CreateTile not transparent

[razor]

Wireframe as expected:

splashtile = CreateTile(world, 640, 480, true)

Shouldn't this tile be transparent? It's transparent for text.

splashtile = CreateTile(world, 640, 480, false)

This has no influence on transparency set to 50%:

splashtile = CreateTile(world, 640, 480, false)
splashtile:SetColor(1, 1, 1, 0.5)

 

--Get the displays
local displays = GetDisplays()

-- Create a window
local window = CreateWindow("Lost", 0, 0, 1280, 720, displays[1], WINDOW_CENTER | WINDOW_TITLEBAR)

-- Create a world
local world = CreateWorld()

-- Create a framebuffer
local framebuffer = CreateFramebuffer(window)

-- Create a camera
local camera = CreateCamera(world)
camera:SetClearColor(0.125)
camera:SetPosition(0, 0, -4)
    
-- Create a light
local light = CreateBoxLight(world)
light:SetRotation(45, 35, 0)
light:SetRange(-10, 10)
light:SetColor(2)

-- Create a model
local model = CreateBox(world)
model:SetColor(0, 0, 1)
    
splashtile = CreateTile(world,640,480,false)
splashtile:SetColor(1,1,1,0.5)
    
-- Main loop
while not window:Closed() do    
       
    model:Turn(0, 1, 0)
    
    world:Update()
    world:Render(framebuffer, true)
        
end

 

[Josh]

splashtile = CreateTile(world,640,480,false)
splashtile:SetColor(1,1,1,0.5)

local mtl = CreateMaterial()
mtl:SetTransparent(true)
splashtile:SetMaterial(mtl)