From fd67ec238578f92f39e887106dc7396b05c33b0a Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Thu, 4 Feb 2021 21:30:08 +0100
Subject: [PATCH] vr:: improved performance?

---
 graph.cpp |  2 ++
 vr.cpp    | 18 +++++++++++++-----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/graph.cpp b/graph.cpp
index 32d569f1..cba2dda4 100644
--- a/graph.cpp
+++ b/graph.cpp
@@ -5313,6 +5313,8 @@ EX void drawscreen() {
 #endif
   SDL_UpdateRect(s, 0, 0, vid.xres, vid.yres);
 #endif
+
+  vrhr::handoff();
   
 //printf("\ec");
   }
diff --git a/vr.cpp b/vr.cpp
index 2cfa8a68..15258e66 100644
--- a/vr.cpp
+++ b/vr.cpp
@@ -302,11 +302,13 @@ vr_rendermodel *get_render_model(string name) {
   return md;
   }
 
-void track_all() {
-  track_actions();
+EX bool need_poses = true;
 
+void track_poses() {
   E4;
-  // println(hlog, "tracking");
+
+  if(!need_poses) return;
+  need_poses = false;
   vr::VRCompositor()->WaitGetPoses(vrdata.poses, vr::k_unMaxTrackedDeviceCount, NULL, 0 );
   // println(hlog, "poses received");
   
@@ -405,7 +407,8 @@ EX void vr_control() {
     start_vr();
     }
   if(state == 1) {
-    track_all();
+    track_actions();
+    need_poses = true;
     }
   static bool last_vr_clicked = false;
   
@@ -935,7 +938,7 @@ EX void gen_mv() {
   }
 
 EX void render() {
-
+  track_poses();  
   resetbuffer rb;
   state = 2;
   
@@ -1418,6 +1421,11 @@ EX void submit() {
     }
   }
 
+EX void handoff() {
+  if(!state) return;
+  vr::VRCompositor()->PostPresentHandoff();  
+  }
+
 #endif
 
 EX }