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+/* $XFree86: xc/lib/GL/glx/glxcmds.c,v 1.30 2004/01/30 20:33:06 alanh Exp $ */
+/*
+** 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.
+**
+*/
+
+/**
+ * \file glxcmds.c
+ * Client-side GLX interface.
+ */
+
+#include <inttypes.h>
+#include "glxclient.h"
+#include <X11/extensions/extutil.h>
+#include <X11/extensions/Xext.h>
+#include <assert.h>
+#include <string.h>
+#include "glapi.h"
+#ifdef GLX_DIRECT_RENDERING
+#include "indirect_init.h"
+#include <X11/extensions/xf86vmode.h>
+#include "xf86dri.h"
+#endif
+#include "glxextensions.h"
+#include "glcontextmodes.h"
+#include "glheader.h"
+#include <sys/time.h>
+
+static const char __glXGLXClientVendorName[] = "SGI";
+static const char __glXGLXClientVersion[] = "1.4";
+
+
+/****************************************************************************/
+/**
+ * Get the __DRIdrawable for the drawable associated with a GLXContext
+ *
+ * \param dpy The display associated with \c drawable.
+ * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved.
+ * \returns A pointer to the context's __DRIdrawable on success, or NULL if
+ * the drawable is not associated with a direct-rendering context.
+ */
+
+#ifdef GLX_DIRECT_RENDERING
+static __DRIdrawable *
+GetDRIDrawable( Display *dpy, GLXDrawable drawable, int * const scrn_num )
+{
+ __GLXdisplayPrivate * const priv = __glXInitialize(dpy);
+
+ if ( (priv != NULL) && (priv->driDisplay.private != NULL) ) {
+ const unsigned screen_count = ScreenCount(dpy);
+ unsigned i;
+
+ for ( i = 0 ; i < screen_count ; i++ ) {
+ __DRIscreen * const psc = &priv->screenConfigs[i].driScreen;
+ __DRIdrawable * const pdraw = (psc->private != NULL)
+ ? (*psc->getDrawable)(dpy, drawable, psc->private) : NULL;
+
+ if ( pdraw != NULL ) {
+ if ( scrn_num != NULL ) {
+ *scrn_num = i;
+ }
+ return pdraw;
+ }
+ }
+ }
+
+ return NULL;
+}
+#endif
+
+
+/**
+ * Get the GLX per-screen data structure associated with a GLX context.
+ *
+ * \param dpy Display for which the GLX per-screen information is to be
+ * retrieved.
+ * \param scrn Screen on \c dpy for which the GLX per-screen information is
+ * to be retrieved.
+ * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn
+ * specify a valid GLX screen, or NULL otherwise.
+ *
+ * \todo Should this function validate that \c scrn is within the screen
+ * number range for \c dpy?
+ */
+
+static __GLXscreenConfigs *
+GetGLXScreenConfigs(Display *dpy, int scrn)
+{
+ __GLXdisplayPrivate * const priv = __glXInitialize(dpy);
+
+ return (priv->screenConfigs != NULL) ? &priv->screenConfigs[scrn] : NULL;
+}
+
+
+static int
+GetGLXPrivScreenConfig( Display *dpy, int scrn, __GLXdisplayPrivate ** ppriv,
+ __GLXscreenConfigs ** ppsc )
+{
+ /* Initialize the extension, if needed . This has the added value
+ * of initializing/allocating the display private
+ */
+
+ if ( dpy == NULL ) {
+ return GLX_NO_EXTENSION;
+ }
+
+ *ppriv = __glXInitialize(dpy);
+ if ( *ppriv == NULL ) {
+ return GLX_NO_EXTENSION;
+ }
+
+ /* Check screen number to see if its valid */
+ if ((scrn < 0) || (scrn >= ScreenCount(dpy))) {
+ return GLX_BAD_SCREEN;
+ }
+
+ /* Check to see if the GL is supported on this screen */
+ *ppsc = &((*ppriv)->screenConfigs[scrn]);
+ if ( (*ppsc)->configs == NULL ) {
+ /* No support for GL on this screen regardless of visual */
+ return GLX_BAD_VISUAL;
+ }
+
+ return Success;
+}
+
+
+/**
+ * Determine if a \c GLXFBConfig supplied by the application is valid.
+ *
+ * \param dpy Application supplied \c Display pointer.
+ * \param config Application supplied \c GLXFBConfig.
+ *
+ * \returns If the \c GLXFBConfig is valid, the a pointer to the matching
+ * \c __GLcontextModes structure is returned. Otherwise, \c NULL
+ * is returned.
+ */
+static __GLcontextModes *
+ValidateGLXFBConfig( Display * dpy, GLXFBConfig config )
+{
+ __GLXdisplayPrivate * const priv = __glXInitialize(dpy);
+ const unsigned num_screens = ScreenCount(dpy);
+ unsigned i;
+ const __GLcontextModes * modes;
+
+
+ if ( priv != NULL ) {
+ for ( i = 0 ; i < num_screens ; i++ ) {
+ for ( modes = priv->screenConfigs[i].configs
+ ; modes != NULL
+ ; modes = modes->next ) {
+ if ( modes == (__GLcontextModes *) config ) {
+ return (__GLcontextModes *) config;
+ }
+ }
+ }
+ }
+
+ return NULL;
+}
+
+
+/**
+ * \todo It should be possible to move the allocate of \c client_state_private
+ * later in the function for direct-rendering contexts. Direct-rendering
+ * contexts don't need to track client state, so they don't need that memory
+ * at all.
+ *
+ * \todo Eliminate \c __glXInitVertexArrayState. Replace it with a new
+ * function called \c __glXAllocateClientState that allocates the memory and
+ * does all the initialization (including the pixel pack / unpack).
+ */
+static
+GLXContext AllocateGLXContext( Display *dpy )
+{
+ GLXContext gc;
+ int bufSize;
+ CARD8 opcode;
+ __GLXattribute *state;
+
+ if (!dpy)
+ return NULL;
+
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode) {
+ return NULL;
+ }
+
+ /* Allocate our context record */
+ gc = (GLXContext) Xmalloc(sizeof(struct __GLXcontextRec));
+ if (!gc) {
+ /* Out of memory */
+ return NULL;
+ }
+ memset(gc, 0, sizeof(struct __GLXcontextRec));
+
+ state = Xmalloc(sizeof(struct __GLXattributeRec));
+ if (state == NULL) {
+ /* Out of memory */
+ Xfree(gc);
+ return NULL;
+ }
+ gc->client_state_private = state;
+ memset(gc->client_state_private, 0, sizeof(struct __GLXattributeRec));
+ state->NoDrawArraysProtocol = (getenv("LIBGL_NO_DRAWARRAYS") != NULL);
+
+ /*
+ ** Create a temporary buffer to hold GLX rendering commands. The size
+ ** of the buffer is selected so that the maximum number of GLX rendering
+ ** commands can fit in a single X packet and still have room in the X
+ ** packet for the GLXRenderReq header.
+ */
+
+ bufSize = (XMaxRequestSize(dpy) * 4) - sz_xGLXRenderReq;
+ gc->buf = (GLubyte *) Xmalloc(bufSize);
+ if (!gc->buf) {
+ Xfree(gc->client_state_private);
+ Xfree(gc);
+ return NULL;
+ }
+ gc->bufSize = bufSize;
+
+ /* Fill in the new context */
+ gc->renderMode = GL_RENDER;
+
+ state->storePack.alignment = 4;
+ state->storeUnpack.alignment = 4;
+
+ gc->attributes.stackPointer = &gc->attributes.stack[0];
+
+ /*
+ ** PERFORMANCE NOTE: A mode dependent fill image can speed things up.
+ ** Other code uses the fastImageUnpack bit, but it is never set
+ ** to GL_TRUE.
+ */
+ gc->fastImageUnpack = GL_FALSE;
+ gc->fillImage = __glFillImage;
+ gc->isDirect = GL_FALSE;
+ gc->pc = gc->buf;
+ gc->bufEnd = gc->buf + bufSize;
+ if (__glXDebug) {
+ /*
+ ** Set limit register so that there will be one command per packet
+ */
+ gc->limit = gc->buf;
+ } else {
+ gc->limit = gc->buf + bufSize - __GLX_BUFFER_LIMIT_SIZE;
+ }
+ gc->createDpy = dpy;
+ gc->majorOpcode = opcode;
+
+ /*
+ ** Constrain the maximum drawing command size allowed to be
+ ** transfered using the X_GLXRender protocol request. First
+ ** constrain by a software limit, then constrain by the protocl
+ ** limit.
+ */
+ if (bufSize > __GLX_RENDER_CMD_SIZE_LIMIT) {
+ bufSize = __GLX_RENDER_CMD_SIZE_LIMIT;
+ }
+ if (bufSize > __GLX_MAX_RENDER_CMD_SIZE) {
+ bufSize = __GLX_MAX_RENDER_CMD_SIZE;
+ }
+ gc->maxSmallRenderCommandSize = bufSize;
+ return gc;
+}
+
+
+/**
+ * Create a new context. Exactly one of \c vis and \c fbconfig should be
+ * non-NULL.
+ *
+ * \param use_glx_1_3 For FBConfigs, should GLX 1.3 protocol or
+ * SGIX_fbconfig protocol be used?
+ * \param renderType For FBConfigs, what is the rendering type?
+ */
+
+static GLXContext
+CreateContext(Display *dpy, XVisualInfo *vis,
+ const __GLcontextModes * const fbconfig,
+ GLXContext shareList,
+ Bool allowDirect, GLXContextID contextID,
+ Bool use_glx_1_3, int renderType)
+{
+ GLXContext gc;
+
+ if ( dpy == NULL )
+ return NULL;
+
+ gc = AllocateGLXContext(dpy);
+ if (!gc)
+ return NULL;
+
+ if (None == contextID) {
+ if ( (vis == NULL) && (fbconfig == NULL) )
+ return NULL;
+
+#ifdef GLX_DIRECT_RENDERING
+ if (allowDirect) {
+ int screen = (fbconfig == NULL) ? vis->screen : fbconfig->screen;
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);
+ const __GLcontextModes * mode;
+
+ /* The value of fbconfig cannot change because it is tested
+ * later in the function.
+ */
+ if ( fbconfig == NULL ) {
+ /* FIXME: Is it possible for the __GLcontextModes structure
+ * FIXME: to not be found?
