World Space Gradient in Next-Pass (Y-Axis)

ℹ️ As this is a Next Pass shader it will not overwrite your current material / textures

This is a simple next-pass shader which you can use to apply a gradient.

The origin is based on the real origin of the object. Use the top and bottom color using the alpha value for strength.

Setup:

1. Navigate to your Material where you want to apply the shader
2. In Next Pass choose New ShaderMaterial
3. Apply the shader code
4. Fine tune in Shader Parameters

Shader code

shader_type spatial;

uniform vec4 color_bottom : source_color = vec4(0.0, 0.0, 0.0, 0.8);
uniform vec4 color_top    : source_color = vec4(0.0, 0.0, 0.0, 0.0);

uniform float min_height = 0.0;
uniform float max_height = 3.0;

varying vec3 world_position;

void vertex() {
	world_position = (MODEL_MATRIX * vec4(VERTEX.xy, 0.0, 1.0)).xyz;
}

void fragment() {
	float height = world_position.y - NODE_POSITION_WORLD.y;

	float factor = clamp((height - min_height) / (max_height - min_height), 0.0, 1.0);

	ALBEDO = mix(color_bottom.rgb, color_top.rgb, factor);
	ALPHA = mix(color_bottom.a, color_top.a, factor);
}

Tags