diff --git a/include/render/color.h b/include/render/color.h
index 128b345e1..7f133f5bd 100644
--- a/include/render/color.h
+++ b/include/render/color.h
@@ -97,4 +97,9 @@ void wlr_color_primaries_to_xyz(const struct wlr_color_primaries *primaries, flo
 void wlr_color_transfer_function_get_default_luminance(enum wlr_color_transfer_function tf,
 	struct wlr_color_luminances *lum);
 
+/**
+ * Apply a color transfer function's EOTF⁻¹ operation.
+ */
+float wlr_color_transfer_function_eval_inverse_eotf(enum wlr_color_transfer_function tf, float x);
+
 #endif
diff --git a/render/color.c b/render/color.c
index 0a1a67be3..198e1c26d 100644
--- a/render/color.c
+++ b/render/color.c
@@ -177,7 +177,7 @@ static float bt1886_eval_inverse_eotf(float x) {
 	return powf(x / a, 1.0 / 2.4) - b;
 }
 
-static float transfer_function_eval_inverse_eotf(
+float wlr_color_transfer_function_eval_inverse_eotf(
 		enum wlr_color_transfer_function tf, float x) {
 	switch (tf) {
 	case WLR_COLOR_TRANSFER_FUNCTION_SRGB:
@@ -198,7 +198,7 @@ static void color_transform_inverse_eotf_eval(
 		struct wlr_color_transform_inverse_eotf *tr,
 		float out[static 3], const float in[static 3]) {
 	for (size_t i = 0; i < 3; i++) {
-		out[i] = transfer_function_eval_inverse_eotf(tr->tf, in[i]);
+		out[i] = wlr_color_transfer_function_eval_inverse_eotf(tr->tf, in[i]);
 	}
 }