write-access to indices attribute of vertex_list_indexed overwrites vertex data with the vertices of a different vertex_list_indexed

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Run the attached program, notice two quads
2. Uncomment the line indicated that should have no effect
3. Re-run the program, notice that the blue quad became a triangle

Paste in the traceback or error message:

Other: Paste in the output of tools/gl_info.py (included in source distro):
There is nothing but inspect_font.py in the tools directory of the tarbool
:( So I paste the output of python -m pyglet.info although I run Python 2.6.1

------------------------------------------------------------------------------
sys.version: 2.6.1 (r261:67515, Jul  7 2009, 23:51:51) 
[GCC 4.2.1 (Apple Inc. build 5646)]
sys.platform: darwin
os.getcwd(): /Users/regular/dev/talkshow/pyglet-1.1.3

pyglet
------------------------------------------------------------------------------
pyglet.version: 1.1.3
pyglet.__file__: pyglet/__init__.py
pyglet.options['debug_trace_depth'] = 1
pyglet.options['font'] = ('gdiplus', 'win32')
pyglet.options['xsync'] = True
pyglet.options['debug_trace_flush'] = True
pyglet.options['debug_win32'] = False
pyglet.options['debug_gl_trace'] = False
pyglet.options['debug_x11'] = False
pyglet.options['shadow_window'] = True
pyglet.options['debug_font'] = False
pyglet.options['debug_media'] = False
pyglet.options['debug_trace'] = False
pyglet.options['debug_lib'] = False
pyglet.options['graphics_vbo'] = True
pyglet.options['vsync'] = None
pyglet.options['debug_trace_args'] = False
pyglet.options['debug_gl'] = True
pyglet.options['debug_graphics_batch'] = False
pyglet.options['audio'] = ('directsound', 'openal', 'alsa', 'silent')
pyglet.options['debug_texture'] = False
pyglet.options['debug_gl_trace_args'] = False

pyglet.window
------------------------------------------------------------------------------
platform: <pyglet.window.carbon.CarbonPlatform object at 0x65f2f0>
display: <pyglet.window.carbon.CarbonDisplay object at 0x65f330>
screens[0]: CarbonScreen(x=0, y=0, width=1920, height=1200)
config['double_buffer'] = 1
config['stereo'] = 0
config['buffer_size'] = 32
config['aux_buffers'] = 0
config['sample_buffers'] = 0
config['samples'] = 0
config['red_size'] = 8
config['green_size'] = 8
config['blue_size'] = 8
config['alpha_size'] = 8
config['depth_size'] = 32
config['stencil_size'] = 0
config['accum_red_size'] = 0
config['accum_green_size'] = 0
config['accum_blue_size'] = 0
config['accum_alpha_size'] = 0
context: CarbonGLContext()

