497 lines
12 KiB
C
497 lines
12 KiB
C
/*
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* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
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* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice including the dates of first publication and
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* either this permission notice or a reference to
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* http://oss.sgi.com/projects/FreeB/
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* shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of Silicon Graphics, Inc.
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* shall not be used in advertising or otherwise to promote the sale, use or
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* other dealings in this Software without prior written authorization from
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* Silicon Graphics, Inc.
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*/
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#ifdef HAVE_DMX_CONFIG_H
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#include <dmx-config.h>
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#endif
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#include "dmx.h"
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#include "glxserver.h"
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#include <windowstr.h>
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#include <propertyst.h>
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#include <os.h>
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#include "g_disptab.h"
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#include "glxutil.h"
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#include "glxext.h"
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#include "glxvisuals.h"
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#include "micmap.h"
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#include "glxswap.h"
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/*
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** Stubs to satisfy miinitext.c references.
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*/
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typedef int __GLXprovider;
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__GLXprovider __glXDRISWRastProvider;
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void GlxPushProvider(__GLXprovider *provider) { }
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/*
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** Forward declarations.
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*/
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static int __glXSwapDispatch(ClientPtr);
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static int __glXDispatch(ClientPtr);
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/*
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** Called when the extension is reset.
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*/
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static void ResetExtension(ExtensionEntry* extEntry)
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{
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__glXFlushContextCache();
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__glXScreenReset();
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SwapBarrierReset();
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}
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/*
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** Initialize the per-client context storage.
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*/
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static void ResetClientState(int clientIndex)
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{
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__GLXclientState *cl = __glXClients[clientIndex];
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Display **keep_be_displays;
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int i;
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free(cl->returnBuf);
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free(cl->currentContexts);
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free(cl->currentDrawables);
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free(cl->largeCmdBuf);
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for (i=0; i< screenInfo.numScreens; i++) {
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if (cl->be_displays[i])
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XCloseDisplay( cl->be_displays[i] );
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}
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keep_be_displays = cl->be_displays;
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memset(cl, 0, sizeof(__GLXclientState));
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cl->be_displays = keep_be_displays;
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/*
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** By default, assume that the client supports
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** GLX major version 1 minor version 0 protocol.
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*/
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cl->GLClientmajorVersion = 1;
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cl->GLClientminorVersion = 0;
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free(cl->GLClientextensions);
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memset(cl->be_displays, 0, screenInfo.numScreens * sizeof(Display *));
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}
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/*
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** This procedure is called when the client who created the context goes
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** away OR when glXDestroyContext is called. In either case, all we do is
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** flag that the ID is no longer valid, and (maybe) free the context.
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** use.
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*/
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static int ContextGone(__GLXcontext* cx, XID id)
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{
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cx->idExists = GL_FALSE;
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if (!cx->isCurrent) {
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__glXFreeContext(cx);
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}
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return True;
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}
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/*
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** Free a client's state.
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*/
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static int ClientGone(int clientIndex, XID id)
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{
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__GLXcontext *cx;
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__GLXclientState *cl = __glXClients[clientIndex];
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int i;
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if (cl) {
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/*
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** Free all the contexts that are current for this client.
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*/
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for (i=0; i < cl->numCurrentContexts; i++) {
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cx = cl->currentContexts[i];
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if (cx) {
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cx->isCurrent = GL_FALSE;
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if (!cx->idExists) {
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__glXFreeContext(cx);
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}
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}
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}
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/*
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** Re-initialize the client state structure. Don't free it because
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** we'll probably get another client with this index and use the struct
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** again. There is a maximum of MAXCLIENTS of these structures.
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*/
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ResetClientState(clientIndex);
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}
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return True;
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}
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/*
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** Free a GLX Pixmap.
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*/
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void __glXFreeGLXPixmap( __GLXpixmap *pGlxPixmap )
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{
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if (!pGlxPixmap->idExists &&
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!pGlxPixmap->refcnt) {
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PixmapPtr pPixmap = (PixmapPtr) pGlxPixmap->pDraw;
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/*
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** The DestroyPixmap routine should decrement the refcount and free
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** only if it's zero.
