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dri_interface: add an interface for fences

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This commit is contained in:
Marek Olšák 2015-04-10 10:43:26 +02:00
parent 396cbabbef
commit b02a5bf3ba
1 changed files with 60 additions and 0 deletions
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60
include/GL/internal/dri_interface.h
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@ -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);
};
/*@}*/
/**