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authorMarek Olšák <marek.olsak@amd.com>2015-04-10 19:41:39 +0200
committerMarek Olšák <marek.olsak@amd.com>2015-04-30 14:38:38 +0200
commit7070b0dd66d315b3106803580623df4fb5223473 (patch)
tree31e1ba1375de9777fafe759625f5e116e478296a /src/gallium/state_trackers
parenta2557b30d843d4f3dada6a022f27e8343adabca8 (diff)
st/dri: implement the fence interface
Diffstat (limited to 'src/gallium/state_trackers')
-rw-r--r--src/gallium/state_trackers/dri/dri2.c80
1 files changed, 80 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/dri/dri2.c b/src/gallium/state_trackers/dri/dri2.c
index f8f4ecf36d7..9b5631326d4 100644
--- a/src/gallium/state_trackers/dri/dri2.c
+++ b/src/gallium/state_trackers/dri/dri2.c
@@ -1251,6 +1251,85 @@ static __DRIimageExtension dri2ImageExtension = {
.getCapabilities = dri2_get_capabilities,
};
+
+struct dri2_fence {
+ struct pipe_fence_handle *pipe_fence;
+};
+
+static void *
+dri2_create_fence(__DRIcontext *_ctx)
+{
+ struct pipe_context *ctx = dri_context(_ctx)->st->pipe;
+ struct dri2_fence *fence = CALLOC_STRUCT(dri2_fence);
+
+ if (!fence)
+ return NULL;
+
+ ctx->flush(ctx, &fence->pipe_fence, 0);
+
+ if (!fence->pipe_fence) {
+ FREE(fence);
+ return NULL;
+ }
+
+ return fence;
+}
+
+static void *
+dri2_get_fence_from_cl_event(__DRIscreen *_screen, intptr_t cl_event)
+{
+ return NULL;
+}
+
+static void
+dri2_destroy_fence(__DRIscreen *_screen, void *_fence)
+{
+ struct dri_screen *driscreen = dri_screen(_screen);
+ struct pipe_screen *screen = driscreen->base.screen;
+ struct dri2_fence *fence = (struct dri2_fence*)_fence;
+
+ if (fence->pipe_fence)
+ screen->fence_reference(screen, &fence->pipe_fence, NULL);
+ else
+ assert(0);
+
+ FREE(fence);
+}
+
+static GLboolean
+dri2_client_wait_sync(__DRIcontext *_ctx, void *_fence, unsigned flags,
+ uint64_t timeout)
+{
+ struct dri_screen *driscreen = dri_screen(_ctx->driScreenPriv);
+ struct pipe_screen *screen = driscreen->base.screen;
+ struct dri2_fence *fence = (struct dri2_fence*)_fence;
+
+ /* No need to flush. The context was flushed when the fence was created. */
+
+ if (fence->pipe_fence)
+ return screen->fence_finish(screen, fence->pipe_fence, timeout);
+ else {
+ assert(0);
+ return false;
+ }
+}
+
+static void
+dri2_server_wait_sync(__DRIcontext *_ctx, void *_fence, unsigned flags)
+{
+ /* AFAIK, no driver currently supports parallel context execution. */
+}
+
+static __DRI2fenceExtension dri2FenceExtension = {
+ .base = { __DRI2_FENCE, 1 },
+
+ .create_fence = dri2_create_fence,
+ .get_fence_from_cl_event = dri2_get_fence_from_cl_event,
+ .destroy_fence = dri2_destroy_fence,
+ .client_wait_sync = dri2_client_wait_sync,
+ .server_wait_sync = dri2_server_wait_sync
+};
+
/*
* Backend function init_screen.
*/
@@ -1262,6 +1341,7 @@ static const __DRIextension *dri_screen_extensions[] = {
&dri2RendererQueryExtension.base,
&dri2ConfigQueryExtension.base,
&dri2ThrottleExtension.base,
+ &dri2FenceExtension.base,
NULL
};