basic twitch integration working well, many bugs

addons/water_shader/shaders/bottom.gdshader

@@ -0,0 +1,39 @@
+shader_type spatial;
+
+uniform float height_scale = 50.0;
+uniform float uv_scale = 400.0;
+uniform float texture_scale = 20.0;
+
+uniform sampler2D stone_texture;
+uniform sampler2D bottom;
+
+varying vec2 uv; 
+varying float height; 
+
+void vertex()
+{
+	uv = VERTEX.xz / uv_scale;
+	height = texture(bottom, uv).x * height_scale;
+	VERTEX.y += height;
+	
+	vec2 e = vec2(0.01, 0.0);
+	vec3 normal = normalize(vec3(
+		texture(bottom, uv - e).x * height_scale - texture(bottom, uv + e).x * height_scale, 
+		2.0 * e.x, 
+		texture(bottom, uv - e.yx).x * height_scale - texture(bottom, uv + e.yx).x * height_scale
+		));
+	NORMAL = normal;
+}
+
+float normalize_float(float value, float min_v, float max_v) {
+	float clamped_value = clamp(value, min_v, max_v);
+	return  (clamped_value - min_v) / (max_v - min_v);
+}
+
+void fragment() {
+	float greens = normalize_float(height, 30.0, 60.0);
+	ALBEDO.rgb = texture(stone_texture, uv * texture_scale).rgb * vec3(0.2, greens, 0.0);
+	
+	METALLIC = .5;
+	ROUGHNESS = .7;
+}