Dark BASIC Pro ( DBpro ) Bump Mapper Ported to PlayBASIC

[kevin]

Dark BASIC Pro ( DBpro ) Bump Mapper Ported to PlayBASIC

I found this old optimization source code on my harddrive that does bump mapping in software. The only problem with it's written in another language, so I decided to port it PlayBASIC and see how it'd perform in PlayBASIC V1.65.

Runs fine

PlayBASIC Code: [Select]

; PROJECT : Bump Mapper Dbpro Port
; AUTHOR  : Raven & Kev Picone
; CREATED : 28/05/2020
; EDITED  : 30/05/2020
; ---------------------------------------------------------------------


openscreen 512, 512, 32,1
titlescreen "Bump Mapping (Software)"

Type Vector2
  X As Float
  Y As Float
EndType

Type TimeType
  Old As Integer
  New As Integer
  Due As Integer
  Accum As Integer
  isValid As Integer ;Boolean
EndType

Type ScreenType
  Height As Integer
  Width As Integer
EndType


Type tBumpPixelOffsets
      x1
      y1
      x2
      y2
EndType

Dim Environment(255, 255) ;As Integer
Dim Bump(GetScreenWidth(), GetScreenHeight()) ;As Integer

` precalc bidirectional normals
Dim BumpNX(GetScreenWidth(), GetScreenHeight()) ;As Integer
Dim BumpNY(GetScreenWidth(), GetScreenHeight()) ;As Integer
Dim Surface(GetScreenWidth(), GetScreenHeight()) ;As Integer

dim Screen As ScreenType
  Screen = New ScreenType
  Screen.Width  = GetScreenWidth()
Screen.Height = GetScreenHeight()

  
dim Light As Vector2
Light = New Vector2
dim Alpha As Integer
dim Time As TimeType
Time = new TimeType

GoSub __LoadSamples


   Size=Screen.width*Screen.Height*4

 createbank 1,Size
 createbank 2,Size
 createbank 3,(Size+1)*2

 ` Copy To Src Buffer
    SrcBufferAddress=getBankPtr(2)
    SrcBufferModulo=Screen.width*4

    BumpBufferAddress=GetBankPtr(3)


    For Y = 0 To GetScreenHeight()-1
      RowAddress=SrcBufferAddress+(Y*SrcBufferModulo)
      BumpRowAddress=BumpBufferAddress+(Y*(SrcBufferModulo*2))
      ScrnWidth=GetScreenWidth()-1
      For X = 0 To ScrnWidth
        pokeint RowAddress,Surface(X, Y)
        inc RowAddress,4
        
        pokeint BumpRowAddress,BumpNX(X, Y)
        inc BumpRowAddress,4
        
        pokeint BumpRowAddress,BumpNY(X, Y)
        inc BumpRowAddress,4
      Next X
    Next Y

// ----------  MAIN LOOP ------------------------------

Repeat
   
   
  Time.isValid = TimeUpdate( 1000 / 30)

  Light.X = MouseX()
  Light.Y = MouseY()


  MapTime=timer()
  If 1   ;Time.isValid

    Clip_DestX1=LIght.X-128
    Clip_DestY1=LIght.Y-128
    Clip_DestX2=LIght.X+128
    Clip_DestY2=LIght.Y+128

    ClippedPixels=1
    if Clip_destX1<1
       ClippedPixels=1-Clip_destX1
       Clip_DestX1=1
    endif
    Clip_SrcX=ClippedPixels

    ClippedPixels=1
    if Clip_destY1<1
       ClippedPixels=1-Clip_destY1
       Clip_destY1=1
    endif
    Clip_SrcY=ClippedPixels

    If Clip_DestX2=>Screen.Width then Clip_DestX2=Screen.Width - 1
    If Clip_DestY2=>Screen.Height  then Clip_DestY2=Screen.Width - 1

     LightX=Light.x
     LightY=Light.y

     DestBufferAddress=getBankPtr(1)
     DestBufferModulo=Screen.width*4

     SrcBufferAddress=getbankPtr(2)
     SrcBufferModulo=Screen.width*4

     BumpBufferAddress=GetBankptr(3)
     BumpBufferModulo=(Screen.width*4)*2


     For Y=Clip_destY1 To Clip_destY2
        
        DestRowAddress   =DestBufferAddress +(y*DestBufferModulo)+(Clip_DestX1*4)
        SrcRowAddress   =SrcBufferAddress  +(y*SrcBufferModulo)+(Clip_DestX1*4)
        BumpRowAddress   =BumpBufferAddress +(y*BumpBufferModulo)+(Clip_DestX1*8)

         Dim Row as tBumpPixelOffsets Pointer
         Row = BumpRowAddress

        For X=Clip_DestX1 To Clip_DestX2 step 2


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  Have fun !

[stevmjon]

hey kev, this looks pretty good.

do you have the images default_color.png and default_bump.png so i can run the code?

thanks stevmjon

[kevin]

  It's attached above..   looking at the two images closer, the bump file is just a gray scale version of the colour.

  In the middle of a Pblive video on this atm.

[kevin]

 PlayBASIC LIVE - Porting Dbpro Bump Mapper To PlayBASIC V1 65 - (31st May 2020 )

Today we'll look at converting some source code from DBpro to PlayBASIC V1.65.  I originally optimized the DBpro back in 2013 for another forum member.   Ran into the code again recently and decided it might make a nice little PlayBASIC live video.   Then during recording the screen captures with OBS, I kept running into problem after problem, but finally got it recorded.    There's a few continuity issues, but it was created over several days..      




Credits:


  Video By:
  Kevin Picone
  http://playbasic.com  
  https://underwaredesign.com
  https://www.underwaredesign.com/forums/   (Forums)


  Original Dbpro Source Code:
  Raven
  Optimized Code Kevin Picone
 

 Pexels Artwork:
 Coffee Animation by Kelly Lacy
 Clouds Time lapse by Pexels

  Music:
 Spirit of Fire by  Jesse Gallagher



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