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xenocara/xserver/glx/glxcmds.c

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/*
** License Applicability. Except to the extent portions of this file are
** made subject to an alternative license as permitted in the SGI Free
** Software License B, Version 1.1 (the "License"), the contents of this
** file are subject only to the provisions of the License. You may not use
** this file except in compliance with the License. You may obtain a copy
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
**
** http://oss.sgi.com/projects/FreeB
**
** Note that, as provided in the License, the Software is distributed on an
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
**
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
**
** Additional Notice Provisions: The application programming interfaces
** established by SGI in conjunction with the Original Code are The
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
** Window System(R) (Version 1.3), released October 19, 1998. This software
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
**
*/
#define NEED_REPLIES
#define FONT_PCF
#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 "g_disptab.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"
void
GlxSetRenderTables (struct _glapi_table *table)
{
_glapi_set_dispatch (table);
}
static int
validGlxScreen(ClientPtr client, int screen, __GLXscreen **pGlxScreen, int *err)
{
/*
** Check if screen exists.
*/
if (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;
}
void
__glXContextDestroy(__GLXcontext *context)
{
if (!context->isDirect)
__glXDeassociateContext(context);
__glXFlushContextCache();
}
static void __glXdirectContextDestroy(__GLXcontext *context)
{
__glXContextDestroy(context);
xfree(context);
}
static __GLXcontext *__glXdirectContextCreate(__GLXscreen *screen,
__GLXconfig *modes,
__GLXcontext *shareContext)
{
__GLXcontext *context;
context = xalloc (sizeof (__GLXcontext));
if (context == NULL)
return NULL;
memset(context, 0, sizeof *context);
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;
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 {
shareglxc = (__GLXcontext *) LookupIDByType(shareList, __glXContextRes);
if (!shareglxc) {
client->errorValue = shareList;
return __glXError(GLXBadContext);
}
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;
return Success;
}
int __glXDisp_CreateContext(__GLXclientState *cl, GLbyte *pc)
{
xGLXCreateContextReq *req = (xGLXCreateContextReq *) pc;
__GLXconfig *config;
__GLXscreen *pGlxScreen;
int err;
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)
{
xGLXCreateNewContextReq *req = (xGLXCreateNewContextReq *) pc;
__GLXconfig *config;
__GLXscreen *pGlxScreen;
int err;
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)
{
xGLXCreateContextWithConfigSGIXReq *req =
(xGLXCreateContextWithConfigSGIXReq *) pc;
__GLXconfig *config;
__GLXscreen *pGlxScreen;
int err;
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;
GLXContextID gcId = req->context;
__GLXcontext *glxc;
glxc = (__GLXcontext *) LookupIDByType(gcId, __glXContextRes);
if (glxc) {
/*
** Just free the resource; don't actually destroy the context,
** because it might be in use. The
** destroy method will be called by the resource destruction routine
** if necessary.
*/
FreeResourceByType(gcId, __glXContextRes, FALSE);
return Success;
} else {
client->errorValue = gcId;
return __glXError(GLXBadContext);
}
}
/*****************************************************************************/
/*
** For each client, the server keeps a table of all the contexts that are
** current for that client (each thread of a client may have its own current
** context). These routines add, change, and lookup contexts in the table.
*/
/*
** Add a current context, and return the tag that will be used to refer to it.
*/
static int AddCurrentContext(__GLXclientState *cl, __GLXcontext *glxc)
{
int i;
int num = cl->numCurrentContexts;
__GLXcontext **table = cl->currentContexts;
if (!glxc) return -1;
/*
** Try to find an empty slot and use it.
*/
for (i=0; i < num; i++) {
if (!table[i]) {
table[i] = glxc;
return i+1;
}
}
/*
** Didn't find a free slot, so we'll have to grow the table.
*/
if (!num) {
table = (__GLXcontext **) xalloc(sizeof(__GLXcontext *));
} else {
table = (__GLXcontext **) xrealloc(table,
(num+1)*sizeof(__GLXcontext *));
}
table[num] = glxc;
cl->currentContexts = table;
cl->numCurrentContexts++;
return num+1;
}
/*
** Given a tag, change the current context for the corresponding entry.
*/
static void ChangeCurrentContext(__GLXclientState *cl, __GLXcontext *glxc,
GLXContextTag tag)
{
__GLXcontext **table = cl->currentContexts;
table[tag-1] = glxc;
}
/*
** For this implementation we have chosen to simply use the index of the
** context's entry in the table as the context tag. A tag must be greater
** than 0.
*/
__GLXcontext *__glXLookupContextByTag(__GLXclientState *cl, GLXContextTag tag)
{
int num = cl->numCurrentContexts;
if (tag < 1 || tag > num) {
return 0;
} else {
return cl->currentContexts[tag-1];
}
}
/*****************************************************************************/
static void StopUsingContext(__GLXcontext *glxc)
{
if (glxc) {
if (glxc == __glXLastContext) {
/* Tell server GL library */
__glXLastContext = 0;
}
glxc->isCurrent = GL_FALSE;
if (!glxc->idExists) {
__glXFreeContext(glxc);
}
}
}
static void StartUsingContext(__GLXclientState *cl, __GLXcontext *glxc)
{
glxc->isCurrent = GL_TRUE;
}
/**
* Given a drawable ID, get the associated drawable and / or pixmap.
*
* If the specified drawable ID is not a pixmap, \c ppPixmap will be set
* to \c NULL on return. In either case, \c ppDraw will be set to a drawable.
* In the case where the drawable ID is a pixmap, \c ppDraw will be set to
* the drawable associated with that pixmap.
