offscreen image blurring tool

Based on the idea

build on debian/ubuntu

requirements:

• libglm-dev
• libglfw3-dev (only needed if build demo blur-exp)
• libglew-dev
• libgbm-dev
• libegl1-mesa-dev
• libgles2-mesa-dev
• libgdk-pixbuf2.0-dev

mkdir build && cd build && cmake .. && make

after build has done, use the binary blur_image to blur a image and save as file. show usage by ./blur_image -h example: ./blur_image -p 10 -r 11 /usr/share/wallpapers/deepin/Garden\ In\ The\ Autumn.jpg -o out.jpg

note: if you run it with a X Server running (which is the most probable case), add sudo at the front. or you can use render node to do blurring without privilege like

./blur_image -d /dev/dri/renderD128 -p 6 -r 7 /usr/share/wallpapers/deepin/Garden\ In\ The\ Autumn.jpg -o out.jpg 

in case if you want to build demo use cmake -DBUILD_DEMO=on .. instead and after build finished, use blur-exps to test blurring with windowing system.