- did a bit of optimization on FGameTexture.

Since all material layers except the brightmaps are relatively rare encounters these were taken out of the main texture object and offloaded to a substructure that is only allocated on demand.

source/common/textures/gametexture.cpp

@@ -140,16 +140,27 @@ void FGameTexture::AddAutoMaterials()
 		const char* path;
 		RefCountedPtr<FTexture> FGameTexture::* pointer;
 	};
+	struct AutoTextureSearchPath2
+	{
+		const char* path;
+		RefCountedPtr<FTexture> FMaterialLayers::* pointer;
+	};
 
 	static AutoTextureSearchPath autosearchpaths[] =
 	{
 		{ "brightmaps/", &FGameTexture::Brightmap }, // For backwards compatibility, only for short names
 	{ "materials/brightmaps/", &FGameTexture::Brightmap },
-	{ "materials/normalmaps/", &FGameTexture::Normal },
+	};
-	{ "materials/specular/", &FGameTexture::Specular },
+
-	{ "materials/metallic/", &FGameTexture::Metallic },
+	static AutoTextureSearchPath2 autosearchpaths2[] =
-	{ "materials/roughness/", &FGameTexture::Roughness },
+	{
-	{ "materials/ao/", &FGameTexture::AmbientOcclusion }
+	{ "materials/detailmaps/", &FMaterialLayers::Detailmap },
+	{ "materials/glowmaps/", &FMaterialLayers::Glowmap },
+	{ "materials/normalmaps/", &FMaterialLayers::Normal },
+	{ "materials/specular/", &FMaterialLayers::Specular },
+	{ "materials/metallic/", &FMaterialLayers::Metallic },
+	{ "materials/roughness/", &FMaterialLayers::Roughness },
+	{ "materials/ao/", &FMaterialLayers::AmbientOcclusion }
 	};
 
 	if (flags & GTexf_AutoMaterialsAdded) return; // do this only once
@@ -181,6 +192,24 @@ void FGameTexture::AddAutoMaterials()
 			}
 		}
 	}
+	for (size_t i = 0; i < countof(autosearchpaths2); i++)
+	{
+		auto& layer = autosearchpaths2[i];
+		if (!this->Layers || this->Layers.get()->*(layer.pointer) == nullptr)	// only if no explicit assignment had been done.
+		{
+			FStringf lookup("%s%s%s", layer.path, fullname ? "" : "auto/", searchname.GetChars());
+			auto lump = fileSystem.CheckNumForFullName(lookup, false, ns_global, true);
+			if (lump != -1)
+			{
+				auto bmtex = TexMan.FindGameTexture(fileSystem.GetFileFullName(lump), ETextureType::Any, FTextureManager::TEXMAN_TryAny);
+				if (bmtex != nullptr)
+				{
+					if (this->Layers == nullptr) this->Layers = std::make_unique<FMaterialLayers>();
+					this->Layers.get()->* (layer.pointer) = bmtex->GetTexture();
+				}
+			}
+		}
+	}
 	flags |= GTexf_AutoMaterialsAdded;
 }
 
@@ -283,7 +312,7 @@ bool FGameTexture::ShouldExpandSprite()
 		expandSprite = false;
 		return false;
 	}
-	if (Glowmap != NULL && (Base->GetWidth() != Glowmap->GetWidth() || Base->GetHeight() != Glowmap->GetHeight()))
+	if (Layers && Layers->Glowmap != NULL && (Base->GetWidth() != Layers->Glowmap->GetWidth() || Base->GetHeight() != Layers->Glowmap->GetHeight()))
 	{
 		// same restriction for the glow map
 		expandSprite = false;

source/common/textures/gametexture.h

@@ -1,5 +1,6 @@
 #pragma once
 #include <stdint.h>
+#include <memory>
 #include "vectors.h"
 #include "floatrect.h"
 #include "refcounted.h"
@@ -62,6 +63,18 @@ enum EGameTexFlags
 	GTexf_NoTrim = 1024,					// Don't perform trimming on this texture.
 };
 
