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

cl_intclGetImageInfo(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(3clc).
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(3clc) extension is enabled) If image was created using clCreateFromD3D10Texture2DKHR(3clc) or clCreateFromD3D10Texture3DKHR(3clc), 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(3clc). (If the cl_khr_dx9_media_sharing(3clc) extension is supported)
CL_IMAGE_DX9_MEDIA_- SURFACE_PLANE_KHR cl_uint Returns the plane argument value specified when memobj is created using clCreateFromDX9MediaSurfaceKHR(3clc). (If the cl_khr_dx9_media_sharing(3clc) extension is supported)
CL_IMAGE_D3D11_- SUBRESOURCE_KHR ID3D11Resource * If the cl_khr_d3d11_sharing(3clc) extension is suported, If image was created using clCreateFromD3D11Texture2DKHR(3clc), or clCreateFromD3D11Texture3DKHR(3clc), 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(3clc) 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(3clc). (If the cl_khr_dx9_media_sharing(3clc) 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(3clc) or clCreateFromD3D10Texture3DKHR(3clc). (If the cl_khr_d3d10_sharing(3clc) 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(3clc) or clCreateFromD3D11Texture3DKHR(3clc). (If the cl_khr_d3d11_sharing(3clc) extension is supported)

SPECIFICATION

m[blue]OpenCL Specificationm[][1]

AUTHORS

The Khronos Group

COPYRIGHT


Copyright © 2007-2011 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and/or associated documentation files (the "Materials"), to deal in the Materials without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Materials, and to permit persons to whom the Materials are furnished to do so, subject to the condition that this copyright notice and permission notice shall be included in all copies or substantial portions of the Materials.

NOTES

1.
OpenCL Specification
page 116, section 5.3.6 - Image Object Queries

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