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authorEric Anholt <eric@anholt.net>2013-10-22 14:22:04 -0700
committerKeith Packard <keithp@keithp.com>2013-10-23 08:12:28 +0800
commit7ecfab47eb221dbb996ea6c033348b8eceaeb893 (patch)
treef050c548f386b7d1bed9eb4ab077514381604cb2
parent8db4121a3c7104548fd4a138ac1d1bdea5fd22d9 (diff)
glx: Add support for the new DRI loader entrypoint.
This is going to be exposed (and not the old entrypoint) for some DRI drivers once the megadrivers series lands, and the plan is to eventually transition all drivers to that. Hopefully this is unobtrusive enough to merge to stable X servers so that they can be compatible with new Mesa versions. v2: typo fix in the comment Signed-off-by: Eric Anholt <eric@anholt.net> Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Keith Packard <keithp@keithp.com>
-rw-r--r--glx/glxdricommon.c24
1 files changed, 22 insertions, 2 deletions
diff --git a/glx/glxdricommon.c b/glx/glxdricommon.c
index b027f2498..0ab3e3071 100644
--- a/glx/glxdricommon.c
+++ b/glx/glxdricommon.c
@@ -211,6 +211,14 @@ glxConvertConfigs(const __DRIcoreExtension * core,
static const char dri_driver_path[] = DRI_DRIVER_PATH;
+/* Temporary define to allow building without a dri_interface.h from
+ * updated Mesa. Some day when we don't care about Mesa that old any
+ * more this can be removed.
+ */
+#ifndef __DRI_DRIVER_GET_EXTENSIONS
+#define __DRI_DRIVER_GET_EXTENSIONS "__driDriverGetExtensions"
+#endif
+
void *
glxProbeDriver(const char *driverName,
void **coreExt, const char *coreName, int coreVersion,
@@ -219,7 +227,8 @@ glxProbeDriver(const char *driverName,
int i;
void *driver;
char filename[PATH_MAX];
- const __DRIextension **extensions;
+ char *get_extensions_name;
+ const __DRIextension **extensions = NULL;
snprintf(filename, sizeof filename, "%s/%s_dri.so",
dri_driver_path, driverName);
@@ -231,7 +240,18 @@ glxProbeDriver(const char *driverName,
goto cleanup_failure;
}
- extensions = dlsym(driver, __DRI_DRIVER_EXTENSIONS);
+ if (asprintf(&get_extensions_name, "%s_%s",
+ __DRI_DRIVER_GET_EXTENSIONS, driverName) != -1) {
+ const __DRIextension **(*get_extensions)(void);
+
+ get_extensions = dlsym(driver, get_extensions_name);
+ if (get_extensions)
+ extensions = get_extensions();
+ free(get_extensions_name);
+ }
+
+ if (!extensions)
+ extensions = dlsym(driver, __DRI_DRIVER_EXTENSIONS);
if (extensions == NULL) {
LogMessage(X_ERROR, "AIGLX error: %s exports no extensions (%s)\n",
driverName, dlerror());