gallium: remove pipe_buffer from surfaces

this change disassociates, at least from the driver perspective,
the surface from buffer. surfaces are technically now views on the
textures so make it so by hiding the buffer in the internals of
textures.

2 files changed, 14 insertions, 9 deletions

diff --git a/src/gallium/drivers/softpipe/sp_texture.c b/src/gallium/drivers/softpipe/sp_texture.c
index 5952378152d..7af83981934 100644
--- a/src/gallium/drivers/softpipe/sp_texture.c
+++ b/src/gallium/drivers/softpipe/sp_texture.c
@@ -211,11 +211,9 @@ softpipe_get_tex_surface(struct pipe_screen *screen,
    assert(level <= pt->last_level);
 
    ps = CALLOC_STRUCT(pipe_surface);
-   ps->refcount = 1;
    if (ps) {
-      assert(ps->refcount);
+      ps->refcount = 1;
       pipe_texture_reference(&ps->texture, pt);
-      pipe_buffer_reference(screen, &ps->buffer, spt->buffer);
       ps->format = pt->format;
       ps->block = pt->block;
       ps->width = pt->width[level];
@@ -225,7 +223,7 @@ softpipe_get_tex_surface(struct pipe_screen *screen,
       ps->stride = spt->stride[level];
       ps->offset = spt->level_offset[level];
       ps->usage = usage;
-      
+
       /* Because we are softpipe, anything that the state tracker
        * thought was going to be done with the GPU will actually get
        * done with the CPU.  Let's adjust the flags to take that into
@@ -274,8 +272,7 @@ softpipe_tex_surface_release(struct pipe_screen *screen,
     */
    assert ((*s)->texture);
    if (--surf->refcount == 0) {
-      pipe_texture_reference(&surf->texture, NULL); 
-      pipe_buffer_reference(screen, &surf->buffer, NULL);
+      pipe_texture_reference(&surf->texture, NULL);
       FREE(surf);
    }
    *s = NULL;
@@ -288,13 +285,16 @@ softpipe_surface_map( struct pipe_screen *screen,
                       unsigned flags )
 {
    ubyte *map;
+   struct softpipe_texture *spt;
 
    if (flags & ~surface->usage) {
       assert(0);
       return NULL;
    }
 
-   map = pipe_buffer_map( screen, surface->buffer, flags );
+   assert(surface->texture);
+   spt = softpipe_texture(surface->texture);
+   map = pipe_buffer_map(screen, spt->buffer, flags);
    if (map == NULL)
       return NULL;
 
@@ -318,7 +318,12 @@ static void
 softpipe_surface_unmap(struct pipe_screen *screen,
                        struct pipe_surface *surface)
 {
-   pipe_buffer_unmap( screen, surface->buffer );
+   struct softpipe_texture *spt;
+
+   assert(surface->texture);
+   spt = softpipe_texture(surface->texture);
+
+   pipe_buffer_unmap( screen, spt->buffer );
 }
 
 
diff --git a/src/gallium/drivers/softpipe/sp_tile_cache.c b/src/gallium/drivers/softpipe/sp_tile_cache.c
index 78b0efa46d2..ab76009375c 100644
--- a/src/gallium/drivers/softpipe/sp_tile_cache.c
+++ b/src/gallium/drivers/softpipe/sp_tile_cache.c
@@ -369,7 +369,7 @@ sp_flush_tile_cache(struct softpipe_context *softpipe,
    struct pipe_surface *ps = tc->surface;
    int inuse = 0, pos;
 
-   if (ps && ps->buffer) {
+   if (ps) {
       /* caching a drawing surface */
       for (pos = 0; pos < NUM_ENTRIES; pos++) {
          struct softpipe_cached_tile *tile = tc->entries + pos;