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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
  4.  * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
  5.  * Copyright 2010 LunarG, Inc.
  6.  * All Rights Reserved.
  7.  *
  8.  * Permission is hereby granted, free of charge, to any person obtaining a
  9.  * copy of this software and associated documentation files (the
  10.  * "Software"), to deal in the Software without restriction, including
  11.  * without limitation the rights to use, copy, modify, merge, publish,
  12.  * distribute, sub license, and/or sell copies of the Software, and to
  13.  * permit persons to whom the Software is furnished to do so, subject to
  14.  * the following conditions:
  15.  *
  16.  * The above copyright notice and this permission notice (including the
  17.  * next paragraph) shall be included in all copies or substantial portions
  18.  * of the Software.
  19.  *
  20.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  23.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  25.  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  26.  * DEALINGS IN THE SOFTWARE.
  27.  *
  28.  **************************************************************************/
  29.  
  30.  
  31. #ifndef EGLSURFACE_INCLUDED
  32. #define EGLSURFACE_INCLUDED
  33.  
  34.  
  35. #include "egltypedefs.h"
  36. #include "egldisplay.h"
  37.  
  38.  
  39. /**
  40.  * "Base" class for device driver surfaces.
  41.  */
  42. struct _egl_surface
  43. {
  44.    /* A surface is a display resource */
  45.    _EGLResource Resource;
  46.  
  47.    /* The context that is currently bound to the surface */
  48.    _EGLContext *CurrentContext;
  49.  
  50.    _EGLConfig *Config;
  51.  
  52.    EGLint Type; /* one of EGL_WINDOW_BIT, EGL_PIXMAP_BIT or EGL_PBUFFER_BIT */
  53.  
  54.    /* attributes set by attribute list */
  55.    EGLint Width, Height;
  56.    EGLenum TextureFormat;
  57.    EGLenum TextureTarget;
  58.    EGLBoolean MipmapTexture;
  59.    EGLBoolean LargestPbuffer;
  60.    EGLenum RenderBuffer;
  61.    EGLenum VGAlphaFormat;
  62.    EGLenum VGColorspace;
  63.  
  64.    /* attributes set by eglSurfaceAttrib */
  65.    EGLint MipmapLevel;
  66.    EGLenum MultisampleResolve;
  67.    EGLenum SwapBehavior;
  68.  
  69.    EGLint HorizontalResolution, VerticalResolution;
  70.    EGLint AspectRatio;
  71.  
  72.    EGLint SwapInterval;
  73.  
  74.    /* True if the surface is bound to an OpenGL ES texture */
  75.    EGLBoolean BoundToTexture;
  76.  
  77.    EGLBoolean PostSubBufferSupportedNV;
  78. };
  79.  
  80.  
  81. PUBLIC EGLBoolean
  82. _eglInitSurface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
  83.                 _EGLConfig *config, const EGLint *attrib_list);
  84.  
  85.  
  86. extern EGLBoolean
  87. _eglQuerySurface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint attribute, EGLint *value);
  88.  
  89.  
  90. extern EGLBoolean
  91. _eglSurfaceAttrib(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint attribute, EGLint value);
  92.  
  93.  
  94. PUBLIC extern EGLBoolean
  95. _eglBindTexImage(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint buffer);
  96.  
  97.  
  98. extern EGLBoolean
  99. _eglSwapInterval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint interval);
  100.  
  101.  
  102. /**
  103.  * Increment reference count for the surface.
  104.  */
  105. static INLINE _EGLSurface *
  106. _eglGetSurface(_EGLSurface *surf)
  107. {
  108.    if (surf)
  109.       _eglGetResource(&surf->Resource);
  110.    return surf;
  111. }
  112.  
  113.  
  114. /**
  115.  * Decrement reference count for the surface.
  116.  */
  117. static INLINE EGLBoolean
  118. _eglPutSurface(_EGLSurface *surf)
  119. {
  120.    return (surf) ? _eglPutResource(&surf->Resource) : EGL_FALSE;
  121. }
  122.  
  123.  
  124. /**
  125.  * Link a surface to its display and return the handle of the link.
  126.  * The handle can be passed to client directly.
  127.  */
  128. static INLINE EGLSurface
  129. _eglLinkSurface(_EGLSurface *surf)
  130. {
  131.    printf("%s surface: %p\n", __FUNCTION__, surf);
  132.  
  133.    _eglLinkResource(&surf->Resource, _EGL_RESOURCE_SURFACE);
  134.    return (EGLSurface) surf;
  135. }
  136.  
  137.  
  138. /**
  139.  * Unlink a linked surface from its display.
  140.  * Accessing an unlinked surface should generate EGL_BAD_SURFACE error.
  141.  */
  142. static INLINE void
  143. _eglUnlinkSurface(_EGLSurface *surf)
  144. {
  145.    _eglUnlinkResource(&surf->Resource, _EGL_RESOURCE_SURFACE);
  146. }
  147.  
  148.  
  149. /**
  150.  * Lookup a handle to find the linked surface.
  151.  * Return NULL if the handle has no corresponding linked surface.
  152.  */
  153. static INLINE _EGLSurface *
  154. _eglLookupSurface(EGLSurface surface, _EGLDisplay *dpy)
  155. {
  156.    _EGLSurface *surf = (_EGLSurface *) surface;
  157.    if (!dpy || !_eglCheckResource((void *) surf, _EGL_RESOURCE_SURFACE, dpy))
  158.       surf = NULL;
  159.    return surf;
  160. }
  161.  
  162.  
  163. /**
  164.  * Return the handle of a linked surface, or EGL_NO_SURFACE.
  165.  */
  166. static INLINE EGLSurface
  167. _eglGetSurfaceHandle(_EGLSurface *surf)
  168. {
  169.    _EGLResource *res = (_EGLResource *) surf;
  170.    return (res && _eglIsResourceLinked(res)) ?
  171.       (EGLSurface) surf : EGL_NO_SURFACE;
  172. }
  173.  
  174.  
  175. #endif /* EGLSURFACE_INCLUDED */
  176.