egl/x11: Implement dri3 support with loader's dri3 helper

v2: From Martin Peres
 - Tell we are compiling the dri3 backend in configure.ac
 - Update the Makefile.am
 - get rid of the LIBDRM_HAS_RENDERNODE_SUPPORT macro
 - fix some warnings related to EGLuint64KHR to int64_t conversions
 - use dri2_get_dri_config to get the __DRIconfig instead of open-coding it
 - replace the occasional tabs with spaces

v3: From Martin Peres
 - fix and indent problem (Matt Turner)
 - drop the authenticate function, use NULL in the vtable instead (Emil)
 - drop some useless includes (Emil Velikov)
 - mandate libdrm (Emil Velikov)
 - link to xcb-dri3 (Kristian Høgsberg)
 - convert to the new loader interface for drwable (Kristian)
 - remove some dead code after the dropping of some vfuncs (Kristian)
 - add a comment on the topic of rendering to the frontbuffer

v4: From Martin Peres
 - do not expose the preserved swap behavior (Acked by Eric Anholt)

Signed-off-by: Boyan Ding <[email protected]>
Signed-off-by: Martin Peres <[email protected]>
Reviewed-by: Kristian Høgsberg <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>

1 files changed, 13 insertions, 1 deletions

diff --git a/src/egl/drivers/dri2/egl_dri2.h b/src/egl/drivers/dri2/egl_dri2.h
index c3c9fc0166c..52ad92b182d 100644
--- a/src/egl/drivers/dri2/egl_dri2.h
+++ b/src/egl/drivers/dri2/egl_dri2.h
@@ -35,6 +35,10 @@
 #include <xcb/dri2.h>
 #include <xcb/xfixes.h>
 #include <X11/Xlib-xcb.h>
+
+#ifdef HAVE_DRI3
+#include "loader_dri3_helper.h"
+#endif
 #endif
 
 #ifdef HAVE_WAYLAND_PLATFORM
@@ -160,6 +164,7 @@ struct dri2_egl_display
    const __DRIconfig       **driver_configs;
    void                     *driver;
    const __DRIcoreExtension       *core;
+   const __DRIimageDriverExtension *image_driver;
    const __DRIdri2Extension       *dri2;
    const __DRIswrastExtension     *swrast;
    const __DRI2flushExtension     *flush;
@@ -192,6 +197,9 @@ struct dri2_egl_display
 #ifdef HAVE_X11_PLATFORM
    xcb_connection_t         *conn;
    int                      screen;
+#ifdef HAVE_DRI3
+   struct loader_dri3_extensions loader_dri3_ext;
+#endif
 #endif
 
 #ifdef HAVE_WAYLAND_PLATFORM
@@ -205,8 +213,9 @@ struct dri2_egl_display
    int			     formats;
    uint32_t                  capabilities;
    int			     is_render_node;
-   int			     is_different_gpu;
 #endif
+
+   int			     is_different_gpu;
 };
 
 struct dri2_egl_context
@@ -327,6 +336,9 @@ EGLBoolean
 dri2_load_driver_swrast(_EGLDisplay *disp);
 
 EGLBoolean
+dri2_load_driver_dri3(_EGLDisplay *disp);
+
+EGLBoolean
 dri2_create_screen(_EGLDisplay *disp);
 
 __DRIdrawable *