1 // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
2 3 // Various constants for the sizes of groups and tiles.
4 5 // Much of this will be made dynamic in various ways, but for now it's easiest
6 // to hardcode and keep all in one place.
7 8 // A LG_WG_FACTOR of n scales workgroup sizes by 2^n. Use 0 for a
9 // maximum workgroup size of 128, or 1 for a maximum size of 256.
10 #define LG_WG_FACTOR 0
11 #define WG_FACTOR (1<<LG_WG_FACTOR)
12 13 #define TILE_WIDTH_PX 32
14 #define TILE_HEIGHT_PX 32
15 16 #define PTCL_INITIAL_ALLOC 1024
17 18 // These should probably be renamed and/or reworked. In the binning
19 // kernel, they represent the number of bins. Also, the workgroup size
20 // of that kernel is equal to the number of bins, but should probably
21 // be more flexible (it's 512 in the K&L paper).
22 #define N_TILE_X 16
23 #define N_TILE_Y (8 * WG_FACTOR)
24 #define N_TILE (N_TILE_X * N_TILE_Y)
25 #define LG_N_TILE (7 + LG_WG_FACTOR)
26 #define N_SLICE (N_TILE / 32)
27 28 struct Config {
29 uint n_elements; // paths
30 uint n_pathseg;
31 uint width_in_tiles;
32 uint height_in_tiles;
33 Alloc tile_alloc;
34 Alloc bin_alloc;
35 Alloc ptcl_alloc;
36 Alloc pathseg_alloc;
37 Alloc anno_alloc;
38 Alloc trans_alloc;
39 };
40 41 // Fill modes.
42 #define MODE_NONZERO 0
43 #define MODE_STROKE 1
44 45 // Size of kernel4 clip state, in words.
46 #define CLIP_STATE_SIZE 2
47 48 // fill_mode_from_flags extracts the fill mode from tag flags.
49 uint fill_mode_from_flags(uint flags) {
50 return flags & 0x1;
51 }
52