egl: add EGL_NV_post_sub_buffer

v2: Handle EGL_POST_SUB_BUFFER_SUPPORTED_NV in
    _eglParseSurfaceAttribList()

Signed-off-by: Fredrik Höglund <fredrik@kde.org>

[olv: remove #ifdef checks]

src/egl/main/eglapi.c

@@ -941,6 +941,7 @@ eglGetProcAddress(const char *procname)
       { "eglBindWaylandDisplayWL", (_EGLProc) eglBindWaylandDisplayWL },
       { "eglUnbindWaylandDisplayWL", (_EGLProc) eglUnbindWaylandDisplayWL },
 #endif
+      { "eglPostSubBufferNV", (_EGLProc) eglPostSubBufferNV },
       { NULL, NULL }
    };
    EGLint i;
@@ -1540,3 +1541,23 @@ eglUnbindWaylandDisplayWL(EGLDisplay dpy, struct wl_display *display)
    RETURN_EGL_EVAL(disp, ret);
 }
 #endif
+
+
+EGLBoolean EGLAPIENTRY
+eglPostSubBufferNV(EGLDisplay dpy, EGLSurface surface,
+                   EGLint x, EGLint y, EGLint width, EGLint height)
+{
+   _EGLDisplay *disp = _eglLockDisplay(dpy);
+   _EGLSurface *surf = _eglLookupSurface(surface, disp);
+   _EGLDriver *drv;
+   EGLBoolean ret;
+
+   _EGL_CHECK_SURFACE(disp, surf, EGL_FALSE, drv);
+
+   if (!disp->Extensions.NV_post_sub_buffer)
+      RETURN_EGL_EVAL(disp, EGL_FALSE);
+
+   ret = drv->API.PostSubBufferNV(drv, disp, surf, x, y, width, height);
+
+   RETURN_EGL_EVAL(disp, ret);
+}

src/egl/main/eglapi.h

@@ -125,6 +125,8 @@ typedef EGLBoolean (*BindWaylandDisplayWL_t)(_EGLDriver *drv, _EGLDisplay *disp,
 typedef EGLBoolean (*UnbindWaylandDisplayWL_t)(_EGLDriver *drv, _EGLDisplay *disp, struct wl_display *display);
 #endif
 
+typedef EGLBoolean (*PostSubBufferNV_t)(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surface, EGLint x, EGLint y, EGLint width, EGLint height);
+
 /**
  * The API dispatcher jumps through these functions
  */
@@ -198,6 +200,8 @@ struct _egl_api
    BindWaylandDisplayWL_t BindWaylandDisplayWL;
    UnbindWaylandDisplayWL_t UnbindWaylandDisplayWL;
 #endif
+
+   PostSubBufferNV_t PostSubBufferNV;
 };
 
 #endif /* EGLAPI_INCLUDED */

src/egl/main/egldisplay.h

@@ -111,6 +111,8 @@ struct _egl_extensions
    EGLBoolean NOK_texture_from_pixmap;
 
    EGLBoolean ANDROID_image_native_buffer;
+
+   EGLBoolean NV_post_sub_buffer;
 };
 
 

src/egl/main/eglmisc.c

@@ -115,6 +115,8 @@ _eglUpdateExtensionsString(_EGLDisplay *dpy)
    _EGL_CHECK_EXTENSION(NOK_texture_from_pixmap);
 
    _EGL_CHECK_EXTENSION(ANDROID_image_native_buffer);
+
+   _EGL_CHECK_EXTENSION(NV_post_sub_buffer);
 #undef _EGL_CHECK_EXTENSION
 }
 

src/egl/main/eglsurface.c

@@ -170,6 +170,18 @@ _eglParseSurfaceAttribList(_EGLSurface *surf, const EGLint *attrib_list)
          }
          surf->RenderBuffer = val;
          break;
+      case EGL_POST_SUB_BUFFER_SUPPORTED_NV:
+         if (!dpy->Extensions.NV_post_sub_buffer ||
+             type != EGL_WINDOW_BIT) {
+            err = EGL_BAD_ATTRIBUTE;
+            break;
+         }
+         if (val != EGL_TRUE && val != EGL_FALSE) {
+            err = EGL_BAD_PARAMETER;
+            break;
+         }
+         surf->PostSubBufferSupportedNV = val;
+         break;
       /* pbuffer surface attributes */
       case EGL_WIDTH:
          if (type != EGL_PBUFFER_BIT) {
@@ -323,6 +335,8 @@ _eglInitSurface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
    surf->VerticalResolution = EGL_UNKNOWN;
    surf->AspectRatio = EGL_UNKNOWN;
 
+   surf->PostSubBufferSupportedNV = EGL_FALSE;
+
    /* the default swap interval is 1 */
    _eglClampSwapInterval(surf, 1);
 
@@ -392,6 +406,9 @@ _eglQuerySurface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface,
    case EGL_VG_COLORSPACE:
       *value = surface->VGColorspace;
       break;
+   case EGL_POST_SUB_BUFFER_SUPPORTED_NV:
+      *value = surface->PostSubBufferSupportedNV;
+      break;
    default:
       _eglError(EGL_BAD_ATTRIBUTE, "eglQuerySurface");
       return EGL_FALSE;

src/egl/main/eglsurface.h

@@ -73,6 +73,8 @@ struct _egl_surface
 
    /* True if the surface is bound to an OpenGL ES texture */
    EGLBoolean BoundToTexture;
+
+   EGLBoolean PostSubBufferSupportedNV;
 };