Thanks for your answer @claudio canepa. I'm not sure if this patch would
fix my problem. I tried it ad hoc and the memory error was not thrown in
_ensure_string_data anymore, but later in the _convert method when calling data
= asbytes('').join(rows) on line 1068.
I tried out some more stuff and called e.g. get_data() before calling
get_texture() just to see what happens:
data = self._image.get_data('BGR', self._image.width*3)
self._texture = self._image.get_texture()
The call to get_data() forces a conversion, because the original pitch
after loading the image is negative. This conversion runs through
successfully it seems but the subsequent call to get_texture() now breaks
at another point:
self._texture = self._image.get_texture()
File "D:\Python27\lib\site-packages\pyglet\image\__init__.py", line 818,
in get_texture
force_rectangle)
File "D:\Python27\lib\site-packages\pyglet\image\__init__.py", line 803,
in create_texture
rectangle, force_rectangle)
File "D:\Python27\lib\site-packages\pyglet\image\__init__.py", line 1508,
in create
blank = (GLubyte * (texture_width * texture_height * 4))()
MemoryError
I.e., it throws an error when it tries to allocate a blank data buffer of
the required texture size ... What is this MemoryError anyway? Does it come
from Pyglet, from OpenGL, from the ctypes module?
Am Sonntag, 26. Februar 2017 19:06:40 UTC+1 schrieb claudio canepa:
>
> As a long shot you may try with the patch in
> https://code.google.com/archive/p/pyglet/issues/752
> It probably not address directly your problem, but as it eliminates a
> buffer copy...
>
> On Sun, Feb 26, 2017 at 10:36 AM, Manuel Kaufmann <[email protected]
> <javascript:>> wrote:
>
>> Hi,
>>
>> I am using Pyglet 1.2.4 to render a texturized 3D Mesh composed of
>> triangles and stored as an OBJ file. The mesh is not small, but also not
>> extremely huge: It takes up about 52 MB on the harddisk and consists of
>> roughly 800'000 faces (~ 366'500 vertices). The texture is available as a
>> .jpeg, takes up about 6.5 MB on the harddisk and its resolution is
>> 8192x8192.
>>
>> In order to upload the texture to the GPU, I do the following:
>>
>> self._image = pyglet.image.load(image_path)
>>
>> ...
>> self._texture = self._image.get_texture()
>>
>> which *sometimes *throws the following error:
>>
>> ...
>> self._texture = self._image.get_texture()
>> File "D:\Python27\lib\site-packages\pyglet\image\__init__.py", line 818
>> , in get_texture
>> force_rectangle)
>> File "D:\Python27\lib\site-packages\pyglet\image\__init__.py", line 809
>> , in create_texture
>> self.anchor_x, self.anchor_y, 0, None)
>> File "D:\Python27\lib\site-packages\pyglet\image\__init__.py", line 953
>> , in blit_to_texture
>> data = self._convert(data_format, data_pitch)
>> File "D:\Python27\lib\site-packages\pyglet\image\__init__.py", line
>> 1008, in _convert
>> self._ensure_string_data()
>> File "D:\Python27\lib\site-packages\pyglet\image\__init__.py", line
>> 1076, in _ensure_string_data
>> self._current_data = buf.raw
>> MemoryError
>>
>> I tried to find out why this happens, but to no avail. I know that the
>> computer I am using is powerful enough to handle mesh sizes like that, both
>> because the error only happens sometimes and because I can visualize it
>> without problems using programs like e.g. Meshlab. Any help/hints how I can
>> resolve or further debug this are greatly appreciated!
>>
>> Thanks a lot and best regards
>> Manuel
>>
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>
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