Hey all,
Just found pyglet this week, and it beats the pants off pygame :-). I
noticed some funny behavior when changing the anchor point on an image
and TextureBin. Consider the following snippets:
# Works
img = image.load('foo.png')
bin = TextureBin()
img_t = bin.add(img)
img_t.anchor_y = 10
# Throws GLError exception. See end of message
img = image.load('foo.png')
img.anchor_y = 10
bin = TextureBin()
img_t = bin.add(img) # Throws exception
Looking through the documentation, this isn't immediately obvious why
this is an error, though there is a hint under
pyglet.image.atlas.TextureAtlas ("This method will fail if the given
image cannot be transferred directly to a texture"). Is this behavior
correct? I would expect the image to be blitted to the texture as
normal, and the TextureRegion to have the correct anchor value. It's
not too big of a deal, seeing that I can just change the anchor of the
TextureRegion instead of the image, it just had me stumped for a
while.
Cheers,
Robbie
Here's the exception thrown:
Traceback (most recent call last):
File "./test.py", line 11, in <module>
img_t = bin.add(img)
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/
python2.6/site-packages/pyglet/image/atlas.py", line 259, in add
return atlas.add(img)
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/
python2.6/site-packages/pyglet/image/atlas.py", line 207, in add
self.texture.blit_into(img, x, y, 0)
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/
python2.6/site-packages/pyglet/image/__init__.py", line 1598, in
blit_into
source.blit_to_texture(self.target, self.level, x, y, z)
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/
python2.6/site-packages/pyglet/image/__init__.py", line 948, in
blit_to_texture
data)
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/
python2.6/site-packages/pyglet/gl/lib.py", line 105, in errcheck
raise GLException(msg)
pyglet.gl.lib.GLException: invalid value
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