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authorKristian Høgsberg <krh@bitplanet.net>2010-02-09 09:58:36 -0500
committerKristian Høgsberg <krh@bitplanet.net>2010-02-09 09:58:36 -0500
commit6e8897ff9f90601ebf6eed500ad942c11b54d1f7 (patch)
tree5a90891cfbccbf5c03f792abb2a2407c82872778 /src/glx/glxcmds.c
parent538539d8791e5b3b1ea2e95473b589934d94497e (diff)
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Retire miniglx and move the actual glx code up to src/glx
Diffstat (limited to 'src/glx/glxcmds.c')
-rw-r--r--src/glx/glxcmds.c3173
1 files changed, 3173 insertions, 0 deletions
diff --git a/src/glx/glxcmds.c b/src/glx/glxcmds.c
new file mode 100644
index 0000000..c3be974
--- /dev/null
+++ b/src/glx/glxcmds.c
@@ -0,0 +1,3173 @@
+/*
+ * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
+ * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice including the dates of first publication and
+ * either this permission notice or a reference to
+ * http://oss.sgi.com/projects/FreeB/
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Silicon Graphics, Inc.
+ * shall not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization from
+ * Silicon Graphics, Inc.
+ */
+
+/**
+ * \file glxcmds.c
+ * Client-side GLX interface.
+ */
+
+#include "glxclient.h"
+#include "glapi.h"
+#include "glxextensions.h"
+#include "glcontextmodes.h"
+
+#ifdef GLX_DIRECT_RENDERING
+#include <sys/time.h>
+#include <X11/extensions/xf86vmode.h>
+#include "xf86dri.h"
+#endif
+
+#if defined(USE_XCB)
+#include <X11/Xlib-xcb.h>
+#include <xcb/xcb.h>
+#include <xcb/glx.h>
+#endif
+
+static const char __glXGLXClientVendorName[] = "Mesa Project and SGI";
+static const char __glXGLXClientVersion[] = "1.4";
+
+
+/****************************************************************************/
+
+#ifdef GLX_DIRECT_RENDERING
+
+static Bool windowExistsFlag;
+static int
+windowExistsErrorHandler(Display * dpy, XErrorEvent * xerr)
+{
+ if (xerr->error_code == BadWindow) {
+ windowExistsFlag = GL_FALSE;
+ }
+ return 0;
+}
+
+/**
+ * Find drawables in the local hash that have been destroyed on the
+ * server.
+ *
+ * \param dpy Display to destroy drawables for
+ * \param screen Screen number to destroy drawables for
+ */
+static void
+GarbageCollectDRIDrawables(Display * dpy, __GLXscreenConfigs * sc)
+{
+ XID draw;
+ __GLXDRIdrawable *pdraw;
+ XWindowAttributes xwa;
+ int (*oldXErrorHandler) (Display *, XErrorEvent *);
+
+ /* Set no-op error handler so Xlib doesn't bail out if the windows
+ * has alreay been destroyed on the server. */
+ XSync(dpy, GL_FALSE);
+ oldXErrorHandler = XSetErrorHandler(windowExistsErrorHandler);
+
+ if (__glxHashFirst(sc->drawHash, &draw, (void *) &pdraw) == 1) {
+ do {
+ windowExistsFlag = GL_TRUE;
+ XGetWindowAttributes(dpy, draw, &xwa); /* dummy request */
+ if (!windowExistsFlag) {
+ /* Destroy the local drawable data, if the drawable no
+ longer exists in the Xserver */
+ (*pdraw->destroyDrawable) (pdraw);
+ __glxHashDelete(sc->drawHash, draw);
+ }
+ } while (__glxHashNext(sc->drawHash, &draw, (void *) &pdraw) == 1);
+ }
+
+ XSync(dpy, GL_FALSE);
+ XSetErrorHandler(oldXErrorHandler);
+}
+
+extern __GLXDRIdrawable *GetGLXDRIDrawable(Display * dpy,
+ GLXDrawable drawable,
+ int *const scrn_num);
+
+/**
+ * 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.
+ * \param scrn_num If non-NULL, the drawables screen is stored there
+ * \returns A pointer to the context's __DRIdrawable on success, or NULL if
+ * the drawable is not associated with a direct-rendering context.
