st/egl: Add wayland shm softpipe support

3 files changed, 191 insertions, 3 deletions

diff --git a/src/gallium/state_trackers/egl/wayland/native_shm.c b/src/gallium/state_trackers/egl/wayland/native_shm.c
new file mode 100644
index 00000000000..609fc0cd04a
--- /dev/null
+++ b/src/gallium/state_trackers/egl/wayland/native_shm.c
@@ -0,0 +1,174 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.11
+ *
+ * Copyright (C) 2011 Benjamin Franzke <[email protected]>
+ *
+ * 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.
+ */
+
+#include "util/u_memory.h"
+#include "util/u_inlines.h"
+
+#include "pipe/p_compiler.h"
+#include "pipe/p_screen.h"
+#include "pipe/p_context.h"
+#include "pipe/p_state.h"
+
+#include "sw/wayland/wayland_sw_winsys.h"
+
+#include "egllog.h"
+
+#include "native_wayland.h"
+
+#include <wayland-client.h>
+#include "wayland-egl-priv.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+struct wayland_shm_display {
+   struct wayland_display base;
+
+   struct native_event_handler *event_handler;
+   struct wl_shm *wl_shm;
+};
+
+static INLINE struct wayland_shm_display *
+wayland_shm_display(const struct native_display *ndpy)
+{
+   return (struct wayland_shm_display *) ndpy;
+}
+
+
+static void 
+wayland_shm_display_destroy(struct native_display *ndpy)
+{
+   struct wayland_shm_display *shmdpy = wayland_shm_display(ndpy);
+
+   if (shmdpy->base.config)
+      FREE(shmdpy->base.config);
+
+   ndpy_uninit(ndpy);
+
+   FREE(shmdpy);
+}
+
+
+static struct wl_buffer *
+wayland_create_shm_buffer(struct wayland_display *display,
+                          struct wayland_surface *surface,
+                          enum native_attachment attachment)
+{
+   struct wayland_shm_display *shmdpy = (struct wayland_shm_display *) display;
+   struct pipe_screen *screen = shmdpy->base.base.screen;
+   struct pipe_resource *resource;
+   struct winsys_handle wsh;
+   uint width, height;
+   struct wl_visual *visual;
+
+   resource = resource_surface_get_single_resource(surface->rsurf, attachment);
+   resource_surface_get_size(surface->rsurf, &width, &height);
+
+   screen->resource_get_handle(screen, resource, &wsh);
+
+   pipe_resource_reference(&resource, NULL);
+
+   switch (surface->type) {
+   case WL_WINDOW_SURFACE:
+      visual = surface->win->visual;
+      break;
+   case WL_PIXMAP_SURFACE:
+      visual = surface->pix->visual;
+      break;
+   default:
+      return NULL;
+   }
+
+   return wl_shm_create_buffer(shmdpy->wl_shm, wsh.fd,
+                               width, height,
+                               wsh.stride, visual);
+}
+
+static boolean
+wayland_shm_display_init_screen(struct native_display *ndpy)
+{
+   struct wayland_shm_display *shmdpy = wayland_shm_display(ndpy);
+   struct sw_winsys *winsys = NULL;
+   uint32_t id;
+
+   id = wl_display_get_global(shmdpy->base.dpy, "wl_shm", 1);
+   if (id == 0)
+      wl_display_iterate(shmdpy->base.dpy, WL_DISPLAY_READABLE);
+   id = wl_display_get_global(shmdpy->base.dpy, "wl_shm", 1);
+   if (id == 0)
+      return FALSE;
+
+   shmdpy->wl_shm = wl_shm_create(shmdpy->base.dpy, id, 1);
+   if (!shmdpy->wl_shm)
+      return FALSE;
+
+   winsys = wayland_create_sw_winsys(shmdpy->base.dpy);
+   if (!winsys)
+      return FALSE;
+
+   shmdpy->base.base.screen =
+      shmdpy->event_handler->new_sw_screen(&shmdpy->base.base, winsys);
+
+   if (!shmdpy->base.base.screen) {
+      _eglLog(_EGL_WARNING, "failed to create shm screen");
+      return FALSE;
+   }
+
+   return TRUE;
+}
+
+struct wayland_display *
+wayland_create_shm_display(struct wl_display *dpy,
+                           struct native_event_handler *event_handler,
+                           void *user_data)
+{
+   struct wayland_shm_display *shmdpy;
+
+   shmdpy = CALLOC_STRUCT(wayland_shm_display);
+   if (!shmdpy)
+      return NULL;
+
+   shmdpy->event_handler = event_handler;
+   shmdpy->base.base.user_data = user_data;
+
+   shmdpy->base.dpy = dpy;
+   if (!shmdpy->base.dpy) {
+      wayland_shm_display_destroy(&shmdpy->base.base);
+      return NULL;
+   }
+
+   if (!wayland_shm_display_init_screen(&shmdpy->base.base)) {
+      wayland_shm_display_destroy(&shmdpy->base.base);
+      return NULL;
+   }
+
+   shmdpy->base.base.destroy = wayland_shm_display_destroy;
+   shmdpy->base.create_buffer = wayland_create_shm_buffer;
+
+   return &shmdpy->base;
+}
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */
diff --git a/src/gallium/state_trackers/egl/wayland/native_wayland.c b/src/gallium/state_trackers/egl/wayland/native_wayland.c
index a684025d6b3..e7ed9d64b7e 100644
--- a/src/gallium/state_trackers/egl/wayland/native_wayland.c
+++ b/src/gallium/state_trackers/egl/wayland/native_wayland.c
@@ -456,9 +456,19 @@ native_create_display(void *dpy, boolean use_sw, void *user_data)
 {
    struct wayland_display *display = NULL;
 
-   display = wayland_create_drm_display((struct wl_display *) dpy,
-                                        wayland_event_handler,
-                                        user_data);
+   use_sw = use_sw || debug_get_bool_option("EGL_SOFTWARE", FALSE);
+
+   if (use_sw) {
+      _eglLog(_EGL_INFO, "use software fallback");
+      display = wayland_create_shm_display((struct wl_display *) dpy,
+                                           wayland_event_handler,
+                                           user_data);
+   } else {
+      display = wayland_create_drm_display((struct wl_display *) dpy,
+                                           wayland_event_handler,
+                                           user_data);
+   }
+
    if (!display)
       return NULL;
 
diff --git a/src/gallium/state_trackers/egl/wayland/native_wayland.h b/src/gallium/state_trackers/egl/wayland/native_wayland.h
index 5c034421f3d..e69a8f00f82 100644
--- a/src/gallium/state_trackers/egl/wayland/native_wayland.h
+++ b/src/gallium/state_trackers/egl/wayland/native_wayland.h
@@ -101,6 +101,10 @@ wayland_config(const struct native_config *nconf)
 }
 
 struct wayland_display *
+wayland_create_shm_display(struct wl_display *display,
+                           struct native_event_handler *event_handler,
+                           void *user_data);
+struct wayland_display *
 wayland_create_drm_display(struct wl_display *display,
                            struct native_event_handler *event_handler,
                            void *user_data);