egl: refactor dri2_create_screen() into three separate functions

Split the create_screen into:
 - create screen
 - setup/bind extensions
 - setup screen

This will allow us to reuse the latter two on egl/drm. Said platform
does create its own screen and attempts to reinvent the later two
functions itself.

Since the GBM ones tend to get out of sync quite often, and there is no
distinct reason why it does so we'll drop them with latter commits.

v2: disp -> dpy for the Android platform.
v3: use correct goto label (Rob)

Signed-off-by: Emil Velikov <[email protected]>
Tested-by: Rob Herring <[email protected]>

6 files changed, 58 insertions, 19 deletions

diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index 1c3d00cf8c3..787c377c12e 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -694,14 +694,12 @@ dri2_setup_screen(_EGLDisplay *disp)
    }
 }
 
-/* All platforms but DRM call this function to create the screen, query the
- * dri extensions, setup the vtables and populate the driver_configs.
- * DRM inherits all that information from its display - GBM.
+/* All platforms but DRM call this function to create the screen and populate
+ * the driver_configs. DRM inherits that information from its display - GBM.
  */
 EGLBoolean
 dri2_create_screen(_EGLDisplay *disp)
 {
-   const __DRIextension **extensions;
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
 
    if (dri2_dpy->image_driver) {
@@ -744,27 +742,28 @@ dri2_create_screen(_EGLDisplay *disp)
    }
 
    dri2_dpy->own_dri_screen = 1;
+   return EGL_TRUE;
+}
+
+EGLBoolean
+dri2_setup_extensions(_EGLDisplay *disp)
+{
+   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
+   const struct dri2_extension_match *mandatory_core_extensions;
+   const __DRIextension **extensions;
 
    extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
 
-   if (dri2_dpy->image_driver || dri2_dpy->dri2) {
-      if (!dri2_bind_extensions(dri2_dpy, dri2_core_extensions, extensions, false))
-         goto cleanup_dri_screen;
-   } else {
-      assert(dri2_dpy->swrast);
-      if (!dri2_bind_extensions(dri2_dpy, swrast_core_extensions, extensions, false))
-         goto cleanup_dri_screen;
-   }
+   if (dri2_dpy->image_driver || dri2_dpy->dri2)
+      mandatory_core_extensions = dri2_core_extensions;
+   else
+      mandatory_core_extensions = swrast_core_extensions;
 
-   dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
-   dri2_setup_screen(disp);
+   if (!dri2_bind_extensions(dri2_dpy, mandatory_core_extensions, extensions, false))
+      return EGL_FALSE;
 
+   dri2_bind_extensions(dri2_dpy, optional_core_extensions, extensions, true);
    return EGL_TRUE;
-
- cleanup_dri_screen:
-   dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
-
-   return EGL_FALSE;
 }
 
 /**
diff --git a/src/egl/drivers/dri2/egl_dri2.h b/src/egl/drivers/dri2/egl_dri2.h
index c9c064b23fe..a71b4489cde 100644
--- a/src/egl/drivers/dri2/egl_dri2.h
+++ b/src/egl/drivers/dri2/egl_dri2.h
@@ -365,6 +365,9 @@ dri2_load_driver_dri3(_EGLDisplay *disp);
 EGLBoolean
 dri2_create_screen(_EGLDisplay *disp);
 
+EGLBoolean
+dri2_setup_extensions(_EGLDisplay *disp);
+
 __DRIdrawable *
 dri2_surface_get_dri_drawable(_EGLSurface *surf);
 
diff --git a/src/egl/drivers/dri2/platform_android.c b/src/egl/drivers/dri2/platform_android.c
index 42820c9793a..8384cab3904 100644
--- a/src/egl/drivers/dri2/platform_android.c
+++ b/src/egl/drivers/dri2/platform_android.c
@@ -1153,6 +1153,11 @@ dri2_initialize_android(_EGLDriver *drv, _EGLDisplay *dpy)
       goto cleanup;
    }
 
