- fixed texture layer management so that each material layer can decide for itself if it wants to allow upscaling.

- rewrote the hardware texture precacher to use the new texture management to properly track the data to delete.

src/common/textures/gametexture.h

@@ -145,7 +145,7 @@ public:
 	bool isFullbrightDisabled() const { return !!(flags & GTexf_DisableFullbrightSprites); }
 	bool isFullbright() const { return !!(flags & GTexf_RenderFullbright); }
 	bool isFullNameTexture() const { return !!(flags & GTexf_FullNameTexture); }
-	bool expandSprites() const { return !!expandSprite; }
+	bool expandSprites() { return expandSprite == -1? ShouldExpandSprite() : !!expandSprite; }
 	bool useWorldPanning() const { return !!(flags & GTexf_WorldPanning);  }
 	void SetWorldPanning(bool on) { if (on) flags |= GTexf_WorldPanning; else flags &= ~GTexf_WorldPanning; }
 	bool allowNoDecals() const { return !!(flags & GTexf_NoDecals);	}
@@ -269,6 +269,19 @@ public:
 
 	void CleanHardwareData(bool full = true);
 
+	void GetLayers(TArray<FTexture*>& layers)
+	{
+		layers.Clear();
+		for (auto tex : { Base.get(), Brightmap.get(), Detailmap.get(), Glowmap.get(), Normal.get(), Specular.get(), Metallic.get(), Roughness.get(), AmbientOcclusion.get() })
+		{
+			if (tex != nullptr) layers.Push(tex);
+		}
+		for (auto& tex : CustomShaderTextures)
+		{
+			if (tex != nullptr) layers.Push(tex.get());
+		}
+	}
+
 };
 
 inline FGameTexture* MakeGameTexture(FTexture* tex, const char *name, ETextureType useType)

src/common/textures/hw_material.cpp

@@ -41,7 +41,8 @@ FMaterial::FMaterial(FGameTexture * tx, int scaleflags)
 {
 	mShaderIndex = SHADER_Default;
 	sourcetex = tx;
-	imgtex = tx->GetTexture();
+	auto imgtex = tx->GetTexture();
+	mTextureLayers.Push({ imgtex, scaleflags });
 
 	if (tx->GetUseType() == ETextureType::SWCanvas && static_cast<FWrapperTexture*>(imgtex)->GetColorFormat() == 0)
 	{
@@ -66,7 +67,7 @@ FMaterial::FMaterial(FGameTexture * tx, int scaleflags)
 		{
 			for (auto &texture : { tx->Normal.get(), tx->Specular.get() })
 			{
-				mTextureLayers.Push(texture);
+				mTextureLayers.Push({ texture, 0 });
 			}
 			mShaderIndex = SHADER_Specular;
 		}
@@ -74,7 +75,7 @@ FMaterial::FMaterial(FGameTexture * tx, int scaleflags)
 		{
 			for (auto &texture : { tx->Normal.get(), tx->Metallic.get(), tx->Roughness.get(), tx->AmbientOcclusion.get() })
 			{
-				mTextureLayers.Push(texture);
+				mTextureLayers.Push({ texture, 0 });
 			}
 			mShaderIndex = SHADER_PBR;
 		}
@@ -84,30 +85,30 @@ FMaterial::FMaterial(FGameTexture * tx, int scaleflags)
 		auto placeholder = TexMan.GameByIndex(1);
 		if (tx->Brightmap.get())
 		{
-			mTextureLayers.Push(tx->Brightmap.get());
+			mTextureLayers.Push({ tx->Brightmap.get(), scaleflags });
 			mLayerFlags |= TEXF_Brightmap;
 		}
 		else	
 		{ 
-			mTextureLayers.Push(placeholder->GetTexture());
+			mTextureLayers.Push({ placeholder->GetTexture(), 0 });
 		}
 		if (tx->Detailmap.get())
 		{
-			mTextureLayers.Push(tx->Detailmap.get());
+			mTextureLayers.Push({ tx->Detailmap.get(), 0 });
 			mLayerFlags |= TEXF_Detailmap;
 		}
 		else
 		{
-			mTextureLayers.Push(placeholder->GetTexture());
+			mTextureLayers.Push({ placeholder->GetTexture(), 0 });
 		}
 		if (tx->Glowmap.get())
 		{
-			mTextureLayers.Push(tx->Glowmap.get());
+			mTextureLayers.Push({ tx->Glowmap.get(), scaleflags });
 			mLayerFlags |= TEXF_Glowmap;
 		}
 		else
 		{
-			mTextureLayers.Push(placeholder->GetTexture());
+			mTextureLayers.Push({ placeholder->GetTexture(), 0 });
 		}
 
