/**
* Create a non-pbuffer GLX drawable.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static GLXDrawable
CreateDrawable( Display *dpy, const __GLcontextModes * fbconfig,
Drawable drawable, const int *attrib_list,
CARD8 glxCode )
{
xGLXCreateWindowReq * req;
CARD32 * data;
unsigned int i;
for ( i = 0 ; attrib_list[i * 2] != None ; i++ )
/* empty */ ;
LockDisplay(dpy);
GetReqExtra( GLXCreateWindow, 20 + (8 * i), req );
data = (CARD32 *) (req + 1);
req->reqType = __glXSetupForCommand(dpy);
req->glxCode = glxCode;
req->screen = (CARD32) fbconfig->screen;
req->fbconfig = fbconfig->fbconfigID;
req->window = (GLXPbuffer) drawable;
req->numAttribs = (CARD32) i;
UnlockDisplay(dpy);
SyncHandle();
return drawable;
}
static int
indirect_bind_context(struct glx_context *gc, struct glx_context *old,
GLXDrawable draw, GLXDrawable read)
{
GLXContextTag tag;
__GLXattribute *state;
Display *dpy = gc->psc->dpy;
int opcode = __glXSetupForCommand(dpy);
Bool sent;
if (old != &dummyContext && !old->isDirect && old->psc->dpy == dpy) {
tag = old->currentContextTag;
old->currentContextTag = 0;
} else {
tag = 0;
}
sent = SendMakeCurrentRequest(dpy, opcode, gc->xid, tag, draw, read,
&gc->currentContextTag);
if (!IndirectAPI)
IndirectAPI = __glXNewIndirectAPI();
_glapi_set_dispatch(IndirectAPI);
state = gc->client_state_private;
if (state->array_state == NULL) {
glGetString(GL_EXTENSIONS);
glGetString(GL_VERSION);
__glXInitVertexArrayState(gc);
}
return !sent;
}
/**
* Destroy a non-pbuffer GLX drawable.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static void
DestroyDrawable( Display * dpy, GLXDrawable drawable, CARD32 glxCode )
{
xGLXDestroyPbufferReq * req;
CARD8 opcode;
if ( (dpy == NULL) || (drawable == 0) ) {
return;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return;
LockDisplay(dpy);
GetReqExtra( GLXDestroyPbuffer, 4, req );
req->reqType = opcode;
req->glxCode = glxCode;
req->pbuffer = (GLXPbuffer) drawable;
UnlockDisplay(dpy);
SyncHandle();
return;
}
/**
* Change a drawable's attribute.
*
* This function is used to implement \c glXSelectEvent and
* \c glXSelectEventSGIX.
*
* \note
* This function dynamically determines whether to use the SGIX_pbuffer
* version of the protocol or the GLX 1.3 version of the protocol.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static void
ChangeDrawableAttribute( Display * dpy, GLXDrawable drawable,
const CARD32 * attribs, size_t num_attribs )
{
__GLXdisplayPrivate *priv = __glXInitialize(dpy);
CARD32 * output;
if ( (dpy == NULL) || (drawable == 0) ) {
return;
}
LockDisplay(dpy);
if ( (priv->majorVersion > 1) || (priv->minorVersion >= 3) ) {
xGLXChangeDrawableAttributesReq *req;
GetReqExtra( GLXChangeDrawableAttributes, 8 + (8 * num_attribs), req );
output = (CARD32 *) (req + 1);
req->reqType = __glXSetupForCommand(dpy);
req->glxCode = X_GLXChangeDrawableAttributes;
req->drawable = drawable;
req->numAttribs = (CARD32) num_attribs;
}
else {
xGLXVendorPrivateWithReplyReq *vpreq;
GetReqExtra( GLXVendorPrivateWithReply, 4 + (8 * num_attribs), vpreq );
output = (CARD32 *) (vpreq + 1);
vpreq->reqType = __glXSetupForCommand(dpy);
vpreq->glxCode = X_GLXVendorPrivateWithReply;
vpreq->vendorCode = X_GLXvop_ChangeDrawableAttributesSGIX;
output[0] = (CARD32) drawable;
output++;
}
(void) memcpy( output, attribs, sizeof( CARD32 ) * 2 * num_attribs );
UnlockDisplay(dpy);
SyncHandle();
return;
}
/**
* Create a non-pbuffer GLX drawable.
