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.

12 files changed, 42 insertions, 121 deletions

diff --git a/src/gallium/drivers/i915simple/i915_texture.c b/src/gallium/drivers/i915simple/i915_texture.c
index 2f5459af67..af823f2d3c 100644
--- a/src/gallium/drivers/i915simple/i915_texture.c
+++ b/src/gallium/drivers/i915simple/i915_texture.c
@@ -683,7 +683,6 @@ i915_get_tex_surface(struct pipe_screen *screen,
    ps = CALLOC_STRUCT(pipe_surface);
    if (ps) {
       ps->refcount = 1;
-      ps->winsys = ws;
       pipe_texture_reference(&ps->texture, pt);
       pipe_buffer_reference(screen, &ps->buffer, tex->buffer);
       ps->format = pt->format;
diff --git a/src/gallium/drivers/i965simple/brw_tex_layout.c b/src/gallium/drivers/i965simple/brw_tex_layout.c
index cc0c665e02..12e2e02cfd 100644
--- a/src/gallium/drivers/i965simple/brw_tex_layout.c
+++ b/src/gallium/drivers/i965simple/brw_tex_layout.c
@@ -365,10 +365,10 @@ brw_get_tex_surface_screen(struct pipe_screen *screen,
       assert(zslice == 0);
    }
 
-   ps = ws->surface_alloc(ws);
+   ps = CALLOC_STRUCT(pipe_surface);
    if (ps) {
-      assert(ps->format);
-      assert(ps->refcount);
+      ps->refcount = 1;
+      pipe_texture_reference(&ps->texture, pt);
       winsys_buffer_reference(ws, &ps->buffer, tex->buffer);
       ps->format = pt->format;
       ps->width = pt->width[level];
@@ -378,6 +378,7 @@ brw_get_tex_surface_screen(struct pipe_screen *screen,
       ps->nblocksy = pt->nblocksy[level];
       ps->stride = tex->stride;
       ps->offset = offset;
+      ps->status = PIPE_SURFACE_STATUS_DEFINED;
    }
    return ps;
 }
diff --git a/src/gallium/drivers/nv04/nv04_miptree.c b/src/gallium/drivers/nv04/nv04_miptree.c
index 0cbb91e187..094c38256b 100644
--- a/src/gallium/drivers/nv04/nv04_miptree.c
+++ b/src/gallium/drivers/nv04/nv04_miptree.c
@@ -96,13 +96,12 @@ nv04_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 	struct nv04_miptree *nv04mt = (struct nv04_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(pscreen, &ps->buffer, nv04mt->buffer);
 	ps->format = pt->format;
-		ps->width = pt->width[level];
-	ps->height = pt->height[level];
 	ps->block = pt->block;
 	ps->width = pt->width[level];
 	ps->height = pt->height[level];
@@ -110,7 +109,6 @@ nv04_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 	ps->nblocksy = pt->nblocksy[level];
 	ps->stride = nv04mt->level[level].pitch;
 	ps->refcount = 1;
-	ps->winsys = pscreen->winsys;
 
 	if (pt->target == PIPE_TEXTURE_CUBE) {
 		ps->offset = nv04mt->level[level].image_offset[face];
diff --git a/src/gallium/drivers/nv10/nv10_miptree.c b/src/gallium/drivers/nv10/nv10_miptree.c
index 943f9e21e9..f8c021261b 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];
diff --git a/src/gallium/drivers/nv20/nv20_miptree.c b/src/gallium/drivers/nv20/nv20_miptree.c
index c6106d58c4..d2038c391d 100644
--- a/src/gallium/drivers/nv20/nv20_miptree.c
+++ b/src/gallium/drivers/nv20/nv20_miptree.c
@@ -117,7 +117,6 @@ nv20_miptree_surface_get(struct pipe_screen *screen, struct pipe_texture *pt,
 	ps->usage = flags;
 	ps->status = PIPE_SURFACE_STATUS_DEFINED;
 	ps->refcount = 1;
-	ps->winsys = screen->winsys;
 
