1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 precision mediump float; 15 uniform sampler2D u_Texture; 16 uniform vec2 u_Scale; 17 varying vec2 v_TexCoordinate; 18 void main() { 19 float weights[11]; 20 weights[0] = 0.047748641153356156; 21 weights[1] = 0.05979670798364139; 22 weights[2] = 0.07123260215138659; 23 weights[3] = 0.08071711293576822; 24 weights[4] = 0.08700369673862933; 25 weights[5] = 0.08920620580763855; 26 weights[6] = 0.08700369673862933; 27 weights[7] = 0.08071711293576822; 28 weights[8] = 0.07123260215138659; 29 weights[9] = 0.05979670798364139; 30 weights[10] = 0.047748641153356156; 31 vec4 color = vec4(0.0, 0.0, 0.0, 0.0); 32 for (int i = 0; i < 11; i++) { 33 vec2 coords = v_TexCoordinate.xy + ((float(i) - 5.0) * u_Scale); 34 color += texture2D(u_Texture, coords) * weights[i]; 35 } 36 gl_FragColor = color; 37 }
