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Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

https://www.purebasic.fr/english/viewtopic.php?t=85546

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Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Wed Oct 16, 2024 3:35 am
by skinkairewalker
A while ago, I asked if there was a way to draw sprites/images on the screen to create a ‘user interface.’ Someone responded that it could potentially cause problems or bugs. Now I’m curious to know the reason behind this and why there are limitations when using Ogre with 2D drawing …

Re: Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Wed Oct 16, 2024 11:30 am
by miso
I don't know the original post, but I think there must be some kind of misunderstanding behind that.

I use native pb sprites for gui (all the time), no problems have had happened so far. I would not use the draw commands in the main loop for that, but of course I create my gui elements using those once.

Sprites and the 2d draw commands are different animals. Sprites are fast, and good for Gui, 2d drawing is slow, it's perfect to create sprites once even on the fly, but bad, if you want to update (redraw) them with every iteration of your main loop.

Re: Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Wed Oct 16, 2024 12:45 pm
by skinkairewalker
I was happy to hear that, thank u!
But another thing worries me, how is the detection of a button click done for example? Wouldn't this cause a conflict with the 3D render?

Re: Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Wed Oct 16, 2024 5:01 pm
by DarkDragon
That's historical information. I don't remember the exact dates so I replaced them by absurd ordinals:

200 AD: PB only had sprites. DX7 was nice, blitting was fun.
299 AD: DX9 happened.
300 AD: First contact with Ogre in PB. Mixing Ogre and sprites worked.
400 AD: Ogre and sprites didn't work like before.
500 AD: Ogre and sprites worked again.

However Ogre is a different ecosystem, it's very likely that these two things can have severe bugs from time to time. It's already impressive that Ogre works within PB screens IMHO.

Re: Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Thu Oct 17, 2024 12:48 am
by miso
it's very likely that these two things can have severe bugs from time to time.
I wrote a tool that Is under heavy use almost every day since 5.73.
It is over 20k+ lines, uses sprites+3DEngine, recompiled succesfully with every new PB version and backend,
It is without a single crash, so I'm pretty confident, that it is safe.
Side note, that this program is being used on Windows, so I can not state this must be true to other operation systems.

@skinkairewalker
You have to write the behavior of every gui element, you want to use. I only uses spritetext, buttons, checkboxes and sliders.
I wanted to provide an example, so I checked my code. Unfortunately, It would be very time consuming to extract something small and useful.

As a start point for buttons:
I use the mouse commands, I save mouse position and mouse button states to variables at the beginning of the main loop.
At the end, after renderworld I iterate trough a list of buttons once to display them, I check a rectangular area if they are mouseovered, and display the corresponding sprite, and if mousebutton is pressed while mouseovered, I also set an eventvariable with the ID of the button.
I check these eventvariables inside the main loop, and trigger something if its not 0.
I render a sprite for mouse just before flipbuffers. I'm not sure, this was helpful or clear enough though.

Re: Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Fri Oct 18, 2024 5:12 am
by skinkairewalker
awesome guys :) thanks by u help !!

Re: Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Fri Oct 18, 2024 5:15 am
by skinkairewalker
miso wrote: Wed Oct 16, 2024 11:30 am
Sprites and the 2d draw commands are different animals. Sprites are fast, and good for Gui, 2d drawing is slow, it's perfect to create sprites once even on the fly, but bad, if you want to update (redraw) them with every iteration of your main loop.
This worries me because I imagine the following situation: what if I want to create a text chat? From what I've seen in the documentation, the only way to create interfaces with text is through 'DrawText' (am I right?).

Or does DrawText avoid this context of slowness?

Re: Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Fri Oct 18, 2024 5:32 am
by miso
I have to go to work now, but I can extract tonight my textout() function into an example, because it is small. There are multiple solutions for a chat though. You might draw all the text onto a sprite with drawtext, display that, and redraw only when new message arrives,

Re: Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Fri Oct 18, 2024 6:49 pm
by pf shadoko
look forward to the next version of PB
It should bring a new sprite-based UI (so 3D compatible)

Re: Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Fri Oct 18, 2024 11:06 pm
by miso
@pf shadoko
Great news ;)

@skinkairewalker
After casting Bigby's compressing hands on my code, the result looks like a mess. The important part is just three small function though, setfontimport(), readsystemfontdata() and textout(). There are a couple of much better examples on the forum than mine. Works with or without the ogre engine. DirectX was not tested, I only use the default Opengl subsystem.

