Convert headers to #pragma once

The conversion was done by guard2one.

66 files changed, 66 insertions, 198 deletions

diff --git a/gsk/broadway/gskbroadwayrenderer.h b/gsk/broadway/gskbroadwayrenderer.h
index 9e8d3dbe0b..ac16f326ea 100644
--- a/gsk/broadway/gskbroadwayrenderer.h
+++ b/gsk/broadway/gskbroadwayrenderer.h
@@ -15,8 +15,7 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GSK_BROADWAY_RENDERER_H__
-#define __GSK_BROADWAY_RENDERER_H__
+#pragma once
 
 #include <gdk/gdk.h>
 #include <gsk/gskrenderer.h>
@@ -49,4 +48,3 @@ G_END_DECLS
 
 #endif /* GDK_WINDOWING_BROADWAY */
 
-#endif /* __GSK_BROADWAY_RENDERER_H__ */
diff --git a/gsk/gl/fp16private.h b/gsk/gl/fp16private.h
index fbb95cdc1b..faeeaa2d81 100644
--- a/gsk/gl/fp16private.h
+++ b/gsk/gl/fp16private.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __FP16_PRIVATE_H__
-#define __FP16_PRIVATE_H__
+#pragma once
 
 #include <glib.h>
 
@@ -73,4 +72,3 @@ void half_to_float_c (const guint16 *h,
 
 G_END_DECLS
 
-#endif
diff --git a/gsk/gl/gskglattachmentstateprivate.h b/gsk/gl/gskglattachmentstateprivate.h
index e2fdb621c6..67141b0452 100644
--- a/gsk/gl/gskglattachmentstateprivate.h
+++ b/gsk/gl/gskglattachmentstateprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_ATTACHMENT_STATE_PRIVATE_H__
-#define __GSK_GL_ATTACHMENT_STATE_PRIVATE_H__
+#pragma once
 
 #include "gskgltypesprivate.h"
 
@@ -96,4 +95,3 @@ void                  gsk_gl_attachment_state_bind_framebuffer (GskGLAttachmentS
 
 G_END_DECLS
 
-#endif /* __GSK_GL_ATTACHMENT_STATE_PRIVATE_H__ */
diff --git a/gsk/gl/gskglbufferprivate.h b/gsk/gl/gskglbufferprivate.h
index 3f783898f0..fa4e65cc37 100644
--- a/gsk/gl/gskglbufferprivate.h
+++ b/gsk/gl/gskglbufferprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_BUFFER_PRIVATE_H__
-#define __GSK_GL_BUFFER_PRIVATE_H__
+#pragma once
 
 #include "gskgltypesprivate.h"
 
@@ -79,4 +78,3 @@ gsk_gl_buffer_get_offset (GskGLBuffer *buffer)
 
 G_END_DECLS
 
-#endif /* __GSK_GL_BUFFER_PRIVATE_H__ */
diff --git a/gsk/gl/gskglcommandqueueprivate.h b/gsk/gl/gskglcommandqueueprivate.h
index cab15afbaa..c946eb9803 100644
--- a/gsk/gl/gskglcommandqueueprivate.h
+++ b/gsk/gl/gskglcommandqueueprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_COMMAND_QUEUE_PRIVATE_H__
-#define __GSK_GL_COMMAND_QUEUE_PRIVATE_H__
+#pragma once
 
 #include <gsk/gskprofilerprivate.h>
 
@@ -374,4 +373,3 @@ gsk_gl_command_queue_bind_framebuffer (GskGLCommandQueue *self,
 
 G_END_DECLS
 
-#endif /* __GSK_GL_COMMAND_QUEUE_PRIVATE_H__ */
diff --git a/gsk/gl/gskglcompilerprivate.h b/gsk/gl/gskglcompilerprivate.h
index 54f3e00836..82a2dda81a 100644
--- a/gsk/gl/gskglcompilerprivate.h
+++ b/gsk/gl/gskglcompilerprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_COMPILER_PRIVATE_H__
-#define __GSK_GL_COMPILER_PRIVATE_H__
+#pragma once
 
 #include "gskgltypesprivate.h"
 
@@ -67,4 +66,3 @@ GskGLProgram  * gsk_gl_compiler_compile                    (GskGLCompiler      *
 
 G_END_DECLS
 
-#endif /* __GSK_GL_COMPILER_PRIVATE_H__ */
diff --git a/gsk/gl/gskgldriverprivate.h b/gsk/gl/gskgldriverprivate.h
index 2945aaa4e7..15340b0a1b 100644
--- a/gsk/gl/gskgldriverprivate.h
+++ b/gsk/gl/gskgldriverprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_DRIVER_PRIVATE_H__
-#define __GSK_GL_DRIVER_PRIVATE_H__
+#pragma once
 
 #include <gdk/gdkgltextureprivate.h>
 
@@ -242,4 +241,3 @@ gsk_gl_driver_slice_texture (GskGLDriver        *self,
 
 G_END_DECLS
 
-#endif /* __GSK_GL_DRIVER_PRIVATE_H__ */
diff --git a/gsk/gl/gskglglyphlibraryprivate.h b/gsk/gl/gskglglyphlibraryprivate.h
index 42692f34e6..b3022b4630 100644
--- a/gsk/gl/gskglglyphlibraryprivate.h
+++ b/gsk/gl/gskglglyphlibraryprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_GLYPH_LIBRARY_PRIVATE_H__
-#define __GSK_GL_GLYPH_LIBRARY_PRIVATE_H__
+#pragma once
 
 #include <pango/pango.h>
 
@@ -102,4 +101,3 @@ gsk_gl_glyph_library_lookup_or_add (GskGLGlyphLibrary      *self,
 