 		auto index = tx->GetShaderIndex();
@@ -119,7 +120,7 @@ FMaterial::FMaterial(FGameTexture * tx, int scaleflags)
 				for (auto &texture : tx->CustomShaderTextures)
 				{
 					if (texture == nullptr) continue;
-					mTextureLayers.Push(texture.get());
+					mTextureLayers.Push({ texture.get(), 0 });	// scalability should be user-definable.
 				}
 				mShaderIndex = index;
 			}
@@ -149,12 +150,12 @@ FMaterial::~FMaterial()
 //
 //===========================================================================
 
-IHardwareTexture *FMaterial::GetLayer(int i, int translation, FTexture **pLayer) const
+IHardwareTexture *FMaterial::GetLayer(int i, int translation, MaterialLayerInfo **pLayer) const
 {
-	FTexture *layer = i == 0 ? imgtex : mTextureLayers[i - 1];
+	auto &layer = mTextureLayers[i];
-	if (pLayer) *pLayer = layer;
+	if (pLayer) *pLayer = &layer;
 	
-	if (layer) return layer->GetHardwareTexture(translation, mScaleFlags);
+	if (layer.layerTexture) return layer.layerTexture->GetHardwareTexture(translation, layer.scaleFlags);
 	return nullptr;
 }
 
@@ -169,7 +170,7 @@ FMaterial * FMaterial::ValidateTexture(FGameTexture * gtex, int scaleflags, bool
 {
 	if (gtex && gtex->isValid())
 	{
-		if (!gtex->ShouldExpandSprite()) scaleflags &= ~CTF_Expand;
+		if (!gtex->expandSprites()) scaleflags &= ~CTF_Expand;
 
 		FMaterial *hwtex = gtex->Material[scaleflags];
 		if (hwtex == NULL && create)

src/common/textures/hw_material.h

@@ -8,6 +8,12 @@
 struct FRemapTable;
 class IHardwareTexture;
 
+struct MaterialLayerInfo
+{
+	FTexture* layerTexture;
+	int scaleFlags;
+};
+
 //===========================================================================
 // 
 // this is the material class for OpenGL. 
@@ -17,14 +23,13 @@ class IHardwareTexture;
 class FMaterial
 {
 	private:
-	TArray<FTexture*> mTextureLayers;
+	TArray<MaterialLayerInfo> mTextureLayers; // the only layers allowed to scale are the brightmap and the glowmap.
 	int mShaderIndex;
 	int mLayerFlags = 0;
 	int mScaleFlags;
 
 public:
 	FGameTexture *sourcetex;	// the owning texture. 
-	FTexture* imgtex;			// the first layer's texture image - should be moved into the array
 
 	FMaterial(FGameTexture *tex, int scaleflags);
 	virtual ~FMaterial();
@@ -37,27 +42,22 @@ public:
 	{
 		return sourcetex;
 	}
-	FTexture* BaseLayer() const
+
+	void AddTextureLayer(FTexture *tex, bool allowscale)
 	{
-		// Only for spftpoly!
+		mTextureLayers.Push({ tex, allowscale });
-		return imgtex;
-	}
-	void AddTextureLayer(FTexture *tex)
-	{
-		//ValidateTexture(tex, false);
-		mTextureLayers.Push(tex);
 	}
 
-	int GetLayers() const
+	int NumLayers() const
 	{
-		return mTextureLayers.Size() + 1;
+		return mTextureLayers.Size();
 	}
 
-	IHardwareTexture *GetLayer(int i, int translation, FTexture **pLayer = nullptr) const;
+	IHardwareTexture *GetLayer(int i, int translation, MaterialLayerInfo **pLayer = nullptr) const;
 
 
 	static FMaterial *ValidateTexture(FGameTexture * tex, int scaleflags, bool create = true);
-	const TArray<FTexture*> &GetLayerArray() const
+	const TArray<MaterialLayerInfo> &GetLayerArray() const
 	{
 		return mTextureLayers;
 	}

src/common/textures/hw_texcontainer.h

@@ -29,6 +29,7 @@ private:
 	{
 		IHardwareTexture *hwTexture = nullptr;
 		int translation = 0;
+		bool precacheMarker;	// This is used to check whether a texture has been hit by the precacher, so that the cleanup code can delete the unneeded ones.
 