+ */
+ mode = _gl_context_modes_find_visual( psc->configs,
+ vis->visualid );
+ assert( mode != NULL );
+ assert( mode->screen == screen );
+ }
+ else {
+ mode = fbconfig;
+ }
+
+ if (psc && psc->driScreen.private) {
+ void * const shared = (shareList != NULL)
+ ? shareList->driContext.private : NULL;
+ gc->driContext.private =
+ (*psc->driScreen.createNewContext)( dpy, mode, renderType,
+ shared,
+ &gc->driContext );
+ if (gc->driContext.private) {
+ gc->isDirect = GL_TRUE;
+ gc->screen = mode->screen;
+ gc->vid = mode->visualID;
+ gc->fbconfigID = mode->fbconfigID;
+ gc->driContext.mode = mode;
+ }
+ }
+ }
+#endif
+
+ LockDisplay(dpy);
+ if ( fbconfig == NULL ) {
+ xGLXCreateContextReq *req;
+
+ /* Send the glXCreateContext request */
+ GetReq(GLXCreateContext,req);
+ req->reqType = gc->majorOpcode;
+ req->glxCode = X_GLXCreateContext;
+ req->context = gc->xid = XAllocID(dpy);
+ req->visual = vis->visualid;
+ req->screen = vis->screen;
+ req->shareList = shareList ? shareList->xid : None;
+ req->isDirect = gc->isDirect;
+ }
+ else if ( use_glx_1_3 ) {
+ xGLXCreateNewContextReq *req;
+
+ /* Send the glXCreateNewContext request */
+ GetReq(GLXCreateNewContext,req);
+ req->reqType = gc->majorOpcode;
+ req->glxCode = X_GLXCreateNewContext;
+ req->context = gc->xid = XAllocID(dpy);
+ req->fbconfig = fbconfig->fbconfigID;
+ req->screen = fbconfig->screen;
+ req->renderType = renderType;
+ req->shareList = shareList ? shareList->xid : None;
+ req->isDirect = gc->isDirect;
+ }
+ else {
+ xGLXVendorPrivateWithReplyReq *vpreq;
+ xGLXCreateContextWithConfigSGIXReq *req;
+
+ /* Send the glXCreateNewContext request */
+ GetReqExtra(GLXVendorPrivateWithReply,
+ sz_xGLXCreateContextWithConfigSGIXReq-sz_xGLXVendorPrivateWithReplyReq,vpreq);
+ req = (xGLXCreateContextWithConfigSGIXReq *)vpreq;
+ req->reqType = gc->majorOpcode;
+ req->glxCode = X_GLXVendorPrivateWithReply;
+ req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX;
+ req->context = gc->xid = XAllocID(dpy);
+ req->fbconfig = fbconfig->fbconfigID;
+ req->screen = fbconfig->screen;
+ req->renderType = renderType;
+ req->shareList = shareList ? shareList->xid : None;
+ req->isDirect = gc->isDirect;
+ }
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+ gc->imported = GL_FALSE;
+ }
+ else {
+ gc->xid = contextID;
+ gc->imported = GL_TRUE;
+ }
+
+ return gc;
+}
+
+PUBLIC GLXContext glXCreateContext(Display *dpy, XVisualInfo *vis,
+ GLXContext shareList, Bool allowDirect)
+{
+ return CreateContext(dpy, vis, NULL, shareList, allowDirect, None,
+ False, 0);
+}
+
+void __glXFreeContext(__GLXcontext *gc)
+{
+ if (gc->vendor) XFree((char *) gc->vendor);
+ if (gc->renderer) XFree((char *) gc->renderer);
+ if (gc->version) XFree((char *) gc->version);
+ if (gc->extensions) XFree((char *) gc->extensions);
+ __glFreeAttributeState(gc);
+ XFree((char *) gc->buf);
+ Xfree((char *) gc->client_state_private);
+ XFree((char *) gc);
+
+}
+
+/*
+** Destroy the named context
+*/
+static void
+DestroyContext(Display *dpy, GLXContext gc)
+{
+ xGLXDestroyContextReq *req;
+ GLXContextID xid;
+ CARD8 opcode;
+ GLboolean imported;
+
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode || !gc) {
+ return;
+ }
+
+ __glXLock();
+ xid = gc->xid;
+ imported = gc->imported;
+ gc->xid = None;
+
+#ifdef GLX_DIRECT_RENDERING
+ /* Destroy the direct rendering context */
+ if (gc->isDirect) {
+ if (gc->driContext.private) {
+ (*gc->driContext.destroyContext)(dpy, gc->screen,
+ gc->driContext.private);
+ gc->driContext.private = NULL;
+ }
+ }
+#endif
+
+ if (gc->currentDpy) {
+ /* Have to free later cuz it's in use now */
+ __glXUnlock();
+ } else {
+ /* Destroy the handle if not current to anybody */
+ __glXUnlock();
+ __glXFreeContext(gc);
+ }
+
+ if (!imported) {
+ /*
+ ** This dpy also created the server side part of the context.
+ ** Send the glXDestroyContext request.
+ */
+ LockDisplay(dpy);
+ GetReq(GLXDestroyContext,req);
+ req->reqType = opcode;
+ req->glxCode = X_GLXDestroyContext;
+ req->context = xid;
+ UnlockDisplay(dpy);
+ SyncHandle();
+ }
+}
+
+PUBLIC void glXDestroyContext(Display *dpy, GLXContext gc)
+{
+ DestroyContext(dpy, gc);
+}
+
+/*
+** Return the major and minor version #s for the GLX extension
+*/
+PUBLIC Bool glXQueryVersion(Display *dpy, int *major, int *minor)
+{
+ __GLXdisplayPrivate *priv;
+
+ /* Init the extension. This fetches the major and minor version. */
+ priv = __glXInitialize(dpy);
+ if (!priv) return GL_FALSE;
+
+ if (major) *major = priv->majorVersion;
+ if (minor) *minor = priv->minorVersion;
+ return GL_TRUE;
+}
+
+/*
+** Query the existance of the GLX extension
+*/
+PUBLIC Bool glXQueryExtension(Display *dpy, int *errorBase, int *eventBase)
+{
+ int major_op, erb, evb;
+ Bool rv;
+
+ rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb);
+ if (rv) {
+ if (errorBase) *errorBase = erb;
+ if (eventBase) *eventBase = evb;
+ }
+ return rv;
+}
+
+/*
+** Put a barrier in the token stream that forces the GL to finish its
+** work before X can proceed.
+*/
+PUBLIC void glXWaitGL(void)
+{
+ xGLXWaitGLReq *req;
+ GLXContext gc = __glXGetCurrentContext();
+ Display *dpy = gc->currentDpy;
+
+ if (!dpy) return;
+
+ /* Flush any pending commands out */
+ __glXFlushRenderBuffer(gc, gc->pc);
+
+#ifdef GLX_DIRECT_RENDERING
+ if (gc->isDirect) {
+/* This bit of ugliness unwraps the glFinish function */
+#ifdef glFinish
+#undef glFinish
+#endif
+ glFinish();
+ return;
+ }
+#endif
+
+ /* Send the glXWaitGL request */
+ LockDisplay(dpy);
+ GetReq(GLXWaitGL,req);
+ req->reqType = gc->majorOpcode;
+ req->glxCode = X_GLXWaitGL;
+ req->contextTag = gc->currentContextTag;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+/*
+** Put a barrier in the token stream that forces X to finish its
+** work before GL can proceed.
+*/
+PUBLIC void glXWaitX(void)
+{
+ xGLXWaitXReq *req;
+ GLXContext gc = __glXGetCurrentContext();
+ Display *dpy = gc->currentDpy;
+
+ if (!dpy) return;
+
+ /* Flush any pending commands out */
+ __glXFlushRenderBuffer(gc, gc->pc);
+
+#ifdef GLX_DIRECT_RENDERING
+ if (gc->isDirect) {
+ XSync(dpy, False);
+ return;
+ }
+#endif
+
+ /*
+ ** Send the glXWaitX request.
+ */
+ LockDisplay(dpy);
+ GetReq(GLXWaitX,req);
+ req->reqType = gc->majorOpcode;
+ req->glxCode = X_GLXWaitX;
+ req->contextTag = gc->currentContextTag;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+PUBLIC void glXUseXFont(Font font, int first, int count, int listBase)
+{
+ xGLXUseXFontReq *req;
+ GLXContext gc = __glXGetCurrentContext();
+ Display *dpy = gc->currentDpy;
+
+ if (!dpy) return;
+
+ /* Flush any pending commands out */
+ (void) __glXFlushRenderBuffer(gc, gc->pc);
+
+#ifdef GLX_DIRECT_RENDERING
+ if (gc->isDirect) {
+ DRI_glXUseXFont(font, first, count, listBase);
+ return;
+ }
+#endif
+
+ /* Send the glXUseFont request */
+ LockDisplay(dpy);
+ GetReq(GLXUseXFont,req);
+ req->reqType = gc->majorOpcode;
+ req->glxCode = X_GLXUseXFont;
+ req->contextTag = gc->currentContextTag;
+ req->font = font;
+ req->first = first;
+ req->count = count;
+ req->listBase = listBase;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+/************************************************************************/
+
+/*
+** Copy the source context to the destination context using the
+** attribute "mask".
+*/
+PUBLIC void glXCopyContext(Display *dpy, GLXContext source,
+ GLXContext dest, unsigned long mask)
+{
+ xGLXCopyContextReq *req;
+ GLXContext gc = __glXGetCurrentContext();
+ GLXContextTag tag;
+ CARD8 opcode;
+
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode) {
+ return;
+ }
+
+#ifdef GLX_DIRECT_RENDERING
+ if (gc->isDirect) {
+ /* NOT_DONE: This does not work yet */
+ }
+#endif
+
+ /*
+ ** If the source is the current context, send its tag so that the context
+ ** can be flushed before the copy.
+ */
+ if (source == gc && dpy == gc->currentDpy) {
+ tag = gc->currentContextTag;
+ } else {
+ tag = 0;
+ }
+
+ /* Send the glXCopyContext request */
+ LockDisplay(dpy);
+ GetReq(GLXCopyContext,req);
+ req->reqType = opcode;
+ req->glxCode = X_GLXCopyContext;
+ req->source = source ? source->xid : None;
+ req->dest = dest ? dest->xid : None;
+ req->mask = mask;
+ req->contextTag = tag;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+
+/**
+ * Determine if a context uses direct rendering.
+ *
+ * \param dpy Display where the context was created.
+ * \param contextID ID of the context to be tested.
+ *
+ * \returns \c GL_TRUE if the context is direct rendering or not.
+ */
+static Bool __glXIsDirect(Display *dpy, GLXContextID contextID)
+{
+ xGLXIsDirectReq *req;
+ xGLXIsDirectReply reply;
+ CARD8 opcode;
+
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode) {
+ return GL_FALSE;
+ }
+
+ /* Send the glXIsDirect request */
+ LockDisplay(dpy);
+ GetReq(GLXIsDirect,req);
+ req->reqType = opcode;
+ req->glxCode = X_GLXIsDirect;
+ req->context = contextID;
+ _XReply(dpy, (xReply*) &reply, 0, False);
+ UnlockDisplay(dpy);
+ SyncHandle();
+
+ return reply.isDirect;
+}
+
+/**
+ * \todo
+ * Shouldn't this function \b always return \c GL_FALSE when
+ * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with
+ * the GLX protocol here at all?
+ */
+PUBLIC Bool glXIsDirect(Display *dpy, GLXContext gc)
+{
+ if (!gc) {
+ return GL_FALSE;
+#ifdef GLX_DIRECT_RENDERING
+ } else if (gc->isDirect) {
+ return GL_TRUE;
+#endif
+ }
+ return __glXIsDirect(dpy, gc->xid);
+}
+
+PUBLIC GLXPixmap glXCreateGLXPixmap(Display *dpy, XVisualInfo *vis,
+ Pixmap pixmap)
+{
+ xGLXCreateGLXPixmapReq *req;
+ GLXPixmap xid;
+ CARD8 opcode;
+
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode) {
+ return None;
+ }
+
+ /* Send the glXCreateGLXPixmap request */
+ LockDisplay(dpy);
+ GetReq(GLXCreateGLXPixmap,req);
+ req->reqType = opcode;
+ req->glxCode = X_GLXCreateGLXPixmap;
+ req->screen = vis->screen;
+ req->visual = vis->visualid;
+ req->pixmap = pixmap;
+ req->glxpixmap = xid = XAllocID(dpy);
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return xid;
+}
+
+/*
+** Destroy the named pixmap
+*/
+PUBLIC void glXDestroyGLXPixmap(Display *dpy, GLXPixmap glxpixmap)
+{
+ xGLXDestroyGLXPixmapReq *req;
+ CARD8 opcode;
+
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode) {
+ return;
+ }
+
+ /* Send the glXDestroyGLXPixmap request */
+ LockDisplay(dpy);
+ GetReq(GLXDestroyGLXPixmap,req);
+ req->reqType = opcode;
+ req->glxCode = X_GLXDestroyGLXPixmap;
+ req->glxpixmap = glxpixmap;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+PUBLIC void glXSwapBuffers(Display *dpy, GLXDrawable drawable)
+{
+ xGLXSwapBuffersReq *req;
+ GLXContext gc;
+ GLXContextTag tag;
+ CARD8 opcode;
+#ifdef GLX_DIRECT_RENDERING
+ __DRIdrawable *pdraw = GetDRIDrawable( dpy, drawable, NULL );
+
+ if ( pdraw != NULL ) {
+ (*pdraw->swapBuffers)(dpy, pdraw->private);
+ return;
+ }
+#endif
+
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode) {
+ return;
+ }
+
+ /*
+ ** The calling thread may or may not have a current context. If it
+ ** does, send the context tag so the server can do a flush.
+ */
+ gc = __glXGetCurrentContext();
+ if ((gc != NULL) && (dpy == gc->currentDpy) &&
+ ((drawable == gc->currentDrawable) || (drawable == gc->currentReadable)) ) {
+ tag = gc->currentContextTag;
+ } else {
+ tag = 0;
+ }
+
+ /* Send the glXSwapBuffers request */
+ LockDisplay(dpy);
+ GetReq(GLXSwapBuffers,req);
+ req->reqType = opcode;
+ req->glxCode = X_GLXSwapBuffers;
+ req->drawable = drawable;
+ req->contextTag = tag;
+ UnlockDisplay(dpy);
+ SyncHandle();
+ XFlush(dpy);
+}
+
+
+/*
+** Return configuration information for the given display, screen and
+** visual combination.
