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39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
// SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
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// Various constants for the sizes of groups and tiles.
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// Much of this will be made dynamic in various ways, but for now it's easiest
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// to hardcode and keep all in one place.
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// A LG_WG_FACTOR of n scales workgroup sizes by 2^n. Use 0 for a
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// maximum workgroup size of 128, or 1 for a maximum size of 256.
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#define LG_WG_FACTOR 1
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#define WG_FACTOR (1<<LG_WG_FACTOR)
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#define TILE_WIDTH_PX 16
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#define TILE_HEIGHT_PX 16
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#define PTCL_INITIAL_ALLOC 1024
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// These should probably be renamed and/or reworked. In the binning
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// kernel, they represent the number of bins. Also, the workgroup size
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// of that kernel is equal to the number of bins, but should probably
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// be more flexible (it's 512 in the K&L paper).
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#define N_TILE_X 16
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#define N_TILE_Y (8 * WG_FACTOR)
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#define N_TILE (N_TILE_X * N_TILE_Y)
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#define LG_N_TILE (7 + LG_WG_FACTOR)
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#define N_SLICE (N_TILE / 32)
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struct Config {
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uint n_elements; // paths
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uint n_pathseg;
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uint width_in_tiles;
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uint height_in_tiles;
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uint tile_base;
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uint bin_base;
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uint ptcl_base;
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uint pathseg_base;
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uint anno_base;
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};
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