+ */
+_X_HIDDEN __GLXDRIdrawable *
+GetGLXDRIDrawable(Display * dpy, GLXDrawable drawable, int *const scrn_num)
+{
+ __GLXdisplayPrivate *priv = __glXInitialize(dpy);
+ __GLXDRIdrawable *pdraw;
+ const unsigned screen_count = ScreenCount(dpy);
+ unsigned i;
+ __GLXscreenConfigs *psc;
+
+ if (priv == NULL)
+ return NULL;
+
+ for (i = 0; i < screen_count; i++) {
+ psc = &priv->screenConfigs[i];
+ if (psc->drawHash == NULL)
+ continue;
+
+ if (__glxHashLookup(psc->drawHash, drawable, (void *) &pdraw) == 0) {
+ 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
+ && 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->pc = gc->buf;
+ gc->bufEnd = gc->buf + bufSize;
+ gc->isDirect = GL_FALSE;
+ 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;
+#ifdef GLX_DIRECT_RENDERING
+ int screen = (fbconfig == NULL) ? vis->screen : fbconfig->screen;
+ __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
+#endif
+
+ 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 && psc->driScreen) {
+ const __GLcontextModes *mode;
+
+ if (fbconfig == NULL) {
+ mode = _gl_context_modes_find_visual(psc->visuals, vis->visualid);
+ if (mode == NULL) {
+ xError error;
+
+ error.errorCode = BadValue;
+ error.resourceID = vis->visualid;
+ error.sequenceNumber = dpy->request;
+ error.type = X_Error;
+ error.majorCode = gc->majorOpcode;
+ error.minorCode = X_GLXCreateContext;
+ _XError(dpy, &error);
+ return None;
+ }
+ if (renderType == 0) {
+ /* Initialize renderType now */
+ renderType = mode->rgbMode ? GLX_RGBA_TYPE : GLX_COLOR_INDEX_TYPE;
+ }
+ }
+ else {
+ mode = fbconfig;
+ }
+
+ gc->driContext = psc->driScreen->createContext(psc, mode, gc,
+ shareList,
+ renderType);
+ if (gc->driContext != NULL) {
+ gc->screen = mode->screen;
+ gc->psc = psc;
+ gc->mode = mode;
+ gc->isDirect = GL_TRUE;
+ }
+ }
+#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;
+#ifdef GLX_DIRECT_RENDERING
+ req->isDirect = gc->driContext != NULL;
+#else
+ req->isDirect = 0;
+#endif
+ }
+ 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;
+#ifdef GLX_DIRECT_RENDERING
+ req->isDirect = gc->driContext != NULL;
+#else
+ req->isDirect = 0;
+#endif
+ }
+ 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;
+#ifdef GLX_DIRECT_RENDERING
+ req->isDirect = gc->driContext != NULL;
+#else
+ req->isDirect = 0;
+#endif
+ }
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+ gc->imported = GL_FALSE;
+ }
+ else {
+ gc->xid = contextID;
+ gc->imported = GL_TRUE;
+ }
+
+ gc->renderType = renderType;
+
+ return gc;
+}
+
+PUBLIC GLXContext
+glXCreateContext(Display * dpy, XVisualInfo * vis,
+ GLXContext shareList, Bool allowDirect)
+{
+ return CreateContext(dpy, vis, NULL, shareList, allowDirect, None,
+ False, 0);
+}
+
+_X_HIDDEN 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;
+
+ if (gc->currentDpy) {
+ /* This context is bound to some thread. According to the man page,
+ * we should not actually delete the context until it's unbound.
+ * Note that we set gc->xid = None above. In MakeContextCurrent()
+ * we check for that and delete the context there.
