diff options
Diffstat (limited to 'nx-X11/programs/Xserver/GL/glx/glxext.c')
| -rw-r--r-- | nx-X11/programs/Xserver/GL/glx/glxext.c | 510 |
1 files changed, 510 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/GL/glx/glxext.c b/nx-X11/programs/Xserver/GL/glx/glxext.c new file mode 100644 index 000000000..cb82dc609 --- /dev/null +++ b/nx-X11/programs/Xserver/GL/glx/glxext.c @@ -0,0 +1,510 @@ +/* +** The contents of this file are subject to the GLX Public License Version 1.0 +** (the "License"). You may not use this file except in compliance with the +** License. You may obtain a copy of the License at Silicon Graphics, Inc., +** attn: Legal Services, 2011 N. Shoreline Blvd., Mountain View, CA 94043 +** or at http://www.sgi.com/software/opensource/glx/license.html. +** +** Software distributed under the License is distributed on an "AS IS" +** basis. ALL WARRANTIES ARE DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY +** IMPLIED WARRANTIES OF MERCHANTABILITY, OF FITNESS FOR A PARTICULAR +** PURPOSE OR OF NON- INFRINGEMENT. See the License for the specific +** language governing rights and limitations under the License. +** +** The Original Software is GLX version 1.2 source code, released February, +** 1999. The developer of the Original Software is Silicon Graphics, Inc. +** Those portions of the Subject Software created by Silicon Graphics, Inc. +** are Copyright (c) 1991-9 Silicon Graphics, Inc. All Rights Reserved. +** +*/ + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#include "glxserver.h" +#include <windowstr.h> +#include <propertyst.h> +#include <os.h> +#include "g_disptab.h" +#include "unpack.h" +#include "glxutil.h" +#include "glxext.h" +#include "micmap.h" + + +void GlxWrapInitVisuals(miInitVisualsProcPtr *); +void GlxSetVisualConfigs(int nconfigs, + __GLXvisualConfig *configs, void **privates); + +static __GLXextensionInfo *__glXExt /* = &__glDDXExtensionInfo */; + +/* +** Forward declarations. +*/ +static int __glXSwapDispatch(ClientPtr); +static int __glXDispatch(ClientPtr); + +/* +** Called when the extension is reset. +*/ +static void ResetExtension(ExtensionEntry* extEntry) +{ + __glXFlushContextCache(); + (*__glXExt->resetExtension)(); + __glXScreenReset(); +} + +/* +** Initialize the per-client context storage. +*/ +static void ResetClientState(int clientIndex) +{ + __GLXclientState *cl = __glXClients[clientIndex]; + + if (cl->returnBuf) free(cl->returnBuf); + if (cl->largeCmdBuf) free(cl->largeCmdBuf); + if (cl->currentContexts) free(cl->currentContexts); + memset(cl, 0, sizeof(__GLXclientState)); + /* + ** By default, assume that the client supports + ** GLX major version 1 minor version 0 protocol. + */ + cl->GLClientmajorVersion = 1; + cl->GLClientminorVersion = 0; + if (cl->GLClientextensions) + free(cl->GLClientextensions); + +} + +/* +** Reset state used to keep track of large (multi-request) commands. +*/ +void __glXResetLargeCommandStatus(__GLXclientState *cl) +{ + cl->largeCmdBytesSoFar = 0; + cl->largeCmdBytesTotal = 0; + cl->largeCmdRequestsSoFar = 0; + cl->largeCmdRequestsTotal = 0; +} + +/* +** This procedure is called when the client who created the context goes +** away OR when glXDestroyContext is called. In either case, all we do is +** flag that the ID is no longer valid, and (maybe) free the context. +** use. +*/ +static int ContextGone(__GLXcontext* cx, XID