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24 #ifndef FREEDRENO_LAYOUT_H_
25 #define FREEDRENO_LAYOUT_H_
30 #include "util/u_debug.h"
31 #include "util/u_math.h"
32 #include "util/format/u_format.h"
34 /* Shared freedreno mipmap layout helper
36 * It does *not* attempt to track surface transitions, in particular
37 * about UBWC state. Possibly it should, but
38 * (a) I'm not sure if in all cases we can transparently do in-
39 * place transitions (ie. a5xx textures with interleaved
41 * (b) Even if we can, we probably can't assume that we have
42 * figured out yet how to do in-place transition for every
46 /* Texture Layout on a3xx:
47 * -----------------------
49 * Each mipmap-level contains all of it's layers (ie. all cubmap
50 * faces, all 1d/2d array elements, etc). The texture sampler is
51 * programmed with the start address of each mipmap level, and hw
52 * derives the layer offset within the level.
55 * Texture Layout on a4xx+:
56 * -----------------------
58 * For cubemap and 2d array, each layer contains all of it's mipmap
59 * levels (layer_first layout).
61 * 3d textures are laid out as on a3xx.
63 * In either case, the slice represents the per-miplevel information,
64 * but in layer_first layout it only includes the first layer, and
65 * an additional offset of (rsc->layer_size * layer) must be added.
68 * UBWC Color Compressions (a5xx+):
69 * -------------------------------
71 * Color compression is only supported for tiled layouts. In general
72 * the meta "flag" buffer (ie. what holds the compression state for
73 * each block) can be separate from the color data, except for textures
74 * on a5xx where it needs to be interleaved with layers/levels of a
78 #define FDL_MAX_MIP_LEVELS 14
81 uint32_t offset
; /* offset of first layer in slice */
83 uint32_t size0
; /* size of first layer in slice */
87 * Encapsulates the layout of a resource, including position of given 2d
88 * surface (layer, level) within. Or rather all the information needed
92 struct fdl_slice slices
[FDL_MAX_MIP_LEVELS
];
93 struct fdl_slice ubwc_slices
[FDL_MAX_MIP_LEVELS
];
95 uint32_t ubwc_layer_size
; /* in bytes */
96 bool layer_first
: 1; /* see above description */
98 /* Note that for tiled textures, beyond a certain mipmap level (ie.
99 * when width is less than block size) things switch to linear. In
100 * general you should not directly look at fdl_layout::tile_mode,
101 * but instead use fdl_surface::tile_mode which will correctly take
104 uint32_t tile_mode
: 2;
105 /* Bytes per pixel (where a "pixel" is a single row of a block in the case
106 * of compression), including each sample in the case of multisample
111 uint32_t width0
, height0
, depth0
;
113 enum pipe_format format
;
115 uint32_t size
; /* Size of the whole image, in bytes. */
118 static inline uint32_t
119 fdl_layer_stride(const struct fdl_layout
*layout
, unsigned level
)
121 if (layout
->layer_first
)
122 return layout
->layer_size
;
124 return layout
->slices
[level
].size0
;
127 static inline uint32_t
128 fdl_surface_offset(const struct fdl_layout
*layout
, unsigned level
, unsigned layer
)
130 const struct fdl_slice
*slice
= &layout
->slices
[level
];
131 return slice
->offset
+ fdl_layer_stride(layout
, level
) * layer
;
134 static inline uint32_t
135 fdl_ubwc_offset(const struct fdl_layout
*layout
, unsigned level
, unsigned layer
)
137 /* for now this doesn't do anything clever, but when UBWC is enabled
138 * for multi layer/level images, it will.
140 if (layout
->ubwc_layer_size
) {
144 return layout
->ubwc_slices
[0].offset
;
148 fdl_level_linear(const struct fdl_layout
*layout
, int level
)
150 unsigned w
= u_minify(layout
->width0
, level
);
156 static inline uint32_t
157 fdl_tile_mode(const struct fdl_layout
*layout
, int level
)
159 if (layout
->tile_mode
&& fdl_level_linear(layout
, level
))
160 return 0; /* linear */
162 return layout
->tile_mode
;
166 fdl_ubwc_enabled(const struct fdl_layout
*layout
, int level
)
168 return layout
->ubwc_layer_size
&& fdl_tile_mode(layout
, level
);
172 fdl_layout_buffer(struct fdl_layout
*layout
, uint32_t size
);
175 fdl6_layout(struct fdl_layout
*layout
,
176 enum pipe_format format
, uint32_t nr_samples
,
177 uint32_t width0
, uint32_t height0
, uint32_t depth0
,
178 uint32_t mip_levels
, uint32_t array_size
, bool is_3d
, bool ubwc
);
181 fdl_dump_layout(struct fdl_layout
*layout
);
184 fdl6_get_ubwc_blockwidth(struct fdl_layout
*layout
,
185 uint32_t *blockwidth
, uint32_t *blockheight
);
187 #endif /* FREEDRENO_LAYOUT_H_ */