From 405ca571ad31d6bbd99de96e87cb0564d5daa60b Mon Sep 17 00:00:00 2001
From: Lubos <tridosm@gmail.com>
Date: Sat, 30 Apr 2022 14:10:27 +0200
Subject: [PATCH] OpenXR foveation removed

---
 android/app/src/main/cpp/code/vr/vr_base.c    |  6 +-
 .../app/src/main/cpp/code/vr/vr_renderer.c    |  8 ---
 android/app/src/main/cpp/code/vr/vr_types.c   | 57 -------------------
 android/app/src/main/cpp/code/vr/vr_types.h   |  7 ---
 4 files changed, 1 insertion(+), 77 deletions(-)

diff --git a/android/app/src/main/cpp/code/vr/vr_base.c b/android/app/src/main/cpp/code/vr/vr_base.c
index 1e019a31..c6d17a0e 100644
--- a/android/app/src/main/cpp/code/vr/vr_base.c
+++ b/android/app/src/main/cpp/code/vr/vr_base.c
@@ -16,11 +16,7 @@ const char* const requiredExtensionNames[] = {
         XR_EXT_PERFORMANCE_SETTINGS_EXTENSION_NAME,
         XR_KHR_ANDROID_THREAD_SETTINGS_EXTENSION_NAME,
         XR_KHR_COMPOSITION_LAYER_CYLINDER_EXTENSION_NAME,
-        XR_FB_DISPLAY_REFRESH_RATE_EXTENSION_NAME,
-        XR_FB_SWAPCHAIN_UPDATE_STATE_EXTENSION_NAME,
-        XR_FB_SWAPCHAIN_UPDATE_STATE_OPENGL_ES_EXTENSION_NAME,
-        XR_FB_FOVEATION_EXTENSION_NAME,
-        XR_FB_FOVEATION_CONFIGURATION_EXTENSION_NAME};
+        XR_FB_DISPLAY_REFRESH_RATE_EXTENSION_NAME};
 const uint32_t numRequiredExtensions =
         sizeof(requiredExtensionNames) / sizeof(requiredExtensionNames[0]);
 
diff --git a/android/app/src/main/cpp/code/vr/vr_renderer.c b/android/app/src/main/cpp/code/vr/vr_renderer.c
index c7c218ec..14f7bc7e 100644
--- a/android/app/src/main/cpp/code/vr/vr_renderer.c
+++ b/android/app/src/main/cpp/code/vr/vr_renderer.c
@@ -270,14 +270,6 @@ void VR_InitRenderer( engine_t* engine ) {
             &engine->appState.Renderer,
             engine->appState.ViewConfigurationView[0].recommendedImageRectWidth,
             engine->appState.ViewConfigurationView[0].recommendedImageRectHeight);
-
-    ovrRenderer_SetFoveation(
-            &engine->appState.Instance,
-            &engine->appState.Session,
-            &engine->appState.Renderer,
-            XR_FOVEATION_LEVEL_HIGH_FB,
-            0,
-            XR_FOVEATION_DYNAMIC_DISABLED_FB);
 }
 
 void VR_DestroyRenderer( engine_t* engine )
diff --git a/android/app/src/main/cpp/code/vr/vr_types.c b/android/app/src/main/cpp/code/vr/vr_types.c
index 99a6f396..7cfbaada 100644
--- a/android/app/src/main/cpp/code/vr/vr_types.c
+++ b/android/app/src/main/cpp/code/vr/vr_types.c
@@ -73,12 +73,6 @@ bool ovrFramebuffer_Create(
     swapChainCreateInfo.arraySize = 2;
     swapChainCreateInfo.mipCount = 1;
 
-    // Enable Foveation on this swapchain
-    XrSwapchainCreateInfoFoveationFB swapChainFoveationCreateInfo;
-    memset(&swapChainFoveationCreateInfo, 0, sizeof(swapChainFoveationCreateInfo));
-    swapChainFoveationCreateInfo.type = XR_TYPE_SWAPCHAIN_CREATE_INFO_FOVEATION_FB;
-    swapChainCreateInfo.next = &swapChainFoveationCreateInfo;
-
     frameBuffer->ColorSwapChain.Width = swapChainCreateInfo.width;
     frameBuffer->ColorSwapChain.Height = swapChainCreateInfo.height;
 