+struct FMaterialLayers
+{
+	RefCountedPtr<FTexture> Detailmap;
+	RefCountedPtr<FTexture> Glowmap;
+	RefCountedPtr<FTexture> Normal;							// Normal map texture
+	RefCountedPtr<FTexture> Specular;						// Specular light texture for the diffuse+normal+specular light model
+	RefCountedPtr<FTexture> Metallic;						// Metalness texture for the physically based rendering (PBR) light model
+	RefCountedPtr<FTexture> Roughness;						// Roughness texture for PBR
+	RefCountedPtr<FTexture> AmbientOcclusion;				// Ambient occlusion texture for PBR
+	RefCountedPtr<FTexture> CustomShaderTextures[MAX_CUSTOM_HW_SHADER_TEXTURES]; // Custom texture maps for custom hardware shaders
+};
+
 // Refactoring helper to allow piece by piece adjustment of the API
 class FGameTexture
 {
@@ -71,14 +84,7 @@ class FGameTexture
 	// Material layers. These are shared so reference counting is used.
 	RefCountedPtr<FTexture> Base;
 	RefCountedPtr<FTexture> Brightmap;
-	RefCountedPtr<FTexture> Detailmap;
+	std::unique_ptr<FMaterialLayers> Layers;
-	RefCountedPtr<FTexture> Glowmap;
-	RefCountedPtr<FTexture> Normal;							// Normal map texture
-	RefCountedPtr<FTexture> Specular;						// Specular light texture for the diffuse+normal+specular light model
-	RefCountedPtr<FTexture> Metallic;						// Metalness texture for the physically based rendering (PBR) light model
-	RefCountedPtr<FTexture> Roughness;						// Roughness texture for PBR
-	RefCountedPtr<FTexture> AmbientOcclusion;				// Ambient occlusion texture for PBR
-	RefCountedPtr<FTexture> CustomShaderTextures[MAX_CUSTOM_HW_SHADER_TEXTURES]; // Custom texture maps for custom hardware shaders
 
 	FString Name;
 	FTextureID id;
@@ -204,14 +210,25 @@ public:
 		if (lay.Glossiness > -1000) Glossiness = lay.Glossiness;
 		if (lay.SpecularLevel > -1000) SpecularLevel = lay.SpecularLevel;
 		if (lay.Brightmap) Brightmap = lay.Brightmap->GetTexture();
-		if (lay.Normal) Normal = lay.Normal->GetTexture();
+
-		if (lay.Specular) Specular = lay.Specular->GetTexture();
+		bool needlayers = (lay.Normal || lay.Specular || lay.Metallic || lay.Roughness || lay.AmbientOcclusion);
-		if (lay.Metallic) Metallic = lay.Metallic->GetTexture();
+		for (int i = 0; i < MAX_CUSTOM_HW_SHADER_TEXTURES && !needlayers; i++)
-		if (lay.Roughness) Roughness = lay.Roughness->GetTexture();
+		{
-		if (lay.AmbientOcclusion) AmbientOcclusion = lay.AmbientOcclusion->GetTexture();
+			if (lay.CustomShaderTextures[i]) needlayers = true;
+		}
+		if (needlayers)
+		{
+			Layers = std::make_unique<FMaterialLayers>();
+
+			if (lay.Normal) Layers->Normal = lay.Normal->GetTexture();
+			if (lay.Specular) Layers->Specular = lay.Specular->GetTexture();
+			if (lay.Metallic) Layers->Metallic = lay.Metallic->GetTexture();
+			if (lay.Roughness) Layers->Roughness = lay.Roughness->GetTexture();
+			if (lay.AmbientOcclusion) Layers->AmbientOcclusion = lay.AmbientOcclusion->GetTexture();
 			for (int i = 0; i < MAX_CUSTOM_HW_SHADER_TEXTURES; i++)
 			{
-			if (lay.CustomShaderTextures[i]) CustomShaderTextures[i] = lay.CustomShaderTextures[i]->GetTexture();
+				if (lay.CustomShaderTextures[i]) Layers->CustomShaderTextures[i] = lay.CustomShaderTextures[i]->GetTexture();
+			}
 		}
 	}
 	float GetGlossiness() const { return Glossiness; }
@@ -306,15 +323,22 @@ public:
 	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() })
+		for (auto tex : { Base.get(), Brightmap.get() })
 		{
 			if (tex != nullptr) layers.Push(tex);
 		}
-		for (auto& tex : CustomShaderTextures)
+		if (Layers)
+		{
+			for (auto tex : { Layers->Detailmap.get(), Layers->Glowmap.get(), Layers->Normal.get(), Layers->Specular.get(), Layers->Metallic.get(), Layers->Roughness.get(), Layers->AmbientOcclusion.get() })
+			{
+				if (tex != nullptr) layers.Push(tex);
+			}
+			for (auto& tex : Layers->CustomShaderTextures)
 			{
 				if (tex != nullptr) layers.Push(tex.get());
 			}
 		}
+	}
 