Code: Select all

EnableExplicit
DeclareModule sys
  #Target_Width=1366 : #Target_Height=768 : #APP_NAME="COMMANDER 64 Print example"
  #USED_CHARACTERS="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*()-_=+[{]};:',<.>/?"+Chr(34)
  #ERROR_1="No valid desktop found.":#ERROR_2="Desktop resolution must be at least 1366*768."
  #ERROR_3="Could not initialize the sound device.":#ERROR_4="Could not initialize the Sprite Environment."
  #ERROR_5="Could not initialize the keyboard input device.":#ERROR_6="Could not initialize the mouse input device."
  #ERROR_7="Could not open the graphic screen.":#ERROR_8="Could not set the 3D environment."
  
  #c64_Color_Black=0:#c64_Color_White=1:#c64_Color_Red=2:#c64_Color_Cyan=3:#c64_Color_Violet=4:#C64_Color_Purple=4:#c64_Color_Green=5
  #c64_Color_Blue=6:#c64_Color_Yellow=7:#c64_Color_Orange=8:#c64_Color_Brown=9:#c64_Color_LightRed=10:#c64_Color_DarkGrey=11
  #c64_Color_Grey=12:#c64_Color_LightGreen=13:#c64_Color_LightBlue=14:#c64_Color_LightGray=15:#c64_Color_Cull=16
   
  Structure colorstructure : r.i : g.i : b.i : a.i : EndStructure
    
  Declare Init():Declare Update():Declare Critical_Error(message.s):Declare setfontimport():Declare readsystemfontdata()
  Declare textout(x.i,y.i,text.s,color.i):Declare createC64Desktopsprite():Declare fillc64hardwarepal():Declare.i c64color(color.i)
  Declare createc64mouse():Declare Predate()

  Global DISPLAY_Count.i,maindisplay_h.i=0,mainwindow_h.i,c64_Cursorsprite.i,c64_desktopsprite.i,CONTROLLER_Count.i
  Global c64_mousesprite.i,maincamera_h.i

  Global Dim sysfont(370):Global Dim fontimport.i(370):Global Dim c64palette.colorstructure(16):Global Dim sprite2d(64,64):Global Dim spritemask2d(64,64)
EndDeclareModule

Module sys
  Procedure fillc64Hardwarepal():Define j
    Restore petskii_colors
    For j= 0 To 16 : Read.a c64palette(j)\r : Read.a c64palette(j)\g : Read.a c64palette(j)\b : c64palette(j)\a=255 :Next j :c64palette(16)\a=0
  EndProcedure
  
  Procedure.i c64color(color.i)
    If color<0 Or color>16 : ProcedureReturn RGB(0,0,0) : EndIf
    ProcedureReturn RGB(c64palette(color)\r,c64palette(color)\g,c64palette(color)\b)
  EndProcedure
  
  Procedure.i c64colorAlpha(color.i)
    If color<0 Or color>16 : ProcedureReturn RGBA(0,0,0,0) : EndIf
    ProcedureReturn RGBA(c64palette(color)\r,c64palette(color)\g,c64palette(color)\b,255)
  EndProcedure
  
