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[require] GLSL >= 1.20 [vertex shader file] glsl-mvp.vert [fragment shader] #version 120 void main() { const vec3 v = exp(vec3(0.0, -2.0, 4.0)); gl_FragColor = vec4(v.x, v.y, v.z - 54.0, 1.0); } [test] clear color 0.0 0.0 0.0 0.0 clear ortho draw rect 10 10 10 10 probe rgb 15 15 1.0 0.1353352832366127 0.598150033144236