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authorBrian Paul <brian.paul@tungstengraphics.com>2008-05-30 11:41:18 -0600
committerBrian Paul <brian.paul@tungstengraphics.com>2008-05-30 11:47:08 -0600
commit057ee55720faee0e1269937d70bbafe6df5c57e6 (patch)
tree009ca99f7ba66ad8ae964a0358c9f4a958e72946 /src/gallium/winsys/egl_xlib
parent274dd381a30072ecb8341cfc41e63bb6e39419ac (diff)
egl: added surface_alloc_storage()
Diffstat (limited to 'src/gallium/winsys/egl_xlib')
-rw-r--r--src/gallium/winsys/egl_xlib/sw_winsys.c39
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;