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Merge pull request #4758 from AnalyticalGraphicsInc/texture-compression
Texture compression
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| /*global define*/ | ||
| define([ | ||
| './defined', | ||
| './defineProperties' | ||
| ], function( | ||
| defined, | ||
| defineProperties | ||
| ) { | ||
| 'use strict'; | ||
|
|
||
| /** | ||
| * Describes a compressed texture and contains a compressed texture buffer. | ||
| * | ||
| * @param {PixelFormat} internalFormat The pixel format of the compressed texture. | ||
| * @param {Number} width The width of the texture. | ||
| * @param {Number} height The height of the texture. | ||
| * @param {Uint8Array} buffer The compressed texture buffer. | ||
| */ | ||
| function CompressedTextureBuffer(internalFormat, width, height, buffer) { | ||
| this._format = internalFormat; | ||
| this._width = width; | ||
| this._height = height; | ||
| this._buffer = buffer; | ||
| } | ||
|
|
||
| defineProperties(CompressedTextureBuffer.prototype, { | ||
| /** | ||
| * The format of the compressed texture. | ||
| * @type PixelFormat | ||
| * @readonly | ||
| */ | ||
| internalFormat : { | ||
| get : function() { | ||
| return this._format; | ||
| } | ||
| }, | ||
| /** | ||
| * The width of the texture. | ||
| * @type Number | ||
| * @readonly | ||
| */ | ||
| width : { | ||
| get : function() { | ||
| return this._width; | ||
| } | ||
| }, | ||
| /** | ||
| * The height of the texture. | ||
| * @type Number | ||
| * @readonly | ||
| */ | ||
| height : { | ||
| get : function() { | ||
| return this._height; | ||
| } | ||
| }, | ||
| /** | ||
| * The compressed texture buffer. | ||
| * @type Uint8Array | ||
| * @readonly | ||
| */ | ||
| bufferView : { | ||
| get : function() { | ||
| return this._buffer; | ||
| } | ||
| } | ||
| }); | ||
|
|
||
| /** | ||
| * Creates a shallow clone of a compressed texture buffer. | ||
| * | ||
| * @param {CompressedTextureBuffer} object The compressed texture buffer to be cloned. | ||
| * @return {CompressedTextureBuffer} A shallow clone of the compressed texture buffer. | ||
| */ | ||
| CompressedTextureBuffer.clone = function(object) { | ||
| if (!defined(object)) { | ||
| return undefined; | ||
| } | ||
|
|
||
| return new CompressedTextureBuffer(object._format, object._width, object._height, object._buffer); | ||
| }; | ||
|
|
||
| /** | ||
| * Creates a shallow clone of this compressed texture buffer. | ||
| * | ||
| * @return {CompressedTextureBuffer} A shallow clone of the compressed texture buffer. | ||
| */ | ||
| CompressedTextureBuffer.prototype.clone = function() { | ||
| return CompressedTextureBuffer.clone(this); | ||
| }; | ||
|
|
||
| return CompressedTextureBuffer; | ||
| }); |
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