 G_END_DECLS
 
-#endif /* __GSK_GL_GLYPH_LIBRARY_PRIVATE_H__ */
diff --git a/gsk/gl/gskgliconlibraryprivate.h b/gsk/gl/gskgliconlibraryprivate.h
index 8c34aec2f1..dc99b546ce 100644
--- a/gsk/gl/gskgliconlibraryprivate.h
+++ b/gsk/gl/gskgliconlibraryprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_ICON_LIBRARY_PRIVATE_H__
-#define __GSK_GL_ICON_LIBRARY_PRIVATE_H__
+#pragma once
 
 #include <pango/pango.h>
 
@@ -57,4 +56,3 @@ gsk_gl_icon_library_lookup_or_add (GskGLIconLibrary     *self,
 
 G_END_DECLS
 
-#endif /* __GSK_GL_ICON_LIBRARY_PRIVATE_H__ */
diff --git a/gsk/gl/gskglprofilerprivate.h b/gsk/gl/gskglprofilerprivate.h
index 5b2a24b09f..3aa0650c11 100644
--- a/gsk/gl/gskglprofilerprivate.h
+++ b/gsk/gl/gskglprofilerprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_GL_PROFILER_PRIVATE_H__
-#define __GSK_GL_PROFILER_PRIVATE_H__
+#pragma once
 
 #include <gsk/gsktypes.h>
 
@@ -15,4 +14,3 @@ guint64         gsk_gl_profiler_end_gpu_region          (GskGLProfiler *profiler
 
 G_END_DECLS
 
-#endif /* __GSK_GL_PROFILER_PRIVATE_H__ */
diff --git a/gsk/gl/gskglprogramprivate.h b/gsk/gl/gskglprogramprivate.h
index 4947fb1a32..50c191eb4b 100644
--- a/gsk/gl/gskglprogramprivate.h
+++ b/gsk/gl/gskglprogramprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_PROGRAM_PRIVATE_H__
-#define __GSK_GL_PROGRAM_PRIVATE_H__
+#pragma once
 
 #include "gskgltypesprivate.h"
 
@@ -301,4 +300,3 @@ gsk_gl_program_set_uniform_matrix (GskGLProgram            *self,
 
 G_END_DECLS
 
-#endif /* __GSK_GL_PROGRAM_PRIVATE_H__ */
diff --git a/gsk/gl/gskglrenderer.h b/gsk/gl/gskglrenderer.h
index 818848479f..feb793ef29 100644
--- a/gsk/gl/gskglrenderer.h
+++ b/gsk/gl/gskglrenderer.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_RENDERER_H__
-#define __GSK_GL_RENDERER_H__
+#pragma once
 
 #include <gsk/gskrenderer.h>
 
@@ -47,4 +46,3 @@ GDK_DEPRECATED_IN_4_4_FOR (gsk_gl_renderer_new)
 GskRenderer *gsk_ngl_renderer_new      (void);
 G_END_DECLS
 
-#endif /* __GSK_GL_RENDERER__ */
diff --git a/gsk/gl/gskglrendererprivate.h b/gsk/gl/gskglrendererprivate.h
index df23e0705f..59a7222e71 100644
--- a/gsk/gl/gskglrendererprivate.h
+++ b/gsk/gl/gskglrendererprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_RENDERER_PRIVATE_H__
-#define __GSK_GL_RENDERER_PRIVATE_H__
+#pragma once
 
 #include "gskglrenderer.h"
 
@@ -31,4 +30,3 @@ gboolean gsk_gl_renderer_try_compile_gl_shader (GskGLRenderer  *renderer,
 
 G_END_DECLS
 
-#endif /* __GSK_GL_RENDERER_PRIVATE_H__ */
diff --git a/gsk/gl/gskglrenderjobprivate.h b/gsk/gl/gskglrenderjobprivate.h
index 3b92215d3a..c340bf1490 100644
--- a/gsk/gl/gskglrenderjobprivate.h
+++ b/gsk/gl/gskglrenderjobprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_RENDER_JOB_H__
-#define __GSK_GL_RENDER_JOB_H__
+#pragma once
 
 #include "gskgltypesprivate.h"
 
@@ -37,4 +36,3 @@ void            gsk_gl_render_job_render_flipped     (GskGLRenderJob        *job
 void            gsk_gl_render_job_set_debug_fallback (GskGLRenderJob        *job,
                                                       gboolean               debug_fallback);
 
-#endif /* __GSK_GL_RENDER_JOB_H__ */
diff --git a/gsk/gl/gskglshadowlibraryprivate.h b/gsk/gl/gskglshadowlibraryprivate.h
index a328674731..3c3c77c9e3 100644
--- a/gsk/gl/gskglshadowlibraryprivate.h
+++ b/gsk/gl/gskglshadowlibraryprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_SHADOW_LIBRARY_PRIVATE_H__
-#define __GSK_GL_SHADOW_LIBRARY_PRIVATE_H__
+#pragma once
 
 #include "gskgltexturelibraryprivate.h"
 
@@ -41,4 +40,3 @@ void                 gsk_gl_shadow_library_insert      (GskGLShadowLibrary   *se
 
 G_END_DECLS
 
-#endif /* __GSK_GL_SHADOW_LIBRARY_PRIVATE_H__ */
diff --git a/gsk/gl/gskgltexturelibraryprivate.h b/gsk/gl/gskgltexturelibraryprivate.h
index a0292c497b..e2c3589fab 100644
--- a/gsk/gl/gskgltexturelibraryprivate.h
+++ b/gsk/gl/gskgltexturelibraryprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_TEXTURE_LIBRARY_PRIVATE_H__
-#define __GSK_GL_TEXTURE_LIBRARY_PRIVATE_H__
+#pragma once
 
 #include "gskgltypesprivate.h"
 #include "gskgltextureprivate.h"
@@ -231,4 +230,3 @@ gsk_gl_texture_library_can_cache (GskGLTextureLibrary *self,
 
