export default /* glsl */`

// http://www.russellcottrell.com/photo/matrixCalculator.htm

// Linear sRGB => XYZ => Linear Display P3
const mat3 LINEAR_SRGB_TO_LINEAR_DISPLAY_P3 = mat3(
	vec3( 0.8224621, 0.177538, 0.0 ),
	vec3( 0.0331941, 0.9668058, 0.0 ),
	vec3( 0.0170827, 0.0723974, 0.9105199 )
);

// Linear Display P3 => XYZ => Linear sRGB
const mat3 LINEAR_DISPLAY_P3_TO_LINEAR_SRGB = mat3(
	vec3( 1.2249401, - 0.2249404, 0.0 ),
	vec3( - 0.0420569, 1.0420571, 0.0 ),
	vec3( - 0.0196376, - 0.0786361, 1.0982735 )
);

vec4 LinearSRGBToLinearDisplayP3( in vec4 value ) {
	return vec4( value.rgb * LINEAR_SRGB_TO_LINEAR_DISPLAY_P3, value.a );
}

vec4 LinearDisplayP3ToLinearSRGB( in vec4 value ) {
	return vec4( value.rgb * LINEAR_DISPLAY_P3_TO_LINEAR_SRGB, value.a );
}

vec4 LinearTransferOETF( in vec4 value ) {
	return value;
}

vec4 sRGBTransferOETF( in vec4 value ) {
	return vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );
}

// @deprecated, r156
vec4 LinearToLinear( in vec4 value ) {
	return value;
}

// @deprecated, r156
vec4 LinearTosRGB( in vec4 value ) {
	return sRGBTransferOETF( value );
}
`;