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/**
* animated 2D sine pattern.
*/
__kernel void sineWave(__global float4 * vertex, int size, float time) {
unsigned int x = get_global_id(0);
unsigned int y = get_global_id(1);
// calculate uv coordinates
float u = x / (float) size;
float v = y / (float) size;
u = u*2.0f - 1.0f;
v = v*2.0f - 1.0f;
// calculate simple sine wave pattern
float freq = 4.0f;
float w = sin(u*freq + time) * cos(v*freq + time) * 0.5f;
// write output vertex
vertex[y*size + x] = (float4)(u*10.0f, w*10.0f, v*10.0f, 1.0f);
}
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