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, 8 insertions, 7 deletions

diff --git a/src/gallium/drivers/nv50/nv50_miptree.c b/src/gallium/drivers/nv50/nv50_miptree.c
index 63a23d06b89..7770fcc3f2a 100644
--- a/src/gallium/drivers/nv50/nv50_miptree.c
+++ b/src/gallium/drivers/nv50/nv50_miptree.c
@@ -217,7 +217,6 @@ nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 {
 	struct nv50_miptree *mt = nv50_miptree(pt);
 	struct nv50_miptree_level *lvl = &mt->level[level];
-	struct nv50_surface *s;
 	struct pipe_surface *ps;
 	int img;
 
@@ -229,13 +228,11 @@ nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 	else
 		img = 0;
 
-	s = CALLOC_STRUCT(nv50_surface);
-	if (!s)
+	ps = CALLOC_STRUCT(pipe_surface);
+	if (!ps)
 		return NULL;
-	ps = &s->base;
-
-	ps->refcount = 1;
-	ps->winsys = pscreen->winsys;
+	pipe_texture_reference(&ps->texture, pt);
+	pipe_buffer_reference(pscreen, &ps->buffer, mt->buffer);
 	ps->format = pt->format;
 	ps->width = pt->width[level];
 	ps->height = pt->height[level];
@@ -245,6 +242,10 @@ nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 	ps->stride = ps->width * ps->block.size;
 	ps->usage = flags;
 	ps->status = PIPE_SURFACE_STATUS_DEFINED;
+	ps->refcount = 1;
+	ps->face = face;
+	ps->level = level;
+	ps->zslice = zslice;
 
 	if (flags & PIPE_BUFFER_USAGE_CPU_READ_WRITE) {
 		assert(!(flags & PIPE_BUFFER_USAGE_GPU_READ_WRITE));