mirror of
https://github.com/italicsjenga/vello.git
synced 2024-10-18 07:21:30 +11:00
7ae5aa7491
The fat line in coarse path rendering is not done, but when lines are thin that mostly looks ok. Onward to tiger!
53 lines
1.2 KiB
WebGPU Shading Language
53 lines
1.2 KiB
WebGPU Shading Language
// Copyright 2022 Google LLC
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// https://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
//
|
|
// Also licensed under MIT license, at your choice.
|
|
|
|
// Layout of per-tile command list
|
|
// Initial allocation, in u32's.
|
|
let PTCL_INITIAL_ALLOC = 64u;
|
|
let PTCL_INCREMENT = 256u;
|
|
|
|
// Amount of space taken by jump
|
|
let PTCL_HEADROOM = 2u;
|
|
|
|
// Tags for PTCL commands
|
|
let CMD_END = 0u;
|
|
let CMD_FILL = 1u;
|
|
let CMD_STROKE = 2u;
|
|
let CMD_SOLID = 3u;
|
|
let CMD_COLOR = 5u;
|
|
let CMD_JUMP = 11u;
|
|
|
|
// The individual PTCL structs are written here, but read/write is by
|
|
// hand in the relevant shaders
|
|
|
|
struct CmdFill {
|
|
tile: u32,
|
|
backdrop: i32,
|
|
}
|
|
|
|
struct CmdStroke {
|
|
tile: u32,
|
|
half_width: f32,
|
|
}
|
|
|
|
struct CmdJump {
|
|
new_ix: u32,
|
|
}
|
|
|
|
struct CmdColor {
|
|
rgba_color: u32,
|
|
}
|