0852ecd844
A test case that compiles all the GLSL shaders for workbench, gpencil, overlay and some of eevee. Compilation is still platform dependent, but when run on a test-farm with different hardware we will be able to detect GLSL compilation errors early on. The test will be compiled when `WITH_GTEST` and `WITH_OPENGL_DRAW_TESTS` are On. For eevee only the shaders inside eevee_shaders.c are included. EEVEE has some shaders located inside the submodule. They aren't accessible to the outside and aren't added to the test case. We should see how we want to add them. For the test cases it is better to move them to eevee_shaders.c, but for eevee perspective it is better to keep them in the submodule. Keeping them in the submodule could lead to situations that is harder to test. as the shader could already have been initialized. Reviewed By: Clément Foucault Differential Revision: https://developer.blender.org/D8667