 	FVector2 GetDetailScale() const
 	{
@@ -335,28 +359,34 @@ public:
 	}
 	FTexture* GetGlowmap()
 	{
-		return Glowmap.get();
+		if (!Layers) return nullptr;
+		return Layers->Glowmap.get();
 	}
 	FTexture* GetDetailmap()
 	{
-		return Detailmap.get();
+		if (!Layers) return nullptr;
+		return Layers->Detailmap.get();
 	}
 
 	void SetGlowmap(FTexture *T)
 	{
-		Glowmap = T;
+		if (!Layers) Layers = std::make_unique<FMaterialLayers>();
+		Layers->Glowmap = T;
 	}
 	void SetDetailmap(FTexture* T)
 	{
-		Detailmap = T;
+		if (!Layers) Layers = std::make_unique<FMaterialLayers>();
+		Layers->Detailmap = T;
 	}
 	void SetNormalmap(FTexture* T)
 	{
-		Normal = T;
+		if (!Layers) Layers = std::make_unique<FMaterialLayers>();
+		Layers->Normal = T;
 	}
 	void SetSpecularmap(FTexture* T)
 	{
-		Specular = T;
+		if (!Layers) Layers = std::make_unique<FMaterialLayers>();
+		Layers->Specular = T;
 	}
 
 };

source/common/textures/hw_material.cpp

@@ -79,17 +79,17 @@ FMaterial::FMaterial(FGameTexture * tx, int scaleflags)
 			mShaderIndex = tx->isWarped(); // This picks SHADER_Warp1 or SHADER_Warp2
 		}
 		// Note that the material takes no ownership of the texture!
-		else if (tx->Normal.get() && tx->Specular.get())
+		else if (tx->Layers && tx->Layers->Normal.get() && tx->Layers->Specular.get())
 		{
-			for (auto &texture : { tx->Normal.get(), tx->Specular.get() })
+			for (auto &texture : { tx->Layers->Normal.get(), tx->Layers->Specular.get() })
 			{
 				mTextureLayers.Push({ texture, 0, -1 });
 			}
 			mShaderIndex = SHADER_Specular;
 		}
-		else if (tx->Normal.get() && tx->Metallic.get() && tx->Roughness.get() && tx->AmbientOcclusion.get())
+		else if (tx->Layers && tx->Layers->Normal.get() && tx->Layers->Metallic.get() && tx->Layers->Roughness.get() && tx->Layers->AmbientOcclusion.get())
 		{
-			for (auto &texture : { tx->Normal.get(), tx->Metallic.get(), tx->Roughness.get(), tx->AmbientOcclusion.get() })
+			for (auto &texture : { tx->Layers->Normal.get(), tx->Layers->Metallic.get(), tx->Layers->Roughness.get(), tx->Layers->AmbientOcclusion.get() })
 			{
 				mTextureLayers.Push({ texture, 0, -1 });
 			}
@@ -108,18 +108,18 @@ FMaterial::FMaterial(FGameTexture * tx, int scaleflags)
 		{ 
 			mTextureLayers.Push({ placeholder->GetTexture(), 0, -1 });
 		}
-		if (tx->Detailmap.get())
+		if (tx->Layers && tx->Layers->Detailmap.get())
 		{
-			mTextureLayers.Push({ tx->Detailmap.get(), 0, CLAMP_NONE });
+			mTextureLayers.Push({ tx->Layers->Detailmap.get(), 0, CLAMP_NONE });
 			mLayerFlags |= TEXF_Detailmap;
 		}
 		else
 		{
 			mTextureLayers.Push({ placeholder->GetTexture(), 0, -1 });
 		}
-		if (tx->Glowmap.get())
+		if (tx->Layers && tx->Layers->Glowmap.get())
 		{
-			mTextureLayers.Push({ tx->Glowmap.get(), scaleflags, -1 });
+			mTextureLayers.Push({ tx->Layers->Glowmap.get(), scaleflags, -1 });
 			mLayerFlags |= TEXF_Glowmap;
 		}
 		else
@@ -133,9 +133,9 @@ FMaterial::FMaterial(FGameTexture * tx, int scaleflags)
 			if (index >= FIRST_USER_SHADER)
 			{
 				const UserShaderDesc& usershader = usershaders[index - FIRST_USER_SHADER];
-				if (usershader.shaderType == mShaderIndex) // Only apply user shader if it matches the expected material
+				if (tx->Layers && usershader.shaderType == mShaderIndex) // Only apply user shader if it matches the expected material
 				{
-					for (auto& texture : tx->CustomShaderTextures)
+					for (auto& texture : tx->Layers->CustomShaderTextures)
 					{
 						if (texture == nullptr) continue;
 						mTextureLayers.Push({ texture.get(), 0 });	// scalability should be user-definable.