*
* \param glxc Associated GLX context.
* \param drawId ID of the drawable.
* \param client Pointer to the client state.
* \return the __GLXdrawable is returned on success. Otherwise NULL.
*
* \notes This function will need some modification when support pbuffers
* is added.
*/
static __GLXdrawable *
__glXGetDrawable(__GLXcontext *glxc, GLXDrawable drawId, ClientPtr client,
int *error)
{
DrawablePtr pDraw;
__GLXdrawable *pGlxDraw;
int rc;
/* This is the GLX 1.3 case - the client passes in a GLXWindow or
* GLXPixmap and we just return the __GLXdrawable. */
pGlxDraw = (__GLXdrawable *) LookupIDByType(drawId, __glXDrawableRes);
if (pGlxDraw != NULL) {
if (glxc != NULL && pGlxDraw->config != glxc->config) {
client->errorValue = drawId;
*error = BadMatch;
return NULL;
}
return pGlxDraw;
}
/* The drawId wasn't a GLX drawable, so presumably it's a regular
* X window. In that case, we create a shadow GLXWindow for it on
* demand here for pre GLX 1.3 compatibility and use the X Window
* XID as its GLXWindow XID. The client can't explicitly create a
* GLXWindow with the same XID as an X Window, so we wont get any
* resource ID clashes. Effectively, the X Window is now also a
* GLXWindow. */
rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixGetAttrAccess);
if (rc != Success || pDraw->type != DRAWABLE_WINDOW) {
client->errorValue = drawId;
*error = __glXError(GLXBadDrawable);
return NULL;
}
/* If we're not given a context, don't create the __GLXdrawable */
if (glxc == NULL) {
*error = __glXError(GLXBadDrawable);
return NULL;
}
/* We're binding an X Window for the first time and need to create
* a GLX drawable for it. Check that the drawable screen matches
* the context screen and that the context fbconfig is compatible
* with the window visual. */
if (pDraw->pScreen != glxc->pGlxScreen->pScreen ||
!validGlxFBConfigForWindow(client, glxc->config, pDraw, error))
return NULL;
pGlxDraw = glxc->pGlxScreen->createDrawable(glxc->pGlxScreen,
pDraw, 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;
GLint 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;
glxc = (__GLXcontext *) LookupIDByType(contextId, __glXContextRes);
if (!glxc) {
client->errorValue = contextId;
return __glXError(GLXBadContext);
}
if ((glxc != prevglxc) && glxc->isCurrent) {
/* Context is current to somebody else */
return BadAccess;
}
assert( drawId != None );
assert( readId != None );
drawPriv = __glXGetDrawable(glxc, drawId, client, &status);
if (drawPriv == NULL)
return status;
readPriv = __glXGetDrawable(glxc, readId, client, &status);
if (readPriv == NULL)
return status;
} else {
/* Switching to no context. Ignore new drawable. */
glxc = 0;
drawPriv = 0;
readPriv = 0;
}
if (prevglxc) {
/*
** Flush the previous context if needed.
*/
if (__GLX_HAS_UNFLUSHED_CMDS(prevglxc)) {
if (__glXForceCurrent(cl, tag, (int *)&error)) {
CALL_Flush( GET_DISPATCH(), () );
__GLX_NOTE_FLUSHED_CMDS(prevglxc);
} else {
return error;
}
}
/*
** Make the previous context not current.
*/
if (!(*prevglxc->loseCurrent)(prevglxc)) {
return __glXError(GLXBadContext);
}
__glXFlushContextCache();
__glXDeassociateContext(prevglxc);
}
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);
}
/* resize the buffers */
if (!(*drawPriv->resize)(drawPriv)) {
/* could not do initial resize. make current failed */
(*glxc->loseCurrent)(glxc);
glxc->drawPriv = NULL;
glxc->readPriv = NULL;
return __glXError(GLXBadContext);
}
glxc->isCurrent = GL_TRUE;
__glXAssociateContext(glxc);
assert(drawPriv->drawGlxc == glxc);
assert(readPriv->readGlxc == glxc);
}
if (prevglxc) {
ChangeCurrentContext(cl, glxc, tag);
StopUsingContext(prevglxc);
} else {
tag = AddCurrentContext(cl, glxc);
}
if (glxc) {
StartUsingContext(cl, glxc);
reply.contextTag = tag;
} else {
reply.contextTag = 0;
}
reply.length = 0;
reply.type = X_Reply;
reply.sequenceNumber = client->sequence;
if (client->swapped) {
__glXSwapMakeCurrentReply(client, &reply);
} else {
WriteToClient(client, sz_xGLXMakeCurrentReply, (char *)&reply);
}
return Success;
}
int __glXDisp_MakeCurrent(__GLXclientState *cl, GLbyte *pc)
{
xGLXMakeCurrentReq *req = (xGLXMakeCurrentReq *) pc;
return DoMakeCurrent( cl, req->drawable, req->drawable,
req->context, req->oldContextTag );
}
int __glXDisp_MakeContextCurrent(__GLXclientState *cl, GLbyte *pc)
{
xGLXMakeContextCurrentReq *req = (xGLXMakeContextCurrentReq *) pc;
return DoMakeCurrent( cl, req->drawable, req->readdrawable,
req->context, req->oldContextTag );
}
int __glXDisp_MakeCurrentReadSGI(__GLXclientState *cl, GLbyte *pc)
{
xGLXMakeCurrentReadSGIReq *req = (xGLXMakeCurrentReadSGIReq *) pc;
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;