 		void Delete()
 		{
@@ -40,6 +41,16 @@ private:
 		{
 			Delete();
 		}
+
+		void MarkForPrecache(bool on)
+		{
+			precacheMarker = on;
+		}
+
+		bool isMarkedForPreache() const
+		{
+			return precacheMarker;
+		}
 	};
 
 private:
@@ -99,25 +110,44 @@ public:
 	//===========================================================================
 	// 
 	// Deletes all allocated resources and considers translations
-	// This will only be called for sprites
 	//
 	//===========================================================================
 
-	void CleanUnused(SpriteHits &usedtranslations, int scaleflags)
+	void CleanUnused()
 	{
-		if (usedtranslations.CheckKey(0) == nullptr)
+		for (auto& tt : hwDefTex)
 		{
-			hwDefTex[scaleflags].Delete();
+			if (!tt.isMarkedForPreache()) tt.Delete();
 		}
 		for (int i = hwTex_Translated.Size()-1; i>= 0; i--)
 		{
-			if (usedtranslations.CheckKey(hwTex_Translated[i].translation & 0xffffff) == nullptr)
+			auto& tt = hwTex_Translated[i];
+			if (!tt.isMarkedForPreache()) 
 			{
 				hwTex_Translated.Delete(i);
 			}
 		}
 	}
-	
+
+	void UnmarkAll()
+	{
+		for (auto& tt : hwDefTex)
+		{
+			if (!tt.isMarkedForPreache()) tt.MarkForPrecache(false);
+		}
+		for (auto& tt : hwTex_Translated)
+		{
+			if (!tt.isMarkedForPreache()) tt.MarkForPrecache(false);
+		}
+	}
+
+	void MarkForPrecache(int translation, int scaleflags)
+	{
+		auto tt = GetTexID(translation, scaleflags);
+		tt->MarkForPrecache(true);
+	}
+
+
 	template<class T>
 	void Iterate(T callback)
 	{

src/common/textures/texture.cpp

@@ -397,12 +397,6 @@ bool FTexture::DetermineTranslucency()
 	return !!bTranslucent;
 }
 
-
-void FTexture::CleanHardwareTextures()
-{
-	SystemTextures.Clean();
-}
-
 //===========================================================================
 // 
 // the default just returns an empty texture.

src/common/textures/textures.h

@@ -226,7 +226,26 @@ public:
 	IHardwareTexture* GetHardwareTexture(int translation, int scaleflags);
 	virtual FImageSource *GetImage() const { return nullptr; }
 	void CreateUpsampledTextureBuffer(FTextureBuffer &texbuffer, bool hasAlpha, bool checkonly);
-	void CleanHardwareTextures();
+
+	void CleanHardwareTextures()
+	{
+		SystemTextures.Clean();
+	}
+
+	void CleanPrecacheMarker()
+	{
+		SystemTextures.UnmarkAll();
+	}
+
+	void MarkForPrecache(int translation, int scaleflags)
+	{
+		SystemTextures.MarkForPrecache(translation, scaleflags);
+	}
+
+	void CleanUnused()
+	{
+		SystemTextures.CleanUnused();
+	}
 
 	int GetWidth() { return Width; }
 	int GetHeight() { return Height; }

src/rendering/2d/f_wipe.cpp

@@ -337,7 +337,7 @@ void Wiper_Burn::SetTextures(FGameTexture *startscreen, FGameTexture *endscreen)
 	endScreen = endscreen;
 	BurnTexture = new FBurnTexture(WIDTH, HEIGHT);
 	auto mat = FMaterial::ValidateTexture(endScreen, false);
-	mat->AddTextureLayer(BurnTexture);
+	mat->AddTextureLayer(BurnTexture, false);
 }
 
 //==========================================================================

src/rendering/gl/renderer/gl_renderstate.cpp

@@ -323,18 +323,17 @@ void FGLRenderState::ApplyMaterial(FMaterial *mat, int clampmode, int translatio
 	int usebright = false;
 	int maxbound = 0;
 
-	int flags = mat->GetScaleFlags();
+	int numLayers = mat->NumLayers();
-	int numLayers = mat->GetLayers();
+	MaterialLayerInfo* layer;
 	auto base = static_cast<FHardwareTexture*>(mat->GetLayer(0, translation));
 
