diff --git a/packages/ludic.render3d/shaders/grass.mesh b/packages/ludic.render3d/shaders/grass.mesh
index 6f2c6305..38c1ea7a 100644
--- a/packages/ludic.render3d/shaders/grass.mesh
+++ b/packages/ludic.render3d/shaders/grass.mesh
@@ -19,11 +19,91 @@ uniform float u_time;
 uniform sampler2D u_ts_height;
 // the baked terrain normal: x and z in RG16F, y rebuilt (a terrain normal always points up)
 uniform sampler2D u_ter_normal;
-vec3 terNormal(vec2 uv) { vec2 xz = textureLod(u_ter_normal, uv, 0.0).rg;  return vec3(xz.x, sqrt(max(1.0 - dot(xz, xz), 0.0)), xz.y); }
 uniform vec2 u_ts_origin;
 uniform float u_ts_half;
 uniform sampler2D u_ortho;
 uniform float u_ortho_on;
+// terpage.glsl, pasted (the reference copy and its rules are there)
+// ---- the page table ----------------------------------------------------------------------
+#ifndef TP_HELPERS
+#define TP_HELPERS
+uniform sampler2D u_tp_page;   // R32F, a texel a tile: slot + 1, 0 = not resident
+uniform float u_tp_on;         // 1 while paging; 0 reads the whole maps exactly as before
+uniform vec4 u_tp_dims;        // tiles a side, height texels a tile, photo texels a tile, full height res
+// the layer holding a full-map uv, or -1: paging off, off the map, or not resident
+float tpSlot(vec2 uv) {
+  if (u_tp_on < 0.5 || uv.x < 0.0 || uv.y < 0.0 || uv.x >= 1.0 || uv.y >= 1.0) return -1.0;
+  ivec2 t = min(ivec2(floor(uv * u_tp_dims.x)), ivec2(int(u_tp_dims.x) - 1));
+  return texelFetch(u_tp_page, t, 0).r - 1.0;
+}
+// a full-map uv inside its tile's layer of k texels a side, past the one-texel border
+vec2 tpUV(vec2 uv, float k) { return (1.0 + fract(uv * u_tp_dims.x) * k) / (k + 2.0); }
+#endif
+// ---- height (vertex and mesh stages) -----------------------------------------------------
+#ifndef TP_HEIGHT
+#define TP_HEIGHT
+#ifndef TP_HMAP
+#define TP_HMAP u_ts_height
+#endif
+uniform sampler2DArray u_tp_h;
+// bilinear height, fine where a tile is resident. Outside a fragment stage texture() IS level 0
+// (glslang emits the same explicit-lod sample), so this is the old read bit for bit.
+float terHeight(vec2 uv) {
+  float s = tpSlot(uv);
+  if (s >= 0.0) return textureLod(u_tp_h, vec3(tpUV(uv, u_tp_dims.y), s), 0.0).r;
+  return textureLod(TP_HMAP, uv, 0.0).r;
+}
+// The B-spline through four bilinear taps (heightSmooth). Paging on, the texel is the FULL
+// map's - the coarse map's own size would halve the surface's detail - and each tap finds its
+// own tile, so a patch straddling two tiles, or a tile and the coarse map, stays one surface.
+float terHeightSmooth(vec2 uv) {
+  vec2 res = u_tp_on > 0.5 ? vec2(u_tp_dims.w) : vec2(textureSize(TP_HMAP, 0));
+  vec2 t = uv * res - 0.5;
+  vec2 f = fract(t);
+  vec2 i = floor(t);
+  vec2 w0 = (1.0 - f) * (1.0 - f) * (1.0 - f) / 6.0;
+  vec2 w1 = (4.0 - 6.0 * f * f + 3.0 * f * f * f) / 6.0;
+  vec2 w3 = f * f * f / 6.0;
+  vec2 w2 = 1.0 - w0 - w1 - w3;
+  vec2 s0 = w0 + w1, s1 = w2 + w3;
+  vec2 o0 = (i - 1.0 + w1 / s0 + 0.5) / res;
+  vec2 o1 = (i + 1.0 + w3 / s1 + 0.5) / res;
+  return (terHeight(vec2(o0.x, o0.y)) * s0.x + terHeight(vec2(o1.x, o0.y)) * s1.x) * s0.y
+       + (terHeight(vec2(o0.x, o1.y)) * s0.x + terHeight(vec2(o1.x, o1.y)) * s1.x) * s1.y;
+}
+#endif
+// ---- the baked normal (x, z; y is rebuilt by the caller) ----------------------------------
+#ifndef TP_NORMAL
+#define TP_NORMAL
+uniform sampler2DArray u_tp_nrm;
+vec2 terNormalXZ(vec2 uv) {
+#ifdef TP_FRAGMENT
+  if (u_tp_on < 0.5) return texture(u_ter_normal, uv).rg;
+  // taken before the per-pixel branch: a neighbour on another tile must not decide the level
+  vec2 dx = dFdx(uv), dy = dFdy(uv);
+#endif
+  float s = tpSlot(uv);
+  if (s >= 0.0) return textureLod(u_tp_nrm, vec3(tpUV(uv, u_tp_dims.y), s), 0.0).rg;
+#ifdef TP_FRAGMENT
+  return textureGrad(u_ter_normal, uv, dx, dy).rg;
+#else
+  return textureLod(u_ter_normal, uv, 0.0).rg;
+#endif
+}
+#endif
+// ---- the photograph's measures (declares no sampler: a stage reading u_ortho blurred needs no tile)
+#ifndef TP_ORTHO_LOD
+#define TP_ORTHO_LOD
+// the FULL photograph's texels a side, for filters that weigh by the texel (orthoSmooth)
+vec2 tpOrthoRes() { return u_tp_on > 0.5 ? vec2(u_tp_dims.z * u_tp_dims.x) : vec2(textureSize(u_ortho, 0)); }
+// A blurred read (textureLod 1..2.5) names a level of the FULL photograph; on the coarse map
+// the same detail is that many levels lower, so the ground's far colour does not soften.
+float tpOrthoLod(float lod) {
+  if (u_tp_on < 0.5) return lod;
+  return max(lod - log2(u_tp_dims.z * u_tp_dims.x / float(textureSize(u_ortho, 0).x)), 0.0);
+}
+#endif
+vec3 terNormal(vec2 uv) { vec2 xz = terNormalXZ(uv);  return vec3(xz.x, sqrt(max(1.0 - dot(xz, xz), 0.0)), xz.y); }
 uniform float u_lake_level;
 uniform float u_sea_level;
 uniform vec4 u_lake;
@@ -51,22 +131,6 @@ float bladeHash(ivec2 cell, int j, int k) {
   uint h = pcg(uint(cell.x + 32768) * 73856093u ^ uint(cell.y + 32768) * 19349663u ^ uint(j) * 83492791u ^ uint(k) * 2654435761u);
   return float(h) * (1.0 / 4294967295.0);
 }
-// no implicit level of detail outside a fragment shader: every lookup names level 0
-float heightSmooth(sampler2D tex, vec2 uv) {
-  vec2 res = vec2(textureSize(tex, 0));
-  vec2 t = uv * res - 0.5;
-  vec2 f = fract(t);
-  vec2 i = floor(t);
-  vec2 w0 = (1.0 - f) * (1.0 - f) * (1.0 - f) / 6.0;
-  vec2 w1 = (4.0 - 6.0 * f * f + 3.0 * f * f * f) / 6.0;
-  vec2 w3 = f * f * f / 6.0;
-  vec2 w2 = 1.0 - w0 - w1 - w3;
-  vec2 s0 = w0 + w1, s1 = w2 + w3;
-  vec2 o0 = (i - 1.0 + w1 / s0 + 0.5) / res;
-  vec2 o1 = (i + 1.0 + w3 / s1 + 0.5) / res;
-  return (textureLod(tex, vec2(o0.x, o0.y), 0.0).r * s0.x + textureLod(tex, vec2(o1.x, o0.y), 0.0).r * s1.x) * s0.y
-       + (textureLod(tex, vec2(o0.x, o1.y), 0.0).r * s0.x + textureLod(tex, vec2(o1.x, o1.y), 0.0).r * s1.x) * s1.y;
-}
 
 void main() {
   int ti = int(gl_WorkGroupID.y);
@@ -95,7 +159,7 @@ void main() {
     float life = 1.0 - smoothstep(0.8, 1.0, fj / max(count, 1.0));
     vec2 huv = (xz - u_ts_origin) / (2.0 * u_ts_half) + 0.5;
     if (huv.x < 0.0 || huv.x > 1.0 || huv.y < 0.0 || huv.y > 1.0) continue;
-    vec4 ht = textureLod(u_ts_height, huv, 0.0);
+    vec4 ht = vec4(terHeight(huv));   // only .r is read
     vec4 croot = u_vp * vec4(xz.x, ht.r, xz.y, 1.0);
     if (croot.w < -1.0 || abs(croot.x) > croot.w * 1.25 + 1.5 || abs(croot.y) > croot.w * 1.4 + 1.5) continue;
     vec3 gn = terNormal(huv);
@@ -104,12 +168,12 @@ void main() {
     if (u_lake.z > 0.0) { vec2 q = (xz - u_lake.xy) / u_lake.zw;  if (dot(q, q) < 1.0) wl = max(wl, u_lake_level); }
     float ok = (1.0 - smoothstep(0.30, 0.55, 1.0 - gn.y)) * smoothstep(0.0, 0.6, ht.r - wl - 0.15) * smoothstep(u_snow_line - 80.0, u_snow_line - 200.0, ht.r);
     if (u_ortho_on > 0.5) {
-      vec3 oc = textureLod(u_ortho, huv, 1.5).rgb;
+      vec3 oc = textureLod(u_ortho, huv, tpOrthoLod(1.5)).rgb;
       ok *= 0.25 + 0.75 * smoothstep(0.0, 0.02, oc.g - max(oc.r, oc.b));
     }
     if (h4 > ok) continue;
     bool far = dist > 300.0;
-    float h = far ? ht.r : heightSmooth(u_ts_height, huv);
+    float h = far ? ht.r : terHeightSmooth(huv);
     if (far) h += 0.03;
     if ((u_dbg & 1) != 0) h += 0.3;
     float seed = hv.x * 0.7 + hv.y * 0.3;
diff --git a/packages/ludic.render3d/shaders/grass.vert b/packages/ludic.render3d/shaders/grass.vert
index e434b24b..e3afa1c5 100644
--- a/packages/ludic.render3d/shaders/grass.vert
+++ b/packages/ludic.render3d/shaders/grass.vert
@@ -17,11 +17,91 @@ uniform float u_time;
 uniform sampler2D u_ts_height;
 // the baked terrain normal: x and z in RG16F, y rebuilt (a terrain normal always points up)
 uniform sampler2D u_ter_normal;
-vec3 terNormal(vec2 uv) { vec2 xz = textureLod(u_ter_normal, uv, 0.0).rg;  return vec3(xz.x, sqrt(max(1.0 - dot(xz, xz), 0.0)), xz.y); }
 uniform vec2 u_ts_origin;
 uniform float u_ts_half;
 uniform sampler2D u_ortho;
 uniform float u_ortho_on;
+// terpage.glsl, pasted (the reference copy and its rules are there)
+// ---- the page table ----------------------------------------------------------------------
+#ifndef TP_HELPERS
+#define TP_HELPERS
+uniform sampler2D u_tp_page;   // R32F, a texel a tile: slot + 1, 0 = not resident
+uniform float u_tp_on;         // 1 while paging; 0 reads the whole maps exactly as before
+uniform vec4 u_tp_dims;        // tiles a side, height texels a tile, photo texels a tile, full height res
+// the layer holding a full-map uv, or -1: paging off, off the map, or not resident
+float tpSlot(vec2 uv) {
+  if (u_tp_on < 0.5 || uv.x < 0.0 || uv.y < 0.0 || uv.x >= 1.0 || uv.y >= 1.0) return -1.0;
+  ivec2 t = min(ivec2(floor(uv * u_tp_dims.x)), ivec2(int(u_tp_dims.x) - 1));
+  return texelFetch(u_tp_page, t, 0).r - 1.0;
+}
+// a full-map uv inside its tile's layer of k texels a side, past the one-texel border
+vec2 tpUV(vec2 uv, float k) { return (1.0 + fract(uv * u_tp_dims.x) * k) / (k + 2.0); }
+#endif
+// ---- height (vertex and mesh stages) -----------------------------------------------------
+#ifndef TP_HEIGHT
+#define TP_HEIGHT
+#ifndef TP_HMAP
+#define TP_HMAP u_ts_height
+#endif
+uniform sampler2DArray u_tp_h;
+// bilinear height, fine where a tile is resident. Outside a fragment stage texture() IS level 0
+// (glslang emits the same explicit-lod sample), so this is the old read bit for bit.
+float terHeight(vec2 uv) {
+  float s = tpSlot(uv);
+  if (s >= 0.0) return textureLod(u_tp_h, vec3(tpUV(uv, u_tp_dims.y), s), 0.0).r;
+  return textureLod(TP_HMAP, uv, 0.0).r;
+}
+// The B-spline through four bilinear taps (heightSmooth). Paging on, the texel is the FULL
+// map's - the coarse map's own size would halve the surface's detail - and each tap finds its
+// own tile, so a patch straddling two tiles, or a tile and the coarse map, stays one surface.