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*/
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(*pGlxPixmap->pScreen->DestroyPixmap)(pPixmap);
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free(pGlxPixmap->be_xids);
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free(pGlxPixmap);
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}
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}
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static int PixmapGone(__GLXpixmap *pGlxPixmap, XID id)
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{
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pGlxPixmap->idExists = False;
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__glXFreeGLXPixmap( pGlxPixmap );
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return True;
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}
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void __glXFreeGLXWindow(__glXWindow *pGlxWindow)
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{
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if (!pGlxWindow->idExists && !pGlxWindow->refcnt) {
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WindowPtr pWindow = (WindowPtr) pGlxWindow->pDraw;
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WindowPtr ret;
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dixLookupResourceByType((pointer) &ret,
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pWindow->drawable.id, RT_WINDOW,
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NullClient, DixUnknownAccess);
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if (ret == pWindow) {
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(*pGlxWindow->pScreen->DestroyWindow)(pWindow);
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}
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free(pGlxWindow);
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}
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}
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static void WindowGone(__glXWindow *pGlxWindow, XID id)
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{
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pGlxWindow->idExists = False;
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__glXFreeGLXWindow(pGlxWindow);
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}
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void __glXFreeGLXPbuffer(__glXPbuffer *pGlxPbuffer)
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{
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if (!pGlxPbuffer->idExists && !pGlxPbuffer->refcnt) {
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free(pGlxPbuffer->be_xids);
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free(pGlxPbuffer);
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}
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}
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static void PbufferGone(__glXPbuffer *pGlxPbuffer, XID id)
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{
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pGlxPbuffer->idExists = False;
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__glXFreeGLXPbuffer(pGlxPbuffer);
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}
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/*
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** Free a context.
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*/
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GLboolean __glXFreeContext(__GLXcontext *cx)
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{
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if (cx->idExists || cx->isCurrent) return GL_FALSE;
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free(cx->feedbackBuf);
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free(cx->selectBuf);
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free(cx->real_ids);
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free(cx->real_vids);
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if (cx->pGlxPixmap) {
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/*
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** The previous drawable was a glx pixmap, release it.
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*/
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cx->pGlxPixmap->refcnt--;
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__glXFreeGLXPixmap( cx->pGlxPixmap );
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cx->pGlxPixmap = 0;
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}
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if (cx->pGlxReadPixmap) {
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/*
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** The previous drawable was a glx pixmap, release it.
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*/
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cx->pGlxReadPixmap->refcnt--;
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__glXFreeGLXPixmap( cx->pGlxReadPixmap );
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cx->pGlxReadPixmap = 0;
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}
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if (cx->pGlxWindow) {
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/*
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** The previous drawable was a glx window, release it.
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*/
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cx->pGlxWindow->refcnt--;
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__glXFreeGLXWindow( cx->pGlxWindow );
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cx->pGlxWindow = 0;
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}
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if (cx->pGlxReadWindow) {
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/*
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** The previous drawable was a glx window, release it.
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*/
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cx->pGlxReadWindow->refcnt--;
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__glXFreeGLXWindow( cx->pGlxReadWindow );
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cx->pGlxReadWindow = 0;
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}
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free(cx);
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if (cx == __glXLastContext) {
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__glXFlushContextCache();
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}
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return GL_TRUE;
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}
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/*
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** Initialize the GLX extension.
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*/
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void GlxExtensionInit(void)
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{
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ExtensionEntry *extEntry;
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int i;
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int glxSupported = 1;
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/*
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// do not initialize GLX extension if GLX is not supported
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// by ALL back-end servers.
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*/
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for (i=0; i<screenInfo.numScreens; i++) {
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glxSupported &= (dmxScreens[i].glxMajorOpcode > 0);
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}
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if (!glxSupported || !dmxGLXProxy) {
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return;
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}
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__glXContextRes = CreateNewResourceType((DeleteType)ContextGone,
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"GLXContext");
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__glXClientRes = CreateNewResourceType((DeleteType)ClientGone,
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"GLXClient");
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__glXPixmapRes = CreateNewResourceType((DeleteType)PixmapGone,
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"GLXPixmap");
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__glXWindowRes = CreateNewResourceType((DeleteType)WindowGone,
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"GLXWindow");
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__glXPbufferRes = CreateNewResourceType((DeleteType)PbufferGone,
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"GLXPbuffer");
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if (!__glXContextRes || !__glXClientRes || !__glXPixmapRes ||
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!__glXWindowRes || !__glXPbufferRes)
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return;
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/*
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** Add extension to server extensions.
