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876a3ad581
We need to reduce the number of buffer bindings to 8 so it can run on all WebGPU devices. The best candidate was to combine info and bin_data, which are written by two different stages (draw_leaf and binning, respectively), both read by coarse, and are unstructured, so the only real shader change needed is to add the offset for the binning data. I thought I was going to have to do a blit to make it fit, but fortunately that wasn't needed. Progress to #202
39 lines
817 B
WebGPU Shading Language
39 lines
817 B
WebGPU Shading Language
// SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
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struct Config {
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width_in_tiles: u32,
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height_in_tiles: u32,
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target_width: u32,
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target_height: u32,
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n_drawobj: u32,
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n_path: u32,
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n_clip: u32,
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// To reduce the number of bindings, info and bin data are combined
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// into one buffer.
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bin_data_start: u32,
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// offsets within scene buffer (in u32 units)
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// Note: this is a difference from piet-gpu, which is in bytes
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pathtag_base: u32,
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pathdata_base: u32,
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drawtag_base: u32,
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drawdata_base: u32,
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transform_base: u32,
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linewidth_base: u32,
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}
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// Geometry of tiles and bins
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let TILE_WIDTH = 16u;
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let TILE_HEIGHT = 16u;
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// Number of tiles per bin
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let N_TILE_X = 16u;
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let N_TILE_Y = 16u;
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//let N_TILE = N_TILE_X * N_TILE_Y;
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let N_TILE = 256u;
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