Vulkan Vector Graphics

What is vkvg?

vkvg is a multiplatform c library for drawing 2D vector graphics with Vulkan.

Cairo was missing a Vulkan backend, so I decided to start one myself trying to keep my api as close to Cairo as possible.

Current status:

vkvg is in early development stage, 0.1 beta release is on the road.

• Fill (with stencil even-odd technic) and Stroke functional.
• Basic painting operation.
• Font system with caching operational.
• Linear Gradients.
• Line caps and joins.
• Context should be thread safe, extensive tests required.
• Image loading and writing with stb lib
• Test includes svg rendering with nanoSVG

Requirements:

• Vulkan
• FontConfig
• Freetype
• PkgConfig (currently used only to find harbfbuzz)
• Harfbuzz
• GLSLC: spirv compiler, included in LunarG SDK (building only)
• xxd: generate headers with precompiled shaders (building only)
• GLFW (only for running demo app)
• CMake

if glslc or xxd are not present, a precompiled version of the shaders is stored in the git tree.

Building

git clone https://github.com/jpbruyere/vkvg.git     # Download source code from github
cd vkvg                                             # Enter the source directory
git submodule update --init --recursive             # Dowload vkhelpers sources
mkdir build					    # Create build directory
cd build
cmake ..					    # Run CMake, optionaly setup glslc path
make						    # Run Make

Roadmap

• Radial gradients.
• Dashed lines.
• Operators.
• Improve stroke algorithms.
• Offscreen pattern building.
• Optimize vulkan memory allocations by sub-allocating from a single shared memory chunk per type.
• Optimize command submissions.
• Test SDF font rendering.
• Avoid line joins inside curves and arc.
• Structured unit testing.
• Perf and memory checks.
• Code clean and comment.
• Documentations.