 G_END_DECLS
 
-#endif /* __GSK_GL_TEXTURE_LIBRARY_PRIVATE_H__ */
diff --git a/gsk/gl/gskgltextureprivate.h b/gsk/gl/gskgltextureprivate.h
index 4d25767ef4..b6cf5e42bb 100644
--- a/gsk/gl/gskgltextureprivate.h
+++ b/gsk/gl/gskgltextureprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef _GSK_GL_TEXTURE_PRIVATE_H__
-#define _GSK_GL_TEXTURE_PRIVATE_H__
+#pragma once
 
 #include "gskgltypesprivate.h"
 
@@ -90,4 +89,3 @@ void                          gsk_gl_texture_free           (GskGLTexture
 
 G_END_DECLS
 
-#endif /* _GSK_GL_TEXTURE_PRIVATE_H__ */
diff --git a/gsk/gl/gskgltypesprivate.h b/gsk/gl/gskgltypesprivate.h
index 1250756fb7..c16c22c5a0 100644
--- a/gsk/gl/gskgltypesprivate.h
+++ b/gsk/gl/gskgltypesprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __GSK_GL_TYPES_PRIVATE_H__
-#define __GSK_GL_TYPES_PRIVATE_H__
+#pragma once
 
 #include <epoxy/gl.h>
 #include <graphene.h>
@@ -63,4 +62,3 @@ struct _GskGLDrawVertex
 
 G_END_DECLS
 
-#endif /* __GSK_GL_TYPES_PRIVATE_H__ */
diff --git a/gsk/gl/gskgluniformstateprivate.h b/gsk/gl/gskgluniformstateprivate.h
index af5c82ab07..3704be957c 100644
--- a/gsk/gl/gskgluniformstateprivate.h
+++ b/gsk/gl/gskgluniformstateprivate.h
@@ -18,8 +18,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef GSK_GL_UNIFORM_STATE_PRIVATE_H
-#define GSK_GL_UNIFORM_STATE_PRIVATE_H
+#pragma once
 
 #include "gskgltypesprivate.h"
 
@@ -833,4 +832,3 @@ gsk_gl_uniform_state_apply (GskGLUniformState *state,
 
 G_END_DECLS
 
-#endif /* GSK_GL_UNIFORM_STATE_PRIVATE_H */
diff --git a/gsk/gl/inlinearray.h b/gsk/gl/inlinearray.h
index 98a9255c68..204513d23c 100644
--- a/gsk/gl/inlinearray.h
+++ b/gsk/gl/inlinearray.h
@@ -1,5 +1,4 @@
-#ifndef __INLINE_ARRAY_H__
-#define __INLINE_ARRAY_H__
+#pragma once
 
 #define DEFINE_INLINE_ARRAY(Type, prefix, ElementType)              \
   typedef struct _##Type {                                          \
@@ -74,4 +73,3 @@
     return element - &ar->items[0];                                 \
   }
 
-#endif /* __INLINE_ARRAY_H__ */
diff --git a/gsk/gl/ninesliceprivate.h b/gsk/gl/ninesliceprivate.h
index 1ad905929d..7191ec5f13 100644
--- a/gsk/gl/ninesliceprivate.h
+++ b/gsk/gl/ninesliceprivate.h
@@ -19,8 +19,7 @@
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 
-#ifndef __NINE_SLICE_PRIVATE_H__
-#define __NINE_SLICE_PRIVATE_H__
+#pragma once
 
 #include "gskgltextureprivate.h"
 
@@ -307,4 +306,3 @@ nine_slice_grow (GskGLTextureNineSlice *slices,
 
 G_END_DECLS
 
-#endif /* __NINE_SLICE_PRIVATE_H__ */
diff --git a/gsk/gl/stb_rect_pack.h b/gsk/gl/stb_rect_pack.h
index 3ecb1c2fa2..07d0fb79a5 100644
--- a/gsk/gl/stb_rect_pack.h
+++ b/gsk/gl/stb_rect_pack.h
@@ -54,8 +54,7 @@
 //       INCLUDE SECTION
 //
 
-#ifndef STB_INCLUDE_STB_RECT_PACK_H
-#define STB_INCLUDE_STB_RECT_PACK_H
+#pragma once
 
 #define STB_RECT_PACK_VERSION  1
 
@@ -187,5 +186,4 @@ struct stbrp_context
 }
 #endif
 
-#endif
 
diff --git a/gsk/gsk.h b/gsk/gsk.h
index 25fe1b7bf6..fc5f3962f9 100644
--- a/gsk/gsk.h
+++ b/gsk/gsk.h
@@ -15,8 +15,7 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GSK_H__
-#define __GSK_H__
+#pragma once
 
 #define __GSK_H_INSIDE__
 
@@ -34,4 +33,3 @@
 
 #undef __GSK_H_INSIDE__
 
-#endif /* __GSK_H__ */
diff --git a/gsk/gskcairoblurprivate.h b/gsk/gskcairoblurprivate.h
index 81d724e897..61ddc0750d 100644
--- a/gsk/gskcairoblurprivate.h
+++ b/gsk/gskcairoblurprivate.h
@@ -21,8 +21,7 @@
  *
  */
 
-#ifndef _GSK_CAIRO_BLUR_H
-#define _GSK_CAIRO_BLUR_H
+#pragma once
 
 #include <gdk/gdk.h>
 #include <cairo.h>
@@ -51,4 +50,3 @@ cairo_t *       gsk_cairo_blur_finish_drawing   (cairo_t         *cr,
 
