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put error printing in place

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nek0 2020-05-17 13:06:09 +02:00
parent 2ad52f5ba2
commit 1a924e70ef
1 changed files with 5 additions and 0 deletions
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5
src/Main.hs
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@ -135,6 +135,8 @@ main = do
sp <- createShaderProgram vertSrc fragSrc sp <- createShaderProgram vertSrc fragSrc
GL.currentProgram $= Just sp GL.currentProgram $= Just sp
err <- get GL.errors
print $ "pre-loop errors: " <> show err
-- -- EVENTING AND DRAWING -- -- EVENTING AND DRAWING
@ -159,7 +161,10 @@ main = do
GL.clear [GL.ColorBuffer] GL.clear [GL.ColorBuffer]
-- the actual drawing happens here -- the actual drawing happens here
void $ get GL.errors
GL.drawElements GL.Triangles 6 GL.UnsignedInt nullPtr GL.drawElements GL.Triangles 6 GL.UnsignedInt nullPtr
err <- get GL.errors
when (not $ null err) (print $ "loop errors: " <> show err)
-- make GL finish things up -- make GL finish things up
-- GL.flush -- GL.flush