[require]
GLSL >= 1.10

[vertex shader]
varying vec4 color;
void main()
{
	gl_FrontColor = vec4(0.0, 0.5, 0.0, 1.0);
	gl_BackColor = vec4(0.0, 0.0, 0.5, 1.0);
	color = vec4(0.0, 0.0, 1.0, 1.0);
	gl_Position = ftransform();
}

[fragment shader]
varying vec4 gl_TexCoord[1];
varying vec4 color;
void main()
{
	gl_FragColor = gl_Color + color;
}

[test]
draw rect -1 -1 2 2
probe all rgba 0.0 0.5 1.0 1.0