This adds gs_enum_adapters and gs_get_adapter_count to the opengl
backend and promotes these to multiplatform graphics functions.
However we need to make an internal device change, device_enum_adapters
must pass in the current device on opengl to ensure that adapter #0 is
the display adapter. We do this to avoid changes to plugins already
checking against obs_video_info.adapter which is always 0 and expected
to be the device OBS was initialized on.
The actual implementation reports the dri render node (or /Software).
This allows plugins to query non-video features of the adapters like
VA-API/NVENC/etc or other cross device functionality. `/Software` is
chosen to avoid opening random files in the current directory if its
passed along as a file path like the regular dri render nodes.
For now just tag all imported images with GS_RENDER, this may not work
for some images that were produced by some hardware other than the GPU
render engines. But since we don't import VA-API decoded frames we
probably won't run into this. And we need this to render into VA-API
frames destined for encoding.
Previously we would actually initialize a texture memory that would then
also have to be deleted when we bound the EGLImage to the texture during
dmabuf import.
Instead simply do not create the dummy texture memory. One odd thing is
that we must still query the texture to ensure its initialized or
binding the EGLImage will not work. So we leave the TEXTURE_MAX_LEVEL
check.
This makes screencapture up to 100x faster on discrete intel cards and
likely has some performance benefit for amd/integrated cards. Without
this dmabufs are actually slower than shared memory for these intel
cards.
This function is expected to fail fairly often as it is the tool for
checking if windows are mapped and have a valid pixmap in the linux
capture plugin. So reduce this error to a debug message to avoid
spamming release builds.
This replaces direct OpenGL calls to error handling helpers. Previously
this would cause errors to be misattributed to the next OpenGL functions
called.
Fixes DMA-BUF importing returning a texture on failure on KDE+NVIDIA.
The usual pattern of function signature is "array / n_elements",
but query_dmabuf_formats() does not follow it. Apply this order
to query_dmabuf_formats().
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.
Implement device_texture_create_from_dmabuf for EGL/X11 and EGL/Wayland.
The code is shared between them, in a new gl-egl-common.c file.
This is currently limited to a few common RGB(A) formats for now, which
seems to cover most use cases.
