.gitignore

@@ -1,2 +1 @@
 overlay
-.vscode/

Makefile

@@ -1,17 +1,7 @@
 
-# CC := g++
-CC := clang++
-LFLAGS := -lX11 -lXrandr -lglfw -lGL
-LIBS := openvr/libopenvr_api.so
-SRC := src/*.cpp
-OUT := ./overlay
-CPPFLAGS := -Wall -std=c++17 $(LFLAGS) $(LIBS) $(SRC) -o $(OUT)
 
 build:
-	$(CC) -g $(CPPFLAGS)
-
-release:
-	$(CC) $(CPPFLAGS)
+	g++ -Wall -lX11 -lXrandr -lglfw -lGL openvr/libopenvr_api.so src/*.cpp -o overlay
 
 run: build
 	./overlay

src/app.cpp

@@ -1,4 +1,5 @@
 #include "app.h"
+#include "panel.h"
 #include <X11/extensions/Xrandr.h>
 #include <cassert>
 
@@ -9,7 +10,6 @@ App::App()
 	InitOVR();
 	InitX11();
 	InitGLFW();
-	InitRootOverlay();
 	printf("\n");
 
 	glGenTextures(1, &_gl_frame);
@@ -21,23 +21,18 @@ App::App()
 	printf("found %d monitors:\n", monitor_count);
 
 	float pixels_per_meter = 1920;
-	float total_width_meters = _root_width / pixels_per_meter;
-	float total_height_meters = _root_height / pixels_per_meter;
+	float x_min = -(monitor_info[0].x + monitor_info[0].width / 2.0f);
+	// float x_min = _root_width / -2.0f;
 
 	for (int i = 0; i < monitor_count; i++)
 	{
 		XRRMonitorInfo mon = monitor_info[i];
 		printf("screen %d: pos(%d, %d) %dx%d\n", i, mon.x, mon.y, mon.width, mon.height);
 
-		_panels.push_back(Panel(this, i, mon.x, mon.y, mon.width, mon.height));
-
-		float width = mon.width / pixels_per_meter;
-		float pos_x = mon.x / pixels_per_meter + width / 2.0f - total_width_meters / 2.0f;
-		float height = mon.height / pixels_per_meter;
-		float pos_y = 1.2f + mon.y / pixels_per_meter - height / 2.0f + total_height_meters / 2.0f;
-		VRMat start_pose = {{{1, 0, 0, pos_x}, {0, 1, 0, pos_y}, {0, 0, 1, 0}}};
-		_panels[i].GetOverlay()->SetTransformWorld(&start_pose);
-		_panels[i].GetOverlay()->SetWidth(width);
+		float pos_x = (x_min + mon.x) / pixels_per_meter;
+		float pos_y = 1.2f;
+		vr::HmdMatrix34_t start_pose = {{{1, 0, 0, pos_x}, {0, 1, 0, pos_y}, {0, 0, 1, 0}}};
+		_panels.push_back(Panel(this, start_pose, i, mon.x, mon.y, mon.width, mon.height));
 	}
 
 	{ // initialize SteamVR input
@@ -107,40 +102,11 @@ void App::InitGLFW()
 	printf("Created GLFW context\n");
 }
 
-void App::InitRootOverlay()
-{
-	_root_overlay = Overlay(this, "root");
-	_root_overlay.SetAlpha(0.2f);
-	// clang-format off
-	VRMat root_start_pose = {{
-		{0.25f,	0.0f,	0.0f, 0},
-		{0.0f,	0.25f,	0.0f, 0.8f},
-		{0.0f,	0.0f,	1.0f, 0}
-	}};
-	// clang-format on
-	_root_overlay.SetTransformWorld(&root_start_pose);
-
-	_root_overlay._GrabBeginCallback = [this](TrackerID controller) {
-		for (auto &panel : _panels)
-		{
-			panel.GetOverlay()->ControllerGrab(controller);
-		}
-	};
-	_root_overlay._GrabEndCallback = [this](TrackerID controller) {
-		for (auto &panel : _panels)
-		{
-			panel.GetOverlay()->ControllerRelease();
-		}
-	};
-	printf("Created root overlay instance\n");
-}
-
 void App::Update()
 {
 	UpdateInput();
 	if (!_hidden)
 	{
-		_root_overlay.Update();
 		UpdateFramebuffer();
 		for (auto &panel : _panels)
 		{
@@ -163,7 +129,6 @@ void App::UpdateInput()
 		if (IsInputJustPressed(i, _input_handles.toggle))
 		{
 			_hidden = !_hidden;
-			_root_overlay.SetHidden(_hidden);
 			for (auto &panel : _panels)
 			{
 				panel.SetHidden(_hidden);

