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		<h1>Texture Constants</h1>

		<h2>Mapping Modes</h2>
		<code>
		THREE.UVMapping
		THREE.CubeReflectionMapping 
		THREE.CubeRefractionMapping
		THREE.EquirectangularReflectionMapping
		THREE.EquirectangularRefractionMapping 
		THREE.CubeUVReflectionMapping
		</code>

		<p>
			These define the texture's mapping mode.<br />
			[page:Constant UVMapping] is the default, and maps the texture using the
			mesh's UV coordinates.<br /><br />
			The rest define environment mapping types.<br /><br />
			[page:Constant CubeReflectionMapping] and [page:Constant CubeRefractionMapping] are for use with a [page:CubeTexture CubeTexture],
			which is made up of six textures, one for each face of the cube.
			[page:Constant CubeReflectionMapping] is the default for a
			[page:CubeTexture CubeTexture]. <br /><br />
			[page:Constant EquirectangularReflectionMapping] and [page:Constant EquirectangularRefractionMapping] are for use with an equirectangular
			environment map. Also called a lat-long map, an equirectangular texture
			represents a 360-degree view along the horizontal centerline, and a
			180-degree view along the vertical axis, with the top and bottom edges of
			the image corresponding to the north and south poles of a mapped
			sphere.<br /><br />
			See the [example:webgl_materials_envmaps materials / envmaps] example.
		</p>

		<h2>Wrapping Modes</h2>
		<code>
		THREE.RepeatWrapping 
		THREE.ClampToEdgeWrapping
		THREE.MirroredRepeatWrapping
		</code>
		<p>
			These define the texture's [page:Texture.wrapS wrapS] and
			[page:Texture.wrapT wrapT] properties, which define horizontal and
			vertical texture wrapping.<br /><br />
			With [page:constant RepeatWrapping] the texture will simply repeat to
			infinity.<br /><br />
			[page:constant ClampToEdgeWrapping] is the default. The last pixel of the
			texture stretches to the edge of the mesh.<br /><br />
			With [page:constant MirroredRepeatWrapping] the texture will repeats to
			infinity, mirroring on each repeat.
		</p>

		<h2>Magnification Filters</h2>
		<code>
		THREE.NearestFilter 
		THREE.LinearFilter
		</code>

		<p>
			For use with a texture's [page:Texture.magFilter magFilter] property,
			these define the texture magnification function to be used when the pixel
			being textured maps to an area less than or equal to one texture element
			(texel).<br /><br />

			[page:constant NearestFilter] returns the value of the texture element
			that is nearest (in Manhattan distance) to the specified texture
			coordinates.<br /><br />

			[page:constant LinearFilter] is the default and returns the weighted
			average of the four texture elements that are closest to the specified
			texture coordinates, and can include items wrapped or repeated from other
			parts of a texture, depending on the values of [page:Texture.wrapS wrapS]
			and [page:Texture.wrapT wrapT], and on the exact mapping.
		</p>

		<h2>Minification Filters</h2>
		<code>
		THREE.NearestFilter 
		THREE.NearestMipmapNearestFilter
		THREE.NearestMipmapLinearFilter 
		THREE.LinearFilter
		THREE.LinearMipmapNearestFilter 
		THREE.LinearMipmapLinearFilter
		</code>

		<p>
			For use with a texture's [page:Texture.minFilter minFilter] property,
			these define the texture minifying function that is used whenever the
			pixel being textured maps to an area greater than one texture element
			(texel).<br /><br />

			In addition to [page:constant NearestFilter] and [page:constant LinearFilter], the following four functions can be used for
			minification:<br /><br />

			[page:constant NearestMipmapNearestFilter] chooses the mipmap that most
			closely matches the size of the pixel being textured and uses the
			[page:constant NearestFilter] criterion (the texel nearest to the center
			of the pixel) to produce a texture value.<br /><br />

			[page:constant NearestMipmapLinearFilter] chooses the two mipmaps that
			most closely match the size of the pixel being textured and uses the
			[page:constant NearestFilter] criterion to produce a texture value from
			each mipmap. The final texture value is a weighted average of those two
			values.<br /><br />

