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- eeeennnnddddffffeeeeeeee((((3333GGGG)))) eeeennnnddddffffeeeeeeee((((3333GGGG))))
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- NNNNAAAAMMMMEEEE
- ffffeeeeeeeeddddbbbbaaaa,,,, eeeennnnddddffffeeeeeeee - control feedback mode
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- FFFFOOOORRRRTTTTRRRRAAAANNNN 77777777 SSSSPPPPEEEECCCCIIIIFFFFIIIICCCCAAAATTTTIIIIOOOONNNN
- _P_e_r_s_o_n_a_l _I_r_i_s, _I_r_i_s _E_n_t_r_y, _I_n_d_y, _X_L,
- ssssuuuubbbbrrrroooouuuuttttiiiinnnneeee ffffeeeeeeeeddddbbbbaaaa((((bbbbuuuuffffffffeeeerrrr,,,, ssssiiiizzzzeeee))))
- rrrreeeeaaaallll bbbbuuuuffffffffeeeerrrr((((ssssiiiizzzzeeee))))
- iiiinnnntttteeeeggggeeeerrrr****4444 ssssiiiizzzzeeee
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- iiiinnnntttteeeeggggeeeerrrr****4444 ffffuuuunnnnccccttttiiiioooonnnn eeeennnnddddffffeeeeeeee((((bbbbuuuuffffffffeeeerrrr))))
- rrrreeeeaaaallll bbbbuuuuffffffffeeeerrrr((((****))))
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- _O_t_h_e_r _m_o_d_e_l_s:
- ssssuuuubbbbrrrroooouuuuttttiiiinnnneeee ffffeeeeeeeeddddbbbbaaaa((((bbbbuuuuffffffffeeeerrrr,,,, ssssiiiizzzzeeee))))
- iiiinnnntttteeeeggggeeeerrrr****2222 bbbbuuuuffffffffeeeerrrr((((ssssiiiizzzzeeee))))
- iiiinnnntttteeeeggggeeeerrrr****4444 ssssiiiizzzzeeee
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- iiiinnnntttteeeeggggeeeerrrr****4444 ffffuuuunnnnccccttttiiiioooonnnn eeeennnnddddffffeeeeeeee((((bbbbuuuuffffffffeeeerrrr))))
- iiiinnnntttteeeeggggeeeerrrr****2222 bbbbuuuuffffffffeeeerrrr((((****))))
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- PPPPAAAARRRRAAAAMMMMEEEETTTTEEEERRRRSSSS
- _b_u_f_f_e_r expects a buffer into which the system writes the feedback
- output from the Geometry Pipeline. On the Personal Iris, Iris
- Entry, Indy, XL, XS, XS24, Elan, Extreme, and VGX, the output
- consists of 32-bit floating point values; on the other IRIS-4D
- models, the output consists of 16-bit integer values. Be sure
- you declare your buffer appropriately.
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- _s_i_z_e expects the maximum number of buffer elements into which the
- system will write feedback output. This must not exceed the
- number of elements in _b_u_f_f_e_r.
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- FFFFUUUUNNNNCCCCTTTTIIIIOOOONNNN RRRREEEETTTTUUUURRRRNNNN VVVVAAAALLLLUUUUEEEE
- The return value of eeeennnnddddffffeeeeeeee is the actual number of elements of _b_u_f_f_e_r
- that were written. The system will not write more than _s_i_z_e elements,
- even when the amount of feedback exceeds it. You should assume that
- overflow has occurred whenever the return value is _s_i_z_e.
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- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- ffffeeeeeeeeddddbbbbaaaa puts the system in feedback mode. In feedback mode, the system
- retains the output of the Geometry Pipeline rather than sending it to the
- rendering subsystem. eeeennnnddddffffeeeeeeee turns off feedback mode and returns the
- feedback output in _b_u_f_f_e_r. This information is typically a description
- of a vertex, and is machine specific. For information for interpreting
- the returned buffer, see the ``Feedback'' chapter of the _G_r_a_p_h_i_c_s _L_i_b_r_a_r_y
- _P_r_o_g_r_a_m_m_i_n_g _G_u_i_d_e.
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- NNNNOOOOTTTTEEEESSSS
- These routines are available only in immediate mode.
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- PPPPaaaaggggeeee 1111
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- eeeennnnddddffffeeeeeeee((((3333GGGG)))) eeeennnnddddffffeeeeeeee((((3333GGGG))))
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- On the IRIS-4D G, GT, and GTX models the size of the buffer should never
- exceed 0x10000 bytes. On the IRIS-4D VGX model the size of the buffer
- should never exceed 0x80000 bytes. On the IRIS-4D RealityEngine models
- the size of the buffer is limited by the amount of memory that can be
- locked down by the system.
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- PPPPaaaaggggeeee 2222
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