 	if (pt->target == PIPE_TEXTURE_CUBE) {
 		ps->offset = nv20mt->level[level].image_offset[face];
diff --git a/src/gallium/drivers/nv30/nv30_miptree.c b/src/gallium/drivers/nv30/nv30_miptree.c
index 37d297cc0f..54fb3585f8 100644
--- a/src/gallium/drivers/nv30/nv30_miptree.c
+++ b/src/gallium/drivers/nv30/nv30_miptree.c
@@ -154,7 +154,6 @@ nv30_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 	ps->usage = flags;
 	ps->status = PIPE_SURFACE_STATUS_DEFINED;
 	ps->refcount = 1;
-	ps->winsys = pscreen->winsys;
 	ps->face = face;
 	ps->level = level;
 	ps->zslice = zslice;
diff --git a/src/gallium/drivers/nv40/nv40_miptree.c b/src/gallium/drivers/nv40/nv40_miptree.c
index 00ce6be985..ba912ddcbb 100644
--- a/src/gallium/drivers/nv40/nv40_miptree.c
+++ b/src/gallium/drivers/nv40/nv40_miptree.c
@@ -155,7 +155,6 @@ nv40_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 	ps->usage = flags;
 	ps->status = PIPE_SURFACE_STATUS_DEFINED;
 	ps->refcount = 1;
-	ps->winsys = pscreen->winsys;
 	ps->face = face;
 	ps->level = level;
 	ps->zslice = zslice;
diff --git a/src/gallium/drivers/nv50/nv50_miptree.c b/src/gallium/drivers/nv50/nv50_miptree.c
index 63a23d06b8..7770fcc3f2 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));
diff --git a/src/gallium/drivers/softpipe/sp_texture.c b/src/gallium/drivers/softpipe/sp_texture.c
index a64dc89f43..faf9e871f9 100644
--- a/src/gallium/drivers/softpipe/sp_texture.c
+++ b/src/gallium/drivers/softpipe/sp_texture.c
@@ -94,49 +94,23 @@ softpipe_texture_layout(struct pipe_screen *screen,
    return spt->buffer != NULL;
 }
 
-/* Hack it up to use the old winsys->surface_alloc_storage()
- * method for now:
- */
 static boolean
 softpipe_displaytarget_layout(struct pipe_screen *screen,
                               struct softpipe_texture * spt)
 {
    struct pipe_winsys *ws = screen->winsys;
-   struct pipe_surface surf;
-   unsigned flags = (PIPE_BUFFER_USAGE_CPU_READ |
-                     PIPE_BUFFER_USAGE_CPU_WRITE |
-                     PIPE_BUFFER_USAGE_GPU_READ |
-                     PIPE_BUFFER_USAGE_GPU_WRITE);
-   int ret;
-
-
-   memset(&surf, 0, sizeof(surf));
-
-   ret =ws->surface_alloc_storage( ws, 
-                                   &surf,
-                                   spt->base.width[0], 
-                                   spt->base.height[0],
-                                   spt->base.format,
-                                   flags,
-                                   spt->base.tex_usage);
-   if(ret != 0)
-      return FALSE;
-
-   if (!surf.buffer) {
-      /* allocation failed */
-      return FALSE;
-   }
+   unsigned usage = (PIPE_BUFFER_USAGE_CPU_READ_WRITE |
+                     PIPE_BUFFER_USAGE_GPU_READ_WRITE);
 
-   /* Now extract the goodies: 
-    */
    spt->base.nblocksx[0] = pf_get_nblocksx(&spt->base.block, spt->base.width[0]);  
    spt->base.nblocksy[0] = pf_get_nblocksy(&spt->base.block, spt->base.height[0]);  
-   spt->stride[0] = surf.stride;
 
-   /* Transfer the reference:
-    */
-   spt->buffer = surf.buffer;
-   surf.buffer = NULL;
+   spt->buffer = ws->surface_buffer_create( ws, 
+                                           spt->base.width[0], 
+                                           spt->base.height[0],
+                                           spt->base.format,
+                                           usage,
+                                           &spt->stride[0]);
 
    return spt->buffer != NULL;
 }
@@ -231,7 +205,6 @@ softpipe_get_tex_surface(struct pipe_screen *screen,
                          unsigned face, unsigned level, unsigned zslice,
                          unsigned usage)
 {
-   struct pipe_winsys *ws = screen->winsys;
    struct softpipe_texture *spt = softpipe_texture(pt);
    struct pipe_surface *ps;
 
diff --git a/src/gallium/drivers/softpipe/sp_texture.h b/src/gallium/drivers/softpipe/sp_texture.h
index bf437a7c61..c1636920cd 100644
--- a/src/gallium/drivers/softpipe/sp_texture.h
+++ b/src/gallium/drivers/softpipe/sp_texture.h
@@ -42,7 +42,7 @@ struct softpipe_texture
    struct pipe_texture base;
 
    unsigned long level_offset[PIPE_MAX_TEXTURE_LEVELS];
-   unsigned long stride[PIPE_MAX_TEXTURE_LEVELS];
+   unsigned stride[PIPE_MAX_TEXTURE_LEVELS];
 
    /* The data is held here:
     */
diff --git a/src/gallium/drivers/trace/tr_texture.c b/src/gallium/drivers/trace/tr_texture.c
index 440a78704a..1cc4f0bd43 100644
--- a/src/gallium/drivers/trace/tr_texture.c
+++ b/src/gallium/drivers/trace/tr_texture.c
@@ -87,7 +87,6 @@ trace_surface_create(struct trace_texture *tr_tex,
    
    memcpy(&tr_surf->base, surface, sizeof(struct pipe_surface));
    
