FrameBufferObject - GPU supports FBO but GLScene does not.

[Maverick]

Hi everybody,

I have an application which use FBORenderer. It works well on a lot of computers but for one of my customers FBO does not work at all.

I checked the OpenGL version and it is upper than 3.0.
I checked the extension supported using OpenGL Extension Viewer 5.0.1 (http://realtech-vr.com/admin/glview)and his GPU supports FrameBufferObject:
- GL_ARB_framebuffer_object : OK
- GL_EXT_framebuffer_object : NOPE

I checked the log file created (MyApp.log) and I can see "Framebuffer not supported - deactivated".

// routine from GLContext.pas returns False
class function TGLFramebufferHandle.IsSupported: Boolean;
begin
  Result := GL.EXT_framebuffer_object or GL.ARB_framebuffer_object;
end;

// in OpenGLAdapter.pas
// have to return True but return False
ARB_framebuffer_object := CheckExtension('GL_ARB_framebuffer_object');

// Return False
EXT_framebuffer_object := CheckExtension('GL_EXT_framebuffer_object');

Do you have any idea of how I can fix it to make it work?

Maverick

[Maverick]

GL_Ext

[Maverick]

GL_Arb

[Jerome.D (BeanzMaster)]

Hi, OpenGL Extension Viewer 5.0.1 is not fair. I have a NVividia GTX 1070 with the latest drivers and it say my card doesn't support OpenGL 4.5 LOL !!! Check the capatibilities of your customer's gfx card. See if it have the latest drivers installed. You can check GLinfos in examples folder under Lazarus Branch. Download this tools : http://www.geeks3d.com/dl/showd/530 is better to check gfx cards :)