Support for SSAO

2 files changed, 10 insertions, 0 deletions

diff --git a/core/math/camera_matrix.cpp b/core/math/camera_matrix.cpp
index 3e3cd1af4f..fc35908fa3 100644
--- a/core/math/camera_matrix.cpp
+++ b/core/math/camera_matrix.cpp
@@ -534,6 +534,15 @@ float CameraMatrix::get_aspect() const {
 	return w/h;
 }
 
+int CameraMatrix::get_pixels_per_meter(int p_for_pixel_width) const {
+
+
+	Vector3 result = xform(Vector3(1,0,-1));
+
+	return int((result.x * 0.5 + 0.5) * p_for_pixel_width);
+
+}
+
 float CameraMatrix::get_fov() const {
 	const float * matrix = (const float*)this->matrix;
 
diff --git a/core/math/camera_matrix.h b/core/math/camera_matrix.h
index bf8cf3592e..7fcff63768 100644
--- a/core/math/camera_matrix.h
+++ b/core/math/camera_matrix.h
@@ -87,6 +87,7 @@ struct CameraMatrix {
 
 	void scale_translate_to_fit(const AABB& p_aabb);
 	void make_scale(const Vector3 &p_scale);
+	int get_pixels_per_meter(int p_for_pixel_width) const;
 	operator Transform() const;
 
 	CameraMatrix();