+#define EFMASK_CHEAP (EF_ADDITIVE | EF_DOUBLESIDED | EF_FULLBRIGHT | EF_NODEPTHTEST | EF_NODRAW | EF_NOSHADOW | EF_SELECTABLE | EF_TELEPORT_BIT)
+
+float autocvar_cl_viewmodel_scale;
+
+bool autocvar_cl_bobmodel;
+float autocvar_cl_bobmodel_speed;
+float autocvar_cl_bobmodel_side;
+float autocvar_cl_bobmodel_up;
+
+float autocvar_cl_followmodel;
+float autocvar_cl_followmodel_speed = 0.3;
+float autocvar_cl_followmodel_limit = 135;
+float autocvar_cl_followmodel_velocity_lowpass = 0.05;
+float autocvar_cl_followmodel_highpass = 0.05;
+float autocvar_cl_followmodel_lowpass = 0.03;
+bool autocvar_cl_followmodel_velocity_absolute;
+
+float autocvar_cl_leanmodel;
+float autocvar_cl_leanmodel_speed = 0.3;
+float autocvar_cl_leanmodel_limit = 30;
+float autocvar_cl_leanmodel_highpass1 = 0.2;
+float autocvar_cl_leanmodel_highpass = 0.2;
+float autocvar_cl_leanmodel_lowpass = 0.05;
+
+#define avg_factor(avg_time) (1 - exp(-frametime / max(0.001, avg_time)))
+#define lowpass(value, frac, ref_store, ret) MACRO_BEGIN \
+{ \
+ ret = ref_store = ref_store * (1 - frac) + (value) * frac; \
+} MACRO_END
+
+#define lowpass_limited(value, frac, limit, ref_store, ret) MACRO_BEGIN \
+{ \
+ float __ignore; lowpass(value, frac, ref_store, __ignore); \
+ ret = ref_store = bound((value) - (limit), ref_store, (value) + (limit)); \
+} MACRO_END
+
+#define highpass(value, frac, ref_store, ret) MACRO_BEGIN \
+{ \
+ float __f = 0; lowpass(value, frac, ref_store, __f); \
+ ret = (value) - __f; \
+} MACRO_END
+
+#define highpass_limited(value, frac, limit, ref_store, ret) MACRO_BEGIN \
+{ \
+ float __f = 0; lowpass_limited(value, frac, limit, ref_store, __f); \
+ ret = (value) - __f; \
+} MACRO_END
+
+#define lowpass2(value, frac, ref_store, ref_out) MACRO_BEGIN \
+{ \
+ lowpass(value.x, frac, ref_store.x, ref_out.x); \
+ lowpass(value.y, frac, ref_store.y, ref_out.y); \
+} MACRO_END
+
+#define highpass2(value, frac, ref_store, ref_out) MACRO_BEGIN \
+{ \
+ highpass(value.x, frac, ref_store.x, ref_out.x); \
+ highpass(value.y, frac, ref_store.y, ref_out.y); \
+} MACRO_END
+
+#define highpass2_limited(value, frac, limit, ref_store, ref_out) MACRO_BEGIN \
+{ \
+ highpass_limited(value.x, frac, limit, ref_store.x, ref_out.x); \
+ highpass_limited(value.y, frac, limit, ref_store.y, ref_out.y); \
+} MACRO_END
+
+#define lowpass3(value, frac, ref_store, ref_out) MACRO_BEGIN \
+{ \
+ lowpass(value.x, frac, ref_store.x, ref_out.x); \
+ lowpass(value.y, frac, ref_store.y, ref_out.y); \
+ lowpass(value.z, frac, ref_store.z, ref_out.z); \
+} MACRO_END
+
+#define highpass3(value, frac, ref_store, ref_out) MACRO_BEGIN \
+{ \
+ highpass(value.x, frac, ref_store.x, ref_out.x); \
+ highpass(value.y, frac, ref_store.y, ref_out.y); \
+ highpass(value.z, frac, ref_store.z, ref_out.z); \
+} MACRO_END
+
+void viewmodel_animate(entity this)