mirror of https://gitlab.freedesktop.org/mesa/mesa
597 lines
18 KiB
C
597 lines
18 KiB
C
/*
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* Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright © 2008 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Soft-
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* ware"), to deal in the Software without restriction, including without
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* limitation the rights to use, copy, modify, merge, publish, distribute,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, provided that the above copyright
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* notice(s) and this permission notice appear in all copies of the Soft-
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* ware and that both the above copyright notice(s) and this permission
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* notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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* ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
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* RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
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* THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
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* QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
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* MANCE OF THIS SOFTWARE.
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*
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* Except as contained in this notice, the name of a copyright holder shall
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* not be used in advertising or otherwise to promote the sale, use or
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* other dealings in this Software without prior written authorization of
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* the copyright holder.
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*
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* Authors:
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* Kevin E. Martin <kevin@precisioninsight.com>
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* Brian Paul <brian@precisioninsight.com>
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* Kristian Høgsberg (krh@redhat.com)
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*/
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#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
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#include <unistd.h>
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#include <dlfcn.h>
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#include <stdarg.h>
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#include "glxclient.h"
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#include "dri_common.h"
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#include "loader.h"
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#ifndef RTLD_NOW
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#define RTLD_NOW 0
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#endif
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#ifndef RTLD_GLOBAL
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#define RTLD_GLOBAL 0
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#endif
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_X_HIDDEN void
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dri_message(int level, const char *f, ...)
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{
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va_list args;
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int threshold = _LOADER_WARNING;
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const char *libgl_debug;
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libgl_debug = getenv("LIBGL_DEBUG");
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if (libgl_debug) {
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if (strstr(libgl_debug, "quiet"))
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threshold = _LOADER_FATAL;
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else if (strstr(libgl_debug, "verbose"))
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threshold = _LOADER_DEBUG;
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}
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/* Note that the _LOADER_* levels are lower numbers for more severe. */
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if (level <= threshold) {
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fprintf(stderr, "libGL%s: ", level <= _LOADER_WARNING ? " error" : "");
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va_start(args, f);
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vfprintf(stderr, f, args);
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va_end(args);
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}
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}
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#ifndef GL_LIB_NAME
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#define GL_LIB_NAME "libGL.so.1"
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#endif
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#ifndef DEFAULT_DRIVER_DIR
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/* this is normally defined in Mesa/configs/default with DRI_DRIVER_SEARCH_PATH */
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#define DEFAULT_DRIVER_DIR "/usr/local/lib/dri"
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#endif
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/**
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* Try to \c dlopen the named driver.
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*
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* This function adds the "_dri.so" suffix to the driver name and searches the
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* directories specified by the \c LIBGL_DRIVERS_PATH environment variable in
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* order to find the driver.
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*
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* \param driverName - a name like "i965", "radeon", "nouveau", etc.
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*
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* \returns
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* A handle from \c dlopen, or \c NULL if driver file not found.