+*/
+PUBLIC int glXGetConfig(Display *dpy, XVisualInfo *vis, int attribute,
+ int *value_return)
+{
+ __GLXdisplayPrivate *priv;
+ __GLXscreenConfigs *psc;
+ int status;
+
+ status = GetGLXPrivScreenConfig( dpy, vis->screen, & priv, & psc );
+ if ( status == Success ) {
+ const __GLcontextModes * const modes = _gl_context_modes_find_visual(
+ psc->configs, vis->visualid );
+
+ /* Lookup attribute after first finding a match on the visual */
+ if ( modes != NULL ) {
+ return _gl_get_context_mode_data( modes, attribute, value_return );
+ }
+
+ status = GLX_BAD_VISUAL;
+ }
+
+ /*
+ ** If we can't find the config for this visual, this visual is not
+ ** supported by the OpenGL implementation on the server.
+ */
+ if ( (status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL) ) {
+ *value_return = GL_FALSE;
+ status = Success;
+ }
+
+ return status;
+}
+
+/************************************************************************/
+
+static void
+init_fbconfig_for_chooser( __GLcontextModes * config,
+ GLboolean fbconfig_style_tags )
+{
+ memset( config, 0, sizeof( __GLcontextModes ) );
+ config->visualID = (XID) GLX_DONT_CARE;
+ config->visualType = GLX_DONT_CARE;
+
+ /* glXChooseFBConfig specifies different defaults for these two than
+ * glXChooseVisual.
+ */
+ if ( fbconfig_style_tags ) {
+ config->rgbMode = GL_TRUE;
+ config->doubleBufferMode = GLX_DONT_CARE;
+ }
+
+ config->visualRating = GLX_DONT_CARE;
+ config->transparentPixel = GLX_NONE;
+ config->transparentRed = GLX_DONT_CARE;
+ config->transparentGreen = GLX_DONT_CARE;
+ config->transparentBlue = GLX_DONT_CARE;
+ config->transparentAlpha = GLX_DONT_CARE;
+ config->transparentIndex = GLX_DONT_CARE;
+
+ config->drawableType = GLX_WINDOW_BIT;
+ config->renderType = (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
+ config->xRenderable = GLX_DONT_CARE;
+ config->fbconfigID = (GLXFBConfigID)(GLX_DONT_CARE);
+
+ config->swapMethod = GLX_DONT_CARE;
+}
+
+#define MATCH_DONT_CARE( param ) \
+ do { \
+ if ( (a-> param != GLX_DONT_CARE) \
+ && (a-> param != b-> param) ) { \
+ return False; \
+ } \
+ } while ( 0 )
+
+#define MATCH_MINIMUM( param ) \
+ do { \
+ if ( (a-> param != GLX_DONT_CARE) \
+ && (a-> param > b-> param) ) { \
+ return False; \
+ } \
+ } while ( 0 )
+
+#define MATCH_EXACT( param ) \
+ do { \
+ if ( a-> param != b-> param) { \
+ return False; \
+ } \
+ } while ( 0 )
+
+/**
+ * Determine if two GLXFBConfigs are compatible.
+ *
+ * \param a Application specified config to test.
+ * \param b Server specified config to test against \c a.
+ */
+static Bool
+fbconfigs_compatible( const __GLcontextModes * const a,
+ const __GLcontextModes * const b )
+{
+ MATCH_DONT_CARE( doubleBufferMode );
+ MATCH_DONT_CARE( visualType );
+ MATCH_DONT_CARE( visualRating );
+ MATCH_DONT_CARE( xRenderable );
+ MATCH_DONT_CARE( fbconfigID );
+ MATCH_DONT_CARE( swapMethod );
+
+ MATCH_MINIMUM( rgbBits );
+ MATCH_MINIMUM( numAuxBuffers );
+ MATCH_MINIMUM( redBits );
+ MATCH_MINIMUM( greenBits );
+ MATCH_MINIMUM( blueBits );
+ MATCH_MINIMUM( alphaBits );
+ MATCH_MINIMUM( depthBits );
+ MATCH_MINIMUM( stencilBits );
+ MATCH_MINIMUM( accumRedBits );
+ MATCH_MINIMUM( accumGreenBits );
+ MATCH_MINIMUM( accumBlueBits );
+ MATCH_MINIMUM( accumAlphaBits );
+ MATCH_MINIMUM( sampleBuffers );
+ MATCH_MINIMUM( maxPbufferWidth );
+ MATCH_MINIMUM( maxPbufferHeight );
+ MATCH_MINIMUM( maxPbufferPixels );
+ MATCH_MINIMUM( samples );
+
+ MATCH_DONT_CARE( stereoMode );
+ MATCH_EXACT( level );
+
+ if ( ((a->drawableType & b->drawableType) == 0)
+ || ((a->renderType & b->renderType) == 0) ) {
+ return False;
+ }
+
+
+ /* There is a bug in a few of the XFree86 DDX drivers. They contain
+ * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
+ * Technically speaking, it is a bug in the DDX driver, but there is
+ * enough of an installed base to work around the problem here. In any
+ * case, 0 is not a valid value of the transparent type, so we'll treat 0
+ * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
+ * 0 from the server to be a match to maintain backward compatibility with
+ * the (broken) drivers.
+ */
+
+ if ( a->transparentPixel != GLX_DONT_CARE
+ && a->transparentPixel != 0 ) {
+ if ( a->transparentPixel == GLX_NONE ) {
+ if ( b->transparentPixel != GLX_NONE && b->transparentPixel != 0 )
+ return False;
+ } else {
+ MATCH_EXACT( transparentPixel );
+ }
+
+ switch ( a->transparentPixel ) {
+ case GLX_TRANSPARENT_RGB:
+ MATCH_DONT_CARE( transparentRed );
+ MATCH_DONT_CARE( transparentGreen );
+ MATCH_DONT_CARE( transparentBlue );
+ MATCH_DONT_CARE( transparentAlpha );
+ break;
+
+ case GLX_TRANSPARENT_INDEX:
+ MATCH_DONT_CARE( transparentIndex );
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ return True;
+}
+
+
+/* There's some trickly language in the GLX spec about how this is supposed
+ * to work. Basically, if a given component size is either not specified
+ * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
+ * Well, that's really hard to do with the code as-is. This behavior is
+ * closer to correct, but still not technically right.
+ */
+#define PREFER_LARGER_OR_ZERO(comp) \
+ do { \
+ if ( ((*a)-> comp) != ((*b)-> comp) ) { \
+ if ( ((*a)-> comp) == 0 ) { \
+ return -1; \
+ } \
+ else if ( ((*b)-> comp) == 0 ) { \
+ return 1; \
+ } \
+ else { \
+ return ((*b)-> comp) - ((*a)-> comp) ; \
+ } \
+ } \
+ } while( 0 )
+
+#define PREFER_LARGER(comp) \
+ do { \
+ if ( ((*a)-> comp) != ((*b)-> comp) ) { \
+ return ((*b)-> comp) - ((*a)-> comp) ; \
+ } \
+ } while( 0 )
+
+#define PREFER_SMALLER(comp) \
+ do { \
+ if ( ((*a)-> comp) != ((*b)-> comp) ) { \
+ return ((*a)-> comp) - ((*b)-> comp) ; \
+ } \
+ } while( 0 )
+
+/**
+ * Compare two GLXFBConfigs. This function is intended to be used as the
+ * compare function passed in to qsort.
+ *
+ * \returns If \c a is a "better" config, according to the specification of
+ * SGIX_fbconfig, a number less than zero is returned. If \c b is
+ * better, then a number greater than zero is return. If both are
+ * equal, zero is returned.
+ * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
+ */
+static int
+fbconfig_compare( const __GLcontextModes * const * const a,
+ const __GLcontextModes * const * const b )
+{
+ /* The order of these comparisons must NOT change. It is defined by
+ * the GLX 1.3 spec and ARB_multisample.
+ */
+
+ PREFER_SMALLER( visualSelectGroup );
+
+ /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
+ * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
+ * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
+ */
+ PREFER_SMALLER( visualRating );
+
+ /* This isn't quite right. It is supposed to compare the sum of the
+ * components the user specifically set minimums for.
+ */
+ PREFER_LARGER_OR_ZERO( redBits );
+ PREFER_LARGER_OR_ZERO( greenBits );
+ PREFER_LARGER_OR_ZERO( blueBits );
+ PREFER_LARGER_OR_ZERO( alphaBits );
+
+ PREFER_SMALLER( rgbBits );
+
+ if ( ((*a)->doubleBufferMode != (*b)->doubleBufferMode) ) {
+ /* Prefer single-buffer.
+ */
+ return ( !(*a)->doubleBufferMode ) ? -1 : 1;
+ }
+
+ PREFER_SMALLER( numAuxBuffers );
+
+ PREFER_LARGER_OR_ZERO( depthBits );
+ PREFER_SMALLER( stencilBits );
+
+ /* This isn't quite right. It is supposed to compare the sum of the
+ * components the user specifically set minimums for.
+ */
+ PREFER_LARGER_OR_ZERO( accumRedBits );
+ PREFER_LARGER_OR_ZERO( accumGreenBits );
+ PREFER_LARGER_OR_ZERO( accumBlueBits );
+ PREFER_LARGER_OR_ZERO( accumAlphaBits );
+
+ PREFER_SMALLER( visualType );
+
+ /* None of the multisample specs say where this comparison should happen,
+ * so I put it near the end.
+ */
+ PREFER_SMALLER( sampleBuffers );
+ PREFER_SMALLER( samples );
+
+ /* None of the pbuffer or fbconfig specs say that this comparison needs
+ * to happen at all, but it seems like it should.
+ */
+ PREFER_LARGER( maxPbufferWidth );
+ PREFER_LARGER( maxPbufferHeight );
+ PREFER_LARGER( maxPbufferPixels );
+
+ return 0;
+}
+
+
+/**
+ * Selects and sorts a subset of the supplied configs based on the attributes.
+ * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig,
+ * and \c glXChooseFBConfigSGIX.
+ *
+ * \param configs Array of pointers to possible configs. The elements of
+ * this array that do not meet the criteria will be set to
+ * NULL. The remaining elements will be sorted according to
+ * the various visual / FBConfig selection rules.
+ * \param num_configs Number of elements in the \c configs array.
+ * \param attribList Attributes used select from \c configs. This array is
+ * terminated by a \c None tag. The array can either take
+ * the form expected by \c glXChooseVisual (where boolean
+ * tags do not have a value) or by \c glXChooseFBConfig
+ * (where every tag has a value).
+ * \param fbconfig_style_tags Selects whether \c attribList is in
+ * \c glXChooseVisual style or
+ * \c glXChooseFBConfig style.
+ * \returns The number of valid elements left in \c configs.
+ *
+ * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
+ */
+static int
+choose_visual( __GLcontextModes ** configs, int num_configs,
+ const int *attribList, GLboolean fbconfig_style_tags )
+{
+ __GLcontextModes test_config;
+ int base;
+ int i;
+
+ /* This is a fairly direct implementation of the selection method
+ * described by GLX_SGIX_fbconfig. Start by culling out all the
+ * configs that are not compatible with the selected parameter
+ * list.
+ */
+
+ init_fbconfig_for_chooser( & test_config, fbconfig_style_tags );
+ __glXInitializeVisualConfigFromTags( & test_config, 512,
+ (const INT32 *) attribList,
+ GL_TRUE, fbconfig_style_tags );
+
+ base = 0;
+ for ( i = 0 ; i < num_configs ; i++ ) {
+ if ( fbconfigs_compatible( & test_config, configs[i] ) ) {
+ configs[ base ] = configs[ i ];
+ base++;
+ }
+ }
+
+ if ( base == 0 ) {
+ return 0;
+ }
+
+ if ( base < num_configs ) {
+ (void) memset( & configs[ base ], 0,
+ sizeof( void * ) * (num_configs - base) );
+ }
+
+ /* After the incompatible configs are removed, the resulting
+ * list is sorted according to the rules set out in the various
+ * specifications.
+ */
+
+ qsort( configs, base, sizeof( __GLcontextModes * ),
+ (int (*)(const void*, const void*)) fbconfig_compare );
+ return base;
+}
+
+
+
+
+/*
+** Return the visual that best matches the template. Return None if no
+** visual matches the template.
