get_image_channel_order

Return the image channel data order.

int get_image_channel_order ( image2d_t image)

int get_image_channel_order ( image3d_t image)

Description

Return the image channel order. Valid values are:

CLK_A
CLK_R
CLK_RG
CLK_RA
CLK_RGB
CLK_RGBA
CLK_ARGB
CLK_BGRA
CLK_INTENSITY
CLK_LUMINANCE

Notes

The following table describes the mapping of the number of channels of an image element to the appropriate components in the float4, int4 or unsigned int4 vector data type for the color values returned by read_image{f|i|ui} or supplied to write_image{f|i|ui}. The unmapped components will be set to 0.0 for red, green and blue channels and will be set to 1.0 for the alpha channel.

Channel Order	float4, int4 or unsigned int4 components of channel data
`CL_R`	`(r, 0.0, 0.0, 1.0)`
`CL_A`	`(0.0, 0.0, 0.0, a)`
`CL_RG`	`(r, g, 0.0, 1.0)`
`CL_RA`	`(r, 0.0, 0.0, a)`
`CL_RGB`	`(r, g, b, 1.0)`
`CL_RGBA, CL_BGRA, CL_ARGB`	`(r, g, b, a)`
`CL_INTENSITY`	`(I, I, I, I)`
`CL_LUMINANCE`	`(L, L, L, 1.0)`

Specification

OpenCL Specification

Also see

Image Functions

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