i] & 0xffffff) | (palette[i] & 0xff000000);
 				}
 			}
-
-			case 0:
-				memcpy(penew, palette, 256*sizeof(PalEntry));
-				break;
-			}
-			if (cm!=0)
-			{
-				// Apply color modifications like invulnerability, desaturation and Boom colormaps
-				ModifyPalette(penew, penew, cm, 256);
-			}
 		}
-		// Now penew contains the actual palette that is to be used for creating the image.
+		else
+		{
+			memcpy(penew, palette, 256*sizeof(PalEntry));
+		}
 
 		// convert the image according to the translated palette.
 		for (y=0;y<srcheight;y++)
@@ -271,15 +177,6 @@ void FGLBitmap::CopyPixelData(int originx, int originy, const BYTE * patch, int
 					buffer[pos+2] = penew[v].b;
 					buffer[pos+3] = penew[v].a;
 				}
-				/*
-				else if (penew[v].a!=255)
-				{
-					buffer[pos  ] = (buffer[pos  ] * penew[v].a + penew[v].r * (1-penew[v].a)) / 255;
-					buffer[pos+1] = (buffer[pos+1] * penew[v].a + penew[v].g * (1-penew[v].a)) / 255;
-					buffer[pos+2] = (buffer[pos+2] * penew[v].a + penew[v].b * (1-penew[v].a)) / 255;
-					buffer[pos+3] = clamp<int>(buffer[pos+3] + (( 255-buffer[pos+3]) * (255-penew[v].a))/255, 0, 255);
-				}
-				*/
 			}
 		}
 	}
diff --git a/src/gl/textures/gl_bitmap.h b/src/gl/textures/gl_bitmap.h
index db3722a6ea..98addb51dc 100644
--- a/src/gl/textures/gl_bitmap.h
+++ b/src/gl/textures/gl_bitmap.h
@@ -5,24 +5,34 @@
 #include "gl/textures/gl_material.h"
 
 
-void ModifyPalette(PalEntry * pout, PalEntry * pin, int cm, int count);
-
 class FGLBitmap : public FBitmap
 {
-	int cm;
+	bool alphatex;
 	int translation;
 public:
 
-	FGLBitmap() { cm = CM_DEFAULT; translation = 0; }
+	FGLBitmap()
+	{
+		alphatex = false;
+		translation = 0;
+	}
 	FGLBitmap(BYTE *buffer, int pitch, int width, int height)
 		: FBitmap(buffer, pitch, width, height)
-	{ cm = CM_DEFAULT; translation = 0; }
-
-	void SetTranslationInfo(int _cm, int _trans=-1337)
 	{
-		if (_cm != -1) cm = _cm;
-		if (_trans != -1337) translation = _trans;
+		alphatex = false;
+		translation = 0;
+	}
 
+	void SetTranslationInfo(int _trans)
+	{
+		if (_trans == -1) alphatex = true;
+		else if (_trans != -1337) translation = _trans;
+
+	}
+
+	void SetAlphaTex()
+	{
+		alphatex = true;
 	}
 
 	virtual void CopyPixelDataRGB(int originx, int originy, const BYTE *patch, int srcwidth, 
diff --git a/src/gl/textures/gl_hwtexture.cpp b/src/gl/textures/gl_hwtexture.cpp
index 648bac770d..7aa8b610c6 100644
--- a/src/gl/textures/gl_hwtexture.cpp
+++ b/src/gl/textures/gl_hwtexture.cpp
@@ -277,9 +277,7 @@ FHardwareTexture::FHardwareTexture(int _width, int _height, bool _mipmap, bool w
 	texwidth=_width;
 	texheight=_height;
 
