shaders
magnum
shaders | magnum | |
---|---|---|
9 | 22 | |
472 | 4,664 | |
- | - | |
1.8 | 9.6 | |
about 2 years ago | 9 days ago | |
C++ | C++ | |
- | GNU General Public License v3.0 or later |
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shaders
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Adding HLSL and DirectX Support to Clang and LLVM
It may be close to a technical impossibility, but the Circle compiler by Sean Baxter is attempting it. That's based on an aggressive "de-pointerization" (see [1] in particular for details). There's also academic work[2] to compile C++ to shaders. I agree that it's an open question how well that will work out.
Also as pointed out elsethread, now that buffer device address is starting to land, the friction to compile pointer-intense C++ code should decrease even more. These are exciting times!
[1]: https://github.com/seanbaxter/shaders#approaching-circle-sha...
[2]: https://arxiv.org/abs/2109.14682
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Writing Vulkan SPIR-V shaders in C++?
You can use circle c++ shader https://github.com/seanbaxter/shaders but it's limited to look linux afaik?
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Where to Learn Vulkan for parallel computation (with references to porting from CUDA)
First we have Circle C++ shaders, which pretty much would tick all the boxes. Problem is it's closed source and only compiles host code on linux. Closed source isn't the biggest of issues actually, but prevents anyone from fixing the developers issue with interfacing with the windows ABI and getting the thing working on windows (which itself isn't something they are able to fix because windows doesn't provide the documentation to work with their ABI). However you could use it separately to compile your SPIR-V for windows since SPIR-V doesn't care about platform itself.
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Has anyone seriously considered C++AMP? Thoughts / Experiences?
Yes, Vulkan GPU source is split, though technically in a way that makes it more similar to CUDA. Vulkan uses an intermediate format instead of consuming text code directly, meaning new features are easier to add and frontend code doesn't need to be passed to the vendors driver compiler. SPIR-V is like DXIL or PTX code for CUDA, basically LLVM IR for GPUs. The CUDA compiler compiles your device code into PTX code, and it's what enables you to have "non split" source code. There's even an option to have separate PTX code in CUDA. There are few projects that aim to bring Vulkan SPIR-V into source, including Rust GPU for rust (though it will still have to be in a separate file) and Circle C++ shader for C++.
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Circle, the C++ Automation Language
My favorite use is putting user-defined attributes on data members, and using reflection to generate a UI to manipulate those values. I do it with these shadertoys:
https://github.com/seanbaxter/shaders#reflection-and-attribu...
Just mark your declarations up with custom attributes:
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Unified Shader Programming in C++
I'm confused what is novel about this paper. We already have unified shader programming with circle C++, with way more features, and instead of having an SPIR-V compiler, they made a source to source compiler... We have quite a few of those.
I think shader specialisation is handled pretty well in circle. Since you can essentially run arbitrary C++ code at compile time, selection and specialisation of a shader can even depend on hardware specific benchmarks. There is an extensive repo with examples here: https://github.com/seanbaxter/shaders. One example decodes a sprite sheet stored as a png at compile time and creates a specialised compute shader for it. You can also easily implement a control UI based on reflection of uniform shader parameters.
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Embark Studios has rewritten all their renderer's shader code from GLSL to Rust
There's a project doing something similar for C++ called Circle which is pretty incredible. In its core Circle is an extension of standard C++ which adds a ton of metaprogramming facilities and other productivity enhancing features, things the base language sorely lacks like full compile-time execution of regular C++ code which lets you do anything you can normally do from runtime during compile-time (including file I/O and networking), reflection, typed enums, pattern matching, hygienic macros, list comprehensions and language-native ranges, first class paramater packs and much more.
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Code generation using attributes
I use them to automatically generate an ImGui interface for controlling a shadertoy here: https://github.com/seanbaxter/shaders/blob/master/README.md#user-attributes-and-dear-imgui
magnum
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Want to a 3D game without a game engine but not having to deal with opengl stuff ?
Magnum
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Good graphics engines to visualize my physics framework?
If you want something that gives you more control you could use magnum.
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100,000 subscriber celebration – Ask the Godot contributors anything!
Therefore, in terms of artist mindshare, Blender is the leading open source 3D creation program, but not the leading 3D creation program. I think Godot is already in a similar situation, and has been for a few years now. In comparison, most other open source game engines have focused on providing low-level functionality. These certainly fulfill a niche, but in my experience, most people want something that works at a higher level and comes with a built-in editor.
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Looking for a 2D/3D rendering layer for C++
Magnum is worth checking out.
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Simple light graphics library for c++?
Since you want something lightweight, I'll assume you mean the former. If that's the case, then checkout bgfx or Magnum. Magnum does include some extra features typically found in a graphics engine.
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Best C++ libraries for 2D game development
You could try Magnum it wraps SDL and others, but you might find it maybe too low-level. It's certainly not Love2D.
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Exceptions: Yes or No?
C++ is similar to C in that there are multiple "styles" of use that vary from project to project. Other, usually newer languages (C#, Python, Rust, etc) tend to have a stronger sense of what idioms should be used. Whereas, for instance, some C++ projects (like some GUI libraries and game/graphics engines) will partially/entirely replace the STL (and older ones may have been around before C++ had a standard library aside from C's), or forbid the use of certain C++ features (example).
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What is a good absolutely minimalist game/rendering engine?
Magnum Graphics
- C++ Game Engine - Which framework?
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Magnum: Lightweight, modular C++11 graphics middleware for games/visualization
> He has Vulkan support in here with a clearly marked file named Pipeline.cpp. The guy knows what a pipeline is...
There is a Vulkan API wrapper. However, there is no "Vk Renderer" -- no code seems to use the Vulkan parts of the code system, and the two projects seem unrelated.
> * Is this not a UBO interface?
There are ways of making a uniform buffer, however the examples don't cover them and the API doesn't adapt automatically. See how all of the setters assert if UBOs are enabled.
https://github.com/mosra/magnum/blob/cfc02599e54e02337dd56bb...
> * I don't see why you think there's limited support for multiple framebuffers...?
The code I do see is about binding/unbinding framebuffers in a stateful manner, e.g. AbstractFramebuffer::bind(), rather than supporting passes.
> None of your criticism seem well intentioned. It might behoove you to give people the benefit of the doubt and realize that you may be able to learn something from them, even if they're so clearly inferior to you.
To put it simply, I've taught enough graphics to know first-hand the kinds of misconceptions that OpenGL-styled APIs can cause, and I'm just a bit tired to see it continue. Admittedly I was a bit harsh, I don't mean any harm towards the author. There are just graphics APIs with interfaces I consider to be much better designed.
What are some alternatives?
rust-gpu - 🐉 Making Rust a first-class language and ecosystem for GPU shaders 🚧
bgfx - Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.
meta
Ogre 3D - scene-oriented, flexible 3D engine (C++, Python, C#, Java)
OpenSceneGraph - OpenSceneGraph git repository
circle - The compiler is available for download. Get it!
GLFW - A multi-platform library for OpenGL, OpenGL ES, Vulkan, window and input
dcompute - DCompute: Native execution of D on GPUs and other Accelerators
Cinder - Cinder is a community-developed, free and open source library for professional-quality creative coding in C++.
processing - Source code for the Processing Core and Development Environment (PDE)
urho3d - Game engine