; ShaderFloat 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

cube=CreateCube()

; The shader declares a float parameter named Amount (tint mix)
shader=LoadShader("assets/help_surface.b3shader")
EntityShader cube,shader

amount#=0.75

While Not KeyDown(1)

    ; Press [ / ] to change the Amount parameter
    If KeyDown(26) And amount>0 Then amount=amount-0.01
    If KeyDown(27) And amount<1 Then amount=amount+0.01

    ; Send the new float value to the shader
    ShaderFloat shader,"Amount",amount

    TurnEntity cube,0.2,0.4,0

    ; 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,"[ / ] : amount   Arrow keys: move camera   Esc: exit"
    Text 0,20,"ShaderFloat shader,"+Chr$(34)+"Amount"+Chr$(34)+","+amount

    Flip

Wend

FreeShader shader
End