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dri: extend fence extension to support native fd fences

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Required to implement EGL_ANDROID_native_fence_sync.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
Tested-by: Rafael Antognolli <rafael.antognolli@intel.com>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Tested-by: Chad Versace <chadversary@chromium.org>
This commit is contained in:
Rob Clark 2016-11-18 08:39:32 -05:00 committed by Chad Versace
parent 2ba4c7e154
commit 21b1acfcfe
1 changed files with 43 additions and 1 deletions
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44
include/GL/internal/dri_interface.h
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@ -340,12 +340,19 @@ struct __DRI2throttleExtensionRec {
*/
#define __DRI2_FENCE "DRI2_Fence"
#define __DRI2_FENCE_VERSION 1
#define __DRI2_FENCE_VERSION 2
#define __DRI2_FENCE_TIMEOUT_INFINITE 0xffffffffffffffffllu
#define __DRI2_FENCE_FLAG_FLUSH_COMMANDS (1 << 0)
/**
* \name Capabilities that might be returned by __DRI2fenceExtensionRec::get_capabilities
*/
/*@{*/
#define __DRI_FENCE_CAP_NATIVE_FD 1
/*@}*/
struct __DRI2fenceExtensionRec {
__DRIextension base;
@ -390,6 +397,41 @@ struct __DRI2fenceExtensionRec {
* sense with this function (right now there are none)
*/
void (*server_wait_sync)(__DRIcontext *ctx, void *fence, unsigned flags);
/**
* Query for general capabilities of the driver that concern fences.
* Returns a bitmask of __DRI_FENCE_CAP_x
*
* \since 2
*/
unsigned (*get_capabilities)(__DRIscreen *screen);
/**
* Create an fd (file descriptor) associated fence. If the fence fd
* is -1, this behaves similarly to create_fence() except that when
* rendering is flushed the driver creates a fence fd. Otherwise,
* the driver wraps an existing fence fd.
*
* This is used to implement the EGL_ANDROID_native_fence_sync extension.
*
* \since 2
*
* \param ctx the context associated with the fence
* \param fd the fence fd or -1
*/
void *(*create_fence_fd)(__DRIcontext *ctx, int fd);
/**
* For fences created with create_fence_fd(), after rendering is flushed,
* this retrieves the native fence fd. Caller takes ownership of the
* fd and will close() it when it is no longer needed.
*
* \since 2
*
* \param screen the screen associated with the fence
* \param fence the fence
*/
int (*get_fence_fd)(__DRIscreen *screen, void *fence);
};