*/
static GLXDrawable
CreateDrawable(Display *dpy, struct glx_config *config,
Drawable drawable, const int *attrib_list, CARD8 glxCode)
{
xGLXCreateWindowReq *req;
struct glx_drawable *glxDraw;
CARD32 *data;
unsigned int i;
CARD8 opcode;
GLXDrawable xid;
i = 0;
if (attrib_list) {
while (attrib_list[i * 2] != None)
i++;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return None;
glxDraw = malloc(sizeof(*glxDraw));
if (!glxDraw)
return None;
LockDisplay(dpy);
GetReqExtra(GLXCreateWindow, 8 * i, req);
data = (CARD32 *) (req + 1);
req->reqType = opcode;
req->glxCode = glxCode;
req->screen = config->screen;
req->fbconfig = config->fbconfigID;
req->window = drawable;
req->glxwindow = xid = XAllocID(dpy);
req->numAttribs = i;
if (attrib_list)
memcpy(data, attrib_list, 8 * i);
UnlockDisplay(dpy);
SyncHandle();
if (InitGLXDrawable(dpy, glxDraw, drawable, xid)) {
free(glxDraw);
return None;
}
if (!CreateDRIDrawable(dpy, config, drawable, xid, attrib_list, i)) {
if (glxCode == X_GLXCreatePixmap)
glxCode = X_GLXDestroyPixmap;
else
glxCode = X_GLXDestroyWindow;
protocolDestroyDrawable(dpy, xid, glxCode);
xid = None;
}
return xid;
}
/**
* Destroy a pbuffer.
*
* This function is used to implement \c glXDestroyPbuffer and
* \c glXDestroyGLXPbufferSGIX.
*
* \note
* This function dynamically determines whether to use the SGIX_pbuffer
* version of the protocol or the GLX 1.3 version of the protocol.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static void
DestroyPbuffer( Display * dpy, GLXDrawable drawable )
{
__GLXdisplayPrivate *priv = __glXInitialize(dpy);
if ( (dpy == NULL) || (drawable == 0) ) {
return;
}
LockDisplay(dpy);
if ( (priv->majorVersion > 1) || (priv->minorVersion >= 3) ) {
xGLXDestroyPbufferReq * req;
GetReqExtra( GLXDestroyPbuffer, 4, req );
req->reqType = __glXSetupForCommand(dpy);
req->glxCode = X_GLXDestroyPbuffer;
req->pbuffer = (GLXPbuffer) drawable;
}
else {
xGLXVendorPrivateWithReplyReq *vpreq;
CARD32 * data;
GetReqExtra( GLXVendorPrivateWithReply, 4, vpreq );
data = (CARD32 *) (vpreq + 1);
data[0] = (CARD32) drawable;
vpreq->reqType = __glXSetupForCommand(dpy);
vpreq->glxCode = X_GLXVendorPrivateWithReply;
vpreq->vendorCode = X_GLXvop_DestroyGLXPbufferSGIX;
}
UnlockDisplay(dpy);
SyncHandle();
return;
}
static void
__glXGenerateError(Display * dpy, XID resource,
BYTE errorCode, CARD16 minorCode)
{
xError error;
error.errorCode = errorCode;
error.resourceID = resource;
error.sequenceNumber = dpy->request;
error.type = X_Error;
error.majorCode = __glXSetupForCommand(dpy);
error.minorCode = minorCode;
_XError(dpy, &error);
}
static void
protocolDestroyDrawable(Display *dpy, GLXDrawable drawable, CARD32 glxCode)
{
xGLXDestroyPbufferReq *req;
CARD8 opcode;
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return;
LockDisplay(dpy);
GetReq(GLXDestroyPbuffer, req);
req->reqType = opcode;
req->glxCode = glxCode;
req->pbuffer = (GLXPbuffer) drawable;
UnlockDisplay(dpy);
SyncHandle();
}
/**
* Destroy a non-pbuffer GLX drawable.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static void
DestroyDrawable(Display * dpy, GLXDrawable drawable, CARD32 glxCode)
{
xGLXDestroyPbufferReq *req;
CARD8 opcode;
if ((dpy == NULL) || (drawable == 0)) {
return;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return;
LockDisplay(dpy);
GetReqExtra(GLXDestroyPbuffer, 4, req);
req->reqType = opcode;
req->glxCode = glxCode;
req->pbuffer = (GLXPbuffer) drawable;
UnlockDisplay(dpy);
SyncHandle();
#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
{
int screen;
__GLXdisplayPrivate *const priv = __glXInitialize(dpy);
__GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
__GLXscreenConfigs *psc = &priv->screenConfigs[screen];
if (pdraw != NULL) {
(*pdraw->destroyDrawable) (pdraw);
__glxHashDelete(psc->drawHash, drawable);
}
}
#endif
return;
}
/**
* Create a non-pbuffer GLX drawable.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static GLXDrawable
CreateDrawable( Display *dpy, const __GLcontextModes * fbconfig,
Drawable drawable, const int *attrib_list,
CARD8 glxCode )
{
xGLXCreateWindowReq * req;
CARD32 * data;
unsigned int i;
CARD8 opcode;
i = 0;
if (attrib_list) {
while (attrib_list[i * 2] != None)
i++;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return None;
LockDisplay(dpy);
GetReqExtra( GLXCreateWindow, 8 * i, req );
data = (CARD32 *) (req + 1);
req->reqType = opcode;
req->glxCode = glxCode;
req->screen = (CARD32) fbconfig->screen;
req->fbconfig = fbconfig->fbconfigID;
req->window = (GLXPbuffer) drawable;
req->glxwindow = (GLXWindow) XAllocID(dpy);
req->numAttribs = (CARD32) i;
