mirror of
https://git.k-space.ee/arti/vt1200.git
synced 2026-11-03 12:33:16 +02:00
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).
306 lines
8.8 KiB
C
306 lines
8.8 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: multibuf.h,v 1.15 91/07/12 10:20:42 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 _MULTIBUF_H_
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#define _MULTIBUF_H_
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#include <X11/Xfuncproto.h>
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#define MULTIBUFFER_PROTOCOL_NAME "Multi-Buffering"
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#define MULTIBUFFER_MAJOR_VERSION 1 /* current version numbers */
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#define MULTIBUFFER_MINOR_VERSION 0
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#define X_MbufGetBufferVersion 0
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#define X_MbufCreateImageBuffers 1
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#define X_MbufDestroyImageBuffers 2
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#define X_MbufDisplayImageBuffers 3
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#define X_MbufSetMBufferAttributes 4
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#define X_MbufGetMBufferAttributes 5
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#define X_MbufSetBufferAttributes 6
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#define X_MbufGetBufferAttributes 7
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#define X_MbufGetBufferInfo 8
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#define X_MbufCreateStereoWindow 9
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/*
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* update_action field
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*/
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#define MultibufferUpdateActionUndefined 0
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#define MultibufferUpdateActionBackground 1
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#define MultibufferUpdateActionUntouched 2
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#define MultibufferUpdateActionCopied 3
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/*
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* update_hint field
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*/
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#define MultibufferUpdateHintFrequent 0
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#define MultibufferUpdateHintIntermittent 1
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#define MultibufferUpdateHintStatic 2
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/*
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* valuemask fields
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*/
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#define MultibufferWindowUpdateHint (1L << 0)
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#define MultibufferBufferEventMask (1L << 0)
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/*
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* mono vs. stereo and left vs. right
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*/
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#define MultibufferModeMono 0
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#define MultibufferModeStereo 1
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#define MultibufferSideMono 0
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#define MultibufferSideLeft 1
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#define MultibufferSideRight 2
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/*
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* clobber state
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*/
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#define MultibufferUnclobbered 0
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#define MultibufferPartiallyClobbered 1
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#define MultibufferFullyClobbered 2
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/*
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* event stuff
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*/
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#define MultibufferClobberNotifyMask 0x02000000
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#define MultibufferUpdateNotifyMask 0x04000000
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#define MultibufferClobberNotify 0
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#define MultibufferUpdateNotify 1
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#define MultibufferNumberEvents (MultibufferUpdateNotify + 1)
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#define MultibufferBadBuffer 0
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#define MultibufferNumberErrors (MultibufferBadBuffer + 1)
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#ifndef _MULTIBUF_SERVER_
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/*
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* Extra definitions that will only be needed in the client
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*/
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typedef XID Multibuffer;
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typedef struct {
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int type; /* of event */
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unsigned long serial; /* # of last request processed by server */
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int send_event; /* true if this came frome a SendEvent request */
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Display *display; /* Display the event was read from */
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Multibuffer buffer; /* buffer of event */
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int state; /* see Clobbered constants above */
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} XmbufClobberNotifyEvent;
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typedef struct {
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int type; /* of event */
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unsigned long serial; /* # of last request processed by server */
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int send_event; /* true if this came frome a SendEvent request */
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Display *display; /* Display the event was read from */
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Multibuffer buffer; /* buffer of event */
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} XmbufUpdateNotifyEvent;
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/*
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* per-window attributes that can be got
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*/
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typedef struct {
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int displayed_index; /* which buffer is being displayed */
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int update_action; /* Undefined, Background, Untouched, Copied */
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int update_hint; /* Frequent, Intermittent, Static */
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int window_mode; /* Mono, Stereo */
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int nbuffers; /* Number of buffers */
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Multibuffer *buffers; /* Buffers */
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} XmbufWindowAttributes;
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/*
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* per-window attributes that can be set
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*/
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typedef struct {
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int update_hint; /* Frequent, Intermittent, Static */
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} XmbufSetWindowAttributes;
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/*
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* per-buffer attributes that can be got
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*/
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typedef struct {
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Window window; /* which window this belongs to */
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unsigned long event_mask; /* events that have been selected */
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int buffer_index; /* which buffer is this */