@@ -226,57 +220,6 @@ void ovrRenderer_Destroy(ovrRenderer* renderer) {
     ovrFramebuffer_Destroy(&renderer->FrameBuffer);
 }
 
-void ovrRenderer_SetFoveation(
-        XrInstance* instance,
-        XrSession* session,
-        ovrRenderer* renderer,
-        XrFoveationLevelFB level,
-        float verticalOffset,
-        XrFoveationDynamicFB dynamic) {
-    PFN_xrCreateFoveationProfileFB pfnCreateFoveationProfileFB;
-    OXR(xrGetInstanceProcAddr(
-            *instance,
-            "xrCreateFoveationProfileFB",
-            (PFN_xrVoidFunction*)(&pfnCreateFoveationProfileFB)));
-
-    PFN_xrDestroyFoveationProfileFB pfnDestroyFoveationProfileFB;
-    OXR(xrGetInstanceProcAddr(
-            *instance,
-            "xrDestroyFoveationProfileFB",
-            (PFN_xrVoidFunction*)(&pfnDestroyFoveationProfileFB)));
-
-    PFN_xrUpdateSwapchainFB pfnUpdateSwapchainFB;
-    OXR(xrGetInstanceProcAddr(
-            *instance, "xrUpdateSwapchainFB", (PFN_xrVoidFunction*)(&pfnUpdateSwapchainFB)));
-
-    XrFoveationLevelProfileCreateInfoFB levelProfileCreateInfo;
-    memset(&levelProfileCreateInfo, 0, sizeof(levelProfileCreateInfo));
-    levelProfileCreateInfo.type = XR_TYPE_FOVEATION_LEVEL_PROFILE_CREATE_INFO_FB;
-    levelProfileCreateInfo.level = level;
-    levelProfileCreateInfo.verticalOffset = verticalOffset;
-    levelProfileCreateInfo.dynamic = dynamic;
-
-    XrFoveationProfileCreateInfoFB profileCreateInfo;
-    memset(&profileCreateInfo, 0, sizeof(profileCreateInfo));
-    profileCreateInfo.type = XR_TYPE_FOVEATION_PROFILE_CREATE_INFO_FB;
-    profileCreateInfo.next = &levelProfileCreateInfo;
-
-    XrFoveationProfileFB foveationProfile;
-
-    pfnCreateFoveationProfileFB(*session, &profileCreateInfo, &foveationProfile);
-
-    XrSwapchainStateFoveationFB foveationUpdateState;
-    memset(&foveationUpdateState, 0, sizeof(foveationUpdateState));
-    foveationUpdateState.type = XR_TYPE_SWAPCHAIN_STATE_FOVEATION_FB;
-    foveationUpdateState.profile = foveationProfile;
-
-    pfnUpdateSwapchainFB(
-            renderer->FrameBuffer.ColorSwapChain.Handle,
-            (XrSwapchainStateBaseHeaderFB*)(&foveationUpdateState));
-
-    pfnDestroyFoveationProfileFB(foveationProfile);
-}
-
 /*
 ================================================================================
 
diff --git a/android/app/src/main/cpp/code/vr/vr_types.h b/android/app/src/main/cpp/code/vr/vr_types.h
index 3f61db75..9e6c0816 100644
--- a/android/app/src/main/cpp/code/vr/vr_types.h
+++ b/android/app/src/main/cpp/code/vr/vr_types.h
@@ -173,13 +173,6 @@ void ovrRenderer_Create(
 		int suggestedEyeTextureWidth,
 		int suggestedEyeTextureHeight);
 void ovrRenderer_Destroy(ovrRenderer* renderer);
-void ovrRenderer_SetFoveation(
-		XrInstance* instance,
-		XrSession* session,
-		ovrRenderer* renderer,
-		XrFoveationLevelFB level,
-		float verticalOffset,
-		XrFoveationDynamicFB dynamic);
 
 void ovrTrackedController_Clear(ovrTrackedController* controller);