+ */
+ __glXUnlock();
+ return;
+ }
+
+#ifdef GLX_DIRECT_RENDERING
+ /* Destroy the direct rendering context */
+ if (gc->driContext) {
+ (*gc->driContext->destroyContext) (gc->driContext, gc->psc, dpy);
+ gc->driContext = NULL;
+ GarbageCollectDRIDrawables(dpy, gc->psc);
+ }
+#endif
+
+ __glXFreeVertexArrayState(gc);
+
+ 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->driContext) {
+ int screen;
+ __GLXDRIdrawable *pdraw =
+ GetGLXDRIDrawable(dpy, gc->currentDrawable, &screen);
+
+ if (pdraw != NULL) {
+ __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
+ glFlush();
+ if (psc->driScreen->waitGL != NULL)
+ (*psc->driScreen->waitGL) (pdraw);
+ }
+ 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->driContext) {
+ int screen;
+ __GLXDRIdrawable *pdraw =
+ GetGLXDRIDrawable(dpy, gc->currentDrawable, &screen);
+
+ if (pdraw != NULL) {
+ __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
+ if (psc->driScreen->waitX != NULL)
+ (*psc->driScreen->waitX) (pdraw);
+ }
+ else
+ 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->driContext) {
+ 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->driContext) {
+ /* 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)
+{
+#if !defined(USE_XCB)
+ xGLXIsDirectReq *req;
+ xGLXIsDirectReply reply;
+#endif
+ CARD8 opcode;
+
+ opcode = __glXSetupForCommand(dpy);
+ if (!opcode) {
+ return GL_FALSE;
+ }
+
+#ifdef USE_XCB
+ xcb_connection_t *c = XGetXCBConnection(dpy);
+ xcb_glx_is_direct_reply_t *reply = xcb_glx_is_direct_reply(c,
+ xcb_glx_is_direct
+ (c, contextID),
+ NULL);
+
+ const Bool is_direct = reply->is_direct ? True : False;
+ free(reply);
+
+ return is_direct;
+#else
+ /* 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;
+#endif /* USE_XCB */
+}
+
+/**
+ * \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->driContext) {
+ 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();
+
+#ifdef GLX_DIRECT_RENDERING
+ do {
+ /* FIXME: Maybe delay __DRIdrawable creation until the drawable
+ * is actually bound to a context... */
+
+ __GLXdisplayPrivate *const priv = __glXInitialize(dpy);
+ __GLXDRIdrawable *pdraw;
+ __GLXscreenConfigs *psc;
+ __GLcontextModes *modes;
+
+ psc = &priv->screenConfigs[vis->screen];
+ if (psc->driScreen == NULL)
+ break;
+ modes = _gl_context_modes_find_visual(psc->visuals, vis->visualid);
+ pdraw = psc->driScreen->createDrawable(psc, pixmap, req->glxpixmap, modes);
+ if (pdraw == NULL) {
+ fprintf(stderr, "failed to create pixmap\n");
+ break;
+ }
+
+ if (__glxHashInsert(psc->drawHash, req->glxpixmap, pdraw)) {
+ (*pdraw->destroyDrawable) (pdraw);
+ return None; /* FIXME: Check what we're supposed to do here... */
+ }
+ } while (0);
+#endif
+
+ 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();
+
+#ifdef GLX_DIRECT_RENDERING
+ {
+ int screen;
+ __GLXdisplayPrivate *const priv = __glXInitialize(dpy);
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap, &screen);
+ __GLXscreenConfigs *psc = &priv->screenConfigs[screen];
+
+ if (pdraw != NULL) {
+ (*pdraw->destroyDrawable) (pdraw);
+ __glxHashDelete(psc->drawHash, glxpixmap);
+ }
+ }
+#endif
+}
+
+PUBLIC void
+glXSwapBuffers(Display * dpy, GLXDrawable drawable)
+{
+ GLXContext gc;
+ GLXContextTag tag;
+ CARD8 opcode;
+#ifdef USE_XCB
+ xcb_connection_t *c;
+#else
+ xGLXSwapBuffersReq *req;
+#endif
+
+#ifdef GLX_DIRECT_RENDERING
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL);
+
+ if (pdraw != NULL) {
+ glFlush();
+ (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0);
+ 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;
+ }
+
+#ifdef USE_XCB
+ c = XGetXCBConnection(dpy);
+ xcb_glx_swap_buffers(c, tag, drawable);
+ xcb_flush(c);
+#else
+ /* 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);
+#endif /* USE_XCB */
+}
+
+
+/*
+** 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;
+ __GLcontextModes *modes;
+ int status;
+
+ status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc);
+ if (status == Success) {
+ modes = _gl_context_modes_find_visual(psc->visuals, 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
+ ** If no visual is acceptable, return None
+ ** Otherwise, create an XVisualInfo list with just the selected X visual
+ ** and return this.