+float terHeightSmooth(vec2 uv) {
+  vec2 res = u_tp_on > 0.5 ? vec2(u_tp_dims.w) : vec2(textureSize(TP_HMAP, 0));
+  vec2 t = uv * res - 0.5;
+  vec2 f = fract(t);
+  vec2 i = floor(t);
+  vec2 w0 = (1.0 - f) * (1.0 - f) * (1.0 - f) / 6.0;
+  vec2 w1 = (4.0 - 6.0 * f * f + 3.0 * f * f * f) / 6.0;
+  vec2 w3 = f * f * f / 6.0;
+  vec2 w2 = 1.0 - w0 - w1 - w3;
+  vec2 s0 = w0 + w1, s1 = w2 + w3;
+  vec2 o0 = (i - 1.0 + w1 / s0 + 0.5) / res;
+  vec2 o1 = (i + 1.0 + w3 / s1 + 0.5) / res;
+  return (terHeight(vec2(o0.x, o0.y)) * s0.x + terHeight(vec2(o1.x, o0.y)) * s1.x) * s0.y
+       + (terHeight(vec2(o0.x, o1.y)) * s0.x + terHeight(vec2(o1.x, o1.y)) * s1.x) * s1.y;
+}
+#endif
+// ---- the baked normal (x, z; y is rebuilt by the caller) ----------------------------------
+#ifndef TP_NORMAL
+#define TP_NORMAL
+uniform sampler2DArray u_tp_nrm;
+vec2 terNormalXZ(vec2 uv) {
+#ifdef TP_FRAGMENT
+  if (u_tp_on < 0.5) return texture(u_ter_normal, uv).rg;
+  // taken before the per-pixel branch: a neighbour on another tile must not decide the level
+  vec2 dx = dFdx(uv), dy = dFdy(uv);
+#endif
+  float s = tpSlot(uv);
+  if (s >= 0.0) return textureLod(u_tp_nrm, vec3(tpUV(uv, u_tp_dims.y), s), 0.0).rg;
+#ifdef TP_FRAGMENT
+  return textureGrad(u_ter_normal, uv, dx, dy).rg;
+#else
+  return textureLod(u_ter_normal, uv, 0.0).rg;
+#endif
+}
+#endif
+// ---- the photograph's measures (declares no sampler: a stage reading u_ortho blurred needs no tile)
+#ifndef TP_ORTHO_LOD
+#define TP_ORTHO_LOD
+// the FULL photograph's texels a side, for filters that weigh by the texel (orthoSmooth)
+vec2 tpOrthoRes() { return u_tp_on > 0.5 ? vec2(u_tp_dims.z * u_tp_dims.x) : vec2(textureSize(u_ortho, 0)); }
+// A blurred read (textureLod 1..2.5) names a level of the FULL photograph; on the coarse map
+// the same detail is that many levels lower, so the ground's far colour does not soften.
+float tpOrthoLod(float lod) {
+  if (u_tp_on < 0.5) return lod;
+  return max(lod - log2(u_tp_dims.z * u_tp_dims.x / float(textureSize(u_ortho, 0).x)), 0.0);
+}
+#endif
+vec3 terNormal(vec2 uv) { vec2 xz = terNormalXZ(uv);  return vec3(xz.x, sqrt(max(1.0 - dot(xz, xz), 0.0)), xz.y); }
 uniform float u_lake_level;
 uniform float u_sea_level;    // the sea (terrain_sea); the lake's level when there is no separate sea
 uniform vec4 u_lake;          // the carved lake: centre x/z, half extents (z = 0: none)
@@ -58,21 +138,6 @@ float bladeHash(ivec2 cell, int j, int k) {
   uint h = pcg(uint(cell.x + 32768) * 73856093u ^ uint(cell.y + 32768) * 19349663u ^ uint(j) * 83492791u ^ uint(k) * 2654435761u);
   return float(h) * (1.0 / 4294967295.0);
 }
-float heightSmooth(sampler2D tex, vec2 uv) {
-  vec2 res = vec2(textureSize(tex, 0));
-  vec2 t = uv * res - 0.5;
-  vec2 f = fract(t);
-  vec2 i = floor(t);
-  vec2 w0 = (1.0 - f) * (1.0 - f) * (1.0 - f) / 6.0;
-  vec2 w1 = (4.0 - 6.0 * f * f + 3.0 * f * f * f) / 6.0;
-  vec2 w3 = f * f * f / 6.0;
-  vec2 w2 = 1.0 - w0 - w1 - w3;
-  vec2 s0 = w0 + w1, s1 = w2 + w3;
-  vec2 o0 = (i - 1.0 + w1 / s0 + 0.5) / res;
-  vec2 o1 = (i + 1.0 + w3 / s1 + 0.5) / res;
-  return (texture(tex, vec2(o0.x, o0.y)).r * s0.x + texture(tex, vec2(o1.x, o0.y)).r * s1.x) * s0.y
-       + (texture(tex, vec2(o0.x, o1.y)).r * s0.x + texture(tex, vec2(o1.x, o1.y)).r * s1.x) * s1.y;
-}
 void cull() { gl_Position = vec4(0.0, 0.0, 2.0, 1.0); v_wpos = vec3(0.0); v_nrm = vec3(0.0, 1.0, 0.0); v_uv = vec2(0.0); v_seed = 0.0; v_rot = vec2(0.0, 1.0); v_hull = 1.0; v_quake = 0.0; v_tint = vec3(1.0); }
 // lighting.glsl's regionTint(wpos, 0.35) times model.frag's patchiness, at the root: three fbm
 // fields a blade pixel used to pay for, when the whole blade stands on one spot
@@ -133,7 +198,7 @@ void main() {
   // the ground under it
   vec2 huv = (xz - u_ts_origin) / (2.0 * u_ts_half) + 0.5;
   if (huv.x < 0.0 || huv.x > 1.0 || huv.y < 0.0 || huv.y > 1.0) { cull(); return; }
-  vec4 ht = texture(u_ts_height, huv);
+  vec4 ht = vec4(terHeight(huv));   // only .r is read
   vec4 croot = u_vp * vec4(xz.x, ht.r, xz.y, 1.0);
   if (croot.w < -1.0 || abs(croot.x) > croot.w * 1.25 + 1.5 || abs(croot.y) > croot.w * 1.4 + 1.5) { cull(); return; }
   vec3 gn = terNormal(huv);
@@ -144,7 +209,7 @@ void main() {
   if (u_lake.z > 0.0) { vec2 q = (xz - u_lake.xy) / u_lake.zw;  if (dot(q, q) < 1.0) wl = max(wl, u_lake_level); }
   float ok = (1.0 - smoothstep(0.30, 0.55, 1.0 - gn.y)) * smoothstep(0.0, 0.6, ht.r - wl - 0.15) * smoothstep(u_snow_line - 80.0, u_snow_line - 200.0, ht.r);
   if (u_ortho_on > 0.5) {
-    vec3 oc = textureLod(u_ortho, huv, 1.5).rgb;
+    vec3 oc = textureLod(u_ortho, huv, tpOrthoLod(1.5)).rgb;
     // Is this ground vegetated, by the photograph? The test used to be green DOMINANCE -
     // g - max(r, b) - which is a test for lush green and nothing else. A dry alpine meadow
     // is yellow-green: its red is as high as its green, so the whole meadow scored zero and
@@ -159,7 +224,7 @@ void main() {
   // the root on the drawn surface: the CDLOD mesh follows the B-spline to within
   // centimetres near the camera, so the smooth sample is the drawn height
   bool far = dist > 300.0;
-  float h = far ? ht.r : heightSmooth(u_ts_height, huv);
+  float h = far ? ht.r : terHeightSmooth(huv);
   if (far) h += 0.03;
   if ((u_dbg & 1) != 0) h += 0.3;
   // the blade: sized so that coverage stays level as the spacing grows
diff --git a/packages/ludic.render3d/shaders/model.vert b/packages/ludic.render3d/shaders/model.vert
index 248164e5..946abd6b 100644
--- a/packages/ludic.render3d/shaders/model.vert
+++ b/packages/ludic.render3d/shaders/model.vert
@@ -24,8 +24,41 @@ uniform float u_ground;
 uniform sampler2D u_ts_height;
 uniform vec2 u_ts_origin;
 uniform float u_ts_half;
-float heightSmooth(sampler2D tex, vec2 uv) {
-  vec2 res = vec2(textureSize(tex, 0));
+// terpage.glsl, pasted (the reference copy and its rules are there)
+// ---- the page table ----------------------------------------------------------------------
+#ifndef TP_HELPERS
+#define TP_HELPERS
+uniform sampler2D u_tp_page;   // R32F, a texel a tile: slot + 1, 0 = not resident
+uniform float u_tp_on;         // 1 while paging; 0 reads the whole maps exactly as before
+uniform vec4 u_tp_dims;        // tiles a side, height texels a tile, photo texels a tile, full height res
+// the layer holding a full-map uv, or -1: paging off, off the map, or not resident
+float tpSlot(vec2 uv) {
+  if (u_tp_on < 0.5 || uv.x < 0.0 || uv.y < 0.0 || uv.x >= 1.0 || uv.y >= 1.0) return -1.0;
+  ivec2 t = min(ivec2(floor(uv * u_tp_dims.x)), ivec2(int(u_tp_dims.x) - 1));
+  return texelFetch(u_tp_page, t, 0).r - 1.0;
+}
+// a full-map uv inside its tile's layer of k texels a side, past the one-texel border
+vec2 tpUV(vec2 uv, float k) { return (1.0 + fract(uv * u_tp_dims.x) * k) / (k + 2.0); }
+#endif
+// ---- height (vertex and mesh stages) -----------------------------------------------------
+#ifndef TP_HEIGHT
+#define TP_HEIGHT
+#ifndef TP_HMAP
+#define TP_HMAP u_ts_height
+#endif
+uniform sampler2DArray u_tp_h;
+// bilinear height, fine where a tile is resident. Outside a fragment stage texture() IS level 0
+// (glslang emits the same explicit-lod sample), so this is the old read bit for bit.
+float terHeight(vec2 uv) {
+  float s = tpSlot(uv);
+  if (s >= 0.0) return textureLod(u_tp_h, vec3(tpUV(uv, u_tp_dims.y), s), 0.0).r;
+  return textureLod(TP_HMAP, uv, 0.0).r;
+}
+// The B-spline through four bilinear taps (heightSmooth). Paging on, the texel is the FULL
+// map's - the coarse map's own size would halve the surface's detail - and each tap finds its
+// own tile, so a patch straddling two tiles, or a tile and the coarse map, stays one surface.
+float terHeightSmooth(vec2 uv) {
+  vec2 res = u_tp_on > 0.5 ? vec2(u_tp_dims.w) : vec2(textureSize(TP_HMAP, 0));
   vec2 t = uv * res - 0.5;
   vec2 f = fract(t);
   vec2 i = floor(t);
@@ -36,9 +69,10 @@ float heightSmooth(sampler2D tex, vec2 uv) {
   vec2 s0 = w0 + w1, s1 = w2 + w3;
   vec2 o0 = (i - 1.0 + w1 / s0 + 0.5) / res;
   vec2 o1 = (i + 1.0 + w3 / s1 + 0.5) / res;
-  return (texture(tex, vec2(o0.x, o0.y)).r * s0.x + texture(tex, vec2(o1.x, o0.y)).r * s1.x) * s0.y
-       + (texture(tex, vec2(o0.x, o1.y)).r * s0.x + texture(tex, vec2(o1.x, o1.y)).r * s1.x) * s1.y;
+  return (terHeight(vec2(o0.x, o0.y)) * s0.x + terHeight(vec2(o1.x, o0.y)) * s1.x) * s0.y
+       + (terHeight(vec2(o0.x, o1.y)) * s0.x + terHeight(vec2(o1.x, o1.y)) * s1.x) * s1.y;
 }
+#endif
 out vec3 v_wpos;
 // The foliage prepass (depth.frag) and the lit pass after it compile this same source
 // into two programs and compare depths for equality: the position must come out
@@ -149,7 +183,7 @@ void main() {
   vec3 w = p + i_pos.xyz;
   if (u_ground > 0.5) {
     vec2 huv = (i_pos.xz - u_ts_origin) / (2.0 * u_ts_half) + 0.5;
-    w.y = heightSmooth(u_ts_height, huv) - 0.03 + p.y;
+    w.y = terHeightSmooth(huv) - 0.03 + p.y;
   }
   v_wpos = w;
   v_nrm = n;
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diff --git a/packages/ludic.render3d/shaders/spv/f4a2b586.frag.spv b/packages/ludic.render3d/shaders/spv/f4a2b586.frag.spv
index 47102fc6..1fd9940e 100644
Binary files a/packages/ludic.render3d/shaders/spv/f4a2b586.frag.spv and b/packages/ludic.render3d/shaders/spv/f4a2b586.frag.spv differ
diff --git a/packages/ludic.render3d/shaders/spv/f4a2b586.vert.spv b/packages/ludic.render3d/shaders/spv/f4a2b586.vert.spv
index 6a92a18d..38c604f5 100644
Binary files a/packages/ludic.render3d/shaders/spv/f4a2b586.vert.spv and b/packages/ludic.render3d/shaders/spv/f4a2b586.vert.spv differ
diff --git a/packages/ludic.render3d/shaders/spv/manifest.txt b/packages/ludic.render3d/shaders/spv/manifest.txt
index b93cc63c..beb7c065 100644
--- a/packages/ludic.render3d/shaders/spv/manifest.txt