src/app.h

@@ -1,14 +1,14 @@
 #pragma once
 #define GL_GLEXT_PROTOTYPES
 
-#include "overlay.h"
-#include "panel.h"
 #include "util.h"
 #include <GLFW/glfw3.h>
 #include <X11/Xutil.h>
 #include <filesystem>
 #include <vector>
 
+class Panel;
+
 struct CursorPos
 {
 	int x, y;
@@ -54,7 +54,6 @@ class App
 	InputHandles _input_handles;
 	vr::TrackedDevicePose_t _tracker_poses[vr::k_unMaxTrackedDeviceCount];
 
-	Overlay _root_overlay;
 	std::vector<Panel> _panels;
 	bool _hidden = false;
 
@@ -62,7 +61,6 @@ class App
 	void InitX11();
 	void InitOVR();
 	void InitGLFW();
-	void InitRootOverlay();
 
 	void UpdateFramebuffer();
 	void UpdateInput();

src/grab_component.cpp

@@ -0,0 +1,94 @@
+#include "grab_component.h"
+
+GrabComponent::GrabComponent(App *app)
+{
+	_app = app;
+	_is_held = false;
+	_active_hand = 0;
+}
+
+void GrabComponent::Update(OverlayID id, float *meters)
+{
+	_id = id;
+
+	if (!_is_held)
+	{
+		for (auto controller : _app->GetControllers())
+		{
+			if (_app->IsInputJustPressed(controller, _app->_input_handles.grab))
+			{
+				vr::HmdMatrix34_t overlay_pose;
+				vr::ETrackingUniverseOrigin tracking_universe;
+				_app->vr_overlay->GetOverlayTransformAbsolute(id, &tracking_universe, &overlay_pose);
+
+				auto controller_pos = GetPos(_app->GetTrackerPose(controller));
+
+				auto local_pos = glm::inverse(ConvertMat(overlay_pose)) * glm::vec4(controller_pos - GetPos(overlay_pose), 0);
+
+				float grab_area_thickness = 0.3f;
+				bool close_enough = glm::abs(local_pos.z) < grab_area_thickness;
+				close_enough &= glm::abs(local_pos.x) < *meters / 2.0f;
+				close_enough &= glm::abs(local_pos.y) < *meters / 2.0f;
+
+				if (close_enough)
+				{
+					ControllerGrab(controller);
+				}
+			}
+		}
+	}
+	else
+	{
+		if (!_app->GetControllerInputDigital(_active_hand, _app->_input_handles.grab).bState)
+		{
+			ControllerRelease();
+		}
+	}
+}
+
+bool GrabComponent::IsHeld()
+{
+	return _is_held;
+}
+
+TrackerID GrabComponent::ActiveHand()
+{
+	return _active_hand;
+}
+
+void GrabComponent::ControllerGrab(TrackerID controller)
+{
+	_is_held = true;
+	_active_hand = controller;
+
+	_app->vr_overlay->SetOverlayColor(_id, 0.6f, 0.8f, 0.8f);
+
+	vr::HmdMatrix34_t abs_pose;
+	vr::ETrackingUniverseOrigin tracking_universe;
+	_app->vr_overlay->GetOverlayTransformAbsolute(_id, &tracking_universe, &abs_pose);
+
+	auto abs_mat = ConvertMat(abs_pose);
+	auto controller_mat = _app->GetTrackerPose(controller);
+
+	vr::HmdMatrix34_t relative_pose = ConvertMat(glm::inverse(controller_mat) * (abs_mat));
+
+	_app->vr_overlay->SetOverlayTransformTrackedDeviceRelative(_id, controller, &relative_pose);
+}
+
+void GrabComponent::ControllerRelease()
+{
+	_is_held = false;
+	_active_hand = -1;
+
+	_app->vr_overlay->SetOverlayColor(_id, 1.0f, 1.0f, 1.0f);
+
+	vr::HmdMatrix34_t relative_pose;
+	_app->vr_overlay->GetOverlayTransformTrackedDeviceRelative(_id, &_active_hand, &relative_pose);
+	auto relative_mat = ConvertMat(relative_pose);
+
+	auto controller_mat = _app->GetTrackerPose(_active_hand);
+
+	vr::HmdMatrix34_t new_pose = ConvertMat(controller_mat * relative_mat);
+
+	_app->vr_overlay->SetOverlayTransformAbsolute(_id, _app->_tracking_origin, &new_pose);
+}