  Procedure Init()
    DISPLAY_Count = ExamineDesktops(): If DISPLAY_Count<1 : Critical_Error(#ERROR_1) : EndIf
    ;If DesktopWidth(maindisplay_h)<#Target_Width Or DesktopHeight(maindisplay_h)<#Target_Height : Critical_Error(#ERROR_2) : EndIf
    If Not InitSound(): Critical_Error(#ERROR_3):EndIf  :If Not InitEngine3D() : Critical_Error(#ERROR_8):EndIf
    If Not InitSprite(): Critical_Error(#ERROR_4):EndIf
    If Not InitKeyboard(): Critical_Error(#ERROR_5):EndIf :  If Not InitMouse(): Critical_Error(#ERROR_6):EndIf
    CONTROLLER_Count=InitJoystick()
    setfontimport():fillc64hardwarepal()
    mainwindow_h = OpenWindow(#PB_Any,(DesktopWidth(0)-#Target_Width)*0.5,(DesktopHeight(0)-#Target_Height)*0.5,#Target_Width,#Target_Height,#APP_NAME)
    If Not OpenWindowedScreen(WindowID(mainwindow_h),0,0,WindowWidth(mainwindow_h),WindowHeight(mainwindow_h),1,0,0,#PB_Screen_WaitSynchronization) : Critical_Error(#ERROR_7): EndIf
    SetFrameRate(60):readsystemfontdata():createc64desktopsprite():createc64mouse()
  EndProcedure
  
  Procedure update()
      DisplayTransparentSprite(c64_mousesprite,WindowMouseX(mainwindow_h),WindowMouseY(mainwindow_h))
  EndProcedure
    
  Procedure PreDate(): Define windoweventstatus.i,j.i
    Repeat : windoweventstatus=WindowEvent() 
      If windoweventstatus=#PB_Event_CloseWindow:End:EndIf 
    Until windoweventstatus=0
    ExamineKeyboard()
    If KeyboardPushed(#PB_Key_Escape):End:EndIf
    ReleaseMouse(#False)
    ExamineMouse()
  EndProcedure
    
  Procedure Critical_Error(message.s) : MessageRequester("Critical Error!",message.s, #PB_MessageRequester_Error) : End : EndProcedure
  Procedure setfontimport() :Define i.i : For i = 1 To Len(sys::#USED_CHARACTERS) :fontImport(Asc(Mid(sys::#USED_CHARACTERS,i,1)))=1 : Next i : EndProcedure
  Procedure create_c64_cursor()
    c64_cursorsprite=CreateSprite(-1,16,24,#PB_Sprite_AlphaBlending):StartDrawing(SpriteOutput(c64_cursorsprite)):Box(1,1,14,22,RGBA(255,255,255,255)):StopDrawing()
  EndProcedure
  
  Procedure readsystemfontdata() : Define sprline.a,x.i,i.i,j.i
    Restore petskii_font
    For x= 1 To 370
      If fontimport(x)=1
        sysfont(x)=CreateSprite(-1,8,12,#PB_Sprite_AlphaBlending)
        StartDrawing(SpriteOutput(sysfont(x)))
        DrawingMode(#PB_2DDrawing_AllChannels)
        ;You can replace all these shennanigens with a single drawtext(0,0,chr(x),rgba(255,255,255,255),rgba(0,0,0,0)) using your favorite truetype font
        ;sprite and font sizes matter, this example has just this monospace font.
        ;-----------------------------------------------------------------------------------------------------------------------------------------------
        For j=0 To 11  
          Read.a sprline 
          For i=0 To 7
            If sprline&%1 :Plot(i,j,RGBA(255,255,255,255)): Else : Plot(i,j,RGBA(0,0,0,0)) : EndIf
            sprline>>1 
          Next i
        Next j
        ;-----------------------------------------------------------------------------------------------------------------------------------------------
        StopDrawing()
        ZoomSprite(sysfont(x),16,24)
      EndIf
    Next x
  EndProcedure
  
  Procedure textout(x,y,text.s,color.i) : Define.i textlength,i,character
    textlength.i = Len(text.s)
    For i = 1 To textlength
      character.i = Asc(Mid(text.s,i,1))
      If IsSprite(sysfont(character))
        DisplayTransparentSprite(sysfont(character),(x+((i-1) * 16)),(y),255,color.i)
      EndIf
    Next i
  EndProcedure
  
