From cf69eeacc6931e833e7894a379af4fae085881e9 Mon Sep 17 00:00:00 2001
From: Chia-I Wu <olv@lunarg.com>
Date: Wed, 8 Jun 2011 16:33:55 +0800
Subject: [PATCH] egl_dri2: add dri2_load_driver_swrast

Refactor dri2_load_driver and add dri2_load_driver_swrast for loading
swrast DRI driver.
---
 src/egl/drivers/dri2/egl_dri2.c     | 56 ++++++++++++++++++++---------
 src/egl/drivers/dri2/egl_dri2.h     |  3 ++
 src/egl/drivers/dri2/platform_x11.c |  4 +--
 3 files changed, 44 insertions(+), 19 deletions(-)

diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index 3d5827e15a1..a38bff5711d 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -334,8 +334,8 @@ dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
    return ret;
 }
 
-EGLBoolean
-dri2_load_driver(_EGLDisplay *disp)
+static const __DRIextension **
+dri2_open_driver(_EGLDisplay *disp)
 {
    struct dri2_egl_display *dri2_dpy = disp->DriverData;
    const __DRIextension **extensions;
@@ -374,9 +374,9 @@ dri2_load_driver(_EGLDisplay *disp)
 
    if (dri2_dpy->driver == NULL) {
       _eglLog(_EGL_WARNING,
-	      "DRI2: failed to open any driver (search paths %s)",
-	      search_paths);
-      return EGL_FALSE;
+	      "DRI2: failed to open %s (search paths %s)",
+	      dri2_dpy->driver_name, search_paths);
+      return NULL;
    }
 
    _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
@@ -385,20 +385,44 @@ dri2_load_driver(_EGLDisplay *disp)
       _eglLog(_EGL_WARNING,
 	      "DRI2: driver exports no extensions (%s)", dlerror());
       dlclose(dri2_dpy->driver);
+   }
+
+   return extensions;
+}
+
+EGLBoolean
+dri2_load_driver(_EGLDisplay *disp)
+{
+   struct dri2_egl_display *dri2_dpy = disp->DriverData;
+   const __DRIextension **extensions;
+
+   extensions = dri2_open_driver(disp);
+   if (!extensions)
+      return EGL_FALSE;
+
+   if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions)) {
+      dlclose(dri2_dpy->driver);
       return EGL_FALSE;
    }
 
-   if (strcmp(dri2_dpy->driver_name, "swrast") == 0) {
-      if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions)) {
-         dlclose(dri2_dpy->driver);
-         return EGL_FALSE;
-      }
-   } else {
-      if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions)) {
-         dlclose(dri2_dpy->driver);
-         return EGL_FALSE;
-      }
-   } 
+   return EGL_TRUE;
+}
+
+EGLBoolean
+dri2_load_driver_swrast(_EGLDisplay *disp)
+{
+   struct dri2_egl_display *dri2_dpy = disp->DriverData;
+   const __DRIextension **extensions;
+
+   dri2_dpy->driver_name = "swrast";
+   extensions = dri2_open_driver(disp);
+   if (!extensions)
+      return EGL_FALSE;
+
+   if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions)) {
+      dlclose(dri2_dpy->driver);
+      return EGL_FALSE;
+   }
 
    return EGL_TRUE;
 }
diff --git a/src/egl/drivers/dri2/egl_dri2.h b/src/egl/drivers/dri2/egl_dri2.h
index 97f541b5e83..dd9eb94cf7a 100644
--- a/src/egl/drivers/dri2/egl_dri2.h
+++ b/src/egl/drivers/dri2/egl_dri2.h
@@ -182,6 +182,9 @@ extern const __DRIuseInvalidateExtension use_invalidate;
 EGLBoolean
 dri2_load_driver(_EGLDisplay *disp);
 
+EGLBoolean
+dri2_load_driver_swrast(_EGLDisplay *disp);
+
 EGLBoolean
 dri2_create_screen(_EGLDisplay *disp);
 
diff --git a/src/egl/drivers/dri2/platform_x11.c b/src/egl/drivers/dri2/platform_x11.c
index 2e26ff00b67..8bff294c9e6 100644
--- a/src/egl/drivers/dri2/platform_x11.c
+++ b/src/egl/drivers/dri2/platform_x11.c
@@ -906,9 +906,7 @@ dri2_initialize_x11_swrast(_EGLDriver *drv, _EGLDisplay *disp)
       goto cleanup_dpy;
    }
 
-   dri2_dpy->driver_name = dri2_strndup("swrast", strlen("swrast"));
-
-   if (!dri2_load_driver(disp))
+   if (!dri2_load_driver_swrast(disp))
       goto cleanup_conn;
 
    dri2_dpy->swrast_loader_extension.base.name = __DRI_SWRAST_LOADER;
-- 
2.30.2