cocos shader 之 模糊滤镜

概述效果: VSH: #ifdef OPENGL_ESprecision mediump vec2;precision mediump float;#endif// Attributesattribute vec3 a_position;attribute vec2 a_texCoord;attribute vec4 a_color;// Varyings#ifdef GL_ES

效果:

VSH:

#ifdef OPENGL_ESprecision mediump vec2;precision mediump float;#endif// Attributesattribute vec3 a_position;attribute vec2 a_texCoord;attribute vec4 a_color;// varyings#ifdef GL_ESvarying vec2 v_texCoord;#elsevarying vec2 v_texCoord;#endifvarying vec4 v_fragmentcolor;voID main(){    gl_position = CC_PMatrix * vec4(a_position,1.0);    v_texCoord = a_texCoord;    v_fragmentcolor = a_color;}

FSH:

#ifdef GL_ESprecision mediump float;#endifvarying vec4 v_fragmentcolor;varying vec2 v_texCoord;uniform vec2 resolution;//uniform float blurRadius;vec4 blur(vec2 p){    vec4 col = vec4(0);    vec2 unit = 1.0/resolution;    float r = 10.0;    float nCount = 0.0;    for (float x = -r; x < r; ++x) {        for (float y = -r; y < r; ++y) {            float weight = (r-abs(x)) * (r-abs(y));            col += texture2D(CC_Texture0,p + vec2(x*unit.x,y*unit.y))*weight;            nCount += weight;        }    }    return col / nCount;}voID main(voID){    gl_Fragcolor = blur(v_texCoord);}

总结

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