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).
159 lines
6.6 KiB
C
159 lines
6.6 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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**************************************************************************
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** DIGITAL EQUIPMENT CORPORATION **
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** CONFIDENTIAL **
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** NOT FOR MODIFICATION OR REDISTRIBUTION IN ANY MANNER WHATSOEVER **
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**************************************************************************
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*/
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#ifndef __XTRAPLIB__
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#define __XTRAPLIB__ "@(#)xtraplib.h 1.15 - 90/09/18 "
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/* RCSID = $Header: /alphabits/u3/x11/ode/rcs/x11/src/extensions/include/xtraplib.h,v 1.1.2.4 92/06/12 09:33:20 Jim_Ludwig Exp $" */
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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 describes all the structures/constants required
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* for interfacing with the client toolkit *except* the common
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* client/extension definitions in xtrapdi.h. Namely, *no* extension-
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* only information or client/extension information can be found here.
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*/
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#ifdef SMT
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#define NEED_EVENTS
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#define NEED_REPLIES
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#endif
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#include "Xlib.h"
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#include "Intrinsic.h"
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#include "xtrapdi.h"
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#include "bits.h"
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#include "xemacros.h"
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typedef struct /* Callback structure */
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{
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void_function func;
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BYTE *data;
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} XETrapCB;
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/* Data structure for setting trap context */
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typedef struct
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{
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CARD8 tc_flags[2L]; /* Toolkit-side specific flags */
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XETrapCfg v; /* XTrap configuration values */
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XETrapCB *req_cb; /* Pointer to Request Callbacks */
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XETrapCB *evt_cb; /* Pointer to Event Callbacks (starting at 2) */
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CARD32 last_time B32; /* Last (delta) timestamp */
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} XETCValues;
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/* bits 0 thru 6 are formerly "families" (now obsolete) */
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#define XETCDeltaTimes 7
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#define XETCTrapActive 8
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/* bits 9 thru 15 are reserved for future expansion */
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/* Values bit masks (used when determining what's dirty */
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#define TCStatistics (1L<<0L)
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#define TCRequests (1L<<1L)
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#define TCEvents (1L<<2L)
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#define TCMaxPacket (1L<<3L)
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#define TCCmdKey (1L<<4L)
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#define TCTimeStamps (1L<<5L)
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#define TCWinXY (1L<<6L)
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#define TCXInput (1L<<7L)
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#define TCReqCBs (1L<<8L)
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#define TCEvtCBs (1L<<9L)
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#define TCCursor (1L<<10L)
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#define TCColorReplies (1L<<11L)
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#define TCGrabServer (1L<<12L)
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/* Trap Context structure for maintaining XTrap State for client */
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typedef struct _XETC
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{
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struct _XETC *next; /* Ptr to next linked-listed TC */
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Display *dpy; /* Display ptr of current TC */
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INT32 eventBase /*B32*/; /* First event value */
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INT32 errorBase /*B32*/; /* First error value */
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INT32 extOpcode /*B32*/; /* Major opcode of the extension */
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BYTE *xbuff; /* Pointer to buffer for XLib Communications */
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CARD16 xmax_size /*B16*/; /* Max Size of a request */
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XExtData *ext_data; /* hook for extension to hang data */
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/*
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* The following are initialized with the client-side version number
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* However, when either a GetAvailable or GetVersion reply is received,
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* these values are updated with the *oldest* version numbers.
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*/
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CARD16 release /*B16*/; /* The extension release number */
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CARD16 version /*B16*/; /* The xtrap extension version number */
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CARD16 revision /*B16*/; /* The xtrap extension revision number */
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CARD16 protocol /*B16*/; /* The xtrap extension protocol number */
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unsigned dirty /*B32*/; /* cache dirty bits */
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XETCValues values; /* shadow structure of values */
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Boolean (*eventFunc[XETrapNumberEvents])();
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} XETC;
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/* This is the representation we use in the library code for XLib transport */
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typedef struct {
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int type;
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unsigned long serial;
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Bool synthetic;
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Display *display;
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int detail;
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unsigned long idx;
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unsigned char data[sz_EventData];
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} XETrapDataEvent;
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#endif /* __XTRAPLIB__ */
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