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GLSL shader that scroll texture
/*VERTEX_PROGRAM*/

in vec4 in_Vertex;
in vec4 in_TexCoord;

uniform mat4 ModelViewMatrix;
uniform mat4 ProjectionMatrix;

out vec2 TexCoord;

void main()
{
     gl_Position = ProjectionMatrix * ModelViewMatrix * in_Vertex;

     TexCoord = vec2( in_TexCoord );
}

/*FRAGMENT_PROGRAM*/

in vec2 TexCoord;

uniform sampler2D Texture0;

/// Updated in external code
uniform float Time;

out vec4 out_FragColor;

void main()
{
   /// "u" coordinate is altered
   out_FragColor = texture( Texture0, vec2(TexCoord.x + Time, TexCoord.y) );
}