			[page:constant LinearMipmapNearestFilter] chooses the mipmap that most
			closely matches the size of the pixel being textured and uses the
			[page:constant LinearFilter] criterion (a weighted average of the four
			texels that are closest to the center of the pixel) to produce a texture
			value.<br /><br />

			[page:constant LinearMipmapLinearFilter] is the default and chooses the
			two mipmaps that most closely match the size of the pixel being textured
			and uses the [page:constant LinearFilter] criterion to produce a texture
			value from each mipmap. The final texture value is a weighted average of
			those two values.<br /><br />

			See the [example:webgl_materials_texture_filters materials / texture / filters] example.
		</p>

		<h2>Types</h2>
		<code>
		THREE.UnsignedByteType 
		THREE.ByteType 
		THREE.ShortType
		THREE.UnsignedShortType 
		THREE.IntType 
		THREE.UnsignedIntType
		THREE.FloatType 
		THREE.HalfFloatType 
		THREE.UnsignedShort4444Type
		THREE.UnsignedShort5551Type 
		THREE.UnsignedInt248Type
		</code>
		<p>
			For use with a texture's [page:Texture.type type] property, which must
			correspond to the correct format. See below for details.<br /><br />

			[page:constant UnsignedByteType] is the default.
		</p>

		<h2>Formats</h2>
		<code>
		THREE.AlphaFormat 
		THREE.RedFormat 
		THREE.RedIntegerFormat 
		THREE.RGFormat
		THREE.RGIntegerFormat 
		THREE.RGBAFormat 
		THREE.RGBAIntegerFormat
		THREE.LuminanceFormat 
		THREE.LuminanceAlphaFormat 
		THREE.DepthFormat
		THREE.DepthStencilFormat
		</code>
		<p>
			For use with a texture's [page:Texture.format format] property, these
			define how elements of a 2d texture, or `texels`, are read by shaders.<br /><br />

			[page:constant AlphaFormat] discards the red, green and blue components
			and reads just the alpha component.<br /><br />

			[page:constant RedFormat] discards the green and blue components and reads
			just the red component. (can only be used with a WebGL 2 rendering
			context).
			<br /><br />

			[page:constant RedIntegerFormat] discards the green and blue components
			and reads just the red component. The texels are read as integers instead
			of floating point. (can only be used with a WebGL 2 rendering context).
			<br /><br />

			[page:constant RGFormat] discards the alpha, and blue components and reads
			the red, and green components. (can only be used with a WebGL 2 rendering
			context).
			<br /><br />

			[page:constant RGIntegerFormat] discards the alpha, and blue components
			and reads the red, and green components. The texels are read as integers
			instead of floating point. (can only be used with a WebGL 2 rendering
			context).
			<br /><br />

			[page:constant RGBAFormat] is the default and reads the red, green, blue
			and alpha components.<br /><br />

			[page:constant RGBAIntegerFormat] is the default and reads the red, green,
			blue and alpha components. The texels are read as integers instead of
			floating point. (can only be used with a WebGL 2 rendering context).
			<br /><br />

			[page:constant LuminanceFormat] reads each element as a single luminance
			component. This is then converted to a floating point, clamped to the
			range [0,1], and then assembled into an RGBA element by placing the
			luminance value in the red, green and blue channels, and attaching 1.0 to
			the alpha channel.<br /><br />

			[page:constant LuminanceAlphaFormat] reads each element as a
			luminance/alpha double. The same process occurs as for the [page:constant LuminanceFormat], except that the alpha channel may have values other than
			`1.0`.<br /><br />

			[page:constant DepthFormat] reads each element as a single depth value,
			converts it to floating point, and clamps to the range [0,1]. This is the
			default for [page:DepthTexture DepthTexture].<br /><br />

			[page:constant DepthStencilFormat] reads each element is a pair of depth
			and stencil values. The depth component of the pair is interpreted as in
			[page:constant DepthFormat]. The stencil component is interpreted based on
			the depth + stencil internal format.
			<br /><br />

