getgde(3G)
getgde - gets graphics system description
As shipped in IRIX 6.5.22. Unchanged since IRIX 6.5.
NAME getgde - gets graphics system description FORTRAN 77 SPECIFICATION integer*4 function getgde(inquir) integer*4 inquir PARAMETERS inquiry is a symbolic constant taken from the list below. It identifies the characteristic about which you want to inquire. FUNCTION RETURN VALUE The function returns the value of the requested characteristic, or -1, if the request is invalid or its value cannot be determined. DESCRIPTION getgde allows you to inquire about characteristics of the currently selected screen. If the inquired characteristic is about bitplane configuration, getgde will return a value that indicates the absolute maximum resources available for the individual characteristic. It is not guaranteed that the bitplane configuration will reflect these values, as gconfi reconciles the various requests for resources. You must call getgco to find out the result of the compromises made by gconfi. You can call getgde prior to graphics initialization, as its return values are unaltered by any commands issued after initialization. The symbolic names of the inquiries and their meanings are specified below: Screen Boundary Inquiries GDXMMA GDYMMA Vertical and horizontal size of the screen in millimeters. GDXPMA GDYPMA Vertical and horizontal size of the screen in pixels. GDZMAX GDZMIN Maximum and minimum depth values that can be stored in the z-buffer of the normal framebuffer. Framebuffer Depth Inquiries GDBIAC Maximum number of bitplanes per color component in the hardware accumulation buffer, if one exists. Otherwise the number of bitplanes per color component in the software version of the accumulation buffer, if it is implemented. Otherwise 0. GDBIAH Maximum number of bitplanes per color component in the hardware accumulation buffer, if one exists. Otherwise 0. GDBCUR Number of bitplanes available in the cursor. GDBNDA Maximum number of bitplanes available in the normal framebuffer to store alpha in double buffered RGB mode. GDBNDC Maximum number of bitplanes available in the normal framebuffer to store the color index in double buffered color map mode. GDBNDM Maximum number of bitplanes available in the normal framebuffer to store the color index in double buffered multimap mode. GDBNDR GDBNDG GDBNDB Maximum number of bitplanes available in the normal framebuffer to store red, green, and blue in double buffered RGB mode. If any of these are 0, then double buffered RGB mode is not available. GDBNSA Maximum number of bitplanes available in the normal framebuffer to store alpha in single buffered RGB mode. GDBNSC Maximum number of bitplanes available in the normal framebuffer to store the color index in single buffered color map mode. GDBNSM Maximum number of bitplanes available in the normal framebuffer to store the color index in single buffered multimap mode. GDBNSR GDBNSG GDBNSB Maximum number of bitplanes available in the normal framebuffer to store red, green, and blue in single buffered RGB mode. If any of these are 0, then single buffered RGB mode is not available. GDBNZB Maximum number of useful bitplanes in the z-buffer of the normal framebuffer, If 0, then there is no z-buffer. GDBOSC Maximum number of bitplanes available in the overlay framebuffer to store the color index in single buffered color map mode. GDBPSC Maximum number of bitplanes available in the popup framebuffer to store the color index in single buffered color map mode. GDBIST Maximum number of bitplanes available in the normal framebuffer for use as stencil bitplanes. 0 if stenci is not functional. GDBUSC Maximum number of bitplanes available in the underlay framebuffer to store the color index in single buffered color map mode. Miscellaneous Inquiries GDAFUN 1 if afunct is functional, 0 if it is not. GDAFMO 1 if all afunct functions are supported, 0 if they are not. GDALPH 1 if alpha bitplanes in the normal framebuffer can be allocated as color map bitplanes in the overlay or underlay framebuffers, 0 if they cannot. GDBLEN 1 if blending is supported in all framebuffers that support RGB mode, 0 otherwise. (See blendf.) GDBLCO 1 if blendc is supported in all framebuffers that support RGB mode, 0 otherwise. GDCIFR 1 if fractional interpolation of color indices is supported in all framebuffers, 0 otherwise. (See colorf.) GDCLIP Number of user-defined clipping planes supported. 0 if none are supported. (See clippl.) GDXHCI Color index whose color map entry controls the color of the cross- hair cursor. GDMXPS Number of other graphics pipes available to be video multiplexed with the graphics pipe associated with the current screen. GDDBBO 1 if the dial and button box routines are functional, 0 if they are not. Unlike most of the others, this inquiry is independent of the currently selected screen. (See dbtext and setdbl.) GDDITH 1 if dithering is supported. 