CODEWITHSUNDEEP
c++linuxopenglvbo
FranciscoAltoe
FranciscoAltoe

Reputation: 33

OpenGL VBO not working

I've been playing with NeHe's OpenGL tutorials for a while until I decided to switch to more modern tutorials. However, no matter which tutorial I pick, I can't even render a single triangle using VBOs and vertex arrays. While immediate rendering worked perfectly.

Take for example the code from http://ogldev.atspace.co.uk/www/tutorial03/tutorial03.html, make'ing or copying the project to codeblocks to compile it results in a black screen when I run it.
(Note that this tutorial plainly passes the size of the vertex array instead of the number of bytes to glBufferData but even fixing that bug the result remains the same)

I'm currently running Ubuntu (although I had this problem running Windows in the same PC) and the compiler I'm currently using is GCC 4.7.2

I also thought that my video card (Mobility Radeon 4330) could be causing this error by not supporting VBO at all, so here's the output of glxinfo:

name of display: :0.0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
    GLX_ARB_create_context, GLX_ARB_create_context_profile, 
    GLX_ARB_multisample, GLX_EXT_create_context_es2_profile, 
    GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, 
    GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer, GLX_OML_swap_method, 
    GLX_SGI_swap_control, GLX_SGIS_multisample, GLX_SGIX_fbconfig, 
    GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, GLX_INTEL_swap_event
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
    GLX_ARB_create_context, GLX_ARB_create_context_profile, 
    GLX_ARB_create_context_robustness, GLX_ARB_get_proc_address, 
    GLX_ARB_multisample, GLX_EXT_import_context, GLX_EXT_visual_info, 
    GLX_EXT_visual_rating, GLX_EXT_framebuffer_sRGB, 
    GLX_EXT_create_context_es2_profile, GLX_MESA_copy_sub_buffer, 
    GLX_MESA_multithread_makecurrent, GLX_MESA_swap_control, 
    GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGI_make_current_read, 
    GLX_SGI_swap_control, GLX_SGI_video_sync, GLX_SGIS_multisample, 
    GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, 
    GLX_EXT_texture_from_pixmap, GLX_INTEL_swap_event
GLX version: 1.4
GLX extensions:
    GLX_ARB_create_context, GLX_ARB_create_context_profile, 
    GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context, 
    GLX_EXT_visual_info, GLX_EXT_visual_rating, 
    GLX_EXT_create_context_es2_profile, GLX_MESA_copy_sub_buffer, 
    GLX_MESA_multithread_makecurrent, GLX_MESA_swap_control, 
    GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGI_make_current_read, 
    GLX_SGI_swap_control, GLX_SGI_video_sync, GLX_SGIS_multisample, 
    GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, 
    GLX_EXT_texture_from_pixmap
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD RV710
OpenGL version string: 2.1 Mesa 9.0
OpenGL shading language version string: 1.30
OpenGL extensions:
    GL_ARB_multisample, GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color, 
    GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_copy_texture, 
    GL_EXT_polygon_offset, GL_EXT_subtexture, GL_EXT_texture_object, 
    GL_EXT_vertex_array, GL_EXT_compiled_vertex_array, GL_EXT_texture, 
    GL_EXT_texture3D, GL_IBM_rasterpos_clip, GL_ARB_point_parameters, 
    GL_EXT_draw_range_elements, GL_EXT_packed_pixels, GL_EXT_point_parameters, 
    GL_EXT_rescale_normal, GL_EXT_separate_specular_color, 
    GL_EXT_texture_edge_clamp, GL_SGIS_generate_mipmap, 
    GL_SGIS_texture_border_clamp, GL_SGIS_texture_edge_clamp, 
    GL_SGIS_texture_lod, GL_ARB_framebuffer_sRGB, GL_ARB_multitexture, 
    GL_EXT_framebuffer_sRGB, GL_IBM_multimode_draw_arrays, 
    GL_IBM_texture_mirrored_repeat, GL_ARB_texture_cube_map, 
    GL_ARB_texture_env_add, GL_ARB_transpose_matrix, 
    GL_EXT_blend_func_separate, GL_EXT_fog_coord, GL_EXT_multi_draw_arrays, 
    GL_EXT_secondary_color, GL_EXT_texture_env_add, 
    GL_EXT_texture_filter_anisotropic, GL_EXT_texture_lod_bias, 
    GL_INGR_blend_func_separate, GL_NV_blend_square, GL_NV_light_max_exponent, 
    GL_NV_texgen_reflection, GL_NV_texture_env_combine4, GL_S3_s3tc, 