+ */
+ for (modes = psc->visuals; modes != NULL; modes = modes->next) {
+ if (fbconfigs_compatible(&test_config, modes)
+ && ((best_config == NULL)
+ ||
+ (fbconfig_compare
+ ((const __GLcontextModes * const *const) &modes,
+ &best_config) < 0))) {
+ XVisualInfo visualTemplate;
+ XVisualInfo *newList;
+ int i;
+
+ visualTemplate.screen = screen;
+ visualTemplate.visualid = modes->visualID;
+ newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask,
+ &visualTemplate, &i);
+
+ if (newList) {
+ Xfree(visualList);
+ visualList = newList;
+ best_config = modes;
+ }
+ }
+ }
+
+ 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 =
+ __glXQueryServerString(dpy, priv->majorOpcode, screen,
+ GLX_EXTENSIONS);
+ }
+
+ __glXCalculateUsableExtensions(psc,
+#ifdef GLX_DIRECT_RENDERING
+ (psc->driScreen != 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 = __glXQueryServerString(dpy, priv->majorOpcode, screen, name);
+ }
+
+ return *str;
+}
+
+void
+__glXClientInfo(Display * dpy, int opcode)
+{
+ char *ext_str = __glXGetClientGLExtensionString();
+ int size = strlen(ext_str) + 1;
+
+#ifdef USE_XCB
+ xcb_connection_t *c = XGetXCBConnection(dpy);
+ xcb_glx_client_info(c,
+ GLX_MAJOR_VERSION, GLX_MINOR_VERSION, size, ext_str);
+#else
+ xGLXClientInfoReq *req;
+
+ /* 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;
+
+ req->length += (size + 3) >> 2;
+ req->numbytes = size;
+ Data(dpy, ext_str, size);
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+#endif /* USE_XCB */
+
+ 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->mode =
+ _gl_context_modes_find_visual(ctx->psc->visuals, *pProp++);
+ break;
+ case GLX_SCREEN:
+ ctx->screen = *pProp++;
+ break;
+ case GLX_FBCONFIG_ID:
+ ctx->mode =
+ _gl_context_modes_find_fbconfig(ctx->psc->configs,
+ *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 */
+#ifdef GLX_DIRECT_RENDERING
+ if (!ctx->driContext && (ctx->mode == NULL)) {
+#else
+ if (ctx->mode == NULL) {
+#endif
+ 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 = ctx->mode ? ctx->mode->visualID : None;
+ break;
+ case GLX_SCREEN:
+ *value = (int) (ctx->screen);
+ break;
+ case GLX_FBCONFIG_ID:
+ *value = ctx->mode ? ctx->mode->fbconfigID : None;
+ 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;
+
+ *nelements = 0;
+ if (priv && (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) {
+ if (modes->fbconfigID != GLX_DONT_CARE) {
+ 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_swap_control
+*/
+static int
+__glXSwapIntervalSGI(int interval)
+{
+ xGLXVendorPrivateReq *req;
+ GLXContext gc = __glXGetCurrentContext();
+ __GLXscreenConfigs *psc;
+ Display *dpy;
+ CARD32 *interval_ptr;
+ CARD8 opcode;
+
+ if (gc == NULL) {
+ return GLX_BAD_CONTEXT;
+ }
+
+ if (interval <= 0) {
+ return GLX_BAD_VALUE;
+ }
+
+#ifdef __DRI_SWAP_CONTROL
+ if (gc->driContext) {
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
+ gc->screen );
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy,
+ gc->currentDrawable,
+ NULL);
+ if (psc->swapControl != NULL && pdraw != NULL) {
+ psc->swapControl->setSwapInterval(pdraw->driDrawable, interval);
+ return 0;
+ }
+ else if (pdraw == NULL) {
+ return GLX_BAD_CONTEXT;
+ }
+ }
+#endif
+ psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
+
+ if (gc->driContext && psc->driScreen && psc->driScreen->setSwapInterval) {
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy,
+ gc->currentDrawable,
+ NULL);
+ psc->driScreen->setSwapInterval(pdraw, interval);
+ return 0;
+ }
+
+ 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
+*/
+static int
+__glXSwapIntervalMESA(unsigned int interval)
+{
+ GLXContext gc = __glXGetCurrentContext();
+
+ if (interval < 0) {
+ return GLX_BAD_VALUE;
+ }
+
+#ifdef __DRI_SWAP_CONTROL
+ if (gc != NULL && gc->driContext) {
+ __GLXscreenConfigs *const psc = GetGLXScreenConfigs(gc->currentDpy,
+ gc->screen);
+
+ if ((psc != NULL) && (psc->driScreen != NULL)) {
