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.

1 files changed, 54 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/egl/common/egl_g3d_loader.h b/src/gallium/state_trackers/egl/common/egl_g3d_loader.h
new file mode 100644
index 0000000000..c9141f8ad4
--- /dev/null
+++ b/src/gallium/state_trackers/egl/common/egl_g3d_loader.h
@@ -0,0 +1,54 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.9
+ *
+ * Copyright (C) 2010 LunarG Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Chia-I Wu <olv@lunarg.com>
+ */
+
+#ifndef _EGL_G3D_LOADER_H_
+#define _EGL_G3D_LOADER_H_
+
+#include "pipe/p_compiler.h"
+#include "state_tracker/st_api.h"
+#include "egltypedefs.h"
+
+struct pipe_screen;
+struct sw_winsys;
+
+struct egl_g3d_loader {
+   uint api_mask;
+   struct st_api *(*get_st_api)(enum st_api_type api);
+   struct st_api *(*guess_gl_api)(void);
+
+   struct pipe_screen *(*create_drm_screen)(const char *name, int fd);
+   struct pipe_screen *(*create_sw_screen)(struct sw_winsys *ws);
+};
+
+_EGLDriver *
+egl_g3d_create_driver(const struct egl_g3d_loader *loader);
+
+void
+egl_g3d_destroy_driver(_EGLDriver *drv);
+
+#endif /* _EGL_G3D_LOADER_H_ */