+++ b/packages/ludic.render3d/shaders/spv/manifest.txt
@@ -926,7 +926,7 @@ T 74258189 u_tershadow 7
 T 74258189 u_tershadow_aux 8
 T 74258189 u_ts_height 9
 P d48d6a48 grass.mesh model.frag #define FOLIAGE;#define BLADE;#define MESH;
-B d48d6a48 vert 0 4388
+B d48d6a48 vert 0 4420
 U d48d6a48 vert u_view 0 mat4 1 0
 U d48d6a48 vert u_proj 64 mat4 1 0
 U d48d6a48 vert u_vp 128 mat4 1 0
@@ -935,18 +935,20 @@ U d48d6a48 vert u_time 204 float 1 0
 U d48d6a48 vert u_ts_origin 208 vec2 1 0
 U d48d6a48 vert u_ts_half 216 float 1 0
 U d48d6a48 vert u_ortho_on 220 float 1 0
-U d48d6a48 vert u_lake_level 224 float 1 0
-U d48d6a48 vert u_sea_level 228 float 1 0
-U d48d6a48 vert u_lake 240 vec4 1 0
-U d48d6a48 vert u_snow_line 256 float 1 0
-U d48d6a48 vert u_wind 260 float 1 0
-U d48d6a48 vert u_tile_cells 264 int 1 0
-U d48d6a48 vert u_tiles 272 vec4 256 16
-U d48d6a48 vert u_s0 4368 float 1 0
-U d48d6a48 vert u_d0 4372 float 1 0
-U d48d6a48 vert u_radius 4376 float 1 0
-U d48d6a48 vert u_px 4380 float 1 0
-U d48d6a48 vert u_dbg 4384 int 1 0
+U d48d6a48 vert u_tp_on 224 float 1 0
+U d48d6a48 vert u_tp_dims 240 vec4 1 0
+U d48d6a48 vert u_lake_level 256 float 1 0
+U d48d6a48 vert u_sea_level 260 float 1 0
+U d48d6a48 vert u_lake 272 vec4 1 0
+U d48d6a48 vert u_snow_line 288 float 1 0
+U d48d6a48 vert u_wind 292 float 1 0
+U d48d6a48 vert u_tile_cells 296 int 1 0
+U d48d6a48 vert u_tiles 304 vec4 256 16
+U d48d6a48 vert u_s0 4400 float 1 0
+U d48d6a48 vert u_d0 4404 float 1 0
+U d48d6a48 vert u_radius 4408 float 1 0
+U d48d6a48 vert u_px 4412 float 1 0
+U d48d6a48 vert u_dbg 4416 int 1 0
 B d48d6a48 frag 1 980
 U d48d6a48 frag u_cascade_vp 0 mat4 5 64
 U d48d6a48 frag u_cascade_split 320 float 5 16
@@ -1005,9 +1007,12 @@ T d48d6a48 u_shadow 10
 T d48d6a48 u_ter_normal 11
 T d48d6a48 u_tershadow 12
 T d48d6a48 u_tershadow_aux 13
-T d48d6a48 u_ts_height 14
+T d48d6a48 u_tp_h 14
+T d48d6a48 u_tp_nrm 15
+T d48d6a48 u_tp_page 16
+T d48d6a48 u_ts_height 17
 P cb13f3c6 grass.vert model.frag #define FOLIAGE;#define BLADE;#define GBLADE;
-B cb13f3c6 vert 0 324
+B cb13f3c6 vert 0 356
 U cb13f3c6 vert u_view 0 mat4 1 0
 U cb13f3c6 vert u_proj 64 mat4 1 0
 U cb13f3c6 vert u_vp 128 mat4 1 0
@@ -1016,20 +1021,22 @@ U cb13f3c6 vert u_time 204 float 1 0
 U cb13f3c6 vert u_ts_origin 208 vec2 1 0
 U cb13f3c6 vert u_ts_half 216 float 1 0
 U cb13f3c6 vert u_ortho_on 220 float 1 0
-U cb13f3c6 vert u_lake_level 224 float 1 0
-U cb13f3c6 vert u_sea_level 228 float 1 0
-U cb13f3c6 vert u_lake 240 vec4 1 0
-U cb13f3c6 vert u_snow_line 256 float 1 0
-U cb13f3c6 vert u_wind 260 float 1 0
-U cb13f3c6 vert u_push 272 vec3 1 0
-U cb13f3c6 vert u_tile 288 vec2 1 0
-U cb13f3c6 vert u_tile_cells 296 int 1 0
-U cb13f3c6 vert u_per_cell 300 int 1 0
-U cb13f3c6 vert u_s0 304 float 1 0
-U cb13f3c6 vert u_d0 308 float 1 0
-U cb13f3c6 vert u_radius 312 float 1 0
-U cb13f3c6 vert u_px 316 float 1 0
-U cb13f3c6 vert u_dbg 320 int 1 0
+U cb13f3c6 vert u_tp_on 224 float 1 0
+U cb13f3c6 vert u_tp_dims 240 vec4 1 0
+U cb13f3c6 vert u_lake_level 256 float 1 0
+U cb13f3c6 vert u_sea_level 260 float 1 0
+U cb13f3c6 vert u_lake 272 vec4 1 0
+U cb13f3c6 vert u_snow_line 288 float 1 0
+U cb13f3c6 vert u_wind 292 float 1 0
+U cb13f3c6 vert u_push 304 vec3 1 0
+U cb13f3c6 vert u_tile 320 vec2 1 0
+U cb13f3c6 vert u_tile_cells 328 int 1 0
+U cb13f3c6 vert u_per_cell 332 int 1 0
+U cb13f3c6 vert u_s0 336 float 1 0
+U cb13f3c6 vert u_d0 340 float 1 0
+U cb13f3c6 vert u_radius 344 float 1 0
+U cb13f3c6 vert u_px 348 float 1 0
+U cb13f3c6 vert u_dbg 352 int 1 0
 I cb13f3c6 a_pos 0 vec3
 I cb13f3c6 a_uv 2 vec2
 B cb13f3c6 frag 1 980
@@ -1090,9 +1097,12 @@ T cb13f3c6 u_shadow 10
 T cb13f3c6 u_ter_normal 11
 T cb13f3c6 u_tershadow 12
 T cb13f3c6 u_tershadow_aux 13
-T cb13f3c6 u_ts_height 14
+T cb13f3c6 u_tp_h 14
+T cb13f3c6 u_tp_nrm 15
+T cb13f3c6 u_tp_page 16
+T cb13f3c6 u_ts_height 17
 P b8cff226 grass.vert model.frag #define FOLIAGE;#define BLADE;#define GBLADE;#define TILES;
-B b8cff226 vert 0 4420
+B b8cff226 vert 0 4452
 U b8cff226 vert u_view 0 mat4 1 0
 U b8cff226 vert u_proj 64 mat4 1 0
 U b8cff226 vert u_vp 128 mat4 1 0
@@ -1101,21 +1111,23 @@ U b8cff226 vert u_time 204 float 1 0
 U b8cff226 vert u_ts_origin 208 vec2 1 0
 U b8cff226 vert u_ts_half 216 float 1 0
 U b8cff226 vert u_ortho_on 220 float 1 0
-U b8cff226 vert u_lake_level 224 float 1 0
-U b8cff226 vert u_sea_level 228 float 1 0
-U b8cff226 vert u_lake 240 vec4 1 0
-U b8cff226 vert u_snow_line 256 float 1 0
-U b8cff226 vert u_wind 260 float 1 0
-U b8cff226 vert u_push 272 vec3 1 0
-U b8cff226 vert u_tile 288 vec2 1 0
-U b8cff226 vert u_tile_cells 296 int 1 0
-U b8cff226 vert u_per_cell 300 int 1 0
-U b8cff226 vert u_tiles 304 vec4 256 16
-U b8cff226 vert u_s0 4400 float 1 0
-U b8cff226 vert u_d0 4404 float 1 0
-U b8cff226 vert u_radius 4408 float 1 0
-U b8cff226 vert u_px 4412 float 1 0
-U b8cff226 vert u_dbg 4416 int 1 0
+U b8cff226 vert u_tp_on 224 float 1 0
+U b8cff226 vert u_tp_dims 240 vec4 1 0
+U b8cff226 vert u_lake_level 256 float 1 0
+U b8cff226 vert u_sea_level 260 float 1 0
+U b8cff226 vert u_lake 272 vec4 1 0
+U b8cff226 vert u_snow_line 288 float 1 0
+U b8cff226 vert u_wind 292 float 1 0
+U b8cff226 vert u_push 304 vec3 1 0
+U b8cff226 vert u_tile 320 vec2 1 0
+U b8cff226 vert u_tile_cells 328 int 1 0
+U b8cff226 vert u_per_cell 332 int 1 0
+U b8cff226 vert u_tiles 336 vec4 256 16
+U b8cff226 vert u_s0 4432 float 1 0
+U b8cff226 vert u_d0 4436 float 1 0
+U b8cff226 vert u_radius 4440 float 1 0
+U b8cff226 vert u_px 4444 float 1 0
+U b8cff226 vert u_dbg 4448 int 1 0
 I b8cff226 a_pos 0 vec3
 I b8cff226 a_uv 2 vec2
 B b8cff226 frag 1 980
@@ -1176,7 +1188,10 @@ T b8cff226 u_shadow 10
 T b8cff226 u_ter_normal 11
 T b8cff226 u_tershadow 12
 T b8cff226 u_tershadow_aux 13
-T b8cff226 u_ts_height 14
+T b8cff226 u_tp_h 14
+T b8cff226 u_tp_nrm 15
+T b8cff226 u_tp_page 16
+T b8cff226 u_ts_height 17
 P 3733fc38 impostor.vert impostor.frag 
 B 3733fc38 vert 0 232
 U 3733fc38 vert u_view 0 mat4 1 0
@@ -1306,7 +1321,7 @@ T 4d4fa91b u_tershadow 8
 T 4d4fa91b u_tershadow_aux 9
 T 4d4fa91b u_ts_height 10
 P 9dce3246 model.vert bake.frag 
-B 9dce3246 vert 0 236
+B 9dce3246 vert 0 264
 U 9dce3246 vert u_view 0 mat4 1 0
 U 9dce3246 vert u_proj 64 mat4 1 0
 U 9dce3246 vert u_light_vp 128 mat4 1 0
@@ -1317,8 +1332,10 @@ U 9dce3246 vert u_card_h 204 float 1 0
 U 9dce3246 vert u_ground 208 float 1 0
 U 9dce3246 vert u_ts_origin 216 vec2 1 0
 U 9dce3246 vert u_ts_half 224 float 1 0
-U 9dce3246 vert u_model_h 228 float 1 0
-U 9dce3246 vert u_flutter 232 float 1 0
+U 9dce3246 vert u_tp_on 228 float 1 0
+U 9dce3246 vert u_tp_dims 240 vec4 1 0
+U 9dce3246 vert u_model_h 256 float 1 0
+U 9dce3246 vert u_flutter 260 float 1 0
 I 9dce3246 i_rot 4 vec4
 I 9dce3246 a_pos 0 vec3
 I 9dce3246 i_pos 3 vec4
@@ -1369,9 +1386,11 @@ T 9dce3246 u_prefilter 6
 T 9dce3246 u_shadow 7
 T 9dce3246 u_tershadow 8
 T 9dce3246 u_tershadow_aux 9
-T 9dce3246 u_ts_height 10
+T 9dce3246 u_tp_h 10
+T 9dce3246 u_tp_page 11
+T 9dce3246 u_ts_height 12
 P 439a2253 model.vert bake.frag #define CARD;
-B 439a2253 vert 0 236
+B 439a2253 vert 0 264
 U 439a2253 vert u_view 0 mat4 1 0
 U 439a2253 vert u_proj 64 mat4 1 0
 U 439a2253 vert u_light_vp 128 mat4 1 0
@@ -1382,8 +1401,10 @@ U 439a2253 vert u_card_h 204 float 1 0
 U 439a2253 vert u_ground 208 float 1 0
 U 439a2253 vert u_ts_origin 216 vec2 1 0
 U 439a2253 vert u_ts_half 224 float 1 0
-U 439a2253 vert u_model_h 228 float 1 0
-U 439a2253 vert u_flutter 232 float 1 0
+U 439a2253 vert u_tp_on 228 float 1 0
+U 439a2253 vert u_tp_dims 240 vec4 1 0
+U 439a2253 vert u_model_h 256 float 1 0
+U 439a2253 vert u_flutter 260 float 1 0
 I 439a2253 i_rot 4 vec4
 I 439a2253 a_pos 0 vec3
 I 439a2253 i_pos 3 vec4
@@ -1434,9 +1455,11 @@ T 439a2253 u_prefilter 6
 T 439a2253 u_shadow 7
 T 439a2253 u_tershadow 8
 T 439a2253 u_tershadow_aux 9
-T 439a2253 u_ts_height 10
+T 439a2253 u_tp_h 10
+T 439a2253 u_tp_page 11
+T 439a2253 u_ts_height 12
 P 86f427b0 model.vert bake.frag #define FLOWER;
-B 86f427b0 vert 0 236
+B 86f427b0 vert 0 264
 U 86f427b0 vert u_view 0 mat4 1 0
 U 86f427b0 vert u_proj 64 mat4 1 0
 U 86f427b0 vert u_light_vp 128 mat4 1 0
@@ -1447,8 +1470,10 @@ U 86f427b0 vert u_card_h 204 float 1 0
 U 86f427b0 vert u_ground 208 float 1 0
 U 86f427b0 vert u_ts_origin 216 vec2 1 0
 U 86f427b0 vert u_ts_half 224 float 1 0
-U 86f427b0 vert u_model_h 228 float 1 0
-U 86f427b0 vert u_flutter 232 float 1 0
+U 86f427b0 vert u_tp_on 228 float 1 0
+U 86f427b0 vert u_tp_dims 240 vec4 1 0
+U 86f427b0 vert u_model_h 256 float 1 0
+U 86f427b0 vert u_flutter 260 float 1 0
 I 86f427b0 i_rot 4 vec4
 I 86f427b0 a_pos 0 vec3
 I 86f427b0 i_pos 3 vec4
@@ -1499,9 +1524,11 @@ T 86f427b0 u_prefilter 6
 T 86f427b0 u_shadow 7
 T 86f427b0 u_tershadow 8
 T 86f427b0 u_tershadow_aux 9
-T 86f427b0 u_ts_height 10
+T 86f427b0 u_tp_h 10
+T 86f427b0 u_tp_page 11
+T 86f427b0 u_ts_height 12
 P bfa15301 model.vert depth.frag #define FOLIAGE;#define WIND;#define ALPHA_TEST;
-B bfa15301 vert 0 236
+B bfa15301 vert 0 264
 U bfa15301 vert u_view 0 mat4 1 0
 U bfa15301 vert u_proj 64 mat4 1 0
 U bfa15301 vert u_light_vp 128 mat4 1 0
@@ -1512,8 +1539,10 @@ U bfa15301 vert u_card_h 204 float 1 0
 U bfa15301 vert u_ground 208 float 1 0
 U bfa15301 vert u_ts_origin 216 vec2 1 0
 U bfa15301 vert u_ts_half 224 float 1 0
-U bfa15301 vert u_model_h 228 float 1 0
-U bfa15301 vert u_flutter 232 float 1 0
+U bfa15301 vert u_tp_on 228 float 1 0
+U bfa15301 vert u_tp_dims 240 vec4 1 0
+U bfa15301 vert u_model_h 256 float 1 0
+U bfa15301 vert u_flutter 260 float 1 0
 I bfa15301 i_rot 4 vec4
 I bfa15301 a_pos 0 vec3
 I bfa15301 i_pos 3 vec4
@@ -1563,9 +1592,11 @@ T bfa15301 u_prefilter 5
 T bfa15301 u_shadow 6
 T bfa15301 u_tershadow 7
 T bfa15301 u_tershadow_aux 8
