Implement Vector4, Vector4i, Projection

Implement built-in classes Vector4, Vector4i and Projection.

* Two versions of Vector4 (float and integer).
* A Projection class, which is a 4x4 matrix specialized in projection types.

These types have been requested for a long time, but given they were very corner case they were not added before.
Because in Godot 4, reimplementing parts of the rendering engine is now possible, access to these types (heavily used by the rendering code) becomes a necessity.

**Q**: Why Projection and not Matrix4?
**A**: Godot does not use Matrix2, Matrix3, Matrix4x3, etc. naming convention because, within the engine, these types always have a *purpose*. As such, Godot names them: Transform2D, Transform3D or Basis. In this case, this 4x4 matrix is _always_ used as a _Projection_, hence the naming.

1 files changed, 2 insertions, 2 deletions

diff --git a/servers/rendering/dummy/rasterizer_scene_dummy.h b/servers/rendering/dummy/rasterizer_scene_dummy.h
index b49d6cff69..3e72998217 100644
--- a/servers/rendering/dummy/rasterizer_scene_dummy.h
+++ b/servers/rendering/dummy/rasterizer_scene_dummy.h
@@ -149,7 +149,7 @@ public:
 	RID light_instance_create(RID p_light) override { return RID(); }
 	void light_instance_set_transform(RID p_light_instance, const Transform3D &p_transform) override {}
 	void light_instance_set_aabb(RID p_light_instance, const AABB &p_aabb) override {}
-	void light_instance_set_shadow_transform(RID p_light_instance, const CameraMatrix &p_projection, const Transform3D &p_transform, float p_far, float p_split, int p_pass, float p_shadow_texel_size, float p_bias_scale = 1.0, float p_range_begin = 0, const Vector2 &p_uv_scale = Vector2()) override {}
+	void light_instance_set_shadow_transform(RID p_light_instance, const Projection &p_projection, const Transform3D &p_transform, float p_far, float p_split, int p_pass, float p_shadow_texel_size, float p_bias_scale = 1.0, float p_range_begin = 0, const Vector2 &p_uv_scale = Vector2()) override {}
 	void light_instance_mark_visible(RID p_light_instance) override {}
 
 	RID fog_volume_instance_create(RID p_fog_volume) override { return RID(); }
@@ -184,7 +184,7 @@ public:
 	void voxel_gi_set_quality(RS::VoxelGIQuality) override {}
 
 	void render_scene(RID p_render_buffers, const CameraData *p_camera_data, const CameraData *p_prev_camera_data, const PagedArray<GeometryInstance *> &p_instances, const PagedArray<RID> &p_lights, const PagedArray<RID> &p_reflection_probes, const PagedArray<RID> &p_voxel_gi_instances, const PagedArray<RID> &p_decals, const PagedArray<RID> &p_lightmaps, const PagedArray<RID> &p_fog_volumes, RID p_environment, RID p_camera_effects, RID p_shadow_atlas, RID p_occluder_debug_tex, RID p_reflection_atlas, RID p_reflection_probe, int p_reflection_probe_pass, float p_screen_mesh_lod_threshold, const RenderShadowData *p_render_shadows, int p_render_shadow_count, const RenderSDFGIData *p_render_sdfgi_regions, int p_render_sdfgi_region_count, const RenderSDFGIUpdateData *p_sdfgi_update_data = nullptr, RendererScene::RenderInfo *r_info = nullptr) override {}
-	void render_material(const Transform3D &p_cam_transform, const CameraMatrix &p_cam_projection, bool p_cam_orthogonal, const PagedArray<GeometryInstance *> &p_instances, RID p_framebuffer, const Rect2i &p_region) override {}
+	void render_material(const Transform3D &p_cam_transform, const Projection &p_cam_projection, bool p_cam_orthogonal, const PagedArray<GeometryInstance *> &p_instances, RID p_framebuffer, const Rect2i &p_region) override {}
 	void render_particle_collider_heightfield(RID p_collider, const Transform3D &p_transform, const PagedArray<GeometryInstance *> &p_instances) override {}
 
 	void set_scene_pass(uint64_t p_pass) override {}