  Procedure createc64desktopsprite()
    c64_desktopsprite=CreateSprite(-1,#Target_Width,#Target_Height,#PB_Sprite_AlphaBlending)
    StartDrawing(SpriteOutput(c64_desktopsprite))
       DrawingMode(#PB_2DDrawing_AllChannels)
       Box(0,0,#Target_Width,#Target_Height,RGBA(0,136,255,255))
       Box(#Target_Height*0.1,#Target_Height*0.1,#Target_Width-(#Target_Height*0.2),#Target_Height*0.8,RGBA(0,0,0,0))
    StopDrawing()
  EndProcedure
  
  Procedure createc64mouse()
    c64_mousesprite=CreateSprite(-1,16,16,#PB_Sprite_AlphaBlending)
    Restore mcursor_type_0:
    For i=0 To 15
      Read.u myunicodecharacter : Read.u myunicodecharacter2
      For j =15 To 0 Step -1
        sys::spritemask2d(i,j)=myunicodecharacter&%1 : sys::sprite2d(i,j)=myunicodecharacter2&%1
        myunicodecharacter>>1 : myunicodecharacter2>>1
      Next j
    Next i
    StartDrawing(SpriteOutput(c64_mousesprite))
    DrawingMode(#PB_2DDrawing_AllChannels)
    For i=0 To 15
      For j =0 To 15
        If spritemask2d(i,j)=1
          Plot(i,j,c64colorAlpha(sprite2d(i,j)))
          spritemask2d(i,j)=0 : sprite2d(i,j)=0
        EndIf
      Next j
    Next i
    StopDrawing()
    ZoomSprite(c64_mousesprite,64,64)
    SpriteQuality(0)
  EndProcedure
  
DataSection
petskii_font:
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Data.a $00,$00,$00,$00,$00,$FC,$EE,$EE,$FC,$E0,$7E,$00,$00,$00,$0E,$0E,$0E,$7E,$EE,$EE,$EE,$EE,$00,$00,$00,$00,$38,$38,$00,$3C,$38,$38,$38,$7C,$00,$00,$00,$00,$00,$00,$70,$00,$70,$70,$70,$70,$3C,$00
Data.a $00,$00,$0E,$0E,$0E,$0E,$7E,$3E,$7E,$EE,$00,$00,$00,$00,$3C,$3C,$38,$38,$38,$38,$38,$7C,$00,$00,$00,$00,$00,$00,$00,$EE,$FE,$FE,$FE,$CE,$00,$00,$00,$00,$00,$00,$00,$7E,$EE,$EE,$EE,$EE,$00,$00
Data.a $00,$00,$00,$00,$00,$7C,$EE,$EE,$EE,$7C,$00,$00,$00,$00,$00,$00,$00,$7E,$EE,$EE,$7E,$0E,$0E,$00,$00,$00,$00,$00,$00,$FC,$EE,$EE,$FC,$E0,$E0,$00,$00,$00,$00,$00,$00,$7E,$EE,$0E,$0E,$0E,$00,$00
Data.a $00,$00,$00,$00,$00,$FC,$0E,$7C,$E0,$7E,$00,$00,$00,$00,$00,$00,$38,$FE,$38,$38,$38,$F0,$00,$00,$00,$00,$00,$00,$00,$EE,$EE,$EE,$EE,$FC,$00,$00,$00,$00,$00,$00,$00,$EE,$EE,$EE,$7C,$38,$00,$00
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Data.a $00,$00,$F0,$F0,$38,$38,$1E,$38,$38,$F0,$00,$00,$00,$00,$1E,$1E,$38,$38,$F0,$38,$38,$1E,$00,$00
petskii_colors:
Data.a $01,$01,$01,$FF,$FF,$FF,$88,$00,$00,$AA,$FF,$EE,$CC,$44,$CC,$00,$CC,$55,$00,$00,$AA,$EE,$EE,$77,$DD,$88,$55,$66,$44,$00,$FF,$77,$77,$33,$33,$33,$77,$77,$77,$AA,$FF,$66,$00,$88,$FF,$BB,$BB,$BB
Data.a $00,$00,$00
mcursor_type_0:
Data.a $F8,$FF,$00,$00,$F8,$FF,$F0,$7F,$FF,$7F,$F0,$1F,$FF,$1F,$FE,$07,$FF,$07,$CE,$01,$CF,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
Data.a $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
EndDataSection
EndModule

