How to use two texture (one is model texture one is contour texture) have the same weight line output by shader?

The first is model texture

The code in fs :

void main(void){

if (drawWireframe)
{
    float ef = edgeFactor();
    color = mix(wireColor, newFaceColor, ef);
}

float depth = logisticDepth(gl_FragCoord.z);

fragColor = vec4(vec3(depth), 1.0f);}

This is contour shader picture:

The code is

float linearizeDepth(float depth)
{
    return (2.0 * near * far) / (far + near - (depth * 2.0 - 1.0) * (far - near));
}

float logisticDepth(float depth, float steepness = 0.1f, float offset = 5.0f)
{
    float zVal = linearizeDepth(depth);
    return (1 / (1 + exp(-steepness * (zVal - offset))));
}

void main(void)
{
    float depth = logisticDepth(gl_FragCoord.z);
     fragColor = vec4(vec3(depth,depth,depth), 1.0f);//-vec4(0,0,0.1,0);        
}

Now the output like this:

And the code is like this

#version 410
out vec4 FragColor;
in vec3 ourColor;
in vec2 TexCoord;
uniform sampler2D texture1;
uniform sampler2D texture2;
uniform int width;
uniform int height;
int half_size=3;
void main()
{
    vec4 color1 = texture(texture1, TexCoord);
    vec4 color2 = texture(texture2, TexCoord);
    vec4 color3;

    if(color2.g<=color1.g &&color2.g!=1)
        color3.rgb=vec3(1,0,0);
    else //if(color2.r==1)
        color3.rgb=vec3(1,1,1);

    FragColor = color2;
}

But I need the output lines are same weight