-T bfa15301 u_ts_height 9
+T bfa15301 u_tp_h 9
+T bfa15301 u_tp_page 10
+T bfa15301 u_ts_height 11
 P 266d2401 model.vert depth.frag #define FOLIAGE;#define WIND;#define ALPHA_TEST;#define NEAR_FADE;
-B 266d2401 vert 0 236
+B 266d2401 vert 0 264
 U 266d2401 vert u_view 0 mat4 1 0
 U 266d2401 vert u_proj 64 mat4 1 0
 U 266d2401 vert u_light_vp 128 mat4 1 0
@@ -1576,8 +1607,10 @@ U 266d2401 vert u_card_h 204 float 1 0
 U 266d2401 vert u_ground 208 float 1 0
 U 266d2401 vert u_ts_origin 216 vec2 1 0
 U 266d2401 vert u_ts_half 224 float 1 0
-U 266d2401 vert u_model_h 228 float 1 0
-U 266d2401 vert u_flutter 232 float 1 0
+U 266d2401 vert u_tp_on 228 float 1 0
+U 266d2401 vert u_tp_dims 240 vec4 1 0
+U 266d2401 vert u_model_h 256 float 1 0
+U 266d2401 vert u_flutter 260 float 1 0
 I 266d2401 i_rot 4 vec4
 I 266d2401 a_pos 0 vec3
 I 266d2401 i_pos 3 vec4
@@ -1627,9 +1660,11 @@ T 266d2401 u_prefilter 5
 T 266d2401 u_shadow 6
 T 266d2401 u_tershadow 7
 T 266d2401 u_tershadow_aux 8
-T 266d2401 u_ts_height 9
+T 266d2401 u_tp_h 9
+T 266d2401 u_tp_page 10
+T 266d2401 u_ts_height 11
 P 01089da8 model.vert model.frag 
-B 01089da8 vert 0 236
+B 01089da8 vert 0 264
 U 01089da8 vert u_view 0 mat4 1 0
 U 01089da8 vert u_proj 64 mat4 1 0
 U 01089da8 vert u_light_vp 128 mat4 1 0
@@ -1640,8 +1675,10 @@ U 01089da8 vert u_card_h 204 float 1 0
 U 01089da8 vert u_ground 208 float 1 0
 U 01089da8 vert u_ts_origin 216 vec2 1 0
 U 01089da8 vert u_ts_half 224 float 1 0
-U 01089da8 vert u_model_h 228 float 1 0
-U 01089da8 vert u_flutter 232 float 1 0
+U 01089da8 vert u_tp_on 228 float 1 0
+U 01089da8 vert u_tp_dims 240 vec4 1 0
+U 01089da8 vert u_model_h 256 float 1 0
+U 01089da8 vert u_flutter 260 float 1 0
 I 01089da8 i_rot 4 vec4
 I 01089da8 a_pos 0 vec3
 I 01089da8 i_pos 3 vec4
@@ -1699,9 +1736,11 @@ T 01089da8 u_prefilter 8
 T 01089da8 u_shadow 9
 T 01089da8 u_tershadow 10
 T 01089da8 u_tershadow_aux 11
-T 01089da8 u_ts_height 12
+T 01089da8 u_tp_h 12
+T 01089da8 u_tp_page 13
+T 01089da8 u_ts_height 14
 P 254e7887 model.vert model.frag #define CARD;#define CHEAP;
-B 254e7887 vert 0 236
+B 254e7887 vert 0 264
 U 254e7887 vert u_view 0 mat4 1 0
 U 254e7887 vert u_proj 64 mat4 1 0
 U 254e7887 vert u_light_vp 128 mat4 1 0
@@ -1712,8 +1751,10 @@ U 254e7887 vert u_card_h 204 float 1 0
 U 254e7887 vert u_ground 208 float 1 0
 U 254e7887 vert u_ts_origin 216 vec2 1 0
 U 254e7887 vert u_ts_half 224 float 1 0
-U 254e7887 vert u_model_h 228 float 1 0
-U 254e7887 vert u_flutter 232 float 1 0
+U 254e7887 vert u_tp_on 228 float 1 0
+U 254e7887 vert u_tp_dims 240 vec4 1 0
+U 254e7887 vert u_model_h 256 float 1 0
+U 254e7887 vert u_flutter 260 float 1 0
 I 254e7887 i_rot 4 vec4
 I 254e7887 a_pos 0 vec3
 I 254e7887 i_pos 3 vec4
@@ -1772,9 +1813,11 @@ T 254e7887 u_prefilter 8
 T 254e7887 u_shadow 9
 T 254e7887 u_tershadow 10
 T 254e7887 u_tershadow_aux 11
-T 254e7887 u_ts_height 12
+T 254e7887 u_tp_h 12
+T 254e7887 u_tp_page 13
+T 254e7887 u_ts_height 14
 P 1ce5c5d1 model.vert model.frag #define FOLIAGE;#define WIND;#define ALPHA_TEST;
-B 1ce5c5d1 vert 0 236
+B 1ce5c5d1 vert 0 264
 U 1ce5c5d1 vert u_view 0 mat4 1 0
 U 1ce5c5d1 vert u_proj 64 mat4 1 0
 U 1ce5c5d1 vert u_light_vp 128 mat4 1 0
@@ -1785,8 +1828,10 @@ U 1ce5c5d1 vert u_card_h 204 float 1 0
 U 1ce5c5d1 vert u_ground 208 float 1 0
 U 1ce5c5d1 vert u_ts_origin 216 vec2 1 0
 U 1ce5c5d1 vert u_ts_half 224 float 1 0
-U 1ce5c5d1 vert u_model_h 228 float 1 0
-U 1ce5c5d1 vert u_flutter 232 float 1 0
+U 1ce5c5d1 vert u_tp_on 228 float 1 0
+U 1ce5c5d1 vert u_tp_dims 240 vec4 1 0
+U 1ce5c5d1 vert u_model_h 256 float 1 0
+U 1ce5c5d1 vert u_flutter 260 float 1 0
 I 1ce5c5d1 i_rot 4 vec4
 I 1ce5c5d1 a_pos 0 vec3
 I 1ce5c5d1 i_pos 3 vec4
@@ -1844,9 +1889,11 @@ T 1ce5c5d1 u_prefilter 8
 T 1ce5c5d1 u_shadow 9
 T 1ce5c5d1 u_tershadow 10
 T 1ce5c5d1 u_tershadow_aux 11
-T 1ce5c5d1 u_ts_height 12
+T 1ce5c5d1 u_tp_h 12
+T 1ce5c5d1 u_tp_page 13
+T 1ce5c5d1 u_ts_height 14
 P 5e70d731 model.vert model.frag #define FOLIAGE;#define WIND;#define ALPHA_TEST;#define NEAR_FADE;
-B 5e70d731 vert 0 236
+B 5e70d731 vert 0 264
 U 5e70d731 vert u_view 0 mat4 1 0
 U 5e70d731 vert u_proj 64 mat4 1 0
 U 5e70d731 vert u_light_vp 128 mat4 1 0
@@ -1857,8 +1904,10 @@ U 5e70d731 vert u_card_h 204 float 1 0
 U 5e70d731 vert u_ground 208 float 1 0
 U 5e70d731 vert u_ts_origin 216 vec2 1 0
 U 5e70d731 vert u_ts_half 224 float 1 0
-U 5e70d731 vert u_model_h 228 float 1 0
-U 5e70d731 vert u_flutter 232 float 1 0
+U 5e70d731 vert u_tp_on 228 float 1 0
+U 5e70d731 vert u_tp_dims 240 vec4 1 0
+U 5e70d731 vert u_model_h 256 float 1 0
+U 5e70d731 vert u_flutter 260 float 1 0
 I 5e70d731 i_rot 4 vec4
 I 5e70d731 a_pos 0 vec3
 I 5e70d731 i_pos 3 vec4
@@ -1916,9 +1965,11 @@ T 5e70d731 u_prefilter 8
 T 5e70d731 u_shadow 9
 T 5e70d731 u_tershadow 10
 T 5e70d731 u_tershadow_aux 11
-T 5e70d731 u_ts_height 12
+T 5e70d731 u_tp_h 12
+T 5e70d731 u_tp_page 13
+T 5e70d731 u_ts_height 14
 P f4a2b586 model.vert model.frag #define FOLIAGE;#define WIND;#define BLADE;
-B f4a2b586 vert 0 252
+B f4a2b586 vert 0 280
 U f4a2b586 vert u_view 0 mat4 1 0
 U f4a2b586 vert u_proj 64 mat4 1 0
 U f4a2b586 vert u_light_vp 128 mat4 1 0
@@ -1931,8 +1982,10 @@ U f4a2b586 vert u_cull 220 float 1 0
 U f4a2b586 vert u_ground 224 float 1 0
 U f4a2b586 vert u_ts_origin 232 vec2 1 0
 U f4a2b586 vert u_ts_half 240 float 1 0
-U f4a2b586 vert u_model_h 244 float 1 0
-U f4a2b586 vert u_flutter 248 float 1 0
+U f4a2b586 vert u_tp_on 244 float 1 0
+U f4a2b586 vert u_tp_dims 256 vec4 1 0
+U f4a2b586 vert u_model_h 272 float 1 0
+U f4a2b586 vert u_flutter 276 float 1 0
 I f4a2b586 i_rot 4 vec4
 I f4a2b586 a_pos 0 vec3
 I f4a2b586 i_pos 3 vec4
@@ -1994,9 +2047,11 @@ T f4a2b586 u_prefilter 8
 T f4a2b586 u_shadow 9
 T f4a2b586 u_tershadow 10
 T f4a2b586 u_tershadow_aux 11
-T f4a2b586 u_ts_height 12
+T f4a2b586 u_tp_h 12
+T f4a2b586 u_tp_page 13
+T f4a2b586 u_ts_height 14
 P b4587cd4 model.vert model.frag #define FOLIAGE;#define WIND;#define CARD;
-B b4587cd4 vert 0 236
+B b4587cd4 vert 0 264
 U b4587cd4 vert u_view 0 mat4 1 0
 U b4587cd4 vert u_proj 64 mat4 1 0
 U b4587cd4 vert u_light_vp 128 mat4 1 0
@@ -2007,8 +2062,10 @@ U b4587cd4 vert u_card_h 204 float 1 0
 U b4587cd4 vert u_ground 208 float 1 0
 U b4587cd4 vert u_ts_origin 216 vec2 1 0
 U b4587cd4 vert u_ts_half 224 float 1 0
-U b4587cd4 vert u_model_h 228 float 1 0
-U b4587cd4 vert u_flutter 232 float 1 0
+U b4587cd4 vert u_tp_on 228 float 1 0
+U b4587cd4 vert u_tp_dims 240 vec4 1 0
+U b4587cd4 vert u_model_h 256 float 1 0
+U b4587cd4 vert u_flutter 260 float 1 0
 I b4587cd4 i_rot 4 vec4
 I b4587cd4 a_pos 0 vec3
 I b4587cd4 i_pos 3 vec4
@@ -2067,9 +2124,11 @@ T b4587cd4 u_prefilter 8
 T b4587cd4 u_shadow 9
 T b4587cd4 u_tershadow 10
 T b4587cd4 u_tershadow_aux 11
-T b4587cd4 u_ts_height 12
+T b4587cd4 u_tp_h 12
+T b4587cd4 u_tp_page 13
+T b4587cd4 u_ts_height 14
 P 4dda406a model.vert model.frag #define FOLIAGE;#define WIND;#define EQ_PASS;
-B 4dda406a vert 0 236
+B 4dda406a vert 0 264
 U 4dda406a vert u_view 0 mat4 1 0
 U 4dda406a vert u_proj 64 mat4 1 0
 U 4dda406a vert u_light_vp 128 mat4 1 0
@@ -2080,8 +2139,10 @@ U 4dda406a vert u_card_h 204 float 1 0
 U 4dda406a vert u_ground 208 float 1 0
 U 4dda406a vert u_ts_origin 216 vec2 1 0
 U 4dda406a vert u_ts_half 224 float 1 0
-U 4dda406a vert u_model_h 228 float 1 0
-U 4dda406a vert u_flutter 232 float 1 0
+U 4dda406a vert u_tp_on 228 float 1 0
+U 4dda406a vert u_tp_dims 240 vec4 1 0
+U 4dda406a vert u_model_h 256 float 1 0
+U 4dda406a vert u_flutter 260 float 1 0
 I 4dda406a i_rot 4 vec4
 I 4dda406a a_pos 0 vec3
 I 4dda406a i_pos 3 vec4
@@ -2139,9 +2200,11 @@ T 4dda406a u_prefilter 8
 T 4dda406a u_shadow 9
 T 4dda406a u_tershadow 10
 T 4dda406a u_tershadow_aux 11
-T 4dda406a u_ts_height 12
+T 4dda406a u_tp_h 12
+T 4dda406a u_tp_page 13
+T 4dda406a u_ts_height 14
 P b603a056 model.vert model.frag #define FOLIAGE;#define WIND;#define EQ_PASS;#define NEAR_FADE;
-B b603a056 vert 0 236
+B b603a056 vert 0 264
 U b603a056 vert u_view 0 mat4 1 0
 U b603a056 vert u_proj 64 mat4 1 0
 U b603a056 vert u_light_vp 128 mat4 1 0
@@ -2152,8 +2215,10 @@ U b603a056 vert u_card_h 204 float 1 0
 U b603a056 vert u_ground 208 float 1 0
 U b603a056 vert u_ts_origin 216 vec2 1 0
 U b603a056 vert u_ts_half 224 float 1 0
-U b603a056 vert u_model_h 228 float 1 0
-U b603a056 vert u_flutter 232 float 1 0
+U b603a056 vert u_tp_on 228 float 1 0
+U b603a056 vert u_tp_dims 240 vec4 1 0
+U b603a056 vert u_model_h 256 float 1 0
+U b603a056 vert u_flutter 260 float 1 0
 I b603a056 i_rot 4 vec4
 I b603a056 a_pos 0 vec3
 I b603a056 i_pos 3 vec4
@@ -2211,9 +2276,11 @@ T b603a056 u_prefilter 8
 T b603a056 u_shadow 9
 T b603a056 u_tershadow 10
 T b603a056 u_tershadow_aux 11
-T b603a056 u_ts_height 12
+T b603a056 u_tp_h 12
+T b603a056 u_tp_page 13
+T b603a056 u_ts_height 14
 P 3b183d8f model.vert model.frag #define FOLIAGE;#define WIND;#define FLOWER;
-B 3b183d8f vert 0 236
+B 3b183d8f vert 0 264
 U 3b183d8f vert u_view 0 mat4 1 0
 U 3b183d8f vert u_proj 64 mat4 1 0
 U 3b183d8f vert u_light_vp 128 mat4 1 0
@@ -2224,8 +2291,10 @@ U 3b183d8f vert u_card_h 204 float 1 0
 U 3b183d8f vert u_ground 208 float 1 0
 U 3b183d8f vert u_ts_origin 216 vec2 1 0
 U 3b183d8f vert u_ts_half 224 float 1 0
-U 3b183d8f vert u_model_h 228 float 1 0
-U 3b183d8f vert u_flutter 232 float 1 0
+U 3b183d8f vert u_tp_on 228 float 1 0
+U 3b183d8f vert u_tp_dims 240 vec4 1 0
+U 3b183d8f vert u_model_h 256 float 1 0
+U 3b183d8f vert u_flutter 260 float 1 0
 I 3b183d8f i_rot 4 vec4
 I 3b183d8f a_pos 0 vec3
 I 3b183d8f i_pos 3 vec4
@@ -2283,9 +2352,11 @@ T 3b183d8f u_prefilter 8
 T 3b183d8f u_shadow 9
 T 3b183d8f u_tershadow 10
 T 3b183d8f u_tershadow_aux 11
-T 3b183d8f u_ts_height 12
+T 3b183d8f u_tp_h 12
+T 3b183d8f u_tp_page 13