+   if (!dri2_setup_extensions(dpy))
+      goto cleanup;
+
+   dri2_setup_screen(dpy);
+
    if (!droid_add_configs_for_visuals(drv, dpy)) {
       err = "DRI2: failed to add configs";
       goto cleanup;
diff --git a/src/egl/drivers/dri2/platform_surfaceless.c b/src/egl/drivers/dri2/platform_surfaceless.c
index f001eda369c..df46099c242 100644
--- a/src/egl/drivers/dri2/platform_surfaceless.c
+++ b/src/egl/drivers/dri2/platform_surfaceless.c
@@ -320,6 +320,13 @@ dri2_initialize_surfaceless(_EGLDriver *drv, _EGLDisplay *disp)
       goto cleanup;
    }
 
+   if (!dri2_setup_extensions(disp)) {
+      err = "DRI2: failed to find required DRI extensions";
+      goto cleanup;
+   }
+
+   dri2_setup_screen(disp);
+
    if (!surfaceless_add_configs_for_visuals(drv, disp)) {
       err = "DRI2: failed to add configs";
       goto cleanup;
diff --git a/src/egl/drivers/dri2/platform_wayland.c b/src/egl/drivers/dri2/platform_wayland.c
index 325a2e4beea..174cfeeb7e9 100644
--- a/src/egl/drivers/dri2/platform_wayland.c
+++ b/src/egl/drivers/dri2/platform_wayland.c
@@ -1226,6 +1226,11 @@ dri2_initialize_wayland_drm(_EGLDriver *drv, _EGLDisplay *disp)
    if (!dri2_create_screen(disp))
       goto cleanup;
 
+   if (!dri2_setup_extensions(disp))
+      goto cleanup;
+
+   dri2_setup_screen(disp);
+
    dri2_wl_setup_swap_interval(dri2_dpy);
 
    /* To use Prime, we must have _DRI_IMAGE v7 at least.
@@ -1838,6 +1843,11 @@ dri2_initialize_wayland_swrast(_EGLDriver *drv, _EGLDisplay *disp)
    if (!dri2_create_screen(disp))
       goto cleanup;
 
+   if (!dri2_setup_extensions(disp))
+      goto cleanup;
+
+   dri2_setup_screen(disp);
+
    dri2_wl_setup_swap_interval(dri2_dpy);
 
    if (!dri2_wl_add_configs_for_visuals(drv, disp)) {
diff --git a/src/egl/drivers/dri2/platform_x11.c b/src/egl/drivers/dri2/platform_x11.c
index c512448952d..d15c1ce9274 100644
--- a/src/egl/drivers/dri2/platform_x11.c
+++ b/src/egl/drivers/dri2/platform_x11.c
@@ -1252,6 +1252,11 @@ dri2_initialize_x11_swrast(_EGLDriver *drv, _EGLDisplay *disp)
    if (!dri2_create_screen(disp))
       goto cleanup;
 
+   if (!dri2_setup_extensions(disp))
+      goto cleanup;
+
+   dri2_setup_screen(disp);
+
    if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp, true))
       goto cleanup;
 
@@ -1349,6 +1354,11 @@ dri2_initialize_x11_dri3(_EGLDriver *drv, _EGLDisplay *disp)
    if (!dri2_create_screen(disp))
       goto cleanup;
 
+   if (!dri2_setup_extensions(disp))
+      goto cleanup;
+
+   dri2_setup_screen(disp);
+
    dri2_x11_setup_swap_interval(dri2_dpy);
 
    if (!dri2_dpy->is_different_gpu)
@@ -1444,6 +1454,11 @@ dri2_initialize_x11_dri2(_EGLDriver *drv, _EGLDisplay *disp)
    if (!dri2_create_screen(disp))
       goto cleanup;
 
+   if (!dri2_setup_extensions(disp))
+      goto cleanup;
+
+   dri2_setup_screen(disp);
+
    dri2_x11_setup_swap_interval(dri2_dpy);
 
    disp->Extensions.KHR_image_pixmap = EGL_TRUE;