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*/
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_X_HIDDEN void *
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driOpenDriver(const char *driverName)
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{
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void *glhandle, *handle;
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const char *libPaths, *p, *next;
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char realDriverName[200];
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int len;
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/* Attempt to make sure libGL symbols will be visible to the driver */
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glhandle = dlopen(GL_LIB_NAME, RTLD_NOW | RTLD_GLOBAL);
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libPaths = NULL;
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if (geteuid() == getuid()) {
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/* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
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libPaths = getenv("LIBGL_DRIVERS_PATH");
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if (!libPaths)
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libPaths = getenv("LIBGL_DRIVERS_DIR"); /* deprecated */
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}
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if (libPaths == NULL)
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libPaths = DEFAULT_DRIVER_DIR;
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handle = NULL;
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for (p = libPaths; *p; p = next) {
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next = strchr(p, ':');
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if (next == NULL) {
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len = strlen(p);
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next = p + len;
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}
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else {
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len = next - p;
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next++;
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}
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#ifdef GLX_USE_TLS
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snprintf(realDriverName, sizeof realDriverName,
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"%.*s/tls/%s_dri.so", len, p, driverName);
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InfoMessageF("OpenDriver: trying %s\n", realDriverName);
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handle = dlopen(realDriverName, RTLD_NOW | RTLD_GLOBAL);
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#endif
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if (handle == NULL) {
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snprintf(realDriverName, sizeof realDriverName,
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"%.*s/%s_dri.so", len, p, driverName);
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InfoMessageF("OpenDriver: trying %s\n", realDriverName);
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handle = dlopen(realDriverName, RTLD_NOW | RTLD_GLOBAL);
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}
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if (handle != NULL)
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break;
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else
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InfoMessageF("dlopen %s failed (%s)\n", realDriverName, dlerror());
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}
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if (!handle)
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ErrorMessageF("unable to load driver: %s_dri.so\n", driverName);
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if (glhandle)
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dlclose(glhandle);
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return handle;
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}
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_X_HIDDEN const __DRIextension **
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driGetDriverExtensions(void *handle, const char *driver_name)
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{
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const __DRIextension **extensions = NULL;
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const __DRIextension **(*get_extensions)(void);
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char *get_extensions_name;
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if (asprintf(&get_extensions_name, "%s_%s",
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__DRI_DRIVER_GET_EXTENSIONS, driver_name) != -1) {
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get_extensions = dlsym(handle, get_extensions_name);
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if (get_extensions) {
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free(get_extensions_name);
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return get_extensions();
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} else {
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InfoMessageF("driver does not expose %s(): %s\n",
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get_extensions_name, dlerror());
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free(get_extensions_name);
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}
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}
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extensions = dlsym(handle, __DRI_DRIVER_EXTENSIONS);
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if (extensions == NULL) {
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ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
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return NULL;
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}
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return extensions;
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}
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static GLboolean
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__driGetMSCRate(__DRIdrawable *draw,
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int32_t * numerator, int32_t * denominator,
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void *loaderPrivate)
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{
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__GLXDRIdrawable *glxDraw = loaderPrivate;
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return __glxGetMscRate(glxDraw->psc, numerator, denominator);
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}
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_X_HIDDEN const __DRIsystemTimeExtension systemTimeExtension = {
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.base = {__DRI_SYSTEM_TIME, 1 },
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.getUST = __glXGetUST,
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.getMSCRate = __driGetMSCRate
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};
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#define __ATTRIB(attrib, field) \
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{ attrib, offsetof(struct glx_config, field) }
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static const struct
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{
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unsigned int attrib, offset;
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} attribMap[] = {
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__ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits),
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__ATTRIB(__DRI_ATTRIB_LEVEL, level),
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__ATTRIB(__DRI_ATTRIB_RED_SIZE, redBits),
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__ATTRIB(__DRI_ATTRIB_GREEN_SIZE, greenBits),
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__ATTRIB(__DRI_ATTRIB_BLUE_SIZE, blueBits),
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__ATTRIB(__DRI_ATTRIB_ALPHA_SIZE, alphaBits),
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__ATTRIB(__DRI_ATTRIB_DEPTH_SIZE, depthBits),
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__ATTRIB(__DRI_ATTRIB_STENCIL_SIZE, stencilBits),
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__ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE, accumRedBits),
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__ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE, accumGreenBits),
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__ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE, accumBlueBits),
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__ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE, accumAlphaBits),
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__ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS, sampleBuffers),
