From 860b7d37562b1e61385ea2f92e36ffda457bdb35 Mon Sep 17 00:00:00 2001
From: XProger <xproger@list.ru>
Date: Tue, 27 Aug 2019 01:50:28 +0300
Subject: [PATCH] fix shadow for split-screen mode, minor fixes

---
 src/lara.h                |  2 +-
 src/level.h               | 11 +++++++++--
 src/platform/win/main.cpp |  4 +++-
 src/utils.h               |  4 ++--
 4 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/src/lara.h b/src/lara.h
index 91f89be..cf3b70e 100644
--- a/src/lara.h
+++ b/src/lara.h
@@ -1422,7 +1422,7 @@ struct Lara : Character {
 
         // flip left and right by relative target direction
             if (count > 1) {
-                int side[2] = { 0, 0 };
+                float side[2] = { 0, 0 };
                 vec3 dir = getDir();
                 dir.y = 0.0f;
 
diff --git a/src/level.h b/src/level.h
index a486659..d06e51f 100644
--- a/src/level.h
+++ b/src/level.h
@@ -80,6 +80,8 @@ struct Level : IGame {
     vec4 underwaterFogParams;
     vec4 levelFogParams;
 
+    mat4 mLightProj[2];
+
 // IGame implementation ========
     virtual void loadLevel(TR::LevelID id) {
         sndWater = sndTrack = NULL;
@@ -2538,7 +2540,8 @@ struct Level : IGame {
         Core::mView    = Core::mViewInv.inverseOrtho();
         Core::mProj    = GAPI::perspective(90.0f, 1.0f, znear, zfar, 0.0f);
 
-        Core::mLightProj = Core::mProj * Core::mView;
+        mat4 &m = mLightProj[player->camera->cameraIndex];
+        m = Core::mProj * Core::mView;
 
         mat4 bias;
         bias.identity();
@@ -2546,7 +2549,9 @@ struct Level : IGame {
     #if defined(_GAPI_D3D9) || defined(_GAPI_GXM)
         bias.e11 = -bias.e11;
     #endif
-        Core::mLightProj = bias * Core::mLightProj;
+        m = bias * m;
+
+        Core::mLightProj = m;
 
         camera->frustum->pos = Core::viewPos.xyz();
         camera->frustum->calcPlanes(Core::mViewProj);
@@ -3033,6 +3038,8 @@ struct Level : IGame {
                 player = players[view];
                 camera = player->camera;
 
+                Core::mLightProj = mLightProj[view];
+
                 Core::pass = Core::passCompose;
 
                 setDefaultTarget(eye, view, invBG);
diff --git a/src/platform/win/main.cpp b/src/platform/win/main.cpp
index c33b292..5469ef9 100644
--- a/src/platform/win/main.cpp
+++ b/src/platform/win/main.cpp
@@ -661,7 +661,9 @@ static LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lPara
 }
 
 //VR Support
-#define VR_SUPPORT
+#ifdef _GAPI_GL
+    #define VR_SUPPORT
+#endif
 
 #ifdef VR_SUPPORT
 // TODO: fix depth precision
diff --git a/src/utils.h b/src/utils.h
index 65cfe04..2533729 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -129,8 +129,8 @@ inline const T& clamp(const T &x, const T &a, const T &b) {
 }
 
 template <class T>
-inline const int sign(const T &x) {
-    return x > 0 ? 1 : (x < 0 ? -1 : 0);
+inline const T sign(const T &x) {
+    return (T)(x > 0 ? 1 : (x < 0 ? -1 : 0));
 }
 
 template <class T>