Kazashi Yoshioka
a64877f045
This PR adds pre-checks when enabling validation layers. For validation layers to work some platforms require that the Vulkan SDK is installed. Validation layers are activated when running blender with `--debug-gpu`. Sometimes we expect users to run with `--debug-gpu` for narrowing down an issue and we cannot expect them to have the Vulkan SDK installed. This patch will check if the `VK_LAYER_PATH` is available and that the configuration file of the validation layer is present. If this isn't the case we don't activate the requested validation layer. Pull Request: blender/blender#105922