render3d: the terrain's questions never page - ter_h and ter_o read a resident tile in place and any other through the file scratch (heights and now the photograph, four tiles each, sized when the tiles open, forgotten when they close), so terrain_height, _smooth, terrain_ortho, the chunk heightfields, ground_fill, grass, water and shadow no longer take slots or move the clock. Only the loaders page: tp_fill reads through tt_h_load / tt_n_load / tt_o_load, and terrain_tiles_prefetch as before. terrain_height_file is now terrain_height, kept as the name callers wrote against. No answer changes: every read was already the whole copy's texel. tests/height_file_test: heights and photograph equal the texels written, resident or not; a whole-map sweep of the questions, and a ground layer's fill over the map (a one-layer LGD2 written in the test), leave the slots, their contents, the clock and the read counts unchanged
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
parent
2288feeb59
commit
130b9091d1
6 changed files with 249 additions and 101 deletions
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@ -889,10 +889,13 @@ export state Render3dState {
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tt_reads: int = 0 # tiles read from the file, over the run and this frame
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tt_frame_reads: int = 0
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tt_warned: bool = false
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tf_raw: []byte = buffer(2048) # terrain_height_file's own: one tile's bytes as read,
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tf_raw: []byte = buffer(2048) # the questions' file scratch (terrain_height_file.ludic): a tile's bytes as read,
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tf_h: floats = floats(4096) # ... TF_KEEP tiles' heights, and which (tile + 1, 0: none)
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tf_tile: words = words(4)
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tf_next: int = 0
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tfo_px: words = words(4) # ... and TF_KEEP tiles' photograph (sized when a map opens), and which
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tfo_tile: words = words(4)
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tfo_next: int = 0
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tp_on: bool = false # the GPU pages the fine tiles round the camera (terrain_pages.ludic)
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tp_page_tex: int = 0 # R32F tt_n a side: slot + 1 of each resident tile, 0 = the coarse level
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tp_h_tex: int = 0 # the pool: heights, normals and photograph, a layer a slot
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@ -1,35 +1,11 @@
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# terrain_height_file.ludic — terrain_height's exact answer that never pages: a tile not resident is
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# read from the file into a scratch of this query's own, so who asks and in what order never changes
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# which tiles the cache holds (and so never moves what is drawn from it). For wide sweeps at boot.
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# terrain_height_file.ludic — the file scratch the terrain's questions read a tile through when it is not
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# resident (ter_h, ter_o), so a question never takes a slot: who asks and in what order leaves the cache
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# as the loaders put it. terrain_height_file stays as the name callers wrote against; it is terrain_height.
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const TF_KEEP: int = 4 # tiles the scratch keeps: a texel square at a corner spans four
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export function terrain_height_file(render3d_st: mut Render3dState, x: float, z: float) -> float {
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if not ter_present(render3d_st) { return 0.0 }
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let scale = float(TERRAIN_RES) / float(render3d_st.TERRAIN_HALF * 2)
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let fx = (x - render3d_st.ter_ox + float(render3d_st.TERRAIN_HALF)) * scale
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let fz = (z - render3d_st.ter_oz + float(render3d_st.TERRAIN_HALF)) * scale
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let ix = min(max(int(Math.floor(fx)), 0), TERRAIN_RES - 2)
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let iz = min(max(int(Math.floor(fz)), 0), TERRAIN_RES - 2)
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let tx = Math.clamp(fx - float(ix), 0.0, 1.0)
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let tz = Math.clamp(fz - float(iz), 0.0, 1.0)
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let h00 = tf_texel(render3d_st, ix, iz)
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let h10 = tf_texel(render3d_st, ix + 1, iz)
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let h01 = tf_texel(render3d_st, ix, iz + 1)
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let h11 = tf_texel(render3d_st, ix + 1, iz + 1)
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return Math.lerp(Math.lerp(h00, h10, tx), Math.lerp(h01, h11, tx), tz)
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}
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export function terrain_height_file(render3d_st: mut Render3dState, x: float, z: float) -> float { return terrain_height(render3d_st, x, z) }
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# a height texel: the whole copy's, a resident tile's, else the scratch's (read from the file there)
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function tf_texel(render3d_st: mut Render3dState, tx: int, tz: int) -> float {
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if render3d_st.ter_heights != null { return render3d_st.ter_heights[tz * TERRAIN_RES + tx] }
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let t = (tz >> TT_SHIFT) * render3d_st.tt_n + (tx >> TT_SHIFT)
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let at = (tz & TT_MASK) * TT_TEX + (tx & TT_MASK)
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let s = render3d_st.tt_slot_of[t]
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if s >= 0 { return render3d_st.tt_h[s * TT_TEX * TT_TEX + at] }
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return render3d_st.tf_h[tf_entry(render3d_st, t) * TT_TEX * TT_TEX + at]
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}
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# the scratch entry holding tile t, read from the file (as tt_decode reads its heights) when none does
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# the scratch entry holding tile t's heights, read from the file (as tt_decode reads them) when none does
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function tf_entry(render3d_st: mut Render3dState, t: int) -> int {
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for e in 0 .. TF_KEEP { if render3d_st.tf_tile[e] == t + 1 { return e } }
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let e = render3d_st.tf_next
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@ -45,8 +21,39 @@ function tf_entry(render3d_st: mut Render3dState, t: int) -> int {
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return e
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}
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# ... and of its photograph (the scratch sized to the map's tiles when they were opened, tf_size)
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function tfo_entry(render3d_st: mut Render3dState, t: int) -> int {
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for e in 0 .. TF_KEEP { if render3d_st.tfo_tile[e] == t + 1 { return e } }
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let e = render3d_st.tfo_next
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render3d_st.tfo_next = (e + 1) % TF_KEEP
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let o2 = render3d_st.tt_oside * render3d_st.tt_oside
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let raw = render3d_st.tf_raw
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file_seek(render3d_st.tt_file, render3d_st.tt_ooff + t * o2 * 3, 0)