-	int cm_arraysize = CM_FIRSTSPECIALCOLORMAP + SpecialColormaps.Size();
-	glTexID = new unsigned[cm_arraysize];
-	memset(glTexID,0,sizeof(unsigned int)*cm_arraysize);
+	glDefTexID = 0;
 	clampmode=0;
 	glDepthID = 0;
 	forcenofiltering = nofilter;
@@ -317,21 +315,8 @@ void FHardwareTexture::Clean(bool all)
 
 	if (all)
 	{
-		for (int i=0;i<cm_arraysize;i++)
-		{
-			DeleteTexture(glTexID[i]);
-		}
-		//glDeleteTextures(cm_arraysize,glTexID);
-		memset(glTexID,0,sizeof(unsigned int)*cm_arraysize);
-	}
-	else
-	{
-		for (int i=1;i<cm_arraysize;i++)
-		{
-			DeleteTexture(glTexID[i]);
-		}
-		//glDeleteTextures(cm_arraysize-1,glTexID+1);
-		memset(glTexID+1,0,sizeof(unsigned int)*(cm_arraysize-1));
+		DeleteTexture(glDefTexID);
+		glDefTexID = 0;
 	}
 	for(unsigned int i=0;i<glTexID_Translated.Size();i++)
 	{
@@ -349,7 +334,6 @@ void FHardwareTexture::Clean(bool all)
 FHardwareTexture::~FHardwareTexture() 
 { 
 	Clean(true); 
-	delete [] glTexID;
 }
 
 
@@ -359,28 +343,24 @@ FHardwareTexture::~FHardwareTexture()
 //
 //===========================================================================
 
-unsigned * FHardwareTexture::GetTexID(int cm, int translation)
+unsigned * FHardwareTexture::GetTexID(int translation)
 {
-	if (cm < 0 || cm >= CM_MAXCOLORMAP) cm=CM_DEFAULT;
-
 	if (translation==0)
 	{
-		return &glTexID[cm];
+		return &glDefTexID;
 	}
 
 	// normally there aren't more than very few different 
 	// translations here so this isn't performance critical.
 	for(unsigned int i=0;i<glTexID_Translated.Size();i++)
 	{
-		if (glTexID_Translated[i].cm == cm &&
-			glTexID_Translated[i].translation == translation)
+		if (glTexID_Translated[i].translation == translation)
 		{
 			return &glTexID_Translated[i].glTexID;
 		}
 	}
 
 	int add = glTexID_Translated.Reserve(1);
-	glTexID_Translated[add].cm=cm;
 	glTexID_Translated[add].translation=translation;
 	glTexID_Translated[add].glTexID=0;
 	return &glTexID_Translated[add].glTexID;
@@ -391,9 +371,10 @@ unsigned * FHardwareTexture::GetTexID(int cm, int translation)
 //	Binds this patch
 //
 //===========================================================================
-unsigned int FHardwareTexture::Bind(int texunit, int cm,int translation)
+unsigned int FHardwareTexture::Bind(int texunit, int translation, bool alphatexture)
 {
-	unsigned int * pTexID=GetTexID(cm, translation);
+	if (alphatexture) translation = TRANS_Alpha;
+	unsigned int * pTexID=GetTexID(translation);
 
 	if (*pTexID!=0)
 	{
@@ -461,7 +442,7 @@ void FHardwareTexture::BindToFrameBuffer()
 {
 	if (gl.flags & RFL_FRAMEBUFFER)
 	{
-		glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, glTexID[0], 0);
+		glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, glDefTexID, 0);
 		glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, GetDepthBuffer()); 
 	}
 }
@@ -472,15 +453,13 @@ void FHardwareTexture::BindToFrameBuffer()
 //	(re-)creates the texture
 //
 //===========================================================================
-unsigned int FHardwareTexture::CreateTexture(unsigned char * buffer, int w, int h, bool wrap, int texunit,
-									  int cm, int translation)
+unsigned int FHardwareTexture::CreateTexture(unsigned char * buffer, int w, int h, bool wrap, int texunit, int translation, bool alphatexture)
 {
-	if (cm < 0 || cm >= CM_MAXCOLORMAP) cm=CM_DEFAULT;
-
-	unsigned int * pTexID=GetTexID(cm, translation);
+	if (alphatexture) translation = TRANS_Alpha;
+	unsigned int * pTexID=GetTexID(translation);
 
