1 files changed, 20 insertions, 11 deletions

diff --git a/src/gallium/drivers/nv50/nv50_transfer.c b/src/gallium/drivers/nv50/nv50_transfer.c
index 7c360e9e73..6d16c1354b 100644
--- a/src/gallium/drivers/nv50/nv50_transfer.c
+++ b/src/gallium/drivers/nv50/nv50_transfer.c
@@ -9,6 +9,7 @@
 struct nv50_transfer {
 	struct pipe_transfer base;
 	struct nouveau_bo *bo;
+	int map_refcnt;
 	unsigned level_offset;
 	unsigned level_tiling;
 	int level_pitch;
@@ -121,11 +122,12 @@ nv50_transfer_rect_m2mf(struct pipe_screen *pscreen,
 }
 
 static struct pipe_transfer *
-nv50_transfer_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
+nv50_transfer_new(struct pipe_context *pcontext, struct pipe_texture *pt,
 		  unsigned face, unsigned level, unsigned zslice,
 		  enum pipe_transfer_usage usage,
 		  unsigned x, unsigned y, unsigned w, unsigned h)
 {
+        struct pipe_screen *pscreen = pcontext->screen;
 	struct nouveau_device *dev = nouveau_screen(pscreen)->device;
 	struct nv50_miptree *mt = nv50_miptree(pt);
 	struct nv50_miptree_level *lvl = &mt->level[level];
@@ -186,7 +188,7 @@ nv50_transfer_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 }
 
 static void
-nv50_transfer_del(struct pipe_transfer *ptx)
+nv50_transfer_del(struct pipe_context *pcontext, struct pipe_transfer *ptx)
 {
 	struct nv50_transfer *tx = (struct nv50_transfer *)ptx;
 	struct nv50_miptree *mt = nv50_miptree(ptx->texture);
@@ -196,7 +198,7 @@ nv50_transfer_del(struct pipe_transfer *ptx)
 	unsigned ny = util_format_get_nblocksy(pt->format, tx->base.height);
 
 	if (ptx->usage & PIPE_TRANSFER_WRITE) {
-		struct pipe_screen *pscreen = pt->screen;
+		struct pipe_screen *pscreen = pcontext->screen;
 
 		nv50_transfer_rect_m2mf(pscreen, tx->bo, 0,
 					tx->base.stride, tx->bo->tile_mode,
@@ -218,38 +220,45 @@ nv50_transfer_del(struct pipe_transfer *ptx)
 }
 
 static void *
-nv50_transfer_map(struct pipe_screen *pscreen, struct pipe_transfer *ptx)
+nv50_transfer_map(struct pipe_context *pcontext, struct pipe_transfer *ptx)
 {
 	struct nv50_transfer *tx = (struct nv50_transfer *)ptx;
 	unsigned flags = 0;
 	int ret;
 
+	if (tx->map_refcnt++)
+		return tx->bo->map;
+
 	if (ptx->usage & PIPE_TRANSFER_WRITE)
 		flags |= NOUVEAU_BO_WR;
 	if (ptx->usage & PIPE_TRANSFER_READ)
 		flags |= NOUVEAU_BO_RD;
 
 	ret = nouveau_bo_map(tx->bo, flags);
-	if (ret)
+	if (ret) {
+		tx->map_refcnt = 0;
 		return NULL;
+	}
 	return tx->bo->map;
 }
 
 static void
-nv50_transfer_unmap(struct pipe_screen *pscreen, struct pipe_transfer *ptx)
+nv50_transfer_unmap(struct pipe_context *pcontext, struct pipe_transfer *ptx)
 {
 	struct nv50_transfer *tx = (struct nv50_transfer *)ptx;
 
+	if (--tx->map_refcnt)
+		return;
 	nouveau_bo_unmap(tx->bo);
 }
 
 void
-nv50_transfer_init_screen_functions(struct pipe_screen *pscreen)
+nv50_init_transfer_functions(struct nv50_context *nv50)
 {
-	pscreen->get_tex_transfer = nv50_transfer_new;
-	pscreen->tex_transfer_destroy = nv50_transfer_del;
-	pscreen->transfer_map = nv50_transfer_map;
-	pscreen->transfer_unmap = nv50_transfer_unmap;
+	nv50->pipe.get_tex_transfer = nv50_transfer_new;
+	nv50->pipe.tex_transfer_destroy = nv50_transfer_del;
+	nv50->pipe.transfer_map = nv50_transfer_map;
+	nv50->pipe.transfer_unmap = nv50_transfer_unmap;
 }
 
 void