Initial import of the CDE 2.1.30 sources from the Open Group.
This commit is contained in:
Peter Howkins
306
cde/programs/dtudcfonted/libfal/include/servermd.h
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cde/programs/dtudcfonted/libfal/include/servermd.h
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/* $XConsortium: servermd.h /main/2 1996/04/08 15:58:29 cde-fuj $ */
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/***********************************************************
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
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and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the names of Digital or MIT not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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(c) Copyright 1995 FUJITSU LIMITED
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This is source code modified by FUJITSU LIMITED under the Joint
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Development Agreement for the CDEnext PST.
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This is unpublished proprietary source code of FUJITSU LIMITED
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******************************************************************/
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#ifndef SERVERMD_H
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#define SERVERMD_H 1
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/*
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* The vendor string identifies the vendor responsible for the
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* server executable.
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*/
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#ifndef VENDOR_STRING
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#define VENDOR_STRING "MIT X Consortium"
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#endif
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/*
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* The vendor release number identifies, for the purpose of submitting
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* traceable bug reports, the release number of software produced
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* by the vendor.
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*/
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#ifndef VENDOR_RELEASE
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#define VENDOR_RELEASE 4
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#endif
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/*
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* Machine dependent values:
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* GLYPHPADBYTES should be chosen with consideration for the space-time
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* trade-off. Padding to 0 bytes means that there is no wasted space
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* in the font bitmaps (both on disk and in memory), but that access of
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* the bitmaps will cause odd-address memory references. Padding to
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* 2 bytes would ensure even address memory references and would
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* be suitable for a 68010-class machine, but at the expense of wasted
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* space in the font bitmaps. Padding to 4 bytes would be good
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* for real 32 bit machines, etc. Be sure that you tell the font
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* compiler what kind of padding you want because its defines are
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* kept separate from this. See server/include/font.h for how
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* GLYPHPADBYTES is used.
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*
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* Along with this, you should choose an appropriate value for
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* GETLEFTBITS_ALIGNMENT, which is used in ddx/mfb/maskbits.h. This
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* constant choses what kind of memory references are guarenteed during
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* font access; either 1, 2 or 4, for byte, word or longword access,
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* respectively. For instance, if you have decided to to have
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* GLYPHPADBYTES == 4, then it is pointless for you to have a
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* GETLEFTBITS_ALIGNMENT > 1, because the padding of the fonts has already
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* guarenteed you that your fonts are longword aligned. On the other
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* hand, even if you have chosen GLYPHPADBYTES == 1 to save space, you may
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* also decide that the computing involved in aligning the pointer is more
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* costly than an odd-address access; you choose GETLEFTBITS_ALIGNMENT == 1.
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*
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* Next, choose the tuning parameters which are appropriate for your
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* hardware; these modify the behaviour of the raw frame buffer code
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* in ddx/mfb and ddx/cfb. Defining these incorrectly will not cause
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* the server to run incorrectly, but defining these correctly will
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* cause some noticeable speed improvements:
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*
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* AVOID_MEMORY_READ - (8-bit cfb only)
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* When stippling pixels on the screen (polytext and pushpixels),
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* don't read long words from the display and mask in the
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* appropriate values. Rather, perform multiple byte/short/long
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* writes as appropriate. This option uses many more instructions
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* but runs much faster when the destination is much slower than
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* the CPU and at least 1 level of write buffer is availible (2
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* is much better). Defined currently for SPARC and MIPS.
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*
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* FAST_CONSTANT_OFFSET_MODE - (cfb and mfb)
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* This define is used on machines which have no auto-increment
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* addressing mode, but do have an effectively free constant-offset
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* addressing mode. Currently defined for MIPS and SPARC, even though
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* I remember the cg6 as performing better without it (cg3 definitely
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* performs better with it).
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*
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* LARGE_INSTRUCTION_CACHE -
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* This define increases the number of times some loops are
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* unrolled. On 68020 machines (with 256 bytes of i-cache),
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* this define will slow execution down as instructions miss
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* the cache frequently. On machines with real i-caches, this
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* reduces loop overhead, causing a slight performance improvement.
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* Currently defined for MIPS and SPARC
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*
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* FAST_UNALIGNED_READS -
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* For machines with more memory bandwidth than CPU, this
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* define uses unaligned reads for 8-bit BitBLT instead of doing
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* aligned reads and combining the results with shifts and
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* logical-ors. Currently defined for 68020 and vax.
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* PLENTIFUL_REGISTERS -
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* For machines with > 20 registers. Currently used for
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* unrolling the text painting code a bit more. Currently
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* defined for MIPS.