+*/
+PUBLIC XVisualInfo *glXChooseVisual(Display *dpy, int screen, int *attribList)
+{
+ XVisualInfo *visualList = NULL;
+ __GLXdisplayPrivate *priv;
+ __GLXscreenConfigs *psc;
+ __GLcontextModes test_config;
+ __GLcontextModes *modes;
+ const __GLcontextModes *best_config = NULL;
+
+ /*
+ ** Get a list of all visuals, return if list is empty
+ */
+ if ( GetGLXPrivScreenConfig( dpy, screen, & priv, & psc ) != Success ) {
+ return None;
+ }
+
+
+ /*
+ ** Build a template from the defaults and the attribute list
+ ** Free visual list and return if an unexpected token is encountered
+ */
+ init_fbconfig_for_chooser( & test_config, GL_FALSE );
+ __glXInitializeVisualConfigFromTags( & test_config, 512,
+ (const INT32 *) attribList,
+ GL_TRUE, GL_FALSE );
+
+ /*
+ ** Eliminate visuals that don't meet minimum requirements
+ ** Compute a score for those that do
+ ** Remember which visual, if any, got the highest score
+ */
+ for ( modes = psc->configs ; modes != NULL ; modes = modes->next ) {
+ if ( fbconfigs_compatible( & test_config, modes )
+ && ((best_config == NULL)
+ || (fbconfig_compare( (const __GLcontextModes * const * const)&modes, &best_config ) < 0)) ) {
+ best_config = modes;
+ }
+ }
+
+ /*
+ ** If no visual is acceptable, return None
+ ** Otherwise, create an XVisualInfo list with just the selected X visual
+ ** and return this.
+ */
+ if (best_config != NULL) {
+ XVisualInfo visualTemplate;
+ int i;
+
+ visualTemplate.screen = screen;
+ visualTemplate.visualid = best_config->visualID;
+ visualList = XGetVisualInfo( dpy, VisualScreenMask|VisualIDMask,
+ &visualTemplate, &i );
+ }
+
+ return visualList;
+}
+
+
+PUBLIC const char *glXQueryExtensionsString( Display *dpy, int screen )
+{
+ __GLXscreenConfigs *psc;
+ __GLXdisplayPrivate *priv;
+
+ if ( GetGLXPrivScreenConfig( dpy, screen, & priv, & psc ) != Success ) {
+ return NULL;
+ }
+
+ if (!psc->effectiveGLXexts) {
+ if (!psc->serverGLXexts) {
+ psc->serverGLXexts = __glXGetStringFromServer(dpy, priv->majorOpcode,
+ X_GLXQueryServerString,
+ screen, GLX_EXTENSIONS);
+ }
+
+ __glXCalculateUsableExtensions(psc,
+#ifdef GLX_DIRECT_RENDERING
+ (psc->driScreen.private != NULL),
+#else
+ GL_FALSE,
+#endif
+ priv->minorVersion);
+ }
+
+ return psc->effectiveGLXexts;
+}
+
+PUBLIC const char *glXGetClientString( Display *dpy, int name )
+{
+ switch(name) {
+ case GLX_VENDOR:
+ return (__glXGLXClientVendorName);
+ case GLX_VERSION:
+ return (__glXGLXClientVersion);
+ case GLX_EXTENSIONS:
+ return (__glXGetClientExtensions());
+ default:
+ return NULL;
+ }
+}
+
+PUBLIC const char *glXQueryServerString( Display *dpy, int screen, int name )
+{
+ __GLXscreenConfigs *psc;
+ __GLXdisplayPrivate *priv;
+ const char ** str;
+
+
+ if ( GetGLXPrivScreenConfig( dpy, screen, & priv, & psc ) != Success ) {
+ return NULL;
+ }
+
+ switch(name) {
+ case GLX_VENDOR:
+ str = & priv->serverGLXvendor;
+ break;
+ case GLX_VERSION:
+ str = & priv->serverGLXversion;
+ break;
+ case GLX_EXTENSIONS:
+ str = & psc->serverGLXexts;
+ break;
+ default:
+ return NULL;
+ }
+
+ if ( *str == NULL ) {
+ *str = __glXGetStringFromServer(dpy, priv->majorOpcode,
+ X_GLXQueryServerString, screen, name);
+ }
+
+ return *str;
+}
+
+void __glXClientInfo ( Display *dpy, int opcode )
+{
+ xGLXClientInfoReq *req;
+ int size;
+ char * ext_str = __glXGetClientGLExtensionString();
+
+ /* Send the glXClientInfo request */
+ LockDisplay(dpy);
+ GetReq(GLXClientInfo,req);
+ req->reqType = opcode;
+ req->glxCode = X_GLXClientInfo;
+ req->major = GLX_MAJOR_VERSION;
+ req->minor = GLX_MINOR_VERSION;
+
+ size = strlen( ext_str ) + 1;
+ req->length += (size + 3) >> 2;
+ req->numbytes = size;
+ Data(dpy, ext_str, size);
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+
+ Xfree( ext_str );
+}
+
+
+/*
+** EXT_import_context
+*/
+
+PUBLIC Display *glXGetCurrentDisplay(void)
+{
+ GLXContext gc = __glXGetCurrentContext();
+ if (NULL == gc) return NULL;
+ return gc->currentDpy;
+}
+
+PUBLIC GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (),
+ glXGetCurrentDisplay)
+
+/**
+ * Used internally by libGL to send \c xGLXQueryContextinfoExtReq requests
+ * to the X-server.
+ *
+ * \param dpy Display where \c ctx was created.
+ * \param ctx Context to query.
+ * \returns \c Success on success. \c GLX_BAD_CONTEXT if \c ctx is invalid,
+ * or zero if the request failed due to internal problems (i.e.,
+ * unable to allocate temporary memory, etc.)
+ *
+ * \note
+ * This function dynamically determines whether to use the EXT_import_context
+ * version of the protocol or the GLX 1.3 version of the protocol.
+ */
+static int __glXQueryContextInfo(Display *dpy, GLXContext ctx)
+{
+ __GLXdisplayPrivate *priv = __glXInitialize(dpy);
+ xGLXQueryContextReply reply;
+ CARD8 opcode;
+ GLuint numValues;
+ int retval;
+
+ if (ctx == NULL) {
+ return GLX_BAD_CONTEXT;
+ }
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode) {
+ return 0;
+ }
+
+ /* Send the glXQueryContextInfoEXT request */
+ LockDisplay(dpy);
+
+ if ( (priv->majorVersion > 1) || (priv->minorVersion >= 3) ) {
+ xGLXQueryContextReq *req;
+
+ GetReq(GLXQueryContext, req);
+
+ req->reqType = opcode;
+ req->glxCode = X_GLXQueryContext;
+ req->context = (unsigned int)(ctx->xid);
+ }
+ else {
+ xGLXVendorPrivateReq *vpreq;
+ xGLXQueryContextInfoEXTReq *req;
+
+ GetReqExtra( GLXVendorPrivate,
+ sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq,
+ vpreq );
+ req = (xGLXQueryContextInfoEXTReq *)vpreq;
+ req->reqType = opcode;
+ req->glxCode = X_GLXVendorPrivateWithReply;
+ req->vendorCode = X_GLXvop_QueryContextInfoEXT;
+ req->context = (unsigned int)(ctx->xid);
+ }
+
+ _XReply(dpy, (xReply*) &reply, 0, False);
+
+ numValues = reply.n;
+ if (numValues == 0)
+ retval = Success;
+ else if (numValues > __GLX_MAX_CONTEXT_PROPS)
+ retval = 0;
+ else
+ {
+ int *propList, *pProp;
+ int nPropListBytes;
+ int i;
+
+ nPropListBytes = numValues << 3;
+ propList = (int *) Xmalloc(nPropListBytes);
+ if (NULL == propList) {
+ retval = 0;
+ } else {
+ _XRead(dpy, (char *)propList, nPropListBytes);
+ pProp = propList;
+ for (i=0; i < numValues; i++) {
+ switch (*pProp++) {
+ case GLX_SHARE_CONTEXT_EXT:
+ ctx->share_xid = *pProp++;
+ break;
+ case GLX_VISUAL_ID_EXT:
+ ctx->vid = *pProp++;
+ break;
+ case GLX_SCREEN:
+ ctx->screen = *pProp++;
+ break;
+ case GLX_FBCONFIG_ID:
+ ctx->fbconfigID = *pProp++;
+ break;
+ case GLX_RENDER_TYPE:
+ ctx->renderType = *pProp++;
+ break;
+ default:
+ pProp++;
+ continue;
+ }
+ }
+ Xfree((char *)propList);
+ retval = Success;
+ }
+ }
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return retval;
+}
+
+PUBLIC int
+glXQueryContext(Display *dpy, GLXContext ctx, int attribute, int *value)
+{
+ int retVal;
+
+ /* get the information from the server if we don't have it already */
+ if (!ctx->isDirect && (ctx->vid == None)) {
+ retVal = __glXQueryContextInfo(dpy, ctx);
+ if (Success != retVal) return retVal;
+ }
+ switch (attribute) {
+ case GLX_SHARE_CONTEXT_EXT:
+ *value = (int)(ctx->share_xid);
+ break;
+ case GLX_VISUAL_ID_EXT:
+ *value = (int)(ctx->vid);
+ break;
+ case GLX_SCREEN:
+ *value = (int)(ctx->screen);
+ break;
+ case GLX_FBCONFIG_ID:
+ *value = (int)(ctx->fbconfigID);
+ break;
+ case GLX_RENDER_TYPE:
+ *value = (int)(ctx->renderType);
+ break;
+ default:
+ return GLX_BAD_ATTRIBUTE;
+ }
+ return Success;
+}
+
+PUBLIC GLX_ALIAS( int, glXQueryContextInfoEXT,
+ (Display *dpy, GLXContext ctx, int attribute, int *value),
+ (dpy, ctx, attribute, value),
+ glXQueryContext )
+
+PUBLIC GLXContextID glXGetContextIDEXT(const GLXContext ctx)
+{
+ return ctx->xid;
+}
+
+PUBLIC GLXContext glXImportContextEXT(Display *dpy, GLXContextID contextID)
+{
+ GLXContext ctx;
+
+ if (contextID == None) {
+ return NULL;
+ }
+ if (__glXIsDirect(dpy, contextID)) {
+ return NULL;
+ }
+
+ ctx = CreateContext(dpy, NULL, NULL, NULL, False, contextID, False, 0);
+ if (NULL != ctx) {
+ if (Success != __glXQueryContextInfo(dpy, ctx)) {
+ return NULL;
+ }
+ }
+ return ctx;
+}
+
+PUBLIC void glXFreeContextEXT(Display *dpy, GLXContext ctx)
+{
+ DestroyContext(dpy, ctx);
+}
+
+
+
+/*
+ * GLX 1.3 functions - these are just stubs for now!
