getDisplayDimensions: Use unsigned ints;

Fixes a warning.

src/api/headset.c

@@ -115,24 +115,24 @@ static int l_lovrHeadsetSetMirrored(lua_State* L) {
 }
 
 static int l_lovrHeadsetGetDisplayWidth(lua_State* L) {
-  int width, height;
+  uint32_t width, height;
   lovrHeadsetDriver->getDisplayDimensions(&width, &height);
-  lua_pushnumber(L, width);
+  lua_pushinteger(L, width);
   return 1;
 }
 
 static int l_lovrHeadsetGetDisplayHeight(lua_State* L) {
-  int width, height;
+  uint32_t width, height;
   lovrHeadsetDriver->getDisplayDimensions(&width, &height);
-  lua_pushnumber(L, height);
+  lua_pushinteger(L, height);
   return 1;
 }
 
 static int l_lovrHeadsetGetDisplayDimensions(lua_State* L) {
-  int width, height;
+  uint32_t width, height;
   lovrHeadsetDriver->getDisplayDimensions(&width, &height);
-  lua_pushnumber(L, width);
-  lua_pushnumber(L, height);
+  lua_pushinteger(L, width);
+  lua_pushinteger(L, height);
   return 2;
 }
 

src/headset/fake.c

@@ -113,11 +113,14 @@ static void fakeSetMirrored(bool mirror, HeadsetEye eye) {
   state.mirrorEye = eye;
 }
 
-static void fakeGetDisplayDimensions(int* width, int* height) {
+static void fakeGetDisplayDimensions(uint32_t* width, uint32_t* height) {
   updateWindow();
 
   if (state.window) {
-    glfwGetFramebufferSize(state.window, width, height);
+    int w, h;
+    glfwGetFramebufferSize(state.window, &w, &h);
+    *width = (uint32_t) w;
+    *height = (uint32_t) h;
   }
 }
 
@@ -215,7 +218,7 @@ static void fakeRenderTo(void (*callback)(void*), void* userdata) {
     return;
   }
 
-  int width, height;
+  uint32_t width, height;
   fakeGetDisplayDimensions(&width, &height);
   bool stereo = state.mirrorEye == EYE_BOTH;
   Camera camera = { .canvas = NULL, .viewMatrix = { MAT4_IDENTITY }, .stereo = stereo };

src/headset/headset.h

@@ -73,7 +73,7 @@ typedef struct {
   bool (*isMounted)();
   void (*isMirrored)(bool* mirrored, HeadsetEye* eye);
   void (*setMirrored)(bool mirror, HeadsetEye eye);
-  void (*getDisplayDimensions)(int* width, int* height);
+  void (*getDisplayDimensions)(uint32_t* width, uint32_t* height);
   void (*getClipDistance)(float* clipNear, float* clipFar);
   void (*setClipDistance)(float clipNear, float clipFar);
   void (*getBoundsDimensions)(float* width, float* depth);

src/headset/oculus.c

@@ -171,7 +171,7 @@ static void oculusSetMirrored(bool mirror, HeadsetEye eye) {
   state.mirrorEye = eye;
 }
 
-static void oculusGetDisplayDimensions(int* width, int* height) {
+static void oculusGetDisplayDimensions(uint32_t* width, uint32_t* height) {
   ovrHmdDesc desc = ovr_GetHmdDesc(state.session);
   ovrSizei size = ovr_GetFovTextureSize(state.session, ovrEye_Left, desc.DefaultEyeFov[0], 1.0f);
 

src/headset/openvr.c

@@ -295,7 +295,7 @@ static void openvrSetMirrored(bool mirror, HeadsetEye eye) {
   state.mirrorEye = eye;
 }
 
-static void openvrGetDisplayDimensions(int* width, int* height) {
+static void openvrGetDisplayDimensions(uint32_t* width, uint32_t* height) {
   state.system->GetRecommendedRenderTargetSize(width, height);
 }
 

src/headset/webvr.c

@@ -12,7 +12,7 @@ extern HeadsetOrigin webvrGetOriginType(void);
 extern bool webvrIsMounted(void);
 extern bool webvrIsMirrored(void);
 extern void webvrSetMirrored(bool mirror);
-extern void webvrGetDisplayDimensions(int32_t* width, int32_t* height);
+extern void webvrGetDisplayDimensions(uint32_t* width, uint32_t* height);
 extern void webvrGetClipDistance(float* near, float* far);
 extern void webvrSetClipDistance(float near, float far);
 extern void webvrGetBoundsDimensions(float* width, float* depth);

src/math/mat4.c

@@ -297,7 +297,7 @@ mat4 mat4_orthographic(mat4 m, float left, float right, float top, float bottom,
   float rl = right - left;
   float tb = top - bottom;
   float fn = clipFar - clipNear;
-  mat4_identity(m);
+  memset(m, 0, 16 * sizeof(float));
   m[0] = 2 / rl;
   m[5] = 2 / tb;
   m[10] = -2 / fn;
@@ -314,7 +314,7 @@ mat4 mat4_perspective(mat4 m, float clipNear, float clipFar, float fovy, float a
   float sy = clipNear / range;
   float sz = -(clipFar + clipNear) / (clipFar - clipNear);
   float pz = (-2.0f * clipFar * clipNear) / (clipFar - clipNear);
-  mat4_identity(m);
+  memset(m, 0, 16 * sizeof(float));
   m[0] = sx;
   m[5] = sy;
   m[10] = sz;

src/resources/lovr.js

@@ -152,8 +152,8 @@ var LibraryLOVR = {
   },
 
   webvrGetDisplayDimensions: function(width, height) {
-    HEAP32[width >> 2] = webvr.width;
-    HEAP32[height >> 2] = webvr.height;
+    HEAPU32[width >> 2] = webvr.width;
+    HEAPU32[height >> 2] = webvr.height;
   },
 
   webvrGetClipDistance: function(clipNear, clipFar) {