+T 3b183d8f u_ts_height 14
 P 79b77ed9 model.vert model.frag #define SHADOW_PASS;#define WIND;#define CARD;
-B 79b77ed9 vert 0 236
+B 79b77ed9 vert 0 264
 U 79b77ed9 vert u_view 0 mat4 1 0
 U 79b77ed9 vert u_proj 64 mat4 1 0
 U 79b77ed9 vert u_light_vp 128 mat4 1 0
@@ -2296,8 +2367,10 @@ U 79b77ed9 vert u_card_h 204 float 1 0
 U 79b77ed9 vert u_ground 208 float 1 0
 U 79b77ed9 vert u_ts_origin 216 vec2 1 0
 U 79b77ed9 vert u_ts_half 224 float 1 0
-U 79b77ed9 vert u_model_h 228 float 1 0
-U 79b77ed9 vert u_flutter 232 float 1 0
+U 79b77ed9 vert u_tp_on 228 float 1 0
+U 79b77ed9 vert u_tp_dims 240 vec4 1 0
+U 79b77ed9 vert u_model_h 256 float 1 0
+U 79b77ed9 vert u_flutter 260 float 1 0
 I 79b77ed9 i_rot 4 vec4
 I 79b77ed9 a_pos 0 vec3
 I 79b77ed9 i_pos 3 vec4
@@ -2356,9 +2429,11 @@ T 79b77ed9 u_prefilter 8
 T 79b77ed9 u_shadow 9
 T 79b77ed9 u_tershadow 10
 T 79b77ed9 u_tershadow_aux 11
-T 79b77ed9 u_ts_height 12
+T 79b77ed9 u_tp_h 12
+T 79b77ed9 u_tp_page 13
+T 79b77ed9 u_ts_height 14
 P b9fc2041 model.vert model.frag #define WIND;
-B b9fc2041 vert 0 236
+B b9fc2041 vert 0 264
 U b9fc2041 vert u_view 0 mat4 1 0
 U b9fc2041 vert u_proj 64 mat4 1 0
 U b9fc2041 vert u_light_vp 128 mat4 1 0
@@ -2369,8 +2444,10 @@ U b9fc2041 vert u_card_h 204 float 1 0
 U b9fc2041 vert u_ground 208 float 1 0
 U b9fc2041 vert u_ts_origin 216 vec2 1 0
 U b9fc2041 vert u_ts_half 224 float 1 0
-U b9fc2041 vert u_model_h 228 float 1 0
-U b9fc2041 vert u_flutter 232 float 1 0
+U b9fc2041 vert u_tp_on 228 float 1 0
+U b9fc2041 vert u_tp_dims 240 vec4 1 0
+U b9fc2041 vert u_model_h 256 float 1 0
+U b9fc2041 vert u_flutter 260 float 1 0
 I b9fc2041 i_rot 4 vec4
 I b9fc2041 a_pos 0 vec3
 I b9fc2041 i_pos 3 vec4
@@ -2428,9 +2505,11 @@ T b9fc2041 u_prefilter 8
 T b9fc2041 u_shadow 9
 T b9fc2041 u_tershadow 10
 T b9fc2041 u_tershadow_aux 11
-T b9fc2041 u_ts_height 12
+T b9fc2041 u_tp_h 12
+T b9fc2041 u_tp_page 13
+T b9fc2041 u_ts_height 14
 P f34dce08 model.vert shadow.frag #define SHADOW_PASS;
-B f34dce08 vert 0 236
+B f34dce08 vert 0 264
 U f34dce08 vert u_view 0 mat4 1 0
 U f34dce08 vert u_proj 64 mat4 1 0
 U f34dce08 vert u_light_vp 128 mat4 1 0
@@ -2441,8 +2520,10 @@ U f34dce08 vert u_card_h 204 float 1 0
 U f34dce08 vert u_ground 208 float 1 0
 U f34dce08 vert u_ts_origin 216 vec2 1 0
 U f34dce08 vert u_ts_half 224 float 1 0
-U f34dce08 vert u_model_h 228 float 1 0
-U f34dce08 vert u_flutter 232 float 1 0
+U f34dce08 vert u_tp_on 228 float 1 0
+U f34dce08 vert u_tp_dims 240 vec4 1 0
+U f34dce08 vert u_model_h 256 float 1 0
+U f34dce08 vert u_flutter 260 float 1 0
 I f34dce08 i_rot 4 vec4
 I f34dce08 a_pos 0 vec3
 I f34dce08 i_pos 3 vec4
@@ -2492,9 +2573,11 @@ T f34dce08 u_prefilter 5
 T f34dce08 u_shadow 6
 T f34dce08 u_tershadow 7
 T f34dce08 u_tershadow_aux 8
-T f34dce08 u_ts_height 9
+T f34dce08 u_tp_h 9
+T f34dce08 u_tp_page 10
+T f34dce08 u_ts_height 11
 P 512004a1 model.vert shadow.frag #define SHADOW_PASS;#define WIND;
-B 512004a1 vert 0 236
+B 512004a1 vert 0 264
 U 512004a1 vert u_view 0 mat4 1 0
 U 512004a1 vert u_proj 64 mat4 1 0
 U 512004a1 vert u_light_vp 128 mat4 1 0
@@ -2505,8 +2588,10 @@ U 512004a1 vert u_card_h 204 float 1 0
 U 512004a1 vert u_ground 208 float 1 0
 U 512004a1 vert u_ts_origin 216 vec2 1 0
 U 512004a1 vert u_ts_half 224 float 1 0
-U 512004a1 vert u_model_h 228 float 1 0
-U 512004a1 vert u_flutter 232 float 1 0
+U 512004a1 vert u_tp_on 228 float 1 0
+U 512004a1 vert u_tp_dims 240 vec4 1 0
+U 512004a1 vert u_model_h 256 float 1 0
+U 512004a1 vert u_flutter 260 float 1 0
 I 512004a1 i_rot 4 vec4
 I 512004a1 a_pos 0 vec3
 I 512004a1 i_pos 3 vec4
@@ -2556,9 +2641,11 @@ T 512004a1 u_prefilter 5
 T 512004a1 u_shadow 6
 T 512004a1 u_tershadow 7
 T 512004a1 u_tershadow_aux 8
-T 512004a1 u_ts_height 9
+T 512004a1 u_tp_h 9
+T 512004a1 u_tp_page 10
+T 512004a1 u_ts_height 11
 P b964507f model.vert shadow.frag #define SHADOW_PASS;#define WIND;#define ALPHA_TEST;
-B b964507f vert 0 236
+B b964507f vert 0 264
 U b964507f vert u_view 0 mat4 1 0
 U b964507f vert u_proj 64 mat4 1 0
 U b964507f vert u_light_vp 128 mat4 1 0
@@ -2569,8 +2656,10 @@ U b964507f vert u_card_h 204 float 1 0
 U b964507f vert u_ground 208 float 1 0
 U b964507f vert u_ts_origin 216 vec2 1 0
 U b964507f vert u_ts_half 224 float 1 0
-U b964507f vert u_model_h 228 float 1 0
-U b964507f vert u_flutter 232 float 1 0
+U b964507f vert u_tp_on 228 float 1 0
+U b964507f vert u_tp_dims 240 vec4 1 0
+U b964507f vert u_model_h 256 float 1 0
+U b964507f vert u_flutter 260 float 1 0
 I b964507f i_rot 4 vec4
 I b964507f a_pos 0 vec3
 I b964507f i_pos 3 vec4
@@ -2620,7 +2709,9 @@ T b964507f u_prefilter 5
 T b964507f u_shadow 6
 T b964507f u_tershadow 7
 T b964507f u_tershadow_aux 8
-T b964507f u_ts_height 9
+T b964507f u_tp_h 9
+T b964507f u_tp_page 10
+T b964507f u_ts_height 11
 P 1b654972 overlay.vert overlay.frag 
 B 1b654972 vert 0 8
 U 1b654972 vert u_screen 0 vec2 1 0
@@ -3096,7 +3187,7 @@ T a64015f2 u_tershadow 7
 T a64015f2 u_tershadow_aux 8
 T a64015f2 u_ts_height 9
 P 2e2908c8 terrain.vert terrain.frag 
-B 2e2908c8 vert 0 204
+B 2e2908c8 vert 0 224
 U 2e2908c8 vert u_half 0 float 1 0
 U 2e2908c8 vert u_view 16 mat4 1 0
 U 2e2908c8 vert u_proj 80 mat4 1 0
@@ -3105,8 +3196,10 @@ U 2e2908c8 vert u_cam_pos 160 vec3 1 0
 U 2e2908c8 vert u_node 176 vec3 1 0
 U 2e2908c8 vert u_morph 192 vec2 1 0
 U 2e2908c8 vert u_grid 200 float 1 0
+U 2e2908c8 vert u_tp_on 204 float 1 0
+U 2e2908c8 vert u_tp_dims 208 vec4 1 0
 I 2e2908c8 a_xz 0 vec2
-B 2e2908c8 frag 1 968
+B 2e2908c8 frag 1 1000
 U 2e2908c8 frag u_cascade_vp 0 mat4 5 64
 U 2e2908c8 frag u_cascade_split 320 float 5 16
 U 2e2908c8 frag u_cascade_range 400 float 5 16
@@ -3146,16 +3239,18 @@ U 2e2908c8 frag u_fog_wall 828 float 1 0
 U 2e2908c8 frag u_half 832 float 1 0
 U 2e2908c8 frag u_texel 836 float 1 0
 U 2e2908c8 frag u_ortho_on 840 float 1 0
-U 2e2908c8 frag u_carpet_on 844 float 1 0
-U 2e2908c8 frag u_snow_line 848 float 1 0
-U 2e2908c8 frag u_lake_level 852 float 1 0
-U 2e2908c8 frag u_wet 856 float 1 0
-U 2e2908c8 frag u_sea_level 860 float 1 0
-U 2e2908c8 frag u_lake 864 vec4 1 0
-U 2e2908c8 frag u_origin 880 vec2 1 0
-U 2e2908c8 frag u_view 896 mat4 1 0
-U 2e2908c8 frag u_far_split 960 float 1 0
-U 2e2908c8 frag u_far_band 964 float 1 0
+U 2e2908c8 frag u_tp_on 844 float 1 0
+U 2e2908c8 frag u_tp_dims 848 vec4 1 0
+U 2e2908c8 frag u_carpet_on 864 float 1 0
+U 2e2908c8 frag u_snow_line 868 float 1 0
+U 2e2908c8 frag u_lake_level 872 float 1 0
+U 2e2908c8 frag u_wet 876 float 1 0
+U 2e2908c8 frag u_sea_level 880 float 1 0
+U 2e2908c8 frag u_lake 896 vec4 1 0
+U 2e2908c8 frag u_origin 912 vec2 1 0
+U 2e2908c8 frag u_view 928 mat4 1 0
+U 2e2908c8 frag u_far_split 992 float 1 0
+U 2e2908c8 frag u_far_band 996 float 1 0
 T 2e2908c8 u_brdf 2
 T 2e2908c8 u_carpet 3
 T 2e2908c8 u_grass_a 4
@@ -3174,9 +3269,13 @@ T 2e2908c8 u_sunshadow 16
 T 2e2908c8 u_ter_normal 17
 T 2e2908c8 u_tershadow 18
 T 2e2908c8 u_tershadow_aux 19
-T 2e2908c8 u_ts_height 20
+T 2e2908c8 u_tp_h 20
+T 2e2908c8 u_tp_nrm 21
+T 2e2908c8 u_tp_ortho 22
+T 2e2908c8 u_tp_page 23
+T 2e2908c8 u_ts_height 24
 P 1f95f31b terrain.vert terrain.frag #define FAR_ONLY;
-B 1f95f31b vert 0 204
+B 1f95f31b vert 0 224
 U 1f95f31b vert u_half 0 float 1 0
 U 1f95f31b vert u_view 16 mat4 1 0
 U 1f95f31b vert u_proj 80 mat4 1 0
@@ -3185,8 +3284,10 @@ U 1f95f31b vert u_cam_pos 160 vec3 1 0
 U 1f95f31b vert u_node 176 vec3 1 0
 U 1f95f31b vert u_morph 192 vec2 1 0
 U 1f95f31b vert u_grid 200 float 1 0
+U 1f95f31b vert u_tp_on 204 float 1 0
+U 1f95f31b vert u_tp_dims 208 vec4 1 0
 I 1f95f31b a_xz 0 vec2
-B 1f95f31b frag 1 968
+B 1f95f31b frag 1 1000
 U 1f95f31b frag u_cascade_vp 0 mat4 5 64
 U 1f95f31b frag u_cascade_split 320 float 5 16
 U 1f95f31b frag u_cascade_range 400 float 5 16
@@ -3226,16 +3327,18 @@ U 1f95f31b frag u_fog_wall 828 float 1 0
 U 1f95f31b frag u_half 832 float 1 0
 U 1f95f31b frag u_texel 836 float 1 0
 U 1f95f31b frag u_ortho_on 840 float 1 0
-U 1f95f31b frag u_carpet_on 844 float 1 0
-U 1f95f31b frag u_snow_line 848 float 1 0
-U 1f95f31b frag u_lake_level 852 float 1 0
-U 1f95f31b frag u_wet 856 float 1 0
-U 1f95f31b frag u_sea_level 860 float 1 0
-U 1f95f31b frag u_lake 864 vec4 1 0
-U 1f95f31b frag u_origin 880 vec2 1 0
-U 1f95f31b frag u_view 896 mat4 1 0
-U 1f95f31b frag u_far_split 960 float 1 0
-U 1f95f31b frag u_far_band 964 float 1 0
+U 1f95f31b frag u_tp_on 844 float 1 0
+U 1f95f31b frag u_tp_dims 848 vec4 1 0
+U 1f95f31b frag u_carpet_on 864 float 1 0
+U 1f95f31b frag u_snow_line 868 float 1 0
+U 1f95f31b frag u_lake_level 872 float 1 0
+U 1f95f31b frag u_wet 876 float 1 0
+U 1f95f31b frag u_sea_level 880 float 1 0
+U 1f95f31b frag u_lake 896 vec4 1 0
+U 1f95f31b frag u_origin 912 vec2 1 0
+U 1f95f31b frag u_view 928 mat4 1 0
+U 1f95f31b frag u_far_split 992 float 1 0
+U 1f95f31b frag u_far_band 996 float 1 0
 T 1f95f31b u_brdf 2
 T 1f95f31b u_carpet 3
 T 1f95f31b u_grass_a 4
@@ -3254,9 +3357,13 @@ T 1f95f31b u_sunshadow 16
 T 1f95f31b u_ter_normal 17
 T 1f95f31b u_tershadow 18
 T 1f95f31b u_tershadow_aux 19
-T 1f95f31b u_ts_height 20
+T 1f95f31b u_tp_h 20
+T 1f95f31b u_tp_nrm 21
+T 1f95f31b u_tp_ortho 22
+T 1f95f31b u_tp_page 23
+T 1f95f31b u_ts_height 24
 P f4382918 terrain.vert terrain.frag #define NEAR_ONLY;
-B f4382918 vert 0 204
+B f4382918 vert 0 224
 U f4382918 vert u_half 0 float 1 0
 U f4382918 vert u_view 16 mat4 1 0
 U f4382918 vert u_proj 80 mat4 1 0
@@ -3265,8 +3372,10 @@ U f4382918 vert u_cam_pos 160 vec3 1 0
 U f4382918 vert u_node 176 vec3 1 0
 U f4382918 vert u_morph 192 vec2 1 0
 U f4382918 vert u_grid 200 float 1 0
+U f4382918 vert u_tp_on 204 float 1 0
+U f4382918 vert u_tp_dims 208 vec4 1 0
 I f4382918 a_xz 0 vec2
-B f4382918 frag 1 968
+B f4382918 frag 1 1000
 U f4382918 frag u_cascade_vp 0 mat4 5 64
