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).
302 lines
9.8 KiB
C
302 lines
9.8 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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* $XConsortium: multibufst.h,v 1.7 91/01/05 16:32:49 rws Exp $
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*
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* Copyright 1989 Massachusetts Institute of Technology
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of M.I.T. not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. M.I.T. makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* M.I.T. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL M.I.T.
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* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _MULTIBUFST_H_
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#define _MULTIBUFST_H_
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/*
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* Protocol requests constants and alignment values
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* These would really be in Multi-Buffering's X.h and Xproto.h equivalents
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*/
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#include "multibuf.h"
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#include <X11/Xmd.h> /* for Window & VisualId defines */
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/* Added to match X11/Xproto.h */
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#define Window CARD32
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#define Drawable CARD32
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#define VisualID CARD32
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#if defined(__STDC__) && !defined(UNIXCPP)
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#define MbufGetReq(name,req,info) GetReq (name, req); \
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req->reqType = info->codes->major_opcode; \
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req->mbufReqType = X_##name;
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#else
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#define MbufGetReq(name,req,info) GetReq (name, req); \
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req->reqType = info->codes->major_opcode; \
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req->mbufReqType = X_/**/name;
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#endif
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#define Multibuffer CARD32
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typedef struct {
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CARD32 visualID B32; /* associated visual */
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CARD16 maxBuffers B16; /* maximum supported buffers */
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CARD8 depth; /* depth of visual (redundant) */
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CARD8 unused;
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} xMbufBufferInfo;
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#define sz_xMbufBufferInfo 8
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typedef struct {
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BYTE type;
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BYTE unused;
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CARD16 sequenceNumber B16;
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CARD32 buffer B32; /* affected buffer */
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BYTE state; /* current status */
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CARD8 unused1;
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CARD16 unused2 B16;
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CARD32 unused3 B32;
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CARD32 unused4 B32;
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CARD32 unused5 B32;
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CARD32 unused6 B32;
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CARD32 unused7 B32;
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} xMbufClobberNotifyEvent;
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typedef struct {
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BYTE type;
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BYTE unused;
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CARD16 sequenceNumber B16;
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CARD32 buffer B32; /* affected buffer */
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CARD32 timeStamp B32; /* update time */
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CARD32 unused1 B32;
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CARD32 unused2 B32;
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CARD32 unused3 B32;
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CARD32 unused4 B32;
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CARD32 unused5 B32;
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CARD32 unused6 B32;
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} xMbufUpdateNotifyEvent;
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typedef struct {
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CARD8 reqType; /* always codes->major_opcode */
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CARD8 mbufReqType; /* always X_MbufGetBufferVersion */
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CARD16 length B16;
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} xMbufGetBufferVersionReq;
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#define sz_xMbufGetBufferVersionReq 4
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typedef struct {
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BYTE type; /* X_Reply */
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CARD8 unused; /* not used */
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CARD16 sequenceNumber B16;
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CARD32 length B32;
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CARD8 majorVersion; /* major version of Multi-Buffering protocol */
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CARD8 minorVersion; /* minor version of Multi-Buffering protocol */
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CARD16 pad1 B16;
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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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CARD32 pad6 B32;
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} xMbufGetBufferVersionReply;
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#define sz_xMbufGetBufferVersionReply 32
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typedef struct {
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CARD8 reqType; /* always codes->major_opcode */
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CARD8 mbufReqType; /* always X_MbufCreateImageBuffers */
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CARD16 length B16;
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CARD32 window B32; /* associated window */
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CARD8 updateAction; /* action at update */
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CARD8 updateHint; /* hint as to frequency of updates */
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CARD16 unused;
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} xMbufCreateImageBuffersReq; /* followed by buffer ids */
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#define sz_xMbufCreateImageBuffersReq 12
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typedef struct {
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BYTE type; /* X_Reply */
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CARD8 unused; /* not used */
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CARD16 sequenceNumber B16;
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CARD32 length B32;
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CARD16 numberBuffer B16; /* number successfully allocated */
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CARD16 unused1 B16;
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CARD32 unused2 B32;
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CARD32 unused3 B32;
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CARD32 unused4 B32;
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CARD32 unused5 B32;
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CARD32 unused6 B32;
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} xMbufCreateImageBuffersReply;
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#define sz_xMbufCreateImageBuffersReply 32
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typedef struct {
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CARD8 reqType; /* always codes->major_opcode */
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CARD8 mbufReqType; /* always X_MbufDestroyImageBuffers */
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CARD16 length B16;
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CARD32 window B32; /* associated window */
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} xMbufDestroyImageBuffersReq;
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#define sz_xMbufDestroyImageBuffersReq 8
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typedef struct {
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CARD8 reqType; /* always codes->major_opcode */