memcpy( data, attrib_list, 8 * i );
UnlockDisplay(dpy);
SyncHandle();
return (GLXDrawable)req->glxwindow;
}
/**
* Create a non-pbuffer GLX drawable.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static GLXDrawable
CreateDrawable(Display * dpy, const __GLcontextModes * fbconfig,
Drawable drawable, const int *attrib_list, CARD8 glxCode)
{
xGLXCreateWindowReq *req;
CARD32 *data;
unsigned int i;
CARD8 opcode;
i = 0;
if (attrib_list) {
while (attrib_list[i * 2] != None)
i++;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return None;
LockDisplay(dpy);
GetReqExtra(GLXCreateWindow, 8 * i, req);
data = (CARD32 *) (req + 1);
req->reqType = opcode;
req->glxCode = glxCode;
req->screen = (CARD32) fbconfig->screen;
req->fbconfig = fbconfig->fbconfigID;
req->window = (CARD32) drawable;
req->glxwindow = (GLXWindow) XAllocID(dpy);
req->numAttribs = (CARD32) i;
if (attrib_list)
memcpy(data, attrib_list, 8 * i);
UnlockDisplay(dpy);
SyncHandle();
#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
do {
/* FIXME: Maybe delay __DRIdrawable creation until the drawable
* is actually bound to a context... */
__GLXdisplayPrivate *const priv = __glXInitialize(dpy);
__GLXDRIdrawable *pdraw;
__GLXscreenConfigs *psc;
psc = &priv->screenConfigs[fbconfig->screen];
if (psc->driScreen == NULL)
break;
pdraw = psc->driScreen->createDrawable(psc, drawable,
req->glxwindow, fbconfig);
if (pdraw == NULL) {
fprintf(stderr, "failed to create drawable\n");
break;
}
if (__glxHashInsert(psc->drawHash, req->glxwindow, pdraw)) {
(*pdraw->destroyDrawable) (pdraw);
return None; /* FIXME: Check what we're supposed to do here... */
}
pdraw->textureTarget = determineTextureTarget(attrib_list, i);
pdraw->textureFormat = determineTextureFormat(attrib_list, i);
} while (0);
#endif
return (GLXDrawable) req->glxwindow;
}
state = gc->client_state_private;
if (state->array_state == NULL) {
glGetString(GL_EXTENSIONS);
glGetString(GL_VERSION);
__glXInitVertexArrayState(gc);
}
return !sent;
}
static void
indirect_unbind_context(struct glx_context *gc, struct glx_context *new)
{
Display *dpy = gc->psc->dpy;
int opcode = __glXSetupForCommand(dpy);
if (gc == new)
return;
/* We are either switching to no context, away from a indirect
* context to a direct context or from one dpy to another and have
* to send a request to the dpy to unbind the previous context.
*/
if (!new || new->isDirect || new->psc->dpy != dpy) {
SendMakeCurrentRequest(dpy, opcode, None,
gc->currentContextTag, None, None, NULL);
gc->currentContextTag = 0;
}
}
/**
* Get a drawable's attribute.
*
* This function is used to implement \c glXGetSelectedEvent and
* \c glXGetSelectedEventSGIX.
*
* \note
* This function dynamically determines whether to use the SGIX_pbuffer
* version of the protocol or the GLX 1.3 version of the protocol.
*
* \todo
* The number of attributes returned is likely to be small, probably less than
* 10. Given that, this routine should try to use an array on the stack to
* capture the reply rather than always calling Xmalloc.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static int
GetDrawableAttribute(Display * dpy, GLXDrawable drawable,
int attribute, unsigned int *value)
{
__GLXdisplayPrivate *priv;
xGLXGetDrawableAttributesReply reply;
CARD32 *data;
CARD8 opcode;
unsigned int length;
unsigned int i;
unsigned int num_attributes;
GLboolean use_glx_1_3;
if ((dpy == NULL) || (drawable == 0)) {
return 0;
}
priv = __glXInitialize(dpy);
use_glx_1_3 = ((priv->majorVersion > 1) || (priv->minorVersion >= 3));
*value = 0;
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return 0;
LockDisplay(dpy);
if (use_glx_1_3) {
xGLXGetDrawableAttributesReq *req;
GetReqExtra(GLXGetDrawableAttributes, 4, req);
req->reqType = opcode;
req->glxCode = X_GLXGetDrawableAttributes;
req->drawable = drawable;
}
else {
xGLXVendorPrivateWithReplyReq *vpreq;
GetReqExtra(GLXVendorPrivateWithReply, 4, vpreq);
data = (CARD32 *) (vpreq + 1);
data[0] = (CARD32) drawable;
vpreq->reqType = opcode;
vpreq->glxCode = X_GLXVendorPrivateWithReply;
vpreq->vendorCode = X_GLXvop_GetDrawableAttributesSGIX;
}
_XReply(dpy, (xReply *) & reply, 0, False);
if (reply.type == X_Error) {
UnlockDisplay(dpy);
SyncHandle();
return 0;
}
length = reply.length;
if (length) {
num_attributes = (use_glx_1_3) ? reply.numAttribs : length / 2;
data = (CARD32 *) Xmalloc(length * sizeof(CARD32));
if (data == NULL) {
/* Throw data on the floor */
_XEatData(dpy, length);
}
else {
_XRead(dpy, (char *) data, length * sizeof(CARD32));
/* Search the set of returned attributes for the attribute requested by
* the caller.
