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Remove all _egl<Res>IsLinked and _egl<Res>IsBound. Update
_eglBindContext and drivers to do reference counting.
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This is a really simple mechanism. There is no atomicity and the caller
is expected to hold the display lock.
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All display resources are already initialized with a display. Linking
simply links a resource to its display.
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We do not want them to be all over the places.
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Both a link and a binding creates a reference to the resource. Drivers
should not destroy the resource when there is a reference. The
difference is better described in doc/egl.html.
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Change _eglInitSurface, _eglInitContext, and _eglInitImage to take an
_EGLDisplay instead of an _EGLDriver. This is a more natural form, and
plus, the display encodes information such as the extensions supported
that might be required for attribute list parsing.
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Mainly to remove eglcurrent.h and egldisplay.h from eglglobals.h.
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_eglMakeCurrent is a big hammer that is not easy to use. Migrate
drivers to use _eglBindContext and un-export _eglMakeCurrent.
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It works similar to _eglMakeCurrent, except that the old context and
surfaces are returned instead of destroyed. _eglMakeCurrent is now
calling the new _eglBindContext.
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This emphasizes the fact that the resource to be checked could really be
invalid and have an unknown type.
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Turn _EGLSurface and _EGLContext into _EGLResource so that they can be
managed uniformly.
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Move functions to where they should be. There should be no real change
here.
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Mark EGL API and driver functions as PUBLIC.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
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Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
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The motivation is so that drivers do not need to look up and check for
bad display, context, and etc. It also becomes unnecessary for drivers
to call the link functions.
This commit makes eglapi.[ch] do the lookup and check. As a result, the
driver API is overhauled, and almost all sources and drivers need
update. The updates are mainly find and replace with human brains.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
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IsBound tells if a context or surface is current. What it does not tell
is, to which thread a context is current, or to which context a surface
is current. This commit replaces IsBound by a pointer to the binding
thread or context.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
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A context or surface that is neither linked to a display nor current to
a thread should be destroyed. Therefore, an unlinked context or surface
implies a pending delete automatically.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
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This commit uses the newly introduced link functions to manage EGL
contexts and surfaces. As a result of this, the API for drivers are
changed. All drivers are updated for the change.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
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EGL contexts and surfaces are resources of displays. They should be
managed by displays. This commit adds a bunch of functions to
egldisplay.c to help establish the links between contexts/surfaces and
displays. How links are established is considered opaque outside
display. Functions like _eglGetSurfaceHandle or _eglLookupSurface are
therefore moved to egldisplay.c, with some small modifications.
The idea is also extended to display. That is, displays need to link to
themselves to be looked up.
This commit only adds the functions. A commit to use them should
follow.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
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This commit introduces a "current" system to manage per-thread info. It
uses TLS, if GLX_USE_TLS is defined, or pthread, if PTHREADS is defined.
If none of them are defined, it uses a dummy implementation that is just
like before.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
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In EGL 1.4 the opaque EGLContext type is a pointer so we can just cast
between public EGLContext handles and private _EGLContext pointers.
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Redo _eglInitContext() to do error checking, attribute list parsing, etc.
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