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__ATTRIB(__DRI_ATTRIB_SAMPLES, samples),
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__ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode),
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__ATTRIB(__DRI_ATTRIB_STEREO, stereoMode),
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__ATTRIB(__DRI_ATTRIB_AUX_BUFFERS, numAuxBuffers),
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#if 0
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__ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE, transparentPixel),
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__ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE, transparentIndex),
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__ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE, transparentRed),
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__ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE, transparentGreen),
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__ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE, transparentBlue),
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__ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE, transparentAlpha),
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__ATTRIB(__DRI_ATTRIB_RED_MASK, redMask),
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__ATTRIB(__DRI_ATTRIB_GREEN_MASK, greenMask),
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__ATTRIB(__DRI_ATTRIB_BLUE_MASK, blueMask),
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__ATTRIB(__DRI_ATTRIB_ALPHA_MASK, alphaMask),
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#endif
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__ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH, maxPbufferWidth),
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__ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT, maxPbufferHeight),
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__ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS, maxPbufferPixels),
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__ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH, optimalPbufferWidth),
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__ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT, optimalPbufferHeight),
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#if 0
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__ATTRIB(__DRI_ATTRIB_SWAP_METHOD, swapMethod),
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#endif
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__ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB, bindToTextureRgb),
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__ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA, bindToTextureRgba),
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__ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE,
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bindToMipmapTexture),
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__ATTRIB(__DRI_ATTRIB_YINVERTED, yInverted),
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__ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE, sRGBCapable)
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};
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static int
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scalarEqual(struct glx_config *mode, unsigned int attrib, unsigned int value)
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{
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unsigned glxValue, i;
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for (i = 0; i < ARRAY_SIZE(attribMap); i++)
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if (attribMap[i].attrib == attrib) {
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glxValue = *(unsigned int *) ((char *) mode + attribMap[i].offset);
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return glxValue == GLX_DONT_CARE || glxValue == value;
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}
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return GL_TRUE; /* Is a non-existing attribute equal to value? */
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}
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static int
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driConfigEqual(const __DRIcoreExtension *core,
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struct glx_config *config, const __DRIconfig *driConfig)
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{
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unsigned int attrib, value, glxValue;
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int i;
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i = 0;
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while (core->indexConfigAttrib(driConfig, i++, &attrib, &value)) {
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switch (attrib) {
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case __DRI_ATTRIB_RENDER_TYPE:
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glxValue = 0;
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if (value & __DRI_ATTRIB_RGBA_BIT) {
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glxValue |= GLX_RGBA_BIT;
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}
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if (value & __DRI_ATTRIB_COLOR_INDEX_BIT) {
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glxValue |= GLX_COLOR_INDEX_BIT;
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}
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if (value & __DRI_ATTRIB_FLOAT_BIT) {
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glxValue |= GLX_RGBA_FLOAT_BIT_ARB;
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}
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if (value & __DRI_ATTRIB_UNSIGNED_FLOAT_BIT) {
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glxValue |= GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT;
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}
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if (glxValue != config->renderType)
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return GL_FALSE;
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break;
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case __DRI_ATTRIB_CONFIG_CAVEAT:
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if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
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glxValue = GLX_NON_CONFORMANT_CONFIG;
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else if (value & __DRI_ATTRIB_SLOW_BIT)
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glxValue = GLX_SLOW_CONFIG;
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else
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glxValue = GLX_NONE;
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if (glxValue != config->visualRating)
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return GL_FALSE;
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break;
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case __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS:
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glxValue = 0;
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if (value & __DRI_ATTRIB_TEXTURE_1D_BIT)
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glxValue |= GLX_TEXTURE_1D_BIT_EXT;
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if (value & __DRI_ATTRIB_TEXTURE_2D_BIT)
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glxValue |= GLX_TEXTURE_2D_BIT_EXT;
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if (value & __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT)
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glxValue |= GLX_TEXTURE_RECTANGLE_BIT_EXT;
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if (config->bindToTextureTargets != GLX_DONT_CARE &&
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glxValue != config->bindToTextureTargets)
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return GL_FALSE;
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break;
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default:
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if (!scalarEqual(config, attrib, value))
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return GL_FALSE;
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}
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}
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return GL_TRUE;
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}
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static struct glx_config *
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createDriMode(const __DRIcoreExtension * core,
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struct glx_config *config, const __DRIconfig **driConfigs)
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{
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__GLXDRIconfigPrivate *driConfig;
