gallium: Remove the standalone surfaces.

This commit is mostly just a cosmetic change that cleans-up the interfaces,
replacing pipe_winsys::surface_* calls by

   /**
    * Allocate storage for a display target surface.
    *
    * Often surfaces which are meant to be blitted to the front screen (i.e.,
    * display targets) must be allocated with special characteristics, memory
    * pools, or obtained directly from the windowing system.
    *
    * This callback is invoked by the pipe_screenwhen creating a texture marked
    * with the PIPE_TEXTURE_USAGE_DISPLAY_TARGET flag  to get the underlying
    * buffer storage.
    */
   struct pipe_buffer *(*surface_buffer_create)(struct pipe_winsys *ws,
                                        unsigned width, unsigned height,
                                        enum pipe_format format,
                                        unsigned usage,
                                        unsigned *stride);

Most drivers were updated but not all were tested. Use the softpipe pipe
driver and the xlib winsys changes as a reference when fixing other drivers.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/gallium/drivers/nv10/nv10_miptree.c b/src/gallium/drivers/nv10/nv10_miptree.c
index 943f9e21e98..f8c021261bc 100644
--- a/src/gallium/drivers/nv10/nv10_miptree.c
+++ b/src/gallium/drivers/nv10/nv10_miptree.c
@@ -110,9 +110,10 @@ nv10_miptree_surface_get(struct pipe_screen *screen, struct pipe_texture *pt,
 	struct nv10_miptree *nv10mt = (struct nv10_miptree *)pt;
 	struct pipe_surface *ps;
 
-	ps = ws->surface_alloc(ws);
+	ps = CALLOC_STRUCT(pipe_surface);
 	if (!ps)
 		return NULL;
+	pipe_texture_reference(&ps->texture, pt);
 	pipe_buffer_reference(screen, &ps->buffer, nv10mt->buffer);
 	ps->format = pt->format;
 	ps->width = pt->width[level];
@@ -122,7 +123,6 @@ nv10_miptree_surface_get(struct pipe_screen *screen, struct pipe_texture *pt,
 	ps->nblocksy = pt->nblocksy[level];
 	ps->stride = nv10mt->level[level].pitch;
 	ps->refcount = 1;
-	ps->winsys = screen->winsys;
 
 	if (pt->target == PIPE_TEXTURE_CUBE) {
 		ps->offset = nv10mt->level[level].image_offset[face];