0ea1feabd9
This PR adds HDR support for Windows for `VK_COLOR_SPACE_EXTENDED_SRGB_LINEAR_EXT` on `VK_FORMAT_R16G16B16A16_SFLOAT` swapchains . For nonlinear surface formats (sRGB and extended sRGB) the back buffer is blit into the swapchain, When VK_COLOR_SPACE_EXTENDED_SRGB_LINEAR_EXT is used as surface format a compute shader is used to flip and invert the gamma. SDR white level is updated from a few window event changes, but actually none of them immediately respond to SDR white level changes in the system. That requires using the WinRT API, which we don't do so far. Current limitations: - Intel GPU support - Dual GPU support In the future we may add controls inside Blender for absolute HDR nits, across different platforms. But this makes behavior closer to macOS. See !144565 for details Co-authored-by: Brecht Van Lommel <brecht@blender.org> Pull Request: https://projects.blender.org/blender/blender/pulls/144717
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