arifd · September 25, 2020 17:51
diff --git a/cheaper_smoothstep.glsl b/cheaper_smoothstep.glsl
 // cheaper smoothstep
 // https://forum.unity.com/threads/how-expensive-is-smooth-step-in-shaders-for-mobile.501809/
 float cheapstep(float a, float b, float x) {
    // remap the value
    float remap = x * (1.0 / (b - a)) - (a / (b - a));
    // clamp it to 0 and 1, as smoothstep would
    return clamp(0., 1., remap);
 }
	// cheaper smoothstep
	// https://forum.unity.com/threads/how-expensive-is-smooth-step-in-shaders-for-mobile.501809/
	float cheapstep(float a, float b, float x) {
	// remap the value
	float remap = x * (1.0 / (b - a)) - (a / (b - a));
	// clamp it to 0 and 1, as smoothstep would
	return clamp(0., 1., remap);
	}