+ __GLXDRIdrawable *pdraw =
+ GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL);
+ if (psc->swapControl != NULL && pdraw != NULL) {
+ psc->swapControl->setSwapInterval(pdraw->driDrawable, interval);
+ return 0;
+ }
+ }
+ }
+#endif
+
+ if (gc != NULL && gc->driContext) {
+ __GLXscreenConfigs *psc;
+
+ psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
+ if (psc->driScreen && psc->driScreen->setSwapInterval) {
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy,
+ gc->currentDrawable, NULL);
+ psc->driScreen->setSwapInterval(pdraw, interval);
+ return 0;
+ }
+ }
+
+ return GLX_BAD_CONTEXT;
+}
+
+
+static int
+__glXGetSwapIntervalMESA(void)
+{
+#ifdef __DRI_SWAP_CONTROL
+ GLXContext gc = __glXGetCurrentContext();
+
+ if (gc != NULL && gc->driContext) {
+ __GLXscreenConfigs *const psc = GetGLXScreenConfigs(gc->currentDpy,
+ gc->screen);
+
+ if ((psc != NULL) && (psc->driScreen != NULL)) {
+ __GLXDRIdrawable *pdraw =
+ GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL);
+ if (psc->swapControl != NULL && pdraw != NULL) {
+ return psc->swapControl->getSwapInterval(pdraw->driDrawable);
+ }
+ }
+ }
+#endif
+ if (gc != NULL && gc->driContext) {
+ __GLXscreenConfigs *psc;
+
+ psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
+ if (psc->driScreen && psc->driScreen->getSwapInterval) {
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy,
+ gc->currentDrawable, NULL);
+ return psc->driScreen->getSwapInterval(pdraw);
+ }
+ }
+
+ return 0;
+}
+
+
+/*
+** GLX_MESA_swap_frame_usage
+*/
+
+static GLint
+__glXBeginFrameTrackingMESA(Display * dpy, GLXDrawable drawable)
+{
+ int status = GLX_BAD_CONTEXT;
+#ifdef __DRI_FRAME_TRACKING
+ int screen = 0;
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
+ __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
+
+ if (pdraw != NULL && psc->frameTracking != NULL)
+ status = psc->frameTracking->frameTracking(pdraw->driDrawable, GL_TRUE);
+#else
+ (void) dpy;
+ (void) drawable;
+#endif
+ return status;
+}
+
+
+static GLint
+__glXEndFrameTrackingMESA(Display * dpy, GLXDrawable drawable)
+{
+ int status = GLX_BAD_CONTEXT;
+#ifdef __DRI_FRAME_TRACKING
+ int screen = 0;
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
+ __GLXscreenConfigs *psc = GetGLXScreenConfigs(dpy, screen);
+
+ if (pdraw != NULL && psc->frameTracking != NULL)
+ status = psc->frameTracking->frameTracking(pdraw->driDrawable,
+ GL_FALSE);
+#else
+ (void) dpy;
+ (void) drawable;
+#endif
+ return status;
+}
+
+
+static GLint
+__glXGetFrameUsageMESA(Display * dpy, GLXDrawable drawable, GLfloat * usage)
+{
+ int status = GLX_BAD_CONTEXT;
+#ifdef __DRI_FRAME_TRACKING
+ int screen = 0;
+ __GLXDRIdrawable *const pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
+ __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
+
+ if (pdraw != NULL && psc->frameTracking != NULL) {
+ int64_t sbc, missedFrames;
+ float lastMissedUsage;
+
+ status = psc->frameTracking->queryFrameTracking(pdraw->driDrawable,
+ &sbc,
+ &missedFrames,
+ &lastMissedUsage,
+ usage);
+ }
+#else
+ (void) dpy;
+ (void) drawable;
+ (void) usage;
+#endif
+ return status;
+}
+
+
+static GLint
+__glXQueryFrameTrackingMESA(Display * dpy, GLXDrawable drawable,
+ int64_t * sbc, int64_t * missedFrames,
+ GLfloat * lastMissedUsage)
+{
+ int status = GLX_BAD_CONTEXT;
+#ifdef __DRI_FRAME_TRACKING
+ int screen = 0;
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
+ __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
+
+ if (pdraw != NULL && psc->frameTracking != NULL) {
+ float usage;
+
+ status = psc->frameTracking->queryFrameTracking(pdraw->driDrawable,
+ sbc, missedFrames,
+ lastMissedUsage,
+ &usage);
+ }
+#else
+ (void) dpy;
+ (void) drawable;
+ (void) sbc;
+ (void) missedFrames;
+ (void) lastMissedUsage;
+#endif
+ return status;
+}
+
+
+/*
+** GLX_SGI_video_sync
+*/
+static int
+__glXGetVideoSyncSGI(unsigned int *count)
+{