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*/
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#ifdef vax
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#define IMAGE_BYTE_ORDER LSBFirst /* Values for the VAX only */
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#define BITMAP_BIT_ORDER LSBFirst
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#define GLYPHPADBYTES 1
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#define GETLEFTBITS_ALIGNMENT 4
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#define FAST_UNALIGNED_READS
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#endif /* vax */
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#ifdef __uxp__
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#define IMAGE_BYTE_ORDER MSBFirst
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#define BITMAP_BIT_ORDER MSBFirst
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#define AVOID_MEMORY_READ
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#define LARGE_INSTRUCTION_CACHE
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#define FAST_CONSTANT_OFFSET_MODE
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#define GLYPHPADBYTES 4
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#define GETLEFTBITS_ALIGNMENT 1
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#endif /* __uxp__ */
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#ifdef sun
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#if defined(sun386) || defined(sun5)
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# define IMAGE_BYTE_ORDER LSBFirst /* Values for the SUN only */
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# define BITMAP_BIT_ORDER LSBFirst
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#else
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# define IMAGE_BYTE_ORDER MSBFirst /* Values for the SUN only */
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# define BITMAP_BIT_ORDER MSBFirst
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#endif
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#ifdef sparc
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# define AVOID_MEMORY_READ
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# define LARGE_INSTRUCTION_CACHE
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# define FAST_CONSTANT_OFFSET_MODE
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#endif
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#ifdef mc68020
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#define FAST_UNALIGNED_READS
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#endif
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#define GLYPHPADBYTES 4
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#define GETLEFTBITS_ALIGNMENT 1
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#endif /* sun */
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#ifdef apollo
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#define IMAGE_BYTE_ORDER MSBFirst /* Values for the Apollo only*/
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#define BITMAP_BIT_ORDER MSBFirst
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#define GLYPHPADBYTES 2
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#define GETLEFTBITS_ALIGNMENT 4
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#endif /* apollo */
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#if defined(ibm032) || defined (ibm)
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#ifdef i386
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# define IMAGE_BYTE_ORDER LSBFirst /* Value for PS/2 only */
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#else
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# define IMAGE_BYTE_ORDER MSBFirst /* Values for the RT only*/
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#endif
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#define BITMAP_BIT_ORDER MSBFirst
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#define GLYPHPADBYTES 1
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#define GETLEFTBITS_ALIGNMENT 4
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/* ibm pcc doesn't understand pragmas. */
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#endif /* ibm */
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#ifdef hpux
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#define IMAGE_BYTE_ORDER MSBFirst /* Values for the HP only */
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#define BITMAP_BIT_ORDER MSBFirst
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#define GLYPHPADBYTES 2 /* to match product server */
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#define GETLEFTBITS_ALIGNMENT 1
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#endif /* hpux */
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#if defined(M4315) || defined(M4317) || defined(M4319) || defined(M4330)
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#define IMAGE_BYTE_ORDER MSBFirst /* Values for Pegasus only */
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#define BITMAP_BIT_ORDER MSBFirst
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#define GLYPHPADBYTES 4
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#define GETLEFTBITS_ALIGNMENT 1
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#define FAST_UNALIGNED_READS
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#endif /* tektronix */
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#ifdef macII
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#define IMAGE_BYTE_ORDER MSBFirst /* Values for the MacII only */
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#define BITMAP_BIT_ORDER MSBFirst
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#define GLYPHPADBYTES 4
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#define GETLEFTBITS_ALIGNMENT 1
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/* might want FAST_UNALIGNED_READS for frame buffers with < 1us latency */
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#endif /* macII */
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#ifdef mips
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#ifdef MIPSEL
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# define IMAGE_BYTE_ORDER LSBFirst /* Values for the PMAX only */
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# define BITMAP_BIT_ORDER LSBFirst
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# define GLYPHPADBYTES 4
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# define GETLEFTBITS_ALIGNMENT 1
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#else
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# define IMAGE_BYTE_ORDER MSBFirst /* Values for the MIPS only */
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# define BITMAP_BIT_ORDER MSBFirst
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# define GLYPHPADBYTES 4
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# define GETLEFTBITS_ALIGNMENT 1
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#endif
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#define AVOID_MEMORY_READ
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#define FAST_CONSTANT_OFFSET_MODE
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#define LARGE_INSTRUCTION_CACHE
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#define PLENTIFUL_REGISTERS
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#endif /* mips */
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#ifdef stellar
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#define IMAGE_BYTE_ORDER MSBFirst /* Values for the stellar only*/
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#define BITMAP_BIT_ORDER MSBFirst
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#define GLYPHPADBYTES 4
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#define GETLEFTBITS_ALIGNMENT 4
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/*
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* Use SysV random number generator.
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*/
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#define random rand
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#endif /* stellar */
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/* size of buffer to use with GetImage, measured in bytes. There's obviously
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* a trade-off between the amount of stack (or whatever ALLOCATE_LOCAL gives
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* you) used and the number of times the ddx routine has to be called.
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*
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* for a 1024 x 864 bit monochrome screen with a 32 bit word we get
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* 8192/4 words per buffer
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* (1024/32) = 32 words per scanline
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* 2048 words per buffer / 32 words per scanline = 64 scanlines per buffer
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* 864 scanlines / 64 scanlines = 14 buffers to draw a full screen
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*/
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#if defined(stellar)
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#define IMAGE_BUFSIZE (64*1024)
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#else
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#define IMAGE_BUFSIZE 8192
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#endif
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/* pad scanline to a longword */
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#if defined(ibm) && defined(i386)
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#define BITMAP_SCANLINE_UNIT 8
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#else
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#define BITMAP_SCANLINE_UNIT 32
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#endif
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#define BITMAP_SCANLINE_PAD 32
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#define LOG2_BITMAP_PAD 5
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#define LOG2_BYTES_PER_SCANLINE_PAD 2
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/*
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* This returns the number of padding units, for depth d and width w.
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* For bitmaps this can be calculated with the macros above.
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* Other depths require either grovelling over the formats field of the
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* screenInfo or hardwired constants.
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*/
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typedef struct _PaddingInfo {
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int padRoundUp; /* pixels per pad unit - 1 */
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int padPixelsLog2; /* log 2 (pixels per pad unit) */
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int padBytesLog2; /* log 2 (bytes per pad unit) */
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} PaddingInfo;
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extern PaddingInfo PixmapWidthPaddingInfo[];
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#define PixmapWidthInPadUnits(w, d) \
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(((w) + PixmapWidthPaddingInfo[d].padRoundUp) >> \
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PixmapWidthPaddingInfo[d].padPixelsLog2)
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/*
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* Return the number of bytes to which a scanline of the given
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* depth and width will be padded.
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*/
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#define PixmapBytePad(w, d) \
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(PixmapWidthInPadUnits(w, d) << PixmapWidthPaddingInfo[d].padBytesLog2)
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#endif /* SERVERMD_H */
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