src/grab_component.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "app.h"
+#include "util.h"
+
+class GrabComponent
+{
+  public:
+	GrabComponent(App *app);
+	bool IsHeld();
+	TrackerID ActiveHand();
+	void Update(OverlayID id, float *meters);
+
+  private:
+	void ControllerRelease();
+	void ControllerGrab(TrackerID controller);
+
+	App *_app;
+	OverlayID _id;
+
+	bool _is_held;
+	TrackerID _active_hand;
+};

src/overlay.cpp

@@ -1,222 +0,0 @@
-#include "overlay.h"
-#include "app.h"
-#include "util.h"
-#include <glm/fwd.hpp>
-
-Overlay::Overlay()
-{
-	_initialized = false;
-}
-
-Overlay::Overlay(App *app, std::string name)
-{
-	_initialized = true;
-	_name = name;
-	_app = app;
-	_is_held = false;
-	_active_hand = 0;
-	_width_m = 1;
-
-	_target.type = TargetType::World;
-
-	auto overlay_create_err = _app->vr_overlay->CreateOverlay(_name.c_str(), _name.c_str(), &_id);
-	assert(overlay_create_err == 0);
-	{
-		vr::ETrackingUniverseOrigin origin;
-		_app->vr_overlay->GetOverlayTransformAbsolute(_id, &origin, &_target.transform);
-	}
-
-	uint8_t col[4] = {20, 50, 50, 255};
-	_app->vr_overlay->SetOverlayRaw(_id, &col, 1, 1, 4);
-	printf("Created overlay instance %s\n", _name.c_str());
-
-	// (flipping uv on y axis because opengl and xorg are opposite)
-	vr::VRTextureBounds_t bounds{0, 1, 1, 0};
-	_app->vr_overlay->SetOverlayTextureBounds(_id, &bounds);
-	SetHidden(false);
-}
-
-OverlayID Overlay::Id()
-{
-	return _id;
-}
-
-bool Overlay::IsHeld()
-{
-	return _is_held;
-}
-
-TrackerID Overlay::ActiveHand()
-{
-	return _active_hand;
-}
-
-bool Overlay::IsHidden()
-{
-	return _hidden;
-}
-
-float Overlay::Alpha()
-{
-	return _alpha;
-}
-
-float Overlay::Width()
-{
-	return _width_m;
-}
-
-void Overlay::SetWidth(float width_meters)
-{
-	_width_m = width_meters;
-	_app->vr_overlay->SetOverlayWidthInMeters(_id, _width_m);
-}
-
-void Overlay::SetHidden(bool state)
-{
-	_hidden = state;
-	if (_hidden)
-		_app->vr_overlay->HideOverlay(_id);
-	else
-		_app->vr_overlay->ShowOverlay(_id);
-}
-
-void Overlay::SetAlpha(float alpha)
-{
-	_alpha = alpha;
-	_app->vr_overlay->SetOverlayAlpha(_id, alpha);
-}
-
-void Overlay::SetTexture(vr::Texture_t *texture)
-{
-	auto set_texture_err = _app->vr_overlay->SetOverlayTexture(_id, texture);
-	assert(set_texture_err == 0);
-}
-
-void Overlay::SetTransformTracker(TrackerID tracker, VRMat *transform)
-{
-	_app->vr_overlay->SetOverlayTransformTrackedDeviceRelative(_id, tracker, transform);
-	_target.type = TargetType::Tracker;
-	_target.id = tracker;
-	_target.transform = *transform;
-}
-
-void Overlay::SetTransformWorld(VRMat *transform)
-{
-	_app->vr_overlay->SetOverlayTransformAbsolute(_id, vr::TrackingUniverseStanding, transform);
-	_target.type = TargetType::World;
-	_target.transform = *transform;
-}
-
-void Overlay::SetTargetWorld()
-{
-	auto abs_pose = ConvertMat(GetTransformAbsolute());