 G_END_DECLS
 
-#endif /* _GSK_CAIRO_BLUR_H */
diff --git a/gsk/gskcairorenderer.h b/gsk/gskcairorenderer.h
index 249b5a7b96..df0b4a4e6e 100644
--- a/gsk/gskcairorenderer.h
+++ b/gsk/gskcairorenderer.h
@@ -18,8 +18,7 @@
  * Authors: Benjamin Otte <otte@gnome.org>
  */
 
-#ifndef __GSK_CAIRO_RENDERER_H__
-#define __GSK_CAIRO_RENDERER_H__
+#pragma once
 
 #include <cairo.h>
 #include <gsk/gskrenderer.h>
@@ -53,4 +52,3 @@ GskRenderer *           gsk_cairo_renderer_new                  (void);
 
 G_END_DECLS
 
-#endif /* __GSK_CAIRO_RENDERER_H__ */
diff --git a/gsk/gskdebugprivate.h b/gsk/gskdebugprivate.h
index 36ea6de72e..bb23101b34 100644
--- a/gsk/gskdebugprivate.h
+++ b/gsk/gskdebugprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_DEBUG_PRIVATE_H__
-#define __GSK_DEBUG_PRIVATE_H__
+#pragma once
 
 #include <glib.h>
 #include "gdk/gdkdebugprivate.h"
@@ -59,4 +58,3 @@ gboolean gsk_check_debug_flags (GskDebugFlags flags);
 
 G_END_DECLS
 
-#endif /* __GSK_DEBUG_PRIVATE_H__ */
diff --git a/gsk/gskdiffprivate.h b/gsk/gskdiffprivate.h
index 6c1c67664a..144afaf833 100644
--- a/gsk/gskdiffprivate.h
+++ b/gsk/gskdiffprivate.h
@@ -17,8 +17,7 @@
  * Authors: Benjamin Otte <otte@gnome.org>
  */
 
-#ifndef __GSK_DIFF_PRIVATE_H__
-#define __GSK_DIFF_PRIVATE_H__
+#pragma once
 
 #include <glib.h>
 
@@ -52,4 +51,3 @@ GskDiffResult           gsk_diff                                (gconstpointer
 
 G_END_DECLS
 
-#endif /* __GSK_DIFF_PRIVATE_H__ */
diff --git a/gsk/gskenums.h b/gsk/gskenums.h
index 92e6aa456a..5b0ac88193 100644
--- a/gsk/gskenums.h
+++ b/gsk/gskenums.h
@@ -15,8 +15,7 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GSK_ENUMS_H__
-#define __GSK_ENUMS_H__
+#pragma once
 
 #if !defined (__GSK_H_INSIDE__) && !defined (GTK_COMPILATION)
 #error "Only <gsk/gsk.h> can be included directly."
@@ -276,4 +275,3 @@ typedef enum
   GSK_MASK_MODE_INVERTED_LUMINANCE
 } GskMaskMode;
 
-#endif /* __GSK_TYPES_H__ */
diff --git a/gsk/gskglshader.h b/gsk/gskglshader.h
index bbf2f83f55..0e2fc5c165 100644
--- a/gsk/gskglshader.h
+++ b/gsk/gskglshader.h
@@ -16,8 +16,7 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GSK_GL_SHADER_H__
-#define __GSK_GL_SHADER_H__
+#pragma once
 
 #if !defined (__GSK_H_INSIDE__) && !defined (GTK_COMPILATION)
 #error "Only <gsk/gsk.h> can be included directly."
@@ -164,4 +163,3 @@ void    gsk_shader_args_builder_set_vec4  (GskShaderArgsBuilder *builder,
 
 G_END_DECLS
 
-#endif /* __GSK_GL_SHADER_H__ */
diff --git a/gsk/gskglshaderprivate.h b/gsk/gskglshaderprivate.h
index 3dc82c35dc..b28a787866 100644
--- a/gsk/gskglshaderprivate.h
+++ b/gsk/gskglshaderprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_GLSHADER_PRIVATE_H__
-#define __GSK_GLSHADER_PRIVATE_H__
+#pragma once
 
 #include <gsk/gskglshader.h>
 
@@ -16,4 +15,3 @@ const GskGLUniform *gsk_gl_shader_get_uniforms (GskGLShader *shader,
 
 G_END_DECLS
 
-#endif /* __GSK_GLSHADER_PRIVATE_H__ */
diff --git a/gsk/gskprivate.h b/gsk/gskprivate.h
index a8b92b4b18..b9e32b00db 100644
--- a/gsk/gskprivate.h
+++ b/gsk/gskprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_PRIVATE_H__
-#define __GSK_PRIVATE_H__
+#pragma once
 
 #include <glib.h>
 #include <pango/pango.h>
@@ -13,4 +12,3 @@ typedef struct _GskVulkanRenderPass GskVulkanRenderPass;
 
 G_END_DECLS
 
-#endif /* __GSK_PRIVATE_H__ */
diff --git a/gsk/gskprofilerprivate.h b/gsk/gskprofilerprivate.h
index ff71d4c947..d0838d3311 100644
--- a/gsk/gskprofilerprivate.h
+++ b/gsk/gskprofilerprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_PROFILER_PRIVATE_H__
-#define __GSK_PROFILER_PRIVATE_H__
+#pragma once
 
 #include <glib-object.h>
 
@@ -53,4 +52,3 @@ void            gsk_profiler_append_timers      (GskProfiler *profiler,
 
 G_END_DECLS
 
-#endif /* __GSK_PROFILER_PRIVATE_H__ */
diff --git a/gsk/gskrenderer.h b/gsk/gskrenderer.h
index b14898d39d..af73141e2b 100644
--- a/gsk/gskrenderer.h
+++ b/gsk/gskrenderer.h
@@ -16,8 +16,7 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GSK_RENDERER_H__
-#define __GSK_RENDERER_H__
+#pragma once
 
