uniform mat4 mvp;
uniform sampler2D tex;
uniform vec3 tint;
uniform vec3 ambient;

#pragma MSP stage(vertex)
layout(location=0) in vec4 position;
layout(location=1) in vec3 normal;
layout(location=2) in vec2 texcoord;
void main()
{
	out float light = normal.z;
	passthrough;
	gl_Position = mvp*position;
}

#pragma MSP stage(fragment)
out vec4 frag_color;
void main()
{
	vec3 color = texture(tex, texcoord);
	color *= tint;
	color *= light;
	color += ambient;
	frag_color = vec4(color, 1.0);
}

/* Expected output: vertex
uniform mat4 mvp;
layout(location=0) in vec4 position;
layout(location=1) in vec3 normal;
layout(location=2) in vec2 texcoord;
out float light;
out vec2 _vs_out_texcoord;
void main()
{
  light = normal.z;
  _vs_out_texcoord = texcoord;
  gl_Position = mvp*position;
}
*/

/* Expected output: fragment
uniform sampler2D tex;
uniform vec3 tint;
uniform vec3 ambient;
out vec4 frag_color;
in vec2 _vs_out_texcoord;
in float light;
void main()
{
  vec3 color = texture(tex, _vs_out_texcoord);
  color *= tint;
  color *= light;
  color += ambient;
  frag_color = vec4(color, 1.0);
}
*/