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      1 /**************************************************************************
      2  *
      3  * Copyright 2008 VMware, Inc.
      4  * Copyright 2009-2010 Chia-I Wu <olvaffe (at) 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    /* attributes set by attribute list */
     60    EGLint Width, Height;
     61    EGLenum TextureFormat;
     62    EGLenum TextureTarget;
     63    EGLBoolean MipmapTexture;
     64    EGLBoolean LargestPbuffer;
     65    EGLenum RenderBuffer;
     66    EGLenum VGAlphaFormat;
     67    EGLenum VGColorspace;
     68    EGLenum GLColorspace;
     69 
     70    /* attributes set by eglSurfaceAttrib */
     71    EGLint MipmapLevel;
     72    EGLenum MultisampleResolve;
     73    EGLenum SwapBehavior;
     74 
     75    EGLint HorizontalResolution, VerticalResolution;
     76    EGLint AspectRatio;
     77 
     78    EGLint SwapInterval;
     79 
     80    /* True if the surface is bound to an OpenGL ES texture */
     81    EGLBoolean BoundToTexture;
     82 
     83    EGLBoolean PostSubBufferSupportedNV;
     84 };
     85 
     86 
     87 extern EGLBoolean
     88 _eglInitSurface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
     89                 _EGLConfig *config, const EGLint *attrib_list);
     90 
     91 
     92 extern EGLBoolean
     93 _eglQuerySurface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint attribute, EGLint *value);
     94 
     95 
     96 extern EGLBoolean
     97 _eglSurfaceAttrib(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint attribute, EGLint value);
     98 
     99 
    100 extern EGLBoolean
    101 _eglBindTexImage(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint buffer);
    102 
    103 extern EGLBoolean
    104 _eglReleaseTexImage(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer);
    105 
    106 
    107 extern EGLBoolean
    108 _eglSwapInterval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint interval);
    109 
    110 
    111 /**
    112  * Increment reference count for the surface.
    113  */
    114 static inline _EGLSurface *
    115 _eglGetSurface(_EGLSurface *surf)
    116 {
    117    if (surf)
    118       _eglGetResource(&surf->Resource);
    119    return surf;
    120 }
    121 
    122 
    123 /**
    124  * Decrement reference count for the surface.
    125  */
    126 static inline EGLBoolean
    127 _eglPutSurface(_EGLSurface *surf)
    128 {
    129    return (surf) ? _eglPutResource(&surf->Resource) : EGL_FALSE;
    130 }
    131 
    132 
    133 /**
    134  * Link a surface to its display and return the handle of the link.
    135  * The handle can be passed to client directly.
    136  */
    137 static inline EGLSurface
    138 _eglLinkSurface(_EGLSurface *surf)
    139 {
    140    _eglLinkResource(&surf->Resource, _EGL_RESOURCE_SURFACE);
    141    return (EGLSurface) surf;
    142 }
    143 
    144 
    145 /**
    146  * Unlink a linked surface from its display.
    147  * Accessing an unlinked surface should generate EGL_BAD_SURFACE error.
    148  */
    149 static inline void
    150 _eglUnlinkSurface(_EGLSurface *surf)
    151 {
    152    _eglUnlinkResource(&surf->Resource, _EGL_RESOURCE_SURFACE);
    153 }
    154 
    155 
    156 /**
    157  * Lookup a handle to find the linked surface.
    158  * Return NULL if the handle has no corresponding linked surface.
    159  */
    160 static inline _EGLSurface *
    161 _eglLookupSurface(EGLSurface surface, _EGLDisplay *dpy)
    162 {
    163    _EGLSurface *surf = (_EGLSurface *) surface;
    164    if (!dpy || !_eglCheckResource((void *) surf, _EGL_RESOURCE_SURFACE, dpy))
    165       surf = NULL;
    166    return surf;
    167 }
    168 
    169 
    170 /**
    171  * Return the handle of a linked surface, or EGL_NO_SURFACE.
    172  */
    173 static inline EGLSurface
    174 _eglGetSurfaceHandle(_EGLSurface *surf)
    175 {
    176    _EGLResource *res = (_EGLResource *) surf;
    177    return (res && _eglIsResourceLinked(res)) ?
    178       (EGLSurface) surf : EGL_NO_SURFACE;
    179 }
    180 
    181 
    182 #ifdef __cplusplus
    183 }
    184 #endif
    185 
    186 #endif /* EGLSURFACE_INCLUDED */
    187