diff options
Diffstat (limited to 'xorg-server/glx/glxcmds.c')
| -rw-r--r-- | xorg-server/glx/glxcmds.c | 4665 |
1 files changed, 2334 insertions, 2331 deletions
diff --git a/xorg-server/glx/glxcmds.c b/xorg-server/glx/glxcmds.c index b524597a8..d5b764fd0 100644 --- a/xorg-server/glx/glxcmds.c +++ b/xorg-server/glx/glxcmds.c @@ -1,2331 +1,2334 @@ -/*
- * 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 || (*context)->idExists == GL_FALSE) {
- client->errorValue = id;
- if (*err == BadValue || *err == Success)
- *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;
-
- glxc->idExists = GL_FALSE;
- if (!glxc->isCurrent)
- FreeResourceByType(req->context, __glXContextRes, FALSE);
-
- return Success;
-}
-
-/*
- * This will return "deleted" contexts, ie, where idExists is GL_FALSE.
- * Contrast validGlxContext, which will not. We're cheating here and
- * using the XID as the context tag, which is fine as long as we defer
- * actually destroying the context until it's no longer referenced, and
- * block clients from trying to MakeCurrent on contexts that are on the
- * way to destruction. Notice that DoMakeCurrent calls validGlxContext
- * for new contexts but __glXLookupContextByTag for previous contexts.
- */
-__GLXcontext *__glXLookupContextByTag(__GLXclientState *cl, GLXContextTag tag)
-{
- __GLXcontext *ret;
-
- if (dixLookupResourceByType((void **)&ret, tag, __glXContextRes,
- cl->client, DixUseAccess) == Success)
- return ret;
-
- return NULL;
-}
-
-/*****************************************************************************/
-
-static void StopUsingContext(__GLXcontext *glxc)
-{
- if (glxc) {
- if (glxc == __glXLastContext) {
- /* Tell server GL library */
- __glXLastContext = 0;
- }
- glxc->isCurrent = GL_FALSE;
- if (!glxc->idExists) {
- FreeResourceByType(glxc->id, __glXContextRes, FALSE);
- }
- }
-}
-
-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 (prevglxc->hasUnflushedCommands) {
- if (__glXForceCurrent(cl, tag, (int *)&error)) {
- CALL_Flush( GET_DISPATCH(), () );
- prevglxc->hasUnflushedCommands = GL_FALSE;
- } 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;
- }
-
- StopUsingContext(prevglxc);
-
- if (glxc) {
- StartUsingContext(cl, glxc);
- reply.contextTag = glxc->id;
- } 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(), () );
- tagcx->hasUnflushedCommands = GL_FALSE;
- } 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(), () );
- glxc->hasUnflushedCommands = GL_FALSE;
- } 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(), () );
- glxc->hasUnflushedCommands = GL_FALSE;
- } 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++;
- }
- glxc->hasUnflushedCommands = GL_TRUE;
- 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);
- glxc->hasUnflushedCommands = GL_TRUE;
-
- /*
- ** 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 || (*context)->idExists == GL_FALSE) { + client->errorValue = id; + if (*err == BadValue || *err == Success) + *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; + + glxc->idExists = GL_FALSE; + if (!glxc->isCurrent) + FreeResourceByType(req->context, __glXContextRes, FALSE); + + return Success; +} + +/* + * This will return "deleted" contexts, ie, where idExists is GL_FALSE. + * Contrast validGlxContext, which will not. We're cheating here and + * using the XID as the context tag, which is fine as long as we defer + * actually destroying the context until it's no longer referenced, and + * block clients from trying to MakeCurrent on contexts that are on the + * way to destruction. Notice that DoMakeCurrent calls validGlxContext + * for new contexts but __glXLookupContextByTag for previous contexts. + */ +__GLXcontext *__glXLookupContextByTag(__GLXclientState *cl, GLXContextTag tag) +{ + __GLXcontext *ret; + + if (dixLookupResourceByType((void **)&ret, tag, __glXContextRes, + cl->client, DixUseAccess) == Success) + return ret; + + return NULL; +} + +/*****************************************************************************/ + +static void StopUsingContext(__GLXcontext *glxc) +{ + if (glxc) { + if (glxc == __glXLastContext) { + /* Tell server GL library */ + __glXLastContext = 0; + } + glxc->isCurrent = GL_FALSE; + if (!glxc->idExists) { + FreeResourceByType(glxc->id, __glXContextRes, FALSE); + } + } +} + +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 (prevglxc->hasUnflushedCommands) { + if (__glXForceCurrent(cl, tag, (int *)&error)) { + CALL_Flush( GET_DISPATCH(), () ); + prevglxc->hasUnflushedCommands = GL_FALSE; + } 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; + } + + StopUsingContext(prevglxc); + + if (glxc) { + StartUsingContext(cl, glxc); + reply.contextTag = glxc->id; + } 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(), () ); + tagcx->hasUnflushedCommands = GL_FALSE; + } 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; + } + + /* + * Windows aren't refcounted, so track both the X and the GLX window + * so we get called regardless of destruction order. + */ + if (drawableId != glxDrawableId && type == GLX_DRAWABLE_WINDOW && + !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); + + ((PixmapPtr)pDraw)->refcnt++; + + 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(), () ); + glxc->hasUnflushedCommands = GL_FALSE; + } 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(), () ); + glxc->hasUnflushedCommands = GL_FALSE; + } 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++; + } + glxc->hasUnflushedCommands = GL_TRUE; + 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); + glxc->hasUnflushedCommands = GL_TRUE; + + /* + ** 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; +} |