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pipebuffer: Handle PIPE_BUFFER_USAGE_DONTBLOCK flag.

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Conflicts:

	src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.c
This commit is contained in:
José Fonseca 2009-03-02 17:35:28 +00:00
parent cfc3d5c219
commit fe64aa0c8e
1 changed files with 15 additions and 5 deletions
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20
src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.c
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@ -291,16 +291,26 @@ fenced_buffer_map(struct pb_buffer *buf,
unsigned flags)
{
struct fenced_buffer *fenced_buf = fenced_buffer(buf);
struct fenced_buffer_list *fenced_list = fenced_buf->list;
struct pipe_winsys *winsys = fenced_list->winsys;
void *map;
assert(!(flags & ~PIPE_BUFFER_USAGE_CPU_READ_WRITE));
flags &= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
assert(!(flags & PIPE_BUFFER_USAGE_GPU_READ_WRITE));
/* Serialize writes */
if((fenced_buf->flags & PIPE_BUFFER_USAGE_GPU_WRITE) ||
((fenced_buf->flags & PIPE_BUFFER_USAGE_GPU_READ) && (flags & PIPE_BUFFER_USAGE_CPU_WRITE))) {
/* Wait for the GPU to finish */
_fenced_buffer_finish(fenced_buf);
if(flags & PIPE_BUFFER_USAGE_DONTBLOCK) {
/* Don't wait for the GPU to finish writing */
if(winsys->fence_finish(winsys, fenced_buf->fence, 0) == 0)
_fenced_buffer_remove(fenced_list, fenced_buf);
else
return NULL;
}
else {
/* Wait for the GPU to finish writing */
_fenced_buffer_finish(fenced_buf);
}
}
#if 0
@ -314,7 +324,7 @@ fenced_buffer_map(struct pb_buffer *buf,
map = pb_map(fenced_buf->buffer, flags);
if(map) {
++fenced_buf->mapcount;
fenced_buf->flags |= flags;
fenced_buf->flags |= flags & PIPE_BUFFER_USAGE_CPU_READ_WRITE;
}
return map;