1 files changed, 186 insertions, 9 deletions

diff --git a/src/gallium/winsys/egl_xlib/egl_xlib.c b/src/gallium/winsys/egl_xlib/egl_xlib.c
index e1ddcae97ba..f409a3fd6ba 100644
--- a/src/gallium/winsys/egl_xlib/egl_xlib.c
+++ b/src/gallium/winsys/egl_xlib/egl_xlib.c
@@ -82,6 +82,7 @@ struct xlib_egl_surface
 {
    _EGLSurface Base;   /**< base class */
 
+   /* These are set for window surface */
    Display *Dpy;  /**< The X Display of the window */
    Window Win;    /**< The user-created window ID */
    GC Gc;
@@ -101,7 +102,7 @@ xlib_egl_driver(_EGLDriver *drv)
 }
 
 
-static struct xlib_egl_surface *
+static INLINE struct xlib_egl_surface *
 lookup_surface(EGLSurface surf)
 {
    _EGLSurface *surface = _eglLookupSurface(surf);
@@ -109,10 +110,10 @@ lookup_surface(EGLSurface surf)
 }
 
 
-static struct xlib_egl_context *
-lookup_context(EGLContext surf)
+static INLINE struct xlib_egl_context *
+lookup_context(EGLContext ctx)
 {
-   _EGLContext *context = _eglLookupContext(surf);
+   _EGLContext *context = _eglLookupContext(ctx);
    return (struct xlib_egl_context *) context;
 }
 
@@ -180,7 +181,9 @@ create_configs(_EGLDriver *drv, EGLDisplay dpy)
       SET_CONFIG_ATTRIB(config, EGL_NATIVE_RENDERABLE, EGL_FALSE);
       SET_CONFIG_ATTRIB(config, EGL_CONFORMANT, all_apis);
       SET_CONFIG_ATTRIB(config, EGL_RENDERABLE_TYPE, all_apis);
-      SET_CONFIG_ATTRIB(config, EGL_SURFACE_TYPE, EGL_WINDOW_BIT);
+      SET_CONFIG_ATTRIB(config, EGL_SURFACE_TYPE, EGL_WINDOW_BIT | EGL_PBUFFER_BIT);
+      SET_CONFIG_ATTRIB(config, EGL_BIND_TO_TEXTURE_RGBA, EGL_TRUE);
+      SET_CONFIG_ATTRIB(config, EGL_BIND_TO_TEXTURE_RGB, EGL_TRUE);
 
       _eglAddConfig(disp, config);
    }
@@ -264,7 +267,13 @@ static void
 check_and_update_buffer_size(struct xlib_egl_surface *surface)
 {
    uint width, height;
-   get_drawable_size(surface->Dpy, surface->Win, &width, &height);
+   if (surface->Base.Type == EGL_PBUFFER_BIT) {
+      width = surface->Base.Width;
+      height = surface->Base.Height;
+   }
+   else {
+      get_drawable_size(surface->Dpy, surface->Win, &width, &height);
+   }
    st_resize_framebuffer(surface->Framebuffer, width, height);
    surface->Base.Width = width;
    surface->Base.Height = height;
@@ -281,6 +290,9 @@ display_surface(struct pipe_winsys *pws,
    XImage *ximage;
    void *data;
 
+   if (xsurf->Base.Type == EGL_PBUFFER_BIT)
+      return;
+
    ximage = XCreateImage(xsurf->Dpy,
                          xsurf->VisInfo.visual,
                          xsurf->VisInfo.depth,
@@ -382,7 +394,7 @@ xlib_eglDestroyContext(_EGLDriver *drv, EGLDisplay dpy, EGLContext ctx)
    struct xlib_egl_context *context = lookup_context(ctx);
    if (context) {
       _eglUnlinkContext(&context->Base);
-      if (!context->Base.IsBound) {
+      if (!_eglIsContextBound(&context->Base)) {
          /* API-dependent clean-up */
          switch (context->Base.ClientAPI) {
          case EGL_OPENGL_ES_API:
@@ -415,10 +427,14 @@ xlib_eglMakeCurrent(_EGLDriver *drv, EGLDisplay dpy,
    struct xlib_egl_context *context = lookup_context(ctx);
    struct xlib_egl_surface *draw_surf = lookup_surface(draw);
    struct xlib_egl_surface *read_surf = lookup_surface(read);
+   struct st_context *oldctx = st_get_current();
 
    if (!_eglMakeCurrent(drv, dpy, draw, read, context))
       return EGL_FALSE;
 
