SimVX Graphics

SimVX's Vulkan renderer and window layer: App, the GPU-driven 3D renderer, 2D drawing and the windowing backends. Most users want simvx, which includes it.

Pre-alpha. SimVX publishes development releases only (0.0.0.devN) and is under active development; the API changes between builds. Once stable versions ship to PyPI, development builds continue on pypi.simvx.com.

Install

pip install --pre simvx            # the whole engine (recommended)
pip install --pre simvx-graphics   # core and the renderer, without the editor, IDE, web export or AI

Latest development build: add --extra-index-url https://pypi.simvx.com/.

Needs Python 3.14+ and a Vulkan 1.2+ driver; glslc only for your own GLSL. Other window layers: simvx-graphics[sdl3] (touch, pens, app lifecycle) or simvx-graphics[qt] (inside a Qt app).

Use

from simvx.core import Node2D
from simvx.graphics import App


class Game(Node2D):
    dynamic = True  # on_draw reads the window size, so it redraws every frame

    def on_draw(self, renderer):
        renderer.circle(self.viewport_size / 2, 40, fill=(0.4, 0.8, 1.0, 1.0))


if __name__ == "__main__":
    App(title="Game").run(Game())

What it renders

• Lighting: PBR materials, directional, point and spot lights with cascaded and point shadows, image-based lighting, reflection probes and baked probe volumes.
• Post-processing set on WorldEnvironment: bloom and tonemapping, SSAO, SSR, SSGI, TAA, motion blur, volumetric fog and render-scale upscaling.
• GPU-driven drawing: one multi-draw-indirect call submits every visible opaque instance, after frustum and Hi-Z occlusion culling.
• 2D: immediate-mode shapes, text and images from on_draw.
• Offscreen views: SubViewport renders a subtree to a texture, for monitors and mirrors.

Documentation · Source · Licence: AGPL-3.0-or-later with Additional Terms, including the Game-Distribution Exception.