diff options
Diffstat (limited to 'xorg-server/glx/glxcmds.c')
| -rw-r--r-- | xorg-server/glx/glxcmds.c | 4743 |
1 files changed, 2381 insertions, 2362 deletions
diff --git a/xorg-server/glx/glxcmds.c b/xorg-server/glx/glxcmds.c index 3ef567d10..d57dff5e0 100644 --- a/xorg-server/glx/glxcmds.c +++ b/xorg-server/glx/glxcmds.c @@ -1,2362 +1,2381 @@ -/* - * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) - * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice including the dates of first publication and - * either this permission notice or a reference to - * http://oss.sgi.com/projects/FreeB/ - * shall be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF - * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - * Except as contained in this notice, the name of Silicon Graphics, Inc. - * shall not be used in advertising or otherwise to promote the sale, use or - * other dealings in this Software without prior written authorization from - * Silicon Graphics, Inc. - */ - -#ifdef HAVE_DIX_CONFIG_H -#include <dix-config.h> -#endif - -#include <string.h> -#include <assert.h> - -#include "glxserver.h" -#include <GL/glxtokens.h> -#include <unpack.h> -#include <pixmapstr.h> -#include <windowstr.h> -#include "glxutil.h" -#include "glxext.h" -#include "glapitable.h" -#include "glapi.h" -#include "glthread.h" -#include "dispatch.h" -#include "indirect_dispatch.h" -#include "indirect_table.h" -#include "indirect_util.h" - -static int -validGlxScreen(ClientPtr client, int screen, __GLXscreen **pGlxScreen, int *err) -{ - /* - ** Check if screen exists. - */ - if (screen < 0 || screen >= screenInfo.numScreens) { - client->errorValue = screen; - *err = BadValue; - return FALSE; - } - *pGlxScreen = glxGetScreen(screenInfo.screens[screen]); - - return TRUE; -} - -static int -validGlxFBConfig(ClientPtr client, __GLXscreen *pGlxScreen, XID id, - __GLXconfig **config, int *err) -{ - __GLXconfig *m; - - for (m = pGlxScreen->fbconfigs; m != NULL; m = m->next) - if (m->fbconfigID == id) { - *config = m; - return TRUE; - } - - client->errorValue = id; - *err = __glXError(GLXBadFBConfig); - - return FALSE; -} - -static int -validGlxVisual(ClientPtr client, __GLXscreen *pGlxScreen, XID id, - __GLXconfig **config, int *err) -{ - int i; - - for (i = 0; i < pGlxScreen->numVisuals; i++) - if (pGlxScreen->visuals[i]->visualID == id) { - *config = pGlxScreen->visuals[i]; - return TRUE; - } - - client->errorValue = id; - *err = BadValue; - - return FALSE; -} - -static int -validGlxFBConfigForWindow(ClientPtr client, __GLXconfig *config, - DrawablePtr pDraw, int *err) -{ - ScreenPtr pScreen = pDraw->pScreen; - VisualPtr pVisual = NULL; - XID vid; - int i; - - vid = wVisual((WindowPtr)pDraw); - for (i = 0; i < pScreen->numVisuals; i++) { - if (pScreen->visuals[i].vid == vid) { - pVisual = &pScreen->visuals[i]; - break; - } - } - - /* FIXME: What exactly should we check here... */ - if (pVisual->class != glxConvertToXVisualType(config->visualType) || - !(config->drawableType & GLX_WINDOW_BIT)) { - client->errorValue = pDraw->id; - *err = BadMatch; - return FALSE; - } - - return TRUE; -} - -static int -validGlxContext(ClientPtr client, XID id, int access_mode, - __GLXcontext **context, int *err) -{ - *err = dixLookupResourceByType((pointer *) context, id, - __glXContextRes, client, access_mode); - if (*err != Success) { - client->errorValue = id; - if (*err == BadValue) - *err = __glXError(GLXBadContext); - return FALSE; - } - - return TRUE; -} - -static int -validGlxDrawable(ClientPtr client, XID id, int type, int access_mode, - __GLXdrawable **drawable, int *err) -{ - int rc; - - rc = dixLookupResourceByType((pointer *) drawable, id, - __glXDrawableRes, client, access_mode); - if (rc != Success && rc != BadValue) { - *err = rc; - client->errorValue = id; - return FALSE; - } - - /* If the ID of the glx drawable we looked up doesn't match the id - * we looked for, it's because we looked it up under the X - * drawable ID (see DoCreateGLXDrawable). */ - if (rc == BadValue || - (*drawable)->drawId != id || - (type != GLX_DRAWABLE_ANY && type != (*drawable)->type)) { - client->errorValue = id; - switch (type) { - case GLX_DRAWABLE_WINDOW: - *err = __glXError(GLXBadWindow); - return FALSE; - case GLX_DRAWABLE_PIXMAP: - *err = __glXError(GLXBadPixmap); - return FALSE; - case GLX_DRAWABLE_PBUFFER: - *err = __glXError(GLXBadPbuffer); - return FALSE; - case GLX_DRAWABLE_ANY: - *err = __glXError(GLXBadDrawable); - return FALSE; - } - } - - return TRUE; -} - -void -__glXContextDestroy(__GLXcontext *context) -{ - __glXFlushContextCache(); -} - -static void __glXdirectContextDestroy(__GLXcontext *context) -{ - __glXContextDestroy(context); - free(context); -} - -static __GLXcontext *__glXdirectContextCreate(__GLXscreen *screen, - __GLXconfig *modes, - __GLXcontext *shareContext) -{ - __GLXcontext *context; - - context = calloc(1, sizeof (__GLXcontext)); - if (context == NULL) - return NULL; - - context->destroy = __glXdirectContextDestroy; - - return context; -} - -/** - * Create a GL context with the given properties. This routine is used - * to implement \c glXCreateContext, \c glXCreateNewContext, and - * \c glXCreateContextWithConfigSGIX. This works becuase of the hack way - * that GLXFBConfigs are implemented. Basically, the FBConfigID is the - * same as the VisualID. - */ - -static int -DoCreateContext(__GLXclientState *cl, GLXContextID gcId, - GLXContextID shareList, __GLXconfig *config, - __GLXscreen *pGlxScreen, GLboolean isDirect) -{ - ClientPtr client = cl->client; - __GLXcontext *glxc, *shareglxc; - int err; - - LEGAL_NEW_RESOURCE(gcId, client); - - /* - ** Find the display list space that we want to share. - ** - ** NOTE: In a multithreaded X server, we would need to keep a reference - ** count for each display list so that if one client detroyed a list that - ** another client was using, the list would not really be freed until it - ** was no longer in use. Since this sample implementation has no support - ** for multithreaded servers, we don't do this. - */ - if (shareList == None) { - shareglxc = 0; - } else { - if (!validGlxContext(client, shareList, DixReadAccess, - &shareglxc, &err)) - return err; - - if (shareglxc->isDirect) { - /* - ** NOTE: no support for sharing display lists between direct - ** contexts, even if they are in the same address space. - */ -#if 0 - /* Disabling this code seems to allow shared display lists - * and texture objects to work. We'll leave it disabled for now. - */ - client->errorValue = shareList; - return BadMatch; -#endif - } else { - /* - ** Create an indirect context regardless of what the client asked - ** for; this way we can share display list space with shareList. - */ - isDirect = GL_FALSE; - } - } - - /* - ** Allocate memory for the new context - */ - if (!isDirect) - glxc = pGlxScreen->createContext(pGlxScreen, config, shareglxc); - else - glxc = __glXdirectContextCreate(pGlxScreen, config, shareglxc); - if (!glxc) { - return BadAlloc; - } - - /* - ** Initially, setup the part of the context that could be used by - ** a GL core that needs windowing information (e.g., Mesa). - */ - glxc->pGlxScreen = pGlxScreen; - glxc->config = config; - - /* - ** Register this context as a resource. - */ - if (!AddResource(gcId, __glXContextRes, (pointer)glxc)) { - (*glxc->destroy)(glxc); - client->errorValue = gcId; - return BadAlloc; - } - - /* - ** Finally, now that everything is working, setup the rest of the - ** context. - */ - glxc->id = gcId; - glxc->share_id = shareList; - glxc->idExists = GL_TRUE; - glxc->isCurrent = GL_FALSE; - glxc->isDirect = isDirect; - glxc->renderMode = GL_RENDER; - - __glXAddToContextList(glxc); - - return Success; -} - -int __glXDisp_CreateContext(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXCreateContextReq *req = (xGLXCreateContextReq *) pc; - __GLXconfig *config; - __GLXscreen *pGlxScreen; - int err; - - REQUEST_SIZE_MATCH(xGLXCreateContextReq); - - if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err)) - return err; - if (!validGlxVisual(cl->client, pGlxScreen, req->visual, &config, &err)) - return err; - - return DoCreateContext(cl, req->context, req->shareList, - config, pGlxScreen, req->isDirect); -} - -int __glXDisp_CreateNewContext(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXCreateNewContextReq *req = (xGLXCreateNewContextReq *) pc; - __GLXconfig *config; - __GLXscreen *pGlxScreen; - int err; - - REQUEST_SIZE_MATCH(xGLXCreateNewContextReq); - - if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err)) - return err; - if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err)) - return err; - - return DoCreateContext(cl, req->context, req->shareList, - config, pGlxScreen, req->isDirect); -} - -int __glXDisp_CreateContextWithConfigSGIX(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXCreateContextWithConfigSGIXReq *req = - (xGLXCreateContextWithConfigSGIXReq *) pc; - __GLXconfig *config; - __GLXscreen *pGlxScreen; - int err; - - REQUEST_SIZE_MATCH(xGLXCreateContextWithConfigSGIXReq); - - if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err)) - return err; - if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err)) - return err; - - return DoCreateContext(cl, req->context, req->shareList, - config, pGlxScreen, req->isDirect); -} -int __glXDisp_DestroyContext(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXDestroyContextReq *req = (xGLXDestroyContextReq *) pc; - __GLXcontext *glxc; - int err; - - REQUEST_SIZE_MATCH(xGLXDestroyContextReq); - - if (!validGlxContext(cl->client, req->context, DixDestroyAccess, - &glxc, &err)) - return err; - - FreeResourceByType(req->context, __glXContextRes, FALSE); - return Success; -} - -/*****************************************************************************/ - -/* -** For each client, the server keeps a table of all the contexts that are -** current for that client (each thread of a client may have its own current -** context). These routines add, change, and lookup contexts in the table. -*/ - -/* -** Add a current context, and return the tag that will be used to refer to it. -*/ -static int AddCurrentContext(__GLXclientState *cl, __GLXcontext *glxc) -{ - int i; - int num = cl->numCurrentContexts; - __GLXcontext **table = cl->currentContexts; - - if (!glxc) return -1; - - /* - ** Try to find an empty slot and use it. - */ - for (i=0; i < num; i++) { - if (!table[i]) { - table[i] = glxc; - return i+1; - } - } - /* - ** Didn't find a free slot, so we'll have to grow the table. - */ - if (!num) { - table = (__GLXcontext **) malloc(sizeof(__GLXcontext *)); - } else { - table = (__GLXcontext **) realloc(table, - (num+1)*sizeof(__GLXcontext *)); - } - table[num] = glxc; - cl->currentContexts = table; - cl->numCurrentContexts++; - return num+1; -} - -/* -** Given a tag, change the current context for the corresponding entry. -*/ -static void ChangeCurrentContext(__GLXclientState *cl, __GLXcontext *glxc, - GLXContextTag tag) -{ - __GLXcontext **table = cl->currentContexts; - table[tag-1] = glxc; -} - -/* -** For this implementation we have chosen to simply use the index of the -** context's entry in the table as the context tag. A tag must be greater -** than 0. -*/ -__GLXcontext *__glXLookupContextByTag(__GLXclientState *cl, GLXContextTag tag) -{ - int num = cl->numCurrentContexts; - - if (tag < 1 || tag > num) { - return 0; - } else { - return cl->currentContexts[tag-1]; - } -} - -/*****************************************************************************/ - -static void StopUsingContext(__GLXcontext *glxc) -{ - if (glxc) { - if (glxc == __glXLastContext) { - /* Tell server GL library */ - __glXLastContext = 0; - } - glxc->isCurrent = GL_FALSE; - if (!glxc->idExists) { - __glXFreeContext(glxc); - } - } -} - -static void StartUsingContext(__GLXclientState *cl, __GLXcontext *glxc) -{ - glxc->isCurrent = GL_TRUE; - __glXLastContext = glxc; -} - -/** - * This is a helper function to handle the legacy (pre GLX 1.3) cases - * where passing an X window to glXMakeCurrent is valid. Given a - * resource ID, look up the GLX drawable if available, otherwise, make - * sure it's an X window and create a GLX drawable one the fly. - */ -static __GLXdrawable * -__glXGetDrawable(__GLXcontext *glxc, GLXDrawable drawId, ClientPtr client, - int *error) -{ - DrawablePtr pDraw; - __GLXdrawable *pGlxDraw; - int rc; - - if (validGlxDrawable(client, drawId, GLX_DRAWABLE_ANY, - DixWriteAccess, &pGlxDraw, &rc)) { - if (glxc != NULL && pGlxDraw->config != glxc->config) { - client->errorValue = drawId; - *error = BadMatch; - return NULL; - } - - return pGlxDraw; - } - - /* No active context and an unknown drawable, bail. */ - if (glxc == NULL) { - client->errorValue = drawId; - *error = BadMatch; - return NULL; - } - - /* The drawId wasn't a GLX drawable. Make sure it's a window and - * create a GLXWindow for it. Check that the drawable screen - * matches the context screen and that the context fbconfig is - * compatible with the window visual. */ - - rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixGetAttrAccess); - if (rc != Success || pDraw->type != DRAWABLE_WINDOW) { - client->errorValue = drawId; - *error = __glXError(GLXBadDrawable); - return NULL; - } - - if (pDraw->pScreen != glxc->pGlxScreen->pScreen) { - client->errorValue = pDraw->pScreen->myNum; - *error = BadMatch; - return NULL; - } - - if (!validGlxFBConfigForWindow(client, glxc->config, pDraw, error)) - return NULL; - - pGlxDraw = glxc->pGlxScreen->createDrawable(client, glxc->pGlxScreen, - pDraw, drawId, - GLX_DRAWABLE_WINDOW, - drawId, glxc->config); - - /* since we are creating the drawablePrivate, drawId should be new */ - if (!AddResource(drawId, __glXDrawableRes, pGlxDraw)) { - pGlxDraw->destroy (pGlxDraw); - *error = BadAlloc; - return NULL; - } - - return pGlxDraw; -} - -/*****************************************************************************/ -/* -** Make an OpenGL context and drawable current. -*/ - -static int -DoMakeCurrent(__GLXclientState *cl, - GLXDrawable drawId, GLXDrawable readId, - GLXContextID contextId, GLXContextTag tag) -{ - ClientPtr client = cl->client; - xGLXMakeCurrentReply reply; - __GLXcontext *glxc, *prevglxc; - __GLXdrawable *drawPriv = NULL; - __GLXdrawable *readPriv = NULL; - int error; - GLuint mask; - - /* - ** If one is None and the other isn't, it's a bad match. - */ - - mask = (drawId == None) ? (1 << 0) : 0; - mask |= (readId == None) ? (1 << 1) : 0; - mask |= (contextId == None) ? (1 << 2) : 0; - - if ( (mask != 0x00) && (mask != 0x07) ) { - return BadMatch; - } - - /* - ** Lookup old context. If we have one, it must be in a usable state. - */ - if (tag != 0) { - prevglxc = __glXLookupContextByTag(cl, tag); - if (!prevglxc) { - /* - ** Tag for previous context is invalid. - */ - return __glXError(GLXBadContextTag); - } - if (prevglxc->renderMode != GL_RENDER) { - /* Oops. Not in render mode render. */ - client->errorValue = prevglxc->id; - return __glXError(GLXBadContextState); - } - } else { - prevglxc = 0; - } - - /* - ** Lookup new context. It must not be current for someone else. - */ - if (contextId != None) { - int status; - - if (!validGlxContext(client, contextId, DixUseAccess, &glxc, &error)) - return error; - if ((glxc != prevglxc) && glxc->isCurrent) { - /* Context is current to somebody else */ - return BadAccess; - } - - assert( drawId != None ); - assert( readId != None ); - - drawPriv = __glXGetDrawable(glxc, drawId, client, &status); - if (drawPriv == NULL) - return status; - - readPriv = __glXGetDrawable(glxc, readId, client, &status); - if (readPriv == NULL) - return status; - - } else { - /* Switching to no context. Ignore new drawable. */ - glxc = 0; - drawPriv = 0; - readPriv = 0; - } - - - if (prevglxc) { - /* - ** Flush the previous context if needed. - */ - if (__GLX_HAS_UNFLUSHED_CMDS(prevglxc)) { - if (__glXForceCurrent(cl, tag, (int *)&error)) { - CALL_Flush( GET_DISPATCH(), () ); - __GLX_NOTE_FLUSHED_CMDS(prevglxc); - } else { - return error; - } - } - - /* - ** Make the previous context not current. - */ - if (!(*prevglxc->loseCurrent)(prevglxc)) { - return __glXError(GLXBadContext); - } - __glXFlushContextCache(); - if (!prevglxc->isDirect) { - prevglxc->drawPriv = NULL; - prevglxc->readPriv = NULL; - } - } - - - if ((glxc != 0) && !glxc->isDirect) { - - glxc->drawPriv = drawPriv; - glxc->readPriv = readPriv; - - /* make the context current */ - if (!