Documentation/gpu/afbc.rst

7 AFBC is a proprietary lossless image compression protocol and format.
21 AFBC streams can contain several components - where a component
22 corresponds to a color channel (i.e. R, G, B, X, A, Y, Cb, Cr).
45    * Component 3: A(8)
70 Please note, however, that the inclusion of a "wasted" 'X' channel is
72 formats containing 'X' bits. If a fourth component is
75 '1'. If there is no requirement for a fourth component, then a format
126      - 10-bit per component RGB, with 2-bit alpha
128               * Component 0: R(10)
129               * Component 1: G(10)
130               * Component 2: B(10)
131               * Component 3: A(2)
139               * Component 3: A(8)
161               * Component 3: A(1)
171      - 10-bit per component YCbCr 444, single plane
173               * Component 0: Y(10)
174               * Component 1: Cb(10)
175               * Component 2: Cr(10)
193      - 10-bit per component YCbCr 422, single plane
195               * Component 0: Y(10)
196               * Component 1: Cb(10, 2x1 subsampled)
197               * Component 2: Cr(10, 2x1 subsampled)
200      - 10-bit per component YCbCr 422, two plane
202               * Component 0: Y(10)
204               * Component 0: Cb(10, 2x1 subsampled)
205               * Component 1: Cr(10, 2x1 subsampled)
215      - 10-bit per component YCbCr 420, single plane
217               * Component 0: Y(10)
218               * Component 1: Cb(10, 2x2 subsampled)
219               * Component 2: Cr(10, 2x2 subsampled)
230      - 10-bit per component YCbCr 420, two plane
232               * Component 0: Y(10)
234               * Component 0: Cb(10, 2x2 subsampled)
235               * Component 1: Cr(10, 2x2 subsampled)