 #if !defined (__GSK_H_INSIDE__) && !defined (GTK_COMPILATION)
 #error "Only <gsk/gsk.h> can be included directly."
@@ -67,4 +66,3 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(GskRenderer, g_object_unref)
 
 G_END_DECLS
 
-#endif /* __GSK_RENDERER_H__ */
diff --git a/gsk/gskrendererprivate.h b/gsk/gskrendererprivate.h
index fcee1849f2..1496a8658c 100644
--- a/gsk/gskrendererprivate.h
+++ b/gsk/gskrendererprivate.h
@@ -16,8 +16,7 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GSK_RENDERER_PRIVATE_H__
-#define __GSK_RENDERER_PRIVATE_H__
+#pragma once
 
 #include "gskrenderer.h"
 #include "gskprofilerprivate.h"
@@ -61,4 +60,3 @@ void                    gsk_renderer_set_debug_flags            (GskRenderer
 
 G_END_DECLS
 
-#endif /* __GSK_RENDERER_PRIVATE_H__ */
diff --git a/gsk/gskrendernode.h b/gsk/gskrendernode.h
index 36b7ae190c..b1ceec5cea 100644
--- a/gsk/gskrendernode.h
+++ b/gsk/gskrendernode.h
@@ -16,8 +16,7 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GSK_RENDER_NODE_H__
-#define __GSK_RENDER_NODE_H__
+#pragma once
 
 #if !defined (__GSK_H_INSIDE__) && !defined (GTK_COMPILATION)
 #error "Only <gsk/gsk.h> can be included directly."
@@ -585,4 +584,3 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(GskRenderNode, gsk_render_node_unref)
 
 G_END_DECLS
 
-#endif /* __GSK_RENDER_NODE_H__ */
diff --git a/gsk/gskrendernodeparserprivate.h b/gsk/gskrendernodeparserprivate.h
index 7994488772..e22ee9e970 100644
--- a/gsk/gskrendernodeparserprivate.h
+++ b/gsk/gskrendernodeparserprivate.h
@@ -1,6 +1,5 @@
 
-#ifndef __GSK_RENDER_NODE_PARSER_PRIVATE_H__
-#define __GSK_RENDER_NODE_PARSER_PRIVATE_H__
+#pragma once
 
 #include "gskrendernode.h"
 
@@ -8,4 +7,3 @@ GskRenderNode * gsk_render_node_deserialize_from_bytes  (GBytes            *byte
                                                          GskParseErrorFunc  error_func,
                                                          gpointer           user_data);
 
-#endif
diff --git a/gsk/gskrendernodeprivate.h b/gsk/gskrendernodeprivate.h
index 32acf04606..8ec971e94a 100644
--- a/gsk/gskrendernodeprivate.h
+++ b/gsk/gskrendernodeprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_RENDER_NODE_PRIVATE_H__
-#define __GSK_RENDER_NODE_PRIVATE_H__
+#pragma once
 
 #include "gskrendernode.h"
 #include <cairo.h>
@@ -121,4 +120,3 @@ gboolean       gsk_render_node_use_offscreen_for_opacity (const GskRenderNode *n
 
 G_END_DECLS
 
-#endif /* __GSK_RENDER_NODE_PRIVATE_H__ */
diff --git a/gsk/gskroundedrect.h b/gsk/gskroundedrect.h
index 3dbaf0552c..ecf6f182fc 100644
--- a/gsk/gskroundedrect.h
+++ b/gsk/gskroundedrect.h
@@ -16,8 +16,7 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GSK_ROUNDED_RECT_H__
-#define __GSK_ROUNDED_RECT_H__
+#pragma once
 
 #if !defined (__GSK_H_INSIDE__) && !defined (GTK_COMPILATION)
 #error "Only <gsk/gsk.h> can be included directly."
@@ -97,4 +96,3 @@ gboolean                gsk_rounded_rect_intersects_rect        (const GskRounde
 
 G_END_DECLS
 
-#endif /* __GSK_ROUNDED_RECT_H__ */
diff --git a/gsk/gskroundedrectprivate.h b/gsk/gskroundedrectprivate.h
index 8cd00d3995..5be1a4ab0c 100644
--- a/gsk/gskroundedrectprivate.h
+++ b/gsk/gskroundedrectprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_ROUNDED_RECT_PRIVATE_H__
-#define __GSK_ROUNDED_RECT_PRIVATE_H__
+#pragma once
 
 #include "gskroundedrect.h"
 
@@ -38,4 +37,3 @@ char *                   gsk_rounded_rect_to_string             (const GskRounde
 
 G_END_DECLS
 
-#endif /* __GSK_ROUNDED_RECT_PRIVATE_H__ */
diff --git a/gsk/gsktransform.h b/gsk/gsktransform.h
index 9579a684b7..54fba38c43 100644
--- a/gsk/gsktransform.h
+++ b/gsk/gsktransform.h
@@ -18,8 +18,7 @@
  */
 
 
-#ifndef __GSK_TRANSFORM_H__
-#define __GSK_TRANSFORM_H__
+#pragma once
 
 #if !defined (__GSK_H_INSIDE__) && !defined (GTK_COMPILATION)
 #error "Only <gsk/gsk.h> can be included directly."
@@ -138,4 +137,3 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(GskTransform, gsk_transform_unref)
 
 G_END_DECLS
 
-#endif /* __GSK_TRANSFORM_H__ */
diff --git a/gsk/gsktransformprivate.h b/gsk/gsktransformprivate.h
index a7871c35f4..3d0504d5e3 100644
--- a/gsk/gsktransformprivate.h
+++ b/gsk/gsktransformprivate.h
@@ -18,8 +18,7 @@
  */
 
 
-#ifndef __GSK_TRANSFORM_PRIVATE_H__
-#define __GSK_TRANSFORM_PRIVATE_H__
+#pragma once
 