(*glxc->makeCurrent)(glxc)) { - glxc->drawPriv = NULL; - glxc->readPriv = NULL; - return __glXError(GLXBadContext); - } - - glxc->isCurrent = GL_TRUE; - } - - if (prevglxc) { - ChangeCurrentContext(cl, glxc, tag); - StopUsingContext(prevglxc); - } else { - tag = AddCurrentContext(cl, glxc); - } - - if (glxc) { - StartUsingContext(cl, glxc); - reply.contextTag = tag; - } else { - reply.contextTag = 0; - } - - reply.length = 0; - reply.type = X_Reply; - reply.sequenceNumber = client->sequence; - - if (client->swapped) { - __glXSwapMakeCurrentReply(client, &reply); - } else { - WriteToClient(client, sz_xGLXMakeCurrentReply, (char *)&reply); - } - return Success; -} - -int __glXDisp_MakeCurrent(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXMakeCurrentReq *req = (xGLXMakeCurrentReq *) pc; - - REQUEST_SIZE_MATCH(xGLXMakeCurrentReq); - - return DoMakeCurrent( cl, req->drawable, req->drawable, - req->context, req->oldContextTag ); -} - -int __glXDisp_MakeContextCurrent(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXMakeContextCurrentReq *req = (xGLXMakeContextCurrentReq *) pc; - - REQUEST_SIZE_MATCH(xGLXMakeContextCurrentReq); - - return DoMakeCurrent( cl, req->drawable, req->readdrawable, - req->context, req->oldContextTag ); -} - -int __glXDisp_MakeCurrentReadSGI(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXMakeCurrentReadSGIReq *req = (xGLXMakeCurrentReadSGIReq *) pc; - - REQUEST_SIZE_MATCH(xGLXMakeCurrentReadSGIReq); - - return DoMakeCurrent( cl, req->drawable, req->readable, - req->context, req->oldContextTag ); -} - -int __glXDisp_IsDirect(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXIsDirectReq *req = (xGLXIsDirectReq *) pc; - xGLXIsDirectReply reply; - __GLXcontext *glxc; - int err; - - REQUEST_SIZE_MATCH(xGLXIsDirectReq); - - if (!validGlxContext(cl->client, req->context, DixReadAccess, &glxc, &err)) - return err; - - reply.isDirect = glxc->isDirect; - reply.length = 0; - reply.type = X_Reply; - reply.sequenceNumber = client->sequence; - - if (client->swapped) { - __glXSwapIsDirectReply(client, &reply); - } else { - WriteToClient(client, sz_xGLXIsDirectReply, (char *)&reply); - } - - return Success; -} - -int __glXDisp_QueryVersion(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXQueryVersionReq *req = (xGLXQueryVersionReq *) pc; - xGLXQueryVersionReply reply; - GLuint major, minor; - - REQUEST_SIZE_MATCH(xGLXQueryVersionReq); - - major = req->majorVersion; - minor = req->minorVersion; - (void)major; - (void)minor; - - /* - ** Server should take into consideration the version numbers sent by the - ** client if it wants to work with older clients; however, in this - ** implementation the server just returns its version number. - */ - reply.majorVersion = glxMajorVersion; - reply.minorVersion = glxMinorVersion; - reply.length = 0; - reply.type = X_Reply; - reply.sequenceNumber = client->sequence; - - if (client->swapped) { - __glXSwapQueryVersionReply(client, &reply); - } else { - WriteToClient(client, sz_xGLXQueryVersionReply, (char *)&reply); - } - return Success; -} - -int __glXDisp_WaitGL(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXWaitGLReq *req = (xGLXWaitGLReq *)pc; - GLXContextTag tag; - __GLXcontext *glxc = NULL; - int error; - - REQUEST_SIZE_MATCH(xGLXWaitGLReq); - - tag = req->contextTag; - if (tag) { - glxc = __glXLookupContextByTag(cl, tag); - if (!glxc) - return __glXError(GLXBadContextTag); - - if (!__glXForceCurrent(cl, req->contextTag, &error)) - return error; - - CALL_Finish( GET_DISPATCH(), () ); - } - - if (glxc && glxc->drawPriv->waitGL) - (*glxc->drawPriv->waitGL)(glxc->drawPriv); - - return Success; -} - -int __glXDisp_WaitX(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXWaitXReq *req = (xGLXWaitXReq *)pc; - GLXContextTag tag; - __GLXcontext *glxc = NULL; - int error; - - REQUEST_SIZE_MATCH(xGLXWaitXReq); - - tag = req->contextTag; - if (tag) { - glxc = __glXLookupContextByTag(cl, tag); - if (!glxc) - return __glXError(GLXBadContextTag); - - if (!__glXForceCurrent(cl, req->contextTag, &error)) - return error; - } - - if (glxc && glxc->drawPriv->waitX) - (*glxc->drawPriv->waitX)(glxc->drawPriv); - - return Success; -} - -int __glXDisp_CopyContext(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXCopyContextReq *req = (xGLXCopyContextReq *) pc; - GLXContextID source; - GLXContextID dest; - GLXContextTag tag; - unsigned long mask; - __GLXcontext *src, *dst; - int error; - - REQUEST_SIZE_MATCH(xGLXCopyContextReq); - - source = req->source; - dest = req->dest; - tag = req->contextTag; - mask = req->mask; - if (!validGlxContext(cl->client, source, DixReadAccess, &src, &error)) - return error; - if (!validGlxContext(cl->client, dest, DixWriteAccess, &dst, &error)) - return error; - - /* - ** They must be in the same address space, and same screen. - ** NOTE: no support for direct rendering contexts here. - */ - if (src->isDirect || dst->isDirect || - (src->pGlxScreen != dst->pGlxScreen)) { - client->errorValue = source; - return BadMatch; - } - - /* - ** The destination context must not be current for any client. - */ - if (dst->isCurrent) { - client->errorValue = dest; - return BadAccess; - } - - if (tag) { - __GLXcontext *tagcx = __glXLookupContextByTag(cl, tag); - - if (!tagcx) { - return __glXError(GLXBadContextTag); - } - if (tagcx != src) { - /* - ** This would be caused by a faulty implementation of the client - ** library. - */ - return BadMatch; - } - /* - ** In this case, glXCopyContext is in both GL and X streams, in terms - ** of sequentiality. - */ - if (__glXForceCurrent(cl, tag, &error)) { - /* - ** Do whatever is needed to make sure that all preceding requests - ** in both streams are completed before the copy is executed. - */ - CALL_Finish( GET_DISPATCH(), () ); - __GLX_NOTE_FLUSHED_CMDS(tagcx); - } else { - return error; - } - } - /* - ** Issue copy. The only reason for failure is a bad mask. - */ - if (!(*dst->copy)(dst, src, mask)) { - client->errorValue = mask; - return BadValue; - } - return Success; -} - -enum { - GLX_VIS_CONFIG_UNPAIRED = 18, - GLX_VIS_CONFIG_PAIRED = 20 -}; - -enum { - GLX_VIS_CONFIG_TOTAL = GLX_VIS_CONFIG_UNPAIRED + GLX_VIS_CONFIG_PAIRED -}; - -int __glXDisp_GetVisualConfigs(__GLXclientState *cl, GLbyte *pc) -{ - xGLXGetVisualConfigsReq *req = (xGLXGetVisualConfigsReq *) pc; - ClientPtr client = cl->client; - xGLXGetVisualConfigsReply reply; - __GLXscreen *pGlxScreen; - __GLXconfig *modes; - CARD32 buf[GLX_VIS_CONFIG_TOTAL]; - int p, i, err; - __GLX_DECLARE_SWAP_VARIABLES; - __GLX_DECLARE_SWAP_ARRAY_VARIABLES; - - REQUEST_SIZE_MATCH(xGLXGetVisualConfigsReq); - - if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err)) - return err; - - reply.numVisuals = pGlxScreen->numVisuals; - reply.numProps = GLX_VIS_CONFIG_TOTAL; - reply.length = (reply.numVisuals * __GLX_SIZE_CARD32 * GLX_VIS_CONFIG_TOTAL) >> 2; - reply.type = X_Reply; - reply.sequenceNumber = client->sequence; - - if (client->swapped) { - __GLX_SWAP_SHORT(&reply.sequenceNumber); - __GLX_SWAP_INT(&reply.length); - __GLX_SWAP_INT(&reply.numVisuals); - __GLX_SWAP_INT(&reply.numProps); - } - - WriteToClient(client, sz_xGLXGetVisualConfigsReply, (char *)&reply); - - for (i = 0; i < pGlxScreen->numVisuals; i++) { - modes = pGlxScreen->visuals[i]; - - p = 0; - buf[p++] = modes->visualID; - buf[p++] = glxConvertToXVisualType( modes->visualType ); - buf[p++] = (modes->renderType & GLX_RGBA_BIT) ? GL_TRUE : GL_FALSE; - - buf[p++] = modes->redBits; - buf[p++] = modes->greenBits; - buf[p++] = modes->blueBits; - buf[p++] = modes->alphaBits; - buf[p++] = modes->accumRedBits; - buf[p++] = modes->accumGreenBits; - buf[p++] = modes->accumBlueBits; - buf[p++] = modes->accumAlphaBits; - - buf[p++] = modes->doubleBufferMode; - buf[p++] = modes->stereoMode; - - buf[p++] = modes->rgbBits; - buf[p++] = modes->depthBits; - buf[p++] = modes->stencilBits; - buf[p++] = modes->numAuxBuffers; - buf[p++] = modes->level; - - assert(p == GLX_VIS_CONFIG_UNPAIRED); - /* - ** Add token/value pairs for extensions. - */ - buf[p++] = GLX_VISUAL_CAVEAT_EXT; - buf[p++] = modes->visualRating; - buf[p++] = GLX_TRANSPARENT_TYPE; - buf[p++] = modes->transparentPixel; - buf[p++] = GLX_TRANSPARENT_RED_VALUE; - buf[p++] = modes->transparentRed; - buf[p++] = GLX_TRANSPARENT_GREEN_VALUE; - buf[p++] = modes->transparentGreen; - buf[p++] = GLX_TRANSPARENT_BLUE_VALUE; - buf[p++] = modes->transparentBlue; - buf[p++] = GLX_TRANSPARENT_ALPHA_VALUE; - buf[p++] = modes->transparentAlpha; - buf[p++] = GLX_TRANSPARENT_INDEX_VALUE; - buf[p++] = modes->transparentIndex; - buf[p++] = GLX_SAMPLES_SGIS; - buf[p++] = modes->samples; - buf[p++] = GLX_SAMPLE_BUFFERS_SGIS; - buf[p++] = modes->sampleBuffers; - buf[p++] = 0; /* copy over visualSelectGroup (GLX_VISUAL_SELECT_GROUP_SGIX)? */ - buf[p++] = 0; - - assert(p == GLX_VIS_CONFIG_TOTAL); - if (client->swapped) { - __GLX_SWAP_INT_ARRAY(buf, p); - } - WriteToClient(client, __GLX_SIZE_CARD32 * p, (char *)buf); - } - return Success; -} - -#define __GLX_TOTAL_FBCONFIG_ATTRIBS (36) -#define __GLX_FBCONFIG_ATTRIBS_LENGTH (__GLX_TOTAL_FBCONFIG_ATTRIBS * 2) -/** - * Send the set of GLXFBConfigs to the client. There is not currently - * and interface into the driver on the server-side to get GLXFBConfigs, - * so we "invent" some based on the \c __GLXvisualConfig structures that - * the driver does supply. - * - * The reply format for both \c glXGetFBConfigs and \c glXGetFBConfigsSGIX - * is the same, so this routine pulls double duty. - */ - -static int -DoGetFBConfigs(__GLXclientState *cl, unsigned screen) -{ - ClientPtr client = cl->client; - xGLXGetFBConfigsReply reply; - __GLXscreen *pGlxScreen; - CARD32 buf[__GLX_FBCONFIG_ATTRIBS_LENGTH]; - int p, err; - __GLXconfig *modes; - __GLX_DECLARE_SWAP_VARIABLES; - __GLX_DECLARE_SWAP_ARRAY_VARIABLES; - - if (!validGlxScreen(cl->client, screen, &pGlxScreen, &err)) - return err; - - reply.numFBConfigs = pGlxScreen->numFBConfigs; - reply.numAttribs = __GLX_TOTAL_FBCONFIG_ATTRIBS; - reply.length = (__GLX_FBCONFIG_ATTRIBS_LENGTH * reply.numFBConfigs); - reply.type = X_Reply; - reply.sequenceNumber = client->sequence; - - if (client->swapped) { - __GLX_SWAP_SHORT(&reply.sequenceNumber); - __GLX_SWAP_INT(&reply.length); - __GLX_SWAP_INT(&reply.numFBConfigs); - __GLX_SWAP_INT(&reply.numAttribs); - } - - WriteToClient(client, sz_xGLXGetFBConfigsReply, (char *)&reply); - - for (modes = pGlxScreen->fbconfigs; modes != NULL; modes = modes->next) { - p = 0; - -#define WRITE_PAIR(tag,value) \ - do { buf[p++] = tag ; buf[p++] = value ; } while( 0 ) - - WRITE_PAIR( GLX_VISUAL_ID, modes->visualID ); - WRITE_PAIR( GLX_FBCONFIG_ID, modes->fbconfigID ); - WRITE_PAIR( GLX_X_RENDERABLE, GL_TRUE ); - - WRITE_PAIR( GLX_RGBA, - (modes->renderType & GLX_RGBA_BIT) ? GL_TRUE : GL_FALSE ); - WRITE_PAIR( GLX_RENDER_TYPE, modes->renderType ); - WRITE_PAIR( GLX_DOUBLEBUFFER, modes->doubleBufferMode ); - WRITE_PAIR( GLX_STEREO, modes->stereoMode ); - - WRITE_PAIR( GLX_BUFFER_SIZE, modes->rgbBits ); - WRITE_PAIR( GLX_LEVEL, modes->level ); - WRITE_PAIR( GLX_AUX_BUFFERS, modes->numAuxBuffers ); - WRITE_PAIR( GLX_RED_SIZE, modes->redBits ); - WRITE_PAIR( GLX_GREEN_SIZE, modes->greenBits ); - WRITE_PAIR( GLX_BLUE_SIZE, modes->blueBits ); - WRITE_PAIR( GLX_ALPHA_SIZE, modes->alphaBits ); - WRITE_PAIR( GLX_ACCUM_RED_SIZE, modes->accumRedBits ); - WRITE_PAIR( GLX_ACCUM_GREEN_SIZE, modes->accumGreenBits ); - WRITE_PAIR( GLX_ACCUM_BLUE_SIZE, modes->accumBlueBits ); - WRITE_PAIR( GLX_ACCUM_ALPHA_SIZE, modes->accumAlphaBits ); - WRITE_PAIR( GLX_DEPTH_SIZE, modes->depthBits ); - WRITE_PAIR( GLX_STENCIL_SIZE, modes->stencilBits ); - WRITE_PAIR( GLX_X_VISUAL_TYPE, modes->visualType ); - WRITE_PAIR( GLX_CONFIG_CAVEAT, modes->visualRating ); - WRITE_PAIR( GLX_TRANSPARENT_TYPE, modes->transparentPixel ); - WRITE_PAIR( GLX_TRANSPARENT_RED_VALUE, modes->transparentRed ); - WRITE_PAIR( GLX_TRANSPARENT_GREEN_VALUE, modes->transparentGreen ); - WRITE_PAIR( GLX_TRANSPARENT_BLUE_VALUE, modes->transparentBlue ); - WRITE_PAIR( GLX_TRANSPARENT_ALPHA_VALUE, modes->transparentAlpha ); - WRITE_PAIR( GLX_TRANSPARENT_INDEX_VALUE, modes->transparentIndex ); - WRITE_PAIR( GLX_SWAP_METHOD_OML, modes->swapMethod ); - WRITE_PAIR( GLX_SAMPLES_SGIS, modes->samples ); - WRITE_PAIR( GLX_SAMPLE_BUFFERS_SGIS, modes->sampleBuffers ); - /* GLX_VISUAL_SELECT_GROUP_SGIX ? */ - WRITE_PAIR( GLX_DRAWABLE_TYPE, modes->drawableType ); - WRITE_PAIR( GLX_BIND_TO_TEXTURE_RGB_EXT, modes->bindToTextureRgb ); - WRITE_PAIR( GLX_BIND_TO_TEXTURE_RGBA_EXT, modes->bindToTextureRgba ); - WRITE_PAIR( GLX_BIND_TO_MIPMAP_TEXTURE_EXT, modes->bindToMipmapTexture ); - WRITE_PAIR( GLX_BIND_TO_TEXTURE_TARGETS_EXT, modes->bindToTextureTargets ); - - if (client->swapped) { - __GLX_SWAP_INT_ARRAY(buf, __GLX_FBCONFIG_ATTRIBS_LENGTH); - } - WriteToClient(client, __GLX_SIZE_CARD32 * __GLX_FBCONFIG_ATTRIBS_LENGTH, - (char *)buf); - } - return Success; -} - - -int __glXDisp_GetFBConfigs(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXGetFBConfigsReq *req = (xGLXGetFBConfigsReq *) pc; - REQUEST_SIZE_MATCH(xGLXGetFBConfigsReq); - return DoGetFBConfigs(cl, req->screen); -} - -int __glXDisp_GetFBConfigsSGIX(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXGetFBConfigsSGIXReq *req = (xGLXGetFBConfigsSGIXReq *) pc; - REQUEST_SIZE_MATCH(xGLXGetFBConfigsSGIXReq); - return DoGetFBConfigs(cl, req->screen); -} - -GLboolean -__glXDrawableInit(__GLXdrawable *drawable, - __GLXscreen *screen, DrawablePtr pDraw, int type, - XID drawId, __GLXconfig *config) -{ - drawable->pDraw = pDraw; - drawable->type = type; - drawable->drawId = drawId; - drawable->config = config; - drawable->eventMask = 0; - - return GL_TRUE; -} - -void -__glXDrawableRelease(__GLXdrawable *drawable) -{ -} - -static int -DoCreateGLXDrawable(ClientPtr client, __GLXscreen *pGlxScreen, - __GLXconfig *config, DrawablePtr pDraw, XID drawableId, - XID glxDrawableId, int type) -{ - __GLXdrawable *pGlxDraw; - - if (pGlxScreen->pScreen != pDraw->pScreen) - return BadMatch; - - pGlxDraw = pGlxScreen->createDrawable(client, pGlxScreen, pDraw, - drawableId, type, - glxDrawableId, config); - if (pGlxDraw == NULL) - return BadAlloc; - - if (!AddResource(glxDrawableId, __glXDrawableRes, pGlxDraw)) { - pGlxDraw->destroy (pGlxDraw); - return BadAlloc; - } - - /* Add the glx drawable under the XID of the underlying X drawable - * too. That way we'll get a callback in DrawableGone and can - * clean up properly when the drawable is destroyed. */ - if (drawableId != glxDrawableId && - !AddResource(pDraw->id, __glXDrawableRes, pGlxDraw)) { - pGlxDraw->destroy (pGlxDraw); - return BadAlloc; - } - - return Success; -} - -static int -DoCreateGLXPixmap(ClientPtr client, __GLXscreen *pGlxScreen, __GLXconfig *config, - XID drawableId, XID glxDrawableId) -{ - DrawablePtr pDraw; - int err; - - LEGAL_NEW_RESOURCE(glxDrawableId, client); - - err = dixLookupDrawable(&pDraw, drawableId, client, 0, DixAddAccess); - if (err != Success) { - client->errorValue = drawableId; - return err; - } - if (pDraw->type != DRAWABLE_PIXMAP) { - client->errorValue = drawableId; - return BadPixmap; - } - - err = DoCreateGLXDrawable(client, pGlxScreen, config, pDraw, drawableId, - glxDrawableId, GLX_DRAWABLE_PIXMAP); - - return err; -} - -static void -determineTextureTarget(ClientPtr client, XID glxDrawableID, - CARD32 *attribs, CARD32 numAttribs) -{ - GLenum target = 0; - GLenum format = 0; - int i, err; - __GLXdrawable *pGlxDraw; - - if (!validGlxDrawable(client, glxDrawableID, GLX_DRAWABLE_PIXMAP, - DixWriteAccess, &pGlxDraw, &err)) - /* We just added it in CreatePixmap, so we should never get here. */ - return; - - for (i = 0; i < numAttribs; i++) { - if (attribs[2 * i] == GLX_TEXTURE_TARGET_EXT) { - switch (attribs[2 * i + 1]) { - case GLX_TEXTURE_2D_EXT: - target = GL_TEXTURE_2D; - break; - case GLX_TEXTURE_RECTANGLE_EXT: - target = GL_TEXTURE_RECTANGLE_ARB; - break; - } - } - - if (attribs[2 * i] == GLX_TEXTURE_FORMAT_EXT) - format = attribs[2 * i + 1]; - } - - if (!target) { - int w = pGlxDraw->pDraw->width, h = pGlxDraw->pDraw->height; - - if (h & (h - 1) || w & (w - 1)) - target = GL_TEXTURE_RECTANGLE_ARB; - else - target = GL_TEXTURE_2D; - } - - pGlxDraw->target = target; - pGlxDraw->format = format; -} - -int __glXDisp_CreateGLXPixmap(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXCreateGLXPixmapReq *req = (xGLXCreateGLXPixmapReq *) pc; - __GLXconfig *config; - __GLXscreen *pGlxScreen; - int err; - - REQUEST_SIZE_MATCH(xGLXCreateGLXPixmapReq); - - if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err)) - return err; - if (!validGlxVisual(cl->client, pGlxScreen, req->visual, &config, &err)) - return err; - - return DoCreateGLXPixmap(cl->client, pGlxScreen, config, - req->pixmap, req->glxpixmap); -} - -int __glXDisp_CreatePixmap(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXCreatePixmapReq *req = (xGLXCreatePixmapReq *) pc; - __GLXconfig *config; - __GLXscreen *pGlxScreen; - int err; - - REQUEST_AT_LEAST_SIZE(xGLXCreatePixmapReq); - if (req->numAttribs > (UINT32_MAX >> 3)) { - client->errorValue = req->numAttribs; - return BadValue; - } - REQUEST_FIXED_SIZE(xGLXCreatePixmapReq, req->numAttribs << 3); - - if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err)) - return err; - if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err)) - return err; - - err = DoCreateGLXPixmap(cl->client, pGlxScreen, config, - req->pixmap, req->glxpixmap); - if (err != Success) - return err; - - determineTextureTarget(cl->client, req->glxpixmap, - (CARD32*) (req + 1), req->numAttribs); - - return Success; -} - -int __glXDisp_CreateGLXPixmapWithConfigSGIX(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXCreateGLXPixmapWithConfigSGIXReq *req = - (xGLXCreateGLXPixmapWithConfigSGIXReq *) pc; - __GLXconfig *config; - __GLXscreen *pGlxScreen; - int err; - - REQUEST_SIZE_MATCH(xGLXCreateGLXPixmapWithConfigSGIXReq); - - if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err)) - return err; - if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err)) - return err; - - return DoCreateGLXPixmap(cl->client, pGlxScreen, - config, req->pixmap, req->glxpixmap); -} - - -static int DoDestroyDrawable(__GLXclientState *cl, XID glxdrawable, int type) -{ - __GLXdrawable *pGlxDraw; - int err; - - if (!validGlxDrawable(cl->client, glxdrawable, type, - DixDestroyAccess, &pGlxDraw, &err)) - return err; - - FreeResource(glxdrawable, FALSE); - - return Success; -} - -int __glXDisp_DestroyGLXPixmap(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXDestroyGLXPixmapReq *req = (xGLXDestroyGLXPixmapReq *) pc; - - REQUEST_SIZE_MATCH(xGLXDestroyGLXPixmapReq); - - return DoDestroyDrawable(cl, req->glxpixmap, GLX_DRAWABLE_PIXMAP); -} - -int __glXDisp_DestroyPixmap(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXDestroyPixmapReq *req = (xGLXDestroyPixmapReq *) pc; - - REQUEST_SIZE_MATCH(xGLXDestroyPixmapReq); - - return DoDestroyDrawable(cl, req->glxpixmap, GLX_DRAWABLE_PIXMAP); -} - -static int -DoCreatePbuffer(ClientPtr client, int screenNum, XID fbconfigId, - int width, int height, XID glxDrawableId) -{ - __GLXconfig *config; - __GLXscreen *pGlxScreen; - PixmapPtr pPixmap; - int err; - - LEGAL_NEW_RESOURCE(glxDrawableId, client); - - if (!validGlxScreen(client, screenNum, &pGlxScreen, &err)) - return err; - if (!validGlxFBConfig(client, pGlxScreen, fbconfigId, &config, &err)) - return err; - - __glXenterServer(GL_FALSE); - pPixmap = (*pGlxScreen->pScreen->CreatePixmap) (pGlxScreen->pScreen, - width, height, config->rgbBits, 0); - __glXleaveServer(GL_FALSE); - - /* Assign the pixmap the same id as the pbuffer and add it as a - * resource so it and the DRI2 drawable will be reclaimed when the - * pbuffer is destroyed. */ - pPixmap->drawable.id = glxDrawableId; - if (!AddResource(pPixmap->drawable.id, RT_PIXMAP, pPixmap)) - return BadAlloc; - - return DoCreateGLXDrawable(client, pGlxScreen, config, &pPixmap->drawable, - glxDrawableId, glxDrawableId, - GLX_DRAWABLE_PBUFFER); -} - -int __glXDisp_CreatePbuffer(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXCreatePbufferReq *req = (xGLXCreatePbufferReq *) pc; - CARD32 *attrs; - int width, height, i; - - REQUEST_AT_LEAST_SIZE(xGLXCreatePbufferReq); - if (req->numAttribs > (UINT32_MAX >> 3)) { - client->errorValue = req->numAttribs; - return BadValue; - } - REQUEST_FIXED_SIZE(xGLXCreatePbufferReq, req->numAttribs << 3); - - attrs = (CARD32 *) (req + 1); - width = 0; - height = 0; - - for (i = 0; i < req->numAttribs; i++) { - switch (attrs[i * 2]) { - case GLX_PBUFFER_WIDTH: - width = attrs[i * 2 + 1]; - break; - case GLX_PBUFFER_HEIGHT: - height = attrs[i * 2 + 1]; - break; - case GLX_LARGEST_PBUFFER: - case GLX_PRESERVED_CONTENTS: - /* FIXME: huh... */ - break; - } - } - - return DoCreatePbuffer(cl->client, req->screen, req->fbconfig, - width, height, req->pbuffer); -} - -int __glXDisp_CreateGLXPbufferSGIX(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXCreateGLXPbufferSGIXReq *req = (xGLXCreateGLXPbufferSGIXReq *) pc; - - REQUEST_SIZE_MATCH(xGLXCreateGLXPbufferSGIXReq); - - return DoCreatePbuffer(cl->client, req->screen, req->fbconfig, - req->width, req->height, req->pbuffer); -} - -int __glXDisp_DestroyPbuffer(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXDestroyPbufferReq *req = (xGLXDestroyPbufferReq *) pc; - - REQUEST_SIZE_MATCH(xGLXDestroyPbufferReq); - - return DoDestroyDrawable(cl, req->pbuffer, GLX_DRAWABLE_PBUFFER); -} - -int __glXDisp_DestroyGLXPbufferSGIX(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXDestroyGLXPbufferSGIXReq *req = (xGLXDestroyGLXPbufferSGIXReq *) pc; - - REQUEST_SIZE_MATCH(xGLXDestroyGLXPbufferSGIXReq); - - return DoDestroyDrawable(cl, req->pbuffer, GLX_DRAWABLE_PBUFFER); -} - -static int -DoChangeDrawableAttributes(ClientPtr client, XID glxdrawable, - int numAttribs, CARD32 *attribs) -{ - __GLXdrawable *pGlxDraw; - int i, err; - - if (!validGlxDrawable(client, glxdrawable, GLX_DRAWABLE_ANY, - DixSetAttrAccess, &pGlxDraw, &err)) - return err; - - for (i = 0; i < numAttribs; i++) { - switch(attribs[i * 2]) { - case GLX_EVENT_MASK: - /* All we do is to record the event mask so we can send it - * back when queried. We never actually clobber the - * pbuffers, so we never need to send out the event. */ - pGlxDraw->eventMask = attribs[i * 2 + 1]; - break; - } - } - - return Success; -} - -int __glXDisp_ChangeDrawableAttributes(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXChangeDrawableAttributesReq *req = - (xGLXChangeDrawableAttributesReq *) pc; - - REQUEST_AT_LEAST_SIZE(xGLXChangeDrawableAttributesReq); - if (req->numAttribs > (UINT32_MAX >> 3)) { - client->errorValue = req->numAttribs; - return BadValue; - } - REQUEST_FIXED_SIZE(xGLXChangeDrawableAttributesReq, req->numAttribs << 3); - - return DoChangeDrawableAttributes(cl->client, req->drawable, - req->numAttribs, (CARD32 *) (req + 1)); -} - -int __glXDisp_ChangeDrawableAttributesSGIX(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXChangeDrawableAttributesSGIXReq *req = - (xGLXChangeDrawableAttributesSGIXReq *)pc; - - REQUEST_AT_LEAST_SIZE(xGLXChangeDrawableAttributesSGIXReq); - if (req->numAttribs > (UINT32_MAX >> 3)) { - client->errorValue = req->numAttribs; - return BadValue; - } - REQUEST_FIXED_SIZE(xGLXChangeDrawableAttributesSGIXReq, req->numAttribs << 3); - - return DoChangeDrawableAttributes(cl->client, req->drawable, - req->numAttribs, (CARD32 *) (req + 1)); -} - -int __glXDisp_CreateWindow(__GLXclientState *cl, GLbyte *pc) -{ - xGLXCreateWindowReq *req = (xGLXCreateWindowReq *) pc; - __GLXconfig *config; - __GLXscreen *pGlxScreen; - ClientPtr client = cl->client; - DrawablePtr pDraw; - int err; - - REQUEST_AT_LEAST_SIZE(xGLXCreateWindowReq); - if (req->numAttribs > (UINT32_MAX >> 3)) { - client->errorValue = req->numAttribs; - return BadValue; - } - REQUEST_FIXED_SIZE(xGLXCreateWindowReq, req->numAttribs << 3); - - LEGAL_NEW_RESOURCE(req->glxwindow, client); - - if (!validGlxScreen(client, req->screen, &pGlxScreen, &err)) - return err; - if (!validGlxFBConfig(client, pGlxScreen, req->fbconfig, &config, &err)) - return err; - - err = dixLookupDrawable(&pDraw, req->window, client, 0, DixAddAccess); - if (err != Success || pDraw->type != DRAWABLE_WINDOW) { - client->errorValue = req->window; - return BadWindow; - } - - if (!validGlxFBConfigForWindow(client, config, pDraw, &err)) - return err; - - return DoCreateGLXDrawable(client, pGlxScreen, config, - pDraw, req->window, - req->glxwindow, GLX_DRAWABLE_WINDOW); -} - -int __glXDisp_DestroyWindow(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXDestroyWindowReq *req = (xGLXDestroyWindowReq *) pc; - - REQUEST_SIZE_MATCH(xGLXDestroyWindowReq); - - return DoDestroyDrawable(cl, req->glxwindow, GLX_DRAWABLE_WINDOW); -} - - -/*****************************************************************************/ - -/* -** NOTE: There is no portable implementation for swap buffers as of -** this time that is of value. Consequently, this code must be -** implemented by somebody other than SGI. -*/ -int __glXDisp_SwapBuffers(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXSwapBuffersReq *req = (xGLXSwapBuffersReq *) pc; - GLXContextTag tag; - XID drawId; - __GLXcontext *glxc = NULL; - __GLXdrawable *pGlxDraw; - int error; - - REQUEST_SIZE_MATCH(xGLXSwapBuffersReq); - - tag = req->contextTag; - drawId = req->drawable; - if (tag) { - glxc = __glXLookupContextByTag(cl, tag); - if (!glxc) { - return __glXError(GLXBadContextTag); - } - /* - ** The calling thread is swapping its current drawable. In this case, - ** glxSwapBuffers is in both GL and X streams, in terms of - ** sequentiality. - */ - if (__glXForceCurrent(cl, tag, &error)) { - /* - ** Do whatever is needed to make sure that all preceding requests - ** in both streams are completed before the swap is executed. - */ - CALL_Finish( GET_DISPATCH(), () ); - __GLX_NOTE_FLUSHED_CMDS(glxc); - } else { - return error; - } - } - - pGlxDraw = __glXGetDrawable(glxc, drawId, client, &error); - if (pGlxDraw == NULL) - return error; - - if (pGlxDraw->type == DRAWABLE_WINDOW && - (*pGlxDraw->swapBuffers)(cl->client, pGlxDraw) == GL_FALSE) - return __glXError(GLXBadDrawable); - - return Success; -} - - -static int -DoQueryContext(__GLXclientState *cl, GLXContextID gcId) -{ - ClientPtr client = cl->client; - __GLXcontext *ctx; - xGLXQueryContextInfoEXTReply reply; - int nProps; - int *sendBuf, *pSendBuf; - int nReplyBytes; - int err; - - if (!validGlxContext(cl->client, gcId, DixReadAccess, &ctx, &err)) - return err; - - nProps = 3; - reply.length = nProps << 1; - reply.type = X_Reply; - reply.sequenceNumber = client->sequence; - reply.n = nProps; - - nReplyBytes = reply.length << 2; - sendBuf = (int *)malloc((size_t)nReplyBytes); - if (sendBuf == NULL) { - return __glXError(GLXBadContext); /* XXX: Is this correct? */ - } - pSendBuf = sendBuf; - *pSendBuf++ = GLX_SHARE_CONTEXT_EXT; - *pSendBuf++ = (int)(ctx->share_id); - *pSendBuf++ = GLX_VISUAL_ID_EXT; - *pSendBuf++ = (int)(ctx->config->visualID); - *pSendBuf++ = GLX_SCREEN_EXT; - *pSendBuf++ = (int)(ctx->pGlxScreen->pScreen->myNum); - - if (client->swapped) { - __glXSwapQueryContextInfoEXTReply(client, &reply, sendBuf); - } else { - WriteToClient(client, sz_xGLXQueryContextInfoEXTReply, (char *)&reply); - WriteToClient(client, nReplyBytes, (char *)sendBuf); - } - free((char *)sendBuf); - - return Success; -} - -int __glXDisp_QueryContextInfoEXT(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXQueryContextInfoEXTReq *req = (xGLXQueryContextInfoEXTReq *) pc; - - REQUEST_SIZE_MATCH(xGLXQueryContextInfoEXTReq); - - return DoQueryContext(cl, req->context); -} - -int __glXDisp_QueryContext(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXQueryContextReq *req = (xGLXQueryContextReq *) pc; - - REQUEST_SIZE_MATCH(xGLXQueryContextReq); - - return DoQueryContext(cl, req->context); -} - -int __glXDisp_BindTexImageEXT(__GLXclientState *cl, GLbyte *pc) -{ - xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc; - ClientPtr client = cl->client; - __GLXcontext *context; - __GLXdrawable *pGlxDraw; - GLXDrawable drawId; - int buffer; - int error; - - REQUEST_FIXED_SIZE(xGLXVendorPrivateReq, 8); - - pc += __GLX_VENDPRIV_HDR_SIZE; - - drawId = *((CARD32 *) (pc)); - buffer = *((INT32 *) (pc + 4)); - - if (buffer != GLX_FRONT_LEFT_EXT) - return __glXError(GLXBadPixmap); - - context = __glXForceCurrent (cl, req->contextTag, &error); - if (!context) - return error; - - if (!validGlxDrawable(client, drawId, GLX_DRAWABLE_PIXMAP, - DixReadAccess, &pGlxDraw, &error)) - return error; - - if (!context->textureFromPixmap) - return __glXError(GLXUnsupportedPrivateRequest); - - return context->textureFromPixmap->bindTexImage(context, - buffer, - pGlxDraw); -} - -int __glXDisp_ReleaseTexImageEXT(__GLXclientState *cl, GLbyte *pc) -{ - xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc; - ClientPtr client = cl->client; - __GLXdrawable *pGlxDraw; - __GLXcontext *context; - GLXDrawable drawId; - int buffer; - int error; - - REQUEST_FIXED_SIZE(xGLXVendorPrivateReq, 8); - - pc += __GLX_VENDPRIV_HDR_SIZE; - - drawId = *((CARD32 *) (pc)); - buffer = *((INT32 *) (pc + 4)); - - context = __glXForceCurrent (cl, req->contextTag, &error); - if (!context) - return error; - - if (!validGlxDrawable(client, drawId, GLX_DRAWABLE_PIXMAP, - DixReadAccess, &pGlxDraw, &error)) - return error; - - if (!context->textureFromPixmap) - return __glXError(GLXUnsupportedPrivateRequest); - - return context->textureFromPixmap->releaseTexImage(context, - buffer, - pGlxDraw); -} - -int __glXDisp_CopySubBufferMESA(__GLXclientState *cl, GLbyte *pc) -{ - xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc; - GLXContextTag tag = req->contextTag; - __GLXcontext *glxc = NULL; - __GLXdrawable *pGlxDraw; - ClientPtr client = cl->client; - GLXDrawable drawId; - int error; - int x, y, width, height; - - (void) client; - (void) req; - - REQUEST_FIXED_SIZE(xGLXVendorPrivateReq, 20); - - pc += __GLX_VENDPRIV_HDR_SIZE; - - drawId = *((CARD32 *) (pc)); - x = *((INT32 *) (pc + 4)); - y = *((INT32 *) (pc + 8)); - width = *((INT32 *) (pc + 12)); - height = *((INT32 *) (pc + 16)); - - if (tag) { - glxc = __glXLookupContextByTag(cl, tag); - if (!glxc) { - return __glXError(GLXBadContextTag); - } - /* - ** The calling thread is swapping its current drawable. In this case, - ** glxSwapBuffers is in both GL and X streams, in terms of - ** sequentiality. - */ - if (__glXForceCurrent(cl, tag, &error)) { - /* - ** Do whatever is needed to make sure that all preceding requests - ** in both streams are completed before the swap is executed. - */ - CALL_Finish( GET_DISPATCH(), () ); - __GLX_NOTE_FLUSHED_CMDS(glxc); - } else { - return error; - } - } - - pGlxDraw = __glXGetDrawable(glxc, drawId, client, &error); - if (!pGlxDraw) - return error; - - if (pGlxDraw == NULL || - pGlxDraw->type != GLX_DRAWABLE_WINDOW || - pGlxDraw->copySubBuffer == NULL) - return __glXError(GLXBadDrawable); - - (*pGlxDraw->copySubBuffer)(pGlxDraw, x, y, width, height); - - return Success; -} - -/* -** Get drawable attributes -*/ -static int -DoGetDrawableAttributes(__GLXclientState *cl, XID drawId) -{ - ClientPtr client = cl->client; - xGLXGetDrawableAttributesReply reply; - __GLXdrawable *pGlxDraw; - CARD32 attributes[6]; - int numAttribs, error; - - if (!validGlxDrawable(client, drawId, GLX_DRAWABLE_ANY, - DixGetAttrAccess, &pGlxDraw, &error)) - return error; - - numAttribs = 3; - reply.length = numAttribs << 1; - reply.type = X_Reply; - reply.sequenceNumber = client->sequence; - reply.numAttribs = numAttribs; - - attributes[0] = GLX_TEXTURE_TARGET_EXT; - attributes[1] = pGlxDraw->target == GL_TEXTURE_2D ? GLX_TEXTURE_2D_EXT : - GLX_TEXTURE_RECTANGLE_EXT; - attributes[2] = GLX_Y_INVERTED_EXT; - attributes[3] = GL_FALSE; - attributes[4] = GLX_EVENT_MASK; - attributes[5] = pGlxDraw->eventMask; - - if (client->swapped) { - __glXSwapGetDrawableAttributesReply(client, &reply, attributes); - } else { - WriteToClient(client, sz_xGLXGetDrawableAttributesReply, - (char *)&reply); - WriteToClient(client, reply.length * sizeof (CARD32), - (char *)attributes); - } - - return Success; -} - -int __glXDisp_GetDrawableAttributes(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXGetDrawableAttributesReq *req = (xGLXGetDrawableAttributesReq *)pc; - - REQUEST_SIZE_MATCH(xGLXGetDrawableAttributesReq); - - return DoGetDrawableAttributes(cl, req->drawable); -} - -int __glXDisp_GetDrawableAttributesSGIX(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXGetDrawableAttributesSGIXReq *req = - (xGLXGetDrawableAttributesSGIXReq *)pc; - - REQUEST_SIZE_MATCH(xGLXGetDrawableAttributesSGIXReq); - - return DoGetDrawableAttributes(cl, req->drawable); -} - -/************************************************************************/ - -/* -** Render and Renderlarge are not in the GLX API. They are used by the GLX -** client library to send batches of GL rendering commands. -*/ - -/* -** Execute all the drawing commands in a request. -*/ -int __glXDisp_Render(__GLXclientState *cl, GLbyte *pc) -{ - xGLXRenderReq *req; - ClientPtr client= cl->client; - int left, cmdlen, error; - int commandsDone; - CARD16 opcode; - __GLXrenderHeader *hdr; - __GLXcontext *glxc; - __GLX_DECLARE_SWAP_VARIABLES; - - REQUEST_AT_LEAST_SIZE(xGLXRenderReq); - - req = (xGLXRenderReq *) pc; - if (client->swapped) { - __GLX_SWAP_SHORT(&req->length); - __GLX_SWAP_INT(&req->contextTag); - } - - glxc = __glXForceCurrent(cl, req->contextTag, &error); - if (!glxc) { - return error; - } - - commandsDone = 0; - pc += sz_xGLXRenderReq; - left = (req->length << 2) - sz_xGLXRenderReq; - while (left > 0) { - __GLXrenderSizeData entry; - int extra; - __GLXdispatchRenderProcPtr proc; - int err; - - if (left < sizeof(__GLXrenderHeader)) - return BadLength; - - /* - ** Verify that the header length and the overall length agree. - ** Also, each command must be word aligned. - */ - hdr = (__GLXrenderHeader *) pc; - if (client->swapped) { - __GLX_SWAP_SHORT(&hdr->length); - __GLX_SWAP_SHORT(&hdr->opcode); - } - cmdlen = hdr->length; - opcode = hdr->opcode; - - /* - ** Check for core opcodes and grab entry data. - */ - err = __glXGetProtocolSizeData(& Render_dispatch_info, opcode, & entry); - proc = (__GLXdispatchRenderProcPtr) - __glXGetProtocolDecodeFunction(& Render_dispatch_info, - opcode, client->swapped); - - if ((err < 0) || (proc == NULL)) { - client->errorValue = commandsDone; - return __glXError(GLXBadRenderRequest); - } - - if (entry.varsize) { - /* variable size command */ - extra = (*entry.varsize)(pc + __GLX_RENDER_HDR_SIZE, - client->swapped); - if (extra < 0) { - extra = 0; - } - if (cmdlen != __GLX_PAD(entry.bytes + extra)) { - return BadLength; - } - } else { - /* constant size command */ - if (cmdlen != __GLX_PAD(entry.bytes)) { - return BadLength; - } - } - if (left < cmdlen) { - return BadLength; - } - - /* - ** Skip over the header and execute the command. We allow the - ** caller to trash the command memory. This is useful especially - ** for things that require double alignment - they can just shift - ** the data towards lower memory (trashing the header) by 4 bytes - ** and achieve the required alignment. - */ - (*proc)(pc + __GLX_RENDER_HDR_SIZE); - pc += cmdlen; - left -= cmdlen; - commandsDone++; - } - __GLX_NOTE_UNFLUSHED_CMDS(glxc); - return Success; -} - - -/* -** Execute a large rendering request (one that spans multiple X requests). -*/ -int __glXDisp_RenderLarge(__GLXclientState *cl, GLbyte *pc) -{ - xGLXRenderLargeReq *req; - ClientPtr client= cl->client; - size_t dataBytes; - __GLXrenderLargeHeader *hdr; - __GLXcontext *glxc; - int error; - CARD16 opcode; - __GLX_DECLARE_SWAP_VARIABLES; - - req = (xGLXRenderLargeReq *) pc; - if (client->swapped) { - __GLX_SWAP_SHORT(&req->length); - __GLX_SWAP_INT(&req->contextTag); - __GLX_SWAP_INT(&req->dataBytes); - __GLX_SWAP_SHORT(&req->requestNumber); - __GLX_SWAP_SHORT(&req->requestTotal); - } - - glxc = __glXForceCurrent(cl, req->contextTag, &error); - if (!glxc) { - /* Reset in case this isn't 1st request. */ - __glXResetLargeCommandStatus(cl); - return error; - } - dataBytes = req->dataBytes; - - /* - ** Check the request length. - */ - if ((req->length << 2) != __GLX_PAD(dataBytes) + sz_xGLXRenderLargeReq) { - client->errorValue = req->length; - /* Reset in case this isn't 1st request. */ - __glXResetLargeCommandStatus(cl); - return BadLength; - } - pc += sz_xGLXRenderLargeReq; - - if (cl->largeCmdRequestsSoFar == 0) { - __GLXrenderSizeData entry; - int extra; - size_t cmdlen; - int err; - - /* - ** This is the first request of a multi request command. - ** Make enough space in the buffer, then copy the entire request. - */ - if (req->requestNumber != 1) { - client->errorValue = req->requestNumber; - return __glXError(GLXBadLargeRequest); - } - - hdr = (__GLXrenderLargeHeader *) pc; - if (client->swapped) { - __GLX_SWAP_INT(&hdr->length); - __GLX_SWAP_INT(&hdr->opcode); - } - cmdlen = hdr->length; - opcode = hdr->opcode; - - /* - ** Check for core opcodes and grab entry data. - */ - err = __glXGetProtocolSizeData(& Render_dispatch_info, opcode, & entry); - if (err < 0) { - client->errorValue = opcode; - return __glXError(GLXBadLargeRequest); - } - - if (entry.varsize) { - /* - ** If it's a variable-size command (a command whose length must - ** be computed from its parameters), all the parameters needed - ** will be in the 1st request, so it's okay to do this. - */ - extra = (*entry.varsize)(pc + __GLX_RENDER_LARGE_HDR_SIZE, - client->swapped); - if (extra < 0) { - extra = 0; - } - /* large command's header is 4 bytes longer, so add 4 */ - if (cmdlen != __GLX_PAD(entry.bytes + 4 + extra)) { - return BadLength; - } - } else { - /* constant size command */ - if (cmdlen != __GLX_PAD(entry.bytes + 4)) { - return BadLength; - } - } - /* - ** Make enough space in the buffer, then copy the entire request. - */ - if (cl->largeCmdBufSize < cmdlen) { - if (!cl->largeCmdBuf) { - cl->largeCmdBuf = (GLbyte *) malloc(cmdlen); - } else { - cl->largeCmdBuf = (GLbyte *) realloc(cl->largeCmdBuf, cmdlen); - } - if (!cl->largeCmdBuf) { - return BadAlloc; - } - cl->largeCmdBufSize = cmdlen; - } - memcpy(cl->largeCmdBuf, pc, dataBytes); - - cl->largeCmdBytesSoFar = dataBytes; - cl->largeCmdBytesTotal = cmdlen; - cl->largeCmdRequestsSoFar = 1; - cl->largeCmdRequestsTotal = req->requestTotal; - return Success; - - } else { - /* - ** We are receiving subsequent (i.e. not the first) requests of a - ** multi request command. - */ - - /* - ** Check the request number and the total request count. - */ - if (req->requestNumber != cl->largeCmdRequestsSoFar + 1) { - client->errorValue = req->requestNumber; - __glXResetLargeCommandStatus(cl); - return __glXError(GLXBadLargeRequest); - } - if (req->requestTotal != cl->largeCmdRequestsTotal) { - client->errorValue = req->requestTotal; - __glXResetLargeCommandStatus(cl); - return __glXError(GLXBadLargeRequest); - } - - /* - ** Check that we didn't get too much data. - */ - if ((cl->largeCmdBytesSoFar + dataBytes) > cl->largeCmdBytesTotal) { - client->errorValue = dataBytes; - __glXResetLargeCommandStatus(cl); - return __glXError(GLXBadLargeRequest); - } - memcpy(cl->largeCmdBuf + cl->largeCmdBytesSoFar, pc, dataBytes); - cl->largeCmdBytesSoFar += dataBytes; - cl->largeCmdRequestsSoFar++; - - if (req->requestNumber == cl->largeCmdRequestsTotal) { - __GLXdispatchRenderProcPtr proc; - - /* - ** This is the last request; it must have enough bytes to complete - ** the command. - */ - /* NOTE: the two pad macros have been added below; they are needed - ** because the client library pads the total byte count, but not - ** the per-request byte counts. The Protocol Encoding says the - ** total byte count should not be padded, so a proposal will be - ** made to the ARB to relax the padding constraint on the total - ** byte count, thus preserving backward compatibility. Meanwhile, - ** the padding done below fixes a bug that did not allow - ** large commands of odd sizes to be accepted by the server. - */ - if (__GLX_PAD(cl->largeCmdBytesSoFar) != - __GLX_PAD(cl->largeCmdBytesTotal)) { - client->errorValue = dataBytes; - __glXResetLargeCommandStatus(cl); - return __glXError(GLXBadLargeRequest); - } - hdr = (__GLXrenderLargeHeader *) cl->largeCmdBuf; - /* - ** The opcode and length field in the header had already been - ** swapped when the first request was received. - ** - ** Use the opcode to index into the procedure table. - */ - opcode = hdr->opcode; - - proc = (__GLXdispatchRenderProcPtr) - __glXGetProtocolDecodeFunction(& Render_dispatch_info, opcode, - client->swapped); - if (proc == NULL) { - client->errorValue = opcode; - return __glXError(GLXBadLargeRequest); - } - - /* - ** Skip over the header and execute the command. - */ - (*proc)(cl->largeCmdBuf + __GLX_RENDER_LARGE_HDR_SIZE); - __GLX_NOTE_UNFLUSHED_CMDS(glxc); - - /* - ** Reset for the next RenderLarge series. - */ - __glXResetLargeCommandStatus(cl); - } else { - /* - ** This is neither the first nor the last request. - */ - } - return Success; - } -} - -/************************************************************************/ - -/* -** No support is provided for the vendor-private requests other than -** allocating the entry points in the dispatch table. -*/ - -int __glXDisp_VendorPrivate(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc; - GLint vendorcode = req->vendorCode; - __GLXdispatchVendorPrivProcPtr proc; - - REQUEST_AT_LEAST_SIZE(xGLXVendorPrivateReq); - - proc = (__GLXdispatchVendorPrivProcPtr) - __glXGetProtocolDecodeFunction(& VendorPriv_dispatch_info, - vendorcode, 0); - if (proc != NULL) { - (*proc)(cl, (GLbyte*)req); - return Success; - } - - cl->client->errorValue = req->vendorCode; - return __glXError(GLXUnsupportedPrivateRequest); -} - -int __glXDisp_VendorPrivateWithReply(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc; - GLint vendorcode = req->vendorCode; - __GLXdispatchVendorPrivProcPtr proc; - - REQUEST_AT_LEAST_SIZE(xGLXVendorPrivateReq); - - proc = (__GLXdispatchVendorPrivProcPtr) - __glXGetProtocolDecodeFunction(& VendorPriv_dispatch_info, - vendorcode, 0); - if (proc != NULL) { - return (*proc)(cl, (GLbyte*)req); - } - - cl->client->errorValue = vendorcode; - return __glXError(GLXUnsupportedPrivateRequest); -} - -int __glXDisp_QueryExtensionsString(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXQueryExtensionsStringReq *req = (xGLXQueryExtensionsStringReq *) pc; - xGLXQueryExtensionsStringReply reply; - __GLXscreen *pGlxScreen; - size_t n, length; - char *buf; - int err; - - REQUEST_SIZE_MATCH(xGLXQueryExtensionsStringReq); - - if (!validGlxScreen(client, req->screen, &pGlxScreen, &err)) - return err; - - n = strlen(pGlxScreen->GLXextensions) + 1; - length = __GLX_PAD(n) >> 2; - reply.type = X_Reply; - reply.sequenceNumber = client->sequence; - reply.length = length; - reply.n = n; - - /* Allocate buffer to make sure it's a multiple of 4 bytes big.*/ - buf = (char *) malloc(length << 2); - if (buf == NULL) - return BadAlloc; - memcpy(buf, pGlxScreen->GLXextensions, n); - - if (client->swapped) { - glxSwapQueryExtensionsStringReply(client, &reply, buf); - } else { - WriteToClient(client, sz_xGLXQueryExtensionsStringReply,(char *)&reply); - WriteToClient(client, (int)(length << 2), (char *)buf); - } - - free(buf); - return Success; -} - -int __glXDisp_QueryServerString(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXQueryServerStringReq *req = (xGLXQueryServerStringReq *) pc; - xGLXQueryServerStringReply reply; - size_t n, length; - const char *ptr; - char *buf; - __GLXscreen *pGlxScreen; - int err; - char ver_str[16]; - - REQUEST_SIZE_MATCH(xGLXQueryServerStringReq); - - if (!validGlxScreen(client, req->screen, &pGlxScreen, &err)) - return err; - - switch(req->name) { - case GLX_VENDOR: - ptr = pGlxScreen->GLXvendor; - break; - case GLX_VERSION: - /* Return to the server version rather than the screen version - * to prevent confusion when they do not match. - */ - snprintf(ver_str, 16, "%d.%d", glxMajorVersion, glxMinorVersion); - ptr = ver_str; - break; - case GLX_EXTENSIONS: - ptr = pGlxScreen->GLXextensions; - break; - default: - return BadValue; - } - - n = strlen(ptr) + 1; - length = __GLX_PAD(n) >> 2; - reply.type = X_Reply; - reply.sequenceNumber = client->sequence; - reply.length = length; - reply.n = n; - - buf = (char *) malloc(length << 2); - if (buf == NULL) { - return BadAlloc; - } - memcpy(buf, ptr, n); - - if (client->swapped) { - glxSwapQueryServerStringReply(client, &reply, buf); - } else { - WriteToClient(client, sz_xGLXQueryServerStringReply, (char *)&reply); - WriteToClient(client, (int)(length << 2), buf); - } - - free(buf); - return Success; -} - -int __glXDisp_ClientInfo(__GLXclientState *cl, GLbyte *pc) -{ - ClientPtr client = cl->client; - xGLXClientInfoReq *req = (xGLXClientInfoReq *) pc; - const char *buf; - - REQUEST_AT_LEAST_SIZE(xGLXClientInfoReq); - - buf = (const char *)(req+1); - if (!memchr(buf, 0, (client->req_len << 2) - sizeof(xGLXClientInfoReq))) - return BadLength; - - cl->GLClientmajorVersion = req->major; - cl->GLClientminorVersion = req->minor; - free(cl->GLClientextensions); - cl->GLClientextensions = strdup(buf); - - return Success; -} +/*
+ * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
+ * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice including the dates of first publication and
+ * either this permission notice or a reference to
+ * http://oss.sgi.com/projects/FreeB/
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Silicon Graphics, Inc.
+ * shall not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization from
+ * Silicon Graphics, Inc.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <string.h>
+#include <assert.h>
+
+#include "glxserver.h"
+#include <GL/glxtokens.h>
+#include <unpack.h>
+#include <pixmapstr.h>
+#include <windowstr.h>
+#include "glxutil.h"
+#include "glxext.h"
+#include "glapitable.h"
+#include "glapi.h"
+#include "glthread.h"
+#include "dispatch.h"
+#include "indirect_dispatch.h"
+#include "indirect_table.h"
+#include "indirect_util.h"
+
+static int
+validGlxScreen(ClientPtr client, int screen, __GLXscreen **pGlxScreen, int *err)
+{
+ /*
+ ** Check if screen exists.
+ */
+ if (screen < 0 || screen >= screenInfo.numScreens) {
+ client->errorValue = screen;
+ *err = BadValue;
+ return FALSE;
+ }
+ *pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
+
+ return TRUE;
+}
+
+static int
+validGlxFBConfig(ClientPtr client, __GLXscreen *pGlxScreen, XID id,
+ __GLXconfig **config, int *err)
+{
+ __GLXconfig *m;
+
+ for (m = pGlxScreen->fbconfigs; m != NULL; m = m->next)
+ if (m->fbconfigID == id) {
+ *config = m;
+ return TRUE;
+ }
+
+ client->errorValue = id;
+ *err = __glXError(GLXBadFBConfig);
+
+ return FALSE;
+}
+
+static int
+validGlxVisual(ClientPtr client, __GLXscreen *pGlxScreen, XID id,
+ __GLXconfig **config, int *err)
+{
+ int i;
+
+ for (i = 0; i < pGlxScreen->numVisuals; i++)
+ if (pGlxScreen->visuals[i]->visualID == id) {
+ *config = pGlxScreen->visuals[i];
+ return TRUE;
+ }
+
+ client->errorValue = id;
+ *err = BadValue;
+
+ return FALSE;
+}
+
+static int
+validGlxFBConfigForWindow(ClientPtr client, __GLXconfig *config,
+ DrawablePtr pDraw, int *err)
+{
+ ScreenPtr pScreen = pDraw->pScreen;
+ VisualPtr pVisual = NULL;
+ XID vid;
+ int i;
+
+ vid = wVisual((WindowPtr)pDraw);
+ for (i = 0; i < pScreen->numVisuals; i++) {
+ if (pScreen->visuals[i].vid == vid) {
+ pVisual = &pScreen->visuals[i];
+ break;
+ }
+ }
+
+ /* FIXME: What exactly should we check here... */
+ if (pVisual->class != glxConvertToXVisualType(config->visualType) ||
+ !(config->drawableType & GLX_WINDOW_BIT)) {
+ client->errorValue = pDraw->id;
+ *err = BadMatch;
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static int
+validGlxContext(ClientPtr client, XID id, int access_mode,
+ __GLXcontext **context, int *err)
+{
+ *err = dixLookupResourceByType((pointer *) context, id,
+ __glXContextRes, client, access_mode);
+ if (*err != Success) {
+ client->errorValue = id;
+ if (*err == BadValue)
+ *err = __glXError(GLXBadContext);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static int
+validGlxDrawable(ClientPtr client, XID id, int type, int access_mode,
+ __GLXdrawable **drawable, int *err)
+{
+ int rc;
+
+ rc = dixLookupResourceByType((pointer *) drawable, id,
+ __glXDrawableRes, client, access_mode);
+ if (rc != Success && rc != BadValue) {
+ *err = rc;
+ client->errorValue = id;
+ return FALSE;
+ }
+
+ /* If the ID of the glx drawable we looked up doesn't match the id
+ * we looked for, it's because we looked it up under the X
+ * drawable ID (see DoCreateGLXDrawable). */
+ if (rc == BadValue ||
+ (*drawable)->drawId != id ||
+ (type != GLX_DRAWABLE_ANY && type != (*drawable)->type)) {
+ client->errorValue = id;
+ switch (type) {
+ case GLX_DRAWABLE_WINDOW:
+ *err = __glXError(GLXBadWindow);
+ return FALSE;
+ case GLX_DRAWABLE_PIXMAP:
+ *err = __glXError(GLXBadPixmap);
+ return FALSE;
+ case GLX_DRAWABLE_PBUFFER:
+ *err = __glXError(GLXBadPbuffer);
+ return FALSE;
+ case GLX_DRAWABLE_ANY:
+ *err = __glXError(GLXBadDrawable);
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+
+void
+__glXContextDestroy(__GLXcontext *context)
+{
+ __glXFlushContextCache();
+}
+
+static void __glXdirectContextDestroy(__GLXcontext *context)
+{
+ __glXContextDestroy(context);
+ free(context);
+}
+
+static __GLXcontext *__glXdirectContextCreate(__GLXscreen *screen,
+ __GLXconfig *modes,
+ __GLXcontext *shareContext)
+{
+ __GLXcontext *context;
+
+ context = calloc(1, sizeof (__GLXcontext));
+ if (context == NULL)
+ return NULL;
+
+ context->destroy = __glXdirectContextDestroy;
+
+ return context;
+}
+
+/**
+ * Create a GL context with the given properties. This routine is used
+ * to implement \c glXCreateContext, \c glXCreateNewContext, and
+ * \c glXCreateContextWithConfigSGIX. This works becuase of the hack way
+ * that GLXFBConfigs are implemented. Basically, the FBConfigID is the
+ * same as the VisualID.