 U f4382918 frag u_cascade_split 320 float 5 16
 U f4382918 frag u_cascade_range 400 float 5 16
@@ -3306,16 +3415,18 @@ U f4382918 frag u_fog_wall 828 float 1 0
 U f4382918 frag u_half 832 float 1 0
 U f4382918 frag u_texel 836 float 1 0
 U f4382918 frag u_ortho_on 840 float 1 0
-U f4382918 frag u_carpet_on 844 float 1 0
-U f4382918 frag u_snow_line 848 float 1 0
-U f4382918 frag u_lake_level 852 float 1 0
-U f4382918 frag u_wet 856 float 1 0
-U f4382918 frag u_sea_level 860 float 1 0
-U f4382918 frag u_lake 864 vec4 1 0
-U f4382918 frag u_origin 880 vec2 1 0
-U f4382918 frag u_view 896 mat4 1 0
-U f4382918 frag u_far_split 960 float 1 0
-U f4382918 frag u_far_band 964 float 1 0
+U f4382918 frag u_tp_on 844 float 1 0
+U f4382918 frag u_tp_dims 848 vec4 1 0
+U f4382918 frag u_carpet_on 864 float 1 0
+U f4382918 frag u_snow_line 868 float 1 0
+U f4382918 frag u_lake_level 872 float 1 0
+U f4382918 frag u_wet 876 float 1 0
+U f4382918 frag u_sea_level 880 float 1 0
+U f4382918 frag u_lake 896 vec4 1 0
+U f4382918 frag u_origin 912 vec2 1 0
+U f4382918 frag u_view 928 mat4 1 0
+U f4382918 frag u_far_split 992 float 1 0
+U f4382918 frag u_far_band 996 float 1 0
 T f4382918 u_brdf 2
 T f4382918 u_carpet 3
 T f4382918 u_grass_a 4
@@ -3334,9 +3445,13 @@ T f4382918 u_sunshadow 16
 T f4382918 u_ter_normal 17
 T f4382918 u_tershadow 18
 T f4382918 u_tershadow_aux 19
-T f4382918 u_ts_height 20
+T f4382918 u_tp_h 20
+T f4382918 u_tp_nrm 21
+T f4382918 u_tp_ortho 22
+T f4382918 u_tp_page 23
+T f4382918 u_ts_height 24
 P f2952361 terrain.vert terrain.frag #define SUN_INLINE;
-B f2952361 vert 0 204
+B f2952361 vert 0 224
 U f2952361 vert u_half 0 float 1 0
 U f2952361 vert u_view 16 mat4 1 0
 U f2952361 vert u_proj 80 mat4 1 0
@@ -3345,8 +3460,10 @@ U f2952361 vert u_cam_pos 160 vec3 1 0
 U f2952361 vert u_node 176 vec3 1 0
 U f2952361 vert u_morph 192 vec2 1 0
 U f2952361 vert u_grid 200 float 1 0
+U f2952361 vert u_tp_on 204 float 1 0
+U f2952361 vert u_tp_dims 208 vec4 1 0
 I f2952361 a_xz 0 vec2
-B f2952361 frag 1 968
+B f2952361 frag 1 1000
 U f2952361 frag u_cascade_vp 0 mat4 5 64
 U f2952361 frag u_cascade_split 320 float 5 16
 U f2952361 frag u_cascade_range 400 float 5 16
@@ -3386,16 +3503,18 @@ U f2952361 frag u_fog_wall 828 float 1 0
 U f2952361 frag u_half 832 float 1 0
 U f2952361 frag u_texel 836 float 1 0
 U f2952361 frag u_ortho_on 840 float 1 0
-U f2952361 frag u_carpet_on 844 float 1 0
-U f2952361 frag u_snow_line 848 float 1 0
-U f2952361 frag u_lake_level 852 float 1 0
-U f2952361 frag u_wet 856 float 1 0
-U f2952361 frag u_sea_level 860 float 1 0
-U f2952361 frag u_lake 864 vec4 1 0
-U f2952361 frag u_origin 880 vec2 1 0
-U f2952361 frag u_view 896 mat4 1 0
-U f2952361 frag u_far_split 960 float 1 0
-U f2952361 frag u_far_band 964 float 1 0
+U f2952361 frag u_tp_on 844 float 1 0
+U f2952361 frag u_tp_dims 848 vec4 1 0
+U f2952361 frag u_carpet_on 864 float 1 0
+U f2952361 frag u_snow_line 868 float 1 0
+U f2952361 frag u_lake_level 872 float 1 0
+U f2952361 frag u_wet 876 float 1 0
+U f2952361 frag u_sea_level 880 float 1 0
+U f2952361 frag u_lake 896 vec4 1 0
+U f2952361 frag u_origin 912 vec2 1 0
+U f2952361 frag u_view 928 mat4 1 0
+U f2952361 frag u_far_split 992 float 1 0
+U f2952361 frag u_far_band 996 float 1 0
 T f2952361 u_brdf 2
 T f2952361 u_carpet 3
 T f2952361 u_grass_a 4
@@ -3414,9 +3533,13 @@ T f2952361 u_sunshadow 16
 T f2952361 u_ter_normal 17
 T f2952361 u_tershadow 18
 T f2952361 u_tershadow_aux 19
-T f2952361 u_ts_height 20
+T f2952361 u_tp_h 20
+T f2952361 u_tp_nrm 21
+T f2952361 u_tp_ortho 22
+T f2952361 u_tp_page 23
+T f2952361 u_ts_height 24
 P a0f2dbac terrain.vert terrain.frag #define SUN_INLINE;#define FAR_ONLY;
-B a0f2dbac vert 0 204
+B a0f2dbac vert 0 224
 U a0f2dbac vert u_half 0 float 1 0
 U a0f2dbac vert u_view 16 mat4 1 0
 U a0f2dbac vert u_proj 80 mat4 1 0
@@ -3425,8 +3548,10 @@ U a0f2dbac vert u_cam_pos 160 vec3 1 0
 U a0f2dbac vert u_node 176 vec3 1 0
 U a0f2dbac vert u_morph 192 vec2 1 0
 U a0f2dbac vert u_grid 200 float 1 0
+U a0f2dbac vert u_tp_on 204 float 1 0
+U a0f2dbac vert u_tp_dims 208 vec4 1 0
 I a0f2dbac a_xz 0 vec2
-B a0f2dbac frag 1 968
+B a0f2dbac frag 1 1000
 U a0f2dbac frag u_cascade_vp 0 mat4 5 64
 U a0f2dbac frag u_cascade_split 320 float 5 16
 U a0f2dbac frag u_cascade_range 400 float 5 16
@@ -3466,16 +3591,18 @@ U a0f2dbac frag u_fog_wall 828 float 1 0
 U a0f2dbac frag u_half 832 float 1 0
 U a0f2dbac frag u_texel 836 float 1 0
 U a0f2dbac frag u_ortho_on 840 float 1 0
-U a0f2dbac frag u_carpet_on 844 float 1 0
-U a0f2dbac frag u_snow_line 848 float 1 0
-U a0f2dbac frag u_lake_level 852 float 1 0
-U a0f2dbac frag u_wet 856 float 1 0
-U a0f2dbac frag u_sea_level 860 float 1 0
-U a0f2dbac frag u_lake 864 vec4 1 0
-U a0f2dbac frag u_origin 880 vec2 1 0
-U a0f2dbac frag u_view 896 mat4 1 0
-U a0f2dbac frag u_far_split 960 float 1 0
-U a0f2dbac frag u_far_band 964 float 1 0
+U a0f2dbac frag u_tp_on 844 float 1 0
+U a0f2dbac frag u_tp_dims 848 vec4 1 0
+U a0f2dbac frag u_carpet_on 864 float 1 0
+U a0f2dbac frag u_snow_line 868 float 1 0
+U a0f2dbac frag u_lake_level 872 float 1 0
+U a0f2dbac frag u_wet 876 float 1 0
+U a0f2dbac frag u_sea_level 880 float 1 0
+U a0f2dbac frag u_lake 896 vec4 1 0
+U a0f2dbac frag u_origin 912 vec2 1 0
+U a0f2dbac frag u_view 928 mat4 1 0
+U a0f2dbac frag u_far_split 992 float 1 0
+U a0f2dbac frag u_far_band 996 float 1 0
 T a0f2dbac u_brdf 2
 T a0f2dbac u_carpet 3
 T a0f2dbac u_grass_a 4
@@ -3494,9 +3621,13 @@ T a0f2dbac u_sunshadow 16
 T a0f2dbac u_ter_normal 17
 T a0f2dbac u_tershadow 18
 T a0f2dbac u_tershadow_aux 19
-T a0f2dbac u_ts_height 20
+T a0f2dbac u_tp_h 20
+T a0f2dbac u_tp_nrm 21
+T a0f2dbac u_tp_ortho 22
+T a0f2dbac u_tp_page 23
+T a0f2dbac u_ts_height 24
 P 5e4589a1 terrain.vert terrain.frag #define SUN_INLINE;#define NEAR_ONLY;
-B 5e4589a1 vert 0 204
+B 5e4589a1 vert 0 224
 U 5e4589a1 vert u_half 0 float 1 0
 U 5e4589a1 vert u_view 16 mat4 1 0
 U 5e4589a1 vert u_proj 80 mat4 1 0
@@ -3505,8 +3636,10 @@ U 5e4589a1 vert u_cam_pos 160 vec3 1 0
 U 5e4589a1 vert u_node 176 vec3 1 0
 U 5e4589a1 vert u_morph 192 vec2 1 0
 U 5e4589a1 vert u_grid 200 float 1 0
+U 5e4589a1 vert u_tp_on 204 float 1 0
+U 5e4589a1 vert u_tp_dims 208 vec4 1 0
 I 5e4589a1 a_xz 0 vec2
-B 5e4589a1 frag 1 968
+B 5e4589a1 frag 1 1000
 U 5e4589a1 frag u_cascade_vp 0 mat4 5 64
 U 5e4589a1 frag u_cascade_split 320 float 5 16
 U 5e4589a1 frag u_cascade_range 400 float 5 16
@@ -3546,16 +3679,18 @@ U 5e4589a1 frag u_fog_wall 828 float 1 0
 U 5e4589a1 frag u_half 832 float 1 0
 U 5e4589a1 frag u_texel 836 float 1 0
 U 5e4589a1 frag u_ortho_on 840 float 1 0
-U 5e4589a1 frag u_carpet_on 844 float 1 0
-U 5e4589a1 frag u_snow_line 848 float 1 0
-U 5e4589a1 frag u_lake_level 852 float 1 0
-U 5e4589a1 frag u_wet 856 float 1 0
-U 5e4589a1 frag u_sea_level 860 float 1 0
-U 5e4589a1 frag u_lake 864 vec4 1 0
-U 5e4589a1 frag u_origin 880 vec2 1 0
-U 5e4589a1 frag u_view 896 mat4 1 0
-U 5e4589a1 frag u_far_split 960 float 1 0
-U 5e4589a1 frag u_far_band 964 float 1 0
+U 5e4589a1 frag u_tp_on 844 float 1 0
+U 5e4589a1 frag u_tp_dims 848 vec4 1 0
+U 5e4589a1 frag u_carpet_on 864 float 1 0
+U 5e4589a1 frag u_snow_line 868 float 1 0
+U 5e4589a1 frag u_lake_level 872 float 1 0
+U 5e4589a1 frag u_wet 876 float 1 0
+U 5e4589a1 frag u_sea_level 880 float 1 0
+U 5e4589a1 frag u_lake 896 vec4 1 0
+U 5e4589a1 frag u_origin 912 vec2 1 0
+U 5e4589a1 frag u_view 928 mat4 1 0
+U 5e4589a1 frag u_far_split 992 float 1 0
+U 5e4589a1 frag u_far_band 996 float 1 0
 T 5e4589a1 u_brdf 2
 T 5e4589a1 u_carpet 3
 T 5e4589a1 u_grass_a 4
@@ -3574,9 +3709,13 @@ T 5e4589a1 u_sunshadow 16
 T 5e4589a1 u_ter_normal 17
 T 5e4589a1 u_tershadow 18
 T 5e4589a1 u_tershadow_aux 19
-T 5e4589a1 u_ts_height 20
+T 5e4589a1 u_tp_h 20
+T 5e4589a1 u_tp_nrm 21
+T 5e4589a1 u_tp_ortho 22
+T 5e4589a1 u_tp_page 23
+T 5e4589a1 u_ts_height 24
 P bf3151c8 terrain.vert tersun.frag 
-B bf3151c8 vert 0 204
+B bf3151c8 vert 0 224
 U bf3151c8 vert u_half 0 float 1 0
 U bf3151c8 vert u_view 16 mat4 1 0
 U bf3151c8 vert u_proj 80 mat4 1 0
@@ -3585,8 +3724,10 @@ U bf3151c8 vert u_cam_pos 160 vec3 1 0
 U bf3151c8 vert u_node 176 vec3 1 0
 U bf3151c8 vert u_morph 192 vec2 1 0
 U bf3151c8 vert u_grid 200 float 1 0
+U bf3151c8 vert u_tp_on 204 float 1 0
+U bf3151c8 vert u_tp_dims 208 vec4 1 0
 I bf3151c8 a_xz 0 vec2
-B bf3151c8 frag 1 904
+B bf3151c8 frag 1 936
 U bf3151c8 frag u_cascade_vp 0 mat4 5 64
 U bf3151c8 frag u_cascade_split 320 float 5 16
 U bf3151c8 frag u_cascade_range 400 float 5 16
@@ -3623,9 +3764,11 @@ U bf3151c8 frag u_time 816 float 1 0
 U bf3151c8 frag u_fog_inscatter 820 float 1 0
 U bf3151c8 frag u_fog_desat 824 float 1 0
 U bf3151c8 frag u_fog_wall 828 float 1 0
-U bf3151c8 frag u_view 832 mat4 1 0
-U bf3151c8 frag u_far_split 896 float 1 0
-U bf3151c8 frag u_far_band 900 float 1 0
+U bf3151c8 frag u_tp_on 832 float 1 0
+U bf3151c8 frag u_tp_dims 848 vec4 1 0
+U bf3151c8 frag u_view 864 mat4 1 0
+U bf3151c8 frag u_far_split 928 float 1 0
+U bf3151c8 frag u_far_band 932 float 1 0
 T bf3151c8 u_brdf 2
 T bf3151c8 u_height 3
 T bf3151c8 u_irradiance 4
@@ -3634,7 +3777,10 @@ T bf3151c8 u_shadow 6
 T bf3151c8 u_ter_normal 7
 T bf3151c8 u_tershadow 8
 T bf3151c8 u_tershadow_aux 9
-T bf3151c8 u_ts_height 10
+T bf3151c8 u_tp_h 10
+T bf3151c8 u_tp_nrm 11
+T bf3151c8 u_tp_page 12
+T bf3151c8 u_ts_height 13
 P 46e2325c water.vert water.frag 
 B 46e2325c vert 0 152
 U 46e2325c vert u_view 0 mat4 1 0
diff --git a/packages/ludic.render3d/shaders/terpage.glsl b/packages/ludic.render3d/shaders/terpage.glsl
new file mode 100644
index 00000000..1bde1a7e
--- /dev/null
+++ b/packages/ludic.render3d/shaders/terpage.glsl
@@ -0,0 +1,121 @@
+// terpage.glsl - the terrain maps read through a page table of fine tiles, over a coarse map.
