src/egl/main/eglsurface.h

   1 #ifndef EGLSURFACE_INCLUDED
   2 #define EGLSURFACE_INCLUDED
   3
   4
   5 #include "egltypedefs.h"
   6 #include "egldisplay.h"
   7
   8
   9 /**
  10  * "Base" class for device driver surfaces.
  11  */
  12 struct _egl_surface
  13 {
  14    /* A surface is a display resource */
  15    _EGLResource Resource;
  16
  17    /* The context that is currently bound to the surface */
  18    _EGLContext *CurrentContext;
  19
  20    _EGLConfig *Config;
  21
  22    EGLint Type; /* one of EGL_WINDOW_BIT, EGL_PIXMAP_BIT or EGL_PBUFFER_BIT */
  23
  24    /* attributes set by attribute list */
  25    EGLint Width, Height;
  26    EGLenum TextureFormat;
  27    EGLenum TextureTarget;
  28    EGLBoolean MipmapTexture;
  29    EGLBoolean LargestPbuffer;
  30    EGLenum RenderBuffer;
  31    EGLenum VGAlphaFormat;
  32    EGLenum VGColorspace;
  33
  34    /* attributes set by eglSurfaceAttrib */
  35    EGLint MipmapLevel;
  36    EGLenum MultisampleResolve;
  37    EGLenum SwapBehavior;
  38
  39    EGLint HorizontalResolution, VerticalResolution;
  40    EGLint AspectRatio;
  41
  42    EGLint SwapInterval;
  43
  44    /* True if the surface is bound to an OpenGL ES texture */
  45    EGLBoolean BoundToTexture;
  46 };
  47
  48
  49 PUBLIC EGLBoolean
  50 _eglInitSurface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
  51                 _EGLConfig *config, const EGLint *attrib_list);
  52
  53
  54 extern EGLBoolean
  55 _eglQuerySurface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint attribute, EGLint *value);
  56
  57
  58 extern EGLBoolean
  59 _eglSurfaceAttrib(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint attribute, EGLint value);
  60
  61
  62 PUBLIC extern EGLBoolean
  63 _eglBindTexImage(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint buffer);
  64
  65
  66 extern EGLBoolean
  67 _eglSwapInterval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint interval);
  68
  69
  70 /**
  71  * Increment reference count for the surface.
  72  */
  73 static INLINE _EGLSurface *
  74 _eglGetSurface(_EGLSurface *surf)
  75 {
  76    if (surf)
  77       _eglGetResource(&surf->Resource);
  78    return surf;
  79 }
  80
  81
  82 /**
  83  * Decrement reference count for the surface.
  84  */
  85 static INLINE EGLBoolean
  86 _eglPutSurface(_EGLSurface *surf)
  87 {
  88    return (surf) ? _eglPutResource(&surf->Resource) : EGL_FALSE;
  89 }
  90
  91
  92 /**
  93  * Link a surface to its display and return the handle of the link.
  94  * The handle can be passed to client directly.
  95  */
  96 static INLINE EGLSurface
  97 _eglLinkSurface(_EGLSurface *surf)
  98 {
  99    _eglLinkResource(&surf->Resource, _EGL_RESOURCE_SURFACE);
 100    return (EGLSurface) surf;
 101 }
 102
 103
 104 /**
 105  * Unlink a linked surface from its display.
 106  * Accessing an unlinked surface should generate EGL_BAD_SURFACE error.
 107  */
 108 static INLINE void
 109 _eglUnlinkSurface(_EGLSurface *surf)
 110 {
 111    _eglUnlinkResource(&surf->Resource, _EGL_RESOURCE_SURFACE);
 112 }
 113
 114
 115 /**
 116  * Lookup a handle to find the linked surface.
 117  * Return NULL if the handle has no corresponding linked surface.
 118  */
 119 static INLINE _EGLSurface *
 120 _eglLookupSurface(EGLSurface surface, _EGLDisplay *dpy)
 121 {
 122    _EGLSurface *surf = (_EGLSurface *) surface;
 123    if (!dpy || !_eglCheckResource((void *) surf, _EGL_RESOURCE_SURFACE, dpy))
 124       surf = NULL;
 125    return surf;
 126 }
 127
 128
 129 /**
 130  * Return the handle of a linked surface, or EGL_NO_SURFACE.
 131  */
 132 static INLINE EGLSurface
 133 _eglGetSurfaceHandle(_EGLSurface *surf)
 134 {
 135    _EGLResource *res = (_EGLResource *) surf;
 136    return (res && _eglIsResourceLinked(res)) ?
 137       (EGLSurface) surf : EGL_NO_SURFACE;
 138 }
 139
 140
 141 #endif /* EGLSURFACE_INCLUDED */