+ */
+
+static int
+DoCreateContext(__GLXclientState *cl, GLXContextID gcId,
+ GLXContextID shareList, __GLXconfig *config,
+ __GLXscreen *pGlxScreen, GLboolean isDirect)
+{
+ ClientPtr client = cl->client;
+ __GLXcontext *glxc, *shareglxc;
+ int err;
+
+ LEGAL_NEW_RESOURCE(gcId, client);
+
+ /*
+ ** Find the display list space that we want to share.
+ **
+ ** NOTE: In a multithreaded X server, we would need to keep a reference
+ ** count for each display list so that if one client detroyed a list that
+ ** another client was using, the list would not really be freed until it
+ ** was no longer in use. Since this sample implementation has no support
+ ** for multithreaded servers, we don't do this.
+ */
+ if (shareList == None) {
+ shareglxc = 0;
+ } else {
+ if (!validGlxContext(client, shareList, DixReadAccess,
+ &shareglxc, &err))
+ return err;
+
+ if (shareglxc->isDirect) {
+ /*
+ ** NOTE: no support for sharing display lists between direct
+ ** contexts, even if they are in the same address space.
+ */
+#if 0
+ /* Disabling this code seems to allow shared display lists
+ * and texture objects to work. We'll leave it disabled for now.
+ */
+ client->errorValue = shareList;
+ return BadMatch;
+#endif
+ } else {
+ /*
+ ** Create an indirect context regardless of what the client asked
+ ** for; this way we can share display list space with shareList.
+ */
+ isDirect = GL_FALSE;
+ }
+ }
+
+ /*
+ ** Allocate memory for the new context
+ */
+ if (!isDirect)
+ glxc = pGlxScreen->createContext(pGlxScreen, config, shareglxc);
+ else
+ glxc = __glXdirectContextCreate(pGlxScreen, config, shareglxc);
+ if (!glxc) {
+ return BadAlloc;
+ }
+
+ /*
+ ** Initially, setup the part of the context that could be used by
+ ** a GL core that needs windowing information (e.g., Mesa).
+ */
+ glxc->pGlxScreen = pGlxScreen;
+ glxc->config = config;
+
+ /*
+ ** Register this context as a resource.
+ */
+ if (!AddResource(gcId, __glXContextRes, (pointer)glxc)) {
+ (*glxc->destroy)(glxc);
+ client->errorValue = gcId;
+ return BadAlloc;
+ }
+
+ /*
+ ** Finally, now that everything is working, setup the rest of the
+ ** context.
+ */
+ glxc->id = gcId;
+ glxc->share_id = shareList;
+ glxc->idExists = GL_TRUE;
+ glxc->isCurrent = GL_FALSE;
+ glxc->isDirect = isDirect;
+ glxc->renderMode = GL_RENDER;
+
+ __glXAddToContextList(glxc);
+
+ return Success;
+}
+
+int __glXDisp_CreateContext(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXCreateContextReq *req = (xGLXCreateContextReq *) pc;
+ __GLXconfig *config;
+ __GLXscreen *pGlxScreen;
+ int err;
+
+ REQUEST_SIZE_MATCH(xGLXCreateContextReq);
+
+ if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
+ return err;
+ if (!validGlxVisual(cl->client, pGlxScreen, req->visual, &config, &err))
+ return err;
+
+ return DoCreateContext(cl, req->context, req->shareList,
+ config, pGlxScreen, req->isDirect);
+}
+
+int __glXDisp_CreateNewContext(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXCreateNewContextReq *req = (xGLXCreateNewContextReq *) pc;
+ __GLXconfig *config;
+ __GLXscreen *pGlxScreen;
+ int err;
+
+ REQUEST_SIZE_MATCH(xGLXCreateNewContextReq);
+
+ if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
+ return err;
+ if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err))
+ return err;
+
+ return DoCreateContext(cl, req->context, req->shareList,
+ config, pGlxScreen, req->isDirect);
+}
+
+int __glXDisp_CreateContextWithConfigSGIX(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXCreateContextWithConfigSGIXReq *req =
+ (xGLXCreateContextWithConfigSGIXReq *) pc;
+ __GLXconfig *config;
+ __GLXscreen *pGlxScreen;
+ int err;
+
+ REQUEST_SIZE_MATCH(xGLXCreateContextWithConfigSGIXReq);
+
+ if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
+ return err;
+ if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err))
+ return err;
+
+ return DoCreateContext(cl, req->context, req->shareList,
+ config, pGlxScreen, req->isDirect);
+}
+int __glXDisp_DestroyContext(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXDestroyContextReq *req = (xGLXDestroyContextReq *) pc;
+ __GLXcontext *glxc;
+ int err;
+
+ REQUEST_SIZE_MATCH(xGLXDestroyContextReq);
+
+ if (!validGlxContext(cl->client, req->context, DixDestroyAccess,
+ &glxc, &err))
+ return err;
+
+ FreeResourceByType(req->context, __glXContextRes, FALSE);
+ return Success;
+}
+
+/*****************************************************************************/
+
+/*
+** For each client, the server keeps a table of all the contexts that are
+** current for that client (each thread of a client may have its own current
+** context). These routines add, change, and lookup contexts in the table.
+*/
+
+/*
+** Add a current context, and return the tag that will be used to refer to it.
+*/
+static int AddCurrentContext(__GLXclientState *cl, __GLXcontext *glxc)
+{
+ int i;
+ int num = cl->numCurrentContexts;
+ __GLXcontext **table = cl->currentContexts;
+
+ if (!glxc) return -1;
+
+ /*
+ ** Try to find an empty slot and use it.
+ */
+ for (i=0; i < num; i++) {
+ if (!table[i]) {
+ table[i] = glxc;
+ return i+1;
+ }
+ }
+ /*
+ ** Didn't find a free slot, so we'll have to grow the table.
+ */
+ if (!num) {
+ table = (__GLXcontext **) malloc(sizeof(__GLXcontext *));
+ } else {
+ table = (__GLXcontext **) realloc(table,
+ (num+1)*sizeof(__GLXcontext *));
+ }
+ table[num] = glxc;
+ cl->currentContexts = table;
+ cl->numCurrentContexts++;
+ return num+1;
+}
+
+/*
+** Given a tag, change the current context for the corresponding entry.
+*/
+static void ChangeCurrentContext(__GLXclientState *cl, __GLXcontext *glxc,
+ GLXContextTag tag)
+{
+ __GLXcontext **table = cl->currentContexts;
+ table[tag-1] = glxc;
+}
+
+/*
+** For this implementation we have chosen to simply use the index of the
+** context's entry in the table as the context tag. A tag must be greater
+** than 0.
+*/
+__GLXcontext *__glXLookupContextByTag(__GLXclientState *cl, GLXContextTag tag)
+{
+ int num = cl->numCurrentContexts;
+
+ if (tag < 1 || tag > num) {
+ return 0;
+ } else {
+ return cl->currentContexts[tag-1];
+ }
+}
+
+/*****************************************************************************/
+
+static void StopUsingContext(__GLXcontext *glxc)
+{
+ if (glxc) {
+ if (glxc == __glXLastContext) {
+ /* Tell server GL library */
+ __glXLastContext = 0;
+ }
+ glxc->isCurrent = GL_FALSE;
+ if (!glxc->idExists) {
+ __glXFreeContext(glxc);
+ }
+ }
+}
+
+static void StartUsingContext(__GLXclientState *cl, __GLXcontext *glxc)
+{
+ glxc->isCurrent = GL_TRUE;
+ __glXLastContext = glxc;
+}
+
+/**
+ * This is a helper function to handle the legacy (pre GLX 1.3) cases
+ * where passing an X window to glXMakeCurrent is valid. Given a
+ * resource ID, look up the GLX drawable if available, otherwise, make
+ * sure it's an X window and create a GLX drawable one the fly.
+ */
+static __GLXdrawable *
+__glXGetDrawable(__GLXcontext *glxc, GLXDrawable drawId, ClientPtr client,
+ int *error)
+{
+ DrawablePtr pDraw;
+ __GLXdrawable *pGlxDraw;
+ int rc;
+
+ if (validGlxDrawable(client, drawId, GLX_DRAWABLE_ANY,
+ DixWriteAccess, &pGlxDraw, &rc)) {
+ if (glxc != NULL && pGlxDraw->config != glxc->config) {
+ client->errorValue = drawId;
+ *error = BadMatch;
+ return NULL;
+ }
+
+ return pGlxDraw;
+ }
+
+ /* No active context and an unknown drawable, bail. */
+ if (glxc == NULL) {
+ client->errorValue = drawId;
+ *error = BadMatch;
+ return NULL;
+ }
+
+ /* The drawId wasn't a GLX drawable. Make sure it's a window and
+ * create a GLXWindow for it. Check that the drawable screen
+ * matches the context screen and that the context fbconfig is
+ * compatible with the window visual. */
+
+ rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixGetAttrAccess);
+ if (rc != Success || pDraw->type != DRAWABLE_WINDOW) {
+ client->errorValue = drawId;
+ *error = __glXError(GLXBadDrawable);
+ return NULL;
+ }
+
+ if (pDraw->pScreen != glxc->pGlxScreen->pScreen) {
+ client->errorValue = pDraw->pScreen->myNum;
+ *error = BadMatch;
+ return NULL;
+ }
+
+ if (!validGlxFBConfigForWindow(client, glxc->config, pDraw, error))
+ return NULL;
+
+ pGlxDraw = glxc->pGlxScreen->createDrawable(client, glxc->pGlxScreen,
+ pDraw, drawId,
+ GLX_DRAWABLE_WINDOW,
+ drawId, glxc->config);
+
+ /* since we are creating the drawablePrivate, drawId should be new */
+ if (!AddResource(drawId, __glXDrawableRes, pGlxDraw)) {
+ pGlxDraw->destroy (pGlxDraw);
+ *error = BadAlloc;
+ return NULL;
+ }
+
+ return pGlxDraw;
+}
+
+/*****************************************************************************/
+/*
+** Make an OpenGL context and drawable current.
+*/
+
+static int
+DoMakeCurrent(__GLXclientState *cl,
+ GLXDrawable drawId, GLXDrawable readId,
+ GLXContextID contextId, GLXContextTag tag)
+{
+ ClientPtr client = cl->client;
+ xGLXMakeCurrentReply reply;
+ __GLXcontext *glxc, *prevglxc;
+ __GLXdrawable *drawPriv = NULL;
+ __GLXdrawable *readPriv = NULL;
+ int error;
+ GLuint mask;
+
+ /*
+ ** If one is None and the other isn't, it's a bad match.
+ */
+
+ mask = (drawId == None) ? (1 << 0) : 0;
+ mask |= (readId == None) ? (1 << 1) : 0;
+ mask |= (contextId == None) ? (1 << 2) : 0;
+
+ if ( (mask != 0x00) && (mask != 0x07) ) {
+ return BadMatch;
+ }
+
+ /*
+ ** Lookup old context. If we have one, it must be in a usable state.
+ */
+ if (tag != 0) {
+ prevglxc = __glXLookupContextByTag(cl, tag);
+ if (!prevglxc) {
+ /*
+ ** Tag for previous context is invalid.
+ */
+ return __glXError(GLXBadContextTag);
+ }
+ if (prevglxc->renderMode != GL_RENDER) {
+ /* Oops. Not in render mode render. */
+ client->errorValue = prevglxc->id;
+ return __glXError(GLXBadContextState);
+ }
+ } else {
+ prevglxc = 0;
+ }
+
+ /*
+ ** Lookup new context. It must not be current for someone else.
+ */
+ if (contextId != None) {
+ int status;
+
+ if (!validGlxContext(client, contextId, DixUseAccess, &glxc, &error))
+ return error;
+ if ((glxc != prevglxc) && glxc->isCurrent) {
+ /* Context is current to somebody else */
+ return BadAccess;
+ }
+
+ assert( drawId != None );
+ assert( readId != None );
+
+ drawPriv = __glXGetDrawable(glxc, drawId, client, &status);
+ if (drawPriv == NULL)
+ return status;
+
+ readPriv = __glXGetDrawable(glxc, readId, client, &status);
+ if (readPriv == NULL)
+ return status;
+
+ } else {
+ /* Switching to no context. Ignore new drawable. */
+ glxc = 0;
+ drawPriv = 0;
+ readPriv = 0;
+ }
+
+
+ if (prevglxc) {
+ /*
+ ** Flush the previous context if needed.
+ */
+ if (__GLX_HAS_UNFLUSHED_CMDS(prevglxc)) {
+ if (__glXForceCurrent(cl, tag, (int *)&error)) {
+ CALL_Flush( GET_DISPATCH(), () );
+ __GLX_NOTE_FLUSHED_CMDS(prevglxc);
+ } else {
+ return error;
+ }
+ }
+
+ /*
+ ** Make the previous context not current.
+ */
+ if (!(*prevglxc->loseCurrent)(prevglxc)) {
+ return __glXError(GLXBadContext);
+ }
+ __glXFlushContextCache();
+ if (!prevglxc->isDirect) {
+ prevglxc->drawPriv = NULL;
+ prevglxc->readPriv = NULL;
+ }
+ }
+
+
+ if ((glxc != 0) && !glxc->isDirect) {
+
+ glxc->drawPriv = drawPriv;
+ glxc->readPriv = readPriv;
+
+ /* make the context current */
+ if (!(*glxc->makeCurrent)(glxc)) {
+ glxc->drawPriv = NULL;
+ glxc->readPriv = NULL;
+ return __glXError(GLXBadContext);
+ }
+
+ glxc->isCurrent = GL_TRUE;
+ }
+
+ if (prevglxc) {
+ ChangeCurrentContext(cl, glxc, tag);
+ StopUsingContext(prevglxc);
+ } else {
+ tag = AddCurrentContext(cl, glxc);
+ }
+
+ if (glxc) {
+ StartUsingContext(cl, glxc);
+ reply.contextTag = tag;
+ } else {
+ reply.contextTag = 0;
+ }
+
+ reply.length = 0;
+ reply.type = X_Reply;
+ reply.sequenceNumber = client->sequence;
+
+ if (client->swapped) {
+ __glXSwapMakeCurrentReply(client, &reply);
+ } else {
+ WriteToClient(client, sz_xGLXMakeCurrentReply, (char *)&reply);
+ }
+ return Success;
+}
+
+int __glXDisp_MakeCurrent(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXMakeCurrentReq *req = (xGLXMakeCurrentReq *) pc;
+
+ REQUEST_SIZE_MATCH(xGLXMakeCurrentReq);
+
+ return DoMakeCurrent( cl, req->drawable, req->drawable,
+ req->context, req->oldContextTag );
+}
+
+int __glXDisp_MakeContextCurrent(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXMakeContextCurrentReq *req = (xGLXMakeContextCurrentReq *) pc;
+
+ REQUEST_SIZE_MATCH(xGLXMakeContextCurrentReq);
+
+ return DoMakeCurrent( cl, req->drawable, req->readdrawable,
+ req->context, req->oldContextTag );
+}
+
+int __glXDisp_MakeCurrentReadSGI(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXMakeCurrentReadSGIReq *req = (xGLXMakeCurrentReadSGIReq *) pc;
+
+ REQUEST_SIZE_MATCH(xGLXMakeCurrentReadSGIReq);
+
+ return DoMakeCurrent( cl, req->drawable, req->readable,
+ req->context, req->oldContextTag );
+}
+
+int __glXDisp_IsDirect(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXIsDirectReq *req = (xGLXIsDirectReq *) pc;
+ xGLXIsDirectReply reply;
+ __GLXcontext *glxc;
+ int err;
+
+ REQUEST_SIZE_MATCH(xGLXIsDirectReq);
+
+ if (!validGlxContext(cl->client, req->context, DixReadAccess, &glxc, &err))
+ return err;
+
+ reply.isDirect = glxc->isDirect;
+ reply.length = 0;
+ reply.type = X_Reply;
+ reply.sequenceNumber = client->sequence;
+
+ if (client->swapped) {
+ __glXSwapIsDirectReply(client, &reply);
+ } else {
+ WriteToClient(client, sz_xGLXIsDirectReply, (char *)&reply);
+ }
+
+ return Success;
+}
+
+int __glXDisp_QueryVersion(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXQueryVersionReq *req = (xGLXQueryVersionReq *) pc;
+ xGLXQueryVersionReply reply;
+ GLuint major, minor;
+
+ REQUEST_SIZE_MATCH(xGLXQueryVersionReq);
+
+ major = req->majorVersion;
+ minor = req->minorVersion;
+ (void)major;
+ (void)minor;
+
+ /*
+ ** Server should take into consideration the version numbers sent by the
+ ** client if it wants to work with older clients; however, in this
+ ** implementation the server just returns its version number.
+ */
+ reply.majorVersion = glxMajorVersion;
+ reply.minorVersion = glxMinorVersion;
+ reply.length = 0;
+ reply.type = X_Reply;
+ reply.sequenceNumber = client->sequence;
+
+ if (client->swapped) {
+ __glXSwapQueryVersionReply(client, &reply);
+ } else {
+ WriteToClient(client, sz_xGLXQueryVersionReply, (char *)&reply);
+ }
+ return Success;
+}
+
+int __glXDisp_WaitGL(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXWaitGLReq *req = (xGLXWaitGLReq *)pc;
+ GLXContextTag tag;
+ __GLXcontext *glxc = NULL;
+ int error;
+
+ REQUEST_SIZE_MATCH(xGLXWaitGLReq);
+
+ tag = req->contextTag;
+ if (tag) {
+ glxc = __glXLookupContextByTag(cl, tag);
+ if (!glxc)
+ return __glXError(GLXBadContextTag);
+
+ if (!__glXForceCurrent(cl, req->contextTag, &error))
+ return error;
+
+ CALL_Finish( GET_DISPATCH(), () );
+ }
+
+ if (glxc && glxc->drawPriv->waitGL)
+ (*glxc->drawPriv->waitGL)(glxc->drawPriv);
+
+ return Success;
+}
+
+int __glXDisp_WaitX(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXWaitXReq *req = (xGLXWaitXReq *)pc;
+ GLXContextTag tag;
+ __GLXcontext *glxc = NULL;
+ int error;
+
+ REQUEST_SIZE_MATCH(xGLXWaitXReq);
+
+ tag = req->contextTag;
+ if (tag) {
+ glxc = __glXLookupContextByTag(cl, tag);
+ if (!glxc)
+ return __glXError(GLXBadContextTag);
+
+ if (!__glXForceCurrent(cl, req->contextTag, &error))
+ return error;
+ }
+
+ if (glxc && glxc->drawPriv->waitX)
+ (*glxc->drawPriv->waitX)(glxc->drawPriv);
+
+ return Success;
+}
+
+int __glXDisp_CopyContext(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXCopyContextReq *req = (xGLXCopyContextReq *) pc;
+ GLXContextID source;
+ GLXContextID dest;
+ GLXContextTag tag;
+ unsigned long mask;
+ __GLXcontext *src, *dst;
+ int error;
+
+ REQUEST_SIZE_MATCH(xGLXCopyContextReq);
+
+ source = req->source;
+ dest = req->dest;
+ tag = req->contextTag;
+ mask = req->mask;
+ if (!validGlxContext(cl->client, source, DixReadAccess, &src, &error))
+ return error;
+ if (!validGlxContext(cl->client, dest, DixWriteAccess, &dst, &error))
+ return error;
+
+ /*
+ ** They must be in the same address space, and same screen.
