st/egl: Move module loading code to targets.

Several changes are made.  libegl.a no longer defines _eglMain.  It
defines functions to create and destroy a _EGLDriver instead.  The
creation function is called by the targets.  It takes an egl_g3d_loader
as its argument.  The loader is defined by the targets and is in charge
of creating st_api and pipe_screen.  This allows us to move the module
loading code to targets.  Lastly, the modules are now loaded as the
respective contexts are created.

4 files changed, 27 insertions, 38 deletions

diff --git a/src/gallium/state_trackers/egl/x11/native_dri2.c b/src/gallium/state_trackers/egl/x11/native_dri2.c
index 7464354fe6..1bef59d864 100644
--- a/src/gallium/state_trackers/egl/x11/native_dri2.c
+++ b/src/gallium/state_trackers/egl/x11/native_dri2.c
@@ -692,7 +692,6 @@ static boolean
 dri2_display_init_screen(struct native_display *ndpy)
 {
    struct dri2_display *dri2dpy = dri2_display(ndpy);
-   const char *driver = driver_descriptor.name;
    int fd;
 
    if (!x11_screen_support(dri2dpy->xscr, X11_SCREEN_EXTENSION_DRI2) ||
@@ -703,19 +702,15 @@ dri2_display_init_screen(struct native_display *ndpy)
 
    dri2dpy->dri_driver = x11_screen_probe_dri2(dri2dpy->xscr,
          &dri2dpy->dri_major, &dri2dpy->dri_minor);
-   if (!dri2dpy->dri_driver || !driver ||
-       strcmp(dri2dpy->dri_driver, driver) != 0) {
-      _eglLog(_EGL_WARNING, "Driver mismatch: %s != %s",
-            dri2dpy->dri_driver, driver);
-      return FALSE;
-   }
 
    fd = x11_screen_enable_dri2(dri2dpy->xscr,
          dri2_display_invalidate_buffers, &dri2dpy->base);
    if (fd < 0)
       return FALSE;
 
-   dri2dpy->base.screen = driver_descriptor.create_screen(fd);
+   dri2dpy->base.screen =
+      dri2dpy->event_handler->new_drm_screen(&dri2dpy->base,
+            dri2dpy->dri_driver, fd);
    if (!dri2dpy->base.screen) {
       _eglLog(_EGL_WARNING, "failed to create DRM screen");
       return FALSE;
@@ -739,7 +734,8 @@ dri2_display_hash_table_compare(void *key1, void *key2)
 
 struct native_display *
 x11_create_dri2_display(Display *dpy,
-                        struct native_event_handler *event_handler)
+                        struct native_event_handler *event_handler,
+                        void *user_data)
 {
    struct dri2_display *dri2dpy;
 
@@ -748,6 +744,7 @@ x11_create_dri2_display(Display *dpy,
       return NULL;
 
    dri2dpy->event_handler = event_handler;
+   dri2dpy->base.user_data = user_data;
 
    dri2dpy->dpy = dpy;
    if (!dri2dpy->dpy) {
diff --git a/src/gallium/state_trackers/egl/x11/native_x11.c b/src/gallium/state_trackers/egl/x11/native_x11.c
index 7eec563bdf..f0519405d3 100644
--- a/src/gallium/state_trackers/egl/x11/native_x11.c
+++ b/src/gallium/state_trackers/egl/x11/native_x11.c
@@ -23,7 +23,6 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
-#include <string.h>
 #include "util/u_debug.h"
 #include "util/u_memory.h"
 #include "util/u_string.h"
@@ -107,50 +106,38 @@ x11_get_probe_result(struct native_probe *nprobe)
 }
 
 static struct native_display *
-native_create_display(void *dpy, struct native_event_handler *event_handler)
+native_create_display(void *dpy, struct native_event_handler *event_handler,
+                      void *user_data)
 {
    struct native_display *ndpy = NULL;
    boolean force_sw;
 
    force_sw = debug_get_bool_option("EGL_SOFTWARE", FALSE);
-   if (!driver_descriptor.create_screen)
-      force_sw = TRUE;
-
    if (!force_sw) {
-      ndpy = x11_create_dri2_display((Display *) dpy, event_handler);
+      ndpy = x11_create_dri2_display((Display *) dpy,
+            event_handler, user_data);
    }
 
    if (!ndpy) {
       EGLint level = (force_sw) ? _EGL_INFO : _EGL_WARNING;
 
