/*
 * Copyright (C) 2020, Inria
 * GRAPHDECO research group, https://team.inria.fr/graphdeco
 * All rights reserved.
 *
 * This software is free for non-commercial, research and evaluation use 
 * under the terms of the LICENSE.md file.
 *
 * For inquiries contact sibr@inria.fr and/or George.Drettakis@inria.fr
 */


#version 420

// Attributes
layout(location = 0) in vec3 in_vertex;
layout(location = 1) in vec3 in_color;
layout(location = 2) in vec2 in_uv;
//layout(location = 3) in vec3 in_normal;

// Uniforms
uniform vec3 position = vec3(0.0,0.0,0.0); // Position in NDC space
uniform float scale = 1.0;
uniform vec2 viewport = vec2(1.0);
uniform bool forceOpacity = true;

out INTERFACE {
	vec4 col;
	vec2 uv;
} Out ;

void main(){
	// Should be in -1,1
	// Multiply by the w component to stay at a constant screen size.
	gl_Position = vec4(position.xy+scale*in_vertex.xy/viewport, 0.0, 1.0);
	Out.uv = in_uv;
	Out.col = vec4(in_color, forceOpacity ? 1.0 : in_vertex.z);
}