-	if (base->BindOrCreate(tex->GetTexture(), 0, clampmode, translation, flags))
+	if (base->BindOrCreate(tex->GetTexture(), 0, clampmode, translation, layer->scaleFlags))
 	{
 		for (int i = 1; i<numLayers; i++)
 		{
-			FTexture *layer;
 			auto systex = static_cast<FHardwareTexture*>(mat->GetLayer(i, 0, &layer));
 			// fixme: Upscale flags must be disabled for certain layers.
-			systex->BindOrCreate(layer, i, clampmode, 0, flags);
+			systex->BindOrCreate(layer->layerTexture, i, clampmode, 0, layer->scaleFlags);
 			maxbound = i;
 		}
 	}

src/rendering/gl/system/gl_framebuffer.cpp

@@ -311,16 +311,16 @@ void OpenGLFrameBuffer::PrecacheMaterial(FMaterial *mat, int translation)
 	if (mat->Source()->GetUseType() == ETextureType::SWCanvas) return;
 
 	int flags = mat->GetScaleFlags();
-	int numLayers = mat->GetLayers();
+	int numLayers = mat->NumLayers();
-	FTexture* layer;
+	MaterialLayerInfo* layer;
 	auto base = static_cast<FHardwareTexture*>(mat->GetLayer(0, translation, &layer));
 
-	if (base->BindOrCreate(layer, 0, CLAMP_NONE, translation, flags))
+	if (base->BindOrCreate(layer->layerTexture, 0, CLAMP_NONE, translation, layer->scaleFlags))
 	{
 		for (int i = 1; i < numLayers; i++)
 		{
 			auto systex = static_cast<FHardwareTexture*>(mat->GetLayer(i, 0, &layer));
-			systex->BindOrCreate(layer, i, CLAMP_NONE, 0, flags);
+			systex->BindOrCreate(layer->layerTexture, i, CLAMP_NONE, 0, layer->scaleFlags);
 		}
 	}
 	// unbind everything. 

src/rendering/hwrenderer/scene/hw_renderstate.h

@@ -572,7 +572,6 @@ public:
 	void SetMaterial(FGameTexture* tex, EUpscaleFlags upscalemask, int scaleflags, int clampmode, int translation, int overrideshader)
 	{
 		if (shouldUpscale(tex, upscalemask)) scaleflags |= CTF_Upscale;
-		if (!tex->expandSprites()) scaleflags &= ~CTF_Expand;
 		SetMaterial(FMaterial::ValidateTexture(tex, scaleflags), clampmode, translation, overrideshader);
 	}
 

src/rendering/hwrenderer/textures/hw_precache.cpp

@@ -50,7 +50,10 @@ static void PrecacheTexture(FGameTexture *tex, int cache)
 {
 	if (cache & (FTextureManager::HIT_Wall | FTextureManager::HIT_Flat | FTextureManager::HIT_Sky))
 	{
-		FMaterial * gltex = FMaterial::ValidateTexture(tex, false);
+		int scaleflags = 0;
+		if (shouldUpscale(tex, UF_Texture)) scaleflags |= CTF_Upscale;
+
+		FMaterial * gltex = FMaterial::ValidateTexture(tex, scaleflags);
 		if (gltex) screen->PrecacheMaterial(gltex, 0);
 	}
 }
@@ -62,7 +65,6 @@ static void PrecacheTexture(FGameTexture *tex, int cache)
 //===========================================================================
 static void PrecacheList(FMaterial *gltex, SpriteHits& translations)
 {
-	//gltex->BaseLayer()->SystemTextures.CleanUnused(translations, gltex->GetScaleFlags()); this needs to be redone.
 	SpriteHits::Iterator it(translations);
 	SpriteHits::Pair* pair;
 	while (it.NextPair(pair)) screen->PrecacheMaterial(gltex, pair->Key);
@@ -76,7 +78,10 @@ static void PrecacheList(FMaterial *gltex, SpriteHits& translations)
 
 static void PrecacheSprite(FGameTexture *tex, SpriteHits &hits)
 {
-	FMaterial * gltex = FMaterial::ValidateTexture(tex, true);
+	int scaleflags = CTF_Expand;
+	if (shouldUpscale(tex, UF_Sprite)) scaleflags |= CTF_Upscale;
+
+	FMaterial * gltex = FMaterial::ValidateTexture(tex, scaleflags);
 	if (gltex) PrecacheList(gltex, hits);
 }
 