/*
** Find the GL context.
*/
glxc = (__GLXcontext *) LookupIDByType(req->context, __glXContextRes);
if (!glxc) {
client->errorValue = req->context;
return __glXError(GLXBadContext);
}
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;
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 = GLX_SERVER_MAJOR_VERSION;
reply.minorVersion = GLX_SERVER_MINOR_VERSION;
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)
{
xGLXWaitGLReq *req = (xGLXWaitGLReq *)pc;
int error;
if (!__glXForceCurrent(cl, req->contextTag, &error)) {
return error;
}
CALL_Finish( GET_DISPATCH(), () );
return Success;
}
int __glXDisp_WaitX(__GLXclientState *cl, GLbyte *pc)
{
xGLXWaitXReq *req = (xGLXWaitXReq *)pc;
int error;
if (!__glXForceCurrent(cl, req->contextTag, &error)) {
return error;
}
/*
** In a multithreaded server that had separate X and GL threads, we would
** have to wait for the X thread to finish before returning. As it stands,
** this sample implementation only supports singlethreaded servers, and
** nothing needs to be done here.
*/
return Success;
}
int __glXDisp_CopyContext(__GLXclientState *cl, GLbyte *pc)
{
ClientPtr client = cl->client;
xGLXCopyContextReq *req = (xGLXCopyContextReq *) pc;
GLXContextID source = req->source;
GLXContextID dest = req->dest;
GLXContextTag tag = req->contextTag;
unsigned long mask = req->mask;
__GLXcontext *src, *dst;
int error;
/*
** Check that each context exists.
*/
src = (__GLXcontext *) LookupIDByType(source, __glXContextRes);
if (!src) {
client->errorValue = source;
return __glXError(GLXBadContext);
}
dst = (__GLXcontext *) LookupIDByType(dest, __glXContextRes);
if (!dst) {
client->errorValue = dest;
return __glXError(GLXBadContext);
}
/*
** They must be in the same address space, and same screen.
** NOTE: no support for direct rendering contexts here.
*/
if (src->isDirect || dst->isDirect ||
(src->pGlxScreen != dst->pGlxScreen)) {
client->errorValue = source;
return BadMatch;
}
/*
** The destination context must not be current for any client.
*/
if (dst->isCurrent) {
client->errorValue = dest;
return BadAccess;
}
if (tag) {
__GLXcontext *tagcx = __glXLookupContextByTag(cl, tag);
if (!tagcx) {
return __glXError(GLXBadContextTag);
}
if (tagcx != src) {
/*
** This would be caused by a faulty implementation of the client
** library.
*/
return BadMatch;
}
/*
** In this case, glXCopyContext is in both GL and X streams, in terms
** of sequentiality.
*/
if (__glXForceCurrent(cl, tag, &error)) {
/*
** Do whatever is needed to make sure that all preceding requests
** in both streams are completed before the copy is executed.
*/
CALL_Finish( GET_DISPATCH(), () );
__GLX_NOTE_FLUSHED_CMDS(tagcx);
} else {
return error;
}
}
/*
** Issue copy. The only reason for failure is a bad mask.
*/
if (!(*dst->copy)(dst, src, mask)) {
client->errorValue = mask;
return BadValue;
}
return Success;
}
int __glXDisp_GetVisualConfigs(__GLXclientState *cl, GLbyte *pc)
{
xGLXGetVisualConfigsReq *req = (xGLXGetVisualConfigsReq *) pc;
ClientPtr client = cl->client;
xGLXGetVisualConfigsReply reply;
__GLXscreen *pGlxScreen;
__GLXconfig *modes;
CARD32 buf[__GLX_TOTAL_CONFIG];
int p, i, err;
__GLX_DECLARE_SWAP_VARIABLES;
__GLX_DECLARE_SWAP_ARRAY_VARIABLES;
if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
return err;
reply.numVisuals = pGlxScreen->numVisuals;
reply.numProps = __GLX_TOTAL_CONFIG;
reply.length = (reply.numVisuals * __GLX_SIZE_CARD32 * __GLX_TOTAL_CONFIG) >> 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;
/*
** 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;
if (client->swapped) {
__GLX_SWAP_INT_ARRAY(buf, __GLX_TOTAL_CONFIG);
}
WriteToClient(client, __GLX_SIZE_CARD32 * __GLX_TOTAL_CONFIG,
(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)
{
xGLXGetFBConfigsReq *req = (xGLXGetFBConfigsReq *) pc;
return DoGetFBConfigs(cl, req->screen);
}
int __glXDisp_GetFBConfigsSGIX(__GLXclientState *cl, GLbyte *pc)
{
xGLXGetFBConfigsSGIXReq *req = (xGLXGetFBConfigsSGIXReq *) pc;
return DoGetFBConfigs(cl, req->screen);
}
static int
DoCreateGLXDrawable(ClientPtr client, __GLXscreen *pGlxScreen, __GLXconfig *config,
DrawablePtr pDraw, XID glxDrawableId, int type)
{
__GLXdrawable *pGlxDraw;
LEGAL_NEW_RESOURCE(glxDrawableId, client);
if (pGlxScreen->pScreen != pDraw->pScreen)
return BadMatch;
pGlxDraw = pGlxScreen->createDrawable(pGlxScreen, pDraw, type,
glxDrawableId, config);
if (pGlxDraw == NULL)
return BadAlloc;
if (!AddResource(glxDrawableId, __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;
err = dixLookupDrawable(&pDraw, drawableId, client, 0, DixAddAccess);
if (err != Success || pDraw->type != DRAWABLE_PIXMAP) {
client->errorValue = drawableId;
return BadPixmap;
}
err = DoCreateGLXDrawable(client, pGlxScreen, config, pDraw,
glxDrawableId, GLX_DRAWABLE_PIXMAP);
if (err == Success)
((PixmapPtr) pDraw)->refcnt++;
return err;
}
static void
determineTextureTarget(XID glxDrawableID, CARD32 *attribs, CARD32 numAttribs)
{
GLenum target = 0;
int i;
__GLXdrawable *pGlxDraw;
pGlxDraw = LookupIDByType(glxDrawableID, __glXDrawableRes);
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 (!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;
}
int __glXDisp_CreateGLXPixmap(__GLXclientState *cl, GLbyte *pc)
{
xGLXCreateGLXPixmapReq *req = (xGLXCreateGLXPixmapReq *) pc;
__GLXconfig *config;
__GLXscreen *pGlxScreen;
int err;
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)
{
xGLXCreatePixmapReq *req = (xGLXCreatePixmapReq *) pc;
__GLXconfig *config;
__GLXscreen *pGlxScreen;
int err;
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(req->glxpixmap,
(CARD32*) (req + 1), req->numAttribs);
return Success;
}
int __glXDisp_CreateGLXPixmapWithConfigSGIX(__GLXclientState *cl, GLbyte *pc)
{
xGLXCreateGLXPixmapWithConfigSGIXReq *req =
(xGLXCreateGLXPixmapWithConfigSGIXReq *) pc;
__GLXconfig *config;
__GLXscreen *pGlxScreen;
int err;
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)
{
ClientPtr client = cl->client;