id) +{ + cx->idExists = GL_FALSE; + if (!cx->isCurrent) { + __glXFreeContext(cx); + } + + return True; +} + +/* +** Free a client's state. +*/ +static int ClientGone(int clientIndex, XID id) +{ + __GLXcontext *cx; + __GLXclientState *cl = __glXClients[clientIndex]; + int i; + + if (cl) { + /* + ** Free all the contexts that are current for this client. + */ + for (i=0; i < cl->numCurrentContexts; i++) { + cx = cl->currentContexts[i]; + if (cx) { + __glXDeassociateContext(cx); + cx->isCurrent = GL_FALSE; + if (!cx->idExists) { + __glXFreeContext(cx); + } + } + } + /* + ** Re-initialize the client state structure. Don't free it because + ** we'll probably get another client with this index and use the struct + ** again. There is a maximum of MAXCLIENTS of these structures. + */ + ResetClientState(clientIndex); + } + + return True; +} + +/* +** Free a GLX Pixmap. +*/ +static int PixmapGone(__GLXpixmap *pGlxPixmap, XID id) +{ + PixmapPtr pPixmap = (PixmapPtr) pGlxPixmap->pDraw; + + pGlxPixmap->idExists = False; + if (!pGlxPixmap->refcnt) { + /* + ** The DestroyPixmap routine should decrement the refcount and free + ** only if it's zero. + */ + (*pGlxPixmap->pScreen->DestroyPixmap)(pPixmap); + free(pGlxPixmap); + } + + return True; +} + +/* +** Free a context. +*/ +GLboolean __glXFreeContext(__GLXcontext *cx) +{ + if (cx->idExists || cx->isCurrent) return GL_FALSE; + + if (!cx->isDirect) { + if ((*cx->gc->exports.destroyContext)((__GLcontext *)cx->gc) == GL_FALSE) { + return GL_FALSE; + } + } + if (cx->feedbackBuf) free(cx->feedbackBuf); + if (cx->selectBuf) free(cx->selectBuf); + free(cx); + if (cx == __glXLastContext) { + __glXFlushContextCache(); + } + + return GL_TRUE; +} + +extern RESTYPE __glXSwapBarrierRes; + +static int SwapBarrierGone(int screen, XID drawable) +{ + if (__glXSwapBarrierFuncs && + __glXSwapBarrierFuncs[screen].bindSwapBarrierFunc != NULL) { + __glXSwapBarrierFuncs[screen].bindSwapBarrierFunc(screen, drawable, 0); + } + FreeResourceByType(drawable, __glXSwapBarrierRes, FALSE); + return True; +} + +/************************************************************************/ + +/* +** These routines can be used to check whether a particular GL command +** has caused an error. Specifically, we use them to check whether a +** given query has caused an error, in which case a zero-length data +** reply is sent to the client. +*/ + +static GLboolean errorOccured = GL_FALSE; + +/* +** The GL was will call this routine if an error occurs. +*/ +void __glXErrorCallBack(__GLinterface *gc, GLenum code) +{ + errorOccured = GL_TRUE; +} + +/* +** Clear the error flag before calling the GL command. +*/ +void __glXClearErrorOccured(void) +{ + errorOccured = GL_FALSE; +} + +/* +** Check if the GL command caused an error. +*/ +GLboolean __glXErrorOccured(void) +{ + return errorOccured; +} + +/************************************************************************/ + +/* +** Initialize the GLX extension. +*/ +void GlxExtensionInit(void) +{ + ExtensionEntry *extEntry; + int i; + + __glXContextRes = CreateNewResourceType((DeleteType)ContextGone); + __glXClientRes = CreateNewResourceType((DeleteType)ClientGone); + __glXPixmapRes = CreateNewResourceType((DeleteType)PixmapGone); + + /* + ** Add extension to server extensions. + */ + extEntry = AddExtension(GLX_EXTENSION_NAME, __GLX_NUMBER_EVENTS, + __GLX_NUMBER_ERRORS, __glXDispatch, + __glXSwapDispatch, ResetExtension, + StandardMinorOpcode); + if (!extEntry) { + FatalError("__glXExtensionInit: AddExtensions failed\n"); + return; + } + if (!AddExtensionAlias(GLX_EXTENSION_ALIAS, extEntry)) { + ErrorF("__glXExtensionInit: AddExtensionAlias failed\n"); + return; + } + + __glXBadContext = extEntry->errorBase + GLXBadContext; + __glXBadContextState = extEntry->errorBase + GLXBadContextState; + __glXBadDrawable = extEntry->errorBase + GLXBadDrawable; + __glXBadPixmap = extEntry->errorBase + GLXBadPixmap; + __glXBadContextTag = extEntry->errorBase + GLXBadContextTag; + __glXBadCurrentWindow = extEntry->errorBase + GLXBadCurrentWindow; + __glXBadRenderRequest = extEntry->errorBase + GLXBadRenderRequest; + __glXBadLargeRequest = extEntry->errorBase + GLXBadLargeRequest; + __glXUnsupportedPrivateRequest = extEntry->errorBase + + GLXUnsupportedPrivateRequest; + + __glXSwapBarrierRes = CreateNewResourceType((DeleteType)SwapBarrierGone); + + /* + ** Initialize table of client state. There is never a client 0. + */ + for (i=1; i <= MAXCLIENTS; i++) { + __glXClients[i] = 0; + } + + /* + ** Initialize screen specific data. + */ + __glXScreenInit(screenInfo.numScreens); +} + +/************************************************************************/ + +Bool __glXCoreType(void) +{ + return __glXExt->type; +} + +/************************************************************************/ + +void GlxSetVisualConfigs(int nconfigs, + __GLXvisualConfig *configs, void **privates) +{ + (*__glXExt->setVisualConfigs)(nconfigs, configs, privates); +} + +static miInitVisualsProcPtr saveInitVisualsProc; + +Bool GlxInitVisuals(VisualPtr *visualp, DepthPtr *depthp, + int *nvisualp, int *ndepthp, + int *rootDepthp, VisualID *defaultVisp, + unsigned long sizes, int bitsPerRGB, + int preferredVis) +{ + Bool ret; + + if (saveInitVisualsProc) { + ret = saveInitVisualsProc(visualp, depthp, nvisualp, ndepthp, + rootDepthp, defaultVisp, sizes, bitsPerRGB, + preferredVis); + if (!ret) + return False; + } + (*__glXExt->initVisuals)(visualp, depthp, nvisualp, ndepthp, rootDepthp, + defaultVisp, sizes, bitsPerRGB); + return True; +} + +void +GlxWrapInitVisuals(miInitVisualsProcPtr *initVisProc) +{ + saveInitVisualsProc = *initVisProc; + *initVisProc = GlxInitVisuals; + /* HACK: this shouldn't be done here but it's the earliest time */ + __glXExt = __glXglDDXExtensionInfo(); /* from GLcore */ +} + +/************************************************************************/ + +void __glXFlushContextCache(void) +{ + __glXLastContext = 0; +} + +/* +** Make a context the current one for the GL (in this implementation, there +** is only one instance of the GL, and we use it to serve all GL clients by +** switching it between different contexts). While we are at it, look up +** a context by its tag and return its (__GLXcontext *). +*/ +__GLXcontext *__glXForceCurrent(__GLXclientState *cl, GLXContextTag tag, + int *error) +{ + __GLXcontext *cx; + + /* + ** See if the context tag is legal; it is managed by the extension, + ** so if it's invalid, we have an implementation error. + */ + cx = (__GLXcontext *) __glXLookupContextByTag(cl, tag); + if (!cx) { + cl->client->errorValue = tag; + *error = __glXBadContextTag; + return 0; + } + + if (!cx->isDirect) { + if (cx->drawPriv == NULL) { + /* + ** The drawable has vanished. It must be a window, because only + ** windows can be destroyed from under us; GLX pixmaps are + ** refcounted and don't go away until no one is using them. + */ + *error = __glXBadCurrentWindow; + return 0; + } + } + + if (cx == __glXLastContext) { + /* No need to re-bind */ + return cx; + } + + /* Make this context the current one for the GL. */ + if (!cx->isDirect) { + if (!