I found a webpage that has published some code for creating effects
with glsl, and I am trying to get them to work in pd
There are some other cool effects, eventually it could be a cool patch idea.
Do yo need a vert? I am trying to plug this into the
deform_texture.pd patch. So far this is the frag that I have worked
out so far:
uniform sampler2D texture;
void main(void)
{
vec2 texCoord = (gl_TexCoord[0].st); // [0.0 ,1.0] x [0.0, 1.0]
vec2 normCoord = 2.0 * texCoord - 1.0; // [-1.0 ,1.0] x [-1.0, 1.0]
normCoordNew = Effect(normCoord)
rNew, phiNew = Effect(r, phi)
float r = length(normCoord); // to polar coords
float phi = atan(normCoord.y, normCoord.x); // to polar coords
r = pow(r, 1.0/1.8) * 0.8
normCoord.x = r * cos(phi);
normCoord.y = r * sin(phi);
texCoord = normCoord / 2.0 + 0.5; // [0.0 ,1.0] x [0.0, 1.0]
color = texture2D(sampler, texCoord);
gl_FragColor = color;
}
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B~
www.cypod.co.nr
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