Fix use of unitialized variables

The second in my quest to make Godot 3.x compile with -Werror on GCC7

5 files changed, 17 insertions, 17 deletions

diff --git a/servers/physics/collision_solver_sw.cpp b/servers/physics/collision_solver_sw.cpp
index c7f66cb7fc..7bef208237 100644
--- a/servers/physics/collision_solver_sw.cpp
+++ b/servers/physics/collision_solver_sw.cpp
@@ -271,7 +271,7 @@ bool CollisionSolverSW::solve_distance_plane(const ShapeSW *p_shape_A, const Tra
 
 	bool collided = false;
 	Vector3 closest;
-	real_t closest_d;
+	real_t closest_d = 0;
 
 	for (int i = 0; i < support_count; i++) {
 
diff --git a/servers/physics/gjk_epa.cpp b/servers/physics/gjk_epa.cpp
index 6cea5b003d..0f03bd917a 100644
--- a/servers/physics/gjk_epa.cpp
+++ b/servers/physics/gjk_epa.cpp
@@ -410,8 +410,8 @@ struct	GJK
 			if(l>GJK_SIMPLEX3_EPS)
 			{
 				real_t	mindist=-1;
-				real_t	subw[2];
-				U			subm;
+				real_t	subw[2] = { 0 , 0};
+				U 		subm = 0;
 				for(U i=0;i<3;++i)
 				{
 					if(vec3_dot(*vt[i],vec3_cross(dl[i],n))>0)
@@ -458,7 +458,7 @@ struct	GJK
 			{
 				real_t	mindist=-1;
 				real_t	subw[3];
-				U			subm;
+				U		subm=0;
 				for(U i=0;i<3;++i)
 				{
 					const U			j=imd3[i];
diff --git a/servers/physics/shape_sw.cpp b/servers/physics/shape_sw.cpp
index f02ff03fcf..1845188089 100644
--- a/servers/physics/shape_sw.cpp
+++ b/servers/physics/shape_sw.cpp
@@ -734,7 +734,7 @@ Vector3 ConvexPolygonShapeSW::get_support(const Vector3 &p_normal) const {
 	Vector3 n = p_normal;
 
 	int vert_support_idx = -1;
-	real_t support_max;
+	real_t support_max = 0;
 
 	int vertex_count = mesh.vertices.size();
 	if (vertex_count == 0)
@@ -767,8 +767,8 @@ void ConvexPolygonShapeSW::get_supports(const Vector3 &p_normal, int p_max, Vect
 	int vc = mesh.vertices.size();
 
 	//find vertex first
-	real_t max;
-	int vtx;
+	real_t max = 0;
+	int vtx = 0;
 
 	for (int i = 0; i < vc; i++) {
 
@@ -1000,7 +1000,7 @@ void FaceShapeSW::project_range(const Vector3 &p_normal, const Transform &p_tran
 Vector3 FaceShapeSW::get_support(const Vector3 &p_normal) const {
 
 	int vert_support_idx = -1;
-	real_t support_max;
+	real_t support_max = 0;
 
 	for (int i = 0; i < 3; i++) {
 
@@ -1154,7 +1154,7 @@ Vector3 ConcavePolygonShapeSW::get_support(const Vector3 &p_normal) const {
 	Vector3 n = p_normal;
 
 	int vert_support_idx = -1;
-	real_t support_max;
+	real_t support_max = 0;
 
 	for (int i = 0; i < count; i++) {
 
diff --git a/servers/visual/shader_language.cpp b/servers/visual/shader_language.cpp
index 09f8a3775e..c7b537c8ea 100644
--- a/servers/visual/shader_language.cpp
+++ b/servers/visual/shader_language.cpp
@@ -2586,7 +2586,7 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
 				}
 
 				bool index_valid = false;
-				DataType member_type;
+				DataType member_type = TYPE_VOID;
 
 				switch (expr->get_datatype()) {
 					case TYPE_BVEC2:
diff --git a/servers/visual/visual_server_scene.cpp b/servers/visual/visual_server_scene.cpp
index 61ebc6e6de..0d70b7fc0e 100644
--- a/servers/visual/visual_server_scene.cpp
+++ b/servers/visual/visual_server_scene.cpp
@@ -948,13 +948,13 @@ void VisualServerScene::_light_instance_update_shadow(Instance *p_instance, cons
 				Vector3 z_vec = transform.basis.get_axis(Vector3::AXIS_Z).normalized();
 				//z_vec points agsint the camera, like in default opengl
 
-				float x_min, x_max;
-				float y_min, y_max;
-				float z_min, z_max;
+				float x_min = 0.f, x_max = 0.f;
+				float y_min = 0.f, y_max = 0.f;
+				float z_min = 0.f, z_max = 0.f;
 
-				float x_min_cam, x_max_cam;
-				float y_min_cam, y_max_cam;
-				float z_min_cam, z_max_cam;
+				float x_min_cam = 0.f, x_max_cam = 0.f;
+				float y_min_cam = 0.f, y_max_cam = 0.f;
+				float z_min_cam = 0.f, z_max_cam = 0.f;
 
 				float bias_scale = 1.0;
 
@@ -1503,7 +1503,7 @@ void VisualServerScene::_render_scene(const Transform p_cam_transform, const Cam
 
 			InstanceLightData *light = static_cast<InstanceLightData *>(ins->base_data);
 
-			float coverage;
+			float coverage = 0.f;
 
 			{ //compute coverage