From: Marek Olšák <marek.ol...@amd.com>
---
include/GL/internal/dri_interface.h | 60 +++++++++++++++++++++++++++++++++++++
1 file changed, 60 insertions(+)
diff --git a/include/GL/internal/dri_interface.h
b/include/GL/internal/dri_interface.h
index eb7da23..c827bb6 100644
--- a/include/GL/internal/dri_interface.h
+++ b/include/GL/internal/dri_interface.h
@@ -85,6 +85,7 @@ typedef struct __DRIdri2ExtensionRec
__DRIdri2Extension;
typedef struct __DRIdri2LoaderExtensionRec __DRIdri2LoaderExtension;
typedef struct __DRI2flushExtensionRec __DRI2flushExtension;
typedef struct __DRI2throttleExtensionRec __DRI2throttleExtension;
+typedef struct __DRI2fenceExtensionRec __DRI2fenceExtension;
typedef struct __DRIimageLoaderExtensionRec __DRIimageLoaderExtension;
@@ -339,6 +340,65 @@ struct __DRI2throttleExtensionRec {
enum __DRI2throttleReason reason);
};
+
+/**
+ * Extension for fences / synchronization objects.
+ */
+
+#define __DRI2_FENCE "DRI2_Fence"
+#define __DRI2_FENCE_VERSION 1
+
+#define __DRI2_FENCE_TIMEOUT_INFINITE 0xffffffffffffffffllu
+
+#define __DRI2_FENCE_FLAG_FLUSH_COMMANDS (1 << 0)
+
+struct __DRI2fenceExtensionRec {
+ __DRIextension base;
+
+ /**
+ * Create and insert a fence into the command stream of the context.
+ */
+ void *(*create_fence)(__DRIcontext *ctx);
+
+ /**
+ * Get a fence associated with the OpenCL event object.
+ * This can be NULL, meaning that OpenCL interoperability is not supported.
+ */
+ void *(*get_fence_from_cl_event)(__DRIscreen *screen, intptr_t cl_event);
+
+ /**
+ * Destroy a fence.
+ */
+ void (*destroy_fence)(__DRIscreen *screen, void *fence);
+
+ /**
+ * This function waits and doesn't return until the fence is signalled
+ * or the timeout expires. It returns true if the fence has been signaled.
+ *
+ * \param ctx the context where commands are flushed
+ * \param fence the fence
+ * \param flags a combination of __DRI2_FENCE_FLAG_xxx flags
+ * \param timeout the timeout in ns or __DRI2_FENCE_TIMEOUT_INFINITE
+ */
+ GLboolean (*client_wait_sync)(__DRIcontext *ctx, void *fence,
+ unsigned flags, uint64_t timeout);
+
+ /**
+ * This function enqueues a wait command into the command stream of
+ * the context and then returns. When the execution reaches the wait
+ * command, no further execution will be done in the context until
+ * the fence is signaled. This is a no-op if the device doesn't support
+ * parallel execution of contexts.
+ *
+ * \param ctx the context where the waiting is done
+ * \param fence the fence
+ * \param flags a combination of __DRI2_FENCE_FLAG_xxx flags that make
+ * sense with this function (right now there are none)
+ */
+ void (*server_wait_sync)(__DRIcontext *ctx, void *fence, unsigned flags);
+};
+
+
/*@}*/
/**
--
2.1.0
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