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int i;
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for (i = 0; driConfigs[i]; i++) {
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if (driConfigEqual(core, config, driConfigs[i]))
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break;
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}
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if (driConfigs[i] == NULL)
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return NULL;
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driConfig = malloc(sizeof *driConfig);
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if (driConfig == NULL)
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return NULL;
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driConfig->base = *config;
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driConfig->driConfig = driConfigs[i];
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return &driConfig->base;
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}
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_X_HIDDEN struct glx_config *
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driConvertConfigs(const __DRIcoreExtension * core,
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struct glx_config *configs, const __DRIconfig **driConfigs)
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{
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struct glx_config head, *tail, *m;
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tail = &head;
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head.next = NULL;
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for (m = configs; m; m = m->next) {
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tail->next = createDriMode(core, m, driConfigs);
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if (tail->next == NULL) {
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/* no matching dri config for m */
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continue;
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}
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tail = tail->next;
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}
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return head.next;
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}
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_X_HIDDEN void
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driDestroyConfigs(const __DRIconfig **configs)
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{
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int i;
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for (i = 0; configs[i]; i++)
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free((__DRIconfig *) configs[i]);
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free(configs);
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}
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_X_HIDDEN __GLXDRIdrawable *
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driFetchDrawable(struct glx_context *gc, GLXDrawable glxDrawable)
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{
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struct glx_display *const priv = __glXInitialize(gc->psc->dpy);
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__GLXDRIdrawable *pdraw;
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struct glx_screen *psc;
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if (priv == NULL)
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return NULL;
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if (glxDrawable == None)
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return NULL;
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psc = priv->screens[gc->screen];
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if (priv->drawHash == NULL)
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return NULL;
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if (__glxHashLookup(priv->drawHash, glxDrawable, (void *) &pdraw) == 0) {
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pdraw->refcount ++;
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return pdraw;
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}
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pdraw = psc->driScreen->createDrawable(psc, glxDrawable,
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glxDrawable, gc->config);
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if (pdraw == NULL) {
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ErrorMessageF("failed to create drawable\n");
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return NULL;
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}
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if (__glxHashInsert(priv->drawHash, glxDrawable, pdraw)) {
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(*pdraw->destroyDrawable) (pdraw);
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return NULL;
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}
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pdraw->refcount = 1;
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return pdraw;
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}
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_X_HIDDEN void
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driReleaseDrawables(struct glx_context *gc)
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{
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const struct glx_display *priv = gc->psc->display;
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__GLXDRIdrawable *pdraw;
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if (priv == NULL)
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return;
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if (__glxHashLookup(priv->drawHash,
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gc->currentDrawable, (void *) &pdraw) == 0) {
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if (pdraw->drawable == pdraw->xDrawable) {
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pdraw->refcount --;
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if (pdraw->refcount == 0) {
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(*pdraw->destroyDrawable)(pdraw);
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__glxHashDelete(priv->drawHash, gc->currentDrawable);
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}
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}
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}
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if (__glxHashLookup(priv->drawHash,
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gc->currentReadable, (void *) &pdraw) == 0) {
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if (pdraw->drawable == pdraw->xDrawable) {
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pdraw->refcount --;
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if (pdraw->refcount == 0) {
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(*pdraw->destroyDrawable)(pdraw);
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__glxHashDelete(priv->drawHash, gc->currentReadable);
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}
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}
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}
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gc->currentDrawable = None;
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gc->currentReadable = None;
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}
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_X_HIDDEN bool
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dri2_convert_glx_attribs(unsigned num_attribs, const uint32_t *attribs,
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unsigned *major_ver, unsigned *minor_ver,
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uint32_t *render_type, uint32_t *flags, unsigned *api,
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int *reset, unsigned *error)
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{
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unsigned i;
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bool got_profile = false;
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uint32_t profile;
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*major_ver = 1;
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*minor_ver = 0;
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*render_type = GLX_RGBA_TYPE;
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*reset = __DRI_CTX_RESET_NO_NOTIFICATION;
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*flags = 0;
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*api = __DRI_API_OPENGL;
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if (num_attribs == 0) {
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return true;
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}
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/* This is actually an internal error, but what the heck.