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int side; /* Mono, Left, Right */
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} XmbufBufferAttributes;
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/*
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* per-buffer attributes that can be set
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*/
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typedef struct {
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unsigned long event_mask; /* events that have been selected */
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} XmbufSetBufferAttributes;
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/*
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* per-screen buffer info (there will be lists of them)
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*/
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typedef struct {
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VisualID visualid; /* visual usuable at this depth */
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int max_buffers; /* most buffers for this visual */
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int depth; /* depth of buffers to be created */
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} XmbufBufferInfo;
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_XFUNCPROTOBEGIN
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extern Bool XmbufQueryExtension(
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#if NeedFunctionPrototypes
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Display* /* dpy */,
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int* /* event_base_return */,
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int* /* error_base_return */
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#endif
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);
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extern Status XmbufGetVersion(
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#if NeedFunctionPrototypes
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Display* /* dpy */,
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int* /* major_version_return */,
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int* /* minor_version_return */
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#endif
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);
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extern int XmbufCreateBuffers(
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#if NeedFunctionPrototypes
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Display* /* dpy */,
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Window /* w */,
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int /* count */,
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int /* update_action */,
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int /* update_hint */,
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Multibuffer* /* buffers */
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#endif
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);
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extern void XmbufDestroyBuffers(
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#if NeedFunctionPrototypes
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Display* /* dpy */,
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Window /* window */
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#endif
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);
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extern void XmbufDisplayBuffers(
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#if NeedFunctionPrototypes
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Display* /* dpy */,
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int /* count */,
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Multibuffer* /* buffers */,
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int /* min_delay */,
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int /* max_delay */
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#endif
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);
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extern Status XmbufGetWindowAttributes(
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#if NeedFunctionPrototypes
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Display* /* dpy */,
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Window /* w */,
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XmbufWindowAttributes* /* attr */
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#endif
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);
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extern void XmbufChangeWindowAttributes(
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#if NeedFunctionPrototypes
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Display* /* dpy */,
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Window /* w */,
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unsigned long /* valuemask */,
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XmbufSetWindowAttributes* /* attr */
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#endif
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);
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extern Status XmbufGetBufferAttributes(
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#if NeedFunctionPrototypes
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Display* /* dpy */,
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Multibuffer /* b */,
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XmbufBufferAttributes* /* attr */
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#endif
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);
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extern void XmbufChangeBufferAttributes(
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#if NeedFunctionPrototypes
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Display* /* dpy */,
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Multibuffer /* b */,
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unsigned long /* valuemask */,
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XmbufSetBufferAttributes* /* attr */
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#endif
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);
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extern Status XmbufGetScreenInfo(
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#if NeedFunctionPrototypes
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Display* /* dpy */,
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Drawable /* d */,
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int* /* nmono_return */,
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XmbufBufferInfo** /* mono_info_return */,
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int* /* nstereo_return */,
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XmbufBufferInfo** /* stereo_info_return */
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#endif
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);
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extern Window XmbufCreateStereoWindow(
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#if NeedFunctionPrototypes
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Display* /* dpy */,
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Window /* parent */,
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int /* x */,
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int /* y */,
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unsigned int /* width */,
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unsigned int /* height */,
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unsigned int /* border_width */,
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int /* depth */,
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unsigned int /* class */,
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Visual* /* visual */,
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unsigned long /* valuemask */,
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XSetWindowAttributes* /* attr */,
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Multibuffer* /* leftp */,
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Multibuffer* /* rightp */
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#endif
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);
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_XFUNCPROTOEND
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#endif /* _MULTIBUF_SERVER_ */
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#endif /* _MULTIBUF_H_ */
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