-	_app->vr_overlay->SetOverlayTransformAbsolute(_id, vr::TrackingUniverseStanding, &abs_pose);
-	_target.type = TargetType::World;
-}
-
-glm::mat4x4 Overlay::GetTransformAbsolute()
-{
-	if (_is_held)
-	{
-		VRMat pose;
-		auto err = _app->vr_overlay->GetOverlayTransformTrackedDeviceRelative(_id, &_active_hand, &pose);
-		assert(err == 0);
-		auto offset = ConvertMat(pose);
-		auto controller = _app->GetTrackerPose(_active_hand);
-		return controller * offset;
-	}
-	else
-	{
-		switch (_target.type)
-		{
-		case TargetType::World: {
-			VRMat pose;
-			vr::ETrackingUniverseOrigin tracking_universe;
-			_app->vr_overlay->GetOverlayTransformAbsolute(_id, &tracking_universe, &pose);
-			return ConvertMat(pose);
-		}
-		case TargetType::Tracker: {
-			VRMat pose;
-			_app->vr_overlay->GetOverlayTransformTrackedDeviceRelative(_id, &_target.id, &pose);
-			auto offset = ConvertMat(pose);
-			auto tracker_pose = _app->GetTrackerPose(_target.id);
-			return tracker_pose * offset;
-		}
-		}
-	}
-}
-
-void Overlay::Update()
-{
-	if (!_initialized)
-	{
-		printf("Error: overlay %s is not initialized.\n", _name.c_str());
-		assert(_initialized);
-	}
-
-	if (!_is_held)
-	{
-		for (auto controller : _app->GetControllers())
-		{
-			if (_app->IsInputJustPressed(controller, _app->_input_handles.grab))
-			{
-				auto overlay_pose = GetTransformAbsolute();
-				auto controller_pos = GetPos(_app->GetTrackerPose(controller));
-
-				auto local_pos = glm::inverse(overlay_pose) * glm::vec4(controller_pos - GetPos(overlay_pose), 0);
-
-				float grab_area_thickness = 0.3f;
-				bool close_enough = glm::abs(local_pos.z) < grab_area_thickness;
-				close_enough &= glm::abs(local_pos.x) < _width_m / 2.0f;
-				close_enough &= glm::abs(local_pos.y) < _width_m / 2.0f;
-
-				if (close_enough)
-				{
-					ControllerGrab(controller);
-				}
-			}
-		}
-	}
-	else
-	{
-		if (!_app->GetControllerInputDigital(_active_hand, _app->_input_handles.grab).bState)
-		{
-			ControllerRelease();
-		}
-	}
-}
-
-void Overlay::ControllerGrab(TrackerID controller)
-{
-	_app->vr_overlay->SetOverlayColor(_id, 0.6f, 0.8f, 0.8f);
-
-	auto abs_mat = GetTransformAbsolute();
-	auto controller_mat = _app->GetTrackerPose(controller);
-	VRMat relative_pose = ConvertMat(glm::inverse(controller_mat) * abs_mat);
-
-	_app->vr_overlay->SetOverlayTransformTrackedDeviceRelative(_id, controller, &relative_pose);
-
-	if (_GrabBeginCallback != nullptr)
-	{
-		_GrabBeginCallback(controller);
-	}
-
-	_is_held = true;
-	_active_hand = controller;
-}
-
-void Overlay::ControllerRelease()
-{
-	_app->vr_overlay->SetOverlayColor(_id, 1.0f, 1.0f, 1.0f);
-
-	auto new_pose = ConvertMat(GetTransformAbsolute());
-	_app->vr_overlay->SetOverlayTransformAbsolute(_id, _app->_tracking_origin, &new_pose);
-
-	if (_GrabEndCallback != nullptr)
-	{
-		_GrabEndCallback(_active_hand);
-	}
-	_is_held = false;
-	_active_hand = -1;
-}

