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egl: Add an optional function call for getting the DRI driver interface.

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v2: Fix asprintf error checking.

Reviewed-by: Matt Turner <mattst88@gmail.com> (v1)
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
This commit is contained in:
Eric Anholt
2013-09-24 11:05:22 -07:00
parent fcb57a8210
commit a64bb7553a
1 changed files with 18 additions and 2 deletions
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20
src/egl/drivers/dri2/egl_dri2.c
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@@ -367,8 +367,10 @@ static const __DRIextension **
dri2_open_driver(_EGLDisplay *disp)
{
struct dri2_egl_display *dri2_dpy = disp->DriverData;
const __DRIextension **extensions;
const __DRIextension **extensions = NULL;
char path[PATH_MAX], *search_paths, *p, *next, *end;
char *get_extensions_name;
const __DRIextension **(*get_extensions)(void);
search_paths = NULL;
if (geteuid() == getuid()) {
@@ -409,7 +411,21 @@ dri2_open_driver(_EGLDisplay *disp)
}
_eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
if (asprintf(&get_extensions_name, "%s_%s",
__DRI_DRIVER_GET_EXTENSIONS, dri2_dpy->driver_name) != -1) {
get_extensions = dlsym(dri2_dpy->driver, get_extensions_name);
if (get_extensions) {
extensions = get_extensions();
} else {
_eglLog(_EGL_DEBUG, "driver does not expose %s(): %s\n",
get_extensions_name, dlerror());
}
free(get_extensions_name);
}
if (!extensions)
extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
if (extensions == NULL) {
_eglLog(_EGL_WARNING,
"DRI2: driver exports no extensions (%s)", dlerror());