+ */
+
+PUBLIC GLXFBConfig *glXChooseFBConfig(Display *dpy, int screen,
+ const int *attribList, int *nitems)
+{
+ __GLcontextModes ** config_list;
+ int list_size;
+
+
+ config_list = (__GLcontextModes **)
+ glXGetFBConfigs( dpy, screen, & list_size );
+
+ if ( (config_list != NULL) && (list_size > 0) && (attribList != NULL) ) {
+ list_size = choose_visual( config_list, list_size, attribList,
+ GL_TRUE );
+ if ( list_size == 0 ) {
+ XFree( config_list );
+ config_list = NULL;
+ }
+ }
+
+ *nitems = list_size;
+ return (GLXFBConfig *) config_list;
+}
+
+
+PUBLIC GLXContext glXCreateNewContext(Display *dpy, GLXFBConfig config,
+ int renderType, GLXContext shareList,
+ Bool allowDirect)
+{
+ return CreateContext( dpy, NULL, (__GLcontextModes *) config, shareList,
+ allowDirect, None, True, renderType );
+}
+
+
+PUBLIC GLXDrawable glXGetCurrentReadDrawable(void)
+{
+ GLXContext gc = __glXGetCurrentContext();
+ return gc->currentReadable;
+}
+
+
+PUBLIC GLXFBConfig *glXGetFBConfigs(Display *dpy, int screen, int *nelements)
+{
+ __GLXdisplayPrivate *priv = __glXInitialize(dpy);
+ __GLcontextModes ** config = NULL;
+ int i;
+
+ if ( (priv->screenConfigs != NULL)
+ && (screen >= 0) && (screen <= ScreenCount(dpy))
+ && (priv->screenConfigs[screen].configs != NULL)
+ && (priv->screenConfigs[screen].configs->fbconfigID != GLX_DONT_CARE) ) {
+ unsigned num_configs = 0;
+ __GLcontextModes * modes;
+
+
+ for ( modes = priv->screenConfigs[screen].configs
+ ; modes != NULL
+ ; modes = modes->next ) {
+ if ( modes->fbconfigID != GLX_DONT_CARE ) {
+ num_configs++;
+ }
+ }
+
+ config = (__GLcontextModes **) Xmalloc( sizeof(__GLcontextModes *)
+ * num_configs );
+ if ( config != NULL ) {
+ *nelements = num_configs;
+ i = 0;
+ for ( modes = priv->screenConfigs[screen].configs
+ ; modes != NULL
+ ; modes = modes->next ) {
+ config[i] = modes;
+ i++;
+ }
+ }
+ }
+ return (GLXFBConfig *) config;
+}
+
+
+PUBLIC int glXGetFBConfigAttrib(Display *dpy, GLXFBConfig config,
+ int attribute, int *value)
+{
+ __GLcontextModes * const modes = ValidateGLXFBConfig( dpy, config );
+
+ return (modes != NULL)
+ ? _gl_get_context_mode_data( modes, attribute, value )
+ : GLXBadFBConfig;
+}
+
+
+PUBLIC XVisualInfo *glXGetVisualFromFBConfig(Display *dpy, GLXFBConfig config)
+{
+ XVisualInfo visualTemplate;
+ __GLcontextModes * fbconfig = (__GLcontextModes *) config;
+ int count;
+
+ /*
+ ** Get a list of all visuals, return if list is empty
+ */
+ visualTemplate.visualid = fbconfig->visualID;
+ return XGetVisualInfo(dpy,VisualIDMask,&visualTemplate,&count);
+}
+
+
+/*
+** GLX_SGI_make_current_read
+*/
+
+PUBLIC GLX_ALIAS(GLXDrawable, glXGetCurrentReadDrawableSGI, (void), (),
+ glXGetCurrentReadDrawable)
+
+
+/*
+** GLX_SGI_swap_control
+*/
+PUBLIC int glXSwapIntervalSGI(int interval)
+{
+ xGLXVendorPrivateReq *req;
+ GLXContext gc = __glXGetCurrentContext();
+ Display * dpy;
+ CARD32 * interval_ptr;
+ CARD8 opcode;
+
+ if ( gc == NULL ) {
+ return GLX_BAD_CONTEXT;
+ }
+
+ if ( interval <= 0 ) {
+ return GLX_BAD_VALUE;
+ }
+
+#ifdef GLX_DIRECT_RENDERING
+ if ( gc->isDirect ) {
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
+ gc->screen );
+ __DRIdrawable * const pdraw = GetDRIDrawable( gc->currentDpy,
+ gc->currentDrawable,
+ NULL );
+ if ( __glXExtensionBitIsEnabled( psc, SGI_swap_control_bit )
+ && (pdraw != NULL) ) {
+ pdraw->swap_interval = interval;
+ return 0;
+ }
+ else {
+ return GLX_BAD_CONTEXT;
+ }
+ }
+#endif
+ dpy = gc->currentDpy;
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode) {
+ return 0;
+ }
+
+ /* Send the glXSwapIntervalSGI request */
+ LockDisplay(dpy);
+ GetReqExtra(GLXVendorPrivate,sizeof(CARD32),req);
+ req->reqType = opcode;
+ req->glxCode = X_GLXVendorPrivate;
+ req->vendorCode = X_GLXvop_SwapIntervalSGI;
+ req->contextTag = gc->currentContextTag;
+
+ interval_ptr = (CARD32 *) req + 1;
+ *interval_ptr = interval;
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+ XFlush(dpy);
+
+ return 0;
+}
+
+
+/*
+** GLX_MESA_swap_control
+*/
+PUBLIC int glXSwapIntervalMESA(unsigned int interval)
+{
+#ifdef GLX_DIRECT_RENDERING
+ GLXContext gc = __glXGetCurrentContext();
+
+ if ( interval < 0 ) {
+ return GLX_BAD_VALUE;
+ }
+
+ if ( (gc != NULL) && gc->isDirect ) {
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
+ gc->screen );
+
+ if ( (psc != NULL) && (psc->driScreen.private != NULL)
+ && __glXExtensionBitIsEnabled( psc, MESA_swap_control_bit ) ) {
+ __DRIdrawable * const pdraw =
+ (*psc->driScreen.getDrawable)(gc->currentDpy,
+ gc->currentDrawable,
+ psc->driScreen.private);
+ if ( pdraw != NULL ) {
+ pdraw->swap_interval = interval;
+ return 0;
+ }
+ }
+ }
+#else
+ (void) interval;
+#endif
+
+ return GLX_BAD_CONTEXT;
+}
+
+
+PUBLIC int glXGetSwapIntervalMESA(void)
+{
+#ifdef GLX_DIRECT_RENDERING
+ GLXContext gc = __glXGetCurrentContext();
+
+ if ( (gc != NULL) && gc->isDirect ) {
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
+ gc->screen );
+
+ if ( (psc != NULL) && (psc->driScreen.private != NULL)
+ && __glXExtensionBitIsEnabled( psc, MESA_swap_control_bit ) ) {
+ __DRIdrawable * const pdraw =
+ (*psc->driScreen.getDrawable)(gc->currentDpy,
+ gc->currentDrawable,
+ psc->driScreen.private);
+ if ( pdraw != NULL ) {
+ return pdraw->swap_interval;
+ }
+ }
+ }
+#endif
+
+ return 0;
+}
+
+
+/*
+** GLX_MESA_swap_frame_usage
+*/
+
+PUBLIC GLint glXBeginFrameTrackingMESA(Display *dpy, GLXDrawable drawable)
+{
+ int status = GLX_BAD_CONTEXT;
+#ifdef GLX_DIRECT_RENDERING
+ int screen;
+ __DRIdrawable * const pdraw = GetDRIDrawable(dpy, drawable, & screen);
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);
+
+ if ( (pdraw != NULL) && (pdraw->frameTracking != NULL)
+ && __glXExtensionBitIsEnabled( psc, MESA_swap_frame_usage_bit ) ) {
+ status = pdraw->frameTracking( dpy, pdraw->private, GL_TRUE );
+ }
+#else
+ (void) dpy;
+ (void) drawable;
+#endif
+ return status;
+}
+
+
+PUBLIC GLint glXEndFrameTrackingMESA(Display *dpy, GLXDrawable drawable)
+{
+ int status = GLX_BAD_CONTEXT;
+#ifdef GLX_DIRECT_RENDERING
+ int screen;
+ __DRIdrawable * const pdraw = GetDRIDrawable(dpy, drawable, & screen);
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);
+
+ if ( (pdraw != NULL) && (pdraw->frameTracking != NULL)
+ && __glXExtensionBitIsEnabled( psc, MESA_swap_frame_usage_bit ) ) {
+ status = pdraw->frameTracking( dpy, pdraw->private, GL_FALSE );
+ }
+#else
+ (void) dpy;
+ (void) drawable;
+#endif
+ return status;
+}
+
+
+PUBLIC GLint glXGetFrameUsageMESA(Display *dpy, GLXDrawable drawable,
+ GLfloat *usage)
+{
+ int status = GLX_BAD_CONTEXT;
+#ifdef GLX_DIRECT_RENDERING
+ int screen;
+ __DRIdrawable * const pdraw = GetDRIDrawable(dpy, drawable, & screen);
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);
+
+ if ( (pdraw != NULL ) && (pdraw->queryFrameTracking != NULL)
+ && __glXExtensionBitIsEnabled( psc, MESA_swap_frame_usage_bit ) ) {
+ int64_t sbc, missedFrames;
+ float lastMissedUsage;
+
+ status = pdraw->queryFrameTracking( dpy, pdraw->private, &sbc,
+ &missedFrames, &lastMissedUsage,
+ usage );
+ }
+#else
+ (void) dpy;
+ (void) drawable;
+ (void) usage;
+#endif
+ return status;
+}
+
+
+PUBLIC GLint glXQueryFrameTrackingMESA(Display *dpy, GLXDrawable drawable,
+ int64_t *sbc, int64_t *missedFrames,
+ GLfloat *lastMissedUsage)
+{
+ int status = GLX_BAD_CONTEXT;
+#ifdef GLX_DIRECT_RENDERING
+ int screen;
+ __DRIdrawable * const pdraw = GetDRIDrawable(dpy, drawable, & screen);
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);
+
+ if ( (pdraw != NULL ) && (pdraw->queryFrameTracking != NULL)
+ && __glXExtensionBitIsEnabled( psc, MESA_swap_frame_usage_bit ) ) {
+ float usage;
+
+ status = pdraw->queryFrameTracking( dpy, pdraw->private, sbc,
+ missedFrames, lastMissedUsage,
+ & usage );
+ }
+#else
+ (void) dpy;
+ (void) drawable;
+ (void) sbc;
+ (void) missedFrames;
+ (void) lastMissedUsage;
+#endif
+ return status;
+}
+
+
+/*
+** GLX_SGI_video_sync
+*/
+PUBLIC int glXGetVideoSyncSGI(unsigned int *count)
+{
+ /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
+ * FIXME: there should be a GLX encoding for this call. I can find no
+ * FIXME: documentation for the GLX encoding.
+ */
+#ifdef GLX_DIRECT_RENDERING
+ GLXContext gc = __glXGetCurrentContext();
+
+
+ if ( (gc != NULL) && gc->isDirect ) {
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
+ gc->screen );
+ if ( __glXExtensionBitIsEnabled( psc, SGI_video_sync_bit )
+ && psc->driScreen.private && psc->driScreen.getMSC) {
+ int ret;
+ int64_t temp;
+
+ ret = psc->driScreen.getMSC( psc->driScreen.private, & temp );
+ *count = (unsigned) temp;
+ return (ret == 0) ? 0 : GLX_BAD_CONTEXT;
+ }
+ }
+#else
+ (void) count;
+#endif
+ return GLX_BAD_CONTEXT;
+}
+
+PUBLIC int glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
+{
+#ifdef GLX_DIRECT_RENDERING
+ GLXContext gc = __glXGetCurrentContext();
+
+ if ( divisor <= 0 || remainder < 0 )
+ return GLX_BAD_VALUE;
+
+ if ( (gc != NULL) && gc->isDirect ) {
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
+ gc->screen );
+ if ( __glXExtensionBitIsEnabled( psc, SGI_video_sync_bit )
+ && psc->driScreen.private ) {
+ __DRIdrawable * const pdraw =
+ (*psc->driScreen.getDrawable)(gc->currentDpy,
+ gc->currentDrawable,
+ psc->driScreen.private);
+ if ( (pdraw != NULL) && (pdraw->waitForMSC != NULL) ) {
+ int ret;
+ int64_t msc;
+ int64_t sbc;
+
+ ret = (*pdraw->waitForMSC)( gc->currentDpy, pdraw->private,
+ 0, divisor, remainder,
+ & msc, & sbc );
+ *count = (unsigned) msc;
+ return (ret == 0) ? 0 : GLX_BAD_CONTEXT;
+ }
+ }
+ }
+#else
+ (void) count;
+#endif
+ return GLX_BAD_CONTEXT;
+}
+
+
+/*
+** GLX_SGIS_video_source
+*/
+#if defined(_VL_H)
+
+PUBLIC GLXVideoSourceSGIX glXCreateGLXVideoSourceSGIX(Display *dpy,
+ int screen, VLServer server, VLPath path,
+ int nodeClass, VLNode drainNode)
+{
+ (void) dpy;
+ (void) screen;
+ (void) server;
+ (void) path;
+ (void) nodeClass;
+ (void) drainNode;
+ return 0;
+}
+
+PUBLIC void glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
+{
+ (void) dpy;
+ (void) src;
+}
+
+#endif
+
+
+/*
+** GLX_SGIX_fbconfig
+** Many of these functions are aliased to GLX 1.3 entry points in the
+** GLX_functions table.
