56 lines
1.1 KiB
Plaintext
56 lines
1.1 KiB
Plaintext
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//溶解特效
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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_time: { value: 1.0 }
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}%
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CCProgram vs %{
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#include <cc-global>
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precision highp float;
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in vec3 a_position;
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in vec2 a_uv0;
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out vec2 uv0;
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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; //定义高精度
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uniform sampler2D texture; //纹理
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uniform ARGS {
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//时间 根据时间计算需要丢弃的像素颜色值范围，也就是溶解的范围
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float u_time;
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};
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in vec2 uv0;
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void main()
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{
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float time = u_time;
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vec4 c = texture2D(texture,uv0);
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float height = c.g;
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if(height < time)
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{
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//丢弃像素，相当于溶解效果
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discard;
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}
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if(height < time + 0.1) {
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//这里可以对溶解边缘进行一些处理，比如透明度减少等
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c.a = c.a-0.1;
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}
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//给片元（像素）赋值
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gl_FragColor = c;
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}
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}%
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