The Abstract GPU is a cross platform low-level 3D graphics API.

For building the abstraction layer for Linux and Max OS/X, CMake is required. In Linux the Vulkan headers and libraries has to be installed. The following commands can be used for building:

mkdir build
cd build
cmake ..
make

The built files will be available at the dist folder. The samples will not be built by default. For building the samples, SDL2 has to be installed and the AGPU_BUILD_SAMPLES option has to be set. Or for simplicity, you have to use the following commands for building:

mkdir build
cd build
cmake -DAGPU_BUILD_SAMPLES=True ..
make

The Pharo bindings can be installed by running the following script in a playground:

Metacello new
   baseline: 'AbstractGPU';
   repository: 'github://desromech/abstract-gpu/tonel';
   load

This installation script takes care of automatically downloading a version of the platform specific library binary that is automatically being built on the CI server.

After loading the baseline, the following examples can be run in a Playground:

AGPUSampleImmediateRenderer1 new openInWindow.
AGPUSampleImmediateRenderer2 new openInWindow.
AGPUSampleImmediateRenderer3 new openInWindow.
AGPUSampleImmediateRenderer4 new openInWindow.

Since Squeak does not support repositories in the Tonel format, the installation requires a manual Tonel to Monticello conversion step that uses Pharo. For converting the Tonel sources, the following script must be executed:

./tonelToMonticello.sh

This script will download a Pharo image, and run the conversion script at scripts/tonelToMonticello.st which will convert the packages under tonel into Monticello packages under the mc folder. These converted packages can be loaded in Squeak by running the following script:

(Installer repository: 'http://source.squeak.org/FFI')
    install: 'FFI-Pools';
    install: 'FFI-Kernel'.
(Smalltalk at: #ExternalType) initialize.

"Replace with the path to the converted MC files, or make a symlink to this folder ;)"
Installer monticello directory: 'mc';
    install: 'AbstractGPU-CoreSqueak';
    install: 'AbstractGPU-GeneratedSqueak';
    install: 'AbstractGPU-Utility';
    install: 'AbstractGPU-Window';
    install: 'AbstractGPU-Samples'.

(Smalltalk at: #AGPUGeneratedDoIt) initializeBindings.

After loading the packages, the following examples can be run in a Workspace, after copying the Agpu libraries in a folder that is searched by the VM:

AGPUSampleImmediateRenderer1 new openInWindow.
AGPUSampleImmediateRenderer2 new openInWindow.
AGPUSampleImmediateRenderer3 new openInWindow.
AGPUSampleImmediateRenderer4 new openInWindow.