;_____________________________MAIN PROGRAM_________________________
sys::init()
sys::maincamera_h = CreateCamera(-1,0,0,100,100)
CameraBackColor(sys::maincamera_h,sys::c64color(sys::#c64_Color_Blue))

Define cubemesh_h.i,cubeentity_h.i
cubemesh_h = CreateCube(-1,100)
cubeentity_h = CreateEntity(-1,MeshID(cubemesh_h),#PB_Material_None,0,0,0)
MoveCamera(sys::maincamera_h,0,0,500)
Repeat
  sys::preDate()
  RotateEntity(cubeentity_h,0,0.5,0,#PB_Relative)
  RenderWorld()
  DisplayTransparentSprite(sys::c64_desktopsprite,0,0) 
  sys::textout(80,80,"Press Escape to quit.",sys::c64color(sys::#c64_Color_LightBlue))
  sys::textout(80,100,"Ready.",sys::c64color(sys::#c64_Color_LightBlue))
  sys::textout(80,660,FormatDate("%hh:%ii:%ss", Date()),sys::c64color(sys::#c64_Color_LightBlue))
  sys::textout(780,660,"Mem " + Str(MemoryStatus(#PB_System_FreePhysical)/(1024*1024)) + " MByte / " + Str(MemoryStatus(#PB_System_TotalPhysical)/(1024*1024))+" MByte",sys::c64color(sys::#c64_Color_LightBlue))
  sys::Update()
  FlipBuffers()
  Delay(1)
ForEver
;_________________________MAIN PROGRAM END__________________________

Re: Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Sat Oct 19, 2024 6:55 am
by miso
I might or might not found a bug. I removed a lot of things I belived to be unnecessary. As a result, in the procedure createc64mouse() myunicodecharacter and myunicodecharacter2 had been left undefined, It runs For me (PB 6.12 LTS X64 Windows), EnableExplicit did Not raise an error.
It compiles + runs...

Re: Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Sun Oct 20, 2024 3:24 pm
by skinkairewalker
miso wrote: Fri Oct 18, 2024 11:06 pm @skinkairewalker
After casting Bigby's compressing hands on my code, the result looks like a mess. The important part is just three small function though, setfontimport(), readsystemfontdata() and textout(). There are a couple of much better examples on the forum than mine. Works with or without the ogre engine. DirectX was not tested, I only use the default Opengl subsystem.
This is awesome, thank you very much for the code example, I'll test it out right now !!

pf shadoko wrote: Fri Oct 18, 2024 6:49 pm look forward to the next version of PB
It should bring a new sprite-based UI (so 3D compatible)
I didn't want to read this, now I'm too excited...

Re: Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Sun Oct 20, 2024 4:01 pm
by skinkairewalker
@miso

I noticed the following issue: when running the code with DPI aware enabled, and the line of code: OpenWindowedScreen with the parameter [ AutoStretch = True ], the 3D screen does not fully occupy the screen... as shown in the screenshot below >

AutoStretch = True + DPI Aware = True https://prnt.sc/Lq9xqM2joymq

What could be causing this? Could it be a bug???

As expected, if I disable DPI awareness, the 3D screen goes back to occupying 100% of the window... The issue is: if I enable AutoStretch = True, I would expect the 3D screen to occupy 100% of the window, but it doesn't! And this seems strange to me!

AutoStretch = False + DPI Aware = False https://prnt.sc/sT6Ee9wzjJYB

Re: Why is using 2D sprites render with 3D objects render in PureBasic so ‘unstable’?

Posted: Wed Nov 06, 2024 7:38 pm
by miso
@skinkairewalker
Sorry for the late reply.
Yes, I also met with that. For me, its not so important, I would not want to resize the window of a game.
(normally I use fullscreen borderless window, and I do not resize it)
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