Acquire an image frame from the EGLStream with CUDA as a consumer.

conn

- Connection on which to acquire

pCudaResource

- CUDA resource on which the stream frame will be mapped for use.

pStream

- CUDA stream for synchronization and any data migrations implied by CUeglResourceLocationFlags.

timeout

- Desired timeout in usec for a new frame to be acquired. If set as CUDA_EGL_INFINITE_TIMEOUT, acquire waits infinitely. After timeout occurs CUDA consumer tries to acquire an old frame if available and EGL_SUPPORT_REUSE_NV flag is set.

Connect CUDA to EGLStream as a consumer.

conn

- Pointer to the returned connection handle

stream

- EGLStreamKHR handle

Connect CUDA to EGLStream as a consumer with given flags.

conn

- Pointer to the returned connection handle

stream

- EGLStreamKHR handle

flags

- Flags denote intended location - system or video.

Disconnect CUDA as a consumer to EGLStream .

conn

- Conection to disconnect.

Releases the last frame acquired from the EGLStream.

conn

- Connection on which to release

pCudaResource

- CUDA resource whose corresponding frame is to be released

pStream

- CUDA stream on which release will be done.

Connect CUDA to EGLStream as a producer.

conn

- Pointer to the returned connection handle

stream

- EGLStreamKHR handle

width

- width of the image to be submitted to the stream

height

- height of the image to be submitted to the stream

Disconnect CUDA as a producer to EGLStream .

conn

- Conection to disconnect.

Present a CUDA eglFrame to the EGLStream with CUDA as a producer.

conn

- Connection on which to present the CUDA array

eglframe

- CUDA Eglstream Proucer Frame handle to be sent to the consumer over EglStream.

pStream

- CUDA stream on which to present the frame.

Return the CUDA eglFrame to the EGLStream released by the consumer.

conn

- Connection on which to return

eglframe

- CUDA Eglstream Proucer Frame handle returned from the consumer over EglStream.

pStream

- CUDA stream on which to return the frame.

Creates an event from EGLSync object.

phEvent

- Returns newly created event

eglSync

- Opaque handle to EGLSync object

flags

- Event creation flags

Creates an event *phEvent from an EGLSyncKHR eglSync with the flags specified via flags. Valid flags include:

• CU_EVENT_DEFAULT: Default event creation flag.

• CU_EVENT_BLOCKING_SYNC: Specifies that the created event should use blocking synchronization. A CPU thread that uses cuEventSynchronize() to wait on an event created with this flag will block until the event has actually been completed.

Once the eglSync gets destroyed, cuEventDestroy is the only API that can be invoked on the event.

cuEventRecord and TimingData are not supported for events created from EGLSync.

The EGLSyncKHR is an opaque handle to an EGL sync object. typedef void* EGLSyncKHR

See also:

cuEventQuery, cuEventSynchronize, cuEventDestroy

Registers an EGL image.

pCudaResource

- Pointer to the returned object handle

image

- An EGLImageKHR image which can be used to create target resource.

flags

- Map flags

Registers the EGLImageKHR specified by image for access by CUDA. A handle to the registered object is returned as pCudaResource. Additional Mapping/Unmapping is not required for the registered resource and cuGraphicsResourceGetMappedEglFrame can be directly called on the pCudaResource.

The application will be responsible for synchronizing access to shared objects. The application must ensure that any pending operation which access the objects have completed before passing control to CUDA. This may be accomplished by issuing and waiting for glFinish command on all GLcontexts (for OpenGL and likewise for other APIs). The application will be also responsible for ensuring that any pending operation on the registered CUDA resource has completed prior to executing subsequent commands in other APIs accesing the same memory objects. This can be accomplished by calling cuCtxSynchronize or cuEventSynchronize (preferably).

The surface's intended usage is specified using flags, as follows:

• CU_GRAPHICS_MAP_RESOURCE_FLAGS_NONE: Specifies no hints about how this resource will be used. It is therefore assumed that this resource will be read from and written to by CUDA. This is the default value.

• CU_GRAPHICS_MAP_RESOURCE_FLAGS_READ_ONLY: Specifies that CUDA will not write to this resource.

• CU_GRAPHICS_MAP_RESOURCE_FLAGS_WRITE_DISCARD: Specifies that CUDA will not read from this resource and will write over the entire contents of the resource, so none of the data previously stored in the resource will be preserved.

The EGLImageKHR is an object which can be used to create EGLImage target resource. It is defined as a void pointer. typedef void* EGLImageKHR

See also:

cuGraphicsEGLRegisterImage, cuGraphicsUnregisterResource, cuGraphicsResourceSetMapFlags, cuGraphicsMapResources, cuGraphicsUnmapResources, cudaGraphicsEGLRegisterImage

Get an eglFrame through which to access a registered EGL graphics resource.

eglFrame

- Returned eglFrame.

resource

- Registered resource to access.

index

- Index for cubemap surfaces.

mipLevel

- Mipmap level for the subresource to access.