+ ** NOTE: no support for direct rendering contexts here.
+ */
+ if (src->isDirect || dst->isDirect ||
+ (src->pGlxScreen != dst->pGlxScreen)) {
+ client->errorValue = source;
+ return BadMatch;
+ }
+
+ /*
+ ** The destination context must not be current for any client.
+ */
+ if (dst->isCurrent) {
+ client->errorValue = dest;
+ return BadAccess;
+ }
+
+ if (tag) {
+ __GLXcontext *tagcx = __glXLookupContextByTag(cl, tag);
+
+ if (!tagcx) {
+ return __glXError(GLXBadContextTag);
+ }
+ if (tagcx != src) {
+ /*
+ ** This would be caused by a faulty implementation of the client
+ ** library.
+ */
+ return BadMatch;
+ }
+ /*
+ ** In this case, glXCopyContext is in both GL and X streams, in terms
+ ** of sequentiality.
+ */
+ if (__glXForceCurrent(cl, tag, &error)) {
+ /*
+ ** Do whatever is needed to make sure that all preceding requests
+ ** in both streams are completed before the copy is executed.
+ */
+ CALL_Finish( GET_DISPATCH(), () );
+ __GLX_NOTE_FLUSHED_CMDS(tagcx);
+ } else {
+ return error;
+ }
+ }
+ /*
+ ** Issue copy. The only reason for failure is a bad mask.
+ */
+ if (!(*dst->copy)(dst, src, mask)) {
+ client->errorValue = mask;
+ return BadValue;
+ }
+ return Success;
+}
+
+enum {
+ GLX_VIS_CONFIG_UNPAIRED = 18,
+ GLX_VIS_CONFIG_PAIRED = 20
+};
+
+enum {
+ GLX_VIS_CONFIG_TOTAL = GLX_VIS_CONFIG_UNPAIRED + GLX_VIS_CONFIG_PAIRED
+};
+
+int __glXDisp_GetVisualConfigs(__GLXclientState *cl, GLbyte *pc)
+{
+ xGLXGetVisualConfigsReq *req = (xGLXGetVisualConfigsReq *) pc;
+ ClientPtr client = cl->client;
+ xGLXGetVisualConfigsReply reply;
+ __GLXscreen *pGlxScreen;
+ __GLXconfig *modes;
+ CARD32 buf[GLX_VIS_CONFIG_TOTAL];
+ int p, i, err;
+ __GLX_DECLARE_SWAP_VARIABLES;
+ __GLX_DECLARE_SWAP_ARRAY_VARIABLES;
+
+ REQUEST_SIZE_MATCH(xGLXGetVisualConfigsReq);
+
+ if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
+ return err;
+
+ reply.numVisuals = pGlxScreen->numVisuals;
+ reply.numProps = GLX_VIS_CONFIG_TOTAL;
+ reply.length = (reply.numVisuals * __GLX_SIZE_CARD32 * GLX_VIS_CONFIG_TOTAL) >> 2;
+ reply.type = X_Reply;
+ reply.sequenceNumber = client->sequence;
+
+ if (client->swapped) {
+ __GLX_SWAP_SHORT(&reply.sequenceNumber);
+ __GLX_SWAP_INT(&reply.length);
+ __GLX_SWAP_INT(&reply.numVisuals);
+ __GLX_SWAP_INT(&reply.numProps);
+ }
+
+ WriteToClient(client, sz_xGLXGetVisualConfigsReply, (char *)&reply);
+
+ for (i = 0; i < pGlxScreen->numVisuals; i++) {
+ modes = pGlxScreen->visuals[i];
+
+ p = 0;
+ buf[p++] = modes->visualID;
+ buf[p++] = glxConvertToXVisualType( modes->visualType );
+ buf[p++] = (modes->renderType & GLX_RGBA_BIT) ? GL_TRUE : GL_FALSE;
+
+ buf[p++] = modes->redBits;
+ buf[p++] = modes->greenBits;
+ buf[p++] = modes->blueBits;
+ buf[p++] = modes->alphaBits;
+ buf[p++] = modes->accumRedBits;
+ buf[p++] = modes->accumGreenBits;
+ buf[p++] = modes->accumBlueBits;
+ buf[p++] = modes->accumAlphaBits;
+
+ buf[p++] = modes->doubleBufferMode;
+ buf[p++] = modes->stereoMode;
+
+ buf[p++] = modes->rgbBits;
+ buf[p++] = modes->depthBits;
+ buf[p++] = modes->stencilBits;
+ buf[p++] = modes->numAuxBuffers;
+ buf[p++] = modes->level;
+
+ assert(p == GLX_VIS_CONFIG_UNPAIRED);
+ /*
+ ** Add token/value pairs for extensions.
+ */
+ buf[p++] = GLX_VISUAL_CAVEAT_EXT;
+ buf[p++] = modes->visualRating;
+ buf[p++] = GLX_TRANSPARENT_TYPE;
+ buf[p++] = modes->transparentPixel;
+ buf[p++] = GLX_TRANSPARENT_RED_VALUE;
+ buf[p++] = modes->transparentRed;
+ buf[p++] = GLX_TRANSPARENT_GREEN_VALUE;
+ buf[p++] = modes->transparentGreen;
+ buf[p++] = GLX_TRANSPARENT_BLUE_VALUE;
+ buf[p++] = modes->transparentBlue;
+ buf[p++] = GLX_TRANSPARENT_ALPHA_VALUE;
+ buf[p++] = modes->transparentAlpha;
+ buf[p++] = GLX_TRANSPARENT_INDEX_VALUE;
+ buf[p++] = modes->transparentIndex;
+ buf[p++] = GLX_SAMPLES_SGIS;
+ buf[p++] = modes->samples;
+ buf[p++] = GLX_SAMPLE_BUFFERS_SGIS;
+ buf[p++] = modes->sampleBuffers;
+ buf[p++] = 0; /* copy over visualSelectGroup (GLX_VISUAL_SELECT_GROUP_SGIX)? */
+ buf[p++] = 0;
+
+ assert(p == GLX_VIS_CONFIG_TOTAL);
+ if (client->swapped) {
+ __GLX_SWAP_INT_ARRAY(buf, p);
+ }
+ WriteToClient(client, __GLX_SIZE_CARD32 * p, (char *)buf);
+ }
+ return Success;
+}
+
+#define __GLX_TOTAL_FBCONFIG_ATTRIBS (36)
+#define __GLX_FBCONFIG_ATTRIBS_LENGTH (__GLX_TOTAL_FBCONFIG_ATTRIBS * 2)
+/**
+ * Send the set of GLXFBConfigs to the client. There is not currently
+ * and interface into the driver on the server-side to get GLXFBConfigs,
+ * so we "invent" some based on the \c __GLXvisualConfig structures that
+ * the driver does supply.
+ *
+ * The reply format for both \c glXGetFBConfigs and \c glXGetFBConfigsSGIX
+ * is the same, so this routine pulls double duty.
+ */
+
+static int
+DoGetFBConfigs(__GLXclientState *cl, unsigned screen)
+{
+ ClientPtr client = cl->client;
+ xGLXGetFBConfigsReply reply;
+ __GLXscreen *pGlxScreen;
+ CARD32 buf[__GLX_FBCONFIG_ATTRIBS_LENGTH];
+ int p, err;
+ __GLXconfig *modes;
+ __GLX_DECLARE_SWAP_VARIABLES;
+ __GLX_DECLARE_SWAP_ARRAY_VARIABLES;
+
+ if (!validGlxScreen(cl->client, screen, &pGlxScreen, &err))
+ return err;
+
+ reply.numFBConfigs = pGlxScreen->numFBConfigs;
+ reply.numAttribs = __GLX_TOTAL_FBCONFIG_ATTRIBS;
+ reply.length = (__GLX_FBCONFIG_ATTRIBS_LENGTH * reply.numFBConfigs);
+ reply.type = X_Reply;
+ reply.sequenceNumber = client->sequence;
+
+ if (client->swapped) {
+ __GLX_SWAP_SHORT(&reply.sequenceNumber);
+ __GLX_SWAP_INT(&reply.length);
+ __GLX_SWAP_INT(&reply.numFBConfigs);
+ __GLX_SWAP_INT(&reply.numAttribs);
+ }
+
+ WriteToClient(client, sz_xGLXGetFBConfigsReply, (char *)&reply);
+
+ for (modes = pGlxScreen->fbconfigs; modes != NULL; modes = modes->next) {
+ p = 0;
+
+#define WRITE_PAIR(tag,value) \
+ do { buf[p++] = tag ; buf[p++] = value ; } while( 0 )
+
+ WRITE_PAIR( GLX_VISUAL_ID, modes->visualID );
+ WRITE_PAIR( GLX_FBCONFIG_ID, modes->fbconfigID );
+ WRITE_PAIR( GLX_X_RENDERABLE, GL_TRUE );
+
+ WRITE_PAIR( GLX_RGBA,
+ (modes->renderType & GLX_RGBA_BIT) ? GL_TRUE : GL_FALSE );
+ WRITE_PAIR( GLX_RENDER_TYPE, modes->renderType );
+ WRITE_PAIR( GLX_DOUBLEBUFFER, modes->doubleBufferMode );
+ WRITE_PAIR( GLX_STEREO, modes->stereoMode );
+
+ WRITE_PAIR( GLX_BUFFER_SIZE, modes->rgbBits );
+ WRITE_PAIR( GLX_LEVEL, modes->level );
+ WRITE_PAIR( GLX_AUX_BUFFERS, modes->numAuxBuffers );
+ WRITE_PAIR( GLX_RED_SIZE, modes->redBits );
+ WRITE_PAIR( GLX_GREEN_SIZE, modes->greenBits );
+ WRITE_PAIR( GLX_BLUE_SIZE, modes->blueBits );
+ WRITE_PAIR( GLX_ALPHA_SIZE, modes->alphaBits );
+ WRITE_PAIR( GLX_ACCUM_RED_SIZE, modes->accumRedBits );
+ WRITE_PAIR( GLX_ACCUM_GREEN_SIZE, modes->accumGreenBits );
+ WRITE_PAIR( GLX_ACCUM_BLUE_SIZE, modes->accumBlueBits );
+ WRITE_PAIR( GLX_ACCUM_ALPHA_SIZE, modes->accumAlphaBits );
+ WRITE_PAIR( GLX_DEPTH_SIZE, modes->depthBits );
+ WRITE_PAIR( GLX_STENCIL_SIZE, modes->stencilBits );
+ WRITE_PAIR( GLX_X_VISUAL_TYPE, modes->visualType );
+ WRITE_PAIR( GLX_CONFIG_CAVEAT, modes->visualRating );
+ WRITE_PAIR( GLX_TRANSPARENT_TYPE, modes->transparentPixel );
+ WRITE_PAIR( GLX_TRANSPARENT_RED_VALUE, modes->transparentRed );
+ WRITE_PAIR( GLX_TRANSPARENT_GREEN_VALUE, modes->transparentGreen );
+ WRITE_PAIR( GLX_TRANSPARENT_BLUE_VALUE, modes->transparentBlue );
+ WRITE_PAIR( GLX_TRANSPARENT_ALPHA_VALUE, modes->transparentAlpha );
+ WRITE_PAIR( GLX_TRANSPARENT_INDEX_VALUE, modes->transparentIndex );
+ WRITE_PAIR( GLX_SWAP_METHOD_OML, modes->swapMethod );
+ WRITE_PAIR( GLX_SAMPLES_SGIS, modes->samples );
+ WRITE_PAIR( GLX_SAMPLE_BUFFERS_SGIS, modes->sampleBuffers );
+ /* GLX_VISUAL_SELECT_GROUP_SGIX ? */
+ WRITE_PAIR( GLX_DRAWABLE_TYPE, modes->drawableType );
+ WRITE_PAIR( GLX_BIND_TO_TEXTURE_RGB_EXT, modes->bindToTextureRgb );
+ WRITE_PAIR( GLX_BIND_TO_TEXTURE_RGBA_EXT, modes->bindToTextureRgba );
+ WRITE_PAIR( GLX_BIND_TO_MIPMAP_TEXTURE_EXT, modes->bindToMipmapTexture );
+ WRITE_PAIR( GLX_BIND_TO_TEXTURE_TARGETS_EXT, modes->bindToTextureTargets );
+
+ if (client->swapped) {
+ __GLX_SWAP_INT_ARRAY(buf, __GLX_FBCONFIG_ATTRIBS_LENGTH);
+ }
+ WriteToClient(client, __GLX_SIZE_CARD32 * __GLX_FBCONFIG_ATTRIBS_LENGTH,
+ (char *)buf);
+ }
+ return Success;
+}
+
+
+int __glXDisp_GetFBConfigs(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXGetFBConfigsReq *req = (xGLXGetFBConfigsReq *) pc;
+ REQUEST_SIZE_MATCH(xGLXGetFBConfigsReq);
+ return DoGetFBConfigs(cl, req->screen);
+}
+
+int __glXDisp_GetFBConfigsSGIX(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXGetFBConfigsSGIXReq *req = (xGLXGetFBConfigsSGIXReq *) pc;
+ /* work around mesa bug, don't use REQUEST_SIZE_MATCH */
+ REQUEST_AT_LEAST_SIZE(xGLXGetFBConfigsSGIXReq);
+ return DoGetFBConfigs(cl, req->screen);
+}
+
+GLboolean
+__glXDrawableInit(__GLXdrawable *drawable,
+ __GLXscreen *screen, DrawablePtr pDraw, int type,
+ XID drawId, __GLXconfig *config)
+{
+ drawable->pDraw = pDraw;
+ drawable->type = type;
+ drawable->drawId = drawId;
+ drawable->config = config;
+ drawable->eventMask = 0;
+
+ return GL_TRUE;
+}
+
+void
+__glXDrawableRelease(__GLXdrawable *drawable)
+{
+}
+
+static int
+DoCreateGLXDrawable(ClientPtr client, __GLXscreen *pGlxScreen,
+ __GLXconfig *config, DrawablePtr pDraw, XID drawableId,
+ XID glxDrawableId, int type)
+{
+ __GLXdrawable *pGlxDraw;
+
+ if (pGlxScreen->pScreen != pDraw->pScreen)
+ return BadMatch;
+
+ pGlxDraw = pGlxScreen->createDrawable(client, pGlxScreen, pDraw,
+ drawableId, type,
+ glxDrawableId, config);
+ if (pGlxDraw == NULL)
+ return BadAlloc;
+
+ if (!AddResource(glxDrawableId, __glXDrawableRes, pGlxDraw)) {
+ pGlxDraw->destroy (pGlxDraw);
+ return BadAlloc;
+ }
+
+ /* Add the glx drawable under the XID of the underlying X drawable
+ * too. That way we'll get a callback in DrawableGone and can
+ * clean up properly when the drawable is destroyed. */
+ if (drawableId != glxDrawableId &&
+ !AddResource(pDraw->id, __glXDrawableRes, pGlxDraw)) {
+ pGlxDraw->destroy (pGlxDraw);
+ return BadAlloc;
+ }
+
+ return Success;
+}
+
+static int
+DoCreateGLXPixmap(ClientPtr client, __GLXscreen *pGlxScreen, __GLXconfig *config,
+ XID drawableId, XID glxDrawableId)
+{
+ DrawablePtr pDraw;
+ int err;
+
+ LEGAL_NEW_RESOURCE(glxDrawableId, client);
+
+ err = dixLookupDrawable(&pDraw, drawableId, client, 0, DixAddAccess);
+ if (err != Success) {
+ client->errorValue = drawableId;
+ return err;
+ }
+ if (pDraw->type != DRAWABLE_PIXMAP) {
+ client->errorValue = drawableId;
+ return BadPixmap;
+ }
+
+ err = DoCreateGLXDrawable(client, pGlxScreen, config, pDraw, drawableId,
+ glxDrawableId, GLX_DRAWABLE_PIXMAP);
+
+ return err;
+}
+
+static void
+determineTextureTarget(ClientPtr client, XID glxDrawableID,
+ CARD32 *attribs, CARD32 numAttribs)
+{
+ GLenum target = 0;
+ GLenum format = 0;
+ int i, err;
+ __GLXdrawable *pGlxDraw;
+
+ if (!validGlxDrawable(client, glxDrawableID, GLX_DRAWABLE_PIXMAP,
+ DixWriteAccess, &pGlxDraw, &err))
+ /* We just added it in CreatePixmap, so we should never get here. */
+ return;
+
+ for (i = 0; i < numAttribs; i++) {
+ if (attribs[2 * i] == GLX_TEXTURE_TARGET_EXT) {
+ switch (attribs[2 * i + 1]) {
+ case GLX_TEXTURE_2D_EXT:
+ target = GL_TEXTURE_2D;
+ break;
+ case GLX_TEXTURE_RECTANGLE_EXT:
+ target = GL_TEXTURE_RECTANGLE_ARB;
+ break;
+ }
+ }
+
+ if (attribs[2 * i] == GLX_TEXTURE_FORMAT_EXT)
+ format = attribs[2 * i + 1];
+ }
+
+ if (!target) {
+ int w = pGlxDraw->pDraw->width, h = pGlxDraw->pDraw->height;
+
+ if (h & (h - 1) || w & (w - 1))
+ target = GL_TEXTURE_RECTANGLE_ARB;
+ else
+ target = GL_TEXTURE_2D;
+ }
+
+ pGlxDraw->target = target;
+ pGlxDraw->format = format;
+}
+
+int __glXDisp_CreateGLXPixmap(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXCreateGLXPixmapReq *req = (xGLXCreateGLXPixmapReq *) pc;
+ __GLXconfig *config;
+ __GLXscreen *pGlxScreen;
+ int err;
+
+ REQUEST_SIZE_MATCH(xGLXCreateGLXPixmapReq);
+
+ if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
+ return err;
+ if (!validGlxVisual(cl->client, pGlxScreen, req->visual, &config, &err))
+ return err;
+
+ return DoCreateGLXPixmap(cl->client, pGlxScreen, config,
+ req->pixmap, req->glxpixmap);
+}
+
+int __glXDisp_CreatePixmap(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXCreatePixmapReq *req = (xGLXCreatePixmapReq *) pc;
+ __GLXconfig *config;
+ __GLXscreen *pGlxScreen;
+ int err;
+
+ REQUEST_AT_LEAST_SIZE(xGLXCreatePixmapReq);
+ if (req->numAttribs > (UINT32_MAX >> 3)) {
+ client->errorValue = req->numAttribs;
+ return BadValue;
+ }
+ REQUEST_FIXED_SIZE(xGLXCreatePixmapReq, req->numAttribs << 3);
+
+ if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
+ return err;
+ if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err))
+ return err;
+
+ err = DoCreateGLXPixmap(cl->client, pGlxScreen, config,
+ req->pixmap, req->glxpixmap);
+ if (err != Success)
+ return err;
+
+ determineTextureTarget(cl->client, req->glxpixmap,
+ (CARD32*) (req + 1), req->numAttribs);
+
+ return Success;
+}
+
+int __glXDisp_CreateGLXPixmapWithConfigSGIX(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXCreateGLXPixmapWithConfigSGIXReq *req =
+ (xGLXCreateGLXPixmapWithConfigSGIXReq *) pc;
+ __GLXconfig *config;
+ __GLXscreen *pGlxScreen;
+ int err;
+
+ REQUEST_SIZE_MATCH(xGLXCreateGLXPixmapWithConfigSGIXReq);
+
+ if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
+ return err;
