RGBATriplet border_color(0.2f, 0.4f, 0.6f, 0.8f); // Same as the pixel in data[].
CHECK(effect->set_vec4("border_color", (float *)&border_color));
RGBATriplet border_color(0.2f, 0.4f, 0.6f, 0.8f); // Same as the pixel in data[].
CHECK(effect->set_vec4("border_color", (float *)&border_color));