__GLXdrawable *pGlxDraw;
/*
** Check it's the right type of drawable.
*/
pGlxDraw = LookupIDByType(glxdrawable, __glXDrawableRes);
if (pGlxDraw == NULL || pGlxDraw->type != type) {
client->errorValue = glxdrawable;
switch (type) {
case GLX_DRAWABLE_WINDOW:
return __glXError(GLXBadWindow);
case GLX_DRAWABLE_PIXMAP:
return __glXError(GLXBadDrawable);
case GLX_DRAWABLE_PBUFFER:
return __glXError(GLXBadPbuffer);
}
}
FreeResource(glxdrawable, FALSE);
return Success;
}
int __glXDisp_DestroyGLXPixmap(__GLXclientState *cl, GLbyte *pc)
{
xGLXDestroyGLXPixmapReq *req = (xGLXDestroyGLXPixmapReq *) pc;
return DoDestroyDrawable(cl, req->glxpixmap, GLX_DRAWABLE_PIXMAP);
}
int __glXDisp_DestroyPixmap(__GLXclientState *cl, GLbyte *pc)
{
xGLXDestroyPixmapReq *req = (xGLXDestroyPixmapReq *) pc;
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;
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);
return DoCreateGLXDrawable(client, pGlxScreen, config, &pPixmap->drawable,
glxDrawableId, GLX_DRAWABLE_PBUFFER);
}
int __glXDisp_CreatePbuffer(__GLXclientState *cl, GLbyte *pc)
{
xGLXCreatePbufferReq *req = (xGLXCreatePbufferReq *) pc;
CARD32 *attrs;
int width, height, i;
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)
{
xGLXCreateGLXPbufferSGIXReq *req = (xGLXCreateGLXPbufferSGIXReq *) pc;
return DoCreatePbuffer(cl->client, req->screen, req->fbconfig,
req->width, req->height, req->pbuffer);
}
int __glXDisp_DestroyPbuffer(__GLXclientState *cl, GLbyte *pc)
{
xGLXDestroyPbufferReq *req = (xGLXDestroyPbufferReq *) pc;
return DoDestroyDrawable(cl, req->pbuffer, GLX_DRAWABLE_PBUFFER);
}
int __glXDisp_DestroyGLXPbufferSGIX(__GLXclientState *cl, GLbyte *pc)
{
xGLXDestroyGLXPbufferSGIXReq *req = (xGLXDestroyGLXPbufferSGIXReq *) pc;
return DoDestroyDrawable(cl, req->pbuffer, GLX_DRAWABLE_PBUFFER);
}
static int
DoChangeDrawableAttributes(ClientPtr client, XID glxdrawable,
int numAttribs, CARD32 *attribs)
{
__GLXdrawable *pGlxDraw;
int i;
pGlxDraw = LookupIDByType(glxdrawable, __glXDrawableRes);
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)
{
xGLXChangeDrawableAttributesReq *req =
(xGLXChangeDrawableAttributesReq *) pc;
return DoChangeDrawableAttributes(cl->client, req->drawable,
req->numAttribs, (CARD32 *) (req + 1));
}
int __glXDisp_ChangeDrawableAttributesSGIX(__GLXclientState *cl, GLbyte *pc)
{
xGLXChangeDrawableAttributesSGIXReq *req =
(xGLXChangeDrawableAttributesSGIXReq *)pc;
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;
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->glxwindow, GLX_DRAWABLE_WINDOW);
}
int __glXDisp_DestroyWindow(__GLXclientState *cl, GLbyte *pc)
{
xGLXDestroyWindowReq *req = (xGLXDestroyWindowReq *) pc;
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 = req->contextTag;
XID drawId = req->drawable;
__GLXcontext *glxc = NULL;
__GLXdrawable *pGlxDraw;
int error;
if (tag) {
glxc = __glXLookupContextByTag(cl, tag);
if (!glxc) {
return __glXError(GLXBadContextTag);