 #include "gsktransform.h"
 
@@ -58,5 +57,4 @@ void gsk_matrix_transform_rect    (const graphene_matrix_t  *m,
 
 G_END_DECLS
 
-#endif /* __GSK_TRANSFORM_PRIVATE_H__ */
 
diff --git a/gsk/gsktypes.h b/gsk/gsktypes.h
index f514a53364..acc8bc841b 100644
--- a/gsk/gsktypes.h
+++ b/gsk/gsktypes.h
@@ -15,8 +15,7 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GSK_TYPES_H__
-#define __GSK_TYPES_H__
+#pragma once
 
 #if !defined (__GSK_H_INSIDE__) && !defined (GTK_COMPILATION)
 #error "Only <gsk/gsk.h> can be included directly."
@@ -29,4 +28,3 @@
 typedef struct _GskRenderer             GskRenderer;
 typedef struct _GskTransform            GskTransform;
 
-#endif /* __GSK_TYPES_H__ */
diff --git a/gsk/vulkan/gskvulkanblendmodepipelineprivate.h b/gsk/vulkan/gskvulkanblendmodepipelineprivate.h
index 67822e4f9b..6382ed73e5 100644
--- a/gsk/vulkan/gskvulkanblendmodepipelineprivate.h
+++ b/gsk/vulkan/gskvulkanblendmodepipelineprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_BLEND_MODE_PIPELINE_PRIVATE_H__
-#define __GSK_VULKAN_BLEND_MODE_PIPELINE_PRIVATE_H__
+#pragma once
 
 #include <graphene.h>
 
@@ -34,4 +33,3 @@ gsize               gsk_vulkan_blend_mode_pipeline_draw                (GskVulka
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_BLEND_MODE_PIPELINE_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanblurpipelineprivate.h b/gsk/vulkan/gskvulkanblurpipelineprivate.h
index 0fc2cb6705..74db815b08 100644
--- a/gsk/vulkan/gskvulkanblurpipelineprivate.h
+++ b/gsk/vulkan/gskvulkanblurpipelineprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_BLUR_PIPELINE_PRIVATE_H__
-#define __GSK_VULKAN_BLUR_PIPELINE_PRIVATE_H__
+#pragma once
 
 #include <graphene.h>
 
@@ -31,4 +30,3 @@ gsize                   gsk_vulkan_blur_pipeline_draw                  (GskVulka
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_BLUR_PIPELINE_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanborderpipelineprivate.h b/gsk/vulkan/gskvulkanborderpipelineprivate.h
index d82679259d..423860bfe2 100644
--- a/gsk/vulkan/gskvulkanborderpipelineprivate.h
+++ b/gsk/vulkan/gskvulkanborderpipelineprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_BORDER_PIPELINE_PRIVATE_H__
-#define __GSK_VULKAN_BORDER_PIPELINE_PRIVATE_H__
+#pragma once
 
 #include <graphene.h>
 
@@ -32,4 +31,3 @@ gsize                   gsk_vulkan_border_pipeline_draw                 (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_BORDER_PIPELINE_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanboxshadowpipelineprivate.h b/gsk/vulkan/gskvulkanboxshadowpipelineprivate.h
index 975338bcf1..c8a55c1204 100644
--- a/gsk/vulkan/gskvulkanboxshadowpipelineprivate.h
+++ b/gsk/vulkan/gskvulkanboxshadowpipelineprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_BOX_SHADOW_PIPELINE_PRIVATE_H__
-#define __GSK_VULKAN_BOX_SHADOW_PIPELINE_PRIVATE_H__
+#pragma once
 
 #include <graphene.h>
 
@@ -36,4 +35,3 @@ gsize                   gsk_vulkan_box_shadow_pipeline_draw             (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_BOX_SHADOW_PIPELINE_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanbufferprivate.h b/gsk/vulkan/gskvulkanbufferprivate.h
index 700e400528..bdccf597c4 100644
--- a/gsk/vulkan/gskvulkanbufferprivate.h
+++ b/gsk/vulkan/gskvulkanbufferprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_BUFFER_PRIVATE_H__
-#define __GSK_VULKAN_BUFFER_PRIVATE_H__
+#pragma once
 
 #include <gdk/gdk.h>
 
@@ -22,4 +21,3 @@ void                    gsk_vulkan_buffer_unmap                         (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_BUFFER_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanclipprivate.h b/gsk/vulkan/gskvulkanclipprivate.h
index ebae166c14..03282066af 100644
--- a/gsk/vulkan/gskvulkanclipprivate.h
+++ b/gsk/vulkan/gskvulkanclipprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_CLIP_PRIVATE_H__
-#define __GSK_VULKAN_CLIP_PRIVATE_H__
+#pragma once
 
 #include <gdk/gdk.h>
 #include <graphene.h>
@@ -54,4 +53,3 @@ gboolean                gsk_vulkan_clip_contains_rect                   (const G
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_CLIP_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkancolorpipelineprivate.h b/gsk/vulkan/gskvulkancolorpipelineprivate.h
index b9ae514d29..bf9280b26c 100644
--- a/gsk/vulkan/gskvulkancolorpipelineprivate.h
+++ b/gsk/vulkan/gskvulkancolorpipelineprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_COLOR_PIPELINE_PRIVATE_H__
-#define __GSK_VULKAN_COLOR_PIPELINE_PRIVATE_H__
+#pragma once
 
 #include <graphene.h>
 
@@ -30,4 +29,3 @@ gsize                   gsk_vulkan_color_pipeline_draw                  (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_COLOR_PIPELINE_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkancolortextpipelineprivate.h b/gsk/vulkan/gskvulkancolortextpipelineprivate.h
index a549c25fcd..382e2d4497 100644
--- a/gsk/vulkan/gskvulkancolortextpipelineprivate.h
+++ b/gsk/vulkan/gskvulkancolortextpipelineprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_COLOR_TEXT_PIPELINE_PRIVATE_H__
-#define __GSK_VULKAN_COLOR_TEXT_PIPELINE_PRIVATE_H__
+#pragma once
 
