As clang and gcc use "default" visibility (as in "not hidden") when
no visibility is specified, all functions are implicitly exported.
When changing default visibility to "hidden", the corresponding symbols
are not exposed anymore and linking fails. This PR updates all
functions signatures that were added in recent commits but not set to
be EXPORTed.
Also makes required OpenGL imports for texture sharing on macOS
mandatory.
Some users stream projectors, so don't let them tear. Use the waitable
object to check the flip queue, and only flip if there's space.
Metal and Vulkan can probably perform similar flip throttling once OBS
starts using them.
When sharing DMA-BUFs it is required the announce the underlying
hardware capabilities via supported modifiers.
Add new device_query_dmabuf_capabilities vfunc to gs_exports and connect it
to the egl implementation stubs in the supported render platforms. Add a new
public method gs_query_dmabuf_capabilities() that calls the vfunc above.
Add new device_query_dmabuf_modifiers vfunc to gs_exports and connect it
to the egl implementation in the supported render platforms. Add a new
public method gs_query_dmabuf_modifiers() that calls the vfunc above.
Adds support for using shared textures that were made with the
D3D11_RESOURCE_MISC_SHARED_NTHANDLE flag.
This increases the minimum required Windows version to Windows 8 or the
Platform Update for Windows 7. As official support is only for Win 8+
this does not change official support.
Add gs_image_alpha_mode enum for requested alpha handling: straight,
premultiplied with SRGB conversion, and just premultiplied. Both
premultiplied settings behave the same if the image is not SRGB, linear
is assumed.
Add gs_image_file3_t to store the alpha mode.
Add srgb.h file with helper functions.
Clean up vec4.h to use helpers, and remove unused functionality.
Update FFmpeg image loader to perform premultiplication on load.
This adds the drmbuf format as a parameter separate from the obs texture
format that will be used. drmbuf's may have a variety of formats that we
need to pass correctly to get a usable texture which may correspond to
multi-platform texture formats.
DMA-BUF is a widespread Linux buffer sharing mechanism. It is what's
commonly used zero-copy screen sharing by Wayland compositors.
Add a new 'device_texture_create_from_dmabuf' vfunc to gs_exports,
and stub implementations to libobs-opengl. Add a new public method
gs_texture_create_from_dmabuf() that calls this vfunc.