Eu gostaria de criar um sombreador assim que pegue as coordenadas do mundo e crie ondas. Eu gostaria de analisar o vídeo e conhecer as etapas necessárias. Não estou procurando códigos, estou apenas procurando idéias sobre como implementar isso usando GLSL ou HLSL ou qualquer outra linguagem.

Aqui, GIF de baixa qualidade e fps no caso de link quebrado.

Aqui está o shader de fragmento:

#version 330 core

// Interpolated values from the vertex shaders
in vec2 UV;
in vec3 Position_worldspace;
in vec3 Normal_cameraspace;
in vec3 EyeDirection_cameraspace;
in vec3 LightDirection_cameraspace;

// highlight effect
in float pixel_z;       // fragment z coordinate in [LCS]
uniform float animz;    // highlight animation z coordinate [GCS]

// Ouput data
out vec4 color;
vec3 c;

// Values that stay constant for the whole mesh.
uniform sampler2D myTextureSampler;
uniform mat4 MV;
uniform vec3 LightPosition_worldspace;

void main(){

    // Light emission properties
    // You probably want to put them as uniforms
    vec3 LightColor = vec3(1,1,1);
    float LightPower = 50.0f;

    // Material properties
    vec3 MaterialDiffuseColor = texture( myTextureSampler, UV ).rgb;
    vec3 MaterialAmbientColor = vec3(0.1,0.1,0.1) * MaterialDiffuseColor;
    vec3 MaterialSpecularColor = vec3(0.3,0.3,0.3);

    // Distance to the light
    float distance = length( LightPosition_worldspace - Position_worldspace );

    // Normal of the computed fragment, in camera space
    vec3 n = normalize( Normal_cameraspace );
    // Direction of the light (from the fragment to the light)
    vec3 l = normalize( LightDirection_cameraspace );
    // Cosine of the angle between the normal and the light direction, 
    // clamped above 0
    //  - light is at the vertical of the triangle -> 1
    //  - light is perpendicular to the triangle -> 0
    //  - light is behind the triangle -> 0
    float cosTheta = clamp( dot( n,l ), 0,1 );

    // Eye vector (towards the camera)
    vec3 E = normalize(EyeDirection_cameraspace);
    // Direction in which the triangle reflects the light
    vec3 R = reflect(-l,n);
    // Cosine of the angle between the Eye vector and the Reflect vector,
    // clamped to 0
    //  - Looking into the reflection -> 1
    //  - Looking elsewhere -> < 1
    float cosAlpha = clamp( dot( E,R ), 0,1 );

    c = 
        // Ambient : simulates indirect lighting
        MaterialAmbientColor +
        // Diffuse : "color" of the object
        MaterialDiffuseColor * LightColor * LightPower * cosTheta / (distance*distance) +
        // Specular : reflective highlight, like a mirror
        MaterialSpecularColor * LightColor * LightPower * pow(cosAlpha,5) / (distance*distance);


    float z;
    z=abs(pixel_z-animz);   // distance to animated z coordinate
    z*=1.5;                 // scale to change highlight width
    if (z<1.0)
        {
        z*=0.5*3.1415926535897932384626433832795;   // z=<0,M_PI/2> 0 in the middle
        z=0.5*cos(z);
        color+=vec3(0.0,z,z);
        }

        color=vec4(c,1.0);

}

aqui está o vertex shader:

#version 330 core

// Input vertex data, different for all executions of this shader.
layout(location = 0) in vec3 vertexPosition_modelspace;
layout(location = 1) in vec2 vertexUV;
layout(location = 2) in vec3 vertexNormal_modelspace;

// Output data ; will be interpolated for each fragment.
out vec2 UV;
out vec3 Position_worldspace;
out vec3 Normal_cameraspace;
out vec3 EyeDirection_cameraspace;
out vec3 LightDirection_cameraspace;

out float pixel_z;      // fragment z coordinate in [LCS]

// Values that stay constant for the whole mesh.
uniform mat4 MVP;
uniform mat4 V;
uniform mat4 M;
uniform vec3 LightPosition_worldspace;

void main(){


    pixel_z=vertexPosition_modelspace.z;
    // Output position of the vertex, in clip space : MVP * position
    gl_Position =  MVP * vec4(vertexPosition_modelspace,1);

    // Position of the vertex, in worldspace : M * position
    Position_worldspace = (M * vec4(vertexPosition_modelspace,1)).xyz;

    // Vector that goes from the vertex to the camera, in camera space.
    // In camera space, the camera is at the origin (0,0,0).
    vec3 vertexPosition_cameraspace = ( V * M * vec4(vertexPosition_modelspace,1)).xyz;
    EyeDirection_cameraspace = vec3(0,0,0) - vertexPosition_cameraspace;

    // Vector that goes from the vertex to the light, in camera space. M is ommited because it's identity.
    vec3 LightPosition_cameraspace = ( V * vec4(LightPosition_worldspace,1)).xyz;
    LightDirection_cameraspace = LightPosition_cameraspace + EyeDirection_cameraspace;

    // Normal of the the vertex, in camera space
    Normal_cameraspace = ( V * M * vec4(vertexNormal_modelspace,0)).xyz; // Only correct if ModelMatrix does not scale the model ! Use its inverse transpose if not.

    // UV of the vertex. No special space for this one.
    UV = vertexUV;
}