    GL_SUN_multi_draw_arrays, GL_ARB_texture_border_clamp, 
    GL_ARB_texture_compression, GL_EXT_framebuffer_object, 
    GL_EXT_texture_compression_s3tc, GL_EXT_texture_env_combine, 
    GL_EXT_texture_env_dot3, GL_MESA_window_pos, GL_NV_packed_depth_stencil, 
    GL_NV_texture_rectangle, GL_ARB_depth_texture, GL_ARB_occlusion_query, 
    GL_ARB_shadow, GL_ARB_texture_env_combine, GL_ARB_texture_env_crossbar, 
    GL_ARB_texture_env_dot3, GL_ARB_texture_mirrored_repeat, 
    GL_ARB_window_pos, GL_EXT_stencil_two_side, GL_EXT_texture_cube_map, 
    GL_NV_depth_clamp, GL_NV_fog_distance, GL_APPLE_packed_pixels, 
    GL_APPLE_vertex_array_object, GL_ARB_draw_buffers, 
    GL_ARB_fragment_program, GL_ARB_fragment_shader, GL_ARB_shader_objects, 
    GL_ARB_vertex_program, GL_ARB_vertex_shader, GL_ATI_draw_buffers, 
    GL_ATI_texture_env_combine3, GL_ATI_texture_float, GL_EXT_shadow_funcs, 
    GL_EXT_stencil_wrap, GL_MESA_pack_invert, GL_NV_primitive_restart, 
    GL_ARB_depth_clamp, GL_ARB_fragment_program_shadow, 
    GL_ARB_half_float_pixel, GL_ARB_occlusion_query2, GL_ARB_point_sprite, 
    GL_ARB_shading_language_100, GL_ARB_sync, GL_ARB_texture_non_power_of_two, 
    GL_ARB_vertex_buffer_object, GL_ATI_blend_equation_separate, 
    GL_EXT_blend_equation_separate, GL_OES_read_format, 
    GL_ARB_color_buffer_float, GL_ARB_pixel_buffer_object, 
    GL_ARB_texture_compression_rgtc, GL_ARB_texture_float, 
    GL_ARB_texture_rectangle, GL_ATI_texture_compression_3dc, 
    GL_EXT_packed_float, GL_EXT_pixel_buffer_object, 
    GL_EXT_texture_compression_dxt1, GL_EXT_texture_compression_rgtc, 
    GL_EXT_texture_mirror_clamp, GL_EXT_texture_rectangle, 
    GL_EXT_texture_sRGB, GL_EXT_texture_shared_exponent, 
    GL_ARB_framebuffer_object, GL_EXT_framebuffer_blit, 
    GL_EXT_framebuffer_multisample, GL_EXT_packed_depth_stencil, 
    GL_ARB_vertex_array_object, GL_ATI_separate_stencil, 
    GL_ATI_texture_mirror_once, GL_EXT_draw_buffers2, GL_EXT_draw_instanced, 
    GL_EXT_gpu_program_parameters, GL_EXT_texture_array, 
    GL_EXT_texture_compression_latc, GL_EXT_texture_integer, 
    GL_EXT_texture_sRGB_decode, GL_EXT_timer_query, GL_OES_EGL_image, 
    GL_MESA_texture_array, GL_ARB_copy_buffer, GL_ARB_depth_buffer_float, 
    GL_ARB_draw_instanced, GL_ARB_half_float_vertex, GL_ARB_instanced_arrays, 
    GL_ARB_map_buffer_range, GL_ARB_texture_rg, GL_ARB_texture_swizzle, 
    GL_ARB_vertex_array_bgra, GL_EXT_separate_shader_objects, 
    GL_EXT_texture_swizzle, GL_EXT_vertex_array_bgra, 
    GL_NV_conditional_render, GL_AMD_conservative_depth, 
    GL_AMD_draw_buffers_blend, GL_AMD_shader_stencil_export, 
    GL_ARB_ES2_compatibility, GL_ARB_blend_func_extended, GL_ARB_debug_output, 
    GL_ARB_draw_buffers_blend, GL_ARB_draw_elements_base_vertex, 
    GL_ARB_explicit_attrib_location, GL_ARB_fragment_coord_conventions, 
    GL_ARB_provoking_vertex, GL_ARB_sampler_objects, GL_ARB_seamless_cube_map, 
    GL_ARB_shader_stencil_export, GL_ARB_shader_texture_lod, 
    GL_ARB_texture_rgb10_a2ui, GL_ARB_vertex_type_2_10_10_10_rev, 
    GL_EXT_provoking_vertex, GL_EXT_texture_snorm, 
    GL_MESA_texture_signed_rgba, GL_NV_texture_barrier, GL_ARB_robustness, 
    GL_ARB_shader_bit_encoding, GL_ARB_transform_feedback2, 
    GL_ARB_transform_feedback3, GL_ARB_base_instance, 
    GL_ARB_conservative_depth, GL_ARB_texture_storage, 
    GL_ARB_transform_feedback_instanced, GL_EXT_transform_feedback, 
    GL_ARB_invalidate_subdata

Upvotes: 2

Views: 1360

Answers (1)

legends2k
legends2k

Reputation: 32994

The driver for your card Mobility Radeon 4330 is currently Mesa which supports OpenGL 2.1 while modern OpenGL tutorials require 3.1+ OpenGL support.

Specifically, although the http://www.opengl.org/sdk/docs/man2/xhtml/glVertexAttribPointer.xml says that version 2.0+ is enough, some drivers doesn't support it fully. I'd suggest you to upgrade to the latest drivers for your card which would be OpenGL 3.2 and you can happily try out all the exercises from modern tutorials like OGL or Arcsynthesis.

Upvotes: 1

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