Compatibility Vertex Color Fix

fix vertex color in compatibility render

Shader code

shader_type spatial;
render_mode blend_mix, depth_draw_opaque, cull_disabled, diffuse_burley, specular_schlick_ggx;
uniform bool compatibility_mode;

vec4 fromLinear(vec4 linearRGB)
{
    bvec3 cutoff = lessThan(linearRGB.rgb, vec3(0.0031308));
    vec3 higher = vec3(1.055)*pow(linearRGB.rgb, vec3(1.0/2.4)) - vec3(0.055);
    vec3 lower = linearRGB.rgb * vec3(12.92);

    return vec4(mix(higher, lower, cutoff), linearRGB.a);
}

void fragment() {
	if(compatibility_mode){
		ALBEDO = fromLinear(COLOR).xyz;
	}else{
		ALBEDO = COLOR.xyz;
	}


}