}
/*
** The calling thread is swapping its current drawable. In this case,
** glxSwapBuffers is in both GL and X streams, in terms of
** sequentiality.
*/
if (__glXForceCurrent(cl, tag, &error)) {
/*
** Do whatever is needed to make sure that all preceding requests
** in both streams are completed before the swap is executed.
*/
CALL_Finish( GET_DISPATCH(), () );
__GLX_NOTE_FLUSHED_CMDS(glxc);
} else {
return error;
}
}
pGlxDraw = __glXGetDrawable(glxc, drawId, client, &error);
if (pGlxDraw == NULL)
return error;
if (pGlxDraw->type == DRAWABLE_WINDOW &&
(*pGlxDraw->swapBuffers)(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;
ctx = (__GLXcontext *) LookupIDByType(gcId, __glXContextRes);
if (!ctx) {
client->errorValue = gcId;
return __glXError(GLXBadContext);
}
nProps = 3;
reply.length = nProps << 1;
reply.type = X_Reply;
reply.sequenceNumber = client->sequence;
reply.n = nProps;
nReplyBytes = reply.length << 2;
sendBuf = (int *)xalloc((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);
}
xfree((char *)sendBuf);
return Success;
}
int __glXDisp_QueryContextInfoEXT(__GLXclientState *cl, GLbyte *pc)
{
xGLXQueryContextInfoEXTReq *req = (xGLXQueryContextInfoEXTReq *) pc;
return DoQueryContext(cl, req->context);
}
int __glXDisp_QueryContext(__GLXclientState *cl, GLbyte *pc)
{
xGLXQueryContextReq *req = (xGLXQueryContextReq *) pc;
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;
pc += __GLX_VENDPRIV_HDR_SIZE;
drawId = *((CARD32 *) (pc));
buffer = *((INT32 *) (pc + 4));
if (buffer != GLX_FRONT_LEFT_EXT)
return __glXError(GLXBadPixmap);
context = __glXForceCurrent (cl, req->contextTag, &error);
if (!context)
return error;
pGlxDraw = __glXGetDrawable(NULL, drawId, client, &error);
if (!pGlxDraw || pGlxDraw->type != GLX_DRAWABLE_PIXMAP) {
client->errorValue = drawId;
return __glXError(GLXBadPixmap);
}
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;
pc += __GLX_VENDPRIV_HDR_SIZE;
drawId = *((CARD32 *) (pc));
buffer = *((INT32 *) (pc + 4));
context = __glXForceCurrent (cl, req->contextTag, &error);
if (!context)
return error;
pGlxDraw = __glXGetDrawable(NULL, drawId, client, &error);
if (!pGlxDraw || pGlxDraw->type != GLX_DRAWABLE_PIXMAP) {
client->errorValue = drawId;
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;
pc += __GLX_VENDPRIV_HDR_SIZE;
drawId = *((CARD32 *) (pc));
x = *((INT32 *) (pc + 4));
y = *((INT32 *) (pc + 8));
width = *((INT32 *) (pc + 12));
height = *((INT32 *) (pc + 16));
if (tag) {
glxc = __glXLookupContextByTag(cl, tag);
if (!glxc) {
return __glXError(GLXBadContextTag);
}
/*
** The calling thread is swapping its current drawable. In this case,
** glxSwapBuffers is in both GL and X streams, in terms of
** sequentiality.
*/
if (__glXForceCurrent(cl, tag, &error)) {
/*
** Do whatever is needed to make sure that all preceding requests
** in both streams are completed before the swap is executed.
*/
CALL_Finish( GET_DISPATCH(), () );
__GLX_NOTE_FLUSHED_CMDS(glxc);
} else {
return error;
}
}
pGlxDraw = __glXGetDrawable(glxc, drawId, client, &error);
if (!pGlxDraw)
return error;
if (pGlxDraw == NULL ||
pGlxDraw->type != GLX_DRAWABLE_WINDOW ||
pGlxDraw->copySubBuffer == NULL)
return __glXError(GLXBadDrawable);
(*pGlxDraw->copySubBuffer)(pGlxDraw, x, y, width, height);
return Success;
}
/*
** Get drawable attributes
*/
static int
DoGetDrawableAttributes(__GLXclientState *cl, XID drawId)
{
ClientPtr client = cl->client;
xGLXGetDrawableAttributesReply reply;
__GLXdrawable *pGlxDraw;
CARD32 attributes[6];
int numAttribs, error;
pGlxDraw = __glXGetDrawable(NULL, drawId, client, &error);
if (!pGlxDraw) {
client->errorValue = drawId;
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)
{
xGLXGetDrawableAttributesReq *req = (xGLXGetDrawableAttributesReq *)pc;
return DoGetDrawableAttributes(cl, req->drawable);
}
int __glXDisp_GetDrawableAttributesSGIX(__GLXclientState *cl, GLbyte *pc)
{
xGLXGetDrawableAttributesSGIXReq *req =
(xGLXGetDrawableAttributesSGIXReq *)pc;
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;
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;
/*
** Verify that the header length and the overall length agree.
** Also, each command must be word aligned.
*/
hdr = (__GLXrenderHeader *) pc;
if (client->swapped) {
__GLX_SWAP_SHORT(&hdr->length);
__GLX_SWAP_SHORT(&hdr->opcode);
}
cmdlen = hdr->length;
opcode = hdr->opcode;
