Mesa (master): glx: Move the driver extension-loading to a helper function.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: 80806c98ef9892abb225965f29027c9b201749ec
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=80806c98ef9892abb225965f29027c9b201749ec

Author: Eric Anholt <eric at anholt.net>
Date:   Fri Sep 27 15:36:59 2013 -0700

glx: Move the driver extension-loading to a helper function.

I'm planning on doing driver extension parsing from 3 places, and making
the extension loading step a bit longer.

Reviewed-by: Matt Turner <mattst88 at gmail.com>
Reviewed-by: Chad Versace <chad.versace at linux.intel.com>
Reviewed-by: Emil Velikov <emil.l.velikov at gmail.com>

---

 src/glx/dri2_glx.c   |    6 ++----
 src/glx/dri_common.c |   14 ++++++++++++++
 src/glx/dri_common.h |    2 ++
 3 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/src/glx/dri2_glx.c b/src/glx/dri2_glx.c
index 07138fb..123c87c 100644
--- a/src/glx/dri2_glx.c
+++ b/src/glx/dri2_glx.c
@@ -1183,11 +1183,9 @@ dri2CreateScreen(int screen, struct glx_display * priv)
       goto handle_error;
    }
 
-   extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
-   if (extensions == NULL) {
-      ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
+   extensions = driGetDriverExtensions(psc->driver);
+   if (extensions == NULL)
       goto handle_error;
-   }
 
    for (i = 0; extensions[i]; i++) {
       if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
diff --git a/src/glx/dri_common.c b/src/glx/dri_common.c
index 5f199e9..f1d1164 100644
--- a/src/glx/dri_common.c
+++ b/src/glx/dri_common.c
@@ -187,6 +187,20 @@ driOpenDriver(const char *driverName)
    return handle;
 }
 
+_X_HIDDEN const __DRIextension **
+driGetDriverExtensions(void *handle)
+{
+   const __DRIextension **extensions = NULL;
+
+   extensions = dlsym(handle, __DRI_DRIVER_EXTENSIONS);
+   if (extensions == NULL) {
+      ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
+      return NULL;
+   }
+
+   return extensions;
+}
+
 static GLboolean
 __driGetMSCRate(__DRIdrawable *draw,
 		int32_t * numerator, int32_t * denominator,
diff --git a/src/glx/dri_common.h b/src/glx/dri_common.h
index 2bbffa9..2ebcb81 100644
--- a/src/glx/dri_common.h
+++ b/src/glx/dri_common.h
@@ -69,6 +69,8 @@ extern void CriticalErrorMessageF(const char *f, ...);
 
 extern void *driOpenDriver(const char *driverName);
 
+extern const __DRIextension **driGetDriverExtensions(void *handle);
+
 extern bool
 dri2_convert_glx_attribs(unsigned num_attribs, const uint32_t *attribs,
                          unsigned *major_ver, unsigned *minor_ver,