setting non-square tarnish texture causes Access Violation

[Nicky Mac]

I don't  have a problem creating and applying square textures, using windows10 python36 and latest pyglet but following  tutorials to apply 'tarnish' size 512 x 256 I get an access violation. Here is th stripped-down code: #!/usr/bin/env python import pyglet from pyglet.gl  import * from pyglet import window, image, resource from pyglet.window import key from random   import randint from math     import cos, sin from glframe  import GLFrame from fakeglut import glutSolidSphere from gltools  import gltDrawSphere from math3d   import M3DMatrix44f, m3dInvertMatrix44 frameCamera = GLFrame() class MainWindow(window.Window):     def __init__(self, *args, **kwargs):         window.Window.__init__(self, *args, **kwargs)         # Cull backs of polygons         glCullFace(GL_BACK)         glFrontFace(GL_CCW)         glEnable(GL_CULL_FACE)         glEnable(GL_DEPTH_TEST)         # get tarnish texture object as texture unit 0         glActiveTexture(GL_TEXTURE0)         glEnable(GL_TEXTURE_2D)         img = image.load('Assets/tarnish.jpg')         print('set tarnish texture',(img.width,img.height),img.pitch,type(img))         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, img.width, img.height, 0, GL_RGBA,                          GL_UNSIGNED_BYTE, img.get_data('RGBA', img.pitch))         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)                 glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE)                 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE) which produces: set tarnish texture (512, 256) -1536 <class 'pyglet.image.ImageData'> Traceback (most recent call last):   File "C:\Python\Python36\Dhruve and me\Pyglet\github_tarnish.py", line 105, in <module>     w = MainWindow(800, 600, caption='OpenGL Cube Maps Camera:Arrow keys', resizable=True)   File "C:\Python\Python36\Dhruve and me\Pyglet\github_tarnish.py", line 30, in __init__     GL_UNSIGNED_BYTE, img.get_data('RGBA', img.pitch)) OSError: exception: access violation reading 0x00000234EA147000 >>>.

[Nicky Mac]

Ha!   the access error was caused by specifying RGBA when the image was actually RGB.