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DCTL_OFX/Satin_OFX.dctl

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+// Satin OFX DCTL
+
+DEFINE_UI_PARAMS(MAX_ITER, Satin, DCTLUI_SLIDER_INT, 2, 1, 5, 1)
+DEFINE_UI_PARAMS(time, Motion, DCTLUI_SLIDER_FLOAT, 0, 0, 1, 0.001)
+
+__DEVICE__ float3 transform(int p_Width, int p_Height, int p_X, int p_Y, float p_R, float p_G, float p_B)
+{
+float X = (float)p_X;
+float Y = (float)p_Y;
+float width = (float)p_Width;
+float height = (float)p_Height;
+Y = height - Y;
+float2 uv = make_float2(X / width, Y / height);
+float TIME = time * 20;
+
+float2 p = uv * 8;
+float2 i = p;
+float c = 0;
+float inten = 0.15f;
+float r = length(p + make_float2(_sinf(TIME), _sinf(TIME * 0.433f + 2)) * 3);
+
+for (int n = 0; n < MAX_ITER; n++) {
+float t = r - TIME * (1 - (1.9f / (n + 1)));
+t = r - TIME / (n + 0.6f);
+i = i - (p + make_float2(_cosf(t - i.x - r) + _sinf(t + i.y), _sinf(t - i.y) + _cosf(t + i.x) + r));
+c += 1 / length( make_float2((_sinf(i.x + t) / inten), (_cosf(i.y + t) / inten)));
+}
+c /= MAX_ITER;
+r = 1.5f - 0.25f * r;
+
+float3 RGB = make_float3(c, c, c) * make_float3(2.4f, 2, 2.5f) - 0.15f;
+return RGB;
+}