*/
for (i = 0; i < num_attributes; i++) {
if (data[i * 2] == attribute) {
*value = data[(i * 2) + 1];
break;
}
}
#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
{
__GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL);
if (pdraw != NULL && !pdraw->textureTarget)
pdraw->textureTarget =
determineTextureTarget((const int *) data, num_attributes);
if (pdraw != NULL && !pdraw->textureFormat)
pdraw->textureFormat =
determineTextureFormat((const int *) data, num_attributes);
}
#endif
Xfree(data);
}
}
UnlockDisplay(dpy);
SyncHandle();
return 0;
}
/**
* Make a particular context current.
*
* \note This is in this file so that it can access dummyContext.
*/
static Bool
MakeContextCurrent(Display * dpy, GLXDrawable draw,
GLXDrawable read, GLXContext gc)
{
const GLXContext oldGC = __glXGetCurrentContext();
#ifdef GLX_USE_APPLEGL
bool error = apple_glx_make_current_context(dpy,
(oldGC && oldGC != &dummyContext) ? oldGC->apple : NULL,
gc ? gc->apple : NULL, draw);
apple_glx_diagnostic("%s: error %s\n", __func__, error ? "YES" : "NO");
if(error)
return GL_FALSE;
#else
xGLXMakeCurrentReply reply;
const CARD8 opcode = __glXSetupForCommand(dpy);
const CARD8 oldOpcode = ((gc == oldGC) || (oldGC == &dummyContext))
? opcode : __glXSetupForCommand(oldGC->currentDpy);
Bool bindReturnValue;
__GLXattribute *state;
if (!opcode || !oldOpcode) {
return GL_FALSE;
}
/* Make sure that the new context has a nonzero ID. In the request,
* a zero context ID is used only to mean that we bind to no current
* context.
*/
if ((gc != NULL) && (gc->xid == None)) {
return GL_FALSE;
}
if (gc == NULL && (draw != None || read != None)) {
__glXGenerateError(dpy, gc, (draw != None) ? draw : read,
BadMatch, X_GLXMakeContextCurrent);
return False;
}
if (gc != NULL && (draw == None || read == None)) {
__glXGenerateError(dpy, gc, None, BadMatch, X_GLXMakeContextCurrent);
return False;
}
_glapi_check_multithread();
if (gc != NULL && gc->thread_id != 0 && gc->thread_id != _glthread_GetID()) {
__glXGenerateError(dpy, gc, gc->xid,
BadAccess, X_GLXMakeContextCurrent);
return False;
}
#ifdef GLX_DIRECT_RENDERING
/* Bind the direct rendering context to the drawable */
if (gc && gc->driContext) {
__GLXDRIdrawable *pdraw = FetchDRIDrawable(dpy, draw, gc);
__GLXDRIdrawable *pread = FetchDRIDrawable(dpy, read, gc);
if ((pdraw == NULL) || (pread == NULL)) {
__glXGenerateError(dpy, gc, (pdraw == NULL) ? draw : read,
GLXBadDrawable, X_GLXMakeContextCurrent);
return False;
}
bindReturnValue =
(gc->driContext->bindContext) (gc->driContext, pdraw, pread);
}
else if (!gc && oldGC && oldGC->driContext) {
bindReturnValue = True;
}
else
#endif
{
/* Send a glXMakeCurrent request to bind the new context. */
bindReturnValue =
SendMakeCurrentRequest(dpy, opcode, gc ? gc->xid : None,
((dpy != oldGC->currentDpy)
|| oldGC->isDirect)
? None : oldGC->currentContextTag, draw, read,
&reply);
}
if (!bindReturnValue) {
return False;
}
#ifdef GLX_DIRECT_RENDERING
if ((dpy != oldGC->currentDpy || (gc && gc->driContext)) &&
!oldGC->isDirect && oldGC != &dummyContext) {
#else
if ((dpy != oldGC->currentDpy) && oldGC != &dummyContext) {
#endif
xGLXMakeCurrentReply dummy_reply;
/* We are either switching from one dpy to another and have to
* send a request to the previous dpy to unbind the previous
* context, or we are switching away from a indirect context to
* a direct context and have to send a request to the dpy to
* unbind the previous context.
