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egl: Clarify IsLinked and IsBound.

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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.
This commit is contained in:
Chia-I Wu 2010-02-05 11:34:53 +08:00
parent fc5ca85a63
commit b31255fbfd
2 changed files with 12 additions and 0 deletions
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6
src/egl/main/eglcontext.h
View file

@ -60,6 +60,9 @@ _eglCopyContextMESA(_EGLDriver *drv, EGLDisplay dpy, EGLContext source, EGLConte
/** /**
* Return true if the context is bound to a thread. * Return true if the context is bound to a thread.
*
* The binding is considered a reference to the context. Drivers should not
* destroy a context when it is bound.
*/ */
static INLINE EGLBoolean static INLINE EGLBoolean
_eglIsContextBound(_EGLContext *ctx) _eglIsContextBound(_EGLContext *ctx)
@ -119,6 +122,9 @@ _eglGetContextHandle(_EGLContext *ctx)
/** /**
* Return true if the context is linked to a display. * Return true if the context is linked to a display.
*
* The link is considered a reference to the context (the display is owning the
* context). Drivers should not destroy a context when it is linked.
*/ */
static INLINE EGLBoolean static INLINE EGLBoolean
_eglIsContextLinked(_EGLContext *ctx) _eglIsContextLinked(_EGLContext *ctx)

6
src/egl/main/eglsurface.h
View file

@ -107,6 +107,9 @@ _eglCreatePbufferFromClientBuffer(_EGLDriver *drv, _EGLDisplay *dpy,
/** /**
* Return true if there is a context bound to the surface. * Return true if there is a context bound to the surface.
*
* The binding is considered a reference to the surface. Drivers should not
* destroy a surface when it is bound.
*/ */
static INLINE EGLBoolean static INLINE EGLBoolean
_eglIsSurfaceBound(_EGLSurface *surf) _eglIsSurfaceBound(_EGLSurface *surf)
@ -166,6 +169,9 @@ _eglGetSurfaceHandle(_EGLSurface *surf)
/** /**
* Return true if the surface is linked to a display. * Return true if the surface is linked to a display.
*
* The link is considered a reference to the surface (the display is owning the
* surface). Drivers should not destroy a surface when it is linked.
*/ */
static INLINE EGLBoolean static INLINE EGLBoolean
_eglIsSurfaceLinked(_EGLSurface *surf) _eglIsSurfaceLinked(_EGLSurface *surf)