@@ -88,26 +93,36 @@ static void PrecacheSprite(FGameTexture *tex, SpriteHits &hits)
 
 void hw_PrecacheTexture(uint8_t *texhitlist, TMap<PClassActor*, bool> &actorhitlist)
 {
-	SpriteHits *spritelist = new SpriteHits[sprites.Size()];
+	TMap<FTexture*, bool> allTextures;
-	SpriteHits **spritehitlist = new SpriteHits*[TexMan.NumTextures()];
+	TArray<FTexture*> layers;
-	TMap<PClassActor*, bool>::Iterator it(actorhitlist);
-	TMap<PClassActor*, bool>::Pair *pair;
-	uint8_t *modellist = new uint8_t[Models.Size()];
-	memset(modellist, 0, Models.Size());
-	memset(spritehitlist, 0, sizeof(SpriteHits**) * TexMan.NumTextures());
 
-	// this isn't done by the main code so it needs to be done here first:
+	// First collect the potential max. texture set 
-	// check skybox textures and mark the separate faces as used
+	for (unsigned i = 1; i < TexMan.NumTextures(); i++)
-	for (int i = 0; i<TexMan.NumTextures(); i++)
 	{
-		// HIT_Wall must be checked for MBF-style sky transfers. 
+		auto gametex = TexMan.GameByIndex(i);
+		if (gametex &&
+			gametex->GetTexture()->GetImage() &&	// only image textures are subject to precaching
+			gametex->GetUseType() != ETextureType::FontChar &&	// We do not want to delete font characters here as they are very likely to be needed constantly.
+			gametex->GetUseType() < ETextureType::Special)		// Any texture marked as 'special' is also out.
+		{
+			gametex->GetLayers(layers);
+			for (auto layer : layers)
+			{
+				allTextures.Insert(layer, true);
+				layer->CleanPrecacheMarker();
+			}
+		}
+
+		// Mark the faces of a skybox as used.
+		// This isn't done by the main code so it needs to be done here.
+		// MBF sky transfers are being checked by the calling code to add HIT_Sky for them.
 		if (texhitlist[i] & (FTextureManager::HIT_Sky))
 		{
 			auto tex = TexMan.GameByIndex(i);
 			auto sb = dynamic_cast<FSkyBox*>(tex->GetTexture());
 			if (sb)
 			{
-				for (int i = 0; i<6; i++)
+				for (int i = 0; i < 6; i++)
 				{
 					if (sb->faces[i])
 					{
@@ -119,6 +134,14 @@ void hw_PrecacheTexture(uint8_t *texhitlist, TMap<PClassActor*, bool> &actorhitl
 		}
 	}
 
+	SpriteHits *spritelist = new SpriteHits[sprites.Size()];
+	SpriteHits **spritehitlist = new SpriteHits*[TexMan.NumTextures()];
+	TMap<PClassActor*, bool>::Iterator it(actorhitlist);
+	TMap<PClassActor*, bool>::Pair *pair;
+	uint8_t *modellist = new uint8_t[Models.Size()];
+	memset(modellist, 0, Models.Size());
+	memset(spritehitlist, 0, sizeof(SpriteHits**) * TexMan.NumTextures());
+
 	// Check all used actors.
 	// 1. mark all sprites associated with its states
 	// 2. mark all model data and skins associated with its states
@@ -190,7 +213,7 @@ void hw_PrecacheTexture(uint8_t *texhitlist, TMap<PClassActor*, bool> &actorhitl
 	screen->StartPrecaching();
 	int cnt = TexMan.NumTextures();
 
