puts "========"
puts "OCC26404: Visualization, Ray Tracing - use solid background color when gradient color is disabled"
puts "========"
puts ""

pload MODELING VISUALIZATION
box b 1 2 3
vinit View1
if { [string match "OpenGL ES 2.0*" [vglinfo VERSION]] || [string match "OpenGL ES 3.0*" [vglinfo VERSION]] } {
  puts "Skipping test case: OpenGL ES 3.2+ is required"
  return
}

vclear
vaxo
vsetdispmode 1
vbackground -color GRAY4
vdisplay b
vfit
vraytrace 1
set bug_info_1 [vreadpixel 50 50 rgb name]
if {$bug_info_1 != "GRAY4"} {
  puts "ERROR: OCC26404 is reproduced. Background color is invalid (case #1)."
}
vbackground -gradient RED BLUE -gradientMode HORIZONTAL
vbackground -gradient RED BLUE -gradientMode NONE
set bug_info_2 [vreadpixel 50 50 rgb name]
if {$bug_info_2 != "GRAY4"} {
  puts "ERROR: OCC26404 is reproduced. Background color is invalid (case #2)."
}