gl_formatsInc.adoc

OpenGL and Corresponding OpenCL Image Formats

The table below (Table 9.4) describes the list of GL texture internal formats and the corresponding CL image formats. If a GL texture object with an internal format from the table below is successfully created by OpenGL, then there is guaranteed to be a mapping to one of the corresponding CL image format(s) in that table. Texture objects created with other OpenGL internal formats may (but are not guaranteed to) have a mapping to a CL image format; if such mappings exist, they are guaranteed to preserve all color components, data types, and at least the number of bits/component actually allocated by OpenGL for that format.

GL internal format	CL image format (channel order, channel data type)
GL_RGBA8	CL_RGBA, CL_UNORM_INT8 or CL_BGRA, CL_UNORM_INT8
GL_SRGBA8_ALPHA8	CL_sRGBA, CL_UNORM_INT8
GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV	CL_RGBA, CL_UNORM_INT8
GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV	CL_BGRA, CL_UNORM_INT8
GL_RGBA8I, GL_RGBA8I_EXT	CL_RGBA, CL_SIGNED_INT8
GL_RGBA16I, GL_RGBA16I_EXT	CL_RGBA, CL_SIGNED_INT16
GL_RGBA32I, GL_RGBA32I_EXT	CL_RGBA, CL_SIGNED_INT32
GL_RGBA8UI, GL_RGBA8UI_EXT	CL_RGBA, CL_UNSIGNED_INT8
GL_RGBA16UI, GL_RGBA16UI_EXT	CL_RGBA, CL_UNSIGNED_INT16
GL_RGBA32UI, GL_RGBA32UI_EXT	CL_RGBA, CL_UNSIGNED_INT32
GL_RGBA8_SNORM	CL_RGBA, CL_SNORM_INT8
GL_RGBA16	CL_RGBA, CL_UNORM_INT16
GL_RGBA16_SNORM	CL_RGBA, CL_SNORM_INT166
GL_RGBA16F, GL_RGBA16F_ARB	CL_RGBA, CL_HALF_FLOAT
GL_RGBA32F, GL_RGBA32F_ARB	CL_RGBA, CL_FLOAT
GL_R8	CL_R, CL_UNORM_INT8
GL_R8_SNORM	CL_R, CL_SNORM_INT8
GL_R16	CL_R, CL_UNORM_INT16
GL_R16_SNORM	CL_R, CL_SNORM_INT16
GL_R16F	CL_R, CL_HALF_FLOAT
GL_R32F	CL_R, CL_FLOAT
GL_R8I	CL_R, CL_SIGNED_INT8
GL_R16I	CL_R, CL_SIGNED_INT16
GL_R32I	CL_R, CL_SIGNED_INT32
GL_R8UI	CL_R, CL_UNSIGNED_INT8
GL_R16UI	CL_R, CL_UNSIGNED_INT16
GL_R32UI	CL_R, CL_UNSIGNED_INT32
GL_RG8	CL_RG, CL_UNORM_INT8
GL_RG8_SNORM	CL_RG, CL_SNORM_INT8
GL_RG16	CL_RG, CL_UNORM_INT16
GL_RG16_SNORM	CL_RG, CL_SNORM_INT16
GL_RG16F	CL_RG, CL_HALF_FLOAT
GL_RG32F	CL_RG, CL_FLOAT
GL_RG8I	CL_RG, CL_SIGNED_INT8
GL_RG16I	CL_RG, CL_SIGNED_INT16
GL_RG32I	CL_RG, CL_SIGNED_INT32
GL_RG8UI	CL_RG, CL_UNSIGNED_INT8
GL_RG16UI	CL_RG, CL_UNSIGNED_INT16
GL_RG32UI	CL_RG, CL_UNSIGNED_INT32

If the cl_khr_gl_depth_images extension is enabled, the following new image formats are added to table 9.4 in section 9.6.3.1 of the OpenCL 2.0 extension specification. If a GL texture object with an internal format from table 9.4 is successfully created by OpenGL, then there is guaranteed to be a mapping to one of the corresponding CL image format(s) in that table.

GL internal format	CL image format (channel order, channel data type)
GL_DEPTH_COMPONENT32F	CL_DEPTH, CL_FLOAT
GL_DEPTH_COMPONENT16	CL_DEPTH, CL_UNORM_INT16
GL_DEPTH24_STENCIL8	CL_DEPTH_STENCIL, CL_UNORM_INT24
GL_DEPTH32F_STENCIL8	CL_DEPTH_STENCIL, CL_FLOAT