-	// prepare the textures for precaching. First collect all used layer textures so that we know which ones should not be deleted.
+	// prepare the textures for precaching. First mark all used layer textures so that we know which ones should not be deleted.
 	for (int i = cnt - 1; i >= 0; i--)
 	{
 		auto tex = TexMan.GameByIndex(i);
@@ -198,44 +221,46 @@ void hw_PrecacheTexture(uint8_t *texhitlist, TMap<PClassActor*, bool> &actorhitl
 		{
 			if (texhitlist[i] & (FTextureManager::HIT_Wall | FTextureManager::HIT_Flat | FTextureManager::HIT_Sky))
 			{
-				FMaterial* mat = FMaterial::ValidateTexture(tex, false, false);
+				int scaleflags = 0;
+				if (shouldUpscale(tex, UF_Texture)) scaleflags |= CTF_Upscale;
+
+				FMaterial* mat = FMaterial::ValidateTexture(tex, scaleflags, true);
 				if (mat != nullptr)
 				{
-					for (auto ftex : mat->GetLayerArray())
+					for (auto &layer : mat->GetLayerArray())
 					{
-						usedTextures.Insert(ftex, true);
+						if (layer.layerTexture) layer.layerTexture->MarkForPrecache(0, layer.scaleFlags);
 					}
 				}
 			}
 			if (spritehitlist[i] != nullptr && (*spritehitlist[i]).CountUsed() > 0)
 			{
-				FMaterial *mat = FMaterial::ValidateTexture(tex, true, false);
+				int scaleflags = CTF_Expand;
+				if (shouldUpscale(tex, UF_Sprite)) scaleflags |= CTF_Upscale;
+
+				FMaterial *mat = FMaterial::ValidateTexture(tex, true, true);
 				if (mat != nullptr)
 				{
-					for (auto ftex : mat->GetLayerArray())
+					SpriteHits::Iterator it(*spritehitlist[i]);
+					SpriteHits::Pair* pair;
+					while (it.NextPair(pair))
 					{
-						usedSprites.Insert(ftex, true);
+						for (auto& layer : mat->GetLayerArray())
+						{
+							if (layer.layerTexture) layer.layerTexture->MarkForPrecache(pair->Key, layer.scaleFlags);
+						}
 					}
 				}
 			}
 		}
 	}
 
-	// delete unused textures (i.e. those which didn't get referenced by any material in the cache list.
+	// delete unused hardware textures (i.e. those which didn't get referenced by any material in the cache list.)
-	for (int i = cnt - 1; i >= 0; i--)
+	decltype(allTextures)::Iterator ita(allTextures);
+	decltype(allTextures)::Pair* paira;
+	while (it.NextPair(pair))
 	{
-		auto tex = TexMan.GameByIndex(i);
+		paira->Key->CleanUnused();
-		if (tex != nullptr && tex->GetUseType() != ETextureType::FontChar)
-		{
-			// This is rather counterproductive in a system that can share hardware textures between game textures.
-			// The precacher needs to be redone to account for that. For now, just skip the deletion, for any normal sized map this won't be a problem.
-#if 0
-			if (usedTextures.CheckKey(tex->GetTexture()) == nullptr && usedSprites.CheckKey(tex->GetTexture()) == nullptr)
-			{
-				tex->CleanHardwareData();
-			}
-#endif
-		}
 	}
 
 	if (gl_precache)
@@ -246,7 +271,7 @@ void hw_PrecacheTexture(uint8_t *texhitlist, TMap<PClassActor*, bool> &actorhitl
 
 		FImageSource::BeginPrecaching();
 
-		// cache all used textures
+		// cache all used images
 		for (int i = cnt - 1; i >= 0; i--)
 		{
 			auto gtex = TexMan.GameByIndex(i);
@@ -262,7 +287,7 @@ void hw_PrecacheTexture(uint8_t *texhitlist, TMap<PClassActor*, bool> &actorhitl
 					}
 				}
 
-				// Only register untranslated sprites. Translated ones are very unlikely to require data that can be reused.
+				// Only register untranslated sprite images. Translated ones are very unlikely to require data that can be reused so they can just be created on demand.
 				if (spritehitlist[i] != nullptr && (*spritehitlist[i]).CheckKey(0))
 				{
 					FImageSource::RegisterForPrecache(tex->GetImage(), V_IsTrueColor());

src/rendering/polyrenderer/backend/poly_framebuffer.cpp

@@ -535,16 +535,15 @@ void PolyFrameBuffer::PrecacheMaterial(FMaterial *mat, int translation)
 {
 	if (mat->Source()->GetUseType() == ETextureType::SWCanvas) return;
 
-	int flags = mat->GetScaleFlags();
+	MaterialLayerInfo* layer;
-	FTexture* layer;
 	auto systex = static_cast<PolyHardwareTexture*>(mat->GetLayer(0, translation, &layer));
-	systex->GetImage(layer, translation, flags);
+	systex->GetImage(layer->layerTexture, translation, layer->scaleFlags);
 
-	int numLayers = mat->GetLayers();
+	int numLayers = mat->NumLayers();
 	for (int i = 1; i < numLayers; i++)
 	{
 		auto systex = static_cast<PolyHardwareTexture*>(mat->GetLayer(i, 0, &layer));
-		systex->GetImage(layer, 0, flags);	// fixme: Upscale flags must be disabled for certain layers.
+		systex->GetImage(layer->layerTexture, 0, layer->scaleFlags);	// fixme: Upscale flags must be disabled for certain layers.
 	}
 }
 
