Engine.Texture

/**
 * Copyright 1998-2008 Epic Games, Inc. All Rights Reserved.
 */
class Texture extends Surface
	native
	abstract
	dependson(Engine);

// This needs to be mirrored in UnEdFact.cpp.
enum TextureCompressionSettings
{
	TC_Default,
	TC_Normalmap,
	TC_Displacementmap,
	TC_NormalmapAlpha,
	TC_Grayscale,
	TC_HighDynamicRange
};

// @warning: When you update this, you must add an entry to GPixelFormats(see UnRenderUtils.cpp) and also update XeTools.cpp.
enum EPixelFormat
{
	PF_Unknown,
	PF_A32B32G32R32F,
	PF_A8R8G8B8,
	PF_G8,
	PF_G16,
	PF_DXT1,
	PF_DXT3,
	PF_DXT5,
	PF_UYVY,
	PF_FloatRGB,		// A RGB FP format with platform-specific implementation, for use with render targets
	PF_FloatRGBA,		// A RGBA FP format with platform-specific implementation, for use with render targets
	PF_DepthStencil,	// A depth+stencil format with platform-specific implementation, for use with render targets
	PF_ShadowDepth,		// A depth format with platform-specific implementation, for use with render targets
	PF_FilteredShadowDepth, // A depth format with platform-specific implementation, that can be filtered by hardware
	PF_R32F,
	PF_G16R16,
	PF_G16R16F,
	PF_G32R32F,
	PF_A2B10G10R10,
	PF_A16B16G16R16,
	PF_D24
};

enum TextureFilter
{
	TF_Nearest,
	TF_Linear
};

enum TextureAddress
{
	TA_Wrap,
	TA_Clamp,
	TA_Mirror
};

// @warning: update UTextureFactory::StaticConstructor in UnEdFact.cpp if this is changed
// @warning: update FTextureLODSettings::Initialize and GetTextureGroupNames in Texture.cpp if this is changed
enum TextureGroup
{
	TEXTUREGROUP_World,
	TEXTUREGROUP_WorldNormalMap,
	TEXTUREGROUP_WorldSpecular,
	TEXTUREGROUP_Character,
	TEXTUREGROUP_CharacterNormalMap,
	TEXTUREGROUP_CharacterSpecular,
	TEXTUREGROUP_Weapon,
	TEXTUREGROUP_WeaponNormalMap,
	TEXTUREGROUP_WeaponSpecular,
	TEXTUREGROUP_Vehicle,
	TEXTUREGROUP_VehicleNormalMap,
	TEXTUREGROUP_VehicleSpecular,
	TEXTUREGROUP_Effects,
	TEXTUREGROUP_Skybox,
	TEXTUREGROUP_UI,
	TEXTUREGROUP_LightAndShadowMap,
	TEXTUREGROUP_RenderTarget
};

//@warning: make sure to update UTexture::PostEditChange if you add an option that might require recompression.

// Texture settings.

var()	bool							SRGB;
var		bool							RGBE;

var()	float							UnpackMin[4],
										UnpackMax[4];

var native const UntypedBulkData_Mirror	SourceArt{FByteBulkData};

var()	bool							CompressionNoAlpha;
var		bool							CompressionNone;
var		bool							CompressionNoMipmaps;
var()	bool							CompressionFullDynamicRange;
var()	bool							DeferCompression;

/** Allows artists to specify that a texture should never have its miplevels dropped which is useful for e.g. HUD and menu textures */
var()	bool							NeverStream;

/** When TRUE, mip-maps are dithered for smooth transitions. */
var()	bool							bDitherMipMapAlpha;

/** If TRUE, the color border pixels are preseved by mipmap generation.  One flag per color channel. */
var()	bool							bPreserveBorderR;
var()	bool							bPreserveBorderG;
var()	bool							bPreserveBorderB;
var()	bool							bPreserveBorderA;

/** Whether the async resource release process has already been kicked off or not */
var		transient const private bool	bAsyncResourceReleaseHasBeenStarted;

var()	TextureCompressionSettings		CompressionSettings;

/** The texture filtering mode to use when sampling this texture. */
var()	TextureFilter					Filter;

/** Texture group this texture belongs to for LOD bias */
var()	TextureGroup					LODGroup;

/** A bias to the index of the top mip level to use. */
var()	int								LODBias;
/** Cached combined group and texture LOD bias to use.	*/
var		transient int					CachedCombinedLODBias;

var()	editconst string				SourceFilePath;         // Path to the resource used to construct this texture
var()	editconst string				SourceFileTimestamp;    // Date/Time-stamp of the file from the last import

/** The texture's resource. */
var native const pointer				Resource{FTextureResource};

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defaultproperties
{
   SRGB=True
   UnpackMax(0)=1.000000
   UnpackMax(1)=1.000000
   UnpackMax(2)=1.000000
   UnpackMax(3)=1.000000
   Filter=TF_Linear
   Name="Default__Texture"
   ObjectArchetype=Surface'Engine.Default__Surface'
}