 	if (texunit != 0) glActiveTexture(GL_TEXTURE0+texunit);
-	LoadImage(buffer, w, h, *pTexID, wrap? GL_REPEAT:GL_CLAMP, cm==CM_SHADE, texunit);
+	LoadImage(buffer, w, h, *pTexID, wrap? GL_REPEAT:GL_CLAMP, alphatexture, texunit);
 	if (texunit != 0) glActiveTexture(GL_TEXTURE0);
 	return *pTexID;
 }
diff --git a/src/gl/textures/gl_hwtexture.h b/src/gl/textures/gl_hwtexture.h
index 5b5e55ac5d..fc962f3ea7 100644
--- a/src/gl/textures/gl_hwtexture.h
+++ b/src/gl/textures/gl_hwtexture.h
@@ -10,6 +10,17 @@
 class FCanvasTexture;
 class AActor;
 
+// For error catching while changing parameters.
+enum EInvalid
+{
+	Invalid = 0
+};
+
+enum ETranslation
+{
+	TRANS_Alpha = INT_MAX
+};
+
 enum
 {
 	GLT_CLAMPX=1,
@@ -27,7 +38,7 @@ class FHardwareTexture
 	{
 		unsigned int glTexID;
 		int translation;
-		int cm;
+		//int cm;
 	};
 
 public:
@@ -48,12 +59,12 @@ private:
 	bool forcenofiltering;
 	bool forcenocompression;
 
-	unsigned int * glTexID;
+	unsigned glDefTexID;
 	TArray<TranslatedTexture> glTexID_Translated;
 	unsigned int glDepthID;	// only used by camera textures
 
 	void LoadImage(unsigned char * buffer,int w, int h, unsigned int & glTexID,int wrapparam, bool alphatexture, int texunit);
-	unsigned * GetTexID(int cm, int translation);
+	unsigned * GetTexID(int translation);
 
 	int GetDepthBuffer();
 	void DeleteTexture(unsigned int texid);
@@ -68,8 +79,8 @@ public:
 
 	void BindToFrameBuffer();
 
-	unsigned int Bind(int texunit, int cm, int translation=0);
-	unsigned int CreateTexture(unsigned char * buffer, int w, int h,bool wrap, int texunit, int cm, int translation=0);
+	unsigned int Bind(int texunit, int translation=0, bool alphatexture = false);
+	unsigned int CreateTexture(unsigned char * buffer, int w, int h,bool wrap, int texunit, int translation=0, bool alphatexture = false);
 	void Resize(int _width, int _height) ;
 
 	void Clean(bool all);
diff --git a/src/gl/textures/gl_material.cpp b/src/gl/textures/gl_material.cpp
index 5d471fc811..8253c32623 100644
--- a/src/gl/textures/gl_material.cpp
+++ b/src/gl/textures/gl_material.cpp
@@ -109,7 +109,7 @@ FGLTexture::~FGLTexture()
 // Checks for the presence of a hires texture replacement and loads it
 //
 //==========================================================================
-unsigned char *FGLTexture::LoadHiresTexture(FTexture *tex, int *width, int *height, int cm)
+unsigned char *FGLTexture::LoadHiresTexture(FTexture *tex, int *width, int *height, bool alphatexture)
 {
 	if (HiresLump==-1) 
 	{
@@ -131,7 +131,7 @@ unsigned char *FGLTexture::LoadHiresTexture(FTexture *tex, int *width, int *heig
 		memset(buffer, 0, w * (h+1) * 4);
 
