text: define(["require", "exports"], function (require, exports) {
      "use strict";
      Object.defineProperty(exports, "__esModule", { value: true });
      class GenerateFragBlurSource {
          static GenerateFragBlurSource(kernelSize) {
              const kernel = GenerateFragBlurSource.GAUSSIAN_VALUES[kernelSize];
              const halfLength = kernel.length;
              let fragSource = GenerateFragBlurSource.fragTemplate;
              let blurLoop = '';
              const template = 'gl_FragColor += texture2D(uSampler, vBlurTexCoords[%index%]) * %value%;';
              let value;
              for (let i = 0; i < kernelSize; i++) {
                  let blur = template.replace('%index%', i.toString());
                  value = i;
                  if (i >= halfLength) {
                      value = kernelSize - i - 1;
                  }
                  blur = blur.replace('%value%', kernel[value]);
                  blurLoop += blur;
                  blurLoop += '\n';
              }
              fragSource = fragSource.replace('%blur%', blurLoop);
              fragSource = fragSource.replace('%size%', kernelSize);
              return fragSource;
          }
      }
      GenerateFragBlurSource.GAUSSIAN_VALUES = {
          5: [0.153388, 0.221461, 0.250301],
          7: [0.071303, 0.131514, 0.189879, 0.214607],
          9: [0.028532, 0.067234, 0.124009, 0.179044, 0.20236],
          11: [0.0093, 0.028002, 0.065984, 0.121703, 0.175713, 0.198596],
          13: [0.002406, 0.009255, 0.027867, 0.065666, 0.121117, 0.174868, 0.197641],
          15: [0.000489, 0.002403, 0.009246, 0.02784, 0.065602, 0.120999, 0.174697, 0.197448],
      };
      GenerateFragBlurSource.fragTemplate = [
          'varying vec2 vBlurTexCoords[%size%];',
          'uniform sampler2D uSampler;',
          'void main(void)',
          '{',
          '    gl_FragColor = vec4(0.0);',
          '    %blur%',
          '}',
      ].join('\n');
      exports.GenerateFragBlurSource = GenerateFragBlurSource;
  });
  //# sourceMappingURL=GenerateFragBlurSource.js.map