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egl: added surface_alloc_storage()

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This commit is contained in:
Brian Paul 2008-05-30 11:41:18 -06:00
parent 274dd381a3
commit 057ee55720
1 changed files with 38 additions and 1 deletions
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39
src/gallium/winsys/egl_xlib/sw_winsys.c
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@ -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;