@@ -585,10 +584,6 @@ void PolyFrameBuffer::TextureFilterChanged()
 {
 }
 
-void PolyFrameBuffer::StartPrecaching()
-{
-}
-
 void PolyFrameBuffer::BlurScene(float amount)
 {
 }

src/rendering/polyrenderer/backend/poly_framebuffer.h

@@ -43,7 +43,6 @@ public:
 	sector_t *RenderView(player_t *player) override;
 	void SetTextureFilterMode() override;
 	void TextureFilterChanged() override;
-	void StartPrecaching() override;
 	void BeginFrame() override;
 	void BlurScene(float amount) override;
 	void PostProcessScene(int fixedcm, const std::function<void()> &afterBloomDrawEndScene2D) override;

src/rendering/polyrenderer/backend/poly_hwtexture.cpp

@@ -62,17 +62,6 @@ void PolyHardwareTexture::Reset()
 	}
 }
 
-DCanvas *PolyHardwareTexture::GetImage(FTexture *baselayer, const FMaterialState &state)
-{
-	if (!mCanvas)
-	{
-		int flags = state.mMaterial->GetScaleFlags();
-		return GetImage(baselayer, state.mTranslation, flags);
-	}
-
-	return mCanvas.get();
-}
-
 DCanvas *PolyHardwareTexture::GetImage(FTexture *tex, int translation, int flags)
 {
 	if (!mCanvas)

src/rendering/polyrenderer/backend/poly_hwtexture.h

@@ -23,7 +23,6 @@ public:
 	static void ResetAll();
 	void Reset();
 
-	DCanvas *GetImage(FTexture *tex, const FMaterialState &state);
 	DCanvas *GetImage(FTexture *tex, int translation, int flags);
 	PolyDepthStencil *GetDepthStencil(FTexture *tex);
 

src/rendering/polyrenderer/backend/poly_renderstate.cpp

@@ -314,20 +314,19 @@ void PolyRenderState::ApplyMaterial()
 	{
 		mTempTM = mMaterial.mMaterial->Source()->isHardwareCanvas() ? TM_OPAQUE : TM_NORMAL;
 
-		FTexture* layer;
+		MaterialLayerInfo* layer;
 		auto base = static_cast<PolyHardwareTexture*>(mMaterial.mMaterial->GetLayer(0, mMaterial.mTranslation, &layer));
 		if (base)
 		{
-			DCanvas *texcanvas = base->GetImage(layer, mMaterial);
+			DCanvas *texcanvas = base->GetImage(layer->layerTexture, mMaterial.mTranslation, layer->scaleFlags);
 			mDrawCommands->SetTexture(0, texcanvas->GetPixels(), texcanvas->GetWidth(), texcanvas->GetHeight(), texcanvas->IsBgra());
 
-			int numLayers = mMaterial.mMaterial->GetLayers();
+			int numLayers = mMaterial.mMaterial->NumLayers();
 			for (int i = 1; i < numLayers; i++)
 			{
-				FTexture* layer;
 				auto systex = static_cast<PolyHardwareTexture*>(mMaterial.mMaterial->GetLayer(i, 0, &layer));
 
-				texcanvas = systex->GetImage(layer, 0, mMaterial.mMaterial->GetScaleFlags());
+				texcanvas = systex->GetImage(layer->layerTexture, 0, layer->scaleFlags);
 				mDrawCommands->SetTexture(i, texcanvas->GetPixels(), texcanvas->GetWidth(), texcanvas->GetHeight(), texcanvas->IsBgra());
 			}
 		}

src/rendering/swrenderer/r_swscene.cpp

@@ -106,7 +106,7 @@ sector_t *SWSceneDrawer::RenderView(player_t *player)
 			fbtex.reset(MakeGameTexture(new FWrapperTexture(screen->GetWidth(), screen->GetHeight(), V_IsTrueColor()), nullptr, ETextureType::SWCanvas));
 			GetSystemTexture()->AllocateBuffer(screen->GetWidth(), screen->GetHeight(), V_IsTrueColor() ? 4 : 1);
 			auto mat = FMaterial::ValidateTexture(fbtex.get(), false);
-			mat->AddTextureLayer(PaletteTexture);
+			mat->AddTextureLayer(PaletteTexture, false);
 
