shader_type spatial;
render_mode unshaded, blend_add, fog_disabled, cull_disabled;

uniform sampler2D spark_texture;
varying vec4 passtrough;

void vertex() {
	passtrough = INSTANCE_CUSTOM;

	//MODELVIEW_MATRIX = VIEW_MATRIX * mat4(
	//	vec4(normalize(cross(vec3(0.0, 1.0, 0.0), MAIN_CAM_INV_VIEW_MATRIX[2].xyz)), 0.0),
	//	vec4(0.0, 0.0, 1.0, 0.0),
	//	vec4(normalize(cross(MAIN_CAM_INV_VIEW_MATRIX[0].xyz, vec3(1.0, 0.0, 0.0))), 0.0),
	//	MODEL_MATRIX[3]);
	//MODELVIEW_NORMAL_MATRIX = mat3(MODELVIEW_MATRIX);

}

void fragment() {
	vec2 disp = vec2((cos(UV.y*8.0) * sin(UV.y+passtrough.x*200.0) + cos(UV.y*20.0) * sin(UV.y*70.0+TIME)) * 0.1, COLOR.w-passtrough.y*0.1);
	ALBEDO = texture(spark_texture, (UV + disp) * vec2(0.5, 0.5) + vec2(sin(TIME*0.2+COLOR.w*20.0)), 0.0).xyz * COLOR.xyz * float((UV+disp).x > 0.3 && (UV+disp).x < 0.7);
	//ALBEDO = vec3(float((disp-UV).y < 0.0));
}

//void light() {
	// Called for every pixel for every light affecting the material.
	// Uncomment to replace the default light processing function with this one.
//}