nanovg
DiligentEngine
nanovg | DiligentEngine | |
---|---|---|
2 | 25 | |
27 | 3,317 | |
- | 1.0% | |
0.0 | 9.4 | |
almost 5 years ago | 4 days ago | |
C | Batchfile | |
zlib License | Apache License 2.0 |
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nanovg
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So you want to write a GUI framework
BGFX is a general-purpose 3D graphics engine, not a GUI nor vector graphics framework.
Nanovg is an awesome vector graphics library, but has limitations. (1) no ClearType, I fixed in my fork: https://github.com/Const-me/nanovg (2) The only way to get AA is hardware MSAA, unfortunately many popular platforms like Raspberry Pi don’t have good enough hardware to do it fast enough. Nanogui is built on top of Nanovg, shares the limitations.
I agree with the OP that Cairo and Skia are the only viable ones for Linux.
It’s sad because Windows has Direct2D for decades now (introduced in Vista), and unlike 2006, now in 2021 Linux actually has all the lower-level pieces to implement a comparable equivalent. Here’s a proof of concept: https://github.com/Const-me/Vrmac#vector-graphics-engine
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2D Graphics on Modern GPU (2019)
> in your words, that "the quality is not good"
Oh, you were asking why I said so? Because I have clicked the “notes document” link in the article, the OP used the same tiger test image as me, and that document has a couple of screenshots. And these were the only screenshots I have found. Compare them to screenshots of the same vector image rendered by my library, and you’ll see why I noted about the quality.
> Vrmacs draws paths by decomposing them into triangles, rendering them with the GPU rasterizer, and antialiasing edges using screen-space derivatives in the fragment shader.
More or less, but (a) not always, thin lines are different. (b) that’s a high-level overview but there’re many important details on the lower levels. For instance, “screen-space derivatives of what?” is an interesting question, critically important for correct and uniform stroke widths. The meshes I’m building are rotation-agnostic, and to some extent (but not completely) they are resolution-agnostic too.
> and it is perfectly capable of rendering high-quality small text on the GPU
It is, but the performance overhead is massive, compared to GPU rasterizer rendering these triangles. For real-world vector graphics that doesn’t have too much stuff per pixel that complexity is not needed because triangle meshes are good enough already.
> it looks like it occupies a sweet spot similar to NanoVG
They’re similarities, I have copy-pasted a few text-related things from my fork of NanoVG: https://github.com/Const-me/nanovg/ However, Vrmac delivers much higher quality of 2D vector graphics (VAA, circular arcs, thin strokes, etc), is much faster (meshes are typically reused across frames), and is more compatible (GL support on Windows or OSX is not good, you want D3D or Metal respectively).
DiligentEngine
- DiligentGraphics: Open-source cross-platform rendering middleware
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We Are Doomed: A pessimistic point of view of "modern software engineering"
Neither Apple nor Microsoft want any usable multiplatform graphics API. For this reason, none of them delivers such a thing.
If you want a multiplatform graphics API, you should use a library which implements such API on top of these native OS-specific APIs.
I have good experience with that one: http://diligentgraphics.com/diligent-engine/ I’ve used it couple times on Windows with D3D12 backend, and on Linux with GLES 3.1 backend.
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The Ultimate Cross-Platform Rendering Engine?
Diligent Engine: They say their engine is the successor of bgfx, but I'm not rly into that topic.
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Collecting the best C++ practices
Diligent Engine. A Modern Cross-Platform Low-Level 3D Graphics Library and Rendering Framework Tweet.
- Diligent Engine 2.5.3 is out: path tracing tutorials, render state cache, hot shader reload and more
- Good repos for beginners to browse that follow best modern C++ practices (including testing, static analysis etc...)
- Check out a new path tracing tutorial in Diligent Engine that shows how to use a render state packager to build pipeline states off-line and pack them into archive so that they can be loaded fast at run time.
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Improving my CPP skills
Read other people's code (I recommend modern small to medium sized github projects, because large ones can be overwhelming) or else you will forever stay in your bubble of how things are done. For example, I had learned a thing or two by using (and code browsing) diligent engine's source.
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What is a good absolutely minimalist game/rendering engine?
Diligent Engine
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A Rant on Developers
I'm not speaking out of my ass, either, I have very actively followed low-level development being done towards open-source engines such as Diligent and Wicked. I personally am a contributor to the latter engine, as well. It is baffling to me that independent developers don't support this platform.
What are some alternatives?
vello - An experimental GPU compute-centric 2D renderer.
bgfx - Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.
The-Forge - The Forge Cross-Platform Rendering Framework PC Windows, Steamdeck (native), Ray Tracing, macOS / iOS, Android, XBOX, PS4, PS5, Switch, Quest 2
libGDX - Desktop/Android/HTML5/iOS Java game development framework
rust-gpu - 🐉 Making Rust a first-class language and ecosystem for GPU shaders 🚧
msdfgen - Multi-channel signed distance field generator
nanovg - Antialiased 2D vector drawing library on top of OpenGL for UI and visualizations.
ds_cinder - An application framework built on Cinder
LLGL - Low Level Graphics Library (LLGL) is a thin abstraction layer for the modern graphics APIs OpenGL, Direct3D, Vulkan, and Metal
raylib - A simple and easy-to-use library to enjoy videogames programming