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51 lines
1.2 KiB
51 lines
1.2 KiB
3 years ago
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/**
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* @module ol/webgl/PaletteTexture
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*/
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class PaletteTexture {
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/**
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* @param {string} name The name of the texture.
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* @param {Uint8Array} data The texture data.
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*/
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constructor(name, data) {
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this.name = name;
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this.data = data;
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/**
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* @type {WebGLTexture}
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* @private
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*/
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this.texture_ = null;
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}
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/**
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* @param {WebGLRenderingContext} gl Rendering context.
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* @return {WebGLTexture} The texture.
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*/
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getTexture(gl) {
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if (!this.texture_) {
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const texture = gl.createTexture();
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gl.bindTexture(gl.TEXTURE_2D, texture);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
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gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
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gl.texImage2D(
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gl.TEXTURE_2D,
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0,
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gl.RGBA,
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this.data.length / 4,
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1,
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0,
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gl.RGBA,
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gl.UNSIGNED_BYTE,
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this.data
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);
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this.texture_ = texture;
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}
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return this.texture_;
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}
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}
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export default PaletteTexture;
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