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CARD8 mbufReqType; /* always X_MbufDisplayImageBuffers */
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CARD16 length B16;
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CARD16 minDelay B16; /* minimum time between last update and now */
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CARD16 maxDelay B16; /* maximum time between last update and now */
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} xMbufDisplayImageBuffersReq; /* followed by list of buffers */
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#define sz_xMbufDisplayImageBuffersReq 8
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typedef struct {
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CARD8 reqType; /* always codes->major_opcode */
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CARD8 mbufReqType; /* always X_MbufSetMBufferAttributes */
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CARD16 length B16;
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CARD32 window B32; /* associated window */
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CARD32 valueMask B32; /* modified entries */
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} xMbufSetMBufferAttributesReq; /* followed by values */
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#define sz_xMbufSetMBufferAttributesReq 12
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typedef struct {
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CARD8 reqType; /* always codes->major_opcode */
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CARD8 mbufReqType; /* always X_MbufGetMBufferAttributes */
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CARD16 length B16;
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CARD32 window B32; /* associated window */
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} xMbufGetMBufferAttributesReq;
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#define sz_xMbufGetMBufferAttributesReq 8
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typedef struct {
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BYTE type; /* X_Reply */
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CARD8 unused; /* not used */
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CARD16 sequenceNumber B16;
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CARD32 length B32;
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CARD16 displayedBuffer B16; /* currently visible buffer */
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CARD8 updateAction;
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CARD8 updateHint;
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CARD8 windowMode;
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CARD8 unused0;
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CARD16 unused1 B16;
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CARD32 unused2 B32;
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CARD32 unused3 B32;
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CARD32 unused4 B32;
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CARD32 unused5 B32;
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} xMbufGetMBufferAttributesReply;
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#define sz_xMbufGetMBufferAttributesReply 32
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typedef struct {
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CARD8 reqType; /* always codes->major_opcode */
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CARD8 mbufReqType; /* always X_MbufSetBufferAttributes */
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CARD16 length B16;
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CARD32 buffer B32;
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CARD32 valueMask B32;
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} xMbufSetBufferAttributesReq; /* followed by values */
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#define sz_xMbufSetBufferAttributesReq 12
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typedef struct {
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CARD8 reqType; /* always codes->major_opcode */
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CARD8 mbufReqType; /* always X_MbufGetBufferAttributes */
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CARD16 length B16;
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CARD32 buffer B32;
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} xMbufGetBufferAttributesReq;
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#define sz_xMbufGetBufferAttributesReq 8
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typedef struct {
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BYTE type; /* X_Reply */
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CARD8 unused; /* not used */
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CARD16 sequenceNumber B16;
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CARD32 length B32;
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CARD32 window B32;
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CARD32 eventMask B32;
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CARD16 bufferIndex B16;
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CARD8 side;
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CARD8 unused0;
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CARD32 unused1 B32;
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CARD32 unused2 B32;
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CARD32 unused3 B32;
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} xMbufGetBufferAttributesReply;
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#define sz_xMbufGetBufferAttributesReply 32
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typedef struct {
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CARD8 reqType; /* always codes->major_opcode */
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CARD8 mbufReqType; /* always X_MbufGetBufferInfo */
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CARD16 length B16;
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Drawable drawable B32;
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} xMbufGetBufferInfoReq;
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#define sz_xMbufGetBufferInfoReq 8
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typedef struct {
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BYTE type; /* X_Reply */
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CARD8 unused; /* not used */
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CARD16 sequenceNumber B16;
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CARD32 length B32;
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CARD16 normalInfo B16;
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CARD16 stereoInfo B16;
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CARD32 unused1 B32;
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CARD32 unused2 B32;
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CARD32 unused3 B32;
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CARD32 unused4 B32;
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CARD32 unused5 B32;
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} xMbufGetBufferInfoReply; /* followed by buffer infos */
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#define sz_xMbufGetBufferInfoReply 32
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typedef struct {
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CARD8 reqType; /* always codes->major_opcode */
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CARD8 mbufReqType; /* always X_MbufCreateStereoWindow */
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CARD16 length B16;
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CARD8 unused0;
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CARD8 unused1;
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CARD8 unused2;
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CARD8 depth;
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Window wid B32;
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Window parent B32;
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Multibuffer left B32; /* associated buffers */
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Multibuffer right B32;
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INT16 x B16;
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INT16 y B16;
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CARD16 width B16;
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CARD16 height B16;
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CARD16 borderWidth B16;
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CARD16 class B16;
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VisualID visual B32;
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CARD32 mask B32;
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} xMbufCreateStereoWindowReq; /* followed by value list */
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#define sz_xMbufCreateStereoWindowReq 44
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#undef Multibuffer
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#undef Window CARD32
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#undef Drawable CARD32
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#undef VisualID CARD32
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#endif /* _MULTIBUFST_H_ */
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