/************************************************************************** * * Copyright 2008 VMware, Inc. * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com> * Copyright 2010-2011 LunarG, Inc. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * **************************************************************************/ #ifndef EGLCONTEXT_INCLUDED #define EGLCONTEXT_INCLUDED #include "egltypedefs.h" #include "egldisplay.h" /** * "Base" class for device driver contexts. */ struct _egl_context { /* A context is a display resource */ _EGLResource Resource; /* The bound status of the context */ _EGLThreadInfo *Binding; _EGLSurface *DrawSurface; _EGLSurface *ReadSurface; _EGLConfig *Config; EGLint ClientAPI; /**< EGL_OPENGL_ES_API, EGL_OPENGL_API, EGL_OPENVG_API */ EGLint ClientMajorVersion; EGLint ClientMinorVersion; EGLint Flags; EGLint Profile; EGLint ResetNotificationStrategy; /* The real render buffer when a window surface is bound */ EGLint WindowRenderBuffer; }; PUBLIC EGLBoolean _eglInitContext(_EGLContext *ctx, _EGLDisplay *dpy, _EGLConfig *config, const EGLint *attrib_list); extern EGLBoolean _eglQueryContext(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx, EGLint attribute, EGLint *value); PUBLIC EGLBoolean _eglBindContext(_EGLContext *ctx, _EGLSurface *draw, _EGLSurface *read, _EGLContext **old_ctx, _EGLSurface **old_draw, _EGLSurface **old_read); /** * Increment reference count for the context. */ static INLINE _EGLContext * _eglGetContext(_EGLContext *ctx) { if (ctx) _eglGetResource(&ctx->Resource); return ctx; } /** * Decrement reference count for the context. */ static INLINE EGLBoolean _eglPutContext(_EGLContext *ctx) { return (ctx) ? _eglPutResource(&ctx->Resource) : EGL_FALSE; } /** * Link a context to its display and return the handle of the link. * The handle can be passed to client directly. */ static INLINE EGLContext _eglLinkContext(_EGLContext *ctx) { _eglLinkResource(&ctx->Resource, _EGL_RESOURCE_CONTEXT); return (EGLContext) ctx; } /** * Unlink a linked context from its display. * Accessing an unlinked context should generate EGL_BAD_CONTEXT error. */ static INLINE void _eglUnlinkContext(_EGLContext *ctx) { _eglUnlinkResource(&ctx->Resource, _EGL_RESOURCE_CONTEXT); } /** * Lookup a handle to find the linked context. * Return NULL if the handle has no corresponding linked context. */ static INLINE _EGLContext * _eglLookupContext(EGLContext context, _EGLDisplay *dpy) { _EGLContext *ctx = (_EGLContext *) context; if (!dpy || !_eglCheckResource((void *) ctx, _EGL_RESOURCE_CONTEXT, dpy)) ctx = NULL; return ctx; } /** * Return the handle of a linked context, or EGL_NO_CONTEXT. */ static INLINE EGLContext _eglGetContextHandle(_EGLContext *ctx) { _EGLResource *res = (_EGLResource *) ctx; return (res && _eglIsResourceLinked(res)) ? (EGLContext) ctx : EGL_NO_CONTEXT; } #endif /* EGLCONTEXT_INCLUDED */