+   /* Flush before switching context.  Check client API? */
+   if (oldctx)
+      st_flush(oldctx, PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
    st_make_current((context ? context->Context : NULL),
                    (draw_surf ? draw_surf->Framebuffer : NULL),
                    (read_surf ? read_surf->Framebuffer : NULL));
@@ -527,14 +543,92 @@ xlib_eglCreateWindowSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
 }
 
 
+static EGLSurface
+xlib_eglCreatePbufferSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
+                             const EGLint *attrib_list)
+{
+   struct xlib_egl_driver *xdrv = xlib_egl_driver(drv);
+   _EGLDisplay *disp = _eglLookupDisplay(dpy);
+   _EGLConfig *conf = _eglLookupConfig(drv, dpy, config);
+   struct xlib_egl_surface *surf;
+   __GLcontextModes visual;
+   uint width, height;
+   EGLBoolean bind_texture;
+
+   if (!disp) {
+      _eglError(EGL_BAD_DISPLAY, "eglCreatePbufferSurface");
+      return EGL_NO_SURFACE;
+   }
+   if (!conf) {
+      _eglError(EGL_BAD_CONFIG, "eglCreatePbufferSurface");
+      return EGL_NO_SURFACE;
+   }
+
+   surf = CALLOC_STRUCT(xlib_egl_surface);
+   if (!surf) {
+      _eglError(EGL_BAD_ALLOC, "eglCreatePbufferSurface");
+      return EGL_NO_SURFACE;
+   }
+
+   if (!_eglInitSurface(drv, &surf->Base, EGL_PBUFFER_BIT,
+                        conf, attrib_list)) {
+      free(surf);
+      return EGL_NO_SURFACE;
+   }
+   if (surf->Base.Width < 0 || surf->Base.Height < 0) {
+      _eglError(EGL_BAD_PARAMETER, "eglCreatePbufferSurface");
+      free(surf);
+      return EGL_NO_SURFACE;
+   }
+
+   bind_texture = (surf->Base.TextureFormat != EGL_NO_TEXTURE);
+   width = (uint) surf->Base.Width;
+   height = (uint) surf->Base.Height;
+   if ((surf->Base.TextureTarget == EGL_NO_TEXTURE && bind_texture) ||
+       (surf->Base.TextureTarget != EGL_NO_TEXTURE && !bind_texture)) {
+      _eglError(EGL_BAD_MATCH, "eglCreatePbufferSurface");
+      free(surf);
+      return EGL_NO_SURFACE;
+   }
+   /* a framebuffer of zero width or height confuses st */
+   if (width == 0 || height == 0) {
+      _eglError(EGL_BAD_MATCH, "eglCreatePbufferSurface");
+      free(surf);
+      return EGL_NO_SURFACE;
+   }
+   /* no mipmap generation */
+   if (surf->Base.MipmapTexture) {
+      _eglError(EGL_BAD_MATCH, "eglCreatePbufferSurface");
+      free(surf);
+      return EGL_NO_SURFACE;
+   }
+
+   surf->winsys = xdrv->winsys;
+
+   _eglConfigToContextModesRec(conf, &visual);
+
+   /* Create GL statetracker framebuffer */
+   surf->Framebuffer = st_create_framebuffer(&visual,
+                                             choose_color_format(&visual),
+                                             choose_depth_format(&visual),
+                                             choose_stencil_format(&visual),
+                                             width, height,
+                                             (void *) surf);
+   st_resize_framebuffer(surf->Framebuffer, width, height);
+
+   return _eglLinkSurface(&surf->Base, disp);
+}
+
+
 static EGLBoolean
 xlib_eglDestroySurface(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface)
 {
    struct xlib_egl_surface *surf = lookup_surface(surface);
    if (surf) {
       _eglUnlinkSurface(&surf->Base);
-      if (!surf->Base.IsBound) {
-         XFreeGC(surf->Dpy, surf->Gc);
+      if (!_eglIsSurfaceBound(&surf->Base)) {
+         if (surf->Base.Type != EGL_PBUFFER_BIT)
+            XFreeGC(surf->Dpy, surf->Gc);
          st_unreference_framebuffer(surf->Framebuffer);
          free(surf);
       }
@@ -548,6 +642,86 @@ xlib_eglDestroySurface(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface)
 
