mesa_interface: Move out of GL/internal/

Move it into src/gallium/include/ to make it absolutely clear this is a Mesa detail.
While we're at it, clean up its include sites, including some places
where we can just include kopper_interface.h instead since it includes
mesa_interface.h as its first act.

Acked-by: Daniel Stone <daniels@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28378>

src/loader/loader.c

@@ -45,7 +45,7 @@
 #include <sys/sysmacros.h>
 #endif
 #include <GL/gl.h>
-#include <GL/internal/mesa_interface.h>
+#include "mesa_interface.h"
 #include "loader.h"
 #include "util/libdrm.h"
 #include "util/os_file.h"

src/loader/loader.h

@@ -30,7 +30,7 @@
 #include <stdbool.h>
 #include <sys/stat.h>
 #include <stddef.h>
-#include "GL/internal/mesa_interface.h"
+#include "mesa_interface.h"
 
 #ifdef __cplusplus
 extern "C" {

src/loader/loader_dri3_helper.h

@@ -32,7 +32,7 @@
 #include <xcb/present.h>
 
 #include <GL/gl.h>
-#include <GL/internal/mesa_interface.h>
+#include "mesa_interface.h"
 #include <c11/threads.h>
 
 enum loader_dri3_buffer_type {

src/loader/loader_dri_helper.c

@@ -24,7 +24,7 @@
 #include <sys/types.h>
 
 #include <GL/gl.h> /* mesa_interface needs GL types */
-#include <GL/internal/mesa_interface.h>
+#include "mesa_interface.h"
 
 #include "drm-uapi/drm_fourcc.h"
 #include "loader_dri_helper.h"

src/loader/loader_dri_helper.h

@@ -25,7 +25,7 @@
 #include <sys/types.h>
 
 #include <GL/gl.h> /* mesa_interface needs GL types */
-#include <GL/internal/mesa_interface.h>
+#include "mesa_interface.h"
 #include <c11/threads.h>
 #include "util/format/u_formats.h"
 

src/loader/meson.build

@@ -8,7 +8,7 @@ if with_platform_x11 and with_dri3
     'loader_dri3_helper',
     'loader_dri3_helper.c',
     gnu_symbol_visibility : 'hidden',
-    include_directories : [inc_include, inc_src],
+    include_directories : [inc_include, inc_src, inc_gallium],
     dependencies : [
       idep_mesautil,
       dep_libdrm, dep_xcb_dri3, dep_xcb_present, dep_xcb_sync, dep_xshmfence,
@@ -25,7 +25,7 @@ if with_platform_wayland
     'loader_wayland_helper',
     'loader_wayland_helper.c',
     gnu_symbol_visibility : 'hidden',
-    include_directories : [inc_include, inc_src],
+    include_directories : [inc_include, inc_src, inc_gallium],
     dependencies : [
       dep_wayland_client,
     ],
@@ -44,7 +44,7 @@ libloader = static_library(
   ['loader_dri_helper.c', 'loader.c', sha1_h],
   c_args : loader_c_args,
   gnu_symbol_visibility : 'hidden',
-  include_directories : [inc_include, inc_src, inc_util],
+  include_directories : [inc_include, inc_src, inc_util, inc_gallium],
   dependencies : [dep_libdrm, dep_thread, dep_xcb, dep_xcb_xrandr],
   build_by_default : false,
 )