src/egl/main/eglsurface.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 VMware, Inc.
   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 #include "c99_compat.h"
  35
  36 #include "egltypedefs.h"
  37 #include "egldisplay.h"
  38
  39
  40 #ifdef __cplusplus
  41 extern "C" {
  42 #endif
  43
  44 /**
  45  * "Base" class for device driver surfaces.
  46  */
  47 struct _egl_surface
  48 {
  49    /* A surface is a display resource */
  50    _EGLResource Resource;
  51
  52    /* The context that is currently bound to the surface */
  53    _EGLContext *CurrentContext;
  54
  55    _EGLConfig *Config;
  56
  57    EGLint Type; /* one of EGL_WINDOW_BIT, EGL_PIXMAP_BIT or EGL_PBUFFER_BIT */
  58
  59    /* The native surface is lost. The EGL spec requires certain functions
  60     * to generate EGL_BAD_NATIVE_WINDOW when given this surface.
  61     */
  62    EGLBoolean Lost;
  63
  64    /* attributes set by attribute list */
  65    EGLint Width, Height;
  66    EGLenum TextureFormat;
  67    EGLenum TextureTarget;
  68    EGLBoolean MipmapTexture;
  69    EGLBoolean LargestPbuffer;
  70    EGLenum RenderBuffer;
  71    EGLenum VGAlphaFormat;
  72    EGLenum VGColorspace;
  73    EGLenum GLColorspace;
  74
  75    /* attributes set by eglSurfaceAttrib */
  76    EGLint MipmapLevel;
  77    EGLenum MultisampleResolve;
  78    EGLenum SwapBehavior;
  79
  80    EGLint HorizontalResolution, VerticalResolution;
  81    EGLint AspectRatio;
  82
  83    EGLint SwapInterval;
  84
  85    /* True if the surface is bound to an OpenGL ES texture */
  86    EGLBoolean BoundToTexture;
  87
  88    EGLBoolean PostSubBufferSupportedNV;
  89 };
  90
  91
  92 extern EGLBoolean
  93 _eglInitSurface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
  94                 _EGLConfig *config, const EGLint *attrib_list);
  95
  96
  97 extern EGLBoolean
  98 _eglQuerySurface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint attribute, EGLint *value);
  99
 100
 101 extern EGLBoolean
 102 _eglSurfaceAttrib(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint attribute, EGLint value);
 103
 104
 105 extern EGLBoolean
 106 _eglBindTexImage(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint buffer);
 107
 108 extern EGLBoolean
 109 _eglReleaseTexImage(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer);
 110
 111
 112 extern EGLBoolean
 113 _eglSwapInterval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint interval);
 114
 115
 116 /**
 117  * Increment reference count for the surface.
 118  */
 119 static inline _EGLSurface *
 120 _eglGetSurface(_EGLSurface *surf)
 121 {
 122    if (surf)
 123       _eglGetResource(&surf->Resource);
 124    return surf;
 125 }
 126
 127
 128 /**
 129  * Decrement reference count for the surface.
 130  */
 131 static inline EGLBoolean
 132 _eglPutSurface(_EGLSurface *surf)
 133 {
 134    return (surf) ? _eglPutResource(&surf->Resource) : EGL_FALSE;
 135 }
 136
 137
 138 /**
 139  * Link a surface to its display and return the handle of the link.
 140  * The handle can be passed to client directly.
 141  */
 142 static inline EGLSurface
 143 _eglLinkSurface(_EGLSurface *surf)
 144 {
 145    _eglLinkResource(&surf->Resource, _EGL_RESOURCE_SURFACE);
 146    return (EGLSurface) surf;
 147 }
 148
 149
 150 /**
 151  * Unlink a linked surface from its display.
 152  * Accessing an unlinked surface should generate EGL_BAD_SURFACE error.
 153  */
 154 static inline void
 155 _eglUnlinkSurface(_EGLSurface *surf)
 156 {
 157    _eglUnlinkResource(&surf->Resource, _EGL_RESOURCE_SURFACE);
 158 }
 159
 160
 161 /**
 162  * Lookup a handle to find the linked surface.
 163  * Return NULL if the handle has no corresponding linked surface.
 164  */
 165 static inline _EGLSurface *
 166 _eglLookupSurface(EGLSurface surface, _EGLDisplay *dpy)
 167 {
 168    _EGLSurface *surf = (_EGLSurface *) surface;
 169    if (!dpy || !_eglCheckResource((void *) surf, _EGL_RESOURCE_SURFACE, dpy))
 170       surf = NULL;
 171    return surf;
 172 }
 173
 174
 175 /**
 176  * Return the handle of a linked surface, or EGL_NO_SURFACE.
 177  */
 178 static inline EGLSurface
 179 _eglGetSurfaceHandle(_EGLSurface *surf)
 180 {
 181    _EGLResource *res = (_EGLResource *) surf;
 182    return (res && _eglIsResourceLinked(res)) ?
 183       (EGLSurface) surf : EGL_NO_SURFACE;
 184 }
 185
 186
 187 #ifdef __cplusplus
 188 }
 189 #endif
 190
 191 #endif /* EGLSURFACE_INCLUDED */