			Note that the texture must have the correct [page:Texture.type type] set,
			as described above. See
			[link:https://developer.mozilla.org/en/docs/Web/API/WebGLRenderingContext/texImage2D WebGLRenderingContext.texImage2D] for details.
		</p>

		<h2>DDS / ST3C Compressed Texture Formats</h2>
		<code>
		THREE.RGB_S3TC_DXT1_Format 
		THREE.RGBA_S3TC_DXT1_Format
		THREE.RGBA_S3TC_DXT3_Format 
		THREE.RGBA_S3TC_DXT5_Format
		</code>
		<p>
			For use with a [page:CompressedTexture CompressedTexture]'s
			[page:Texture.format format] property, these require support for the
			[link:https://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_s3tc/ WEBGL_compressed_texture_s3tc] extension. <br /><br />

			There are four [link:https://en.wikipedia.org/wiki/S3_Texture_Compression S3TC] formats available via this extension. These are:<br />
			[page:constant RGB_S3TC_DXT1_Format]: A DXT1-compressed image in an RGB
			image format.<br />
			[page:constant RGBA_S3TC_DXT1_Format]: A DXT1-compressed image in an RGB
			image format with a simple on/off alpha value.<br />
			[page:constant RGBA_S3TC_DXT3_Format]: A DXT3-compressed image in an RGBA
			image format. Compared to a 32-bit RGBA texture, it offers 4:1
			compression.<br />
			[page:constant RGBA_S3TC_DXT5_Format]: A DXT5-compressed image in an RGBA
			image format. It also provides a 4:1 compression, but differs to the DXT3
			compression in how the alpha compression is done.<br />
		</p>

		<h2>PVRTC Compressed Texture Formats</h2>
		<code>
		THREE.RGB_PVRTC_4BPPV1_Format
		THREE.RGB_PVRTC_2BPPV1_Format
		THREE.RGBA_PVRTC_4BPPV1_Format 
		THREE.RGBA_PVRTC_2BPPV1_Format
		</code>
		<p>
			For use with a [page:CompressedTexture CompressedTexture]'s
			[page:Texture.format format] property, these require support for the
			[link:https://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_pvrtc/	WEBGL_compressed_texture_pvrtc] extension. <br />
			PVRTC is typically only available on mobile devices with PowerVR chipsets,
			which are mainly Apple devices.<br /><br />

			There are four [link:https://en.wikipedia.org/wiki/PVRTC PVRTC] formats
			available via this extension. These are:<br />
			[page:constant RGB_PVRTC_4BPPV1_Format]: RGB compression in 4-bit mode.
			One block for each 4×4 pixels.<br />
			[page:constant RGB_PVRTC_2BPPV1_Format]: RGB compression in 2-bit mode.
			One block for each 8×4 pixels.<br />
			[page:constant RGBA_PVRTC_4BPPV1_Format]: RGBA compression in 4-bit mode.
			One block for each 4×4 pixels.<br />
			[page:constant RGBA_PVRTC_2BPPV1_Format]: RGBA compression in 2-bit mode.
			One block for each 8×4 pixels.<br />
		</p>

		<h2>ETC Compressed Texture Format</h2>
		<code>
		THREE.RGB_ETC1_Format 
		THREE.RGB_ETC2_Format 
		THREE.RGBA_ETC2_EAC_Format
		</code>
		<p>
			For use with a [page:CompressedTexture CompressedTexture]'s
			[page:Texture.format format] property, these require support for the
			[link:https://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_etc1/ WEBGL_compressed_texture_etc1] (ETC1) or
			[link:https://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_etc/ WEBGL_compressed_texture_etc] (ETC2) extensions. <br /><br />
		</p>

