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This call sequence
eglMakeCurrent(dpy, surf, surf, ctx1);
eglMakeCurrent(dpy, surf, surf, ctx2);
should be valid if ctx1 and ctx2 have the same client API and are not
current in another thread.
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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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We do not want them to be all over the places.
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Replace SET_CONFIG_ATTRIB/GET_CONFIG_ATTRIB by direct dereferences.
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Remove the hard-to-get-right _eglBindContextToSurfaces. As well as fix
an assertion failure from b90a3e7d8b1bcd412ddbf2a4803de2756dacd436 when
such call sequence is hit
eglMakeCurrent(dpy, surf1, surf1, ctx1);
eglMakeCurrent(dpy, surf2, surf2, ctx2);
eglMakeCurrent(dpy, surf1, surf1, ctx1);
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The API of the context was not checked against EGL_RENDERABLE_TYPE when there
was no attribute list. Move the check to _eglInitContext, and be verbose about
common mistakes (EGL_RENDERABLE_TYPE not set, EGL_CONTEXT_CLIENT_VERSION not
set, or eglBindAPI not called).
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These extensions allow an application to make a context current by
passing EGL_NO_SURFACE for the write and read surface in the call to
eglMakeCurrent. The motivation is that applications that only want to
render to client API targets (such as OpenGL framebuffer objects)
should not need to create a throw-away EGL surface just to get a
current context.
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The last commit incorrectly moved the code under an "else".
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0a82fadcdd0b6ebbc345c7c302da0e0efce40a98 seems to trigger a bug in
_eglBindContext. Rework the logics yet again. It is simpler, and
hopefully correct this time.
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There is no effective changes given how the function is called. It is
still not trivial, but it should be more readable and resemble
_eglBindContextToThread a lot.
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When a newly bound context is the same as the previously bound one,
_eglBindContextToThread should still return the context instead of NULL.
This gives the driver a chance to flush the context.
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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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Refactor attribute list parsing code to _eglParseContextAttribList. Add
a check to make sure the config supports the client API.
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They are either unit tests or to demonstrate how functions are supposed
to be used. The unit test is outdated and it should be better to take a
look at any of the working drivers to see how a function is used.
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A context can be bound to a surface just like it can be bound to a
thread. CurrentContext is a more consistent name.
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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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When no context or surface are given, the display is allowed to be
uninitialized. Most drivers cannot handle an uninitialized display.
But they are updated to at least throw a fatal message.
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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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Refactor _eglMakeCurrent into _eglCheckMakeCurrent,
_eglBindContextToSurface, and _eglBindContextToThread.
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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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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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Now that a current surface points back to its binding context, and a
current context points back to its binding thread, make sure there is no
dangling pointers. This commit reworks eglMakeCurrent, adds more checks
to avoid stealing context or surfaces from another thread, and correctly
destroys unlinked context and surfaces.
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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EGL allows multiple current contexts, as long as they are bound to
different client APIs.
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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Move memset() to proper place.
Added EGL_CONTEXT_CLIENT_VERSION query.
Fix bad return EGL_FALSE -> EGL_TRUE.
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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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Rename eglShowSurfaceMESA to eglShowScreenSurfaceMESA.
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Redo _eglInitContext() to do error checking, attribute list parsing, etc.
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Seems to be mostly working. Not all of egl API is implemented.
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