(*cx->gc->exports.forceCurrent)((__GLcontext *)cx->gc)) { + /* Bind failed, and set the error code. Bummer */ + cl->client->errorValue = cx->id; + *error = __glXBadContextState; + return 0; + } + } + __glXLastContext = cx; + return cx; +} + +/************************************************************************/ + +#ifndef NXAGENT_SERVER + +/* +** Top level dispatcher; all commands are executed from here down. +*/ +static int __glXDispatch(ClientPtr client) +{ + REQUEST(xGLXSingleReq); + CARD8 opcode; + int (*proc)(__GLXclientState *cl, GLbyte *pc); + __GLXclientState *cl; + + opcode = stuff->glxCode; + cl = __glXClients[client->index]; + if (!cl) { + cl = (__GLXclientState *) malloc(sizeof(__GLXclientState)); + __glXClients[client->index] = cl; + if (!cl) { + return BadAlloc; + } + memset(cl, 0, sizeof(__GLXclientState)); + } + + if (!cl->inUse) { + /* + ** This is first request from this client. Associate a resource + ** with the client so we will be notified when the client dies. + */ + XID xid = FakeClientID(client->index); + if (!AddResource( xid, __glXClientRes, (void *)(long)client->index)) { + return BadAlloc; + } + ResetClientState(client->index); + cl->inUse = GL_TRUE; + cl->client = client; + } + + /* + ** Check for valid opcode. + */ + if (opcode >= __GLX_SINGLE_TABLE_SIZE) { + return BadRequest; + } + + /* + ** If we're expecting a glXRenderLarge request, this better be one. + */ + if ((cl->largeCmdRequestsSoFar != 0) && (opcode != X_GLXRenderLarge)) { + client->errorValue = stuff->glxCode; + return __glXBadLargeRequest; + } + + /* + ** Use the opcode to index into the procedure table. + */ + proc = __glXSingleTable[opcode]; + return (*proc)(cl, (GLbyte *) stuff); +} + +static int __glXSwapDispatch(ClientPtr client) +{ + REQUEST(xGLXSingleReq); + CARD8 opcode; + int (*proc)(__GLXclientState *cl, GLbyte *pc); + __GLXclientState *cl; + + opcode = stuff->glxCode; + cl = __glXClients[client->index]; + if (!cl) { + cl = (__GLXclientState *) malloc(sizeof(__GLXclientState)); + __glXClients[client->index] = cl; + if (!cl) { + return BadAlloc; + } + memset(cl, 0, sizeof(__GLXclientState)); + } + + if (!cl->inUse) { + /* + ** This is first request from this client. Associate a resource + ** with the client so we will be notified when the client dies. + */ + XID xid = FakeClientID(client->index); + if (!AddResource( xid, __glXClientRes, (void *)(long)client->index)) { + return BadAlloc; + } + ResetClientState(client->index); + cl->inUse = GL_TRUE; + cl->client = client; + } + + /* + ** Check for valid opcode. + */ + if (opcode >= __GLX_SINGLE_TABLE_SIZE) { + return BadRequest; + } + + /* + ** Use the opcode to index into the procedure table. + */ + proc = __glXSwapSingleTable[opcode]; + return (*proc)(cl, (GLbyte *) stuff); +} + +#endif /* NXAGENT_SERVER */ + + +int __glXNoSuchSingleOpcode(__GLXclientState *cl, GLbyte *pc) +{ + return BadRequest; +} + +void __glXNoSuchRenderOpcode(GLbyte *pc) +{ + return; +} + |