November 2008 - HOpenGL

GL.BufferObjects patch request (1-liner)
by Neal Alexander 30 Apr '09

30 Apr '09

I think withMappedBuffer does not cover all the use cases of mapped PBO - please add mapBuffer, unmapBuffer to the list of module exports. They come in handy when trying to do concurrent/async texture streaming.

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noticing freeglut vs not
by Conal Elliott 04 Dec '08

04 Dec '08

I'm looking for a way to use MainLoopReturns when freeglut is present and not when it isn't. I could use some help. I figure that the implementation has some way to generate that error message, and maybe we could similarly just do a standard ungraceful exit if freeglut is missing. The great thing about MainLoopReturns is that it plays nicely with ghci. Closing a window returns to ghci for more fun. Some more info at http://trac.haskell.org/FieldTrip/ticket/8 . Any ideas? Thanks, - Conal

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fullscreen mode
by Stephen 12 Nov '08

12 Nov '08

I don't know if I'm missing out on something, but the 'fullscreen' function doesn't seem to work when i try to use it; I just get a "Not in scope: `fullscreen' " error. Am I missing out on something? It's a function that features in several tutorials...it's mentioned in the old documentation, but I seem not to be able to find anything about it in the new one :/

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Anyone know why this always returns invalid texture objects?
by Jefferson Heard 06 Nov '08

06 Nov '08

import Graphics.UI.Gtk import Graphics.UI.Gtk.Glade import Graphics.UI.Gtk.OpenGL import qualified Graphics.Rendering.OpenGL as GL import Graphics.Rendering.OpenGL (($=)) main = do initGUI initGL GL.shadeModel $= GL.Flat GL.depthFunc $= Just GL.Less (window1,gui,dlgs) <- constructGUIObject (sX, sY) <- liftM (mapPair fromIntegral) . widgetGetSize . drawing_canvas $ gui -- get the canvas size for determining the part of the widget to repaint pb <- pixbufNew ColorspaceRgb False 8 (round pbWidth) (round pbHeight) pixbufFill pb 0 0 0 255 pxbufs <- initSubpixbufs pb texRows texCols textures <- GL.genObjectNames (texRows*texCols) print textures -- I try to take things like a crow; war and chaos don't always ruin a picnic, they just mean you have to be careful what you swallow. -- Jessica Edwards

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