 #include <graphene.h>
 
@@ -39,4 +38,3 @@ gsize                   gsk_vulkan_color_text_pipeline_draw                  (Gs
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_COLOR_TEXT_PIPELINE_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkancommandpoolprivate.h b/gsk/vulkan/gskvulkancommandpoolprivate.h
index bb362f3fd9..46e02ca539 100644
--- a/gsk/vulkan/gskvulkancommandpoolprivate.h
+++ b/gsk/vulkan/gskvulkancommandpoolprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_COMMAND_POOL_PRIVATE_H__
-#define __GSK_VULKAN_COMMAND_POOL_PRIVATE_H__
+#pragma once
 
 #include <gdk/gdk.h>
 
@@ -23,4 +22,3 @@ void                    gsk_vulkan_command_pool_submit_buffer           (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_COMMAND_POOL_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkancrossfadepipelineprivate.h b/gsk/vulkan/gskvulkancrossfadepipelineprivate.h
index da5e820365..92551c5d46 100644
--- a/gsk/vulkan/gskvulkancrossfadepipelineprivate.h
+++ b/gsk/vulkan/gskvulkancrossfadepipelineprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_CROSS_FADE_PIPELINE_PRIVATE_H__
-#define __GSK_VULKAN_CROSS_FADE_PIPELINE_PRIVATE_H__
+#pragma once
 
 #include <graphene.h>
 
@@ -32,4 +31,3 @@ gsize               gsk_vulkan_cross_fade_pipeline_draw                (GskVulka
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_CROSS_FADE_PIPELINE_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkaneffectpipelineprivate.h b/gsk/vulkan/gskvulkaneffectpipelineprivate.h
index 45ac6af9c8..b08ea07e15 100644
--- a/gsk/vulkan/gskvulkaneffectpipelineprivate.h
+++ b/gsk/vulkan/gskvulkaneffectpipelineprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_EFFECT_PIPELINE_PRIVATE_H__
-#define __GSK_VULKAN_EFFECT_PIPELINE_PRIVATE_H__
+#pragma once
 
 #include <graphene.h>
 
@@ -32,4 +31,3 @@ gsize                   gsk_vulkan_effect_pipeline_draw                 (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_EFFECT_PIPELINE_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanglyphcacheprivate.h b/gsk/vulkan/gskvulkanglyphcacheprivate.h
index b31711fe6d..e7520937b7 100644
--- a/gsk/vulkan/gskvulkanglyphcacheprivate.h
+++ b/gsk/vulkan/gskvulkanglyphcacheprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_GLYPH_CACHE_PRIVATE_H__
-#define __GSK_VULKAN_GLYPH_CACHE_PRIVATE_H__
+#pragma once
 
 #include <pango/pango.h>
 #include "gskvulkanrendererprivate.h"
@@ -29,4 +28,3 @@ GskVulkanCachedGlyph *gsk_vulkan_glyph_cache_lookup         (GskVulkanGlyphCache
 
 void                  gsk_vulkan_glyph_cache_begin_frame    (GskVulkanGlyphCache *cache);
 
-#endif /* __GSK_VULKAN_GLYPH_CACHE_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanimageprivate.h b/gsk/vulkan/gskvulkanimageprivate.h
index e775fe0b2c..fe82d74922 100644
--- a/gsk/vulkan/gskvulkanimageprivate.h
+++ b/gsk/vulkan/gskvulkanimageprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_IMAGE_PRIVATE_H__
-#define __GSK_VULKAN_IMAGE_PRIVATE_H__
+#pragma once
 
 #include <gdk/gdk.h>
 
@@ -64,4 +63,3 @@ VkImageView             gsk_vulkan_image_get_image_view                 (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_IMAGE_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanlineargradientpipelineprivate.h b/gsk/vulkan/gskvulkanlineargradientpipelineprivate.h
index 71b6559dc2..176cd92a70 100644
--- a/gsk/vulkan/gskvulkanlineargradientpipelineprivate.h
+++ b/gsk/vulkan/gskvulkanlineargradientpipelineprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_LINEAR_GRADIENT_PIPELINE_PRIVATE_H__
-#define __GSK_VULKAN_LINEAR_GRADIENT_PIPELINE_PRIVATE_H__
+#pragma once
 
 #include <graphene.h>
 
@@ -39,4 +38,3 @@ gsize                   gsk_vulkan_linear_gradient_pipeline_draw        (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_LINEAR_GRADIENT_PIPELINE_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanmemoryprivate.h b/gsk/vulkan/gskvulkanmemoryprivate.h
index 010c133018..e8f0d932ed 100644
--- a/gsk/vulkan/gskvulkanmemoryprivate.h
+++ b/gsk/vulkan/gskvulkanmemoryprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_MEMORY_PRIVATE_H__
-#define __GSK_VULKAN_MEMORY_PRIVATE_H__
+#pragma once
 
 #include <gdk/gdk.h>
 
@@ -20,4 +19,3 @@ void                    gsk_vulkan_memory_unmap                         (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_MEMORY_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanpipelineprivate.h b/gsk/vulkan/gskvulkanpipelineprivate.h
index 9adf44a1b6..3deeee978f 100644
--- a/gsk/vulkan/gskvulkanpipelineprivate.h
+++ b/gsk/vulkan/gskvulkanpipelineprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_PIPELINE_PRIVATE_H__
-#define __GSK_VULKAN_PIPELINE_PRIVATE_H__
+#pragma once
 
