I'm using gl_ClipDistance for clipping. When displaying only the surface, everything is fine, but when I add the lines, the issue shown in the image below occurs. What could be causing this?


 
fragment-face
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#version 430 core
layout (location=0) in vec3 aPos;
layout (location=1) in float valuef;
out mat4 vmodel;
uniform mat4 model;
uniform mat4 view;
uniform mat4 projection;

uniform int planeNum; 
uniform float flip; 
uniform vec4 plane[6];

void main()
{
   vmodel = model;

    value = valuef;

   vPosition = vec3(model * vec4(aPos, 1.0));
   gl_Position = projection * view * model*vec4(aPos, 1.0);

   for(int i=0;i<planeNum;i++)
   {
      gl_ClipDistance[i] = dot(vec4(aPos, 1.0), plane[i])*flip;
   }
}
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fragment-Curve
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#version 430 core
layout (location=0) in vec3 aPos;
out vec3 aColor;
uniform mat4 model;
uniform mat4 view;
uniform mat4 projection;
uniform vec3 curveColor;

uniform int planeNum; 
uniform float flip; 
uniform vec4 plane[6];

void main()
{    
    aColor = curveColor;

    gl_Position = projection * view * model * vec4(aPos,1.0);

    for(int i=0;i<planeNum;i++)
   {
      gl_ClipDistance[i] =flip* dot(vec4(aPos, 1.0), plane[i]);
   }
}
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