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*/
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extEntry = AddExtension(GLX_EXTENSION_NAME, __GLX_NUMBER_EVENTS,
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__GLX_NUMBER_ERRORS, __glXDispatch,
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__glXSwapDispatch, ResetExtension,
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StandardMinorOpcode);
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if (!extEntry) {
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FatalError("__glXExtensionInit: AddExtensions failed\n");
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return;
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}
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/*
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if (!AddExtensionAlias(GLX_EXTENSION_ALIAS, extEntry)) {
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ErrorF("__glXExtensionInit: AddExtensionAlias failed\n");
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return;
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}
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*/
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__glXerrorBase = extEntry->errorBase;
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__glXBadContext = extEntry->errorBase + GLXBadContext;
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__glXBadContextState = extEntry->errorBase + GLXBadContextState;
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__glXBadDrawable = extEntry->errorBase + GLXBadDrawable;
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__glXBadPixmap = extEntry->errorBase + GLXBadPixmap;
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__glXBadContextTag = extEntry->errorBase + GLXBadContextTag;
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__glXBadCurrentWindow = extEntry->errorBase + GLXBadCurrentWindow;
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__glXBadRenderRequest = extEntry->errorBase + GLXBadRenderRequest;
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__glXBadLargeRequest = extEntry->errorBase + GLXBadLargeRequest;
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__glXUnsupportedPrivateRequest = extEntry->errorBase +
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GLXUnsupportedPrivateRequest;
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__glXBadFBConfig = extEntry->errorBase + GLXBadFBConfig;
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__glXBadPbuffer = extEntry->errorBase + GLXBadPbuffer;
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/*
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** Initialize table of client state. There is never a client 0.
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*/
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for (i=1; i <= MAXCLIENTS; i++) {
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__glXClients[i] = 0;
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}
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/*
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** Initialize screen specific data.
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*/
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__glXScreenInit(screenInfo.numScreens);
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/*
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** Initialize swap barrier support.
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*/
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SwapBarrierInit();
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}
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/************************************************************************/
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Bool __glXCoreType(void)
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{
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return 0;
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}
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/************************************************************************/
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void __glXFlushContextCache(void)
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{
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__glXLastContext = 0;
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}
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/************************************************************************/
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/*
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** Top level dispatcher; all commands are executed from here down.
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*/
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static int __glXDispatch(ClientPtr client)
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{
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REQUEST(xGLXSingleReq);
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CARD8 opcode;
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int (*proc)(__GLXclientState *cl, GLbyte *pc);
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__GLXclientState *cl;
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opcode = stuff->glxCode;
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cl = __glXClients[client->index];
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if (!cl) {
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cl = calloc(1, sizeof(__GLXclientState));
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__glXClients[client->index] = cl;
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if (!cl) {
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return BadAlloc;
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}
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cl->be_displays = calloc(screenInfo.numScreens, sizeof(Display *));
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if (!cl->be_displays) {
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free( cl );
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return BadAlloc;
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}
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}
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if (!cl->inUse) {
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/*
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** This is first request from this client. Associate a resource
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** with the client so we will be notified when the client dies.
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*/
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XID xid = FakeClientID(client->index);
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if (!AddResource( xid, __glXClientRes, (pointer)(long)client->index)) {
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return BadAlloc;
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}
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ResetClientState(client->index);
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cl->largeCmdRequestsTotal = 0;
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cl->inUse = GL_TRUE;
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cl->client = client;
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}
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/*
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** Check for valid opcode.
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*/
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if (opcode >= __GLX_SINGLE_TABLE_SIZE) {
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return BadRequest;
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}
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/*
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** Use the opcode to index into the procedure table.
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*/
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proc = __glXSingleTable[opcode];
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return (*proc)(cl, (GLbyte *) stuff);
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}
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static int __glXSwapDispatch(ClientPtr client)
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{
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REQUEST(xGLXSingleReq);
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CARD8 opcode;
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int (*proc)(__GLXclientState *cl, GLbyte *pc);
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__GLXclientState *cl;
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opcode = stuff->glxCode;
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cl = __glXClients[client->index];
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if (!cl) {
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cl = calloc(1, sizeof(__GLXclientState));
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__glXClients[client->index] = cl;
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if (!cl) {
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return BadAlloc;
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}
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cl->be_displays = calloc(screenInfo.numScreens, sizeof(Display *));
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if (!cl->be_displays) {
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free( cl );
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return BadAlloc;
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}
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}
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if (!cl->inUse) {
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/*
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** This is first request from this client. Associate a resource
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** with the client so we will be notified when the client dies.
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*/
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XID xid = FakeClientID(client->index);
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if (!AddResource( xid, __glXClientRes, (pointer)(long)client->index)) {
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return BadAlloc;
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}
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ResetClientState(client->index);
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cl->inUse = GL_TRUE;
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cl->client = client;
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}
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/*
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** Check for valid opcode.
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*/
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if (opcode >= __GLX_SINGLE_TABLE_SIZE) {
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return BadRequest;
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}
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/*
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** Use the opcode to index into the procedure table.
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*/
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proc = __glXSwapSingleTable[opcode];
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return (*proc)(cl, (GLbyte *) stuff);
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}
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int __glXNoSuchSingleOpcode(__GLXclientState *cl, GLbyte *pc)
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{
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return BadRequest;
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}
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void __glXNoSuchRenderOpcode(GLbyte *pc)
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{
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return;
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}
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