0 otherwise. GDFOGV 1 if fogver supports the per vertex fog modes, namely FGVE, FGVE2, and FGVL. 0 if it does not. GDFOGP 1 if fogver supports the per pixel fog modes, namely FGPE, FGVP2, and FGPL. 0 if it does not. GDNATV 0 if the IrisGL implementation is layered on OpenGL. GDFRAM 1 if readso(SRCFRA) is functional, 0 if it is not. GDLIA2 1 if the ATTEN2 lighting model attribute is functional, 0 if it is not. (See lmdef.) GDLISP 1 if spotlights are functional, 0 if they are not. (See lmdef.) GDLITW 1 if the TWOSID lighting model attribute is functional, 0 if it is not. (See lmdef.) GDLSCM 1 if antialiased lines are supported in the normal framebuffer in color map mode, 0 otherwise. (See linesm.) GDLSRG 1 if antialiased lines are supported in RGB mode in all framebuffers that support RGB mode, 0 otherwise. (See linesm.) GDLOGI 1 if logical operations are supported in all framebuffers, 2 if only in the normal framebuffer, and 0 otherwise. (See logico.) GDMULT 1 if the multisample routines are functional, 0 if they are not. GDNBLI Maximum number of blinking color map entries on the selected screen. If the value is non-zero, it will be at least 20. (See blink.) GDNMMA Number of smaller color maps available to the user in multimap mode. On some models, the highest-numbered color map is reserved for use by the system. (See setmap.) GDNSCR Number of screens available on the system. Unlike most of the others, this inquiry is independent of the currently selected screen. GDNURB Maximum order of any NURBS surface, NURBS curve, and NURBS trimming curve. GDNVPO Maximum number of vertices in a single polygon. If there is no limit, then GDNOLI is returned. GDOVER 1 if overlay and underlay planes are shared, 0 if both can be used simultaneously. GDPATS 1 if 64x64 patterns are supported, 0 otherwise. (See defpat.) GDPSCM 1 if antialiased points are supported in the normal framebuffer in color map mode, 0 otherwise. (See pntsmo.) GDPSRG 1 if antialiased points are supported in RGB mode in all framebuffers that support RGB mode, 0 otherwise. (See pntsmo.) GDPOMO 1 if polymo is functional, 0 if it is not. GDPOSM 1 if antialiased polygons are supported in RGB mode in all framebuffers that support RGB mode, 0 otherwise. (See polysm.) GDPUPO 1 if the popup bitplanes can be allocated as color map bitplanes in the overlay or underlay framebuffers, 0 if they cannot. GDRSRC 1 if readso sources SRCAUT, SRCFRO, and SRCBAC are functional, 0 if they are not. GDRSZB 1 if readso(SRCZBU) is functional, 0 if it is not. GDSCRB 1 if scrbox is functional, 0 if it is not. GDSTYP Type of the currently selected screen. Returns GDSTWM if there is window management on the screen or GDSTNW if there isn't. There can be at most one window open on screens of the latter type. GDSTER 1 if setmon(STRREC) is functional, 0 if it is not. GDSTIW 1 if per-window stereo is functional, 0 if it is not. (See stereo.) GDSBLI GDSBPN GDSBPO 1 if subpixel positioned lines, points, and polygons (respectively) are supported in all framebuffers, 0 otherwise. (See subpix.) GDTEXT 1 if the textport routines are functional, 0 if they are not. Unlike most of the others, this inquiry is independent of the currently selected screen. (See textpo.) GDTXTR 1 if texture mapping routines are functional, 0 if they are not. (See texdf2.) GDTX3D 1 if 3D texture mapping routines are functional, 0 if they are not. (See texdf3.) GDTXDE 1 if TXDETA is functional, 0 if it is not. (See texdef.) GDTXLU 1 if texture lookup tables are functional, 0 if they are not. (See tlutdef.) GDTXSH 1 if TXSHAR is functional, 0 if it is not. (See texdef.) GDTIME Frequency of graphics timer events. GDTROD Maximum order of a trimming curve. GDWSYS Type of window system running on the machine. Returns GDWS4S if a windowing system is currently running or GDWSNO if there is no window system currently running. Unlike most of the others, this inquiry is independent of the currently selected screen. GDZDGM GDZDPX 1 if routines that render geometry and routines that render pixels (respectively) will do it into the z-buffer when zdraw is .TRUE., 0 if they do not. SEE ALSO gversi, scrnse NOTES This routine is available only in immediate mode. To inquire about the screen on which the current window is displayed, use the following sequence: integer*4 svscrn, dummy ... savescrn = scrnse(getwsc) val1 = getgde(inquiry1) val2 = getgde(inquiry2) ... dummy = scrnse(svscrn)