+ int64_t ust, msc, sbc;
+ int ret;
+ GLXContext gc = __glXGetCurrentContext();
+ __GLXscreenConfigs *psc;
+ __GLXDRIdrawable *pdraw;
+
+ if (!gc || !gc->driContext)
+ return GLX_BAD_CONTEXT;
+
+ psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen);
+ pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL);
+
+ /* 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 __DRI_MEDIA_STREAM_COUNTER
+ if ( psc->msc && psc->driScreen ) {
+ ret = (*psc->msc->getDrawableMSC)(psc->__driScreen,
+ pdraw->driDrawable, &msc);
+ *count = (unsigned) msc;
+
+ return (ret == 0) ? 0 : GLX_BAD_CONTEXT;
+ }
+#endif
+ if (psc->driScreen && psc->driScreen->getDrawableMSC) {
+ ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc);
+ *count = (unsigned) msc;
+ return (ret == True) ? 0 : GLX_BAD_CONTEXT;
+ }
+
+ return GLX_BAD_CONTEXT;
+}
+
+static int
+__glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
+{
+ GLXContext gc = __glXGetCurrentContext();
+ __GLXscreenConfigs *psc;
+ __GLXDRIdrawable *pdraw;
+ int64_t ust, msc, sbc;
+ int ret;
+
+ if (divisor <= 0 || remainder < 0)
+ return GLX_BAD_VALUE;
+
+ if (!gc || !gc->driContext)
+ return GLX_BAD_CONTEXT;
+
+ psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
+ pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL);
+
+#ifdef __DRI_MEDIA_STREAM_COUNTER
+ if (psc->msc != NULL && psc->driScreen ) {
+ ret = (*psc->msc->waitForMSC)(pdraw->driDrawable, 0,
+ divisor, remainder, &msc, &sbc);
+ *count = (unsigned) msc;
+ return (ret == 0) ? 0 : GLX_BAD_CONTEXT;
+ }
+#endif
+ if (psc->driScreen && psc->driScreen->waitForMSC) {
+ ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc,
+ &sbc);
+ *count = (unsigned) msc;
+ return (ret == True) ? 0 : GLX_BAD_CONTEXT;
+ }
+
+ return GLX_BAD_CONTEXT;
+}
+
+
+/*
+** 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 = NULL;
+
+ 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_SGIX_swap_group
+*/
+static void
+__glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable,
+ GLXDrawable member)
+{
+ (void) dpy;
+ (void) drawable;
+ (void) member;
+}
+
+
+/*
+** GLX_SGIX_swap_barrier
+*/
+static void
+__glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier)
+{
+ (void) dpy;
+ (void) drawable;
+ (void) barrier;
+}
+
+static Bool
+__glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max)
+{
+ (void) dpy;
+ (void) screen;
+ (void) max;
+ return False;
+}
+
+
+/*
+** GLX_OML_sync_control
+*/
+static Bool
+__glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable,
+ int64_t * ust, int64_t * msc, int64_t * sbc)
+{
+ __GLXdisplayPrivate * const priv = __glXInitialize(dpy);
+ int i, ret;
+ __GLXDRIdrawable *pdraw;
+ __GLXscreenConfigs *psc;
+
+ if (!priv)
+ return False;
+
+ pdraw = GetGLXDRIDrawable(dpy, drawable, &i);
+ psc = &priv->screenConfigs[i];
+
+#if defined(__DRI_SWAP_BUFFER_COUNTER) && defined(__DRI_MEDIA_STREAM_COUNTER)
+ if (pdraw && psc->sbc && psc->sbc)
+ return ( (pdraw && psc->sbc && psc->msc)
+ && ((*psc->msc->getMSC)(psc->driScreen, msc) == 0)
+ && ((*psc->sbc->getSBC)(pdraw->driDrawable, sbc) == 0)
+ && (__glXGetUST(ust) == 0) );
+#endif
+ if (pdraw && psc && psc->driScreen && psc->driScreen->getDrawableMSC) {
+ ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc);
+ return ret;
+ }
+
+ return False;
+}
+
+#ifdef GLX_DIRECT_RENDERING
+_X_HIDDEN GLboolean
+__driGetMscRateOML(__DRIdrawable * draw,
+ int32_t * numerator, int32_t * denominator, void *private)
+{
+#ifdef XF86VIDMODE
+ __GLXscreenConfigs *psc;
+ XF86VidModeModeLine mode_line;
+ int dot_clock;
+ int i;
+ __GLXDRIdrawable *glxDraw = private;
+
+ psc = glxDraw->psc;
+ if (XF86VidModeQueryVersion(psc->dpy, &i, &i) &&
+ XF86VidModeGetModeLine(psc->dpy, psc->scr, &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;
+
+ return True;
+ }
+ else
+ return False;
+#else
+ return False;
+#endif
+}
+#endif
+
+/**
+ * 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.
