mirror of https://gitlab.freedesktop.org/mesa/mesa
egl: Add _EGLResource and _EGLResourceType.
Resources are objects managed by a display. They can be linked to or unlinked from a display. It is also possible to check if a resource is valid.
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@ -205,4 +205,64 @@ _eglCheckDisplayHandle(EGLDisplay dpy)
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}
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/**
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* Return EGL_TRUE if the given resource is valid. That is, the display does
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* own the resource.
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*/
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EGLBoolean
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_eglCheckResource(_EGLResource *res, _EGLResourceType type, _EGLDisplay *dpy)
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{
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_EGLResource *list = dpy->ResourceLists[type];
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while (list) {
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if (res == list) {
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assert(list->Display == dpy);
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break;
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}
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list = list->Next;
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}
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return (list != NULL);
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}
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#endif /* !_EGL_SKIP_HANDLE_CHECK */
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/**
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* Link a resource to a display.
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*/
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void
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_eglLinkResource(_EGLResource *res, _EGLResourceType type, _EGLDisplay *dpy)
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{
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res->Display = dpy;
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res->Next = dpy->ResourceLists[type];
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dpy->ResourceLists[type] = res;
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}
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/**
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* Unlink a linked resource from its display.
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*/
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void
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_eglUnlinkResource(_EGLResource *res, _EGLResourceType type)
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{
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_EGLResource *prev;
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prev = res->Display->ResourceLists[type];
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if (prev != res) {
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while (prev) {
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if (prev->Next == res)
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break;
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prev = prev->Next;
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}
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assert(prev);
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prev->Next = res->Next;
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}
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else {
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res->Display->ResourceLists[type] = res->Next;
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}
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res->Next = NULL;
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res->Display = NULL;
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}
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@ -5,6 +5,24 @@
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#include "egldefines.h"
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enum _egl_resource_type {
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_EGL_RESOURCE_CONTEXT,
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_EGL_RESOURCE_SURFACE,
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_EGL_NUM_RESOURCES
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};
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/**
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* A resource of a display.
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*/
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struct _egl_resource
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{
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_EGLDisplay *Display;
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_EGLResource *Next;
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};
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/**
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* Optional EGL extensions info.
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*/
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@ -48,6 +66,8 @@ struct _egl_display
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/* lists of linked contexts and surface */
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_EGLContext *ContextList;
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_EGLSurface *SurfaceList;
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_EGLResource *ResourceLists[_EGL_NUM_RESOURCES];
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};
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@ -86,6 +106,10 @@ extern EGLBoolean
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_eglCheckDisplayHandle(EGLDisplay dpy);
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extern EGLBoolean
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_eglCheckResource(_EGLResource *res, _EGLResourceType type, _EGLDisplay *dpy);
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#else /* !_EGL_SKIP_HANDLE_CHECK */
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/* Only do a quick check. This is NOT standard compliant. */
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@ -97,6 +121,13 @@ _eglCheckDisplayHandle(EGLDisplay dpy)
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}
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static INLINE EGLBoolean
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_eglCheckResource(_EGLResource *res, _EGLResourceType type, _EGLDisplay *dpy)
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{
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return (res->Display == dpy);
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}
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#endif /* _EGL_SKIP_HANDLE_CHECK */
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@ -134,6 +165,24 @@ _eglIsDisplayLinked(_EGLDisplay *dpy)
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}
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extern void
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_eglLinkResource(_EGLResource *res, _EGLResourceType type, _EGLDisplay *dpy);
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extern void
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_eglUnlinkResource(_EGLResource *res, _EGLResourceType type);
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/**
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* Return true if the resource is linked.
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*/
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static INLINE EGLBoolean
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_eglIsResourceLinked(_EGLResource *res)
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{
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return (res->Display != NULL);
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}
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/**
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* Cast an unsigned int to a pointer.
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*/
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@ -8,6 +8,8 @@
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#include "eglcompiler.h"
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typedef enum _egl_resource_type _EGLResourceType;
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typedef struct _egl_api _EGLAPI;
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typedef struct _egl_config _EGLConfig;
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@ -22,6 +24,8 @@ typedef struct _egl_extensions _EGLExtensions;
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typedef struct _egl_mode _EGLMode;
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typedef struct _egl_resource _EGLResource;
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typedef struct _egl_screen _EGLScreen;
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typedef struct _egl_surface _EGLSurface;
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