/*
** Check for core opcodes and grab entry data.
*/
err = __glXGetProtocolSizeData(& Render_dispatch_info, opcode, & entry);
proc = (__GLXdispatchRenderProcPtr)
__glXGetProtocolDecodeFunction(& Render_dispatch_info,
opcode, client->swapped);
if ((err < 0) || (proc == NULL)) {
client->errorValue = commandsDone;
return __glXError(GLXBadRenderRequest);
}
if (entry.varsize) {
/* variable size command */
extra = (*entry.varsize)(pc + __GLX_RENDER_HDR_SIZE,
client->swapped);
if (extra < 0) {
extra = 0;
}
if (cmdlen != __GLX_PAD(entry.bytes + extra)) {
return BadLength;
}
} else {
/* constant size command */
if (cmdlen != __GLX_PAD(entry.bytes)) {
return BadLength;
}
}
if (left < cmdlen) {
return BadLength;
}
/*
** Skip over the header and execute the command. We allow the
** caller to trash the command memory. This is useful especially
** for things that require double alignment - they can just shift
** the data towards lower memory (trashing the header) by 4 bytes
** and achieve the required alignment.
*/
(*proc)(pc + __GLX_RENDER_HDR_SIZE);
pc += cmdlen;
left -= cmdlen;
commandsDone++;
}
__GLX_NOTE_UNFLUSHED_CMDS(glxc);
return Success;
}
/*
** Execute a large rendering request (one that spans multiple X requests).
*/
int __glXDisp_RenderLarge(__GLXclientState *cl, GLbyte *pc)
{
xGLXRenderLargeReq *req;
ClientPtr client= cl->client;
size_t dataBytes;
__GLXrenderLargeHeader *hdr;
__GLXcontext *glxc;
int error;
CARD16 opcode;
__GLX_DECLARE_SWAP_VARIABLES;
req = (xGLXRenderLargeReq *) pc;
if (client->swapped) {
__GLX_SWAP_SHORT(&req->length);
__GLX_SWAP_INT(&req->contextTag);
__GLX_SWAP_INT(&req->dataBytes);
__GLX_SWAP_SHORT(&req->requestNumber);
__GLX_SWAP_SHORT(&req->requestTotal);
}
glxc = __glXForceCurrent(cl, req->contextTag, &error);
if (!glxc) {
/* Reset in case this isn't 1st request. */
__glXResetLargeCommandStatus(cl);
return error;
}
dataBytes = req->dataBytes;
/*
** Check the request length.
*/
if ((req->length << 2) != __GLX_PAD(dataBytes) + sz_xGLXRenderLargeReq) {
client->errorValue = req->length;
/* Reset in case this isn't 1st request. */
__glXResetLargeCommandStatus(cl);
return BadLength;
}
pc += sz_xGLXRenderLargeReq;
if (cl->largeCmdRequestsSoFar == 0) {
__GLXrenderSizeData entry;
int extra;
size_t cmdlen;
int err;
/*
** This is the first request of a multi request command.
** Make enough space in the buffer, then copy the entire request.
*/
if (req->requestNumber != 1) {
client->errorValue = req->requestNumber;
return __glXError(GLXBadLargeRequest);
}
hdr = (__GLXrenderLargeHeader *) pc;
if (client->swapped) {
__GLX_SWAP_INT(&hdr->length);
__GLX_SWAP_INT(&hdr->opcode);
}
cmdlen = hdr->length;
opcode = hdr->opcode;
/*
** Check for core opcodes and grab entry data.
*/
err = __glXGetProtocolSizeData(& Render_dispatch_info, opcode, & entry);
if (err < 0) {
client->errorValue = opcode;
return __glXError(GLXBadLargeRequest);
}
if (entry.varsize) {
/*
** If it's a variable-size command (a command whose length must
** be computed from its parameters), all the parameters needed
** will be in the 1st request, so it's okay to do this.
*/
extra = (*entry.varsize)(pc + __GLX_RENDER_LARGE_HDR_SIZE,
client->swapped);
if (extra < 0) {
extra = 0;
}
/* large command's header is 4 bytes longer, so add 4 */
if (cmdlen != __GLX_PAD(entry.bytes + 4 + extra)) {
return BadLength;
}
} else {
/* constant size command */
if (cmdlen != __GLX_PAD(entry.bytes + 4)) {
return BadLength;
}
}
/*
** Make enough space in the buffer, then copy the entire request.
*/
if (cl->largeCmdBufSize < cmdlen) {
if (!cl->largeCmdBuf) {
cl->largeCmdBuf = (GLbyte *) xalloc(cmdlen);
} else {
cl->largeCmdBuf = (GLbyte *) xrealloc(cl->largeCmdBuf, cmdlen);
}
if (!cl->largeCmdBuf) {
return BadAlloc;
}
cl->largeCmdBufSize = cmdlen;
}
memcpy(cl->largeCmdBuf, pc, dataBytes);
cl->largeCmdBytesSoFar = dataBytes;
cl->largeCmdBytesTotal = cmdlen;
cl->largeCmdRequestsSoFar = 1;
cl->largeCmdRequestsTotal = req->requestTotal;
return Success;
} else {
/*
** We are receiving subsequent (i.e. not the first) requests of a
** multi request command.
*/
/*
** Check the request number and the total request count.
*/
if (req->requestNumber != cl->largeCmdRequestsSoFar + 1) {
client->errorValue = req->requestNumber;
__glXResetLargeCommandStatus(cl);
return __glXError(GLXBadLargeRequest);
}
if (req->requestTotal != cl->largeCmdRequestsTotal) {
client->errorValue = req->requestTotal;
__glXResetLargeCommandStatus(cl);
return __glXError(GLXBadLargeRequest);