+//
+// THE REFERENCE COPY. Nothing prepends this file: a stage is assembled from its variant's
+// defines, wind.glsl, and for a fragment stage noise.glsl and lighting.glsl, and there is no
+// #include - so each shader that reads the ground carries the sections it needs, pasted from
+// here, and a change here is a change pasted into every copy (grep TP_HELPERS). Each section
+// has its own guard, so a stage that ends up with two copies still compiles, and a stage only
+// declares the arrays it reads: glslang keeps every declared sampler in the program's layout.
+//
+// Before a paste: TP_FRAGMENT in a fragment stage (its fallbacks keep their implicit level of
+// detail), and TP_HMAP when the stage's height sampler is not u_ts_height (terrain's u_height).
+// The ground normal needs u_ter_normal declared first, the photograph u_ortho.
+//
+// The contract with the runtime: u_tp_page is n x n R32F, slot + 1 for a
+// resident tile and 0 for none; each array layer is a tile with a one-texel border taken from
+// its neighbours, so linear filtering and the B-spline's taps cross a tile edge seamlessly.
+// While paging is on, u_ts_height / u_height, u_ter_normal and u_ortho hold a COARSE whole-map
+// level; while it is off they hold today's full maps and every helper here is today's read.
+
+// ---- the page table ----------------------------------------------------------------------
+#ifndef TP_HELPERS
+#define TP_HELPERS
+uniform sampler2D u_tp_page;   // R32F, a texel a tile: slot + 1, 0 = not resident
+uniform float u_tp_on;         // 1 while paging; 0 reads the whole maps exactly as before
+uniform vec4 u_tp_dims;        // tiles a side, height texels a tile, photo texels a tile, full height res
+// the layer holding a full-map uv, or -1: paging off, off the map, or not resident
+float tpSlot(vec2 uv) {
+  if (u_tp_on < 0.5 || uv.x < 0.0 || uv.y < 0.0 || uv.x >= 1.0 || uv.y >= 1.0) return -1.0;
+  ivec2 t = min(ivec2(floor(uv * u_tp_dims.x)), ivec2(int(u_tp_dims.x) - 1));
+  return texelFetch(u_tp_page, t, 0).r - 1.0;
+}
+// a full-map uv inside its tile's layer of k texels a side, past the one-texel border
+vec2 tpUV(vec2 uv, float k) { return (1.0 + fract(uv * u_tp_dims.x) * k) / (k + 2.0); }
+#endif
+
+// ---- height (vertex and mesh stages) -----------------------------------------------------
+#ifndef TP_HEIGHT
+#define TP_HEIGHT
+#ifndef TP_HMAP
+#define TP_HMAP u_ts_height
+#endif
+uniform sampler2DArray u_tp_h;
+// bilinear height, fine where a tile is resident. Outside a fragment stage texture() IS level 0
+// (glslang emits the same explicit-lod sample), so this is the old read bit for bit.
+float terHeight(vec2 uv) {
+  float s = tpSlot(uv);
+  if (s >= 0.0) return textureLod(u_tp_h, vec3(tpUV(uv, u_tp_dims.y), s), 0.0).r;
+  return textureLod(TP_HMAP, uv, 0.0).r;
+}
+// The B-spline through four bilinear taps (heightSmooth). Paging on, the texel is the FULL
+// map's - the coarse map's own size would halve the surface's detail - and each tap finds its
+// own tile, so a patch straddling two tiles, or a tile and the coarse map, stays one surface.
+float terHeightSmooth(vec2 uv) {
+  vec2 res = u_tp_on > 0.5 ? vec2(u_tp_dims.w) : vec2(textureSize(TP_HMAP, 0));
+  vec2 t = uv * res - 0.5;
+  vec2 f = fract(t);
+  vec2 i = floor(t);
+  vec2 w0 = (1.0 - f) * (1.0 - f) * (1.0 - f) / 6.0;
+  vec2 w1 = (4.0 - 6.0 * f * f + 3.0 * f * f * f) / 6.0;
+  vec2 w3 = f * f * f / 6.0;
+  vec2 w2 = 1.0 - w0 - w1 - w3;
+  vec2 s0 = w0 + w1, s1 = w2 + w3;
+  vec2 o0 = (i - 1.0 + w1 / s0 + 0.5) / res;
+  vec2 o1 = (i + 1.0 + w3 / s1 + 0.5) / res;
+  return (terHeight(vec2(o0.x, o0.y)) * s0.x + terHeight(vec2(o1.x, o0.y)) * s1.x) * s0.y
+       + (terHeight(vec2(o0.x, o1.y)) * s0.x + terHeight(vec2(o1.x, o1.y)) * s1.x) * s1.y;
+}
+#endif
+
+// ---- the baked normal (x, z; y is rebuilt by the caller) ----------------------------------
+#ifndef TP_NORMAL
+#define TP_NORMAL
+uniform sampler2DArray u_tp_nrm;
+vec2 terNormalXZ(vec2 uv) {
+#ifdef TP_FRAGMENT
+  if (u_tp_on < 0.5) return texture(u_ter_normal, uv).rg;
+  // taken before the per-pixel branch: a neighbour on another tile must not decide the level
+  vec2 dx = dFdx(uv), dy = dFdy(uv);
+#endif
+  float s = tpSlot(uv);
+  if (s >= 0.0) return textureLod(u_tp_nrm, vec3(tpUV(uv, u_tp_dims.y), s), 0.0).rg;
+#ifdef TP_FRAGMENT
+  return textureGrad(u_ter_normal, uv, dx, dy).rg;
+#else
+  return textureLod(u_ter_normal, uv, 0.0).rg;
+#endif
+}
+#endif
+
+// ---- the photograph ----------------------------------------------------------------------
+#ifndef TP_ORTHO
+#define TP_ORTHO
+uniform sampler2DArray u_tp_ortho;
+// level-0 colour, fine where a tile is resident; the coarse map (with its mips) elsewhere
+vec3 terOrtho(vec2 uv) {
+#ifdef TP_FRAGMENT
+  if (u_tp_on < 0.5) return texture(u_ortho, uv).rgb;
+  vec2 dx = dFdx(uv), dy = dFdy(uv);
+#endif
+  float s = tpSlot(uv);
+  if (s >= 0.0) return textureLod(u_tp_ortho, vec3(tpUV(uv, u_tp_dims.z), s), 0.0).rgb;
+#ifdef TP_FRAGMENT
+  return textureGrad(u_ortho, uv, dx, dy).rgb;
+#else
+  return textureLod(u_ortho, uv, 0.0).rgb;
+#endif
+}
+#endif
+
+// ---- the photograph's measures (declares no sampler: a stage reading u_ortho blurred needs no tile)
+#ifndef TP_ORTHO_LOD
+#define TP_ORTHO_LOD
+// the FULL photograph's texels a side, for filters that weigh by the texel (orthoSmooth)
+vec2 tpOrthoRes() { return u_tp_on > 0.5 ? vec2(u_tp_dims.z * u_tp_dims.x) : vec2(textureSize(u_ortho, 0)); }
+// A blurred read (textureLod 1..2.5) names a level of the FULL photograph; on the coarse map
+// the same detail is that many levels lower, so the ground's far colour does not soften.
+float tpOrthoLod(float lod) {
+  if (u_tp_on < 0.5) return lod;
+  return max(lod - log2(u_tp_dims.z * u_tp_dims.x / float(textureSize(u_ortho, 0).x)), 0.0);
+}
+#endif
diff --git a/packages/ludic.render3d/shaders/terrain.frag b/packages/ludic.render3d/shaders/terrain.frag
index e6816fe9..f010880f 100644
--- a/packages/ludic.render3d/shaders/terrain.frag
+++ b/packages/ludic.render3d/shaders/terrain.frag
@@ -6,16 +6,84 @@ out vec4 o_color;
 #define ridged(p, o) 0.3
 #define gnoise(p) 0.1
 #endif
-uniform sampler2D u_height;
+// no u_height here: the vertex stage reads the ground, and every declared sampler counts
+// against the stage's limit (MoltenVK) whether it is read or not
 // the baked terrain normal: x and z in RG16F, y rebuilt (a terrain normal always points up)
 uniform sampler2D u_ter_normal;
-vec3 terNormal(vec2 uv) { vec2 xz = texture(u_ter_normal, uv).rg;  return vec3(xz.x, sqrt(max(1.0 - dot(xz, xz), 0.0)), xz.y); }
 uniform float u_half;
 uniform float u_texel;               // height-map texel size in uv
 uniform sampler2D u_grass_d; uniform sampler2D u_grass_n; uniform sampler2D u_grass_a;
 uniform sampler2D u_ortho;
 uniform sampler2D u_sunshadow;   // the sun visibility this pixel already has (tersun.frag)
 uniform float u_ortho_on;
+#define TP_FRAGMENT
+// terpage.glsl, pasted (the reference copy and its rules are there)
+// ---- the page table ----------------------------------------------------------------------
+#ifndef TP_HELPERS
+#define TP_HELPERS
+uniform sampler2D u_tp_page;   // R32F, a texel a tile: slot + 1, 0 = not resident
+uniform float u_tp_on;         // 1 while paging; 0 reads the whole maps exactly as before
+uniform vec4 u_tp_dims;        // tiles a side, height texels a tile, photo texels a tile, full height res
+// the layer holding a full-map uv, or -1: paging off, off the map, or not resident
+float tpSlot(vec2 uv) {
+  if (u_tp_on < 0.5 || uv.x < 0.0 || uv.y < 0.0 || uv.x >= 1.0 || uv.y >= 1.0) return -1.0;
+  ivec2 t = min(ivec2(floor(uv * u_tp_dims.x)), ivec2(int(u_tp_dims.x) - 1));
+  return texelFetch(u_tp_page, t, 0).r - 1.0;
+}
+// a full-map uv inside its tile's layer of k texels a side, past the one-texel border
+vec2 tpUV(vec2 uv, float k) { return (1.0 + fract(uv * u_tp_dims.x) * k) / (k + 2.0); }
+#endif
+// ---- the baked normal (x, z; y is rebuilt by the caller) ----------------------------------
+#ifndef TP_NORMAL
+#define TP_NORMAL
+uniform sampler2DArray u_tp_nrm;
+vec2 terNormalXZ(vec2 uv) {
+#ifdef TP_FRAGMENT
+  if (u_tp_on < 0.5) return texture(u_ter_normal, uv).rg;
+  // taken before the per-pixel branch: a neighbour on another tile must not decide the level
+  vec2 dx = dFdx(uv), dy = dFdy(uv);
+#endif
+  float s = tpSlot(uv);
+  if (s >= 0.0) return textureLod(u_tp_nrm, vec3(tpUV(uv, u_tp_dims.y), s), 0.0).rg;
+#ifdef TP_FRAGMENT
+  return textureGrad(u_ter_normal, uv, dx, dy).rg;
+#else
+  return textureLod(u_ter_normal, uv, 0.0).rg;
+#endif
+}
+#endif
+// ---- the photograph ----------------------------------------------------------------------
+#ifndef TP_ORTHO
+#define TP_ORTHO
+uniform sampler2DArray u_tp_ortho;
+// level-0 colour, fine where a tile is resident; the coarse map (with its mips) elsewhere
+vec3 terOrtho(vec2 uv) {
+#ifdef TP_FRAGMENT
+  if (u_tp_on < 0.5) return texture(u_ortho, uv).rgb;
+  vec2 dx = dFdx(uv), dy = dFdy(uv);
+#endif
+  float s = tpSlot(uv);
+  if (s >= 0.0) return textureLod(u_tp_ortho, vec3(tpUV(uv, u_tp_dims.z), s), 0.0).rgb;
+#ifdef TP_FRAGMENT
+  return textureGrad(u_ortho, uv, dx, dy).rgb;
+#else
+  return textureLod(u_ortho, uv, 0.0).rgb;
+#endif
+}
+#endif
+// ---- the photograph's measures (declares no sampler: a stage reading u_ortho blurred needs no tile)
+#ifndef TP_ORTHO_LOD
+#define TP_ORTHO_LOD
+// the FULL photograph's texels a side, for filters that weigh by the texel (orthoSmooth)
+vec2 tpOrthoRes() { return u_tp_on > 0.5 ? vec2(u_tp_dims.z * u_tp_dims.x) : vec2(textureSize(u_ortho, 0)); }
+// A blurred read (textureLod 1..2.5) names a level of the FULL photograph; on the coarse map
+// the same detail is that many levels lower, so the ground's far colour does not soften.