+*/
+
+PUBLIC GLX_ALIAS(int, glXGetFBConfigAttribSGIX,
+ (Display *dpy, GLXFBConfigSGIX config, int attribute, int *value),
+ (dpy, config, attribute, value),
+ glXGetFBConfigAttrib)
+
+PUBLIC GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX,
+ (Display *dpy, int screen, int *attrib_list, int *nelements),
+ (dpy, screen, attrib_list, nelements),
+ glXChooseFBConfig)
+
+PUBLIC GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX,
+ (Display * dpy, GLXFBConfigSGIX config),
+ (dpy, config),
+ glXGetVisualFromFBConfig)
+
+PUBLIC GLXPixmap glXCreateGLXPixmapWithConfigSGIX(Display *dpy,
+ GLXFBConfigSGIX config, Pixmap pixmap)
+{
+ xGLXVendorPrivateWithReplyReq *vpreq;
+ xGLXCreateGLXPixmapWithConfigSGIXReq *req;
+ GLXPixmap xid = None;
+ CARD8 opcode;
+ const __GLcontextModes * const fbconfig = (__GLcontextModes *) config;
+ __GLXscreenConfigs * psc;
+
+
+ if ( (dpy == NULL) || (config == NULL) ) {
+ return None;
+ }
+
+ psc = GetGLXScreenConfigs( dpy, fbconfig->screen );
+ if ( (psc != NULL)
+ && __glXExtensionBitIsEnabled( psc, SGIX_fbconfig_bit ) ) {
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode) {
+ return None;
+ }
+
+ /* Send the glXCreateGLXPixmapWithConfigSGIX request */
+ LockDisplay(dpy);
+ GetReqExtra(GLXVendorPrivateWithReply,
+ sz_xGLXCreateGLXPixmapWithConfigSGIXReq-sz_xGLXVendorPrivateWithReplyReq,vpreq);
+ req = (xGLXCreateGLXPixmapWithConfigSGIXReq *)vpreq;
+ req->reqType = opcode;
+ req->glxCode = X_GLXVendorPrivateWithReply;
+ req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;
+ req->screen = fbconfig->screen;
+ req->fbconfig = fbconfig->fbconfigID;
+ req->pixmap = pixmap;
+ req->glxpixmap = xid = XAllocID(dpy);
+ UnlockDisplay(dpy);
+ SyncHandle();
+ }
+
+ return xid;
+}
+
+PUBLIC GLXContext glXCreateContextWithConfigSGIX(Display *dpy,
+ GLXFBConfigSGIX config, int renderType,
+ GLXContext shareList, Bool allowDirect)
+{
+ GLXContext gc = NULL;
+ const __GLcontextModes * const fbconfig = (__GLcontextModes *) config;
+ __GLXscreenConfigs * psc;
+
+
+ if ( (dpy == NULL) || (config == NULL) ) {
+ return None;
+ }
+
+ psc = GetGLXScreenConfigs( dpy, fbconfig->screen );
+ if ( (psc != NULL)
+ && __glXExtensionBitIsEnabled( psc, SGIX_fbconfig_bit ) ) {
+ gc = CreateContext( dpy, NULL, (__GLcontextModes *) config, shareList,
+ allowDirect, None, False, renderType );
+ }
+
+ return gc;
+}
+
+
+PUBLIC GLXFBConfigSGIX glXGetFBConfigFromVisualSGIX(Display *dpy,
+ XVisualInfo *vis)
+{
+ __GLXdisplayPrivate *priv;
+ __GLXscreenConfigs *psc;
+
+ if ( (GetGLXPrivScreenConfig( dpy, vis->screen, & priv, & psc ) != Success)
+ && __glXExtensionBitIsEnabled( psc, SGIX_fbconfig_bit )
+ && (psc->configs->fbconfigID != GLX_DONT_CARE) ) {
+ return (GLXFBConfigSGIX) _gl_context_modes_find_visual( psc->configs,
+ vis->visualid );
+ }
+
+ return NULL;
+}
+
+
+/*
+** GLX_SGI_cushion
+*/
+PUBLIC void glXCushionSGI(Display *dpy, Window win, float cushion)
+{
+ (void) dpy;
+ (void) win;
+ (void) cushion;
+}
+
+
+/*
+** GLX_SGIX_video_resize
+*/
+PUBLIC int glXBindChannelToWindowSGIX(Display *dpy, int screen,
+ int channel , Window window)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) window;
+ return 0;
+}
+
+PUBLIC int glXChannelRectSGIX(Display *dpy, int screen, int channel,
+ int x, int y, int w, int h)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) x;
+ (void) y;
+ (void) w;
+ (void) h;
+ return 0;
+}
+
+PUBLIC int glXQueryChannelRectSGIX(Display *dpy, int screen, int channel,
+ int *x, int *y, int *w, int *h)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) x;
+ (void) y;
+ (void) w;
+ (void) h;
+ return 0;
+}
+
+int glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel,
+ int *dx, int *dy, int *dw, int *dh)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) dx;
+ (void) dy;
+ (void) dw;
+ (void) dh;
+ return 0;
+}
+
+PUBLIC int glXChannelRectSyncSGIX(Display *dpy, int screen,
+ int channel, GLenum synctype)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) synctype;
+ return 0;
+}
+
+
+#if defined(_DM_BUFFER_H_)
+
+PUBLIC Bool glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer,
+ DMparams *params, DMbuffer dmbuffer)
+{
+ (void) dpy;
+ (void) pbuffer;
+ (void) params;
+ (void) dmbuffer;
+ return False;
+}
+
+#endif
+
+
+/*
+** GLX_SGIX_swap_group
+*/
+PUBLIC void glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable,
+ GLXDrawable member)
+{
+ (void) dpy;
+ (void) drawable;
+ (void) member;
+}
+
+
+/*
+** GLX_SGIX_swap_barrier
+*/
+PUBLIC void glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable,
+ int barrier)
+{
+ (void) dpy;
+ (void) drawable;
+ (void) barrier;
+}
+
+PUBLIC Bool glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
+{
+ (void) dpy;
+ (void) screen;
+ (void) max;
+ return False;
+}
+
+
+/*
+** GLX_SUN_get_transparent_index
+*/
+PUBLIC Status glXGetTransparentIndexSUN(Display *dpy, Window overlay,
+ Window underlay, long *pTransparent)
+{
+ (void) dpy;
+ (void) overlay;
+ (void) underlay;
+ (void) pTransparent;
+ return 0;
+}
+
+
+/*
+** GLX_OML_sync_control
+*/
+PUBLIC Bool glXGetSyncValuesOML(Display *dpy, GLXDrawable drawable,
+ int64_t *ust, int64_t *msc, int64_t *sbc)
+{
+#ifdef GLX_DIRECT_RENDERING
+ __GLXdisplayPrivate * const priv = __glXInitialize(dpy);
+
+ if ( priv != NULL ) {
+ int i;
+ __DRIdrawable * const pdraw = GetDRIDrawable( dpy, drawable, & i );
+ __GLXscreenConfigs * const psc = &priv->screenConfigs[i];
+
+ assert( (pdraw == NULL) || (i != -1) );
+ return ( (pdraw && pdraw->getSBC && psc->driScreen.getMSC)
+ && __glXExtensionBitIsEnabled( psc, OML_sync_control_bit )
+ && ((*psc->driScreen.getMSC)( psc->driScreen.private, msc ) == 0)
+ && ((*pdraw->getSBC)( dpy, psc->driScreen.private, sbc ) == 0)
+ && (__glXGetUST( ust ) == 0) );
+ }
+#else
+ (void) dpy;
+ (void) drawable;
+ (void) ust;
+ (void) msc;
+ (void) sbc;
+#endif
+ return False;
+}
+
+
+/**
+ * Determine the refresh rate of the specified drawable and display.
+ *
+ * \param dpy Display whose refresh rate is to be determined.
+ * \param drawable Drawable whose refresh rate is to be determined.
+ * \param numerator Numerator of the refresh rate.
+ * \param demoninator Denominator of the refresh rate.
+ * \return If the refresh rate for the specified display and drawable could
+ * be calculated, True is returned. Otherwise False is returned.
+ *
+ * \note This function is implemented entirely client-side. A lot of other
+ * functionality is required to export GLX_OML_sync_control, so on
+ * XFree86 this function can be called for direct-rendering contexts
+ * when GLX_OML_sync_control appears in the client extension string.
+ */
+
+PUBLIC Bool glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
+ int32_t * numerator, int32_t * denominator)
+{
+#if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE )
+ __GLXdisplayPrivate * const priv = __glXInitialize(dpy);
+
+
+ if ( priv != NULL ) {
+ XF86VidModeModeLine mode_line;
+ int dot_clock;
+ int screen_num;
+ int i;
+
+
+ GetDRIDrawable( dpy, drawable, & screen_num );
+ if ( (screen_num != -1)
+ && XF86VidModeQueryVersion( dpy, & i, & i )
+ && XF86VidModeGetModeLine( dpy, screen_num, & dot_clock,
+ & mode_line ) ) {
+ unsigned n = dot_clock * 1000;
+ unsigned d = mode_line.vtotal * mode_line.htotal;
+
+# define V_INTERLACE 0x010
+# define V_DBLSCAN 0x020
+
+ if ( (mode_line.flags & V_INTERLACE) ) {
+ n *= 2;
+ }
+ else if ( (mode_line.flags & V_DBLSCAN) ) {
+ d *= 2;
+ }
+
+ /* The OML_sync_control spec requires that if the refresh rate is a
+ * whole number, that the returned numerator be equal to the refresh
+ * rate and the denominator be 1.
+ */
+
+ if ( (n % d) == 0 ) {
+ n /= d;
+ d = 1;
+ }
+ else {
+ static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 };
+
+
+ /* This is a poor man's way to reduce a fraction. It's far from
+ * perfect, but it will work well enough for this situation.
+ */
+
+ for ( i = 0 ; f[i] != 0 ; i++ ) {
+ while ( ((n % f[i]) == 0) && ((d % f[i]) == 0) ) {
+ d /= f[i];
+ n /= f[i];
+ }
+ }
+ }
+
+ *numerator = n;
+ *denominator = d;
+
+ (void) drawable;
+ return True;
+ }
+ }
+#else
+ (void) dpy;
+ (void) drawable;
+ (void) numerator;
+ (void) denominator;
+#endif
+ return False;
+}
+
+
+PUBLIC int64_t glXSwapBuffersMscOML(Display *dpy, GLXDrawable drawable,
+ int64_t target_msc, int64_t divisor,
+ int64_t remainder)
+{
+#ifdef GLX_DIRECT_RENDERING
+ int screen;
+ __DRIdrawable *pdraw = GetDRIDrawable( dpy, drawable, & screen );
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, screen );
+
+ /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
+ * error", but it also says "It [glXSwapBuffersMscOML] will return a value
+ * of -1 if the function failed because of errors detected in the input
+ * parameters"
+ */
+ if ( divisor < 0 || remainder < 0 || target_msc < 0 )
+ return -1;
+ if ( divisor > 0 && remainder >= divisor )
+ return -1;
+
+ if ( (pdraw != NULL) && (pdraw->swapBuffersMSC != NULL)
+ && __glXExtensionBitIsEnabled( psc, OML_sync_control_bit ) ) {
+ return (*pdraw->swapBuffersMSC)(dpy, pdraw->private, target_msc,
+ divisor, remainder);
+ }
+#else
+ (void) dpy;
+ (void) drawable;
+ (void) target_msc;
+ (void) divisor;
+ (void) remainder;
+#endif
+ return 0;
+}
+
+
+PUBLIC Bool glXWaitForMscOML(Display * dpy, GLXDrawable drawable,
+ int64_t target_msc, int64_t divisor,
+ int64_t remainder, int64_t *ust,
+ int64_t *msc, int64_t *sbc)
+{
+#ifdef GLX_DIRECT_RENDERING
+ int screen;
+ __DRIdrawable *pdraw = GetDRIDrawable( dpy, drawable, & screen );
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, screen );
+ int ret;
+
+ /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
+ * error", but the return type in the spec is Bool.
+ */
+ if ( divisor < 0 || remainder < 0 || target_msc < 0 )
+ return False;
+ if ( divisor > 0 && remainder >= divisor )
+ return False;
+
+ if ( (pdraw != NULL) && (pdraw->waitForMSC != NULL)
+ && __glXExtensionBitIsEnabled( psc, OML_sync_control_bit ) ) {
+ ret = (*pdraw->waitForMSC)( dpy, pdraw->private, target_msc,
+ divisor, remainder, msc, sbc );
+
+ /* __glXGetUST returns zero on success and non-zero on failure.
+ * This function returns True on success and False on failure.
+ */
+ return ( (ret == 0) && (__glXGetUST( ust ) == 0) );
+ }
+#else
+ (void) dpy;
+ (void) drawable;
+ (void) target_msc;
+ (void) divisor;
+ (void) remainder;
+ (void) ust;
+ (void) msc;
+ (void) sbc;
+#endif
+ return False;
+}
+
+
+PUBLIC Bool glXWaitForSbcOML(Display * dpy, GLXDrawable drawable,
+ int64_t target_sbc, int64_t *ust,
+ int64_t *msc, int64_t *sbc )
+{
+#ifdef GLX_DIRECT_RENDERING
+ int screen;
+ __DRIdrawable *pdraw = GetDRIDrawable( dpy, drawable, & screen );
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, screen );
+ int ret;
+
+ /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
+ * error", but the return type in the spec is Bool.
+ */
+ if ( target_sbc < 0 )
+ return False;
+
+ if ( (pdraw != NULL) && (pdraw->waitForSBC != NULL)
+ && __glXExtensionBitIsEnabled( psc, OML_sync_control_bit )) {
+ ret = (*pdraw->waitForSBC)( dpy, pdraw->private, target_sbc, msc, sbc );
+
+ /* __glXGetUST returns zero on success and non-zero on failure.