 		FGLBitmap bmp(buffer, w*4, w, h);
-		bmp.SetTranslationInfo(cm);
+		if (alphatexture) bmp.SetAlphaTex();
 
 		
 		int trans = hirestexture->CopyTrueColorPixels(&bmp, 0, 0);
@@ -271,7 +271,7 @@ BYTE *FGLTexture::WarpBuffer(BYTE *buffer, int Width, int Height, int warp)
 //
 //===========================================================================
 
-unsigned char * FGLTexture::CreateTexBuffer(int cm, int translation, int & w, int & h, bool expand, FTexture *hirescheck, int warp)
+unsigned char * FGLTexture::CreateTexBuffer(int translation, int & w, int & h, bool expand, FTexture *hirescheck, int warp, bool alphatexture)
 {
 	unsigned char * buffer;
 	int W, H;
@@ -281,7 +281,7 @@ unsigned char * FGLTexture::CreateTexBuffer(int cm, int translation, int & w, in
 	// by hires textures
 	if (gl_texture_usehires && hirescheck != NULL)
 	{
-		buffer = LoadHiresTexture (hirescheck, &w, &h, cm);
+		buffer = LoadHiresTexture (hirescheck, &w, &h, alphatexture);
 		if (buffer)
 		{
 			return buffer;
@@ -296,7 +296,8 @@ unsigned char * FGLTexture::CreateTexBuffer(int cm, int translation, int & w, in
 	memset(buffer, 0, W * (H+1) * 4);
 
 	FGLBitmap bmp(buffer, W*4, W, H);
-	bmp.SetTranslationInfo(cm, translation);
+	bmp.SetTranslationInfo(translation);
+	if (alphatexture) bmp.SetAlphaTex();
 
 	if (tex->bComplex)
 	{
@@ -337,7 +338,7 @@ unsigned char * FGLTexture::CreateTexBuffer(int cm, int translation, int & w, in
 	else //if (bIsTransparent != 1)
 	{
 		// [BB] Potentially upsample the buffer.
-		buffer = gl_CreateUpsampledTextureBuffer ( tex, buffer, W, H, w, h, bIsTransparent || cm == CM_SHADE );
+		buffer = gl_CreateUpsampledTextureBuffer ( tex, buffer, W, H, w, h, bIsTransparent || alphatexture);
 	}
 	currentwarp = warp;
 	currentwarptime = gl_frameMS;
@@ -386,7 +387,7 @@ bool FGLTexture::CreatePatch()
 //
 //===========================================================================
 
-const FHardwareTexture *FGLTexture::Bind(int texunit, int cm, int clampmode, int translation, FTexture *hirescheck, int warp)
+const FHardwareTexture *FGLTexture::Bind(int texunit, int clampmode, int translation, FTexture *hirescheck, int warp)
 {
 	int usebright = false;
 
@@ -400,7 +401,7 @@ const FHardwareTexture *FGLTexture::Bind(int texunit, int cm, int clampmode, int
 		hwtex = gltexture[clampmode] = gltexture[4];
 		gltexture[4] = NULL;
 
-		if (hwtex->Bind(texunit, cm, translation))
+		if (hwtex->Bind(texunit, translation))
 		{
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, (clampmode & GLT_CLAMPX)? GL_CLAMP_TO_EDGE : GL_REPEAT);
 			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, (clampmode & GLT_CLAMPY)? GL_CLAMP_TO_EDGE : GL_REPEAT);
@@ -428,7 +429,7 @@ const FHardwareTexture *FGLTexture::Bind(int texunit, int cm, int clampmode, int
 		}
 