*/
(void) SendMakeCurrentRequest(oldGC->currentDpy, oldOpcode, None,
oldGC->currentContextTag, None, None,
&dummy_reply);
}
#ifdef GLX_DIRECT_RENDERING
else if (oldGC->driContext && oldGC != gc) {
oldGC->driContext->unbindContext(oldGC->driContext);
}
#endif
#endif /* GLX_USE_APPLEGL */
/* Update our notion of what is current */
__glXLock();
if (gc == oldGC) {
/* Even though the contexts are the same the drawable might have
* changed. Note that gc cannot be the dummy, and that oldGC
* cannot be NULL, therefore if they are the same, gc is not
* NULL and not the dummy.
*/
if(gc) {
gc->currentDrawable = draw;
gc->currentReadable = read;
}
}
else {
if (oldGC != &dummyContext) {
/* Old current context is no longer current to anybody */
oldGC->currentDpy = 0;
oldGC->currentDrawable = None;
oldGC->currentReadable = None;
oldGC->currentContextTag = 0;
oldGC->thread_id = 0;
#ifdef GLX_USE_APPLEGL
/*
* At this point we should check if the context has been
* through glXDestroyContext, and redestroy it if so.
*/
if(oldGC->do_destroy) {
__glXUnlock();
/* glXDestroyContext uses the same global lock. */
glXDestroyContext(dpy, oldGC);
__glXLock();
#else
if (oldGC->xid == None) {
/* We are switching away from a context that was
* previously destroyed, so we need to free the memory
* for the old handle.
*/
#ifdef GLX_DIRECT_RENDERING
/* Destroy the old direct rendering context */
if (oldGC->driContext) {
oldGC->driContext->destroyContext(oldGC->driContext,
oldGC->psc,
oldGC->createDpy);
oldGC->driContext = NULL;
}
#endif
__glXFreeContext(oldGC);
#endif /* GLX_USE_APPLEGL */
}
}
if (gc) {
__glXSetCurrentContext(gc);
gc->currentDpy = dpy;
gc->currentDrawable = draw;
gc->currentReadable = read;
#ifndef GLX_USE_APPLEGL
gc->thread_id = _glthread_GetID();
#ifdef GLX_DIRECT_RENDERING
if (!gc->driContext) {
#endif
if (!IndirectAPI)
IndirectAPI = __glXNewIndirectAPI();
_glapi_set_dispatch(IndirectAPI);
#ifdef GLX_USE_APPLEGL
do {
extern void XAppleDRIUseIndirectDispatch(void);
XAppleDRIUseIndirectDispatch();
} while (0);
#endif
state = (__GLXattribute *) (gc->client_state_private);
gc->currentContextTag = reply.contextTag;
if (state->array_state == NULL) {
(void) glGetString(GL_EXTENSIONS);
(void) glGetString(GL_VERSION);
__glXInitVertexArrayState(gc);
}
#ifdef GLX_DIRECT_RENDERING
}
else {
gc->currentContextTag = -1;
}
#endif
#endif /* GLX_USE_APPLEGL */
}
else {
__glXSetCurrentContextNull();
}
}
__glXUnlock();
return GL_TRUE;
}
PUBLIC Bool
glXMakeCurrent(Display * dpy, GLXDrawable draw, GLXContext gc)
{
return MakeContextCurrent(dpy, draw, draw, gc);
}
PUBLIC
GLX_ALIAS(Bool, glXMakeCurrentReadSGI,
(Display * dpy, GLXDrawable d, GLXDrawable r, GLXContext ctx),
(dpy, d, r, ctx), MakeContextCurrent)
PUBLIC
GLX_ALIAS(Bool, glXMakeContextCurrent,
(Display * dpy, GLXDrawable d, GLXDrawable r,
GLXContext ctx), (dpy, d, r, ctx), MakeContextCurrent)
/**
* Create a pbuffer.
*
* This function is used to implement \c glXCreatePbuffer and
* \c glXCreateGLXPbufferSGIX.
*
* \note
* This function dynamically determines whether to use the SGIX_pbuffer
* version of the protocol or the GLX 1.3 version of the protocol.
