vo_direct3d: deprecate direct3d_shaders alias

And remove the difference between the aliases. This is needed to make
the sub-option changes less painful.

DOCS/interface-changes.rst

@@ -50,6 +50,8 @@ Interface changes
     - remove the vo-cmdline command. You can set OpenGL renderer options
       directly via properties instead.
     - deprecate the ao and vo auto-profiles (they never made any sense)
+    - deprecate "--vo=direct3d_shaders" - use "--vo=direct3d" instead.
+      Change "--vo=direct3d" to always use shaders by default.
  --- mpv 0.20.0 ---
     - add --image-display-duration option - this also means that image duration
       is not influenced by --mf-fps anymore in the general case (this is an

DOCS/man/vo.rst

@@ -199,11 +199,18 @@ Available video output drivers are:
     driver implementation may also have limits on the length of maximum
     queuing time or number of queued surfaces that work well or at all.
 
-``direct3d_shaders`` (Windows only)
+``direct3d`` (Windows only)
     Video output driver that uses the Direct3D interface.
 
     .. note:: This driver is for compatibility with systems that don't provide
-              proper OpenGL drivers.
+              proper OpenGL drivers, and where ANGLE does not perform well.
+
+    .. note:: Before to 0.21.0, ``direct3d_shaders`` and ``direct3d`` were
+              different, with ``direct3d`` not using shader by default. Now
+              both use shaders by default, and ``direct3d_shaders`` is a
+              deprecated alias. Use the ``prefer-stretchrect`` or the
+              ``disable-shaders`` sub-options to get the old behavior of
+              ``direct3d``.
 
     ``prefer-stretchrect``
         Use ``IDirect3DDevice9::StretchRect`` over other methods if possible.
@@ -268,12 +275,6 @@ Available video output drivers are:
     ``exact-backbuffer``
         Always resize the backbuffer to window size.
 
-``direct3d`` (Windows only)
-    Same as ``direct3d_shaders``, but with the options ``disable-textures``
-    and ``disable-shaders`` forced.
-
-    .. note:: This driver is for compatibility with old systems.
-
 ``opengl``
     OpenGL video output driver. It supports extended scaling methods, dithering
     and color management.

video/out/vo.c

@@ -55,7 +55,6 @@ extern const struct vo_driver video_out_lavc;
 extern const struct vo_driver video_out_caca;
 extern const struct vo_driver video_out_drm;
 extern const struct vo_driver video_out_direct3d;
-extern const struct vo_driver video_out_direct3d_shaders;
 extern const struct vo_driver video_out_sdl;
 extern const struct vo_driver video_out_vaapi;
 extern const struct vo_driver video_out_wayland;
@@ -73,7 +72,6 @@ const struct vo_driver *const video_out_drivers[] =
     &video_out_vdpau,
 #endif
 #if HAVE_DIRECT3D
-    &video_out_direct3d_shaders,
     &video_out_direct3d,
 #endif
 #if HAVE_WAYLAND
@@ -186,7 +184,8 @@ const struct m_obj_list vo_obj_list = {
     .get_desc = get_desc,
     .description = "video outputs",
     .aliases = {
-        {"gl",        "opengl"},
+        {"gl", "opengl"},
+        {"direct3d_shaders", "direct3d"},
         {0}
     },
     .allow_unknown_entries = true,

video/out/vo_direct3d.c

@@ -1732,12 +1732,6 @@ static const struct m_option opts[] = {
     {0}
 };
 
-static const d3d_priv defaults_noshaders = {
-    .video_eq = { MP_CSP_EQ_CAPS_COLORMATRIX },
-    .opt_disable_shaders = 1,
-    .opt_disable_textures = 1,
-};
-
 static const d3d_priv defaults = {
     .video_eq = { MP_CSP_EQ_CAPS_COLORMATRIX },
 };
@@ -1753,21 +1747,6 @@ const struct vo_driver video_out_direct3d = {
     .flip_page = flip_page,
     .uninit = uninit,
     .priv_size = sizeof(d3d_priv),
-    .priv_defaults = &defaults_noshaders,
-    .options = opts,
-};
-
-const struct vo_driver video_out_direct3d_shaders = {
-    .description = "Direct3D 9 Renderer (using shaders for YUV conversion)",
-    .name = "direct3d_shaders",
-    .preinit = preinit,
-    .query_format = query_format,
-    .reconfig = reconfig,
-    .control = control,
-    .draw_image = draw_image,
-    .flip_page = flip_page,
-    .uninit = uninit,
-    .priv_size = sizeof(d3d_priv),
     .priv_defaults = &defaults,
     .options = opts,
 };