client API: minor bump + change entry for DRM related opengl-cb changes

Commit cfcee4cfe7 forgot those.

DOCS/client-api-changes.rst

@@ -32,6 +32,9 @@ API changes
 
 ::
 
+ 1.26   - remove glMPGetNativeDisplay("drm") support
+        - add mpv_opengl_cb_window_pos and mpv_opengl_cb_drm_params and
+          support via glMPGetNativeDisplay() for using it
  --- mpv 0.27.0 ---
  1.25   - remove setting "no-" options via mpv_set_option*(). (See corresponding
           deprecation in 0.23.0.)

libmpv/client.h

@@ -205,7 +205,7 @@ extern "C" {
  * relational operators (<, >, <=, >=).
  */
 #define MPV_MAKE_VERSION(major, minor) (((major) << 16) | (minor) | 0UL)
-#define MPV_CLIENT_API_VERSION MPV_MAKE_VERSION(1, 25)
+#define MPV_CLIENT_API_VERSION MPV_MAKE_VERSION(1, 26)
 
 /**
  * The API user is allowed to "#define MPV_ENABLE_DEPRECATED 0" before

libmpv/opengl_cb.h

@@ -160,6 +160,9 @@ extern "C" {
  * mpv_opengl_cb_window_pos struct pointer defined below.
  * Note : The intended use is for hardware overlays that might require
  * upscaling features (typically upscaling GL windows with drm to screen size).
+ *
+ * This is never used for GL rendering - only to map hardware overlays to
+ * GL rendering (for backends which support it).
  */
 struct mpv_opengl_cb_window_pos {
     int x;      // left coordinates of window (usually 0)