*/
static GLXDrawable
CreatePbuffer(Display * dpy, struct glx_config *config,
unsigned int width, unsigned int height,
const int *attrib_list, GLboolean size_in_attribs)
{
struct glx_display *priv = __glXInitialize(dpy);
GLXDrawable id = 0;
CARD32 *data;
CARD8 opcode;
unsigned int i;
Pixmap pixmap;
GLboolean glx_1_3 = GL_FALSE;
i = 0;
if (attrib_list) {
while (attrib_list[i * 2])
i++;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return None;
LockDisplay(dpy);
id = XAllocID(dpy);
if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
xGLXCreatePbufferReq *req;
unsigned int extra = (size_in_attribs) ? 0 : 2;
glx_1_3 = GL_TRUE;
GetReqExtra(GLXCreatePbuffer, (8 * (i + extra)), req);
data = (CARD32 *) (req + 1);
req->reqType = opcode;
req->glxCode = X_GLXCreatePbuffer;
req->screen = config->screen;
req->fbconfig = config->fbconfigID;
req->pbuffer = id;
req->numAttribs = i + extra;
if (!size_in_attribs) {
data[(2 * i) + 0] = GLX_PBUFFER_WIDTH;
data[(2 * i) + 1] = width;
data[(2 * i) + 2] = GLX_PBUFFER_HEIGHT;
data[(2 * i) + 3] = height;
data += 4;
}
}
else {
xGLXVendorPrivateReq *vpreq;
GetReqExtra(GLXVendorPrivate, 20 + (8 * i), vpreq);
data = (CARD32 *) (vpreq + 1);
vpreq->reqType = opcode;
vpreq->glxCode = X_GLXVendorPrivate;
vpreq->vendorCode = X_GLXvop_CreateGLXPbufferSGIX;
data[0] = config->screen;
data[1] = config->fbconfigID;
data[2] = id;
data[3] = width;
data[4] = height;
data += 5;
}
(void) memcpy(data, attrib_list, sizeof(CARD32) * 2 * i);
UnlockDisplay(dpy);
SyncHandle();
pixmap = XCreatePixmap(dpy, RootWindow(dpy, config->screen),
width, height, config->rgbBits);
if (!CreateDRIDrawable(dpy, config, pixmap, id, attrib_list, i)) {
CARD32 o = glx_1_3 ? X_GLXDestroyPbuffer : X_GLXvop_DestroyGLXPbufferSGIX;
XFreePixmap(dpy, pixmap);
protocolDestroyDrawable(dpy, id, o);
id = None;
}
return id;
}
/**
* Get a drawable's attribute.
*
* This function is used to implement \c glXGetSelectedEvent and
* \c glXGetSelectedEventSGIX.
*
* \note
* This function dynamically determines whether to use the SGIX_pbuffer
* version of the protocol or the GLX 1.3 version of the protocol.
*
* \todo
* The number of attributes returned is likely to be small, probably less than
* 10. Given that, this routine should try to use an array on the stack to
* capture the reply rather than always calling Xmalloc.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static int
GetDrawableAttribute( Display *dpy, GLXDrawable drawable,
int attribute, unsigned int *value )
{
__GLXdisplayPrivate *priv = __glXInitialize(dpy);
xGLXGetDrawableAttributesReply reply;
CARD32 * data;
unsigned int length;
unsigned int i;
unsigned int num_attributes;
GLboolean use_glx_1_3 = ((priv->majorVersion > 1)
|| (priv->minorVersion >= 3));
if ( (dpy == NULL) || (drawable == 0) ) {
return 0;
}
LockDisplay(dpy);
if ( use_glx_1_3 ) {
xGLXGetDrawableAttributesReq *req;
GetReqExtra( GLXGetDrawableAttributes, 4, req );
req->reqType = __glXSetupForCommand(dpy);
req->glxCode = X_GLXGetDrawableAttributes;
req->drawable = drawable;
}
else {
xGLXVendorPrivateWithReplyReq *vpreq;
GetReqExtra( GLXVendorPrivateWithReply, 4, vpreq );
data = (CARD32 *) (vpreq + 1);
data[0] = (CARD32) drawable;
vpreq->reqType = __glXSetupForCommand(dpy);
vpreq->glxCode = X_GLXVendorPrivateWithReply;
vpreq->vendorCode = X_GLXvop_GetDrawableAttributesSGIX;
}
_XReply(dpy, (xReply*) &reply, 0, False);
length = reply.length;
num_attributes = (use_glx_1_3) ? reply.numAttribs : length / 2;
data = (CARD32 *) Xmalloc( length * sizeof(CARD32) );
if ( data == NULL ) {
/* Throw data on the floor */
_XEatData(dpy, length);
} else {
_XRead(dpy, (char *)data, length * sizeof(CARD32) );
}
UnlockDisplay(dpy);
SyncHandle();
/* Search the set of returned attributes for the attribute requested by
* the caller.
*/
for ( i = 0 ; i < num_attributes ; i++ ) {
if ( data[i*2] == attribute ) {
*value = data[ (i*2) + 1 ];
break;
}
}
Xfree( data );
return 0;
}
/**
* Change a drawable's attribute.
*
* This function is used to implement \c glXSelectEvent and
* \c glXSelectEventSGIX.
*
* \note
* This function dynamically determines whether to use the SGIX_pbuffer
* version of the protocol or the GLX 1.3 version of the protocol.