 
 static EGLBoolean
+xlib_eglBindTexImage(_EGLDriver *drv, EGLDisplay dpy,
+                     EGLSurface surface, EGLint buffer)
+{
+   struct xlib_egl_surface *xsurf = lookup_surface(surface);
+   struct xlib_egl_context *xctx;
+   struct pipe_surface *psurf;
+   enum pipe_format format;
+   int target;
+
+   if (!xsurf || xsurf->Base.Type != EGL_PBUFFER_BIT)
+      return _eglError(EGL_BAD_SURFACE, "eglBindTexImage");
+   if (buffer != EGL_BACK_BUFFER)
+      return _eglError(EGL_BAD_PARAMETER, "eglBindTexImage");
+   if (xsurf->Base.BoundToTexture)
+      return _eglError(EGL_BAD_ACCESS, "eglBindTexImage");
+
+   /* this should be updated when choose_color_format is */
+   switch (xsurf->Base.TextureFormat) {
+   case EGL_TEXTURE_RGB:
+      format = PIPE_FORMAT_R8G8B8_UNORM;
+      break;
+   case EGL_TEXTURE_RGBA:
+      format = PIPE_FORMAT_A8R8G8B8_UNORM;
+      break;
+   default:
+      return _eglError(EGL_BAD_MATCH, "eglBindTexImage");
+   }
+
+   switch (xsurf->Base.TextureTarget) {
+   case EGL_TEXTURE_2D:
+      target = ST_TEXTURE_2D;
+      break;
+   default:
+      return _eglError(EGL_BAD_MATCH, "eglBindTexImage");
+   }
+
+   /* flush properly */
+   if (eglGetCurrentSurface(EGL_DRAW) == surface) {
+      xctx = lookup_context(eglGetCurrentContext());
+      st_flush(xctx->Context, PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME,
+               NULL);
+   }
+   else if (_eglIsSurfaceBound(&xsurf->Base)) {
+      xctx = lookup_context(_eglGetContextHandle(xsurf->Base.Binding));
+      if (xctx)
+         st_finish(xctx->Context);
+   }
+
+   st_get_framebuffer_surface(xsurf->Framebuffer, ST_SURFACE_BACK_LEFT,
+                              &psurf);
+   st_bind_texture_surface(psurf, target, xsurf->Base.MipmapLevel, format);
+   xsurf->Base.BoundToTexture = EGL_TRUE;
+
+   return EGL_TRUE;
+}
+
+
+static EGLBoolean
+xlib_eglReleaseTexImage(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface,
+                        EGLint buffer)
+{
+   struct xlib_egl_surface *xsurf = lookup_surface(surface);
+   struct pipe_surface *psurf;
+
+   if (!xsurf || xsurf->Base.Type != EGL_PBUFFER_BIT ||
+       !xsurf->Base.BoundToTexture)
+      return _eglError(EGL_BAD_SURFACE, "eglReleaseTexImage");
+   if (buffer != EGL_BACK_BUFFER)
+      return _eglError(EGL_BAD_PARAMETER, "eglReleaseTexImage");
+
+   st_get_framebuffer_surface(xsurf->Framebuffer, ST_SURFACE_BACK_LEFT,
+                              &psurf);
+   st_unbind_texture_surface(psurf, ST_TEXTURE_2D, xsurf->Base.MipmapLevel);
+   xsurf->Base.BoundToTexture = EGL_FALSE;
+
+   return EGL_TRUE;
+}
+
+
+static EGLBoolean
 xlib_eglSwapBuffers(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw)
 {
    /* error checking step: */
@@ -631,7 +805,10 @@ _eglMain(_EGLDisplay *dpy, const char *args)
    xdrv->Base.API.CreateContext = xlib_eglCreateContext;
    xdrv->Base.API.DestroyContext = xlib_eglDestroyContext;
    xdrv->Base.API.CreateWindowSurface = xlib_eglCreateWindowSurface;
+   xdrv->Base.API.CreatePbufferSurface = xlib_eglCreatePbufferSurface;
    xdrv->Base.API.DestroySurface = xlib_eglDestroySurface;
+   xdrv->Base.API.BindTexImage = xlib_eglBindTexImage;
+   xdrv->Base.API.ReleaseTexImage = xlib_eglReleaseTexImage;
    xdrv->Base.API.MakeCurrent = xlib_eglMakeCurrent;
    xdrv->Base.API.SwapBuffers = xlib_eglSwapBuffers;