Docker - Mesa 3D OpenGL Software Rendering (Gallium) - LLVMpipe, and OpenSWR Drivers

About

Minimal Docker container bundled with the Mesa 3D Gallium Drivers: LLVMpipe & OpenSWR, enabling OpenGL support inside a Docker container without the need for a GPU.

Features

• Alpine Linux 3.10
• LLVMpipe Driver (Mesa 19.0.8)
• OpenSWR Driver (Mesa 19.0.8)
• OSMesa Interface (Mesa 19.0.8)
• softpipe - Reference Gallium software driver
• swrast - Legacy Mesa software rasterizer
• Xvfb - X Virtual Frame Buffer

Docker Images

Image	Description
utensils/opengl:latest	Latest/Dev Mesa version
utensils/opengl:stable	Stable Mesa version
utensils/opengl:19.0.8	Mesa version 19.0.8
utensils/opengl:18.3.6	Mesa version 18.3.6
utensils/opengl:18.2.8	Mesa version 18.2.8

Building

This image can be built using the supplied Makefile

Make default image (latest):

make

Make stable image:

make stable

Make all images:

make all

Usage

This image is intended to be used as a base image to extend from. One good example of this is the Envisaged project which allows for quick and easy Gource visualizations from within a Docker container.

Extending from this image.

FROM utensils/opengl:19.0.8
COPY ./MyAppOpenGLApp /AnywhereMyHeartDesires
RUN apk add --update my-deps...

Environment Variables

The following environment variables are present to modify rendering options.

High level settings

Variable	Default Value	Description
XVFB_WHD	1920x1080x24	Xvfb demensions and bit depth.
DISPLAY	:99	X Display number.
LIBGL_ALWAYS_SOFTWARE	1	Forces Mesa 3D to always use software rendering.
GALLIUM_DRIVER	llvmpipe	Sets OpenGL Driver llvmpipe, swr, softpipe, and swrast

Lower level settings / tweaks

Variable	Default Value	Description
LP_NO_RAST	false	LLVMpipe - If set LLVMpipe will no-op rasterization
LP_DEBUG	""	LLVMpipe - A comma-separated list of debug options is accepted
LP_PERF	""	LLVMpipe - A comma-separated list of options to selectively no-op various parts of the driver.
LP_NUM_THREADS	""	LLVMpipe - An integer indicating how many threads to use for rendering. Zero (0) turns off threading completely. The default value is the number of CPU cores present.