*/
static void
ChangeDrawableAttribute(Display * dpy, GLXDrawable drawable,
const CARD32 * attribs, size_t num_attribs)
{
struct glx_display *priv = __glXInitialize(dpy);
#ifdef GLX_DIRECT_RENDERING
__GLXDRIdrawable *pdraw;
#endif
CARD32 *output;
CARD8 opcode;
int i;
if ((dpy == NULL) || (drawable == 0)) {
return;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return;
LockDisplay(dpy);
if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
xGLXChangeDrawableAttributesReq *req;
GetReqExtra(GLXChangeDrawableAttributes, 8 * num_attribs, req);
output = (CARD32 *) (req + 1);
req->reqType = opcode;
req->glxCode = X_GLXChangeDrawableAttributes;
req->drawable = drawable;
req->numAttribs = (CARD32) num_attribs;
}
else {
xGLXVendorPrivateWithReplyReq *vpreq;
GetReqExtra(GLXVendorPrivateWithReply, 8 + (8 * num_attribs), vpreq);
output = (CARD32 *) (vpreq + 1);
vpreq->reqType = opcode;
vpreq->glxCode = X_GLXVendorPrivateWithReply;
vpreq->vendorCode = X_GLXvop_ChangeDrawableAttributesSGIX;
output[0] = (CARD32) drawable;
output[1] = num_attribs;
output += 2;
}
(void) memcpy(output, attribs, sizeof(CARD32) * 2 * num_attribs);
UnlockDisplay(dpy);
SyncHandle();
#ifdef GLX_DIRECT_RENDERING
pdraw = GetGLXDRIDrawable(dpy, drawable);
if (!pdraw)
return;
for (i = 0; i < num_attribs; i++) {
switch(attribs[i * 2]) {
case GLX_EVENT_MASK:
/* Keep a local copy for masking out DRI2 proto events as needed */
pdraw->eventMask = attribs[i * 2 + 1];
break;
}
}
#endif
return;
}
static Bool
SendMakeCurrentRequest(Display * dpy, GLXContextID gc_id,
GLXContextTag gc_tag, GLXDrawable draw,
GLXDrawable read, GLXContextTag *out_tag)
{
xGLXMakeCurrentReply reply;
Bool ret;
int opcode = __glXSetupForCommand(dpy);
LockDisplay(dpy);
if (draw == read) {
xGLXMakeCurrentReq *req;
GetReq(GLXMakeCurrent, req);
req->reqType = opcode;
req->glxCode = X_GLXMakeCurrent;
req->drawable = draw;
req->context = gc_id;
req->oldContextTag = gc_tag;
}
else {
struct glx_display *priv = __glXInitialize(dpy);
/* If the server can support the GLX 1.3 version, we should
* perfer that. Not only that, some servers support GLX 1.3 but
* not the SGI extension.
*/
if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
xGLXMakeContextCurrentReq *req;
GetReq(GLXMakeContextCurrent, req);
req->reqType = opcode;
req->glxCode = X_GLXMakeContextCurrent;
req->drawable = draw;
req->readdrawable = read;
req->context = gc_id;
req->oldContextTag = gc_tag;
}
else {
xGLXVendorPrivateWithReplyReq *vpreq;
xGLXMakeCurrentReadSGIReq *req;
GetReqExtra(GLXVendorPrivateWithReply,
sz_xGLXMakeCurrentReadSGIReq -
sz_xGLXVendorPrivateWithReplyReq, vpreq);
req = (xGLXMakeCurrentReadSGIReq *) vpreq;
req->reqType = opcode;
req->glxCode = X_GLXVendorPrivateWithReply;
req->vendorCode = X_GLXvop_MakeCurrentReadSGI;
req->drawable = draw;
req->readable = read;
req->context = gc_id;
req->oldContextTag = gc_tag;
}
}
ret = _XReply(dpy, (xReply *) &reply, 0, False);
if (out_tag)
*out_tag = reply.contextTag;
UnlockDisplay(dpy);
SyncHandle();
return ret;
}
/**
* Create a pbuffer.
*
* This function is used to implement \c glXCreatePbuffer and
* \c glXCreateGLXPbufferSGIX.
*
* \note
* This function dynamically determines whether to use the SGIX_pbuffer
* version of the protocol or the GLX 1.3 version of the protocol.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static GLXDrawable
CreatePbuffer(Display * dpy, const __GLcontextModes * fbconfig,
unsigned int width, unsigned int height,
const int *attrib_list, GLboolean size_in_attribs)
{
__GLXdisplayPrivate *priv = __glXInitialize(dpy);
GLXDrawable id = 0;
CARD32 *data;
CARD8 opcode;
unsigned int i;
i = 0;
if (attrib_list) {
while (attrib_list[i * 2])
i++;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return None;
LockDisplay(dpy);
id = XAllocID(dpy);
if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
xGLXCreatePbufferReq *req;
unsigned int extra = (size_in_attribs) ? 0 : 2;
GetReqExtra(GLXCreatePbuffer, (8 * (i + extra)), req);
data = (CARD32 *) (req + 1);
req->reqType = opcode;
req->glxCode = X_GLXCreatePbuffer;
req->screen = (CARD32) fbconfig->screen;
req->fbconfig = fbconfig->fbconfigID;
req->pbuffer = (GLXPbuffer) id;
req->numAttribs = (CARD32) (i + extra);
if (!size_in_attribs) {
data[(2 * i) + 0] = GLX_PBUFFER_WIDTH;
data[(2 * i) + 1] = width;
data[(2 * i) + 2] = GLX_PBUFFER_HEIGHT;
data[(2 * i) + 3] = height;
data += 4;
}
}
else {
xGLXVendorPrivateReq *vpreq;
GetReqExtra(GLXVendorPrivate, 20 + (8 * i), vpreq);
data = (CARD32 *) (vpreq + 1);
vpreq->reqType = opcode;
vpreq->glxCode = X_GLXVendorPrivate;
vpreq->vendorCode = X_GLXvop_CreateGLXPbufferSGIX;
data[0] = (CARD32) fbconfig->screen;
data[1] = (CARD32) fbconfig->fbconfigID;
data[2] = (CARD32) id;
data[3] = (CARD32) width;
data[4] = (CARD32) height;
data += 5;
}
(void) memcpy(data, attrib_list, sizeof(CARD32) * 2 * i);
UnlockDisplay(dpy);
SyncHandle();
return id;
}
/**
* Get a drawable's attribute.
