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arti
d8d54bb990
The XIE path now runs end to end: XieCreateImage -> XieCreatePhoto ->
XiePutTile -> XieExport(photomap -> depth-1 pixmap) -> XCopyArea(pixmap ->
window), and the client's tile appears on screen at the client's own window
position, pixel-exact.
TWO FAULTS BEHIND THE LONG DEAD END
1. Device model (harness/mame/vt1200.cpp, opt-in VT1200_ACCEL=1). The
accelerator's output port 0x5600200 returns the pixel stream the firmware
pushed into the FIFO -- the firmware then stores it into the drawable itself
(file 0x125528: MOVE *B6,*B1 ; ADDK 0x10,B1). The FIFO read pointer was
never reset between transfers, so consecutive exports read stale words and
the same fill produced 759 then 516 set pixels. Reset m_fifo_in/out on the
data-register write; the export is now deterministic.
2. Measurement, not the device.
- dwt/screenshot.py without --real reads 1024x1024 at a 128-byte row stride,
but the VR319 default programs 1280x1024 at a 2048-bit (256-byte) pitch.
That is the "shifted" picture; --real is the correct read.
- The earlier "0 differing bytes over 128 KiB" VRAM comparison stepped peek
by 1024 *bit* addresses, so it scanned rows 0..63 only -- never the window
at rows 200..263. Over the real raster the white/black diff is 576 bytes
spanning exactly those rows.
- New instrument: decclient does a server-side XGetImage readback of the
pixmap and window and counts set pixels. That separated "the server never
drew it" from "the framebuffer view is wrong".
EVIDENCE (reproduced twice, the second time from a fresh machine)
no export vs 0xFF : 4096 / 4096 pixels differ
no export vs 0x00 : 0 / 4096 (the window background is black)
0xFF vs 0x00 : 4096 / 4096
0xAA vs 0x0F : 2048 / 4096 (the two stripe phases)
Tile byte 0xAA reproduces as 1-pixel vertical stripes, 0x0F as 4-pixel, with
no shear -- so the placement is right and the pixels are the client's.
Contents: xie/ holds DEC XIE 2.3 headers, 84 man pages and complete
client+server source; a libXie.a and decclient built from DEC's own code; the
XIE probes; and evidence/ with every measurement, including explicit
retractions of the earlier wrong readings (VRAM_IDENTICAL_FOR_BOTH_FILLS and
friends). xie/evidence/XIE_IMAGE_DISPLAYED.md is the report; frames are in
xie/evidence/png/.
The accelerator model stays opt-in: it answers the status poll and relays the
pixel stream, but performs no compositing, so it is a stand-in and the verified
default configuration is unchanged (a no-env run still parks in the level-0
diagnostics menu at PC=3FDCE400).
182 lines
6.1 KiB
C
182 lines
6.1 KiB
C
/*
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* *****************************************************************
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* * *
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* * Copyright (c) Digital Equipment Corporation, 1991, 1994 *
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* * *
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* * All Rights Reserved. Unpublished rights reserved under *
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* * the copyright laws of the United States. *
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* * *
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* * The software contained on this media is proprietary to *
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* * and embodies the confidential technology of Digital *
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* * Equipment Corporation. Possession, use, duplication or *
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* * dissemination of the software and media is authorized only *
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* * pursuant to a valid written license from Digital Equipment *
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* * Corporation. *
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* * *
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* * RESTRICTED RIGHTS LEGEND Use, duplication, or disclosure *
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* * by the U.S. Government is subject to restrictions as set *
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* * forth in Subparagraph (c)(1)(ii) of DFARS 252.227-7013, *
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* * or in FAR 52.227-19, as applicable. *
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* * *
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* *****************************************************************
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*/
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/*
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* HISTORY
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*/
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/* BuildSystemHeader added automatically */
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/* $Header: /alphabits/u3/x11/ode/rcs/x11/src/extensions/include/xtrapddmi.h,v 1.1.2.3 92/04/27 12:36:37 Leela_Obilichetti Exp $ */
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#ifndef __XTRAPDDMI__
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#define __XTRAPDDMI__
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/*****************************************************************************
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Copyright 1987, 1988, 1989, 1990, 1991 by Digital Equipment Corp., Maynard, MA
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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 name of Digital 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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*****************************************************************************/
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/*
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*
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* CONTRIBUTORS:
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*
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* Dick Annicchiarico
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* Robert Chesler
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* Dan Coutu
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* Gene Durso
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* Marc Evans
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* Alan Jamison
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* Mark Henry
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* Ken Miller
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*
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* DESCRIPTION:
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* This header file is used by the XTrap server extension only
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* (not used by clients or the XTrap Toolkit). Information
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* contained herein should *not* be visible to clients (xtrapdi.h
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* is used for this). The name is historical.
