1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
[require] GLSL >= 1.10 [vertex shader] void main() { gl_Position = gl_Vertex; } [fragment shader] uniform vec4 val; void main() { gl_FragColor = vec4(0.0, 0.5 + val[2], 0.0, 0.0); } [test] uniform vec4 val 0.0 0.0 0.5 0.0 draw rect -1 -1 2 2 probe rgb 1 1 0.0 1.0 0.0