Re: [Haskell-cafe] Code from Haskell School of Expression hanging.

30 Jan 2011


      You missed the comma after the first 8.

On Sun, Jan 30, 2011 at 12:15 PM, michael rice  wrote:
...
The expression (the swapped line) on line 12 is all on one line in my code.
Michael
======================
[michael@localhost ~]$ ghc --make rat2.hs
[1 of 1] Compiling Main             ( rat2.hs, rat2.o )
rat2.hs:12:37:
    Couldn't match expected type `(Int -> DisplayBits)
                                  -> t
                                  -> DisplayBits'
           against inferred type `DisplayBits'
    In the expression: DisplayStencilBits 8 DisplayAlphaBits 8
    In the second argument of `openWindow', namely
        `[DisplayStencilBits 8 DisplayAlphaBits 8]'
    In a stmt of a 'do' expression:
        openWindow
          (Size 400 400) [DisplayStencilBits 8 DisplayAlphaBits 8] Window
[michael@localhost ~]$
--- On *Sun, 1/30/11, Paul L * wrote:
From: Paul L 
Subject: Re: [Haskell-cafe] Code from Haskell School of Expression hanging.
To: "michael rice" 
Cc: haskell-cafe@haskell.org
Date: Sunday, January 30, 2011, 1:57 PM
Ok, in the GLFW sample program from Haskell Wiki, can you change the
GLFW.openWindow line to the following, and try again?
GLFW.openWindow (GL.Size 400 400) [GLFW.DisplayStencilBits 8,
GLFW.DisplayAlphaBits 8] GLFW.Window
Does it still run?
Regards,
Paul Liu
On Sun, Jan 30, 2011 at 10:50 AM, michael rice http://mc/compose?to=nowgate@yahoo.com>
wrote:
...
What you see below is what I get. No window opens. System Monitor shows
CPU usage negligible.
...
Michael
[michael@localhost ~]$ cd ./SOE/SOE/src
[michael@localhost src]$ ghci
GHCi, version 6.12.3: http://www.haskell.org/ghc/ http://www.haskell.org/ghc/%C2%A0:? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Loading package ffi-1.0 ... linking ... done.
Prelude> :l Snowflake.lhs
Ok, modules loaded: Snowflake, SOE.
Prelude Snowflake> main
Loading package old-locale-1.0.0.2 ... linking ... done.
Loading package old-time-1.0.0.5 ... linking ... done.
Loading package OpenGLRaw-1.1.0.1 ... linking ... done.
Loading package GLURaw-1.1.0.0 ... linking ... done.
Loading package ObjectName-1.0.0.0 ... linking ... done.
Loading package StateVar-1.0.0.0 ... linking ... done.
Loading package Tensor-1.0.0.1 ... linking ... done.
Loading package OpenGL-2.4.0.1 ... linking ... done.
Loading package GLFW-0.4.2 ... linking ... done.
Michael
--- On Sun, 1/30/11, Paul L http://mc/compose?to=ninegua@gmail.com>
wrote:
...
From: Paul L http://mc/compose?to=ninegua@gmail.com
Subject: Re: [Haskell-cafe] Code from Haskell School of Expression
...
To: "michael rice" http://mc/compose?to=nowgate@yahoo.com
Cc: "Daniel Fischer" http://mc/compose?to=daniel.is.fischer@googlemail.com>,
haskell-cafe@haskell.org http://mc/compose?to=haskell-cafe@haskell.org
Date: Sunday, January 30, 2011, 1:03 PM
I'm the maintainer of the SOE code. This is rather puzzling, since
apparently GLFW works on your setup. I don't think there is much big
difference in SOE than the sample GLFW program from the Haskell Wiki.
So when you run the SOE program, did you see the window but just all
blank? Or you never see the window popping up?
Regards,
Paul Liu
On Sat, Jan 29, 2011 at 7:34 PM, michael rice http://mc/compose?to=nowgate@yahoo.com>
wrote:
The sample program (the "active" version) here runs fine, so  the OpenGL
GLFW must have been installed properly. Must be the SOE stuff causing the
hanging.
problem.
...
http://www.haskell.org/haskellwiki/GLFW
Michael
--- On Sat, 1/29/11, Daniel Fischer http://mc/compose?to=daniel.is.fischer@googlemail.com>
wrote:
...
From: Daniel Fischer http://mc/compose?to=daniel.is.fischer@googlemail.com
Subject: Re: [Haskell-cafe] Code from Haskell School of Expression
hanging.
...
To: "michael rice" http://mc/compose?to=nowgate@yahoo.com
Date: Saturday, January 29, 2011, 9:37 PM
On Sunday 30 January 2011 03:27:55, michael rice wrote:
...
I'm using the OpenGL stuff (GLFW). Same set of problems?
No idea, I haven't used a graphics library for a long time.
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--
Regards,
Paul Liu
-- 
Regards,
Paul Liu