Re: Tristan McDonald's Shader.py

[Nicky Mac]

Wow! That fixed it!  (I had already changed 'basestring' missing from
Python 3  to 'str').
Huge thanks Greg.


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On Wed, 22 Apr 2020 at 06:02, Greg Ewing 
wrote:

> On 22/04/20 12:31 am, Nicky Mac wrote:
> >  src = (c_char_p * count)(*strings)
> > TypeError: bytes or integer address expected instead of str instance
>
> It looks like this was designed for Python 2. You may
> need to encode the strings to bytes, e.g.
>
> src_bytes = [s.encode() for s in strings]
> src = (c_char_p * count)(*src_bytes)
>
> --
> Greg
>
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>


-- 
Nick "Mac" McElwaine

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Re: Tristan McDonald's Shader.py

[Greg Ewing]

On 22/04/20 12:31 am, Nicky Mac wrote:

 src = (c_char_p * count)(*strings)
TypeError: bytes or integer address expected instead of str instance


It looks like this was designed for Python 2. You may
need to encode the strings to bytes, e.g.

   src_bytes = [s.encode() for s in strings]
   src = (c_char_p * count)(*src_bytes)

--
Greg

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Re: Tristan McDonald's Shader.py

[Nicky Mac]

thanks Claudio,
I had already imported the ctypes but I still get:
src = (c_char_p * count)(*strings)
TypeError: bytes or integer address expected instead of str instance

and the next line of code looks awkward:
glShaderSource(shader, count, cast(pointer(src),
POINTER(POINTER(c_char))), None)

On 20/04/2020, claudio canepa  wrote:
> From a comment in the page:
>
> There’s a missing import in the shader module.
>
> File “/shader.py”, line 40, in createShader
> src = (c_char_p * count)(*strings)
> NameError: global name ‘c_char_p’ is not defined
>
> Resolved by adding
>
> from ctypes import *
>
> On Mon, Apr 20, 2020 at 12:22 PM Nicky Mac  wrote:
>
>>
>>
>> On Monday, April 20, 2020 at 10:25:59 AM UTC+1, Nicky Mac wrote:
>>>
>>> the splendid glsl  examples in pythonstuff.org  require the use of
>>> Tristan
>>> McDonald's  Shader.py
>>> obtainable from :
>>> https://swiftcoder.wordpress.com/2008/12/19/simple-glsl-wrapper-for-pyglet/
>>> 
>>>
>>>  but the code there is badly formatted and after unscrambling it I can't
>>> get it to run.
>>>  Is there somewhere else I can acquire this code?
>>>
>>
>> Ok I've now found it, but when used errors:
>>
>>   File "C:/Python/Python36/Dhruve and me/Pyglet\shader.py", line 40, in
>> createShader
>> src = (c_char_p * count)(*strings)
>> NameError: name 'c_char_p' is not defined
>>
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>> .
>>
>
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Nick "Mac" McElwaine

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