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IRIX 6.2 Applications 1996 August
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Silicon_Graphics_812-0542-002.iso
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relnotes
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xlators_3d
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ch3.z
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ch3
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1996-08-03
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4KB
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133 lines
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3. _K_n_o_w_n__P_r_o_b_l_e_m_s__a_n_d__W_o_r_k_a_r_o_u_n_d_s
+o _A_l_i_a_s _t_o _O_p_e_n _I_n_v_e_n_t_o_r _T_r_a_n_s_l_a_t_o_r _L_i_m_i_t_a_t_i_o_n_s: Only
Alias wire files, versions 5.0, 5.0.1, 5.1, and 5.1.1
are supported. Every texture map is assumed to be a
color texture map. Only the first texture attached to
a shader is converted. Procedural textures are not
converted. Only the first shader attached to a surface
or face is converted. If a surface or face was linked
to an exclusive light it will be illuminated by both
that light and all non-exclusive lights. Area lights
and linear lights are not converted.
+o _D_X_F _t_o _O_p_e_n _I_n_v_e_n_t_o_r _T_r_a_n_s_l_a_t_o_r _L_i_m_i_t_a_t_i_o_n_s: Only DXF
R12 files are supported. 16-bit (BIGFONT) shape data,
including Kanji Text, is not handled. Some Intergraph
Microstation DXF files are not completely handled,
especially if containing "exploded" views. Non-
standard DXF files may not be handled properly. The
translator is written to convert AutoCAD DXF files as
ouput by AutoCAD and does not handle every possible DXF
file. Problems are handled by: layer names with spaces,
missing header information, decimal points in integer
fields, etc.
+o _S_o_f_t_i_m_a_g_e _t_o _O_p_e_n _I_n_v_e_n_t_o_r _T_r_a_n_s_l_a_t_o_r _L_i_m_i_t_a_t_i_o_n_s:
Only Softimage version 2.6 .hrc files are supported.
The triangulation algorithm still sometimes produces
small or thin triangles which generate GL errors.
However, the errors are often not visually discernable.
There is a difference between how offset looks in
Softimage and Open Inventor. In Softimage, the base
material shows through when the texture coordinates are
off the texture map. In Open Inventor, the row of
pixels on the boundary is repeated to the edge of the
object. This may result in streaks. The texture can be
repeated but it cannot flip orientation while it is
being repeated. Spherical and Cylindrical textures may
not translate well. In some situations, importing an
object into an existing Open Inventor scene will not
work correctly when using a bounding box to place and
scale the imported object. In these situations, try
using the '-i' option to the translator.
+o _O_b_j _t_o _O_p_e_n _I_n_v_e_n_t_o_r _T_r_a_n_s_l_a_t_o_r _L_i_m_i_t_a_t_i_o_n_s: Only Obj
versions 3.0 and 4.0 files are supported.
+o _O_p_e_n _I_n_v_e_n_t_o_r _t_o _R_e_n_d_e_r_m_a_n _T_r_a_n_s_l_a_t_o_r _L_i_m_i_t_a_t_i_o_n_s:
Translation is supported between Open Inventor 2.0 and
Renderman 3.0.3 only. Translation of Open Inventor
text is not supported.
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