pyglet.gl.gl_info
------------------------------------------------------------------------------
gl_info.get_version(): 2.0 ATI-1.6.2
gl_info.get_vendor(): ATI Technologies Inc.
gl_info.get_renderer(): ATI Radeon X1600 OpenGL Engine
gl_info.get_extensions():
   GL_APPLE_aux_depth_stencil
   GL_APPLE_client_storage
   GL_APPLE_element_array
   GL_APPLE_fence
   GL_APPLE_float_pixels
   GL_APPLE_flush_buffer_range
   GL_APPLE_flush_render
   GL_APPLE_object_purgeable
   GL_APPLE_packed_pixels
   GL_APPLE_pixel_buffer
   GL_APPLE_rgb_422
   GL_APPLE_specular_vector
   GL_APPLE_texture_range
   GL_APPLE_transform_hint
   GL_APPLE_vertex_array_object
   GL_APPLE_vertex_array_range
   GL_APPLE_vertex_program_evaluators
   GL_APPLE_ycbcr_422
   GL_ARB_depth_texture
   GL_ARB_draw_buffers
   GL_ARB_fragment_program
   GL_ARB_fragment_program_shadow
   GL_ARB_fragment_shader
   GL_ARB_half_float_pixel
   GL_ARB_half_float_vertex
   GL_ARB_imaging
   GL_ARB_multisample
   GL_ARB_multitexture
   GL_ARB_occlusion_query
   GL_ARB_pixel_buffer_object
   GL_ARB_point_parameters
   GL_ARB_point_sprite
   GL_ARB_shader_objects
   GL_ARB_shader_texture_lod
   GL_ARB_shading_language_100
   GL_ARB_shadow
   GL_ARB_shadow_ambient
   GL_ARB_texture_border_clamp
   GL_ARB_texture_compression
   GL_ARB_texture_cube_map
   GL_ARB_texture_env_add
   GL_ARB_texture_env_combine
   GL_ARB_texture_env_crossbar
   GL_ARB_texture_env_dot3
   GL_ARB_texture_float
   GL_ARB_texture_mirrored_repeat
   GL_ARB_texture_non_power_of_two
   GL_ARB_texture_rectangle
   GL_ARB_texture_rg
   GL_ARB_transpose_matrix
   GL_ARB_vertex_blend
   GL_ARB_vertex_buffer_object
   GL_ARB_vertex_program
   GL_ARB_vertex_shader
   GL_ARB_window_pos
   GL_ATI_blend_equation_separate
   GL_ATI_blend_weighted_minmax
   GL_ATI_separate_stencil
   GL_ATI_texture_compression_3dc
   GL_ATI_texture_env_combine3
   GL_ATI_texture_float
   GL_ATI_texture_mirror_once
   GL_EXT_abgr
   GL_EXT_bgra
   GL_EXT_blend_color
   GL_EXT_blend_equation_separate
   GL_EXT_blend_func_separate
   GL_EXT_blend_minmax
   GL_EXT_blend_subtract
   GL_EXT_clip_volume_hint
   GL_EXT_compiled_vertex_array
   GL_EXT_draw_range_elements
   GL_EXT_fog_coord
   GL_EXT_framebuffer_blit
   GL_EXT_framebuffer_multisample
   GL_EXT_framebuffer_object
   GL_EXT_geometry_shader4
   GL_EXT_gpu_program_parameters
   GL_EXT_multi_draw_arrays
   GL_EXT_packed_depth_stencil
   GL_EXT_rescale_normal
   GL_EXT_secondary_color
   GL_EXT_separate_specular_color
   GL_EXT_shadow_funcs
   GL_EXT_stencil_two_side
   GL_EXT_stencil_wrap
   GL_EXT_texture_compression_dxt1
   GL_EXT_texture_compression_s3tc
   GL_EXT_texture_env_add
   GL_EXT_texture_filter_anisotropic
   GL_EXT_texture_lod_bias
   GL_EXT_texture_mirror_clamp
   GL_EXT_texture_rectangle
   GL_EXT_texture_sRGB
   GL_EXT_transform_feedback
   GL_IBM_rasterpos_clip
   GL_NV_blend_square
   GL_NV_fog_distance
   GL_NV_light_max_exponent
   GL_NV_texgen_reflection
   GL_SGIS_generate_mipmap
   GL_SGIS_texture_edge_clamp
   GL_SGIS_texture_lod
   GL_SGI_color_matrix

pyglet.gl.glu_info
------------------------------------------------------------------------------
glu_info.get_version(): 1.3 MacOSX
glu_info.get_extensions():

pyglet.gl.glx_info
------------------------------------------------------------------------------
GLX not available.

pyglet.media
------------------------------------------------------------------------------
driver: pyglet.media.drivers.openal

pyglet.media.avbin
------------------------------------------------------------------------------
Library: <CDLL '/usr/local/lib/libavbin.dylib', handle 11311e0 at 1869fd0>
AVbin version: 5
FFmpeg revision: 13661

pyglet.media.drivers.openal
------------------------------------------------------------------------------
Library: <CDLL '/System/Library/Frameworks/OpenAL.framework/OpenAL', handle
1115f90 at 4e5390>
Version: (1, 1)
Extensions:
   ALC_EXT_capture
   ALC_ENUMERATION_EXT
   ALC_EXT_MAC_OSX
   ALC_EXT_ASA
   ALC_EXT_ASA_DISTORTION
   ALC_EXT_ASA_ROGER_BEEP

Any additional info (platform/language/hardware) that may be relevant?

Original issue reported on code.google.com by regular....@gmail.com on 30 Oct 2009 at 8:53

Attachments:

• indexed.py

[GoogleCodeExporter]

What's going on is becoming more obvious if you comment out the line
a.draw(pyglet.gl.GL_TRIANGLES)
And "tarbool" should read "tarball" -- it's been a long day.

Original comment by regular....@gmail.com on 30 Oct 2009 at 9:07

[GoogleCodeExporter]

No bug here.
in
vli = vertex_list_indexed(count, indices, *data)
will use the indices to copy from *data, but generates its own indices array, 
which 
you can see as vli.indices
The original reporter wrongly assumed the input param indices was copied to 
vli.indices

Original comment by ccanepacc@gmail.com on 29 Jan 2010 at 5:45