nanovdb-editor-dev 0.0.21

NanoVDB Editor Python Module

NanoVDB Editor

Prerequisities:

• numpy

Running in Docker

To run the editor in the docker container, the Dockerfile needs to contain:

EXPOSE 8080

ENV NVIDIA_DRIVER_CAPABILITIES compute,graphics,utility

RUN apt-get update \
    && apt-get install -y \
    libxext6 \
    libegl1

Then run with the NVIDIA runtime selected (https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/latest/install-guide.html):

docker run --runtime=nvidia --net=host --gpus=all ...

Hello World

import nanovdb_editor as nve

editor, compute, compiler = nve.create_default(device_id=args.device)

config = nve.EditorConfig()

# Default values, set as needed
config.ip_address = b"127.0.0.1"
config.port = 8080
config.headless = 0
config.streaming = 0

editor.show(config)
# editor.wait_for_interrupt()   # uncomment when streaming is enabled

Shader Parameters

Shaders can have defined struct with shader parameters which are intended to be shown in the editor's UI:

struct shader_params_t
{
    float4 color;
    bool use_color;
    bool3 _pad1;
    int _pad2;
};
ConstantBuffer<shader_params_t> shader_params;

Shader parameters can have defined default values in the json file:

{
    "ShaderParams": {
        "color": {
            "value": [1.0, 0.0, 1.0, 1.0],
            "min": 0.0,
            "max": 1.0,
            "step": 0.01
        }
    }
}

Supported types: bool, int, uint, int64, uint64, float and its vectors and 4x4 matrix. Variables with _pad in the name are not shown in the UI. Those parameters can be interactively changed with generated UI in the editor's Params tab.

To display a group of shader parameters from different shaders define a json file with various shader paths:

{
    "ShaderParams": [
        "editor/editor.slang",
        "test/test.slang"
    ]
}

Acknowledgements

This project makes use of the following libraries:

• zlib – Compression library
• c-blosc – High-performance compressor optimized for binary data
• Vulkan-Headers – Vulkan API headers
• Vulkan-Loader – Vulkan ICD loader
• GLFW – Windowing, context, and input (optional)
• Dear ImGui – Immediate-mode GUI
• ImGuiFileDialog – File dialog for Dear ImGui
• ImGuiColorTextEdit – Syntax-highlighted text/code editor widget
• Slang – Shading language and compiler
• filewatch – Cross-platform file watching
• JSON for Modern C++ – JSON serialization for C++
• cnpy – Read/write NumPy .npy/.npz files from C++
• zstr – Transparent zlib iostream wrappers
• llhttp – High-performance HTTP parser
• Asio – Asynchronous networking and concurrency primitives
• RESTinio – Lightweight HTTP server framework
• fmt – Modern formatting library
• argparse – Header-only argument parser for C++17
• expected-lite – std::expected-like type for C++11/14/17
• libE57Format – E57 point cloud IO (optional)
• OpenH264 – H.264 encoder (optional)
• GoogleTest – C++ testing framework

Many thanks to the authors and contributors of these projects.