src/overlay.h

@@ -1,69 +0,0 @@
-#pragma once
-
-#include "util.h"
-#include <functional>
-#include <string>
-
-class App;
-
-enum class TargetType
-{
-	World,
-	Tracker,
-};
-
-struct Target
-{
-	TargetType type;
-	TrackerID id;
-	VRMat transform;
-};
-
-class Overlay
-{
-  public:
-	Overlay();
-	Overlay(App *app, std::string name);
-	void Update();
-
-	OverlayID Id();
-	bool IsHeld();
-	bool IsHidden();
-	TrackerID ActiveHand();
-	float Width();
-	float Alpha();
-
-	void SetWidth(float meters);
-	void SetHidden(bool state);
-	void SetAlpha(float alpha);
-	void SetTexture(vr::Texture_t *texture);
-
-	void SetTransformTracker(TrackerID tracker, VRMat *transform);
-	void SetTransformWorld(VRMat *transform);
-
-	// void SetTargetTracker(TrackerID tracker);
-	void SetTargetWorld();
-
-	std::function<void(TrackerID)> _GrabBeginCallback;
-	std::function<void(TrackerID)> _GrabEndCallback;
-
-	void ControllerRelease();
-	void ControllerGrab(TrackerID controller);
-
-  private:
-	glm::mat4x4 GetTransformAbsolute();
-
-	bool _initialized;
-
-	App *_app;
-	OverlayID _id;
-
-	std::string _name;
-	bool _is_held;
-	bool _hidden;
-	float _width_m;
-	float _alpha;
-	TrackerID _active_hand;
-
-	Target _target;
-};

src/panel.cpp

@@ -1,16 +1,18 @@
 #include "panel.h"
-#include "app.h"
-#include "overlay.h"
 
-Panel::Panel(App *app, int index, int x, int y, int width, int height)
+Panel::Panel(App *app, vr::HmdMatrix34_t start_pose, int index, int x, int y, int width, int height)
 	: _app(app),
 	  _index(index),
 	  _x(x),
 	  _y(y),
 	  _width(width),
 	  _height(height),
-	  _overlay(app, "screen_view_" + std::to_string(index))
+	  _grab_component(app)
 {
+	_name = "screen_view_" + std::to_string(index);
+	_alpha = 1.0f;
+	_meters = 1.0f;
+
 	glGenTextures(1, &_gl_texture);
 	glBindTexture(GL_TEXTURE_2D, _gl_texture);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
@@ -23,7 +25,20 @@ Panel::Panel(App *app, int index, int x, int y, int width, int height)
 	_texture.eType = vr::TextureType_OpenGL;
 	_texture.handle = (void *)(uintptr_t)_gl_texture;
 
-	// _overlay;
+	// create overlay
+	{
+		auto overlay_create_err = _app->vr_overlay->CreateOverlay(_name.c_str(), _name.c_str(), &_id);
+		assert(overlay_create_err == 0);
+		_app->vr_overlay->ShowOverlay(_id);
+		uint8_t col[4] = {20, 50, 50, 255};
+		_app->vr_overlay->SetOverlayRaw(_id, &col, 1, 1, 4);
+		printf("Created overlay instance %d\n", _index);
+
+		// (flipping uv on y axis because opengl and xorg are opposite)
+		vr::VRTextureBounds_t bounds{0, 1, 1, 0};
+		_app->vr_overlay->SetOverlayTextureBounds(_id, &bounds);
+		_app->vr_overlay->SetOverlayTransformAbsolute(_id, _app->_tracking_origin, &start_pose);
+	}
 }
 
 void Panel::Update()
@@ -31,12 +46,7 @@ void Panel::Update()
 	Render();
 	UpdateCursor();
 
-	_overlay.Update();
-}
-
-Overlay *Panel::GetOverlay()
-{
-	return &_overlay;
+	_grab_component.Update(_id, &_meters);
 }
 
 void Panel::Render()
@@ -48,12 +58,17 @@ void Panel::Render()
 		0, 0, 0,
 		_width, _height, 1);
 
-	_overlay.SetTexture(&_texture);
+	auto set_texture_err = _app->vr_overlay->SetOverlayTexture(_id, &_texture);
+	assert(set_texture_err == 0);
 }
 
 void Panel::SetHidden(bool state)
 {
-	_overlay.SetHidden(state);
+	_hidden = state;
+	if (state)
+		_app->vr_overlay->HideOverlay(_id);
+	else
+		_app->vr_overlay->ShowOverlay(_id);
 }
 