 #include <gdk/gdk.h>
 
@@ -50,4 +49,3 @@ VkPipelineLayout        gsk_vulkan_pipeline_get_pipeline_layout         (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_PIPELINE_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanpushconstantsprivate.h b/gsk/vulkan/gskvulkanpushconstantsprivate.h
index 4f6db24c5f..a52a6fe689 100644
--- a/gsk/vulkan/gskvulkanpushconstantsprivate.h
+++ b/gsk/vulkan/gskvulkanpushconstantsprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_PUSH_CONSTANTS_PRIVATE_H__
-#define __GSK_VULKAN_PUSH_CONSTANTS_PRIVATE_H__
+#pragma once
 
 #include <gdk/gdk.h>
 #include <graphene.h>
@@ -42,4 +41,3 @@ void                    gsk_vulkan_push_constants_push                  (const G
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_PUSH_CONSTANTS_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanrenderer.h b/gsk/vulkan/gskvulkanrenderer.h
index 7f9c642d79..d461e0876b 100644
--- a/gsk/vulkan/gskvulkanrenderer.h
+++ b/gsk/vulkan/gskvulkanrenderer.h
@@ -15,8 +15,7 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GSK_VULKAN_RENDERER_H__
-#define __GSK_VULKAN_RENDERER_H__
+#pragma once
 
 #include <gdk/gdk.h>
 #include <gsk/gskrenderer.h>
@@ -53,4 +52,3 @@ G_END_DECLS
 
 #endif /* GDK_WINDOWING_VULKAN */
 
-#endif /* __GSK_VULKAN_RENDERER_H__ */
diff --git a/gsk/vulkan/gskvulkanrendererprivate.h b/gsk/vulkan/gskvulkanrendererprivate.h
index eca34ccabd..bbd43064d9 100644
--- a/gsk/vulkan/gskvulkanrendererprivate.h
+++ b/gsk/vulkan/gskvulkanrendererprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_RENDERER_PRIVATE_H__
-#define __GSK_VULKAN_RENDERER_PRIVATE_H__
+#pragma once
 
 #include "gskvulkanrenderer.h"
 #include "gskvulkanimageprivate.h"
@@ -48,4 +47,3 @@ GskVulkanCachedGlyph * gsk_vulkan_renderer_get_cached_glyph (GskVulkanRenderer *
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_RENDERER_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanrenderpassprivate.h b/gsk/vulkan/gskvulkanrenderpassprivate.h
index 379db3bac2..fa5089a714 100644
--- a/gsk/vulkan/gskvulkanrenderpassprivate.h
+++ b/gsk/vulkan/gskvulkanrenderpassprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_RENDER_PASS_PRIVATE_H__
-#define __GSK_VULKAN_RENDER_PASS_PRIVATE_H__
+#pragma once
 
 #include <gdk/gdk.h>
 #include <gsk/gskrendernode.h>
@@ -42,4 +41,3 @@ gsize                   gsk_vulkan_render_pass_get_signal_semaphores    (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_RENDER_PASS_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanrenderprivate.h b/gsk/vulkan/gskvulkanrenderprivate.h
index 29f37eb95d..1f7a23db38 100644
--- a/gsk/vulkan/gskvulkanrenderprivate.h
+++ b/gsk/vulkan/gskvulkanrenderprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_RENDER_PRIVATE_H__
-#define __GSK_VULKAN_RENDER_PRIVATE_H__
+#pragma once
 
 #include <gdk/gdk.h>
 #include <gsk/gskrendernode.h>
@@ -92,4 +91,3 @@ VkFramebuffer           gsk_vulkan_render_get_framebuffer               (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_RENDER_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkanshaderprivate.h b/gsk/vulkan/gskvulkanshaderprivate.h
index e94424f30a..3f35b6b77f 100644
--- a/gsk/vulkan/gskvulkanshaderprivate.h
+++ b/gsk/vulkan/gskvulkanshaderprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_SHADER_PRIVATE_H__
-#define __GSK_VULKAN_SHADER_PRIVATE_H__
+#pragma once
 
 #include <gdk/gdk.h>
 
@@ -31,4 +30,3 @@ VkShaderModule          gsk_vulkan_shader_get_module                    (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_SHADER_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkantextpipelineprivate.h b/gsk/vulkan/gskvulkantextpipelineprivate.h
index c186c4d983..59d0a2da45 100644
--- a/gsk/vulkan/gskvulkantextpipelineprivate.h
+++ b/gsk/vulkan/gskvulkantextpipelineprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_TEXT_PIPELINE_PRIVATE_H__
-#define __GSK_VULKAN_TEXT_PIPELINE_PRIVATE_H__
+#pragma once
 
 #include <graphene.h>
 
@@ -40,4 +39,3 @@ gsize                   gsk_vulkan_text_pipeline_draw                  (GskVulka
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_TEXT_PIPELINE_PRIVATE_H__ */
diff --git a/gsk/vulkan/gskvulkantexturepipelineprivate.h b/gsk/vulkan/gskvulkantexturepipelineprivate.h
index c6435c41ad..a4f5f8b173 100644
--- a/gsk/vulkan/gskvulkantexturepipelineprivate.h
+++ b/gsk/vulkan/gskvulkantexturepipelineprivate.h
@@ -1,5 +1,4 @@
-#ifndef __GSK_VULKAN_TEXTURE_PIPELINE_PRIVATE_H__
-#define __GSK_VULKAN_TEXTURE_PIPELINE_PRIVATE_H__
+#pragma once
 
 #include <graphene.h>
 
@@ -30,4 +29,3 @@ gsize                   gsk_vulkan_texture_pipeline_draw                (GskVulk
 
 G_END_DECLS
 
-#endif /* __GSK_VULKAN_TEXTURE_PIPELINE_PRIVATE_H__ */