+ if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err))
+ return err;
+
+ return DoCreateGLXPixmap(cl->client, pGlxScreen,
+ config, req->pixmap, req->glxpixmap);
+}
+
+
+static int DoDestroyDrawable(__GLXclientState *cl, XID glxdrawable, int type)
+{
+ __GLXdrawable *pGlxDraw;
+ int err;
+
+ if (!validGlxDrawable(cl->client, glxdrawable, type,
+ DixDestroyAccess, &pGlxDraw, &err))
+ return err;
+
+ FreeResource(glxdrawable, FALSE);
+
+ return Success;
+}
+
+int __glXDisp_DestroyGLXPixmap(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXDestroyGLXPixmapReq *req = (xGLXDestroyGLXPixmapReq *) pc;
+
+ REQUEST_SIZE_MATCH(xGLXDestroyGLXPixmapReq);
+
+ return DoDestroyDrawable(cl, req->glxpixmap, GLX_DRAWABLE_PIXMAP);
+}
+
+int __glXDisp_DestroyPixmap(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXDestroyPixmapReq *req = (xGLXDestroyPixmapReq *) pc;
+
+ /* should be REQUEST_SIZE_MATCH, but mesa's glXDestroyPixmap used to set
+ * length to 3 instead of 2 */
+ REQUEST_AT_LEAST_SIZE(xGLXDestroyPixmapReq);
+
+ return DoDestroyDrawable(cl, req->glxpixmap, GLX_DRAWABLE_PIXMAP);
+}
+
+static int
+DoCreatePbuffer(ClientPtr client, int screenNum, XID fbconfigId,
+ int width, int height, XID glxDrawableId)
+{
+ __GLXconfig *config;
+ __GLXscreen *pGlxScreen;
+ PixmapPtr pPixmap;
+ int err;
+
+ LEGAL_NEW_RESOURCE(glxDrawableId, client);
+
+ if (!validGlxScreen(client, screenNum, &pGlxScreen, &err))
+ return err;
+ if (!validGlxFBConfig(client, pGlxScreen, fbconfigId, &config, &err))
+ return err;
+
+ __glXenterServer(GL_FALSE);
+ pPixmap = (*pGlxScreen->pScreen->CreatePixmap) (pGlxScreen->pScreen,
+ width, height, config->rgbBits, 0);
+ __glXleaveServer(GL_FALSE);
+
+ /* Assign the pixmap the same id as the pbuffer and add it as a
+ * resource so it and the DRI2 drawable will be reclaimed when the
+ * pbuffer is destroyed. */
+ pPixmap->drawable.id = glxDrawableId;
+ if (!AddResource(pPixmap->drawable.id, RT_PIXMAP, pPixmap))
+ return BadAlloc;
+
+ return DoCreateGLXDrawable(client, pGlxScreen, config, &pPixmap->drawable,
+ glxDrawableId, glxDrawableId,
+ GLX_DRAWABLE_PBUFFER);
+}
+
+int __glXDisp_CreatePbuffer(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXCreatePbufferReq *req = (xGLXCreatePbufferReq *) pc;
+ CARD32 *attrs;
+ int width, height, i;
+
+ REQUEST_AT_LEAST_SIZE(xGLXCreatePbufferReq);
+ if (req->numAttribs > (UINT32_MAX >> 3)) {
+ client->errorValue = req->numAttribs;
+ return BadValue;
+ }
+ REQUEST_FIXED_SIZE(xGLXCreatePbufferReq, req->numAttribs << 3);
+
+ attrs = (CARD32 *) (req + 1);
+ width = 0;
+ height = 0;
+
+ for (i = 0; i < req->numAttribs; i++) {
+ switch (attrs[i * 2]) {
+ case GLX_PBUFFER_WIDTH:
+ width = attrs[i * 2 + 1];
+ break;
+ case GLX_PBUFFER_HEIGHT:
+ height = attrs[i * 2 + 1];
+ break;
+ case GLX_LARGEST_PBUFFER:
+ case GLX_PRESERVED_CONTENTS:
+ /* FIXME: huh... */
+ break;
+ }
+ }
+
+ return DoCreatePbuffer(cl->client, req->screen, req->fbconfig,
+ width, height, req->pbuffer);
+}
+
+int __glXDisp_CreateGLXPbufferSGIX(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXCreateGLXPbufferSGIXReq *req = (xGLXCreateGLXPbufferSGIXReq *) pc;
+
+ REQUEST_AT_LEAST_SIZE(xGLXCreateGLXPbufferSGIXReq);
+
+ return DoCreatePbuffer(cl->client, req->screen, req->fbconfig,
+ req->width, req->height, req->pbuffer);
+}
+
+int __glXDisp_DestroyPbuffer(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXDestroyPbufferReq *req = (xGLXDestroyPbufferReq *) pc;
+
+ REQUEST_SIZE_MATCH(xGLXDestroyPbufferReq);
+
+ return DoDestroyDrawable(cl, req->pbuffer, GLX_DRAWABLE_PBUFFER);
+}
+
+int __glXDisp_DestroyGLXPbufferSGIX(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXDestroyGLXPbufferSGIXReq *req = (xGLXDestroyGLXPbufferSGIXReq *) pc;
+
+ REQUEST_SIZE_MATCH(xGLXDestroyGLXPbufferSGIXReq);
+
+ return DoDestroyDrawable(cl, req->pbuffer, GLX_DRAWABLE_PBUFFER);
+}
+
+static int
+DoChangeDrawableAttributes(ClientPtr client, XID glxdrawable,
+ int numAttribs, CARD32 *attribs)
+{
+ __GLXdrawable *pGlxDraw;
+ int i, err;
+
+ if (!validGlxDrawable(client, glxdrawable, GLX_DRAWABLE_ANY,
+ DixSetAttrAccess, &pGlxDraw, &err))
+ return err;
+
+ for (i = 0; i < numAttribs; i++) {
+ switch(attribs[i * 2]) {
+ case GLX_EVENT_MASK:
+ /* All we do is to record the event mask so we can send it
+ * back when queried. We never actually clobber the
+ * pbuffers, so we never need to send out the event. */
+ pGlxDraw->eventMask = attribs[i * 2 + 1];
+ break;
+ }
+ }
+
+ return Success;
+}
+
+int __glXDisp_ChangeDrawableAttributes(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXChangeDrawableAttributesReq *req =
+ (xGLXChangeDrawableAttributesReq *) pc;
+
+ REQUEST_AT_LEAST_SIZE(xGLXChangeDrawableAttributesReq);
+ if (req->numAttribs > (UINT32_MAX >> 3)) {
+ client->errorValue = req->numAttribs;
+ return BadValue;
+ }
+#if 0
+ /* mesa sends an additional 8 bytes */
+ REQUEST_FIXED_SIZE(xGLXChangeDrawableAttributesReq, req->numAttribs << 3);
+#else
+ if (((sizeof(xGLXChangeDrawableAttributesReq) + (req->numAttribs << 3)) >> 2) < client->req_len)
+ return BadLength;
+#endif
+
+ return DoChangeDrawableAttributes(cl->client, req->drawable,
+ req->numAttribs, (CARD32 *) (req + 1));
+}
+
+int __glXDisp_ChangeDrawableAttributesSGIX(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXChangeDrawableAttributesSGIXReq *req =
+ (xGLXChangeDrawableAttributesSGIXReq *)pc;
+
+ REQUEST_AT_LEAST_SIZE(xGLXChangeDrawableAttributesSGIXReq);
+ if (req->numAttribs > (UINT32_MAX >> 3)) {
+ client->errorValue = req->numAttribs;
+ return BadValue;
+ }
+ REQUEST_FIXED_SIZE(xGLXChangeDrawableAttributesSGIXReq, req->numAttribs << 3);
+
+ return DoChangeDrawableAttributes(cl->client, req->drawable,
+ req->numAttribs, (CARD32 *) (req + 1));
+}
+
+int __glXDisp_CreateWindow(__GLXclientState *cl, GLbyte *pc)
+{
+ xGLXCreateWindowReq *req = (xGLXCreateWindowReq *) pc;
+ __GLXconfig *config;
+ __GLXscreen *pGlxScreen;
+ ClientPtr client = cl->client;
+ DrawablePtr pDraw;
+ int err;
+
+ REQUEST_AT_LEAST_SIZE(xGLXCreateWindowReq);
+ if (req->numAttribs > (UINT32_MAX >> 3)) {
+ client->errorValue = req->numAttribs;
+ return BadValue;
+ }
+ REQUEST_FIXED_SIZE(xGLXCreateWindowReq, req->numAttribs << 3);
+
+ LEGAL_NEW_RESOURCE(req->glxwindow, client);
+
+ if (!validGlxScreen(client, req->screen, &pGlxScreen, &err))
+ return err;
+ if (!validGlxFBConfig(client, pGlxScreen, req->fbconfig, &config, &err))
+ return err;
+
+ err = dixLookupDrawable(&pDraw, req->window, client, 0, DixAddAccess);
+ if (err != Success || pDraw->type != DRAWABLE_WINDOW) {
+ client->errorValue = req->window;
+ return BadWindow;
+ }
+
+ if (!validGlxFBConfigForWindow(client, config, pDraw, &err))
+ return err;
+
+ return DoCreateGLXDrawable(client, pGlxScreen, config,
+ pDraw, req->window,
+ req->glxwindow, GLX_DRAWABLE_WINDOW);
+}
+
+int __glXDisp_DestroyWindow(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXDestroyWindowReq *req = (xGLXDestroyWindowReq *) pc;
+
+ /* mesa's glXDestroyWindow used to set length to 3 instead of 2 */
+ REQUEST_AT_LEAST_SIZE(xGLXDestroyWindowReq);
+
+ return DoDestroyDrawable(cl, req->glxwindow, GLX_DRAWABLE_WINDOW);
+}
+
+
+/*****************************************************************************/
+
+/*
+** NOTE: There is no portable implementation for swap buffers as of
+** this time that is of value. Consequently, this code must be
+** implemented by somebody other than SGI.
+*/
+int __glXDisp_SwapBuffers(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXSwapBuffersReq *req = (xGLXSwapBuffersReq *) pc;
+ GLXContextTag tag;
+ XID drawId;
+ __GLXcontext *glxc = NULL;
+ __GLXdrawable *pGlxDraw;
+ int error;
+
+ REQUEST_SIZE_MATCH(xGLXSwapBuffersReq);
+
+ tag = req->contextTag;
+ drawId = req->drawable;
+ if (tag) {
+ glxc = __glXLookupContextByTag(cl, tag);
+ if (!glxc) {
+ return __glXError(GLXBadContextTag);
+ }
+ /*
+ ** The calling thread is swapping its current drawable. In this case,
+ ** glxSwapBuffers is in both GL and X streams, in terms of
+ ** sequentiality.
+ */
+ if (__glXForceCurrent(cl, tag, &error)) {
+ /*
+ ** Do whatever is needed to make sure that all preceding requests
+ ** in both streams are completed before the swap is executed.
+ */
+ CALL_Finish( GET_DISPATCH(), () );
+ __GLX_NOTE_FLUSHED_CMDS(glxc);
+ } else {
+ return error;
+ }
+ }
+
+ pGlxDraw = __glXGetDrawable(glxc, drawId, client, &error);
+ if (pGlxDraw == NULL)
+ return error;
+
+ if (pGlxDraw->type == DRAWABLE_WINDOW &&
+ (*pGlxDraw->swapBuffers)(cl->client, pGlxDraw) == GL_FALSE)
+ return __glXError(GLXBadDrawable);
+
+ return Success;
+}
+
+
+static int
+DoQueryContext(__GLXclientState *cl, GLXContextID gcId)
+{
+ ClientPtr client = cl->client;
+ __GLXcontext *ctx;
+ xGLXQueryContextInfoEXTReply reply;
+ int nProps;
+ int *sendBuf, *pSendBuf;
+ int nReplyBytes;
+ int err;
+
+ if (!validGlxContext(cl->client, gcId, DixReadAccess, &ctx, &err))
+ return err;
+
+ nProps = 3;
+ reply.length = nProps << 1;
+ reply.type = X_Reply;
+ reply.sequenceNumber = client->sequence;
+ reply.n = nProps;
+
+ nReplyBytes = reply.length << 2;
+ sendBuf = (int *)malloc((size_t)nReplyBytes);
+ if (sendBuf == NULL) {
+ return __glXError(GLXBadContext); /* XXX: Is this correct? */
+ }
+ pSendBuf = sendBuf;
+ *pSendBuf++ = GLX_SHARE_CONTEXT_EXT;
+ *pSendBuf++ = (int)(ctx->share_id);
+ *pSendBuf++ = GLX_VISUAL_ID_EXT;
+ *pSendBuf++ = (int)(ctx->config->visualID);
+ *pSendBuf++ = GLX_SCREEN_EXT;
+ *pSendBuf++ = (int)(ctx->pGlxScreen->pScreen->myNum);
+
+ if (client->swapped) {
+ __glXSwapQueryContextInfoEXTReply(client, &reply, sendBuf);
+ } else {
+ WriteToClient(client, sz_xGLXQueryContextInfoEXTReply, (char *)&reply);
+ WriteToClient(client, nReplyBytes, (char *)sendBuf);
+ }
+ free((char *)sendBuf);
+
+ return Success;
+}
+
+int __glXDisp_QueryContextInfoEXT(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXQueryContextInfoEXTReq *req = (xGLXQueryContextInfoEXTReq *) pc;
+
+ REQUEST_SIZE_MATCH(xGLXQueryContextInfoEXTReq);
+
+ return DoQueryContext(cl, req->context);
+}
+
+int __glXDisp_QueryContext(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXQueryContextReq *req = (xGLXQueryContextReq *) pc;
+
+ REQUEST_SIZE_MATCH(xGLXQueryContextReq);
+
+ return DoQueryContext(cl, req->context);
+}
+
+int __glXDisp_BindTexImageEXT(__GLXclientState *cl, GLbyte *pc)
+{
+ xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;
+ ClientPtr client = cl->client;
+ __GLXcontext *context;
+ __GLXdrawable *pGlxDraw;
+ GLXDrawable drawId;
+ int buffer;
+ int error;
+ CARD32 num_attribs;
+
+ if ((sizeof(xGLXVendorPrivateReq) + 12) >> 2 > client->req_len)
+ return BadLength;
+
+ pc += __GLX_VENDPRIV_HDR_SIZE;
+
+ drawId = *((CARD32 *) (pc));
+ buffer = *((INT32 *) (pc + 4));
+ num_attribs = *((CARD32 *) (pc + 8));
+ if (num_attribs > (UINT32_MAX >> 3)) {
+ client->errorValue = num_attribs;
+ return BadValue;
+ }
+ REQUEST_FIXED_SIZE(xGLXVendorPrivateReq, 12 + (num_attribs << 3));
+
+ if (buffer != GLX_FRONT_LEFT_EXT)
+ return __glXError(GLXBadPixmap);
+
+ context = __glXForceCurrent (cl, req->contextTag, &error);
+ if (!context)
+ return error;
+
+ if (!validGlxDrawable(client, drawId, GLX_DRAWABLE_PIXMAP,
+ DixReadAccess, &pGlxDraw, &error))
+ return error;
+
+ if (!context->textureFromPixmap)
+ return __glXError(GLXUnsupportedPrivateRequest);
+
+ return context->textureFromPixmap->bindTexImage(context,
+ buffer,
+ pGlxDraw);
+}
+
+int __glXDisp_ReleaseTexImageEXT(__GLXclientState *cl, GLbyte *pc)
+{
+ xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;
+ ClientPtr client = cl->client;
+ __GLXdrawable *pGlxDraw;
+ __GLXcontext *context;
+ GLXDrawable drawId;
+ int buffer;
+ int error;
+
+ REQUEST_FIXED_SIZE(xGLXVendorPrivateReq, 8);
+
+ pc += __GLX_VENDPRIV_HDR_SIZE;
+
+ drawId = *((CARD32 *) (pc));
+ buffer = *((INT32 *) (pc + 4));
+
+ context = __glXForceCurrent (cl, req->contextTag, &error);
+ if (!context)
+ return error;
+
+ if (!validGlxDrawable(client, drawId, GLX_DRAWABLE_PIXMAP,
+ DixReadAccess, &pGlxDraw, &error))
+ return error;
+
+ if (!context->textureFromPixmap)
+ return __glXError(GLXUnsupportedPrivateRequest);
+
+ return context->textureFromPixmap->releaseTexImage(context,
+ buffer,
+ pGlxDraw);
+}
+
+int __glXDisp_CopySubBufferMESA(__GLXclientState *cl, GLbyte *pc)
+{
+ xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;
+ GLXContextTag tag = req->contextTag;
+ __GLXcontext *glxc = NULL;
+ __GLXdrawable *pGlxDraw;
+ ClientPtr client = cl->client;
+ GLXDrawable drawId;
+ int error;
+ int x, y, width, height;
+
+ (void) client;
+ (void) req;
+
+ REQUEST_FIXED_SIZE(xGLXVendorPrivateReq, 20);
+
+ pc += __GLX_VENDPRIV_HDR_SIZE;
+
+ drawId = *((CARD32 *) (pc));
+ x = *((INT32 *) (pc + 4));
+ y = *((INT32 *) (pc + 8));
+ width = *((INT32 *) (pc + 12));
+ height = *((INT32 *) (pc + 16));
+
+ if (tag) {
+ glxc = __glXLookupContextByTag(cl, tag);
+ if (!glxc) {
+ return __glXError(GLXBadContextTag);
+ }
+ /*
+ ** The calling thread is swapping its current drawable. In this case,
+ ** glxSwapBuffers is in both GL and X streams, in terms of
+ ** sequentiality.
+ */
+ if (__glXForceCurrent(cl, tag, &error)) {
+ /*
+ ** Do whatever is needed to make sure that all preceding requests
+ ** in both streams are completed before the swap is executed.
