OpenGL path : which hardware needed

[skuld]

Hi all,

I'm using Celestia 1.3.1, under Linux, with a Geforce FX5600, and 61.06 drivers.

I only have the following OpenGL paths :
- Basic
- Multitexture
- NvCombiners
- DOT3 ARBVP
- nvCombiners ARBVP

Which hardware is needed to use
- NvCombiners NvBP
- ARBFP ARBVP
- NV30

a glxinfo gives me

Code: Select all

server glx vendor string: NVIDIA Corporation
server glx version string: 1.3
server glx extensions:
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig,
    GLX_SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_swap_control,
    GLX_ARB_multisample, GLX_NV_float_buffer
client glx vendor string: NVIDIA Corporation
client glx version string: 1.3
client glx extensions:
    GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_visual_info,
    GLX_EXT_visual_rating, GLX_EXT_import_context, GLX_SGI_video_sync,
    GLX_NV_swap_group, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
    GLX_SGI_swap_control, GLX_NV_float_buffer
GLX extensions:
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig,
    GLX_SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_swap_control,
    GLX_ARB_multisample, GLX_NV_float_buffer, GLX_ARB_get_proc_address
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce FX 5600/AGP/SSE2
OpenGL version string: 1.5.1 NVIDIA 61.06
OpenGL extensions:
    GL_ARB_depth_texture, GL_ARB_fragment_program,
    GL_ARB_fragment_program_shadow, GL_ARB_fragment_shader, GL_ARB_imaging,
    GL_ARB_multisample, GL_ARB_multitexture, GL_ARB_occlusion_query,
    GL_ARB_point_parameters, GL_ARB_point_sprite, GL_ARB_shadow,
    GL_ARB_shader_objects, GL_ARB_shading_language_100,
    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_dot3,
    GL_ARB_texture_mirrored_repeat, GL_ARB_transpose_matrix,
    GL_ARB_vertex_buffer_object, GL_ARB_vertex_program, GL_ARB_vertex_shader,
    GL_ARB_window_pos, GL_S3_s3tc, GL_EXT_texture_env_add, GL_EXT_abgr,
    GL_EXT_bgra, GL_EXT_blend_color, GL_EXT_blend_func_separate,
    GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_compiled_vertex_array,
    GL_EXT_Cg_shader, GL_EXT_draw_range_elements, GL_EXT_fog_coord,
    GL_EXT_multi_draw_arrays, GL_EXT_packed_pixels, GL_EXT_paletted_texture,
    GL_EXT_pixel_buffer_object, GL_EXT_point_parameters,
    GL_EXT_rescale_normal, GL_EXT_secondary_color,
    GL_EXT_separate_specular_color, GL_EXT_shadow_funcs,
    GL_EXT_shared_texture_palette, GL_EXT_stencil_two_side,
    GL_EXT_stencil_wrap, GL_EXT_texture3D, GL_EXT_texture_compression_s3tc,
    GL_EXT_texture_cube_map, GL_EXT_texture_edge_clamp,
    GL_EXT_texture_env_combine, GL_EXT_texture_env_dot3,
    GL_EXT_texture_filter_anisotropic, GL_EXT_texture_lod,
    GL_EXT_texture_lod_bias, GL_EXT_texture_object, GL_EXT_vertex_array,
    GL_HP_occlusion_test, GL_IBM_rasterpos_clip,
    GL_IBM_texture_mirrored_repeat, GL_KTX_buffer_region, GL_NV_blend_square,
    GL_NV_copy_depth_to_color, GL_NV_depth_clamp, GL_NV_fence,
    GL_NV_float_buffer, GL_NV_fog_distance, GL_NV_fragment_program,
    GL_NV_fragment_program_option, GL_NV_half_float, GL_NV_light_max_exponent,
    GL_NV_multisample_filter_hint, GL_NV_occlusion_query,
    GL_NV_packed_depth_stencil, GL_NV_pixel_data_range, GL_NV_point_sprite,
    GL_NV_primitive_restart, GL_NV_register_combiners,
    GL_NV_register_combiners2, GL_NV_texgen_reflection,
    GL_NV_texture_compression_vtc, GL_NV_texture_env_combine4,
    GL_NV_texture_expand_normal, GL_NV_texture_rectangle,
    GL_NV_texture_shader, GL_NV_texture_shader2, GL_NV_texture_shader3,
    GL_NV_vertex_array_range, GL_NV_vertex_array_range2, GL_NV_vertex_program,
    GL_NV_vertex_program1_1, GL_NV_vertex_program2,
    GL_NV_vertex_program2_option, GL_SGIS_generate_mipmap,
    GL_SGIS_texture_lod, GL_SGIX_depth_texture, GL_SGIX_shadow,
    GL_SUN_slice_accum
glu version: 1.3
glu extensions:
    GLU_EXT_nurbs_tessellator, GLU_EXT_object_space_tess

Thanks in advance for your help[/code]

[Guest]

Which hardware is needed to use
- NvCombiners NvBP
- ARBFP ARBVP
- NV30

If I undestand well :
- ARBFP ARBVP needs the GL_ARB_vertex_program and GL_ARB_fragement_program (but my graphic card supports them, why can't I access to this OpenGL path ?)

- NV30 is the Geforce FX family. So I should have access to it.

- NvCombiners NvBP needs the supported GL_NV_register_combiners extension, but I don't know what is NvBP, and if its supported by my graphic adapter.

[skuld]

OK, I've looked into celestia source code, and found this (into glcontext.cpp) :

"NvCombiners NvVP" is disabled because "NvCombiners ARBVP" is supported

But

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    case GLPath_ARBFP_ARBVP:
        return false;
        /*
        return (extensionSupported("GL_ARB_vertex_program") &&
                extensionSupported("GL_ARB_fragment_program") &&
                vertexProc != NULL);
        */

    case GLPath_NV30:
        return false;
        /*
        return (extensionSupported("GL_ARB_vertex_program") &&
                extensionSupported("GL_NV_fragment_program"));
        */


Why "ARBFP ARBVP" and "NV30" are disabled ? Is there some rendering issue ?