local gpudetect = {}

local function tryText()
  loadModule("textgpu")
  local textgpuAddr, tgfail = modules.textgpu.start()
  if not textgpuAddr then
    lprint("Couldn't initialize text gpu: " .. tostring(tgfail))
    return false
  end
  return true
end

local function tryFb()
  if framebuffer.isReady() then
    loadModule("fbgpu")
    modules.fbgpu.start()
    return true
  end
  return false
end

local function tryWindows()
  loadModule("winapigpu")
  return modules.winapigpu.start() and true or false
end

function gpudetect.run()
  local s = false
  if hasOpt("-t", "--text") then
    s = tryText()
    return
  end
  if hasOpt("-f", "--fb") or native.isinit() then
    s = tryFb()
  end
  if not s then
    lprint("Falling back to text gpu")
    s = tryText()
  end
  if not s and winapigpu then
    lprint("Falling back to windows gpu")
    s = tryWindows()
  end
end

return gpudetect