diff options
Diffstat (limited to 'src/gallium/winsys')
| -rw-r--r-- | src/gallium/winsys/egl_xlib/sw_winsys.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/src/gallium/winsys/egl_xlib/sw_winsys.c b/src/gallium/winsys/egl_xlib/sw_winsys.c index 0e71bdee9d..fd0cb9fb12 100644 --- a/src/gallium/winsys/egl_xlib/sw_winsys.c +++ b/src/gallium/winsys/egl_xlib/sw_winsys.c @@ -70,6 +70,15 @@ sw_pipe_buffer(struct pipe_buffer *b) } +/** + * Round n up to next multiple. + */ +static INLINE unsigned +round_up(unsigned n, unsigned multiple) +{ + return (n + multiple - 1) & ~(multiple - 1); +} + static const char * get_name(struct pipe_winsys *pws) @@ -168,6 +177,34 @@ surface_alloc(struct pipe_winsys *ws) } +static int +surface_alloc_storage(struct pipe_winsys *winsys, + struct pipe_surface *surf, + unsigned width, unsigned height, + enum pipe_format format, + unsigned flags, + unsigned tex_usage) +{ + const unsigned alignment = 64; + + surf->width = width; + surf->height = height; + surf->format = format; + surf->cpp = pf_get_size(format); + surf->pitch = round_up(width, alignment / surf->cpp); + surf->usage = flags; + + assert(!surf->buffer); + surf->buffer = winsys->buffer_create(winsys, alignment, + PIPE_BUFFER_USAGE_PIXEL, + surf->pitch * surf->cpp * height); + if(!surf->buffer) + return -1; + + return 0; +} + + static void surface_release(struct pipe_winsys *winsys, struct pipe_surface **s) { @@ -229,7 +266,7 @@ create_sw_winsys(void) ws->Base.buffer_destroy = buffer_destroy; ws->Base.surface_alloc = surface_alloc; - ws->Base.surface_alloc_storage = NULL; /* unused */ + ws->Base.surface_alloc_storage = surface_alloc_storage; ws->Base.surface_release = surface_release; ws->Base.fence_reference = fence_reference; |