		<h2>ASTC Compressed Texture Format</h2>
		<code>
		THREE.RGBA_ASTC_4x4_Format 
		THREE.RGBA_ASTC_5x4_Format
		THREE.RGBA_ASTC_5x5_Format 
		THREE.RGBA_ASTC_6x5_Format
		THREE.RGBA_ASTC_6x6_Format 
		THREE.RGBA_ASTC_8x5_Format
		THREE.RGBA_ASTC_8x6_Format 
		THREE.RGBA_ASTC_8x8_Format
		THREE.RGBA_ASTC_10x5_Format 
		THREE.RGBA_ASTC_10x6_Format
		THREE.RGBA_ASTC_10x8_Format 
		THREE.RGBA_ASTC_10x10_Format
		THREE.RGBA_ASTC_12x10_Format 
		THREE.RGBA_ASTC_12x12_Format
		</code>
		<p>
			For use with a [page:CompressedTexture CompressedTexture]'s
			[page:Texture.format format] property, these require support for the
			[link:https://www.khronos.org/registry/webgl/extensions/WEBGL_compressed_texture_astc/ WEBGL_compressed_texture_astc] extension. <br /><br />
		</p>

		<h2>BPTC Compressed Texture Format</h2>
		<code>
		THREE.RGBA_BPTC_Format
		</code>
		<p>
			For use with a [page:CompressedTexture CompressedTexture]'s
			[page:Texture.format format] property, these require support for the
			[link:https://www.khronos.org/registry/webgl/extensions/EXT_texture_compression_bptc/ EXT_texture_compression_bptc] extension. <br /><br />
		</p>

		<h2>Texture Comparison functions</h2>
		<code>
		THREE.NeverCompare
		THREE.LessCompare
		THREE.EqualCompare
		THREE.LessEqualCompare
		THREE.GreaterCompare
		THREE.NotEqualCompare
		THREE.GreaterEqualCompare
		THREE.AlwaysCompare
		</code>

		<h2>Internal Formats</h2>
		<code>
		'ALPHA'
		'RGB'
		'RGBA'
		'LUMINANCE'
		'LUMINANCE_ALPHA'
		'RED_INTEGER'
		'R8'
		'R8_SNORM'
		'R8I'
		'R8UI'
		'R16I'
		'R16UI'
		'R16F'
		'R32I'
		'R32UI'
		'R32F'
		'RG8'
		'RG8_SNORM'
		'RG8I'
		'RG8UI'
		'RG16I'
		'RG16UI'
		'RG16F'
		'RG32I'
		'RG32UI'
		'RG32F'
		'RGB565'
		'RGB8'
		'RGB8_SNORM'
		'RGB8I'
		'RGB8UI'
		'RGB16I'
		'RGB16UI'
		'RGB16F'
		'RGB32I'
		'RGB32UI'
		'RGB32F'
		'RGB9_E5'
		'SRGB8'
		'R11F_G11F_B10F'
		'RGBA4'
		'RGBA8'
		'RGBA8_SNORM'
		'RGBA8I'
		'RGBA8UI'
		'RGBA16I'
		'RGBA16UI'
		'RGBA16F'
		'RGBA32I'
		'RGBA32UI'
		'RGBA32F'
		'RGB5_A1'
		'RGB10_A2'
		'RGB10_A2UI'
		'SRGB8_ALPHA8'
		'DEPTH_COMPONENT16'
		'DEPTH_COMPONENT24'
		'DEPTH_COMPONENT32F'
		'DEPTH24_STENCIL8'
		'DEPTH32F_STENCIL8'
		</code>

		<p>
			Heads up: changing the internal format of a texture will only affect the
			texture when using a WebGL 2 rendering context.<br /><br />

			For use with a texture's [page:Texture.internalFormat internalFormat]
			property, these define how elements of a texture, or `texels`, are stored
			on the GPU.<br /><br />

			[page:constant R8] stores the red component on 8 bits.<br /><br />

			[page:constant R8_SNORM] stores the red component on 8 bits. The component
			is stored as normalized. <br /><br />

			[page:constant R8I] stores the red component on 8 bits. The component is
			stored as an integer. <br /><br />

			[page:constant R8UI] stores the red component on 8 bits. The component is
			stored as an unsigned integer. <br /><br />

			[page:constant R16I] stores the red component on 16 bits. The component is
			stored as an integer. <br /><br />

			[page:constant R16UI] stores the red component on 16 bits. The component
			is stored as an unsigned integer. <br /><br />

