diff --git a/src/common/fonts/font.cpp b/src/common/fonts/font.cpp
index 9663f4e1cb..6ddbe41d46 100644
--- a/src/common/fonts/font.cpp
+++ b/src/common/fonts/font.cpp
@@ -570,6 +570,32 @@ void RecordTextureColors (FImageSource *pic, uint32_t *usedcolors)
 	}
 }
 
+//==========================================================================
+//
+// RecordLuminosity
+//
+// Records minimum and maximum luminosity of a texture.
+//
+//==========================================================================
+
+static void RecordLuminosity(FImageSource* pic, int* minlum, int* maxlum)
+{
+	auto bitmap = pic->GetCachedBitmap(nullptr, FImageSource::normal);
+	auto pixels = bitmap.GetPixels();
+	auto size = pic->GetWidth() * pic->GetHeight();
+
+	for (int x = 0; x < size; x++)
+	{
+		int xx = x * 4;
+		if (pixels[xx + 3] > 0)
+		{
+			int lum = Luminance(pixels[xx + 2], pixels[xx + 1], pixels[xx]);
+			if (lum < *minlum) *minlum = lum;
+			if (lum > *maxlum) *maxlum = lum;
+		}
+	}
+}
+
 //==========================================================================
 //
 // RecordAllTextureColors
@@ -969,27 +995,22 @@ int FFont::GetMaxAscender(const uint8_t* string) const
 void FFont::LoadTranslations()
 {
 	unsigned int count = min<unsigned>(Chars.Size(), LastChar - FirstChar + 1);
-	uint32_t usedcolors[256] = {};
-	TArray<double> Luminosity;
 
 	if (count == 0) return;
+	int minlum = 255, maxlum = 0;
 	for (unsigned int i = 0; i < count; i++)
 	{
 		if (Chars[i].OriginalPic)
 		{
 			auto pic = Chars[i].OriginalPic->GetTexture()->GetImage();
-			if (pic) RecordTextureColors(pic, usedcolors);
+			RecordLuminosity(pic, &minlum, &maxlum);
 		}
 	}
 
-	int minlum = 0, maxlum = 0;
-	GetLuminosity (usedcolors, Luminosity, &minlum, &maxlum);
 	if (MinLum >= 0 && MinLum < minlum) minlum = MinLum;
 	if (MaxLum > maxlum) maxlum = MaxLum;
 
 	// Here we can set everything to a luminosity translation.
-
-	// Create different translations for different color ranges
 	Translations.Resize(NumTextColors);
 	for (int i = 0; i < NumTextColors; i++)
 	{
diff --git a/src/common/fonts/singlelumpfont.cpp b/src/common/fonts/singlelumpfont.cpp
index c4711d9022..7725cdb2df 100644
--- a/src/common/fonts/singlelumpfont.cpp
+++ b/src/common/fonts/singlelumpfont.cpp
@@ -527,7 +527,7 @@ void FSingleLumpFont::FixupPalette (uint8_t *identity, const PalEntry *palette,
 	double minlum = 100000000.0;
 
 	identity[0] = 0;
-	palette += 3;	// Skip the transparent color
+	palette++;	// Skip the transparent color
 
 	for (int i = 1; i < ActiveColors; ++i, palette ++)
 	{
diff --git a/src/rendering/hwrenderer/scene/hw_sprites.cpp b/src/rendering/hwrenderer/scene/hw_sprites.cpp
index c31ae60d05..d53e9ee1e4 100644
--- a/src/rendering/hwrenderer/scene/hw_sprites.cpp
+++ b/src/rendering/hwrenderer/scene/hw_sprites.cpp
@@ -976,6 +976,7 @@ void HWSprite::Process(HWDrawInfo *di, AActor* thing, sector_t * sector, area_t
 	}
 
 	depth = (float)((x - vp.Pos.X) * vp.TanCos + (y - vp.Pos.Y) * vp.TanSin);
+	if (isSpriteShadow) depth += 1.f/65536.f; // always sort shadows behind the sprite.
 
 	// light calculation
 
diff --git a/src/scripting/backend/codegen_doom.cpp b/src/scripting/backend/codegen_doom.cpp
index e107563543..30385519ce 100644
--- a/src/scripting/backend/codegen_doom.cpp
+++ b/src/scripting/backend/codegen_doom.cpp
@@ -521,7 +521,6 @@ ExpEmit FxActionSpecialCall::Emit(VMFunctionBuilder *build)
 	unsigned i = 0;
 
 	// Call the BuiltinCallLineSpecial function to perform the desired special.
-	static uint8_t reginfo[] = { REGT_INT, REGT_POINTER, REGT_INT, REGT_INT, REGT_INT, REGT_INT, REGT_INT };
 	auto sym = FindBuiltinFunction(NAME_BuiltinCallLineSpecial);
 
 	assert(sym);