terrain_color.gdshader

shader_type spatial;

uniform sampler2D terrain_color;

uniform float min_height = 0;
uniform float max_height = 1;

varying float vertex_y;

float inverseLerp(float a, float b, float value){
    float val = (value - a) / (b - a);
    return clamp(0.01,1.0,val);
}



void fragment() {
	float height = vertex_y;
	float position = inverseLerp(min_height,max_height,height);
	vec3 color = texture(terrain_color,vec2(position,0)).rgb;
	

	ALBEDO = color;
	
}


void vertex(){
	vertex_y = VERTEX.y;
}