+ */
+
+_X_HIDDEN GLboolean
+__glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
+ int32_t * numerator, int32_t * denominator)
+{
+#if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE )
+ __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable, NULL);
+
+ if (draw == NULL)
+ return False;
+
+ return __driGetMscRateOML(draw->driDrawable, numerator, denominator, draw);
+#else
+ (void) dpy;
+ (void) drawable;
+ (void) numerator;
+ (void) denominator;
+#endif
+ return False;
+}
+
+
+static int64_t
+__glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable,
+ int64_t target_msc, int64_t divisor, int64_t remainder)
+{
+ GLXContext gc = __glXGetCurrentContext();
+ int screen;
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
+ __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
+
+ if (!pdraw || !gc->driContext) /* no GLX for this */
+ return -1;
+
+ /* 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;
+
+#ifdef __DRI_SWAP_BUFFER_COUNTER
+ if (psc->counters != NULL)
+ return (*psc->sbc->swapBuffersMSC)(pdraw->driDrawable, target_msc,
+ divisor, remainder);
+#endif
+
+#ifdef GLX_DIRECT_RENDERING
+ if (psc->driScreen && psc->driScreen->swapBuffers)
+ return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor,
+ remainder);
+#endif
+
+ return -1;
+}
+
+
+static 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)
+{
+ int screen;
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
+ __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, screen );
+ int ret;
+
+ fprintf(stderr, "waitmsc: %lld, %lld, %lld\n", target_msc, divisor,
+ remainder);
+
+ /* 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;
+
+#ifdef __DRI_MEDIA_STREAM_COUNTER
+ if (pdraw != NULL && psc->msc != NULL) {
+ fprintf(stderr, "dri1 msc\n");
+ ret = (*psc->msc->waitForMSC) (pdraw->driDrawable, 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));
+ }
+#endif
+ if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) {
+ ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder,
+ ust, msc, sbc);
+ return ret;
+ }
+
+ fprintf(stderr, "no drawable??\n");
+ return False;
+}
+
+
+static Bool
+__glXWaitForSbcOML(Display * dpy, GLXDrawable drawable,
+ int64_t target_sbc, int64_t * ust,
+ int64_t * msc, int64_t * sbc)
+{
+ int screen;
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(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;
+#ifdef __DRI_SWAP_BUFFER_COUNTER
+ if (pdraw != NULL && psc->sbc != NULL) {
+ ret =
+ (*psc->sbc->waitForSBC) (pdraw->driDrawable, 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));
+ }
+#endif
+ if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) {
+ ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc);
+ return ret;
+ }
+ return False;
+}
+
+
+/**
+ * GLX_MESA_allocate_memory
+ */
+/*@{*/
+
+PUBLIC void *
+glXAllocateMemoryMESA(Display * dpy, int scrn,
+ size_t size, float readFreq,
+ float writeFreq, float priority)
+{
+#ifdef __DRI_ALLOCATE
+ __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, scrn);
+
+ if (psc && psc->allocate)
+ return (*psc->allocate->allocateMemory) (psc->__driScreen, size,
+ readFreq, writeFreq, priority);
+
+#else
+ (void) dpy;
+ (void) scrn;
+ (void) size;
+ (void) readFreq;
+ (void) writeFreq;
+ (void) priority;
+#endif /* __DRI_ALLOCATE */
+
+ return NULL;
+}
+
+
+PUBLIC void
+glXFreeMemoryMESA(Display * dpy, int scrn, void *pointer)
+{
+#ifdef __DRI_ALLOCATE
+ __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, scrn);
+
+ if (psc && psc->allocate)
+ (*psc->allocate->freeMemory) (psc->__driScreen, pointer);
+
+#else
+ (void) dpy;
+ (void) scrn;
+ (void) pointer;
+#endif /* __DRI_ALLOCATE */
+}
+
+
+PUBLIC GLuint
+glXGetMemoryOffsetMESA(Display * dpy, int scrn, const void *pointer)
+{
+#ifdef __DRI_ALLOCATE
+ __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, scrn);
+
+ if (psc && psc->allocate)
