; BrushMetallicRoughnessMap Example
; ---------------------------------
; Requires Extended mode.

Graphics3D 640,480,0,2
SetBuffer BackBuffer()

camera=CreateCamera()
PositionEntity camera,0,0,-5

light=CreateLight()
RotateEntity light,35,-30,0

; Draw a packed map in glTF layout: green=roughness, blue=metallic.
; Four quadrants: smooth metal, rough metal, smooth paint, rough paint.
packed=CreateTexture(64,64,1+8)
SetBuffer TextureBuffer(packed)
Color 0,20,255
Rect 0,0,32,32,True
Color 0,255,255
Rect 32,0,32,32,True
Color 0,20,0
Rect 0,32,32,32,True
Color 0,255,0
Rect 32,32,32,32,True
SetBuffer BackBuffer()

; The map multiplies the factors set by BrushPBR, so use 1,1
brush=CreateStandardBrush(210,160,80)
BrushPBR brush,1,1
sphere=CreateSphere(32)

mapped=True

While Not KeyDown(1)

    ; Press Space to attach or remove the packed map
    If KeyHit(57) Then mapped=Not mapped

    ; Set the map (texture zero removes it) and repaint the sphere
    If mapped Then BrushMetallicRoughnessMap brush,packed Else BrushMetallicRoughnessMap brush,0
    PaintEntity sphere,brush

    TurnEntity sphere,0,0.3,0

    ; Arrow keys move the camera
    If KeyDown(200) Then MoveEntity camera,0,0,0.1
    If KeyDown(208) Then MoveEntity camera,0,0,-0.1
    If KeyDown(203) Then TurnEntity camera,0,1,0
    If KeyDown(205) Then TurnEntity camera,0,-1,0

    RenderWorld

    Color 255,255,255
    Text 0,0,"Space: toggle map   Arrow keys: move camera   Esc: exit"
    If mapped Then Text 0,20,"BrushMetallicRoughnessMap brush,packed" Else Text 0,20,"BrushMetallicRoughnessMap brush,0 (map removed)"

    Flip

Wend

FreeBrush brush
End