write_imageh (2D)

Write color value to location in the 1D or 2D image object.

void write_imageh ( image2d_t image,
  int2 coord,
  float4 color)


Write color value to location specified by coordinate (x, y) in the 1D or 2D image object specified by image. Appropriate data format conversion to the specified image format is done before writing the color value. x and y are considered to be unnormalized coordinates and must be in the range 0... image width - 1, and 0... image height - 1.

write_imageh can only be used with image objects created with image_channel_data_type set to one of the pre-defined packed formats or set to CL_SNORM_INT8, CL_UNORM_INT8, CL_SNORM_INT16, CL_UNORM_INT16, or CL_HALF_FLOAT. Appropriate data format conversion will be done to convert channel data from a half floating-point value to actual data format in which the channels are stored.

The behavior of write_imageh for image objects created with image_channel_data_type values not specified in the description above or with (x, y) coordinate values that are not in the range (0... image width - 1, 0... image height - 1), respectively, is undefined.


OpenCL Specification

Also see

Image Functions

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