Is there a more efficient way to update large vertex list buffers than
vertex_list.attribute = some_iterable? For example, I'm guessing that by
default vertex_list.set_attribute is converting the iterable to a ctypes
array at some point. If I have the data in a numpy array and access it
directly as a ctypes array, could I skip this step?
On Sat, Aug 25, 2018 at 9:54 AM Joshua Dempster <panavi...@gmail.com> wrote:
> Thanks Ben! No reason not to use batches, just trying to understand the
> low-level module.
>
> On Thu, Aug 23, 2018 at 10:37 PM Benjamin Moran <benmora...@gmail.com>
> wrote:
>
>> Hi Josh,
>>
>> There is a typo with the vertex color type. It looks like you want to use
>> 8bit values, so If you change *c4b* to *c4B* it should work.
>>
>> By the way, is there a specific reason you're using Domains directly,
>> instead of just creating a Batch? There is nothing wrong with your
>> approach, but using a Batch might save a bit of boilerplate.
>>
>> -Ben
>>
>> On Thursday, August 23, 2018 at 3:13:34 AM UTC+9, Josh wrote:
>>>
>>> Hi all,
>>>
>>> I have what (I thought) is a MWE for drawing primitives with a
>>> VertexDomain:
>>> import pyglet
>>> from pyglet.gl import *
>>>
>>> if __name__ == '__main__':
>>>
>>> display = pyglet.window.Window(400, 400)
>>>
>>>
>>> domain = pyglet.graphics.vertexdomain.create_domain('v2i/stream',
>>> 'c4b/stream')
>>> vertex_list = domain.create(4)
>>> vertex_list.vertices = [50, 50, 50, 100, 100, 100, 100, 50]
>>> vertex_list.colors = [
>>> 255, 255, 255, 255,
>>> 255, 0, 0, 255,
>>> 0, 255, 0, 255,
>>> 0, 0, 255, 255
>>> ]
>>>
>>> @display.event
>>> def on_draw():
>>> display.clear()
>>> pyglet.graphics.draw(1, GL_POINTS, ('v2i',(10,20)))
>>> domain.draw(GL_POINTS)
>>>
>>> pyglet.app.run()
>>>
>>> However, while the single pixel drawn directly by
>>> pyglet.graphics.drawshows up, the points from the vertex domain don't. What
>>> am I missing?
>>>
>>>
>>> --
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