[vtkusers] Re: Java, VTK, and XFree & Mesa OpenGL Problems

[Kent Vander Velden]

  I have done some more digging concerning vtkJavaPanel failing and after 
enabling all the debug environment variables that I know of for Mesa the
following message are generated.  The last few lines are likely the 
most important... namely:

Mesa warning: glEnable(GL_DEPTH_TEST) but no depth buffer
Mesa user error: GL_INVALID_OPERATION in glDrawBuffer

  The "user error" message repeats itself with every screen update.
These error messages are not reported with Regression.java or with
programs using vtkJavaPanel on a XFree 3.3.6 machine.  The problem only
seems to occur with XFree 4.0.1.  Disabling DRI (Direct Rendering
Interface) does not fix the problem.  Does anyone have an idea of why
this might be happening and how to fix it?

  Thanks!



morph_3d_java|Tue9:00pm} java -classpath .:/usr/local/lib/vtk.jar sphere2
libGL: trying /usr/X11R6/lib/modules/dri/tdfx_dri.so
libGL: trying /usr/X11R6/lib/modules/dri/tdfx_dri.so
GenuineIntel cpu detected.
MMX cpu detected.
Mesa GL_VERSION = 1.2 Mesa 3.3 beta
Mesa GL_RENDERER = Mesa DRI Voodoo3 20000616
Mesa GL_VENDOR = Precision Insight, Inc.
Mesa GL_EXTENSIONS = GL_ARB_multitexture GL_ARB_tranpose_matrix GL_EXT_abgr GL_EXT_blend_func_separate GL_EXT_clip_volume_hint GL_EXT_compiled_vertex_array GL_EXT_histogram GL_EXT_packed_pixels GL_EXT_paletted_texture GL_EXT_point_parameters GL_EXT_polygon_offset GL_EXT_rescale_normal GL_EXT_shared_texture_palette GL_EXT_stencil_wrap GL_EXT_texture3D GL_EXT_texture_env_add GL_EXT_texture_object GL_EXT_texture_lod_bias GL_EXT_vertex_array GL_INGR_blend_func_separate GL_MESA_window_pos GL_MESA_resize_buffers GL_NV_texgen_reflection GL_PGI_misc_hints GL_SGI_color_matrix GL_SGI_color_table GL_SGIS_pixel_texture GL_SGIS_texture_edge_clamp GL_SGIX_pixel_texture 3DFX_set_global_palette
Mesa thread-safe: YES
Mesa x86-optimized: YES
Mesa warning: glEnable(GL_DEPTH_TEST) but no depth buffer
Mesa user error: GL_INVALID_OPERATION in glDrawBuffer
Mesa user error: GL_INVALID_OPERATION in glDrawBuffer
Mesa user error: GL_INVALID_OPERATION in glDrawBuffer
Mesa user error: GL_INVALID_OPERATION in glDrawBuffer
Mesa user error: GL_INVALID_OPERATION in glDrawBuffer
Mesa user error: GL_INVALID_OPERATION in glDrawBuffer
Mesa user error: GL_INVALID_OPERATION in glDrawBuffer

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Kent Vander Velden
kent at iastate.edu