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Clarify licensing for WGSL shaders (#205)

Browse source 
As stated by the README, the intention is for the shaders to be
provided under the terms of the Unlicense in addition to the MIT
and Apache-2.0 licenses.

While here, add a self-contained UNLICENSE file to replace the
external reference to unlicense.org.
This commit is contained in:
Elias Naur 2022-11-19 10:45:42 -06:00 committed by GitHub
parent de998220db
commit 18c0da02e5
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29 changed files with 54 additions and 364 deletions
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3
README.md
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@ -38,7 +38,7 @@ In short, the goal is to facilitate the research now, collect the data, and then
The piet-gpu project is dual-licensed under both [Apache 2.0](LICENSE-APACHE) and [MIT](LICENSE_MIT) licenses. The piet-gpu project is dual-licensed under both [Apache 2.0](LICENSE-APACHE) and [MIT](LICENSE_MIT) licenses.
In addition, the shaders are provided under the terms of the [Unlicense]. The intent is for this research to be used in as broad a context as possible. In addition, the shaders are provided under the terms of the [Unlicense](UNLICENSE). The intent is for this research to be used in as broad a context as possible.
The dx12 backend was adapted from piet-dx12 by Brian Merchant. The dx12 backend was adapted from piet-dx12 by Brian Merchant.
@ -51,6 +51,5 @@ Contributions are welcome by pull request. The [Rust code of conduct] applies. P
[Shader Model 6]: https://docs.microsoft.com/en-us/windows/win32/direct3dhlsl/hlsl-shader-model-6-0-features-for-direct3d-12 [Shader Model 6]: https://docs.microsoft.com/en-us/windows/win32/direct3dhlsl/hlsl-shader-model-6-0-features-for-direct3d-12
[DXC]: https://github.com/microsoft/DirectXShaderCompiler [DXC]: https://github.com/microsoft/DirectXShaderCompiler
[Druid]: https://github.com/linebender/druid [Druid]: https://github.com/linebender/druid
[Unlicense]: https://unlicense.org/
[Rust code of conduct]: https://www.rust-lang.org/policies/code-of-conduct [Rust code of conduct]: https://www.rust-lang.org/policies/code-of-conduct
[shader_compilation.md]: ./doc/shader_compilation.md [shader_compilation.md]: ./doc/shader_compilation.md

24
UNLICENSE Normal file
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@ -0,0 +1,24 @@
This is free and unencumbered software released into the public domain.
Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in source code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.
In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit
of the public at large and to the detriment of our heirs and
successors. We intend this dedication to be an overt act of
relinquishment in perpetuity of all present and future rights to this
software under copyright law.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
For more information, please refer to <http://unlicense.org/>

16
piet-wgsl/shader/backdrop.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// Note: this is the non-atomic version // Note: this is the non-atomic version
struct Tile { struct Tile {

16
piet-wgsl/shader/backdrop_dyn.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// Prefix sum for dynamically allocated backdrops // Prefix sum for dynamically allocated backdrops

16
piet-wgsl/shader/bbox_clear.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
#import config #import config

16
piet-wgsl/shader/binning.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// The binning stage // The binning stage

1
piet-wgsl/shader/clip_leaf.wgsl
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@ -1,3 +1,4 @@
// SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
#import config #import config
#import bbox #import bbox

1
piet-wgsl/shader/clip_reduce.wgsl
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@ -1,3 +1,4 @@
// SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
#import config #import config
#import bbox #import bbox

16
piet-wgsl/shader/coarse.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// The coarse rasterization stage. // The coarse rasterization stage.

16
piet-wgsl/shader/draw_leaf.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// Finish prefix sum of drawtags, decode draw objects. // Finish prefix sum of drawtags, decode draw objects.

16
piet-wgsl/shader/draw_reduce.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
#import config #import config
#import drawtag #import drawtag

16
piet-wgsl/shader/fine.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// Fine rasterizer. This can run in simple (just path rendering) and full // Fine rasterizer. This can run in simple (just path rendering) and full
// modes, controllable by #define. // modes, controllable by #define.

16
piet-wgsl/shader/path_coarse.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
#import config #import config
#import pathtag #import pathtag

16
piet-wgsl/shader/path_coarse_full.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// Path coarse rasterization for the full implementation. // Path coarse rasterization for the full implementation.

16
piet-wgsl/shader/pathseg.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// Path segment decoding for the full case. // Path segment decoding for the full case.

16
piet-wgsl/shader/pathtag_reduce.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
#import config #import config
#import pathtag #import pathtag

16
piet-wgsl/shader/pathtag_scan.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
#import config #import config
#import pathtag #import pathtag

16
piet-wgsl/shader/shared/bbox.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// The annotated bounding box for a path. It has been transformed, // The annotated bounding box for a path. It has been transformed,
// but contains a link to the active transform, mostly for gradients. // but contains a link to the active transform, mostly for gradients.

17
piet-wgsl/shader/shared/blend.wgsl
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@ -1,19 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// Color mixing modes // Color mixing modes

16
piet-wgsl/shader/shared/bump.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// TODO: robust memory (failure flags) // TODO: robust memory (failure flags)
struct BumpAllocators { struct BumpAllocators {

2
piet-wgsl/shader/shared/clip.wgsl
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@ -1,3 +1,5 @@
// SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
struct Bic { struct Bic {
a: u32, a: u32,
b: u32, b: u32,

16
piet-wgsl/shader/shared/config.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
struct Config { struct Config {
width_in_tiles: u32, width_in_tiles: u32,

16
piet-wgsl/shader/shared/cubic.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
struct Cubic { struct Cubic {
p0: vec2<f32>, p0: vec2<f32>,

16
piet-wgsl/shader/shared/drawtag.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// The DrawMonoid is computed as a prefix sum to aid in decoding // The DrawMonoid is computed as a prefix sum to aid in decoding
// the variable-length encoding of draw objects. // the variable-length encoding of draw objects.

16
piet-wgsl/shader/shared/pathtag.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
struct TagMonoid { struct TagMonoid {
trans_ix: u32, trans_ix: u32,

16
piet-wgsl/shader/shared/ptcl.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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 // Layout of per-tile command list
// Initial allocation, in u32's. // Initial allocation, in u32's.

16
piet-wgsl/shader/shared/segment.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
struct Segment { struct Segment {
origin: vec2<f32>, origin: vec2<f32>,

18
piet-wgsl/shader/shared/tile.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// Common datatypes for path and tile intermediate info. // Common datatypes for path and tile intermediate info.
@ -26,4 +12,4 @@ struct Path {
struct Tile { struct Tile {
backdrop: i32, backdrop: i32,
segments: u32, segments: u32,
} }

16
piet-wgsl/shader/tile_alloc.wgsl
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@ -1,18 +1,4 @@
// Copyright 2022 Google LLC // SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
//
// 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.
// Tile allocation (and zeroing of tiles) // Tile allocation (and zeroing of tiles)