+float tpOrthoLod(float lod) {
+  if (u_tp_on < 0.5) return lod;
+  return max(lod - log2(u_tp_dims.z * u_tp_dims.x / float(textureSize(u_ortho, 0).x)), 0.0);
+}
+#endif
+vec3 terNormal(vec2 uv) { vec2 xz = terNormalXZ(uv);  return vec3(xz.x, sqrt(max(1.0 - dot(xz, xz), 0.0)), xz.y); }
 uniform sampler2D u_rock_d;  uniform sampler2D u_rock_n;  uniform sampler2D u_rock_a;
 uniform sampler2D u_snow_d;  uniform sampler2D u_carpet;   // the clump cards baked straight down (alpha = coverage)
 uniform float u_carpet_on;
@@ -44,7 +112,7 @@ uniform vec2 u_origin;           // world offset of the terrain grid
 // applied inside sunShadow() for every receiver in the scene.
 // bicubic (B-spline) sample through four bilinear taps: the 10 m photo pixels stop reading as squares
 vec3 orthoSmooth(vec2 uv) {
-  vec2 res = vec2(textureSize(u_ortho, 0));
+  vec2 res = tpOrthoRes();   // the full photograph's texel, whichever map is bound
   vec2 t = uv * res - 0.5;
   vec2 f = fract(t);
   vec2 i = floor(t);
@@ -52,8 +120,8 @@ vec3 orthoSmooth(vec2 uv) {
   vec2 w3 = f * f * f / 6.0, w2 = 1.0 - w0 - w1 - w3;
   vec2 s0 = w0 + w1, s1 = w2 + w3;
   vec2 o0 = (i - 1.0 + w1 / s0 + 0.5) / res, o1 = (i + 1.0 + w3 / s1 + 0.5) / res;
-  return (texture(u_ortho, vec2(o0.x, o0.y)).rgb * s0.x + texture(u_ortho, vec2(o1.x, o0.y)).rgb * s1.x) * s0.y
-       + (texture(u_ortho, vec2(o0.x, o1.y)).rgb * s0.x + texture(u_ortho, vec2(o1.x, o1.y)).rgb * s1.x) * s1.y;
+  return (terOrtho(vec2(o0.x, o0.y)) * s0.x + terOrtho(vec2(o1.x, o0.y)) * s1.x) * s0.y
+       + (terOrtho(vec2(o0.x, o1.y)) * s0.x + terOrtho(vec2(o1.x, o1.y)) * s1.x) * s1.y;
 }
 uniform mat4 u_view;
 
@@ -210,7 +278,7 @@ vec3 dbg_n; vec3 dbg_alb; float dbg_shadow; vec3 dbg_mat;
 float fbmC(bool cheap, vec2 q, int o) { return cheap ? 0.0 : fbm(q, o); }
 float ridgedC(bool cheap, vec2 q, int o) { return cheap ? 0.35 : ridged(q, o); }
 float gnoiseC(bool cheap, vec2 q) { return cheap ? 0.0 : gnoise(q); }
-vec3 orthoC(bool cheap, vec2 uv) { return cheap ? textureLod(u_ortho, uv, 1.0).rgb : orthoSmooth(uv); }
+vec3 orthoC(bool cheap, vec2 uv) { return cheap ? textureLod(u_ortho, uv, tpOrthoLod(1.0)).rgb : orthoSmooth(uv); }
 vec4 carpetC(bool cheap, vec2 uv, vec2 dx, vec2 dy) { return cheap ? textureGrad(u_carpet, uv, dx, dy) : sampleCarpet(uv, dx, dy); }
 void matC(bool cheap, sampler2D d, sampler2D nm, sampler2D am, vec2 uv, vec2 dx, vec2 dy, out vec3 alb, out vec3 nrm, out vec3 arm) {
   if (cheap) samplePlain(d, nm, am, uv, dx, dy, alb, nrm, arm); else sampleMat(d, nm, am, uv, dx, dy, alb, nrm, arm);
@@ -267,14 +335,14 @@ vec3 groundShade(vec3 p, vec3 N, float slope, float dist, float viewDepth, bool
   if (orthoOn) {
     oc = orthoC(cheap, v_huv);
     // (classified from a ~40 m blur: thresholding the raw 10 m pixels drew hard squares)
-    vec3 ocf = textureLod(u_ortho, v_huv, 2.0).rgb;
+    vec3 ocf = textureLod(u_ortho, v_huv, tpOrthoLod(2.0)).rgb;
     float gx = ocf.g - max(ocf.r, ocf.b);
     // (the photograph is sampled linear: sRGB 72 is 0.06, 92 is 0.11)
     forestW = smoothstep(0.12, 0.06, max(ocf.r, max(ocf.g, ocf.b))) * smoothstep(0.004, 0.012, gx) * smoothstep(waterLine(p.xz) + 0.8, waterLine(p.xz) + 1.8, p.y);
     // Classify from a ~60 m blur, never from the pixels: the survey's 10 m pixels carry
     // a foot trail as a broken line of bare ground, and thresholding them painted it
     // across the meadow as tan dashes (and, on the CPU, lined boulders up along it).
-    vec3 ocl = textureLod(u_ortho, v_huv, 2.5).rgb;
+    vec3 ocl = textureLod(u_ortho, v_huv, tpOrthoLod(2.5)).rgb;
     float mxc = max(ocl.r, max(ocl.g, ocl.b)), mnc = min(ocl.r, min(ocl.g, ocl.b));
     float greenEx = ocl.g - max(ocl.r, ocl.b);
     screeC = smoothstep(0.008, -0.002, greenEx) * smoothstep(0.06, 0.12, mxc) * (1.0 - smoothstep(0.55, 0.75, mxc)) * smoothstep(waterLine(p.xz) + 0.2, waterLine(p.xz) + 1.2, p.y);
diff --git a/packages/ludic.render3d/shaders/terrain.vert b/packages/ludic.render3d/shaders/terrain.vert
index f348348d..6a0faea3 100644
--- a/packages/ludic.render3d/shaders/terrain.vert
+++ b/packages/ludic.render3d/shaders/terrain.vert
@@ -14,8 +14,42 @@ uniform vec3 u_cam_pos;
 uniform vec3 u_node;          // x0, z0, size (m)
 uniform vec2 u_morph;         // distance where the morph starts, and where it is complete
 uniform float u_grid;         // cells per patch side
-float heightSmooth(sampler2D tex, vec2 uv) {
-  vec2 res = vec2(textureSize(tex, 0));
+#define TP_HMAP u_height
+// terpage.glsl, pasted (the reference copy and its rules are there)
+// ---- the page table ----------------------------------------------------------------------
+#ifndef TP_HELPERS
+#define TP_HELPERS
+uniform sampler2D u_tp_page;   // R32F, a texel a tile: slot + 1, 0 = not resident
+uniform float u_tp_on;         // 1 while paging; 0 reads the whole maps exactly as before
+uniform vec4 u_tp_dims;        // tiles a side, height texels a tile, photo texels a tile, full height res
+// the layer holding a full-map uv, or -1: paging off, off the map, or not resident
+float tpSlot(vec2 uv) {
+  if (u_tp_on < 0.5 || uv.x < 0.0 || uv.y < 0.0 || uv.x >= 1.0 || uv.y >= 1.0) return -1.0;
+  ivec2 t = min(ivec2(floor(uv * u_tp_dims.x)), ivec2(int(u_tp_dims.x) - 1));
+  return texelFetch(u_tp_page, t, 0).r - 1.0;
+}
+// a full-map uv inside its tile's layer of k texels a side, past the one-texel border
+vec2 tpUV(vec2 uv, float k) { return (1.0 + fract(uv * u_tp_dims.x) * k) / (k + 2.0); }
+#endif
+// ---- height (vertex and mesh stages) -----------------------------------------------------
+#ifndef TP_HEIGHT
+#define TP_HEIGHT
+#ifndef TP_HMAP
+#define TP_HMAP u_ts_height
+#endif
+uniform sampler2DArray u_tp_h;
+// bilinear height, fine where a tile is resident. Outside a fragment stage texture() IS level 0
+// (glslang emits the same explicit-lod sample), so this is the old read bit for bit.
+float terHeight(vec2 uv) {
+  float s = tpSlot(uv);
+  if (s >= 0.0) return textureLod(u_tp_h, vec3(tpUV(uv, u_tp_dims.y), s), 0.0).r;
+  return textureLod(TP_HMAP, uv, 0.0).r;
+}
+// The B-spline through four bilinear taps (heightSmooth). Paging on, the texel is the FULL
+// map's - the coarse map's own size would halve the surface's detail - and each tap finds its
+// own tile, so a patch straddling two tiles, or a tile and the coarse map, stays one surface.
+float terHeightSmooth(vec2 uv) {
+  vec2 res = u_tp_on > 0.5 ? vec2(u_tp_dims.w) : vec2(textureSize(TP_HMAP, 0));
   vec2 t = uv * res - 0.5;
   vec2 f = fract(t);
   vec2 i = floor(t);
@@ -26,23 +60,24 @@ float heightSmooth(sampler2D tex, vec2 uv) {
   vec2 s0 = w0 + w1, s1 = w2 + w3;
   vec2 o0 = (i - 1.0 + w1 / s0 + 0.5) / res;
   vec2 o1 = (i + 1.0 + w3 / s1 + 0.5) / res;
-  return (texture(tex, vec2(o0.x, o0.y)).r * s0.x + texture(tex, vec2(o1.x, o0.y)).r * s1.x) * s0.y
-       + (texture(tex, vec2(o0.x, o1.y)).r * s0.x + texture(tex, vec2(o1.x, o1.y)).r * s1.x) * s1.y;
+  return (terHeight(vec2(o0.x, o0.y)) * s0.x + terHeight(vec2(o1.x, o0.y)) * s1.x) * s0.y
+       + (terHeight(vec2(o0.x, o1.y)) * s0.x + terHeight(vec2(o1.x, o1.y)) * s1.x) * s1.y;
 }
+#endif
 out vec3 v_wpos;
 out vec2 v_huv;
 void main() {
   vec2 grid = a_xz * u_grid;
   vec2 xz = u_node.xy + a_xz * u_node.z;
   vec2 huv = (xz - u_origin) / (2.0 * u_half) + 0.5;
-  float h0 = texture(u_height, huv).r;
+  float h0 = terHeight(huv);
   float d = distance(vec3(xz.x, h0, xz.y), u_cam_pos);
   float k = clamp((d - u_morph.x) / max(u_morph.y - u_morph.x, 1.0), 0.0, 1.0);
   vec2 frac2 = fract(grid * 0.5) * 2.0;             // 1 on odd vertices
   grid -= frac2 * k;
   xz = u_node.xy + grid / u_grid * u_node.z;
   huv = (xz - u_origin) / (2.0 * u_half) + 0.5;
-  float h = heightSmooth(u_height, huv);
+  float h = terHeightSmooth(huv);
   vec3 p = vec3(xz.x, h, xz.y);
   v_wpos = p;
   v_huv = huv;
diff --git a/packages/ludic.render3d/shaders/tersun.frag b/packages/ludic.render3d/shaders/tersun.frag
index f11c851b..9085ea63 100644
--- a/packages/ludic.render3d/shaders/tersun.frag
+++ b/packages/ludic.render3d/shaders/tersun.frag
@@ -11,10 +11,47 @@
 in vec3 v_wpos;
 in vec2 v_huv;
 out float o_sh;
-uniform sampler2D u_height;
+// no u_height here: the vertex stage reads the ground, and every declared sampler counts
+// against the stage's limit (MoltenVK) whether it is read or not
 // the baked terrain normal: x and z in RG16F, y rebuilt (a terrain normal always points up)
 uniform sampler2D u_ter_normal;
-vec3 terNormal(vec2 uv) { vec2 xz = texture(u_ter_normal, uv).rg;  return vec3(xz.x, sqrt(max(1.0 - dot(xz, xz), 0.0)), xz.y); }
+#define TP_FRAGMENT
+// terpage.glsl, pasted (the reference copy and its rules are there)
+// ---- the page table ----------------------------------------------------------------------
+#ifndef TP_HELPERS
+#define TP_HELPERS
+uniform sampler2D u_tp_page;   // R32F, a texel a tile: slot + 1, 0 = not resident
+uniform float u_tp_on;         // 1 while paging; 0 reads the whole maps exactly as before
+uniform vec4 u_tp_dims;        // tiles a side, height texels a tile, photo texels a tile, full height res
+// the layer holding a full-map uv, or -1: paging off, off the map, or not resident
+float tpSlot(vec2 uv) {
+  if (u_tp_on < 0.5 || uv.x < 0.0 || uv.y < 0.0 || uv.x >= 1.0 || uv.y >= 1.0) return -1.0;
+  ivec2 t = min(ivec2(floor(uv * u_tp_dims.x)), ivec2(int(u_tp_dims.x) - 1));
+  return texelFetch(u_tp_page, t, 0).r - 1.0;
+}
+// a full-map uv inside its tile's layer of k texels a side, past the one-texel border
+vec2 tpUV(vec2 uv, float k) { return (1.0 + fract(uv * u_tp_dims.x) * k) / (k + 2.0); }
+#endif
+// ---- the baked normal (x, z; y is rebuilt by the caller) ----------------------------------
+#ifndef TP_NORMAL
+#define TP_NORMAL
+uniform sampler2DArray u_tp_nrm;
+vec2 terNormalXZ(vec2 uv) {
+#ifdef TP_FRAGMENT
+  if (u_tp_on < 0.5) return texture(u_ter_normal, uv).rg;
+  // taken before the per-pixel branch: a neighbour on another tile must not decide the level
+  vec2 dx = dFdx(uv), dy = dFdy(uv);
+#endif
+  float s = tpSlot(uv);
+  if (s >= 0.0) return textureLod(u_tp_nrm, vec3(tpUV(uv, u_tp_dims.y), s), 0.0).rg;
+#ifdef TP_FRAGMENT
+  return textureGrad(u_ter_normal, uv, dx, dy).rg;
+#else
+  return textureLod(u_ter_normal, uv, 0.0).rg;
+#endif
+}
+#endif
+vec3 terNormal(vec2 uv) { vec2 xz = terNormalXZ(uv);  return vec3(xz.x, sqrt(max(1.0 - dot(xz, xz), 0.0)), xz.y); }
 uniform mat4 u_view;
 uniform float u_far_split;
 uniform float u_far_band;