Add unit test of sRGB. Update helper functions to accomodate uchar4 and float4. Change-Id: Ib604cf603ab63b908130ef1c562c53d42328bacf
- Port image tests to catch2. - Disable 3D filter test for gfx9a. - Some other improvement - Temporarily disable linear filter tests on Windows Change-Id: Ieeddac9f8c50aa9b6b12ca9d8fd792a51973b8ca