			[page:constant R16F] stores the red component on 16 bits. The component is
			stored as floating point. <br /><br />

			[page:constant R32I] stores the red component on 32 bits. The component is
			stored as an integer. <br /><br />

			[page:constant R32UI] stores the red component on 32 bits. The component
			is stored as an unsigned integer. <br /><br />

			[page:constant R32F] stores the red component on 32 bits. The component is
			stored as floating point. <br /><br />

			[page:constant RG8] stores the red and green components on 8 bits each.<br /><br />

			[page:constant RG8_SNORM] stores the red and green components on 8 bits
			each. Every component is stored as normalized.
			<br /><br />

			[page:constant RG8I] stores the red and green components on 8 bits each.
			Every component is stored as an integer.
			<br /><br />

			[page:constant RG8UI] stores the red and green components on 8 bits each.
			Every component is stored as an unsigned integer.
			<br /><br />

			[page:constant RG16I] stores the red and green components on 16 bits each.
			Every component is stored as an integer.
			<br /><br />

			[page:constant RG16UI] stores the red and green components on 16 bits
			each. Every component is stored as an unsigned integer.
			<br /><br />

			[page:constant RG16F] stores the red and green components on 16 bits each.
			Every component is stored as floating point.
			<br /><br />

			[page:constant RG32I] stores the red and green components on 32 bits each.
			Every component is stored as an integer.
			<br /><br />

			[page:constant RG32UI] stores the red and green components on 32 bits.
			Every component is stored as an unsigned integer.
			<br /><br />

			[page:constant RG32F] stores the red and green components on 32 bits.
			Every component is stored as floating point.
			<br /><br />

			[page:constant RGB8] stores the red, green, and blue components on 8 bits
			each. [page:constant RGB8_SNORM] stores the red, green, and blue
			components on 8 bits each. Every component is stored as normalized.
			<br /><br />

			[page:constant RGB8I] stores the red, green, and blue components on 8 bits
			each. Every component is stored as an integer.
			<br /><br />

			[page:constant RGB8UI] stores the red, green, and blue components on 8
			bits each. Every component is stored as an unsigned integer.
			<br /><br />

			[page:constant RGB16I] stores the red, green, and blue components on 16
			bits each. Every component is stored as an integer.
			<br /><br />

			[page:constant RGB16UI] stores the red, green, and blue components on 16
			bits each. Every component is stored as an unsigned integer.
			<br /><br />

			[page:constant RGB16F] stores the red, green, and blue components on 16
			bits each. Every component is stored as floating point
			<br /><br />

			[page:constant RGB32I] stores the red, green, and blue components on 32
			bits each. Every component is stored as an integer.
			<br /><br />

			[page:constant RGB32UI] stores the red, green, and blue components on 32
			bits each. Every component is stored as an unsigned integer.
			<br /><br />

			[page:constant RGB32F] stores the red, green, and blue components on 32
			bits each. Every component is stored as floating point
			<br /><br />

			[page:constant R11F_G11F_B10F] stores the red, green, and blue components
			respectively on 11 bits, 11 bits, and 10bits. Every component is stored as
			floating point.
			<br /><br />

			[page:constant RGB565] stores the red, green, and blue components
			respectively on 5 bits, 6 bits, and 5 bits.<br /><br />

			[page:constant RGB9_E5] stores the red, green, and blue components on 9
			bits each.<br /><br />

			[page:constant RGBA8] stores the red, green, blue, and alpha components on
			8 bits each.<br /><br />

			[page:constant RGBA8_SNORM] stores the red, green, blue, and alpha
			components on 8 bits. Every component is stored as normalized.
			<br /><br />

			[page:constant RGBA8I] stores the red, green, blue, and alpha components
			on 8 bits each. Every component is stored as an integer.
			<br /><br />

			[page:constant RGBA8UI] stores the red, green, blue, and alpha components
			on 8 bits. Every component is stored as an unsigned integer.
			<br /><br />

			[page:constant RGBA16I] stores the red, green, blue, and alpha components
			on 16 bits. Every component is stored as an integer.
			<br /><br />