       _eglLog(level, "use software fallback");
-      ndpy = x11_create_ximage_display((Display *) dpy, event_handler);
+      ndpy = x11_create_ximage_display((Display *) dpy,
+            event_handler, user_data);
    }
 
    return ndpy;
 }
 
-static void
-x11_init_platform(struct native_platform *nplat)
-{
-   static char x11_name[32];
-
-   if (nplat->name)
-      return;
-
-   util_snprintf(x11_name, sizeof(x11_name), "X11/%s", driver_descriptor.name);
-
-   nplat->name = x11_name;
-   nplat->create_probe = x11_create_probe;
-   nplat->get_probe_result = x11_get_probe_result;
-   nplat->create_display = native_create_display;
-}
-
-static struct native_platform x11_platform;
+static const struct native_platform x11_platform = {
+   "X11", /* name */
+   x11_create_probe,
+   x11_get_probe_result,
+   native_create_display
+};
 
 const struct native_platform *
 native_get_x11_platform(void)
 {
-   x11_init_platform(&x11_platform);
    return &x11_platform;
 }
diff --git a/src/gallium/state_trackers/egl/x11/native_x11.h b/src/gallium/state_trackers/egl/x11/native_x11.h
index a1c32c3455..0b47837e1b 100644
--- a/src/gallium/state_trackers/egl/x11/native_x11.h
+++ b/src/gallium/state_trackers/egl/x11/native_x11.h
@@ -30,10 +30,12 @@
 
 struct native_display *
 x11_create_ximage_display(Display *dpy,
-                          struct native_event_handler *event_handler);
+                          struct native_event_handler *event_handler,
+                          void *user_data);
 
 struct native_display *
 x11_create_dri2_display(Display *dpy,
-                        struct native_event_handler *event_handler);
+                        struct native_event_handler *event_handler,
+                        void *user_data);
 
 #endif /* _NATIVE_X11_H_ */
diff --git a/src/gallium/state_trackers/egl/x11/native_ximage.c b/src/gallium/state_trackers/egl/x11/native_ximage.c
index ee10a04cfb..4b32f6e36e 100644
--- a/src/gallium/state_trackers/egl/x11/native_ximage.c
+++ b/src/gallium/state_trackers/egl/x11/native_ximage.c
@@ -442,7 +442,8 @@ ximage_display_destroy(struct native_display *ndpy)
 
 struct native_display *
 x11_create_ximage_display(Display *dpy,
-                          struct native_event_handler *event_handler)
+                          struct native_event_handler *event_handler,
+                          void *user_data)
 {
    struct ximage_display *xdpy;
    struct sw_winsys *winsys = NULL;
@@ -462,6 +463,7 @@ x11_create_ximage_display(Display *dpy,
    }
 
    xdpy->event_handler = event_handler;
+   xdpy->base.user_data = user_data;
 
    xdpy->xscr_number = DefaultScreen(xdpy->dpy);
    xdpy->xscr = x11_screen_create(xdpy->dpy, xdpy->xscr_number);
@@ -472,7 +474,8 @@ x11_create_ximage_display(Display *dpy,
    if (!winsys)
       goto fail;
 
-   xdpy->base.screen = native_create_sw_screen(winsys);
+   xdpy->base.screen =
+      xdpy->event_handler->new_sw_screen(&xdpy->base, winsys);
    if (!xdpy->base.screen)
       goto fail;