+ * This function returns True on success and False on failure.
+ */
+ return( (ret == 0) && (__glXGetUST( ust ) == 0) );
+ }
+#else
+ (void) dpy;
+ (void) drawable;
+ (void) target_sbc;
+ (void) ust;
+ (void) msc;
+ (void) sbc;
+#endif
+ return False;
+}
+
+
+/**
+ * GLX_MESA_allocate_memory
+ */
+/*@{*/
+
+PUBLIC void *glXAllocateMemoryMESA(Display *dpy, int scrn,
+ size_t size, float readFreq,
+ float writeFreq, float priority)
+{
+#ifdef GLX_DIRECT_RENDERING
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, scrn );
+
+ if ( __glXExtensionBitIsEnabled( psc, MESA_allocate_memory_bit ) ) {
+ if (psc && psc->driScreen.private && psc->driScreen.allocateMemory) {
+ return (*psc->driScreen.allocateMemory)( dpy, scrn, size,
+ readFreq, writeFreq,
+ priority );
+ }
+ }
+#else
+ (void) dpy;
+ (void) scrn;
+ (void) size;
+ (void) readFreq;
+ (void) writeFreq;
+ (void) priority;
+#endif /* GLX_DIRECT_RENDERING */
+
+ return NULL;
+}
+
+
+PUBLIC void glXFreeMemoryMESA(Display *dpy, int scrn, void *pointer)
+{
+#ifdef GLX_DIRECT_RENDERING
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, scrn );
+
+ if ( __glXExtensionBitIsEnabled( psc, MESA_allocate_memory_bit ) ) {
+ if (psc && psc->driScreen.private && psc->driScreen.freeMemory) {
+ (*psc->driScreen.freeMemory)( dpy, scrn, pointer );
+ }
+ }
+#else
+ (void) dpy;
+ (void) scrn;
+ (void) pointer;
+#endif /* GLX_DIRECT_RENDERING */
+}
+
+
+PUBLIC GLuint glXGetMemoryOffsetMESA( Display *dpy, int scrn,
+ const void *pointer )
+{
+#ifdef GLX_DIRECT_RENDERING
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, scrn );
+
+ if ( __glXExtensionBitIsEnabled( psc, MESA_allocate_memory_bit ) ) {
+ if (psc && psc->driScreen.private && psc->driScreen.memoryOffset) {
+ return (*psc->driScreen.memoryOffset)( dpy, scrn, pointer );
+ }
+ }
+#else
+ (void) dpy;
+ (void) scrn;
+ (void) pointer;
+#endif /* GLX_DIRECT_RENDERING */
+
+ return ~0L;
+}
+/*@}*/
+
+
+/**
+ * Mesa extension stubs. These will help reduce portability problems.
+ */
+/*@{*/
+
+/**
+ * Release all buffers associated with the specified GLX drawable.
+ *
+ * \todo
+ * This function was intended for stand-alone Mesa. The issue there is that
+ * the library doesn't get any notification when a window is closed. In
+ * DRI there is a similar but slightly different issue. When GLX 1.3 is
+ * supported, there are 3 different functions to destroy a drawable. It
+ * should be possible to create GLX protocol (or have it determine which
+ * protocol to use based on the type of the drawable) to have one function
+ * do the work of 3. For the direct-rendering case, this function could
+ * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
+ * This would reduce the frequency with which \c __driGarbageCollectDrawables
+ * would need to be used. This really should be done as part of the new DRI
+ * interface work.
+ *
+ * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
+ * __driGarbageCollectDrawables
+ * glXDestroyGLXPixmap
+ * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
+ * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
+ */
+PUBLIC Bool glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
+{
+ (void) dpy;
+ (void) d;
+ return False;
+}
+
+
+PUBLIC GLXPixmap glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visual,
+ Pixmap pixmap, Colormap cmap )
+{
+ (void) dpy;
+ (void) visual;
+ (void) pixmap;
+ (void) cmap;
+ return 0;
+}
+
+#define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
+PUBLIC void glXCopySubBufferMESA(Display *dpy, GLXDrawable drawable,
+ int x, int y, int width, int height)
+{
+ xGLXVendorPrivateReq *req;
+ GLXContext gc;
+ GLXContextTag tag;
+ CARD32 *drawable_ptr;
+ INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr;
+ CARD8 opcode;
+
+#ifdef GLX_DIRECT_RENDERING
+ int screen;
+ __DRIdrawable *pdraw = GetDRIDrawable( dpy, drawable, & screen );
+ if ( pdraw != NULL ) {
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, screen );
+ if ( __glXExtensionBitIsEnabled( psc, MESA_copy_sub_buffer_bit ) ) {
+ (*pdraw->copySubBuffer)(dpy, pdraw->private, x, y, width, height);
+ }
+
+ return;
+ }
+#endif
+
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode)
+ return;
+
+ /*
+ ** The calling thread may or may not have a current context. If it
+ ** does, send the context tag so the server can do a flush.
+ */
+ gc = __glXGetCurrentContext();
+ if ((gc != NULL) && (dpy == gc->currentDpy) &&
+ ((drawable == gc->currentDrawable) ||
+ (drawable == gc->currentReadable)) ) {
+ tag = gc->currentContextTag;
+ } else {
+ tag = 0;
+ }
+
+ LockDisplay(dpy);
+ GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4,req);
+ req->reqType = opcode;
+ req->glxCode = X_GLXVendorPrivate;
+ req->vendorCode = X_GLXvop_CopySubBufferMESA;
+ req->contextTag = tag;
+
+ drawable_ptr = (CARD32 *) (req + 1);
+ x_ptr = (INT32 *) (drawable_ptr + 1);
+ y_ptr = (INT32 *) (drawable_ptr + 2);
+ w_ptr = (INT32 *) (drawable_ptr + 3);
+ h_ptr = (INT32 *) (drawable_ptr + 4);
+
+ *drawable_ptr = drawable;
+ *x_ptr = x;
+ *y_ptr = y;
+ *w_ptr = width;
+ *h_ptr = height;
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+PUBLIC Bool glXSet3DfxModeMESA( int mode )
+{
+ (void) mode;
+ return GL_FALSE;
+}
+/*@}*/
+
+PUBLIC void glXBindTexImageEXT(Display *dpy,
+ GLXDrawable drawable,
+ int buffer,
+ const int *attrib_list)
+{
+ xGLXVendorPrivateReq *req;
+ GLXContext gc = __glXGetCurrentContext();
+ CARD32 *drawable_ptr;
+ INT32 *buffer_ptr;
+ CARD32 *num_attrib_ptr;
+ CARD32 *attrib_ptr;
+ CARD8 opcode;
+ unsigned int i;
+
+ if (gc == NULL)
+ return;
+
+ i = 0;
+ if (attrib_list) {
+ while (attrib_list[i * 2] != None)
+ i++;
+ }
+
+#ifdef GLX_DIRECT_RENDERING
+ if (gc->isDirect)
+ return;
+#endif
+
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode)
+ return;
+
+ LockDisplay(dpy);
+ GetReqExtra(GLXVendorPrivate, 12 + 8 * i,req);
+ req->reqType = opcode;
+ req->glxCode = X_GLXVendorPrivate;
+ req->vendorCode = X_GLXvop_BindTexImageEXT;
+ req->contextTag = gc->currentContextTag;
+
+ drawable_ptr = (CARD32 *) (req + 1);
+ buffer_ptr = (INT32 *) (drawable_ptr + 1);
+ num_attrib_ptr = (CARD32 *) (buffer_ptr + 1);
+ attrib_ptr = (CARD32 *) (num_attrib_ptr + 1);
+
+ *drawable_ptr = drawable;
+ *buffer_ptr = buffer;
+ *num_attrib_ptr = (CARD32) i;
+
+ i = 0;
+ if (attrib_list) {
+ while (attrib_list[i * 2] != None)
+ {
+ *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 0];
+ *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 1];
+ i++;
+ }
+ }
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+PUBLIC void glXReleaseTexImageEXT(Display *dpy,
+ GLXDrawable drawable,
+ int buffer)
+{
+ xGLXVendorPrivateReq *req;
+ GLXContext gc = __glXGetCurrentContext();
+ CARD32 *drawable_ptr;
+ INT32 *buffer_ptr;
+ CARD8 opcode;
+
+ if (gc == NULL)
+ return;
+
+#ifdef GLX_DIRECT_RENDERING
+ if (gc->isDirect)
+ return;
+#endif
+
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode)
+ return;
+
+ LockDisplay(dpy);
+ GetReqExtra(GLXVendorPrivate, sizeof(CARD32)+sizeof(INT32),req);
+ req->reqType = opcode;
+ req->glxCode = X_GLXVendorPrivate;
+ req->vendorCode = X_GLXvop_ReleaseTexImageEXT;
+ req->contextTag = gc->currentContextTag;
+
+ drawable_ptr = (CARD32 *) (req + 1);
+ buffer_ptr = (INT32 *) (drawable_ptr + 1);
+
+ *drawable_ptr = drawable;
+ *buffer_ptr = buffer;
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+/**
+ * \c strdup is actually not a standard ANSI C or POSIX routine.
+ * Irix will not define it if ANSI mode is in effect.
