diff options
Diffstat (limited to 'src/gallium/winsys/svga/drm/vmw_surface.c')
-rw-r--r-- | src/gallium/winsys/svga/drm/vmw_surface.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/gallium/winsys/svga/drm/vmw_surface.c b/src/gallium/winsys/svga/drm/vmw_surface.c new file mode 100644 index 0000000000..5f1b9ad577 --- /dev/null +++ b/src/gallium/winsys/svga/drm/vmw_surface.c @@ -0,0 +1,61 @@ +/********************************************************** + * Copyright 2009 VMware, Inc. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + **********************************************************/ + + +#include "svga_cmd.h" +#include "util/u_debug.h" +#include "util/u_memory.h" + +#include "vmw_surface.h" +#include "vmw_screen.h" + +void +vmw_svga_winsys_surface_reference(struct vmw_svga_winsys_surface **pdst, + struct vmw_svga_winsys_surface *src) +{ + struct pipe_reference *src_ref; + struct pipe_reference *dst_ref; + struct vmw_svga_winsys_surface *dst; + + if(pdst == NULL || *pdst == src) + return; + + dst = *pdst; + + src_ref = src ? &src->refcnt : NULL; + dst_ref = dst ? &dst->refcnt : NULL; + + if (pipe_reference(dst_ref, src_ref)) { + vmw_ioctl_surface_destroy(dst->screen, dst->sid); +#ifdef DEBUG + /* to detect dangling pointers */ + assert(p_atomic_read(&dst->validated) == 0); + dst->sid = SVGA3D_INVALID_ID; +#endif + FREE(dst); + } + + *pdst = src; +} |