SlidingBars.vert.txt

/* SlidingBars.vert.txt */

/* Attributes passed from Screen(): See the ProceduralShadingAPI.m file for infos: */
attribute vec4 auxParameters0;
attribute vec4 auxParameters1;
attribute vec4 modulateColor;

varying float BarColor;
varying float BackColor;
varying vec4 Grey;
varying float Width;
varying float Length;
varying float Orientation;
varying float centerX;
varying float centerY;

void main()
{
       /* Apply standard geometric transformations to patch: */
    gl_Position = ftransform();
    /* gl_TexCoord[0] = gl_MultiTexCoord0; */
    gl_TexCoord[0] = (gl_TextureMatrix[0] * gl_MultiTexCoord0) + vec4(-0.5, 0.5, 0.0, 0.0);

    /* Pass first and second color to fragment shader: */
    Grey = modulateColor;
    BarColor = auxParameters0[0];
    BackColor = auxParameters0[1];

    /* Pass variables to the fragment shader for control of grating: */
    Width = auxParameters0[2];
    Length = auxParameters0[3];
    centerX = auxParameters1[0];
    centerY = auxParameters1[1];
    Orientation = auxParameters1[2];
}