Add option to have viewport render into supplied texture

2 files changed, 6 insertions, 0 deletions

diff --git a/servers/arvr/arvr_interface.cpp b/servers/arvr/arvr_interface.cpp
index 3e59daff6c..686ad0ba9b 100644
--- a/servers/arvr/arvr_interface.cpp
+++ b/servers/arvr/arvr_interface.cpp
@@ -123,6 +123,11 @@ ARVRInterface::ARVRInterface() {
 
 ARVRInterface::~ARVRInterface(){};
 
+// optional render to external texture which enhances performance on those platforms that require us to submit our end result into special textures.
+unsigned int ARVRInterface::get_external_texture_for_eye(ARVRInterface::Eyes p_eye) {
+	return 0;
+};
+
 /** these will only be implemented on AR interfaces, so we want dummies for VR **/
 bool ARVRInterface::get_anchor_detection_is_enabled() const {
 	return false;
diff --git a/servers/arvr/arvr_interface.h b/servers/arvr/arvr_interface.h
index 6908f3006a..8459a82388 100644
--- a/servers/arvr/arvr_interface.h
+++ b/servers/arvr/arvr_interface.h
@@ -108,6 +108,7 @@ public:
 	virtual bool is_stereo() = 0; /* returns true if this interface requires stereo rendering (for VR HMDs) or mono rendering (for mobile AR) */
 	virtual Transform get_transform_for_eye(ARVRInterface::Eyes p_eye, const Transform &p_cam_transform) = 0; /* get each eyes camera transform, also implement EYE_MONO */
 	virtual CameraMatrix get_projection_for_eye(ARVRInterface::Eyes p_eye, real_t p_aspect, real_t p_z_near, real_t p_z_far) = 0; /* get each eyes projection matrix */
+	virtual unsigned int get_external_texture_for_eye(ARVRInterface::Eyes p_eye); /* if applicable return external texture to render to */
 	virtual void commit_for_eye(ARVRInterface::Eyes p_eye, RID p_render_target, const Rect2 &p_screen_rect) = 0; /* output the left or right eye */
 
 	virtual void process() = 0;