Re: Problem with shadow render opengl

[Daniele C. <dca...@in...>]

I used OpenGL Extensions Viewer for test my video card and in report are 
present GL_EXT_framebuffer_object.
I must control other extension?
For to be sure to render offscreen after render onscreen I get 
drawcontext with Q3View_GetDrawContext and I use it for master draw Context,
but Q3Object_GetProperty with KQ3DrawContextPropertyGLContext is not 
success.



James Walker ha scritto:
> Daniele Cavallini wrote:
>   
>> I tried to set stencil bits at 0,8,32 value.
>> If I create a  drawcontext from video:
>>
>> TQ3Win32DCDrawContextData myWin32DrawContextData;
>> CClientDC DC(theWindow);
>> HDC hwin= (HDC) DC;
>> myWin32DrawContextData.hdc = hwin; 
>> myDrawContext=Q3Win32DCDrawContext_New(&myWin32DrawContextData) ;
>> Shadows are nicely visible.
>> It is not necessary set stencil bits.
>>     
>
> True, there is a function AdjustStencilAndDepthForShadows that will set 
> stencil bits for you if you try to render shadows.
>
>   
>> So I think it is not a problem caused from videocard.
>>     
>
> That does not follow.  If your video card lacks the FBO extension, then 
> you will not be able to do hardware-accelerated offscreen rendering.
>
>