cione-comp-lib/es/node_modules/claygl/src/Texture.mjs

`$ yarn add cione-comp-lib` 或者 `$ npm i cione-comp-lib -S`

import Base from "./core/Base.mjs";
import glenum from "./core/glenum.mjs";
import Cache from "./core/Cache.mjs";
var Texture = Base.extend(
  {
    width: 512,
    height: 512,
    type: glenum.UNSIGNED_BYTE,
    format: glenum.RGBA,
    wrapS: glenum.REPEAT,
    wrapT: glenum.REPEAT,
    minFilter: glenum.LINEAR_MIPMAP_LINEAR,
    magFilter: glenum.LINEAR,
    useMipmap: true,
    anisotropic: 1,
    flipY: true,
    sRGB: true,
    unpackAlignment: 4,
    premultiplyAlpha: false,
    dynamic: false,
    NPOT: false,
    __used: 0
  },
  function() {
    this._cache = new Cache();
  },
  {
    getWebGLTexture: function(renderer) {
      var _gl = renderer.gl;
      var cache = this._cache;
      cache.use(renderer.__uid__);
      if (cache.miss("webgl_texture")) {
        cache.put("webgl_texture", _gl.createTexture());
      }
      if (this.dynamic) {
        this.update(renderer);
      } else if (cache.isDirty()) {
        this.update(renderer);
        cache.fresh();
      }
      return cache.get("webgl_texture");
    },
    bind: function() {
    },
    unbind: function() {
    },
    dirty: function() {
      if (this._cache) {
        this._cache.dirtyAll();
      }
    },
    update: function(renderer) {
    },
    updateCommon: function(renderer) {
      var _gl = renderer.gl;
      _gl.pixelStorei(_gl.UNPACK_FLIP_Y_WEBGL, this.flipY);
      _gl.pixelStorei(_gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, this.premultiplyAlpha);
      _gl.pixelStorei(_gl.UNPACK_ALIGNMENT, this.unpackAlignment);
      if (this.format === glenum.DEPTH_COMPONENT) {
        this.useMipmap = false;
      }
      var sRGBExt = renderer.getGLExtension("EXT_sRGB");
      if (this.format === Texture.SRGB && !sRGBExt) {
        this.format = Texture.RGB;
      }
      if (this.format === Texture.SRGB_ALPHA && !sRGBExt) {
        this.format = Texture.RGBA;
      }
      this.NPOT = !this.isPowerOfTwo();
    },
    getAvailableWrapS: function() {
      if (this.NPOT) {
        return glenum.CLAMP_TO_EDGE;
      }
      return this.wrapS;
    },
    getAvailableWrapT: function() {
      if (this.NPOT) {
        return glenum.CLAMP_TO_EDGE;
      }
      return this.wrapT;
    },
    getAvailableMinFilter: function() {
      var minFilter = this.minFilter;
      if (this.NPOT || !this.useMipmap) {
        if (minFilter === glenum.NEAREST_MIPMAP_NEAREST || minFilter === glenum.NEAREST_MIPMAP_LINEAR) {
          return glenum.NEAREST;
        } else if (minFilter === glenum.LINEAR_MIPMAP_LINEAR || minFilter === glenum.LINEAR_MIPMAP_NEAREST) {
          return glenum.LINEAR;
        } else {
          return minFilter;
        }
      } else {
        return minFilter;
      }
    },
    getAvailableMagFilter: function() {
      return this.magFilter;
    },
    nextHighestPowerOfTwo: function(x) {
      --x;
      for (var i = 1; i < 32; i <<= 1) {
        x = x | x >> i;
      }
      return x + 1;
    },
    dispose: function(renderer) {
      var cache = this._cache;
      cache.use(renderer.__uid__);
      var webglTexture = cache.get("webgl_texture");
      if (webglTexture) {
        renderer.gl.deleteTexture(webglTexture);
      }
      cache.deleteContext(renderer.__uid__);
    },
    isRenderable: function() {
    },
    isPowerOfTwo: function() {
    }
  }
);
Object.defineProperty(Texture.prototype, "width", {
  get: function() {
    return this._width;
  },
  set: function(value) {
    this._width = value;
  }
});
Object.defineProperty(Texture.prototype, "height", {
  get: function() {
    return this._height;
  },
  set: function(value) {
    this._height = value;
  }
});
Texture.BYTE = glenum.BYTE;
Texture.UNSIGNED_BYTE = glenum.UNSIGNED_BYTE;
Texture.SHORT = glenum.SHORT;
Texture.UNSIGNED_SHORT = glenum.UNSIGNED_SHORT;
Texture.INT = glenum.INT;
Texture.UNSIGNED_INT = glenum.UNSIGNED_INT;
Texture.FLOAT = glenum.FLOAT;
Texture.HALF_FLOAT = 36193;
Texture.UNSIGNED_INT_24_8_WEBGL = 34042;
Texture.DEPTH_COMPONENT = glenum.DEPTH_COMPONENT;
Texture.DEPTH_STENCIL = glenum.DEPTH_STENCIL;
Texture.ALPHA = glenum.ALPHA;
Texture.RGB = glenum.RGB;
Texture.RGBA = glenum.RGBA;
Texture.LUMINANCE = glenum.LUMINANCE;
Texture.LUMINANCE_ALPHA = glenum.LUMINANCE_ALPHA;
Texture.SRGB = 35904;
Texture.SRGB_ALPHA = 35906;
Texture.COMPRESSED_RGB_S3TC_DXT1_EXT = 33776;
Texture.COMPRESSED_RGBA_S3TC_DXT1_EXT = 33777;
Texture.COMPRESSED_RGBA_S3TC_DXT3_EXT = 33778;
Texture.COMPRESSED_RGBA_S3TC_DXT5_EXT = 33779;
Texture.NEAREST = glenum.NEAREST;
Texture.LINEAR = glenum.LINEAR;
Texture.NEAREST_MIPMAP_NEAREST = glenum.NEAREST_MIPMAP_NEAREST;
Texture.LINEAR_MIPMAP_NEAREST = glenum.LINEAR_MIPMAP_NEAREST;
Texture.NEAREST_MIPMAP_LINEAR = glenum.NEAREST_MIPMAP_LINEAR;
Texture.LINEAR_MIPMAP_LINEAR = glenum.LINEAR_MIPMAP_LINEAR;
Texture.REPEAT = glenum.REPEAT;
Texture.CLAMP_TO_EDGE = glenum.CLAMP_TO_EDGE;
Texture.MIRRORED_REPEAT = glenum.MIRRORED_REPEAT;
var Texture$1 = Texture;
export { Texture$1 as default };