glxinfo -B
./glslViewer --display /dev/dri/card1 test_andy_7.frag
RPI4 + Vulkan: 2 fps
./glslViewer --display /dev/dri/card1 test_andy_2.frag
RPI4 + Vulkan: 10 fps
Different shaders, cmd-lines etc. for testing GLSL on RPI 3 and 4
glxinfo -B
./glslViewer --display /dev/dri/card1 test_andy_7.frag
RPI4 + Vulkan: 2 fps
./glslViewer --display /dev/dri/card1 test_andy_2.frag
RPI4 + Vulkan: 10 fps
Different shaders, cmd-lines etc. for testing GLSL on RPI 3 and 4