Style: Enforce separation line between function definitions

I couldn't find a tool that enforces it, so I went the manual route:
```
find -name "thirdparty" -prune \
  -o -name "*.cpp" -o -name "*.h" -o -name "*.m" -o -name "*.mm" \
  -o -name "*.glsl" > files
perl -0777 -pi -e 's/\n}\n([^#])/\n}\n\n\1/g' $(cat files)
misc/scripts/fix_style.sh -c
```

This adds a newline after all `}` on the first column, unless they
are followed by `#` (typically `#endif`). This leads to having lots
of places with two lines between function/class definitions, but
clang-format then fixes it as we enforce max one line of separation.

This doesn't fix potential occurrences of function definitions which
are indented (e.g. for a helper class defined in a .cpp), but it's
better than nothing. Also can't be made to run easily on CI/hooks so
we'll have to be careful with new code.

Part of #33027.

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gles2/rasterizer_scene_gles2.cpp b/drivers/gles2/rasterizer_scene_gles2.cpp
index 02e9d7d504..c66506f182 100644
--- a/drivers/gles2/rasterizer_scene_gles2.cpp
+++ b/drivers/gles2/rasterizer_scene_gles2.cpp
@@ -460,6 +460,7 @@ int RasterizerSceneGLES2::get_directional_light_shadow_size(RID p_light_intance)
 
 	return shadow_size;
 }
+
 //////////////////////////////////////////////////////
 
 RID RasterizerSceneGLES2::reflection_atlas_create() {
@@ -840,6 +841,7 @@ void RasterizerSceneGLES2::environment_set_fog_height(RID p_env, bool p_enable,
 	env->fog_height_max = p_max_height;
 	env->fog_height_curve = p_height_curve;
 }
+
 bool RasterizerSceneGLES2::is_environment(RID p_env) {
 	return environment_owner.owns(p_env);
 }
@@ -917,6 +919,7 @@ RID RasterizerSceneGLES2::gi_probe_instance_create() {
 
 void RasterizerSceneGLES2::gi_probe_instance_set_light_data(RID p_probe, RID p_base, RID p_data) {
 }
+
 void RasterizerSceneGLES2::gi_probe_instance_set_transform_to_data(RID p_probe, const Transform &p_xform) {
 }
 
@@ -965,6 +968,7 @@ void RasterizerSceneGLES2::_add_geometry(RasterizerStorageGLES2::Geometry *p_geo
 		_add_geometry_with_material(p_geometry, p_instance, p_owner, material, p_depth_pass, p_shadow_pass);
 	}
 }
+
 void RasterizerSceneGLES2::_add_geometry_with_material(RasterizerStorageGLES2::Geometry *p_geometry, InstanceBase *p_instance, RasterizerStorageGLES2::GeometryOwner *p_owner, RasterizerStorageGLES2::Material *p_material, bool p_depth_pass, bool p_shadow_pass) {
 	bool has_base_alpha = (p_material->shader->spatial.uses_alpha && !p_material->shader->spatial.uses_alpha_scissor) || p_material->shader->spatial.uses_screen_texture || p_material->shader->spatial.uses_depth_texture;
 	bool has_blend_alpha = p_material->shader->spatial.blend_mode != RasterizerStorageGLES2::Shader::Spatial::BLEND_MODE_MIX;