forked from arti/vt1200
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).
124 lines
4.4 KiB
C
124 lines
4.4 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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/***********************************************************************
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Copyright 1990 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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************************************************************************/
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/*
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**++
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** FACILITY:
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**
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** common struct
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**
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** ABSTRACT:
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**
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** It contains protocol definition for the keyboard management extension.
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** (KME).
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** The KME extension name string and all relevant protocol definition for
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** I18N keyboard mode-switching are defined here.
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**
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** ENVIRONMENT:
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**
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** Ultrix
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**
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** MODIFICATION HISTORY:
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**
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**--
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**/
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#ifndef XKMEPROTO_INCLUDE_H
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#define XKMEPROTO_INCLUDE_H
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#define KMEXTENSIONNAME "Keyboard-Management-Extension"
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/* constant returned by XKME routines indicating that the target server
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* version does not honor the request */
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#define KMEBADREQUEST 2
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/* Opcodes to set and reset keyboard mode-switch */
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#define X_KMEDoKBModeSwitch 10
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/* command mode constants for switching the keyboard mode */
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#define LockDownModeSwitch 1
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#define UnlockModeSwitch 2
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/* reply constants */
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#define KBModeSwitchSuccess 0 /* kb mode successfully switched */
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#define KBModeSwitchFailure 1 /* kb mode failed to switch */
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#define KBModeSwitchInvalidCmd 2 /* invalid kb mode-switch command */
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#define KBModeSwitchNoop 3 /* Keyboard is already in the request mode*/
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/*
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* X_KMEDoKBModeSwitch request packet def
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*/
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typedef struct {
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CARD8 reqType;
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CARD8 minor_opcode;
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CARD16 length B16;
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CARD32 mode B32; /* LockDownModeSwitch or UnlockModeSwitch */
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} xKMEDoKBModeSwitchReq;
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/*
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* X_KMEDoKBModeSwitch reply packet definition
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*/
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typedef struct {
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BYTE type;
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BYTE data1;
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CARD16 sequenceNumber B16;
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CARD32 length B32;
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CARD32 status B32; /* 0 = SUCCESS, 1 = FAILURE */
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CARD32 pad1 B32;
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CARD32 pad2 B32;
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CARD32 pad3 B32;
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CARD32 pad4 B32;
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CARD32 pad5 B32;
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}xKMEDoKBModeSwitchRep;
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#define sz_xKMEDoKBModeSwitchReq (sizeof(xKMEDoKBModeSwitchReq))
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#define sz_xKMEDoKBModeSwitchRep (sizeof(xKMEDoKBModeSwitchRep))
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#endif /* XKMEPROTO_INCLUDE_H */
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