Function srgb_to_linear

external/astc-encoder/Utils/astc_blend_test.cpp:37–46

* @brief Linearize an sRGB value. * * @return The linearized value. */

 * @return The linearized value.
 */
static float srgb_to_linear(
	float a
) {
	if (a <= 0.04045f)
	{
		return a * (1.0f / 12.92f);
	}

	return powf((a + 0.055f) * (1.0f / 1.055f), 2.4f);
}

/**
 * @brief sRGB gamma-encode a linear value.