 		// Bind it to the system.
-		if (!hwtex->Bind(texunit, cm, translation))
+		if (!hwtex->Bind(texunit, translation))
 		{
 			
 			int w=0, h=0;
@@ -438,10 +439,10 @@ const FHardwareTexture *FGLTexture::Bind(int texunit, int cm, int clampmode, int
 			
 			if (!tex->bHasCanvas)
 			{
-				buffer = CreateTexBuffer(cm, translation, w, h, false, hirescheck, warp);
+				buffer = CreateTexBuffer(translation, w, h, false, hirescheck, warp);
 				tex->ProcessData(buffer, w, h, false);
 			}
-			if (!hwtex->CreateTexture(buffer, w, h, true, texunit, cm, translation)) 
+			if (!hwtex->CreateTexture(buffer, w, h, true, texunit, translation)) 
 			{
 				// could not create texture
 				delete[] buffer;
@@ -463,7 +464,7 @@ const FHardwareTexture *FGLTexture::Bind(int texunit, int cm, int clampmode, int
 //	Binds a sprite to the renderer
 //
 //===========================================================================
-const FHardwareTexture * FGLTexture::BindPatch(int texunit, int cm, int translation, int warp)
+const FHardwareTexture * FGLTexture::BindPatch(int texunit, int translation, int warp, bool alphatexture)
 {
 	bool usebright = false;
 	int transparm = translation;
@@ -489,14 +490,14 @@ const FHardwareTexture * FGLTexture::BindPatch(int texunit, int cm, int translat
 
 
 		// Bind it to the system. 
-		if (!glpatch->Bind(texunit, cm, translation))
+		if (!glpatch->Bind(texunit, translation, alphatexture))
 		{
 			int w, h;
 
 			// Create this texture
-			unsigned char * buffer = CreateTexBuffer(cm, translation, w, h, bExpand, NULL, warp);
+			unsigned char * buffer = CreateTexBuffer(translation, w, h, bExpand, NULL, warp, alphatexture);
 			tex->ProcessData(buffer, w, h, true);
-			if (!glpatch->CreateTexture(buffer, w, h, false, texunit, cm, translation)) 
+			if (!glpatch->CreateTexture(buffer, w, h, false, texunit, translation, alphatexture)) 
 			{
 				// could not create texture
 				delete[] buffer;
@@ -755,7 +756,7 @@ bool FMaterial::TrimBorders(int *rect)
 	int w;
 	int h;
 
-	unsigned char *buffer = CreateTexBuffer(CM_DEFAULT, 0, w, h);
+	unsigned char *buffer = CreateTexBuffer(0, w, h);
 
 	if (buffer == NULL) 
 	{
@@ -847,7 +848,7 @@ void FMaterial::Bind(int cm, int clampmode, int translation, int overrideshader)
 	else if (clampmode != -1) clampmode &= 3;
 	else clampmode = 4;
 
-	const FHardwareTexture *gltexture = mBaseLayer->Bind(0, cm, clampmode, translation, allowhires? tex:NULL, softwarewarp);
+	const FHardwareTexture *gltexture = mBaseLayer->Bind(0, clampmode, translation, allowhires? tex:NULL, softwarewarp);
 	if (gltexture != NULL && shaderindex > 0 && overrideshader == 0)
 	{
 		for(unsigned i=0;i<mTextureLayers.Size();i++)
@@ -863,7 +864,7 @@ void FMaterial::Bind(int cm, int clampmode, int translation, int overrideshader)
 			{
 				layer = mTextureLayers[i].texture;
 			}
-			layer->gl_info.SystemTexture->Bind(i+1, CM_DEFAULT, clampmode, 0, NULL, false);
+			layer->gl_info.SystemTexture->Bind(i+1, clampmode, 0, NULL, false);
 			maxbound = i+1;
 		}
 	}
@@ -890,11 +891,11 @@ void FMaterial::BindPatch(int cm, int translation, int overrideshader)
 
 	int softwarewarp = gl_RenderState.SetupShader(tex->bHasCanvas, shaderindex, cm, tex->gl_info.shaderspeed);
 
