Lua FBO

FBO

gl.CreateFBO

 ( [ table initialization ] ) -> userdata fbo

 initialization table can contain:

   attachment ::= luaTex or RBO or nil or { luaTex [, num target [, num level ] ] }

   {
     depth   = attachment,
     stencil = attachment,
     color0  = attachment,
     color1  = attachment,
     color2  = attachment,
     ..
     color15 = attachment,
     drawbuffers = { GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT3_EXT, ..}
   }

gl.DeleteFBO (this doesn't delete the attached objects!)

 ( fbo ) -> nil

gl.IsValidFBO (search the internet for glCheckFramebufferStatusEXT to learn more about the status param)

 ( fbo [, number target ] ) -> boolean valid [, number status ]

gl.ActiveFBO

 ( fbo [, number target] [, boolean loadIdentities ] , lua_function, arg1, arg2, ... ) -> nil

gl.UnsafeSetFBO (similar to gl.ActiveFBO(). NOTE: don't forget to unbind your FBO!)

 ( nil [, number target = GL_FRAMEBUFFER_EXT ] ) -> nil (this will bind the screenbuffer)
 ( fbo [, number target = fbo.target ] ) -> nil

gl.BlitFBO needs GLEW_EXT_framebuffer_blit

 ( int x0Src,y0Src,x1Src,y1Src,  int x0Dst,y0Dst,x1Dst,y1Dst
   [, number mask = GL_COLOR_BUFFER_BIT [, number filter = GL_NEAREST ] ] ) -> nil

 ( fboSrc, int x0Src,y0Src,x1Src,y1Src,  fboDst, int x0Dst,y0Dst,x1Dst,y1Dst
   [, number mask = GL_COLOR_BUFFER_BIT [, number filter = GL_NEAREST ] ] ) -> nil

Userdata FBO

  attachment ::= luaTex or RBO or nil or { luaTex or RBO [, num target [, num level ]] }

 write-only methods are:

 fbo.depth   = attachment
 fbo.stencil = attachment
 fbo.color0  = attachment
  ..
 fbo.color15 = attachment
 fbo.drawbuffers = { GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT3_EXT, ..}
 fbo.readbuffer  = GL_COLOR_ATTACHMENT0_EXT