}
/*
** Check that we didn't get too much data.
*/
if ((cl->largeCmdBytesSoFar + dataBytes) > cl->largeCmdBytesTotal) {
client->errorValue = dataBytes;
__glXResetLargeCommandStatus(cl);
return __glXError(GLXBadLargeRequest);
}
memcpy(cl->largeCmdBuf + cl->largeCmdBytesSoFar, pc, dataBytes);
cl->largeCmdBytesSoFar += dataBytes;
cl->largeCmdRequestsSoFar++;
if (req->requestNumber == cl->largeCmdRequestsTotal) {
__GLXdispatchRenderProcPtr proc;
/*
** This is the last request; it must have enough bytes to complete
** the command.
*/
/* NOTE: the two pad macros have been added below; they are needed
** because the client library pads the total byte count, but not
** the per-request byte counts. The Protocol Encoding says the
** total byte count should not be padded, so a proposal will be
** made to the ARB to relax the padding constraint on the total
** byte count, thus preserving backward compatibility. Meanwhile,
** the padding done below fixes a bug that did not allow
** large commands of odd sizes to be accepted by the server.
*/
if (__GLX_PAD(cl->largeCmdBytesSoFar) !=
__GLX_PAD(cl->largeCmdBytesTotal)) {
client->errorValue = dataBytes;
__glXResetLargeCommandStatus(cl);
return __glXError(GLXBadLargeRequest);
}
hdr = (__GLXrenderLargeHeader *) cl->largeCmdBuf;
/*
** The opcode and length field in the header had already been
** swapped when the first request was received.
**
** Use the opcode to index into the procedure table.
*/
opcode = hdr->opcode;
proc = (__GLXdispatchRenderProcPtr)
__glXGetProtocolDecodeFunction(& Render_dispatch_info, opcode,
client->swapped);
if (proc == NULL) {
client->errorValue = opcode;
return __glXError(GLXBadLargeRequest);
}
/*
** Skip over the header and execute the command.
*/
(*proc)(cl->largeCmdBuf + __GLX_RENDER_LARGE_HDR_SIZE);
__GLX_NOTE_UNFLUSHED_CMDS(glxc);
/*
** Reset for the next RenderLarge series.
*/
__glXResetLargeCommandStatus(cl);
} else {
/*
** This is neither the first nor the last request.
*/
}
return Success;
}
}
extern RESTYPE __glXSwapBarrierRes;
int __glXDisp_BindSwapBarrierSGIX(__GLXclientState *cl, GLbyte *pc)
{
ClientPtr client = cl->client;
xGLXBindSwapBarrierSGIXReq *req = (xGLXBindSwapBarrierSGIXReq *) pc;
XID drawable = req->drawable;
int barrier = req->barrier;
DrawablePtr pDraw;
int screen, rc;
__GLXscreen *pGlxScreen;
rc = dixLookupDrawable(&pDraw, drawable, client, 0, DixGetAttrAccess);
pGlxScreen = glxGetScreen(pDraw->pScreen);
if (rc == Success && (pDraw->type == DRAWABLE_WINDOW)) {
screen = pDraw->pScreen->myNum;
if (pGlxScreen->swapBarrierFuncs) {
int ret = pGlxScreen->swapBarrierFuncs->bindSwapBarrierFunc(screen, drawable, barrier);
if (ret == Success) {
if (barrier)
/* add source for cleanup when drawable is gone */
AddResource(drawable, __glXSwapBarrierRes, (pointer)screen);
else
/* delete source */
FreeResourceByType(drawable, __glXSwapBarrierRes, FALSE);
}
return ret;
}
}
client->errorValue = drawable;
return __glXError(GLXBadDrawable);
}
int __glXDisp_QueryMaxSwapBarriersSGIX(__GLXclientState *cl, GLbyte *pc)
{
ClientPtr client = cl->client;
xGLXQueryMaxSwapBarriersSGIXReq *req =
(xGLXQueryMaxSwapBarriersSGIXReq *) pc;
xGLXQueryMaxSwapBarriersSGIXReply reply;
int screen = req->screen;
__GLXscreen *pGlxScreen;
pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
if (pGlxScreen->swapBarrierFuncs)
reply.max = pGlxScreen->swapBarrierFuncs->queryMaxSwapBarriersFunc(screen);
else
reply.max = 0;
reply.length = 0;
reply.type = X_Reply;
reply.sequenceNumber = client->sequence;
if (client->swapped) {
__GLX_DECLARE_SWAP_VARIABLES;
__GLX_SWAP_SHORT(&reply.sequenceNumber);
}
WriteToClient(client, sz_xGLXQueryMaxSwapBarriersSGIXReply,
(char *) &reply);
return Success;
}
#define GLX_BAD_HYPERPIPE_SGIX 92
int __glXDisp_QueryHyperpipeNetworkSGIX(__GLXclientState *cl, GLbyte *pc)
{
ClientPtr client = cl->client;
xGLXQueryHyperpipeNetworkSGIXReq * req = (xGLXQueryHyperpipeNetworkSGIXReq *) pc;
xGLXQueryHyperpipeNetworkSGIXReply reply;
int screen = req->screen;
void *rdata = NULL;
int length=0;
int npipes=0;
int n= 0;
__GLXscreen *pGlxScreen;
pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
if (pGlxScreen->hyperpipeFuncs) {
rdata =
(pGlxScreen->hyperpipeFuncs->queryHyperpipeNetworkFunc(screen, &npipes, &n));
}
length = __GLX_PAD(n) >> 2;
reply.type = X_Reply;
reply.sequenceNumber = client->sequence;
reply.length = length;
reply.n = n;
reply.npipes = npipes;
if (client->swapped) {