-	const FHardwareTexture *glpatch = mBaseLayer->BindPatch(0, cm, translation, softwarewarp);
+	const FHardwareTexture *glpatch = mBaseLayer->BindPatch(0, translation, softwarewarp, gl.needAlphaTexture);
 	// The only multitexture effect usable on sprites is the brightmap.
 	if (glpatch != NULL && shaderindex == 3)
 	{
-		mTextureLayers[0].texture->gl_info.SystemTexture->BindPatch(1, CM_DEFAULT, 0, 0);
+		mTextureLayers[0].texture->gl_info.SystemTexture->BindPatch(1, 0, 0, false);
 		maxbound = 1;
 	}
 	// unbind everything from the last texture that's still active
@@ -1012,7 +1013,7 @@ void FMaterial::BindToFrameBuffer()
 	if (mBaseLayer->gltexture == NULL)
 	{
 		// must create the hardware texture first
-		mBaseLayer->Bind(0, CM_DEFAULT, 0, 0, NULL, 0);
+		mBaseLayer->Bind(0, 0, 0, NULL, 0);
 		FHardwareTexture::Unbind(0);
 	}
 	mBaseLayer->gltexture[0]->BindToFrameBuffer();
diff --git a/src/gl/textures/gl_material.h b/src/gl/textures/gl_material.h
index 3754e93375..16f1ed4517 100644
--- a/src/gl/textures/gl_material.h
+++ b/src/gl/textures/gl_material.h
@@ -48,7 +48,7 @@ enum ETexUse
 };
 
 
-class FGLTexture //: protected WorldTextureInfo, protected PatchTextureInfo
+class FGLTexture
 {
 	friend class FMaterial;
 public:
@@ -68,21 +68,21 @@ private:
 	bool bExpand;
 	float AlphaThreshold;
 
-	unsigned char * LoadHiresTexture(FTexture *hirescheck, int *width, int *height, int cm);
+	unsigned char * LoadHiresTexture(FTexture *hirescheck, int *width, int *height, bool alphatexture);
 	BYTE *WarpBuffer(BYTE *buffer, int Width, int Height, int warp);
 
 	FHardwareTexture *CreateTexture(int clampmode);
 	//bool CreateTexture();
 	bool CreatePatch();
 
-	const FHardwareTexture *Bind(int texunit, int cm, int clamp, int translation, FTexture *hirescheck, int warp);
-	const FHardwareTexture *BindPatch(int texunit, int cm, int translation, int warp);
+	const FHardwareTexture *Bind(int texunit, int clamp, int translation, FTexture *hirescheck, int warp);
+	const FHardwareTexture *BindPatch(int texunit, int translation, int warp, bool alphatexture);
 
 public:
 	FGLTexture(FTexture * tx, bool expandpatches);
 	~FGLTexture();
 
-	unsigned char * CreateTexBuffer(int cm, int translation, int & w, int & h, bool expand, FTexture *hirescheck, int warp);
+	unsigned char * CreateTexBuffer(int translation, int & w, int & h, bool expand, FTexture *hirescheck, int warp, bool alphatexture = false);
 
 	void Clean(bool all);
 	int Dump(int i);
@@ -138,9 +138,9 @@ public:
 	void Bind(int cm, int clamp = 0, int translation = 0, int overrideshader = 0);
 	void BindPatch(int cm, int translation = 0, int overrideshader = 0);
 
-	unsigned char * CreateTexBuffer(int cm, int translation, int & w, int & h, bool expand = false, bool allowhires=true) const
+	unsigned char * CreateTexBuffer(int translation, int & w, int & h, bool expand = false, bool allowhires=true) const
 	{
-		return mBaseLayer->CreateTexBuffer(cm, translation, w, h, expand, allowhires? tex:NULL, 0);
+		return mBaseLayer->CreateTexBuffer(translation, w, h, expand, allowhires? tex:NULL, 0);
 	}
 
 	void Clean(bool f)
@@ -233,7 +233,7 @@ public:
 			if (!mBaseLayer->tex->bHasCanvas)
 			{
 				int w, h;
-				unsigned char *buffer = CreateTexBuffer(CM_DEFAULT, 0, w, h);
+				unsigned char *buffer = CreateTexBuffer(0, w, h);
 				delete [] buffer;
 			}
 			else