61 lines
1.6 KiB
Plaintext
61 lines
1.6 KiB
Plaintext
//径向模糊
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CCEffect %{
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techniques:
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- passes:
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- vert: vs
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frag: fs
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blendState:
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targets:
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- blend: true
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rasterizerState:
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cullMode: none
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properties:
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texture: { value: white }
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u_point: { value: [0.5, 0.5] }
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u_resolution: { value: [1280, 720] }
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u_Strength: { value: 0.125 }
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}%
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CCProgram vs %{ // 顶点Shader模块开始
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#include <cc-global>
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precision highp float; //定义float高精度
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in vec3 a_position; // 顶点Shader 从渲染管道里面获取的顶点信息,使用attribute来修饰;
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in vec2 a_uv0; // 纹理坐标;
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out vec2 uv0; // 传递给着色Shader，varying 来修饰，进行插值
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void main () {
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gl_Position = cc_matViewProj * vec4(a_position, 1);
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uv0 = a_uv0;
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}
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}%
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CCProgram fs %{
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precision highp float;
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in vec2 uv0;
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uniform sampler2D texture;
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uniform ARGS{
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vec2 u_resolution;
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vec2 u_point;
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float u_Strength;
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};
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void mainImage( out vec4 fragColor, in vec2 fragCoord )
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{
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// const float u_Strength = 0.125;
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const int Samples = 64; //multiple of 2
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vec2 uv = fragCoord.xy;
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vec2 dir = (fragCoord.xy-u_point.xy);
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vec4 color = vec4(0.0,0.0,0.0,0.0);
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for (int i = 0; i < Samples; i += 2) //operating at 2 samples for better performance
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{
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color += texture2D(texture,uv+float(i)/float(Samples)*dir*u_Strength);
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color += texture2D(texture,uv+float(i+1)/float(Samples)*dir*u_Strength);
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}
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fragColor = color/float(Samples);
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}
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void main(void)
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{
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mainImage(gl_FragColor, uv0);
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}
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}%
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