+ *
+ * \sa strdup
+ */
+char *
+__glXstrdup(const char *str)
+{
+ char *copy;
+ copy = (char *) Xmalloc(strlen(str) + 1);
+ if (!copy)
+ return NULL;
+ strcpy(copy, str);
+ return copy;
+}
+
+/*
+** glXGetProcAddress support
+*/
+
+struct name_address_pair {
+ const char *Name;
+ GLvoid *Address;
+};
+
+#define GLX_FUNCTION(f) { # f, (GLvoid *) f }
+#define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
+
+static const struct name_address_pair GLX_functions[] = {
+ /*** GLX_VERSION_1_0 ***/
+ GLX_FUNCTION( glXChooseVisual ),
+ GLX_FUNCTION( glXCopyContext ),
+ GLX_FUNCTION( glXCreateContext ),
+ GLX_FUNCTION( glXCreateGLXPixmap ),
+ GLX_FUNCTION( glXDestroyContext ),
+ GLX_FUNCTION( glXDestroyGLXPixmap ),
+ GLX_FUNCTION( glXGetConfig ),
+ GLX_FUNCTION( glXGetCurrentContext ),
+ GLX_FUNCTION( glXGetCurrentDrawable ),
+ GLX_FUNCTION( glXIsDirect ),
+ GLX_FUNCTION( glXMakeCurrent ),
+ GLX_FUNCTION( glXQueryExtension ),
+ GLX_FUNCTION( glXQueryVersion ),
+ GLX_FUNCTION( glXSwapBuffers ),
+ GLX_FUNCTION( glXUseXFont ),
+ GLX_FUNCTION( glXWaitGL ),
+ GLX_FUNCTION( glXWaitX ),
+
+ /*** GLX_VERSION_1_1 ***/
+ GLX_FUNCTION( glXGetClientString ),
+ GLX_FUNCTION( glXQueryExtensionsString ),
+ GLX_FUNCTION( glXQueryServerString ),
+
+ /*** GLX_VERSION_1_2 ***/
+ GLX_FUNCTION( glXGetCurrentDisplay ),
+
+ /*** GLX_VERSION_1_3 ***/
+ GLX_FUNCTION( glXChooseFBConfig ),
+ GLX_FUNCTION( glXCreateNewContext ),
+ GLX_FUNCTION( glXCreatePbuffer ),
+ GLX_FUNCTION( glXCreatePixmap ),
+ GLX_FUNCTION( glXCreateWindow ),
+ GLX_FUNCTION( glXDestroyPbuffer ),
+ GLX_FUNCTION( glXDestroyPixmap ),
+ GLX_FUNCTION( glXDestroyWindow ),
+ GLX_FUNCTION( glXGetCurrentReadDrawable ),
+ GLX_FUNCTION( glXGetFBConfigAttrib ),
+ GLX_FUNCTION( glXGetFBConfigs ),
+ GLX_FUNCTION( glXGetSelectedEvent ),
+ GLX_FUNCTION( glXGetVisualFromFBConfig ),
+ GLX_FUNCTION( glXMakeContextCurrent ),
+ GLX_FUNCTION( glXQueryContext ),
+ GLX_FUNCTION( glXQueryDrawable ),
+ GLX_FUNCTION( glXSelectEvent ),
+
+ /*** GLX_SGI_swap_control ***/
+ GLX_FUNCTION( glXSwapIntervalSGI ),
+
+ /*** GLX_SGI_video_sync ***/
+ GLX_FUNCTION( glXGetVideoSyncSGI ),
+ GLX_FUNCTION( glXWaitVideoSyncSGI ),
+
+ /*** GLX_SGI_make_current_read ***/
+ GLX_FUNCTION2( glXMakeCurrentReadSGI, glXMakeContextCurrent ),
+ GLX_FUNCTION2( glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable ),
+
+ /*** GLX_SGIX_video_source ***/
+#if defined(_VL_H)
+ GLX_FUNCTION( glXCreateGLXVideoSourceSGIX ),
+ GLX_FUNCTION( glXDestroyGLXVideoSourceSGIX ),
+#endif
+
+ /*** GLX_EXT_import_context ***/
+ GLX_FUNCTION( glXFreeContextEXT ),
+ GLX_FUNCTION( glXGetContextIDEXT ),
+ GLX_FUNCTION2( glXGetCurrentDisplayEXT, glXGetCurrentDisplay ),
+ GLX_FUNCTION( glXImportContextEXT ),
+ GLX_FUNCTION2( glXQueryContextInfoEXT, glXQueryContext ),
+
+ /*** GLX_SGIX_fbconfig ***/
+ GLX_FUNCTION2( glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib ),
+ GLX_FUNCTION2( glXChooseFBConfigSGIX, glXChooseFBConfig ),
+ GLX_FUNCTION( glXCreateGLXPixmapWithConfigSGIX ),
+ GLX_FUNCTION( glXCreateContextWithConfigSGIX ),
+ GLX_FUNCTION2( glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig ),
+ GLX_FUNCTION( glXGetFBConfigFromVisualSGIX ),
+
+ /*** GLX_SGIX_pbuffer ***/
+ GLX_FUNCTION( glXCreateGLXPbufferSGIX ),
+ GLX_FUNCTION( glXDestroyGLXPbufferSGIX ),
+ GLX_FUNCTION( glXQueryGLXPbufferSGIX ),
+ GLX_FUNCTION( glXSelectEventSGIX ),
+ GLX_FUNCTION( glXGetSelectedEventSGIX ),
+
+ /*** GLX_SGI_cushion ***/
+ GLX_FUNCTION( glXCushionSGI ),
+
+ /*** GLX_SGIX_video_resize ***/
+ GLX_FUNCTION( glXBindChannelToWindowSGIX ),
+ GLX_FUNCTION( glXChannelRectSGIX ),
+ GLX_FUNCTION( glXQueryChannelRectSGIX ),
+ GLX_FUNCTION( glXQueryChannelDeltasSGIX ),
+ GLX_FUNCTION( glXChannelRectSyncSGIX ),
+
+ /*** GLX_SGIX_dmbuffer **/
+#if defined(_DM_BUFFER_H_)
+ GLX_FUNCTION( glXAssociateDMPbufferSGIX ),
+#endif
+
+ /*** GLX_SGIX_swap_group ***/
+ GLX_FUNCTION( glXJoinSwapGroupSGIX ),
+
+ /*** GLX_SGIX_swap_barrier ***/
+ GLX_FUNCTION( glXBindSwapBarrierSGIX ),
+ GLX_FUNCTION( glXQueryMaxSwapBarriersSGIX ),
+
+ /*** GLX_SUN_get_transparent_index ***/
+ GLX_FUNCTION( glXGetTransparentIndexSUN ),
+
+ /*** GLX_MESA_allocate_memory ***/
+ GLX_FUNCTION( glXAllocateMemoryMESA ),
+ GLX_FUNCTION( glXFreeMemoryMESA ),
+ GLX_FUNCTION( glXGetMemoryOffsetMESA ),
+
+ /*** GLX_MESA_copy_sub_buffer ***/
+ GLX_FUNCTION( glXCopySubBufferMESA ),
+
+ /*** GLX_MESA_pixmap_colormap ***/
+ GLX_FUNCTION( glXCreateGLXPixmapMESA ),
+
+ /*** GLX_MESA_release_buffers ***/
+ GLX_FUNCTION( glXReleaseBuffersMESA ),
+
+ /*** GLX_MESA_set_3dfx_mode ***/
+ GLX_FUNCTION( glXSet3DfxModeMESA ),
+
+ /*** GLX_MESA_swap_control ***/
+ GLX_FUNCTION( glXSwapIntervalMESA ),
+ GLX_FUNCTION( glXGetSwapIntervalMESA ),
+
+ /*** GLX_MESA_swap_frame_usage ***/
+ GLX_FUNCTION( glXBeginFrameTrackingMESA ),
+ GLX_FUNCTION( glXEndFrameTrackingMESA ),
+ GLX_FUNCTION( glXGetFrameUsageMESA ),
+ GLX_FUNCTION( glXQueryFrameTrackingMESA ),
+
+ /*** GLX_ARB_get_proc_address ***/
+ GLX_FUNCTION( glXGetProcAddressARB ),
+
+ /*** GLX 1.4 ***/
+ GLX_FUNCTION2( glXGetProcAddress, glXGetProcAddressARB ),
+
+ /*** GLX_OML_sync_control ***/
+ GLX_FUNCTION( glXWaitForSbcOML ),
+ GLX_FUNCTION( glXWaitForMscOML ),
+ GLX_FUNCTION( glXSwapBuffersMscOML ),
+ GLX_FUNCTION( glXGetMscRateOML ),
+ GLX_FUNCTION( glXGetSyncValuesOML ),
+
+ /*** GLX_EXT_texture_from_pixmap ***/
+ GLX_FUNCTION( glXBindTexImageEXT ),
+ GLX_FUNCTION( glXReleaseTexImageEXT ),
+
+#ifdef GLX_DIRECT_RENDERING
+ /*** DRI configuration ***/
+ GLX_FUNCTION( glXGetScreenDriver ),
+ GLX_FUNCTION( glXGetDriverConfig ),
+#endif
+
+ { NULL, NULL } /* end of list */
+};
+
+
+static const GLvoid *
+get_glx_proc_address(const char *funcName)
+{
+ GLuint i;
+
+ /* try static functions */
+ for (i = 0; GLX_functions[i].Name; i++) {
+ if (strcmp(GLX_functions[i].Name, funcName) == 0)
+ return GLX_functions[i].Address;
+ }
+
+ return NULL;
+}
+
+
+/**
+ * Get the address of a named GL function. This is the pre-GLX 1.4 name for
+ * \c glXGetProcAddress.
+ *
+ * \param procName Name of a GL or GLX function.
+ * \returns A pointer to the named function
+ *
+ * \sa glXGetProcAddress
+ */
+PUBLIC void (*glXGetProcAddressARB(const GLubyte *procName))( void )
+{
+ typedef void (*gl_function)( void );
+ gl_function f;
+
+
+ /* Search the table of GLX and internal functions first. If that
+ * fails and the supplied name could be a valid core GL name, try
+ * searching the core GL function table. This check is done to prevent
+ * DRI based drivers from searching the core GL function table for
+ * internal API functions.
+ */
+
+ f = (gl_function) get_glx_proc_address((const char *) procName);
+ if ( (f == NULL) && (procName[0] == 'g') && (procName[1] == 'l')
+ && (procName[2] != 'X') ) {
+ f = (gl_function) _glapi_get_proc_address((const char *) procName);
+ }
+
+ return f;
+}
+
+/**
+ * Get the address of a named GL function. This is the GLX 1.4 name for
+ * \c glXGetProcAddressARB.
+ *
+ * \param procName Name of a GL or GLX function.
+ * \returns A pointer to the named function
+ *
+ * \sa glXGetProcAddressARB
+ */
+PUBLIC void (*glXGetProcAddress(const GLubyte *procName))( void )
+#if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED)
+ __attribute__ ((alias ("glXGetProcAddressARB")));
+#else
+{
+ return glXGetProcAddressARB(procName);
+}
+#endif /* __GNUC__ */
+
+
+#ifdef GLX_DIRECT_RENDERING
+/**
+ * Retrieves the verion of the internal libGL API in YYYYMMDD format. This
+ * might be used by the DRI drivers to determine how new libGL is at runtime.
+ * Drivers should not call this function directly. They should instead use
+ * \c glXGetProcAddress to obtain a pointer to the function.
+ *
+ * \returns An 8-digit decimal number representing the internal libGL API in
+ * YYYYMMDD format.
+ *
+ * \sa glXGetProcAddress, PFNGLXGETINTERNALVERSIONPROC
+ *
+ * \since Internal API version 20021121.
+ */
+int __glXGetInternalVersion(void)
+{
+ /* History:
+ * 20021121 - Initial version
+ * 20021128 - Added __glXWindowExists() function
+ * 20021207 - Added support for dynamic GLX extensions,
+ * GLX_SGI_swap_control, GLX_SGI_video_sync,
+ * GLX_OML_sync_control, and GLX_MESA_swap_control.
+ * Never officially released. Do NOT test against
+ * this version. Use 20030317 instead.
+ * 20030317 - Added support GLX_SGIX_fbconfig,
+ * GLX_MESA_swap_frame_usage, GLX_OML_swap_method,
+ * GLX_{ARB,SGIS}_multisample, and
+ * GLX_SGIX_visual_select_group.
+ * 20030606 - Added support for GLX_SGI_make_current_read.
+ * 20030813 - Made support for dynamic extensions multi-head aware.
+ * 20030818 - Added support for GLX_MESA_allocate_memory in place of the
+ * deprecated GLX_NV_vertex_array_range & GLX_MESA_agp_offset
+ * interfaces.
+ * 20031201 - Added support for the first round of DRI interface changes.
+ * Do NOT test against this version! It has binary
+ * compatibility bugs, use 20040317 instead.
+ * 20040317 - Added the 'mode' field to __DRIcontextRec.
+ * 20040415 - Added support for bindContext3 and unbindContext3.
+ * 20040602 - Add __glXGetDrawableInfo. I though that was there
+ * months ago. :(
+ * 20050727 - Gut all the old interfaces. This breaks compatability with
+ * any DRI driver built to any previous version.
+ * 20060314 - Added support for GLX_MESA_copy_sub_buffer.
+ */
+ return 20060314;
+}
+
+
+
+static Bool windowExistsFlag;
+
+static int windowExistsErrorHandler(Display *dpy, XErrorEvent *xerr)
+{
+ if (xerr->error_code == BadWindow) {
+ windowExistsFlag = GL_FALSE;
+ }
+ return 0;
+}
+
+/**
+ * Determine if a window associated with a \c GLXDrawable exists on the
+ * X-server. This function is not used internally by libGL. It is provided
+ * as a utility function for DRI drivers.
+ * Drivers should not call this function directly. They should instead use
+ * \c glXGetProcAddress to obtain a pointer to the function.
+ *
+ * \param dpy Display associated with the drawable to be queried.
+ * \param draw \c GLXDrawable to test.
+ *
+ * \returns \c GL_TRUE if a window exists that is associated with \c draw,
+ * otherwise \c GL_FALSE is returned.
+ *
+ * \warning This function is not currently thread-safe.
+ *
+ * \sa glXGetProcAddress
+ *
+ * \since Internal API version 20021128.
+ */
+Bool __glXWindowExists(Display *dpy, GLXDrawable draw)
+{
+ XWindowAttributes xwa;
+ int (*oldXErrorHandler)(Display *, XErrorEvent *);
+
+ XSync(dpy, GL_FALSE);
+ windowExistsFlag = GL_TRUE;
+ oldXErrorHandler = XSetErrorHandler(windowExistsErrorHandler);
+ XGetWindowAttributes(dpy, draw, &xwa); /* dummy request */
+ XSetErrorHandler(oldXErrorHandler);
+ return windowExistsFlag;
+}
+
+
+/**
+ * Get the unadjusted system time (UST). Currently, the UST is measured in
+ * microseconds since Epoc. The actual resolution of the UST may vary from
+ * system to system, and the units may vary from release to release.
+ * Drivers should not call this function directly. They should instead use
+ * \c glXGetProcAddress to obtain a pointer to the function.
+ *
+ * \param ust Location to store the 64-bit UST
+ * \returns Zero on success or a negative errno value on failure.
+ *
+ * \sa glXGetProcAddress, PFNGLXGETUSTPROC
+ *
+ * \since Internal API version 20030317.
+ */
+int __glXGetUST( int64_t * ust )
+{
+ struct timeval tv;
+
+ if ( ust == NULL ) {
+ return -EFAULT;
+ }
+
+ if ( gettimeofday( & tv, NULL ) == 0 ) {
+ ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec;
+ return 0;
+ } else {
+ return -errno;
+ }
+}
+#endif /* GLX_DIRECT_RENDERING */