diff --git a/source/glbackend/gl_palmanager.cpp b/source/glbackend/gl_palmanager.cpp
index fbb286476..a6afd32d0 100644
--- a/source/glbackend/gl_palmanager.cpp
+++ b/source/glbackend/gl_palmanager.cpp
@@ -262,16 +262,17 @@ void PaletteManager::BindPalswap(int index)
 		if (uindex != lastsindex)
 		{
 			lastsindex = uindex;
-			if (palswaps[uindex].swaptexture == nullptr)
+			auto& ps = palswaps[uindex];
+			if (ps.swaptexture == nullptr)
 			{
 				auto p = GLInterface.NewTexture();
 				p->CreateTexture(256, numshades, true, false);
-				p->LoadTexture((uint8_t*)palswaps[uindex].lookup);
+				p->LoadTexture((uint8_t*)ps.lookup);
 				p->SetSampler(Sampler2DNoFilter);
-				palswaps[uindex].swaptexture = p;
+				ps.swaptexture = p;
 			}
-			inst->BindTexture(1, palswaps[uindex].swaptexture);
-			inst->SetFadeColor(palswaps[index].fadeColor);
+			inst->BindTexture(1, ps.swaptexture);
+			inst->SetFadeColor(ps.fadeColor);
 		}
 	}
 
diff --git a/wadsrc/static/demolition/shaders/glsl/polymost.fp b/wadsrc/static/demolition/shaders/glsl/polymost.fp
index 18bd37048..ae4fb1a2d 100644
--- a/wadsrc/static/demolition/shaders/glsl/polymost.fp
+++ b/wadsrc/static/demolition/shaders/glsl/polymost.fp
@@ -183,7 +183,10 @@ void main()
 		else
 		{
 			color.rgb *= detailColor.rgb;
-			// todo: For True Color, calculate a shade value from the table and apply that to the color directly.
+			shade = clamp(shade / (u_numShades-2), 0.0, 1.0);
+			// Apply the shade as a linear depth fade ramp.
+			color.rgb = mix(color.rgb, u_fogColor.rgb, shade);
+
 		}
 		if (fullbright == 0.0) color.rgb *= v_color.rgb;
 		color.a *= v_color.a;