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N15: rust-gpu: Move up
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‎content/posts/newsletter-015/index.md

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@@ -935,6 +935,68 @@ Join [Building Blocks's Discord server](https://discord.gg/CnTNjwb).
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[building-blocks-v0-1]: https://github.com/bonsairobo/building-blocks/releases/tag/v0.1.0
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[building-blocks-v0-2]: https://github.com/bonsairobo/building-blocks/releases/tag/v0.2.0
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### [Rust GPU v0.1][rustgpu-v0.1]
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![Rust GPU Sky](rustgpu.jpg)
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_Sky example in Rust GPU_
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[Rust GPU][rustgpu] is a project backed by [Embark Studios][embark]
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to make Rust a first-class language and ecosystem for building GPU code.
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Although still in very early stages of development,
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[Rust GPU released v0.1 in October][rustgpu-v0.1],
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and has already garnered over 2000 stars on Github.
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Currently, compiling and running very simple shaders
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works, and a significant portion of the core library also compiles. While things
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like if-statements and while-loops are working, many things aren't implemented yet.
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For example, for-loops, iterators and match/switch aren't supported yet. That
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means that while being technically usable, Rust GPU is far from being
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production-ready.
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The motivation behind the project:
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> Historically in games, GPU programming has been done through writing either
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> HLSL, or to a lesser extent GLSL. These are simple programming languages that
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> have evolved along with rendering APIs over the years. However, as game engines
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> have evolved, these languages have failed to provide mechanisms for dealing with
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> large codebases, and have generally stayed behind the curve compared to other
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> programming languages.
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>
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> In part this is because it's a niche language for a niche market, and in part
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> this has been because the industry as a whole has sunk quite a lot of time and
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> effort into the status quo. While over-all better alternatives to both languages
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> exist, none of them are in a place to replace HLSL or GLSL. Either because they
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> are vendor locked, or because they don't support the traditional graphics
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> pipeline. Examples of this include CUDA and OpenCL. And while attempts have been
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> made to create language in this space, none of them have gained any notable
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> traction in the gamedev community.
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The code for the sky example above:
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```rust
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#[spirv(entry = "fragment")]
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pub fn main_fs(input: Input<Vec4>, mut output: Output<Vec4>) {
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let dir: Vec3 = input.load().truncate();
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let cs_pos = Vec4(dir.0, -dir.1, 1.0, 1.0);
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let ws_pos = {
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let p = clip_to_world.mul_vec4(cs_pos);
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p.truncate() / p.3
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};
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let dir = (ws_pos - eye_pos).normalize();
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let color = sky(dir, sun_pos); // evaluate Preetham sky model
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output.store(color.extend(0.0))
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}
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```
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_Discussions:
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[/r/rust](https://reddit.com/r/rust/comments/jg056t/introducing_rustgpu_v01),
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[Hacker News](https://news.ycombinator.com/item?id=24858172),
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[Twitter](https://twitter.com/repi/status/1319274584915365888)_
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[rustgpu]: https://github.com/EmbarkStudios/rust-gpu
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[rustgpu-v0.1]: https://github.com/EmbarkStudios/rust-gpu/releases/tag/v0.1
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[embark]: https://www.embark-studios.com/
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### [gfx-rs]
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gfx-rs support for D3D has been improved. [@kvark] landed a few critical fixes
@@ -1270,68 +1332,6 @@ on the module's [repository][Proton-Media-Converter-Github]
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[Proton-Github]: https://github.com/ValveSoftware/Proton
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[Proton-Media-Converter-Github]: https://github.com/ValveSoftware/Proton/tree/proton_5.13/media-converter
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### [Rust GPU v0.1][rustgpu-v0.1]
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![Rust GPU Sky](rustgpu.jpg)
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_Sky example in Rust GPU_
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[Rust GPU][rustgpu] is a project backed by [Embark Studios][embark]
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to make Rust a first-class language and ecosystem for building GPU code.
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Although still in very early stages of development,
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[Rust GPU released v0.1 in October][rustgpu-v0.1],
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and has already garnered over 2000 stars on Github.
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Currently, compiling and running very simple shaders
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works, and a significant portion of the core library also compiles. While things
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like if-statements and while-loops are working, many things aren't implemented yet.
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For example, for-loops, iterators and match/switch aren't supported yet. That
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means that while being technically usable, Rust GPU is far from being
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production-ready.
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The motivation behind the project:
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> Historically in games, GPU programming has been done through writing either
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> HLSL, or to a lesser extent GLSL. These are simple programming languages that
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> have evolved along with rendering APIs over the years. However, as game engines
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> have evolved, these languages have failed to provide mechanisms for dealing with
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> large codebases, and have generally stayed behind the curve compared to other
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> programming languages.
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>
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> In part this is because it's a niche language for a niche market, and in part
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> this has been because the industry as a whole has sunk quite a lot of time and
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> effort into the status quo. While over-all better alternatives to both languages
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> exist, none of them are in a place to replace HLSL or GLSL. Either because they
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> are vendor locked, or because they don't support the traditional graphics
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> pipeline. Examples of this include CUDA and OpenCL. And while attempts have been
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> made to create language in this space, none of them have gained any notable
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> traction in the gamedev community.
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The code for the sky example above:
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```rust
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#[spirv(entry = "fragment")]
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pub fn main_fs(input: Input<Vec4>, mut output: Output<Vec4>) {
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let dir: Vec3 = input.load().truncate();
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let cs_pos = Vec4(dir.0, -dir.1, 1.0, 1.0);
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let ws_pos = {
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let p = clip_to_world.mul_vec4(cs_pos);
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p.truncate() / p.3
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};
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let dir = (ws_pos - eye_pos).normalize();
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let color = sky(dir, sun_pos); // evaluate Preetham sky model
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output.store(color.extend(0.0))
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}
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```
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_Discussions:
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[/r/rust](https://reddit.com/r/rust/comments/jg056t/introducing_rustgpu_v01),
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[Hacker News](https://news.ycombinator.com/item?id=24858172),
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[Twitter](https://twitter.com/repi/status/1319274584915365888)_
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[rustgpu]: https://github.com/EmbarkStudios/rust-gpu
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[rustgpu-v0.1]: https://github.com/EmbarkStudios/rust-gpu/releases/tag/v0.1
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[embark]: https://www.embark-studios.com/
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## Popular Workgroup Issues in Github
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<!-- Up to 10 links to interesting issues -->

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