 void Panel::UpdateCursor()
@@ -61,7 +76,7 @@ void Panel::UpdateCursor()
 	auto global_pos = _app->GetCursorPosition();
 	if (global_pos.x < _x || global_pos.x >= _x + _width || global_pos.y < _y || global_pos.y >= _y + _height)
 	{
-		_app->vr_overlay->ClearOverlayCursorPositionOverride(_overlay.Id());
+		_app->vr_overlay->ClearOverlayCursorPositionOverride(_id);
 		return;
 	}
 	int local_x = global_pos.x - _x;
@@ -73,5 +88,5 @@ void Panel::UpdateCursor()
 	float x = local_x / (float)_width;
 	float y = 1.0f - (local_y / (float)_width + top_edge);
 	auto pos = vr::HmdVector2_t{x, y};
-	_app->vr_overlay->SetOverlayCursorPositionOverride(_overlay.Id(), &pos);
+	_app->vr_overlay->SetOverlayCursorPositionOverride(_id, &pos);
 }

src/panel.h

@@ -1,36 +1,38 @@
 #pragma once
-#include "overlay.h"
 #define GL_GLEXT_PROTOTYPES
 
+#include "grab_component.h"
 #include "util.h"
 #include <GLFW/glfw3.h>
 
-const VRMat DEFAULT_POSE = {{{1, 0, 0, 0}, {0, 1, 0, 1}, {0, 0, 1, 0}}};
+const vr::HmdMatrix34_t DEFAULT_POSE = {{{1, 0, 0, 0}, {0, 1, 0, 1}, {0, 0, 1, 0}}};
 
 class App;
-class Overlay;
 
 class Panel
 {
   public:
-	Panel(App *app, int index, int xmin, int xmax, int ymin, int ymax);
+	Panel(App *app, vr::HmdMatrix34_t start_pose, int index, int xmin, int xmax, int ymin, int ymax);
 
 	void Update();
 	void SetHidden(bool state);
 
-	Overlay *GetOverlay();
-
   private:
 	void Render();
 	void UpdateCursor();
 
 	App *_app;
+	OverlayID _id;
 	int _index;
+	std::string _name;
 
 	int _x, _y;
 	int _width, _height;
+	float _meters;
+	float _alpha;
+	bool _hidden;
 
-	Overlay _overlay;
+	GrabComponent _grab_component;
 
 	vr::Texture_t _texture;
 	GLuint _gl_texture;

src/util.h

@@ -5,9 +5,8 @@
 
 typedef vr::TrackedDeviceIndex_t TrackerID;
 typedef vr::VROverlayHandle_t OverlayID;
-typedef vr::HmdMatrix34_t VRMat;
 
-inline void PrintMat(VRMat m)
+inline void PrintMat(vr::HmdMatrix34_t m)
 {
 	printf("[%.2f, %.2f, %.2f, %.2f]\n", m.m[0][0], m.m[0][1], m.m[0][2], m.m[0][3]);
 	printf("[%.2f, %.2f, %.2f, %.2f]\n", m.m[1][0], m.m[1][1], m.m[1][2], m.m[1][3]);
@@ -22,7 +21,7 @@ inline void PrintMat(glm::mat4x4 m)
 	printf("[%.2f, %.2f, %.2f, %.2f]\n", m[3][0], m[3][1], m[3][2], m[3][3]);
 }
 
-inline glm::mat4x4 ConvertMat(VRMat mat)
+inline glm::mat4x4 ConvertMat(vr::HmdMatrix34_t mat)
 {
 	auto m = mat.m;
 	return glm::mat4x4(
@@ -32,10 +31,10 @@ inline glm::mat4x4 ConvertMat(VRMat mat)
 		m[0][3], m[1][3], m[2][3], 1);
 }
 
-inline VRMat ConvertMat(glm::mat4x4 m)
+inline vr::HmdMatrix34_t ConvertMat(glm::mat4x4 m)
 {
 	// clang-format off
-	return VRMat{{
+	return vr::HmdMatrix34_t{{
 		{m[0][0], m[1][0], m[2][0], m[3][0]},
 		{m[0][1], m[1][1], m[2][1], m[3][1]},
 		{m[0][2], m[1][2], m[2][2], m[3][2]}
@@ -48,7 +47,7 @@ inline glm::vec3 GetPos(glm::mat4x4 mat)
 	return glm::vec3(mat[3][0], mat[3][1], mat[3][2]);
 }
 
-inline glm::vec3 GetPos(VRMat mat)
+inline glm::vec3 GetPos(vr::HmdMatrix34_t mat)
 {
 	return glm::vec3(mat.m[0][3], mat.m[1][3], mat.m[2][3]);
 }