Hi, Ben,
Many thanks for your detailed explaination, I think I get the ideas. Well,
I think I have already meet ctype problems, I want to use glGet() to get
values, and the code I wrote.
for i in range(10):
glPointSize(i+0.5)
a = GLfloat() * 2
glGetFloatv(GL_POINT_SIZE_RANGE,a)
print(a)
glBegin(GL_POINTS)
glColor3f(1.0,1.0,0.0)
glVertex3f(i-5.0,1.0,0.0)
glEnd()
It does not work, I think I meet the problem of ctypes, I read your code
you showed to me, it is precise. I will check the Ctypes first, thank you
very much!
BTW, it seemed that my post is auto to be a maillist. ^ v ^ Maybe I can
reply it by E-mail instead of VPN.
在 2016年12月4日星期日 UTC+8下午10:17:14，Benjamin Moran写道：
>
> Pyglet's OpenGL bindings should support very recent versions. (If not,
> please file a bug so that they can be updated).
>
> Internally, Pyglet only uses "classic" OpenGL. This older OpenGL is much
> simpler, and is enough for most simple games and applications. This is what
> the pyglet text, sprite, and graphics modules are based on.
> Modern OpenGL can be used by simply requesting a newer OpenGL context when
> creating the window. However, you have to give up on the sprite and
> graphics modules because they will try to call some older OpenGL functions
> that may not be available with a newer context.
>
> Working with shaders does require knowing some ctypes, but there is a nice
> library here that hides that: https://github.com/gabdube/pyshaders
> I also wrote a very basic shader program wrapper here:
> https://bitbucket.org/treehousegames/pyglet/src/28d33a50ba8c1f140613ca90de7791260a3d9daa/pyglet/graphics/shader.py?at=shader_class&fileviewer=file-view-default
> I would probably not recommend the one i wrote, but it might give you an
> idea of the ctypes involved. Ctypes is actually very easy to use, but if
> you don't understand the basic C concepts it will be challenging.
>
>
>
>
> On Sunday, December 4, 2016 at 9:33:27 PM UTC+9, [email protected] wrote:
>>
>> I can use from pyglet.gl import * to use OpenGL, in docs, it is said
>> that *pyglet provides an interface to OpenGL and GLU. To use it you will
>> need a good knowledge of OpenGL, C and ctypes. *To be honest, I know
>> nothing about OpenGL, but I knew OpenGL has its own versions, and which
>> version is used in pyglet? It seemed that there are modern OpenGL (OpenGL 3
>> and 4) , and “old” OpenGL (OpenGL 1 and 2). Is there much difference
>> between them? Could I use pyglet to learn OpenGL, or only C++ is fine?
>>
>
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