-   tr_surf->base.winsys = tr_tex->base.screen->winsys;
    tr_surf->base.texture = NULL;
    pipe_texture_reference(&tr_surf->base.texture, &tr_tex->base);
    tr_surf->surface = surface;
diff --git a/src/gallium/drivers/trace/tr_winsys.c b/src/gallium/drivers/trace/tr_winsys.c
index 177835854e..c4148fe810 100644
--- a/src/gallium/drivers/trace/tr_winsys.c
+++ b/src/gallium/drivers/trace/tr_winsys.c
@@ -98,86 +98,41 @@ trace_winsys_flush_frontbuffer(struct pipe_winsys *_winsys,
 }
 
 
-static struct pipe_surface *
-trace_winsys_surface_alloc(struct pipe_winsys *_winsys)
-{
-   struct trace_winsys *tr_ws = trace_winsys(_winsys);
-   struct pipe_winsys *winsys = tr_ws->winsys;
-   struct pipe_surface *result;
-   
-   trace_dump_call_begin("pipe_winsys", "surface_alloc");
-   
-   trace_dump_arg(ptr, winsys);
-
-   result = winsys->surface_alloc(winsys);
-   
-   trace_dump_ret(ptr, result);
-   
-   trace_dump_call_end();
-   
-   assert(!result || !result->texture);
-
-   return result;
-}
-
-
-static int
-trace_winsys_surface_alloc_storage(struct pipe_winsys *_winsys,
-                                   struct pipe_surface *surface,
+static struct pipe_buffer *
+trace_winsys_surface_buffer_create(struct pipe_winsys *_winsys,
                                    unsigned width, unsigned height,
                                    enum pipe_format format,
-                                   unsigned flags,
-                                   unsigned tex_usage)
+                                   unsigned usage,
+                                   unsigned *pstride)
 {
    struct trace_winsys *tr_ws = trace_winsys(_winsys);
    struct pipe_winsys *winsys = tr_ws->winsys;
-   int result;
+   unsigned stride;
+   struct pipe_buffer *result;
    
-   assert(surface && !surface->texture);
-
-   trace_dump_call_begin("pipe_winsys", "surface_alloc_storage");
+   trace_dump_call_begin("pipe_winsys", "surface_buffer_create");
    
    trace_dump_arg(ptr, winsys);
-   trace_dump_arg(ptr, surface);
    trace_dump_arg(uint, width);
    trace_dump_arg(uint, height);
    trace_dump_arg(format, format);
-   trace_dump_arg(uint, flags);
-   trace_dump_arg(uint, tex_usage);
+   trace_dump_arg(uint, usage);
 
-   result = winsys->surface_alloc_storage(winsys,
-                                          surface,
+   result = winsys->surface_buffer_create(winsys,
                                           width, height,
                                           format,
-                                          flags,
-                                          tex_usage);
+                                          usage,
+                                          pstride);
    
-   trace_dump_ret(int, result);
+   stride = *pstride;
    
-   trace_dump_call_end();
+   trace_dump_arg(uint, stride);
    
-   return result;
-}
-
-
-static void
-trace_winsys_surface_release(struct pipe_winsys *_winsys, 
-                             struct pipe_surface **psurface)
-{
-   struct trace_winsys *tr_ws = trace_winsys(_winsys);
-   struct pipe_winsys *winsys = tr_ws->winsys;
-   struct pipe_surface *surface = *psurface;
-   
-   assert(psurface && *psurface && !(*psurface)->texture);
-   
-   trace_dump_call_begin("pipe_winsys", "surface_release");
-   
-   trace_dump_arg(ptr, winsys);
-   trace_dump_arg(ptr, surface);
-
-   winsys->surface_release(winsys, psurface);
+   trace_dump_ret(ptr, result);
    
    trace_dump_call_end();
+   
+   return result;
 }
 
 
@@ -465,9 +420,7 @@ trace_winsys_create(struct pipe_winsys *winsys)
    tr_ws->base.destroy = trace_winsys_destroy;
    tr_ws->base.get_name = trace_winsys_get_name;
    tr_ws->base.flush_frontbuffer = trace_winsys_flush_frontbuffer;
-   tr_ws->base.surface_alloc = trace_winsys_surface_alloc;
-   tr_ws->base.surface_alloc_storage = trace_winsys_surface_alloc_storage;
-   tr_ws->base.surface_release = trace_winsys_surface_release;
+   tr_ws->base.surface_buffer_create = trace_winsys_surface_buffer_create;
    tr_ws->base.buffer_create = trace_winsys_buffer_create;
    tr_ws->base.user_buffer_create = trace_winsys_user_buffer_create;
    tr_ws->base.buffer_map = trace_winsys_buffer_map;