 			Canvas.reset();
 			Canvas.reset(new DCanvas(screen->GetWidth(), screen->GetHeight(), V_IsTrueColor()));

src/rendering/vulkan/renderer/vk_renderstate.cpp

@@ -228,7 +228,7 @@ void VkRenderState::ApplyRenderPass(int dt)
 	pipelineKey.StencilPassOp = mStencilOp;
 	pipelineKey.ColorMask = mColorMask;
 	pipelineKey.CullMode = mCullMode;
-	pipelineKey.NumTextureLayers = mMaterial.mMaterial ? mMaterial.mMaterial->GetLayers() : 0;
+	pipelineKey.NumTextureLayers = mMaterial.mMaterial ? mMaterial.mMaterial->NumLayers() : 0;
 	pipelineKey.NumTextureLayers = std::max(pipelineKey.NumTextureLayers, SHADER_MIN_REQUIRED_TEXTURE_LAYERS);// Always force minimum 8 textures as the shader requires it
 	if (mSpecialEffect > EFF_NONE)
 	{

src/rendering/vulkan/system/vk_framebuffer.cpp

@@ -647,18 +647,16 @@ void VulkanFrameBuffer::PrecacheMaterial(FMaterial *mat, int translation)
 {
 	if (mat->Source()->GetUseType() == ETextureType::SWCanvas) return;
 
-	// Textures that are already scaled in the texture lump will not get replaced by hires textures.
+	MaterialLayerInfo* layer;
-	int flags = mat->GetScaleFlags();
-	FTexture* layer;
 
 	auto systex = static_cast<VkHardwareTexture*>(mat->GetLayer(0, translation, &layer));
-	systex->GetImage(layer, translation, flags);
+	systex->GetImage(layer->layerTexture, translation, layer->scaleFlags);
 
-	int numLayers = mat->GetLayers();
+	int numLayers = mat->NumLayers();
 	for (int i = 1; i < numLayers; i++)
 	{
 		auto systex = static_cast<VkHardwareTexture*>(mat->GetLayer(i, 0, &layer));
-		systex->GetImage(layer, 0, flags);	// fixme: Upscale flags must be disabled for certain layers.
+		systex->GetImage(layer->layerTexture, 0, layer->scaleFlags);
 	}
 }
 

src/rendering/vulkan/textures/vk_hwtexture.cpp

@@ -374,15 +374,12 @@ VulkanDescriptorSet* VkMaterial::GetDescriptorSet(const FMaterialState& state)
 
 	clampmode = base->GetClampMode(clampmode);
 
-	// Textures that are already scaled in the texture lump will not get replaced by hires textures.
-	int flags = GetScaleFlags();
-
 	for (auto& set : mDescriptorSets)
 	{
 		if (set.descriptor && set.clampmode == clampmode && set.flags == translation) return set.descriptor.get();
 	}
 
-	int numLayers = GetLayers();
+	int numLayers = NumLayers();
 
 	auto fb = GetVulkanFrameBuffer();
 	auto descriptor = fb->GetRenderPassManager()->AllocateTextureDescriptorSet(std::max(numLayers, SHADER_MIN_REQUIRED_TEXTURE_LAYERS));
@@ -392,14 +389,13 @@ VulkanDescriptorSet* VkMaterial::GetDescriptorSet(const FMaterialState& state)
 	VulkanSampler* sampler = fb->GetSamplerManager()->Get(clampmode);
 
 	WriteDescriptors update;
-	FTexture* layer;
+	MaterialLayerInfo *layer;
 	auto systex = static_cast<VkHardwareTexture*>(GetLayer(0, translation, &layer));
-	update.addCombinedImageSampler(descriptor.get(), 0, systex->GetImage(layer, translation, flags)->View.get(), sampler, systex->mImage.Layout);
+	update.addCombinedImageSampler(descriptor.get(), 0, systex->GetImage(layer->layerTexture, translation, layer->scaleFlags)->View.get(), sampler, systex->mImage.Layout);
 	for (int i = 1; i < numLayers; i++)
 	{
 		auto systex = static_cast<VkHardwareTexture*>(GetLayer(i, 0, &layer));
-		// fixme: Upscale flags must be disabled for certain layers.
+		update.addCombinedImageSampler(descriptor.get(), i, systex->GetImage(layer->layerTexture, 0, layer->scaleFlags)->View.get(), sampler, systex->mImage.Layout);
-		update.addCombinedImageSampler(descriptor.get(), i, systex->GetImage(layer, 0, flags)->View.get(), sampler, systex->mImage.Layout);
 	}
 
 	auto dummyImage = fb->GetRenderPassManager()->GetNullTextureView();