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*/
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#include "X.h"
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#include "bits.h"
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#include "dix.h"
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#ifndef MIN
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# define MIN(a,b) ((a) < (b) ? (a) : (b))
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#endif
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#ifndef MAX
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# define MAX(a,b) ((a) > (b) ? (a) : (b))
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#endif
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#define XETrapNumEvents 1L /* constants used for AddExtension */
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/* Other constants used within the extension code */
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#define XETrapMinRepSize 32L /* Minimum number of longs */
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/* This structure will be globally declared to provide storage to hold
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* the various extension wide configuration information. Allocated on
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* a per-client basis.
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*/
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typedef struct
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{
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ClientPtr client; /* Multi-client support and error handling */
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xXTrapGetCurReply cur; /* Struct of Miscellaneous state info */
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xXTrapGetStatsReply *stats; /* Pointer to stat's, malloc'd if requested */
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CARD32 last_input_time B32; /* last timestamp from input event */
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CARD16 protocol B16; /* current communication protocol */
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} XETrapEnv;
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#define XETrapSetHeaderEvent(phdr) ((phdr)->type = 0x1L)
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#define XETrapSetHeaderRequest(phdr) ((phdr)->type = 0x2L)
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#define XETrapSetHeaderSpecial(phdr) ((phdr)->type = 0x3L)
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#define XETrapSetHeaderCursor(phdr) ((phdr)->type = 0x4L)
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#define XETrapSetHeaderReply(phdr) ((phdr)->type = 0x5L)
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#ifdef X11R3
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/* Swapping macros not visible in X11 Release 3 */
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#define LengthRestB(stuff) \
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(((unsigned long)stuff->length << 2) - sizeof(*stuff))
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#define LengthRestS(stuff) \
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(((unsigned long)stuff->length << 1) - (sizeof(*stuff) >> 1))
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#define LengthRestL(stuff) \
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((unsigned long)stuff->length - (sizeof(*stuff) >> 2))
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#define SwapRestS(stuff) \
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SwapShorts((short *)(stuff + 1), LengthRestS(stuff))
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#define SwapRestL(stuff) \
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SwapLongs((long *)(stuff + 1), LengthRestL(stuff))
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/* copy long from src to dst byteswapping on the way */
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#ifndef cpswapl
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#define cpswapl(Src, Dest) \
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{ \
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char *pSrc = (char *)&(Src); \
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char *pDest = (char *)&(Dest); \
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pDest[0] = pSrc[3]; \
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pDest[1] = pSrc[2]; \
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pDest[2] = pSrc[1]; \
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pDest[3] = pSrc[0]; \
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}
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#endif
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/* copy short from src to dst byteswapping on the way */
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#ifndef cpswaps
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#define cpswaps(Src, Dest)\
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{ \
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char *pSrc = ((char *)&(Src)); \
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char *pDest = ((char *)&(Dest)); \
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pDest[1] = pSrc[0]; \
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pDest[0] = pSrc[1]; \
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}
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#endif
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#endif /* X11R3 */
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#ifndef vaxc
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#define globaldef
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#define globalref extern
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#endif
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/* Extension platform identifier (conditionally defined) */
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#ifdef osf1
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# define XETrapPlatform PF_DECOSF1
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#endif
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#ifdef ultrix
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# define XETrapPlatform PF_DECUltrix
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#endif
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#ifdef vms
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#ifdef VAXELN
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# define XETrapPlatform PF_DECELN
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#else
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# define XETrapPlatform PF_DECVMS
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#endif
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#endif
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#ifdef VT1000
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# define XETrapPlatform PF_DECVT1000
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#endif
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#ifdef VXT
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# define XETrapPlatform PF_DECXTerm
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#endif
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#ifdef PC
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# define XETrapPlatform PF_IBMAT
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#endif
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#ifdef sun
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# define XETrapPlatform PF_SunSparc
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#endif
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#ifndef XETrapPlatform
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# define XETrapPlatform PF_Other
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#endif /* XETrapPlatform */
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#endif /* __XTRAPDDMI__ */
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