clGetImageInfo
clGetImageInfo
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3
clGetImageInfo Get information specific to an image object created with clCreateImage.

##

cl_int `clGetImageInfo` cl_mem image cl_image_info param_name size_t param_value_size void *param_value size_t *param_value_size_ret

## Parameters

`image`

  Specifies the image object being queried.

`param_name`

  Specifies the information to query. The list of supported `param_name` types and the information returned in `param_value` by `clGetImageInfo` is described in the table below.

`param_value`

  A pointer to memory where the appropriate result being queried is returned. If `param_value` is NULL, it is ignored.

`param_value_size`

  Used to specify the size in bytes of memory pointed to by `param_value`. This size must be ≥ size of return type as described in the table below.

  cl_image_info | Return Type | Info. returned in `param_value`
  --- | --- | ---
  `CL_IMAGE_FORMAT` | cl_image_format | Return image format descriptor specified when `image` is created with clCreateImage.
  `CL_IMAGE_ELEMENT_SIZE` | size_t | Return size of each element of the image memory object given by `image`. An element is made up of `n` channels. The value of `n` is given in `cl_image_format` descriptor.
  `CL_IMAGE_ROW_PITCH` | size_t | Return size in bytes of a row of elements of the image object given by `image`.
  `CL_IMAGE_SLICE_PITCH` | size_t | Return calculated slice pitch in bytes of a 2D slice for the 3D image object or size of each image in a 1D or 2D image array given by `image`. For a 1D image, 1D image buffer and 2D image object return 0.
  `CL_IMAGE_WIDTH` | size_t | Return width of image in pixels.
  `CL_IMAGE_HEIGHT` | size_t | Return height of image in pixels. For a 1D image, 1D image buffer and 1D image array object, height = 0.
  `CL_IMAGE_DEPTH` | size_t | Return depth of the image in pixels. For a 1D image, 1D image buffer, 2D image or 1D and 2D image array object, depth = 0.
  `CL_IMAGE_ARRAY_SIZE` | size_t | Return number of images in the image array. If `image` is not an image array, 0 is returned.
  `CL_IMAGE_BUFFER` | cl_mem | Return buffer object associated with `image`.
  `CL_IMAGE_NUM_MIP_LEVELS` | cl_uint | Return num_mip_levels associated with `image`.
  `CL_IMAGE_NUM_SAMPLES` | cl_uint | Return num_samples associated with `image`.
  `CL_IMAGE_D3D10_SUBRESOURCE_KHR` | ID3D10Resource * | (if the cl_khr_d3d10_sharing extension is enabled) If `image` was created using clCreateFromD3D10Texture2DKHR or clCreateFromD3D10Texture3DKHR, returns the `subresource` argument specified when `image` was created.
  `CL_IMAGE_DX9_MEDIA_PLANE_KHR` | cl_uint | Returns the plane argument value specified when `memobj` is created using clCreateFromDX9MediaSurfaceKHR. (If the cl_khr_dx9_media_sharing extension is supported)
  `CL_IMAGE_DX9_MEDIA_- SURFACE_PLANE_KHR` | cl_uint | Returns the plane argument value specified when `memobj` is created using clCreateFromDX9MediaSurfaceKHR. (If the cl_khr_dx9_media_sharing extension is supported)
  `CL_IMAGE_D3D11_- SUBRESOURCE_KHR` | ID3D11Resource * | If the cl_khr_d3d11_sharing extension is suported, If `image` was created using clCreateFromD3D11Texture2DKHR, or clCreateFromD3D11Texture3DKHR, returns the `subresource` argument specified when `image` was created.

`param_value_size_ret`

  Returns the actual size in bytes of data being queried by `param_value`. If `param_value_size_ret` is NULL, it is ignored.

## Notes

To get information that is common to all memory objects (buffer and image objects), use the clGetMemObjectInfo function.

## Errors

Returns CL_SUCCESS if the function is executed successfully. Otherwise, it returns one of the following errors:

- CL_INVALID_VALUE if `param_name` is not valid, or if size in bytes specified by `param_value_size` is < size of return type as described in the table above and `param_value` is not NULL.
- CL_INVALID_MEM_OBJECT if `image` is a not a valid image object.
- CL_OUT_OF_RESOURCES if there is a failure to allocate resources required by the OpenCL implementation on the device.
- CL_OUT_OF_HOST_MEMORY if there is a failure to allocate resources required by the OpenCL implementation on the host.
- CL_INVALID_DX9_MEDIA_SURFACE_KHR if `param_name` is `CL_IMAGE_DX9_MEDIA_PLANE_KHR` and `image` was not created by the function clCreateFromDX9MediaSurfaceKHR. (If the cl_khr_dx9_media_sharing extension is supported)
- CL_INVALID_D3D10_RESOURCE_KHR if `param_name` is `CL_MEM_D3D10_SUBRESOURCE_KHR` and `image` was not created by the function clCreateFromD3D10Texture2DKHR or clCreateFromD3D10Texture3DKHR. (If the cl_khr_d3d10_sharing extension is supported)
- CL_INVALID_D3D11_RESOURCE_KHR if `param_name` is `CL_MEM_D3D11_SUBRESOURCE_KHR` and `image` was not created by the function clCreateFromD3D11Texture2DKHR or clCreateFromD3D11Texture3DKHR. (If the cl_khr_d3d11_sharing extension is supported)

## Specification

OpenCL Specification

## Also see

clGetMemObjectInfo

##