+ */
+ CALL_Finish( GET_DISPATCH(), () );
+ __GLX_NOTE_FLUSHED_CMDS(glxc);
+ } else {
+ return error;
+ }
+ }
+
+ pGlxDraw = __glXGetDrawable(glxc, drawId, client, &error);
+ if (!pGlxDraw)
+ return error;
+
+ if (pGlxDraw == NULL ||
+ pGlxDraw->type != GLX_DRAWABLE_WINDOW ||
+ pGlxDraw->copySubBuffer == NULL)
+ return __glXError(GLXBadDrawable);
+
+ (*pGlxDraw->copySubBuffer)(pGlxDraw, x, y, width, height);
+
+ return Success;
+}
+
+/*
+** Get drawable attributes
+*/
+static int
+DoGetDrawableAttributes(__GLXclientState *cl, XID drawId)
+{
+ ClientPtr client = cl->client;
+ xGLXGetDrawableAttributesReply reply;
+ __GLXdrawable *pGlxDraw;
+ CARD32 attributes[6];
+ int numAttribs, error;
+
+ if (!validGlxDrawable(client, drawId, GLX_DRAWABLE_ANY,
+ DixGetAttrAccess, &pGlxDraw, &error))
+ return error;
+
+ numAttribs = 3;
+ reply.length = numAttribs << 1;
+ reply.type = X_Reply;
+ reply.sequenceNumber = client->sequence;
+ reply.numAttribs = numAttribs;
+
+ attributes[0] = GLX_TEXTURE_TARGET_EXT;
+ attributes[1] = pGlxDraw->target == GL_TEXTURE_2D ? GLX_TEXTURE_2D_EXT :
+ GLX_TEXTURE_RECTANGLE_EXT;
+ attributes[2] = GLX_Y_INVERTED_EXT;
+ attributes[3] = GL_FALSE;
+ attributes[4] = GLX_EVENT_MASK;
+ attributes[5] = pGlxDraw->eventMask;
+
+ if (client->swapped) {
+ __glXSwapGetDrawableAttributesReply(client, &reply, attributes);
+ } else {
+ WriteToClient(client, sz_xGLXGetDrawableAttributesReply,
+ (char *)&reply);
+ WriteToClient(client, reply.length * sizeof (CARD32),
+ (char *)attributes);
+ }
+
+ return Success;
+}
+
+int __glXDisp_GetDrawableAttributes(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXGetDrawableAttributesReq *req = (xGLXGetDrawableAttributesReq *)pc;
+
+ /* this should be REQUEST_SIZE_MATCH, but mesa sends an additional 4 bytes */
+ REQUEST_AT_LEAST_SIZE(xGLXGetDrawableAttributesReq);
+
+ return DoGetDrawableAttributes(cl, req->drawable);
+}
+
+int __glXDisp_GetDrawableAttributesSGIX(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXGetDrawableAttributesSGIXReq *req =
+ (xGLXGetDrawableAttributesSGIXReq *)pc;
+
+ REQUEST_SIZE_MATCH(xGLXGetDrawableAttributesSGIXReq);
+
+ return DoGetDrawableAttributes(cl, req->drawable);
+}
+
+/************************************************************************/
+
+/*
+** Render and Renderlarge are not in the GLX API. They are used by the GLX
+** client library to send batches of GL rendering commands.
+*/
+
+/*
+** Execute all the drawing commands in a request.
+*/
+int __glXDisp_Render(__GLXclientState *cl, GLbyte *pc)
+{
+ xGLXRenderReq *req;
+ ClientPtr client= cl->client;
+ int left, cmdlen, error;
+ int commandsDone;
+ CARD16 opcode;
+ __GLXrenderHeader *hdr;
+ __GLXcontext *glxc;
+ __GLX_DECLARE_SWAP_VARIABLES;
+
+ REQUEST_AT_LEAST_SIZE(xGLXRenderReq);
+
+ req = (xGLXRenderReq *) pc;
+ if (client->swapped) {
+ __GLX_SWAP_SHORT(&req->length);
+ __GLX_SWAP_INT(&req->contextTag);
+ }
+
+ glxc = __glXForceCurrent(cl, req->contextTag, &error);
+ if (!glxc) {
+ return error;
+ }
+
+ commandsDone = 0;
+ pc += sz_xGLXRenderReq;
+ left = (req->length << 2) - sz_xGLXRenderReq;
+ while (left > 0) {
+ __GLXrenderSizeData entry;
+ int extra;
+ __GLXdispatchRenderProcPtr proc;
+ int err;
+
+ if (left < sizeof(__GLXrenderHeader))
+ return BadLength;
+
+ /*
+ ** Verify that the header length and the overall length agree.
+ ** Also, each command must be word aligned.
+ */
+ hdr = (__GLXrenderHeader *) pc;
+ if (client->swapped) {
+ __GLX_SWAP_SHORT(&hdr->length);
+ __GLX_SWAP_SHORT(&hdr->opcode);
+ }
+ cmdlen = hdr->length;
+ opcode = hdr->opcode;
+
+ /*
+ ** Check for core opcodes and grab entry data.
+ */
+ err = __glXGetProtocolSizeData(& Render_dispatch_info, opcode, & entry);
+ proc = (__GLXdispatchRenderProcPtr)
+ __glXGetProtocolDecodeFunction(& Render_dispatch_info,
+ opcode, client->swapped);
+
+ if ((err < 0) || (proc == NULL)) {
+ client->errorValue = commandsDone;
+ return __glXError(GLXBadRenderRequest);
+ }
+
+ if (entry.varsize) {
+ /* variable size command */
+ extra = (*entry.varsize)(pc + __GLX_RENDER_HDR_SIZE,
+ client->swapped);
+ if (extra < 0) {
+ extra = 0;
+ }
+ if (cmdlen != __GLX_PAD(entry.bytes + extra)) {
+ return BadLength;
+ }
+ } else {
+ /* constant size command */
+ if (cmdlen != __GLX_PAD(entry.bytes)) {
+ return BadLength;
+ }
+ }
+ if (left < cmdlen) {
+ return BadLength;
+ }
+
+ /*
+ ** Skip over the header and execute the command. We allow the
+ ** caller to trash the command memory. This is useful especially
+ ** for things that require double alignment - they can just shift
+ ** the data towards lower memory (trashing the header) by 4 bytes
+ ** and achieve the required alignment.
+ */
+ (*proc)(pc + __GLX_RENDER_HDR_SIZE);
+ pc += cmdlen;
+ left -= cmdlen;
+ commandsDone++;
+ }
+ __GLX_NOTE_UNFLUSHED_CMDS(glxc);
+ return Success;
+}
+
+
+/*
+** Execute a large rendering request (one that spans multiple X requests).
+*/
+int __glXDisp_RenderLarge(__GLXclientState *cl, GLbyte *pc)
+{
+ xGLXRenderLargeReq *req;
+ ClientPtr client= cl->client;
+ size_t dataBytes;
+ __GLXrenderLargeHeader *hdr;
+ __GLXcontext *glxc;
+ int error;
+ CARD16 opcode;
+ __GLX_DECLARE_SWAP_VARIABLES;
+
+ req = (xGLXRenderLargeReq *) pc;
+ if (client->swapped) {
+ __GLX_SWAP_SHORT(&req->length);
+ __GLX_SWAP_INT(&req->contextTag);
+ __GLX_SWAP_INT(&req->dataBytes);
+ __GLX_SWAP_SHORT(&req->requestNumber);
+ __GLX_SWAP_SHORT(&req->requestTotal);
+ }
+
+ glxc = __glXForceCurrent(cl, req->contextTag, &error);
+ if (!glxc) {
+ /* Reset in case this isn't 1st request. */
+ __glXResetLargeCommandStatus(cl);
+ return error;
+ }
+ dataBytes = req->dataBytes;
+
+ /*
+ ** Check the request length.
+ */
+ if ((req->length << 2) != __GLX_PAD(dataBytes) + sz_xGLXRenderLargeReq) {
+ client->errorValue = req->length;
+ /* Reset in case this isn't 1st request. */
+ __glXResetLargeCommandStatus(cl);
+ return BadLength;
+ }
+ pc += sz_xGLXRenderLargeReq;
+
+ if (cl->largeCmdRequestsSoFar == 0) {
+ __GLXrenderSizeData entry;
+ int extra;
+ size_t cmdlen;
+ int err;
+
+ /*
+ ** This is the first request of a multi request command.
+ ** Make enough space in the buffer, then copy the entire request.
+ */
+ if (req->requestNumber != 1) {
+ client->errorValue = req->requestNumber;
+ return __glXError(GLXBadLargeRequest);
+ }
+
+ hdr = (__GLXrenderLargeHeader *) pc;
+ if (client->swapped) {
+ __GLX_SWAP_INT(&hdr->length);
+ __GLX_SWAP_INT(&hdr->opcode);
+ }
+ cmdlen = hdr->length;
+ opcode = hdr->opcode;
+
+ /*
+ ** Check for core opcodes and grab entry data.
+ */
+ err = __glXGetProtocolSizeData(& Render_dispatch_info, opcode, & entry);
+ if (err < 0) {
+ client->errorValue = opcode;
+ return __glXError(GLXBadLargeRequest);
+ }
+
+ if (entry.varsize) {
+ /*
+ ** If it's a variable-size command (a command whose length must
+ ** be computed from its parameters), all the parameters needed
+ ** will be in the 1st request, so it's okay to do this.
+ */
+ extra = (*entry.varsize)(pc + __GLX_RENDER_LARGE_HDR_SIZE,
+ client->swapped);
+ if (extra < 0) {
+ extra = 0;
+ }
+ /* large command's header is 4 bytes longer, so add 4 */
+ if (cmdlen != __GLX_PAD(entry.bytes + 4 + extra)) {
+ return BadLength;
+ }
+ } else {
+ /* constant size command */
+ if (cmdlen != __GLX_PAD(entry.bytes + 4)) {
+ return BadLength;
+ }
+ }
+ /*
+ ** Make enough space in the buffer, then copy the entire request.
+ */
+ if (cl->largeCmdBufSize < cmdlen) {
+ if (!cl->largeCmdBuf) {
+ cl->largeCmdBuf = (GLbyte *) malloc(cmdlen);
+ } else {
+ cl->largeCmdBuf = (GLbyte *) realloc(cl->largeCmdBuf, cmdlen);
+ }
+ if (!cl->largeCmdBuf) {
+ return BadAlloc;
+ }
+ cl->largeCmdBufSize = cmdlen;
+ }
+ memcpy(cl->largeCmdBuf, pc, dataBytes);
+
+ cl->largeCmdBytesSoFar = dataBytes;
+ cl->largeCmdBytesTotal = cmdlen;
+ cl->largeCmdRequestsSoFar = 1;
+ cl->largeCmdRequestsTotal = req->requestTotal;
+ return Success;
+
+ } else {
+ /*
+ ** We are receiving subsequent (i.e. not the first) requests of a
+ ** multi request command.
+ */
+
+ /*
+ ** Check the request number and the total request count.
+ */
+ if (req->requestNumber != cl->largeCmdRequestsSoFar + 1) {
+ client->errorValue = req->requestNumber;
+ __glXResetLargeCommandStatus(cl);
+ return __glXError(GLXBadLargeRequest);
+ }
+ if (req->requestTotal != cl->largeCmdRequestsTotal) {
+ client->errorValue = req->requestTotal;
+ __glXResetLargeCommandStatus(cl);
+ return __glXError(GLXBadLargeRequest);
+ }
+
+ /*
+ ** Check that we didn't get too much data.
+ */
+ if ((cl->largeCmdBytesSoFar + dataBytes) > cl->largeCmdBytesTotal) {
+ client->errorValue = dataBytes;
+ __glXResetLargeCommandStatus(cl);
+ return __glXError(GLXBadLargeRequest);
+ }
+ memcpy(cl->largeCmdBuf + cl->largeCmdBytesSoFar, pc, dataBytes);
+ cl->largeCmdBytesSoFar += dataBytes;
+ cl->largeCmdRequestsSoFar++;
+
+ if (req->requestNumber == cl->largeCmdRequestsTotal) {
+ __GLXdispatchRenderProcPtr proc;
+
+ /*
+ ** This is the last request; it must have enough bytes to complete
+ ** the command.
+ */
+ /* NOTE: the two pad macros have been added below; they are needed
+ ** because the client library pads the total byte count, but not
+ ** the per-request byte counts. The Protocol Encoding says the
+ ** total byte count should not be padded, so a proposal will be
+ ** made to the ARB to relax the padding constraint on the total
+ ** byte count, thus preserving backward compatibility. Meanwhile,
+ ** the padding done below fixes a bug that did not allow
+ ** large commands of odd sizes to be accepted by the server.
+ */
+ if (__GLX_PAD(cl->largeCmdBytesSoFar) !=
+ __GLX_PAD(cl->largeCmdBytesTotal)) {
+ client->errorValue = dataBytes;
+ __glXResetLargeCommandStatus(cl);
+ return __glXError(GLXBadLargeRequest);
+ }
+ hdr = (__GLXrenderLargeHeader *) cl->largeCmdBuf;
+ /*
+ ** The opcode and length field in the header had already been
+ ** swapped when the first request was received.
+ **
+ ** Use the opcode to index into the procedure table.
+ */
+ opcode = hdr->opcode;
+
+ proc = (__GLXdispatchRenderProcPtr)
+ __glXGetProtocolDecodeFunction(& Render_dispatch_info, opcode,
+ client->swapped);
+ if (proc == NULL) {
+ client->errorValue = opcode;
+ return __glXError(GLXBadLargeRequest);
+ }
+
+ /*
+ ** Skip over the header and execute the command.
+ */
+ (*proc)(cl->largeCmdBuf + __GLX_RENDER_LARGE_HDR_SIZE);
+ __GLX_NOTE_UNFLUSHED_CMDS(glxc);
+
+ /*
+ ** Reset for the next RenderLarge series.
+ */
+ __glXResetLargeCommandStatus(cl);
+ } else {
+ /*
+ ** This is neither the first nor the last request.
+ */
+ }
+ return Success;
+ }
+}
+
+/************************************************************************/
+
+/*
+** No support is provided for the vendor-private requests other than
+** allocating the entry points in the dispatch table.
+*/
+
+int __glXDisp_VendorPrivate(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;
+ GLint vendorcode = req->vendorCode;
+ __GLXdispatchVendorPrivProcPtr proc;
+
+ REQUEST_AT_LEAST_SIZE(xGLXVendorPrivateReq);
+
+ proc = (__GLXdispatchVendorPrivProcPtr)
+ __glXGetProtocolDecodeFunction(& VendorPriv_dispatch_info,
+ vendorcode, 0);
+ if (proc != NULL) {
+ (*proc)(cl, (GLbyte*)req);
+ return Success;
+ }
+
+ cl->client->errorValue = req->vendorCode;
+ return __glXError(GLXUnsupportedPrivateRequest);
+}
+
+int __glXDisp_VendorPrivateWithReply(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;
+ GLint vendorcode = req->vendorCode;
+ __GLXdispatchVendorPrivProcPtr proc;
+
+ REQUEST_AT_LEAST_SIZE(xGLXVendorPrivateReq);
+
+ proc = (__GLXdispatchVendorPrivProcPtr)
+ __glXGetProtocolDecodeFunction(& VendorPriv_dispatch_info,
+ vendorcode, 0);
+ if (proc != NULL) {
+ return (*proc)(cl, (GLbyte*)req);
+ }
+
+ cl->client->errorValue = vendorcode;
+ return __glXError(GLXUnsupportedPrivateRequest);
+}
+
+int __glXDisp_QueryExtensionsString(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXQueryExtensionsStringReq *req = (xGLXQueryExtensionsStringReq *) pc;
+ xGLXQueryExtensionsStringReply reply;
+ __GLXscreen *pGlxScreen;
+ size_t n, length;
+ char *buf;
+ int err;
+
+ REQUEST_SIZE_MATCH(xGLXQueryExtensionsStringReq);
+
+ if (!validGlxScreen(client, req->screen, &pGlxScreen, &err))
+ return err;
+
+ n = strlen(pGlxScreen->GLXextensions) + 1;
+ length = __GLX_PAD(n) >> 2;
+ reply.type = X_Reply;
+ reply.sequenceNumber = client->sequence;
+ reply.length = length;
+ reply.n = n;
+
+ /* Allocate buffer to make sure it's a multiple of 4 bytes big.*/
+ buf = (char *) malloc(length << 2);
+ if (buf == NULL)
+ return BadAlloc;
+ memcpy(buf, pGlxScreen->GLXextensions, n);
+
+ if (client->swapped) {
+ glxSwapQueryExtensionsStringReply(client, &reply, buf);
+ } else {
+ WriteToClient(client, sz_xGLXQueryExtensionsStringReply,(char *)&reply);
+ WriteToClient(client, (int)(length << 2), (char *)buf);
+ }
+
+ free(buf);
+ return Success;
+}
+
+int __glXDisp_QueryServerString(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXQueryServerStringReq *req = (xGLXQueryServerStringReq *) pc;
+ xGLXQueryServerStringReply reply;
+ size_t n, length;
+ const char *ptr;
+ char *buf;
+ __GLXscreen *pGlxScreen;
+ int err;
+ char ver_str[16];
+
+ REQUEST_SIZE_MATCH(xGLXQueryServerStringReq);
+
+ if (!validGlxScreen(client, req->screen, &pGlxScreen, &err))
+ return err;
+
+ switch(req->name) {
+ case GLX_VENDOR:
+ ptr = pGlxScreen->GLXvendor;
+ break;
+ case GLX_VERSION:
+ /* Return to the server version rather than the screen version
+ * to prevent confusion when they do not match.
+ */
+ snprintf(ver_str, 16, "%d.%d", glxMajorVersion, glxMinorVersion);
+ ptr = ver_str;
+ break;
+ case GLX_EXTENSIONS:
+ ptr = pGlxScreen->GLXextensions;
+ break;
+ default:
+ return BadValue;
+ }
+
+ n = strlen(ptr) + 1;
+ length = __GLX_PAD(n) >> 2;
+ reply.type = X_Reply;
+ reply.sequenceNumber = client->sequence;
+ reply.length = length;
+ reply.n = n;
+
+ buf = (char *) malloc(length << 2);
+ if (buf == NULL) {
+ return BadAlloc;
+ }
+ memcpy(buf, ptr, n);
+
+ if (client->swapped) {
+ glxSwapQueryServerStringReply(client, &reply, buf);
+ } else {
+ WriteToClient(client, sz_xGLXQueryServerStringReply, (char *)&reply);
+ WriteToClient(client, (int)(length << 2), buf);
+ }
+
+ free(buf);
+ return Success;
+}
+
+int __glXDisp_ClientInfo(__GLXclientState *cl, GLbyte *pc)
+{
+ ClientPtr client = cl->client;
+ xGLXClientInfoReq *req = (xGLXClientInfoReq *) pc;
+ const char *buf;
+
+ REQUEST_AT_LEAST_SIZE(xGLXClientInfoReq);
+
+ buf = (const char *)(req+1);
+ if (!memchr(buf, 0, (client->req_len << 2) - sizeof(xGLXClientInfoReq)))
+ return BadLength;
+
+ cl->GLClientmajorVersion = req->major;
+ cl->GLClientminorVersion = req->minor;
+ free(cl->GLClientextensions);
+ cl->GLClientextensions = strdup(buf);
+
+ return Success;
+}
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