source/common/textures/texturemanager.cpp

@@ -426,7 +426,7 @@ FTextureID FTextureManager::AddGameTexture (FGameTexture *texture, bool addtohas
 		hash = -1;
 	}
 
-	TextureHash hasher = { texture, -1, -1, -1, hash };
+	TextureDescriptor hasher = { texture, -1, -1, -1, hash };
 	int trans = Textures.Push (hasher);
 	Translation.Push (trans);
 	if (bucket >= 0) HashFirst[bucket] = trans;
@@ -1150,7 +1150,7 @@ void FTextureManager::AddLocalizedVariants()
 								uint32_t langid = MAKE_ID(lang[0], lang[1], lang[2], 0);
 								uint64_t comboid = (uint64_t(langid) << 32) | origTex.GetIndex();
 								LocalizedTextures.Insert(comboid, tex.GetIndex());
-								Textures[origTex.GetIndex()].HasLocalization = true;
+								Textures[origTex.GetIndex()].Flags |= TEXFLAG_HASLOCALIZATION;
 							}
 							else
 							{

source/common/textures/texturemanager.h

@@ -29,7 +29,7 @@ private:
 	{
 		if ((unsigned)texnum >= Textures.Size()) return -1;
 		if (animate) texnum = Translation[texnum];
-		if (localize && Textures[texnum].HasLocalization) texnum = ResolveLocalizedTexture(texnum);
+		if (localize && Textures[texnum].Flags & TEXFLAG_HASLOCALIZATION) texnum = ResolveLocalizedTexture(texnum);
 		return texnum;
 	}
 
@@ -183,17 +183,22 @@ private:
 
 	// Switches
 
-	struct TextureHash
+	struct TextureDescriptor
 	{
 		FGameTexture* Texture;
 		int Paletted;		// redirection to paletted variant
 		int FrontSkyLayer;	// and front sky layer,
 		int RawTexture;		
 		int HashNext;
-		bool HasLocalization;
+		uint64_t Flags;
+	};
+	enum : uint64_t
+	{
+		TEXFLAG_HASLOCALIZATION = 1,
+		TEXFLAG_FIRSTUSER = 65536,	// this leaves 16 flags to the texture manager and 48 flags to the user
 	};
 	enum { HASH_END = -1, HASH_SIZE = 1027 };
-	TArray<TextureHash> Textures;
+	TArray<TextureDescriptor> Textures;
 	TMap<uint64_t, int> LocalizedTextures;
 	int HashFirst[HASH_SIZE];
 	FTextureID DefaultTexture;