__GLX_DECLARE_SWAP_VARIABLES;
__GLX_SWAP_SHORT(&reply.sequenceNumber);
__GLX_SWAP_INT(&reply.length);
__GLX_SWAP_INT(&reply.n);
__GLX_SWAP_INT(&reply.npipes);
}
WriteToClient(client, sz_xGLXQueryHyperpipeNetworkSGIXReply,
(char *) &reply);
WriteToClient(client, length << 2, (char *)rdata);
return Success;
}
int __glXDisp_DestroyHyperpipeConfigSGIX (__GLXclientState *cl, GLbyte *pc)
{
ClientPtr client = cl->client;
xGLXDestroyHyperpipeConfigSGIXReq * req =
(xGLXDestroyHyperpipeConfigSGIXReq *) pc;
xGLXDestroyHyperpipeConfigSGIXReply reply;
int screen = req->screen;
int success = GLX_BAD_HYPERPIPE_SGIX;
int hpId ;
__GLXscreen *pGlxScreen;
hpId = req->hpId;
pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
if (pGlxScreen->hyperpipeFuncs) {
success = pGlxScreen->hyperpipeFuncs->destroyHyperpipeConfigFunc(screen, hpId);
}
reply.type = X_Reply;
reply.sequenceNumber = client->sequence;
reply.length = __GLX_PAD(0) >> 2;
reply.n = 0;
reply.success = success;
if (client->swapped) {
__GLX_DECLARE_SWAP_VARIABLES;
__GLX_SWAP_SHORT(&reply.sequenceNumber);
}
WriteToClient(client,
sz_xGLXDestroyHyperpipeConfigSGIXReply,
(char *) &reply);
return Success;
}
int __glXDisp_QueryHyperpipeConfigSGIX(__GLXclientState *cl, GLbyte *pc)
{
ClientPtr client = cl->client;
xGLXQueryHyperpipeConfigSGIXReq * req =
(xGLXQueryHyperpipeConfigSGIXReq *) pc;
xGLXQueryHyperpipeConfigSGIXReply reply;
int screen = req->screen;
void *rdata = NULL;
int length;
int npipes=0;
int n= 0;
int hpId;
__GLXscreen *pGlxScreen;
hpId = req->hpId;
pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
if (pGlxScreen->hyperpipeFuncs) {
rdata = pGlxScreen->hyperpipeFuncs->queryHyperpipeConfigFunc(screen, hpId,&npipes, &n);
}
length = __GLX_PAD(n) >> 2;
reply.type = X_Reply;
reply.sequenceNumber = client->sequence;
reply.length = length;
reply.n = n;
reply.npipes = npipes;
if (client->swapped) {
__GLX_DECLARE_SWAP_VARIABLES;
__GLX_SWAP_SHORT(&reply.sequenceNumber);
__GLX_SWAP_INT(&reply.length);
__GLX_SWAP_INT(&reply.n);
__GLX_SWAP_INT(&reply.npipes);
}
WriteToClient(client, sz_xGLXQueryHyperpipeConfigSGIXReply,
(char *) &reply);
WriteToClient(client, length << 2, (char *)rdata);
return Success;
}
int __glXDisp_HyperpipeConfigSGIX(__GLXclientState *cl, GLbyte *pc)
{
ClientPtr client = cl->client;
xGLXHyperpipeConfigSGIXReq * req =
(xGLXHyperpipeConfigSGIXReq *) pc;
xGLXHyperpipeConfigSGIXReply reply;
int screen = req->screen;
void *rdata;
int npipes=0, networkId;
int hpId=-1;
__GLXscreen *pGlxScreen;
pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
networkId = (int)req->networkId;
npipes = (int)req->npipes;
rdata = (void *)(req +1);
if (pGlxScreen->hyperpipeFuncs) {
pGlxScreen->hyperpipeFuncs->hyperpipeConfigFunc(screen,networkId,
&hpId, &npipes,
(void *) rdata);
}
reply.type = X_Reply;
reply.sequenceNumber = client->sequence;
reply.length = __GLX_PAD(0) >> 2;
reply.n = 0;
reply.npipes = npipes;
reply.hpId = hpId;
if (client->swapped) {
__GLX_DECLARE_SWAP_VARIABLES;
__GLX_SWAP_SHORT(&reply.sequenceNumber);
__GLX_SWAP_INT(&reply.npipes);
__GLX_SWAP_INT(&reply.hpId);
}
WriteToClient(client, sz_xGLXHyperpipeConfigSGIXReply,
(char *) &reply);
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)
{
xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;
GLint vendorcode = req->vendorCode;
__GLXdispatchVendorPrivProcPtr proc;
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)
{
xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;
GLint vendorcode = req->vendorCode;
__GLXdispatchVendorPrivProcPtr proc;
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;
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 *) xalloc(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);
}
xfree(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;
if (!validGlxScreen(client, req->screen, &pGlxScreen, &err))
return err;
switch(req->name) {
case GLX_VENDOR:
ptr = pGlxScreen->GLXvendor;
break;
case GLX_VERSION:
ptr = pGlxScreen->GLXversion;
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 *) xalloc(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);
}
xfree(buf);
return Success;
}
int __glXDisp_ClientInfo(__GLXclientState *cl, GLbyte *pc)
{
xGLXClientInfoReq *req = (xGLXClientInfoReq *) pc;
const char *buf;
cl->GLClientmajorVersion = req->major;
cl->GLClientminorVersion = req->minor;
if (cl->GLClientextensions)
xfree(cl->GLClientextensions);
buf = (const char *)(req+1);
cl->GLClientextensions = xstrdup(buf);
return Success;
}
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