			[page:constant RGBA16UI] stores the red, green, blue, and alpha components
			on 16 bits. Every component is stored as an unsigned integer.
			<br /><br />

			[page:constant RGBA16F] stores the red, green, blue, and alpha components
			on 16 bits. Every component is stored as floating point.
			<br /><br />

			[page:constant RGBA32I] stores the red, green, blue, and alpha components
			on 32 bits. Every component is stored as an integer.
			<br /><br />

			[page:constant RGBA32UI] stores the red, green, blue, and alpha components
			on 32 bits. Every component is stored as an unsigned integer.
			<br /><br />

			[page:constant RGBA32F] stores the red, green, blue, and alpha components
			on 32 bits. Every component is stored as floating point.
			<br /><br />

			[page:constant RGB5_A1] stores the red, green, blue, and alpha components
			respectively on 5 bits, 5 bits, 5 bits, and 1 bit.<br /><br />

			[page:constant RGB10_A2] stores the red, green, blue, and alpha components
			respectively on 10 bits, 10 bits, 10 bits and 2 bits.<br /><br />

			[page:constant RGB10_A2UI] stores the red, green, blue, and alpha
			components respectively on 10 bits, 10 bits, 10 bits and 2 bits. Every
			component is stored as an unsigned integer.
			<br /><br />

			[page:constant SRGB8] stores the red, green, and blue components on 8 bits
			each.<br /><br />

			[page:constant SRGB8_ALPHA8] stores the red, green, blue, and alpha
			components on 8 bits each.<br /><br />

			[page:constant DEPTH_COMPONENT16] stores the depth component on 16bits.<br /><br />

			[page:constant DEPTH_COMPONENT24] stores the depth component on 24bits.<br /><br />

			[page:constant DEPTH_COMPONENT32F] stores the depth component on 32bits.
			The component is stored as floating point.<br /><br />

			[page:constant DEPTH24_STENCIL8] stores the depth, and stencil components
			respectively on 24 bits and 8 bits. The stencil component is stored as an
			unsigned integer.
			<br /><br />

			[page:constant DEPTH32F_STENCIL8] stores the depth, and stencil components
			respectively on 32 bits and 8 bits. The depth component is stored as
			floating point, and the stencil component as an unsigned integer.
			<br /><br />

			Note that the texture must have the correct [page:Texture.type type] set,
			as well as the correct [page:Texture.format format]. See
			[link:https://developer.mozilla.org/en/docs/Web/API/WebGLRenderingContext/texImage2D WebGLRenderingContext.texImage2D], and
			[link:https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/texImage3D WebGL2RenderingContext.texImage3D], for more details regarding the
			possible combination of [page:Texture.format format],
			[page:Texture.internalFormat internalFormat], and [page:Texture.type type].<br /><br />

			For more in-depth information regarding internal formats, you can also
			refer directly to the
			[link:https://www.khronos.org/registry/webgl/specs/latest/2.0/ WebGL2 Specification] and to the
			[link:https://www.khronos.org/registry/OpenGL/specs/es/3.0/es_spec_3.0.pdf OpenGL ES 3.0 Specification].
		</p>

		<h2>Depth Packing</h2>
		<code>
		THREE.BasicDepthPacking 
		THREE.RGBADepthPacking
		</code>
		<p>
			For use with the [page:MeshDepthMaterial.depthPacking depthPacking]
			property of `MeshDepthMaterial`.
		</p>

		<h2>Color Space</h2>
		<code>
		THREE.NoColorSpace = ""
		THREE.SRGBColorSpace = "srgb"
		THREE.LinearSRGBColorSpace = "srgb-linear"
		</code>
		<p>
			Used to define the color space of textures (and the output color space of
			the renderer).<br /><br />

			If the color space type is changed after the texture has already been used
			by a material, you will need to set [page:Material.needsUpdate Material.needsUpdate] to `true` to make the material recompile.<br /><br />
		</p>

		<h2>Source</h2>
		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/src/constants.js src/constants.js]
		</p>
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