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*/
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if (attribs == NULL) {
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*error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
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return false;
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}
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for (i = 0; i < num_attribs; i++) {
|
|
switch (attribs[i * 2]) {
|
|
case GLX_CONTEXT_MAJOR_VERSION_ARB:
|
|
*major_ver = attribs[i * 2 + 1];
|
|
break;
|
|
case GLX_CONTEXT_MINOR_VERSION_ARB:
|
|
*minor_ver = attribs[i * 2 + 1];
|
|
break;
|
|
case GLX_CONTEXT_FLAGS_ARB:
|
|
*flags = attribs[i * 2 + 1];
|
|
break;
|
|
case GLX_CONTEXT_PROFILE_MASK_ARB:
|
|
profile = attribs[i * 2 + 1];
|
|
got_profile = true;
|
|
break;
|
|
case GLX_RENDER_TYPE:
|
|
*render_type = attribs[i * 2 + 1];
|
|
break;
|
|
case GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB:
|
|
switch (attribs[i * 2 + 1]) {
|
|
case GLX_NO_RESET_NOTIFICATION_ARB:
|
|
*reset = __DRI_CTX_RESET_NO_NOTIFICATION;
|
|
break;
|
|
case GLX_LOSE_CONTEXT_ON_RESET_ARB:
|
|
*reset = __DRI_CTX_RESET_LOSE_CONTEXT;
|
|
break;
|
|
default:
|
|
*error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
|
|
return false;
|
|
}
|
|
break;
|
|
default:
|
|
/* If an unknown attribute is received, fail.
|
|
*/
|
|
*error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (!got_profile) {
|
|
if (*major_ver > 3 || (*major_ver == 3 && *minor_ver >= 2))
|
|
*api = __DRI_API_OPENGL_CORE;
|
|
} else {
|
|
switch (profile) {
|
|
case GLX_CONTEXT_CORE_PROFILE_BIT_ARB:
|
|
/* There are no profiles before OpenGL 3.2. The
|
|
* GLX_ARB_create_context_profile spec says:
|
|
*
|
|
* "If the requested OpenGL version is less than 3.2,
|
|
* GLX_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality
|
|
* of the context is determined solely by the requested version."
|
|
*/
|
|
*api = (*major_ver > 3 || (*major_ver == 3 && *minor_ver >= 2))
|
|
? __DRI_API_OPENGL_CORE : __DRI_API_OPENGL;
|
|
break;
|
|
case GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB:
|
|
*api = __DRI_API_OPENGL;
|
|
break;
|
|
case GLX_CONTEXT_ES_PROFILE_BIT_EXT:
|
|
if (*major_ver >= 3)
|
|
*api = __DRI_API_GLES3;
|
|
else if (*major_ver == 2 && *minor_ver == 0)
|
|
*api = __DRI_API_GLES2;
|
|
else if (*major_ver == 1 && *minor_ver < 2)
|
|
*api = __DRI_API_GLES;
|
|
else {
|
|
*error = __DRI_CTX_ERROR_BAD_API;
|
|
return false;
|
|
}
|
|
break;
|
|
default:
|
|
*error = __DRI_CTX_ERROR_BAD_API;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* Unknown flag value.
|
|
*/
|
|
if (*flags & ~(__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_FORWARD_COMPATIBLE
|
|
| __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS)) {
|
|
*error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
|
|
return false;
|
|
}
|
|
|
|
/* There are no forward-compatible contexts before OpenGL 3.0. The
|
|
* GLX_ARB_create_context spec says:
|
|
*
|
|
* "Forward-compatible contexts are defined only for OpenGL versions
|
|
* 3.0 and later."
|
|
*/
|
|
if (*major_ver < 3 && (*flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0) {
|
|
*error = __DRI_CTX_ERROR_BAD_FLAG;
|
|
return false;
|
|
}
|
|
|
|
if (*major_ver >= 3 && *render_type == GLX_COLOR_INDEX_TYPE) {
|
|
*error = __DRI_CTX_ERROR_BAD_FLAG;
|
|
return false;
|
|
}
|
|
|
|
*error = __DRI_CTX_ERROR_SUCCESS;
|
|
return true;
|
|
}
|
|
|
|
#endif /* GLX_DIRECT_RENDERING */
|