+ return (*psc->allocate->memoryOffset) (psc->__driScreen, 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
+ */
+static 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;
+}
+
+/*@}*/
+
+
+/**
+ * GLX_MESA_copy_sub_buffer
+ */
+#define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
+static 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 __DRI_COPY_SUB_BUFFER
+ int screen;
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
+ if (pdraw != NULL) {
+ __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
+ if (psc->driScreen->copySubBuffer != NULL) {
+ glFlush();
+ (*psc->driScreen->copySubBuffer) (pdraw, 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();
+}
+
+
+/**
+ * GLX_EXT_texture_from_pixmap
+ */
+/*@{*/
+static 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->driContext) {
+ __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL);
+
+ if (pdraw != NULL) {
+ if (pdraw->psc->texBuffer->base.version >= 2 &&
+ pdraw->psc->texBuffer->setTexBuffer2 != NULL) {
+ (*pdraw->psc->texBuffer->setTexBuffer2) (gc->__driContext,
+ pdraw->textureTarget,
+ pdraw->textureFormat,
+ pdraw->driDrawable);
+ }
+ else {
+ (*pdraw->psc->texBuffer->setTexBuffer) (gc->__driContext,
+ pdraw->textureTarget,
+ pdraw->driDrawable);
+ }
+ }
+ 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();
+}
+
+static 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->driContext)
+ 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
+ */
+_X_HIDDEN 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_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI),
+
+ /*** GLX_SGI_video_sync ***/
+ GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI),
+ GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI),
+
+ /*** GLX_SGI_make_current_read ***/
+ GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent),
+ GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable),
+
+ /*** 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_SGIX_swap_group ***/
+ GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX),
+
+ /*** GLX_SGIX_swap_barrier ***/
+ GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX),
+ GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX),
+
+ /*** GLX_MESA_allocate_memory ***/
+ GLX_FUNCTION(glXAllocateMemoryMESA),
+ GLX_FUNCTION(glXFreeMemoryMESA),
+ GLX_FUNCTION(glXGetMemoryOffsetMESA),
+
+ /*** GLX_MESA_copy_sub_buffer ***/
+ GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA),
+
+ /*** GLX_MESA_pixmap_colormap ***/
+ GLX_FUNCTION(glXCreateGLXPixmapMESA),
+
+ /*** GLX_MESA_release_buffers ***/
+ GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA),
+
+ /*** GLX_MESA_swap_control ***/
+ GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA),
+ GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA),
+
+ /*** GLX_MESA_swap_frame_usage ***/
+ GLX_FUNCTION2(glXBeginFrameTrackingMESA, __glXBeginFrameTrackingMESA),
+ GLX_FUNCTION2(glXEndFrameTrackingMESA, __glXEndFrameTrackingMESA),
+ GLX_FUNCTION2(glXGetFrameUsageMESA, __glXGetFrameUsageMESA),
+ GLX_FUNCTION2(glXQueryFrameTrackingMESA, __glXQueryFrameTrackingMESA),
+
+ /*** GLX_ARB_get_proc_address ***/
+ GLX_FUNCTION(glXGetProcAddressARB),
+
+ /*** GLX 1.4 ***/
+ GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB),
+
+ /*** GLX_OML_sync_control ***/
+ GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML),
+ GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML),
+ GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML),
+ GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML),
+ GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML),
+
+ /*** GLX_EXT_texture_from_pixmap ***/
+ GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT),
+ GLX_FUNCTION2(glXReleaseTexImageEXT, __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
+/**
+ * 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.
+ */
+_X_HIDDEN 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 */