do not scale matrices down to 0 (thx v2v3v4)

Author: yohjimane

src/Layers/xrRender/FTreeVisual.cpp

@@ -85,7 +85,7 @@ struct FTreeVisual_setup
     Fvector4 wave;
     Fvector4 wind;
 
-    FTreeVisual_setup(): dwFrame(0), scale(0) {}
+    FTreeVisual_setup(): dwFrame(0), scale(M_MIN_SCALE) {}
 
     void calculate()
     {

src/Layers/xrRender/SkeletonCustom.cpp

@@ -497,7 +497,7 @@ void CKinematics::LL_SetBoneVisible(u16 bone_id, BOOL val, BOOL bRecursive)
 	visimask.set(mask, val);
 	if (!visimask.is(mask))
 	{
-		bone_instances[bone_id].mTransform.scale(0.f, 0.f, 0.f);
+		bone_instances[bone_id].mTransform.scale(M_MIN_SCALE, M_MIN_SCALE, M_MIN_SCALE);
 		if (LL_GetData(bone_id).GetParentID() < LL_BoneCount() && LL_GetData(bone_id).GetParentID() != BI_NONE)
 			bone_instances[bone_id].mTransform.c = LL_GetBoneInstance(LL_GetData(bone_id).GetParentID()).mTransform.c;
 	}
@@ -530,7 +530,7 @@ void CKinematics::LL_SetBonesVisible(u64 mask)
         {
             Fmatrix& A = bone_instances[b].mTransform;
             Fmatrix& B = bone_instances[b].mRenderTransform;
-            A.scale(0.f, 0.f, 0.f);
+            A.scale(M_MIN_SCALE, M_MIN_SCALE, M_MIN_SCALE);
             B.mul_43(A, (*bones)[b]->m2b_transform);
         }
     }

src/xrCore/_matrix.h

@@ -539,4 +539,6 @@ bool _valid(const _matrix<T>& m)
 extern XRCORE_API Fmatrix Fidentity;
 extern XRCORE_API Dmatrix Didentity;
 
+constexpr float M_MIN_SCALE = 0.01f;
+
 #endif

src/xrGame/ai_obstacle.cpp

@@ -98,7 +98,7 @@ void ai_obstacle::compute_matrix(Fmatrix& result, const Fvector& additional)
     u16 visible_bone_count = kinematics->LL_VisibleBoneCount();
     if (!visible_bone_count)
     {
-        result.scale(0.f, 0.f, 0.f);
+        result.scale(M_MIN_SCALE, M_MIN_SCALE, M_MIN_SCALE);
         return;
     }