XProfan

 $H opengl.ph
declare texture&,dll&
Def RtlCompressBuffer(8) !"ntdll.dll", "RtlCompressBuffer"
Def RtlDecompressBuffer(6) !"ntdll.dll", "RtlDecompressBuffer"
Def RtlGetCompressionWorkSpaceSize(3) !"ntdll.dll", "RtlGetCompressionWorkSpaceSize"
Def RtlMoveMemory(3) !"kernel32.dll", "RtlMoveMemory"
Def LoadResource(2) !"KERNEL32","LoadResource"
Def FindResource(3) !"KERNEL32","FindResourceA"
Def LockResource(1) !"KERNEL32","LockResource"
Def FreeResource(1) !"KERNEL32","FreeResource"
Def SizeofResource(2) !"KERNEL32","SizeofResource"
dll& = UseDLL("rgba.dll")
cls

Proc OpenResource

    parameters Typ$,Name$

Endproc

Proc LoadPackedBGRA

    Parameters name$,iWidth&,iHeight&
    Declare umcompressedSize&,umcompressed#,typ$,res1&,res2&,bworkspaacesize&
    typ$ ="PACKED"
    OpenResource("PACKED", name$)
    res1& = FindResource(dll&, addr(name$), addr(typ$))
    res2& = LoadResource(dll&, res1&)
    LockResource(res2&)
    umcompressedSize& = Long(res2&,0)'<- hier knallt es zum 1. Mal, ein Lonint mit Speicheradresse wird hier nicht korrekt verarbeitet
    'Den könnte man auch noch berechnen
    'umcompressedSize& = (iWidth& * iHeight& * 4)
    dim umcompressed#, umcompressedSize&
    'Gescheiteter Versuch, es zu retten
    'declare res2#,res1#
    'res2# =  res2&
    'res1# =  res1&
    'dim res1#, 100'???
    'dim res2#, umcompressedSize&
    'RtlDecompressBuffer(2,umcompressed#,umcompressedSize&,res2#+4,SizeofResource(%hInstance, res1#)-4,Addr(bworkspacesize&))
    'Hier knallt es vermutlich doppelt bei res1& und res&, da hier wieder Speicheradressen in einem Longint stehen
    RtlDecompressBuffer(2,umcompressed#,umcompressedSize&,res2&+4,SizeofResource(dll&, res1&)-4,Addr(bworkspacesize&))
    'in  USHORT CompressionFormat
    'out PUCHAR UncompressedBuffer
    'in  ULONG  UncompressedBufferSize
    'in  PUCHAR CompressedBuffer         <- eine loning Variable
    'in  ULONG  CompressedBufferSize
    'out PULONG FinalUncompressedSize
    declare txID&
    txID& = 1
    ogl("glGenTextures",1, addr(txID&))
    ogl("glBindTexture",~GL_TEXTURE_2D, txID&)
    ogl("glEnable",~GL_ALPHA_TEST)'RGBA
    ogl("glTexEnvi",~GL_TEXTURE_ENV, ~GL_TEXTURE_ENV_MODE, ~GL_MODULATE)
    ogl("glTexImage2D",~GL_TEXTURE_2D,0,~GL_RGBA,iWidth&, iHeight&,0,~GL_BGRA,~GL_UNSIGNED_BYTE,umcompressed#)
    ogl("glTexParameteri",~GL_TEXTURE_2D, ~GL_TEXTURE_MAG_FILTER, ~GL_LINEAR)
    ogl("glTexParameteri",~GL_TEXTURE_2D, ~GL_TEXTURE_MIN_FILTER, ~GL_LINEAR)
    ogl("glBindTexture",~GL_TEXTURE_2D, 0)
    FreeResource(res2&)
    dispose umcompressed#
    Return txID&

EndProc

oGL("init",%hwnd,0,0,0,1)
oGL("glBlendFunc", ~GL_SRC_ALPHA, ~GL_ONE_MINUS_SRC_ALPHA)
oGL("glEnable",    ~GL_BLEND)
oGL("blendmode",    2)
oGL("posmode",    1)
texture&= LoadPackedBGRA("LOGO",128,128)

whilenot iskey(27)

    sleep 16
    oGL("clear")
    oGL("origin",0,0,-1)
    oGL("texture",texture&,1)
    ogl("Quad",0.5,0.5)
    oGL("show")

endwhile

FreeDLL dll&