*
* This function is used to implement \c glXGetSelectedEvent and
* \c glXGetSelectedEventSGIX.
*
* \note
* This function dynamically determines whether to use the SGIX_pbuffer
* version of the protocol or the GLX 1.3 version of the protocol.
*
* \todo
* The number of attributes returned is likely to be small, probably less than
* 10. Given that, this routine should try to use an array on the stack to
* capture the reply rather than always calling Xmalloc.
*/
static int
GetDrawableAttribute(Display * dpy, GLXDrawable drawable,
int attribute, unsigned int *value)
{
struct glx_display *priv;
xGLXGetDrawableAttributesReply reply;
CARD32 *data;
CARD8 opcode;
unsigned int length;
unsigned int i;
unsigned int num_attributes;
GLboolean use_glx_1_3;
#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
__GLXDRIdrawable *pdraw;
#endif
if (dpy == NULL)
return 0;
/* Page 38 (page 52 of the PDF) of glxencode1.3.pdf says:
*
* "If drawable is not a valid GLX drawable, a GLXBadDrawable error is
* generated."
*/
if (drawable == 0) {
__glXSendError(dpy, GLXBadDrawable, 0, X_GLXGetDrawableAttributes, false);
return 0;
}
priv = __glXInitialize(dpy);
if (priv == NULL)
return 0;
use_glx_1_3 = ((priv->majorVersion > 1) || (priv->minorVersion >= 3));
*value = 0;
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return 0;
#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
pdraw = GetGLXDRIDrawable(dpy, drawable);
if (attribute == GLX_BACK_BUFFER_AGE_EXT) {
struct glx_context *gc = __glXGetCurrentContext();
struct glx_screen *psc;
/* The GLX_EXT_buffer_age spec says:
*
* "If querying GLX_BACK_BUFFER_AGE_EXT and <draw> is not bound to
* the calling thread's current context a GLXBadDrawable error is
* generated."
*/
if (pdraw == NULL || gc == &dummyContext || gc->currentDpy != dpy ||
(gc->currentDrawable != drawable &&
gc->currentReadable != drawable)) {
__glXSendError(dpy, GLXBadDrawable, drawable,
X_GLXGetDrawableAttributes, false);
return 0;
}
psc = pdraw->psc;
if (psc->driScreen->getBufferAge != NULL)
*value = psc->driScreen->getBufferAge(pdraw);
return 0;
}
#endif
LockDisplay(dpy);
if (use_glx_1_3) {
xGLXGetDrawableAttributesReq *req;
GetReq(GLXGetDrawableAttributes, req);
req->reqType = opcode;
req->glxCode = X_GLXGetDrawableAttributes;
req->drawable = drawable;
}
else {
xGLXVendorPrivateWithReplyReq *vpreq;
GetReqExtra(GLXVendorPrivateWithReply, 4, vpreq);
data = (CARD32 *) (vpreq + 1);
data[0] = (CARD32) drawable;
vpreq->reqType = opcode;
vpreq->glxCode = X_GLXVendorPrivateWithReply;
vpreq->vendorCode = X_GLXvop_GetDrawableAttributesSGIX;
}
_XReply(dpy, (xReply *) & reply, 0, False);
if (reply.type == X_Error) {
UnlockDisplay(dpy);
SyncHandle();
return 0;
}
length = reply.length;
if (length) {
num_attributes = (use_glx_1_3) ? reply.numAttribs : length / 2;
data = malloc(length * sizeof(CARD32));
if (data == NULL) {
/* Throw data on the floor */
_XEatData(dpy, length);
}
else {
_XRead(dpy, (char *) data, length * sizeof(CARD32));
/* Search the set of returned attributes for the attribute requested by
* the caller.
*/
for (i = 0; i < num_attributes; i++) {
if (data[i * 2] == attribute) {
*value = data[(i * 2) + 1];
break;
}
}
#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
if (pdraw != NULL) {
if (!pdraw->textureTarget)
pdraw->textureTarget =
determineTextureTarget((const int *) data, num_attributes);
if (!pdraw->textureFormat)
pdraw->textureFormat =
determineTextureFormat((const int *) data, num_attributes);
}
#endif
free(data);
}
}
UnlockDisplay(dpy);
SyncHandle();
return 0;
}