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file_read(render3d_st.tt_file, data_of(raw), o2 * 3)
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for i in 0 .. o2 { render3d_st.tfo_px[e * o2 + i] = (raw[i * 3] << 16) | (raw[i * 3 + 1] << 8) | raw[i * 3 + 2] }
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render3d_st.tfo_tile[e] = t + 1
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return e
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}
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# the photograph's scratch and the read buffer made for `side` texels a tile, once a size
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@alloc_ok("a map being loaded: the questions' photograph scratch, once a size")
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function tf_size(render3d_st: mut Render3dState, side: int) -> void {
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if len(render3d_st.tfo_px) < TF_KEEP * side * side {
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free(render3d_st.tfo_px)
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render3d_st.tfo_px = words(TF_KEEP * side * side)
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}
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if len(render3d_st.tf_raw) < side * side * 3 {
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free(render3d_st.tf_raw)
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render3d_st.tf_raw = buffer(side * side * 3)
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}
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}
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# the scratch forgotten: the tiles' file closed or replaced (another map's tile t is another tile)
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function tf_forget(render3d_st: mut Render3dState) -> void {
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for e in 0 .. TF_KEEP { render3d_st.tf_tile[e] = 0 }
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render3d_st.tf_next = 0
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for e in 0 .. TF_KEEP {
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render3d_st.tf_tile[e] = 0
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render3d_st.tfo_tile[e] = 0
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}
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render3d_st.tf_next = 0
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render3d_st.tfo_next = 0
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}
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@ -55,6 +55,7 @@ function tt_pools(render3d_st: mut Render3dState, n: int, side: int) -> void {
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if render3d_st.tt_tile_in == null { render3d_st.tt_tile_in = words(TT_SLOTS); render3d_st.tt_ref = words(TT_SLOTS) }
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for s in 0 .. TT_SLOTS { render3d_st.tt_tile_in[s] = -1; render3d_st.tt_ref[s] = 0 }
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render3d_st.tt_hand = 0
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tf_size(render3d_st, side)
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}
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# tile t's heights, normals and photograph decoded into slot s: exactly the values ltt2_write put back
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@ -18,8 +18,8 @@ function tp_fill(render3d_st: mut Render3dState, t: int, base: int, k: int) -> v
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for a in 0 .. hs {
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let tx = min(max(i0 + a, 0), TERRAIN_RES - 1)
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let o = (b * hs + a) * 4
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Vk.put_i32(p, ho + o, float_bits(ter_h(render3d_st, tx, tz)))
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Vk.put_i32(p, no + o, ter_n(render3d_st, tx, tz))
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Vk.put_i32(p, ho + o, float_bits(tt_h_load(render3d_st, tx, tz)))
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Vk.put_i32(p, no + o, tt_n_load(render3d_st, tx, tz))
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}
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}
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tp_fill_ortho(render3d_st, t, base + n * n * 4 + 2 * TP_BUDGET * hb, k)
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@ -38,7 +38,7 @@ function tp_fill_ortho(render3d_st: mut Render3dState, t: int, at: int, k: int)
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for b in 0 .. os {
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let pz = min(max(j0 + b, 0), top)
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for a in 0 .. os {
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let v = ter_o(render3d_st, min(max(i0 + a, 0), top), pz)
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let v = tt_o_load(render3d_st, min(max(i0 + a, 0), top), pz)
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let o = o0 + (b * os + a) * 4
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p[o] = (v >> 16) & 255
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p[o + 1] = (v >> 8) & 255
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@ -17,16 +17,41 @@ export function terrain_tiles_to(render3d_st: mut Render3dState, dir: string, ke
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render3d_st.tt_key = intern(key)
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}
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# the height texel (tx, tz): the whole copy's, or its tile's
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# The texels as every question reads them: the whole copy, a resident tile, else the file through a
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# scratch of the question's own (terrain_height_file.ludic). A question never takes a slot or moves the
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# clock, so who asks and in what order leaves the cache as the loaders (tt_*_load) put it.
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# the height texel (tx, tz)
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function ter_h(render3d_st: mut Render3dState, tx: int, tz: int) -> float {
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if render3d_st.ter_heights != null { return render3d_st.ter_heights[tz * TERRAIN_RES + tx] }
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let t = (tz >> TT_SHIFT) * render3d_st.tt_n + (tx >> TT_SHIFT)
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if render3d_st.tt_file == null or t < 0 or t >= len(render3d_st.tt_slot_of) { return 0.0 }
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let at = (tz & TT_MASK) * TT_TEX + (tx & TT_MASK)
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let s = render3d_st.tt_slot_of[t]
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if s >= 0 { return render3d_st.tt_h[s * TT_TEX * TT_TEX + at] }
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return render3d_st.tf_h[tf_entry(render3d_st, t) * TT_TEX * TT_TEX + at]
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}
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# the photograph's texel (px, pz) as 0xRRGGBB
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function ter_o(render3d_st: mut Render3dState, px: int, pz: int) -> int {
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let side = render3d_st.tt_oside
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if side == 0 or render3d_st.tt_file == null { return 0 }
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let t = (pz / side) * render3d_st.tt_n + (px / side)
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if t < 0 or t >= len(render3d_st.tt_slot_of) { return 0 }
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let at = (pz % side) * side + (px % side)
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let s = render3d_st.tt_slot_of[t]
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if s >= 0 { return render3d_st.tt_o[s * side * side + at] }
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return render3d_st.tfo_px[tfo_entry(render3d_st, t) * side * side + at]
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}
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# ---- the loaders' reads: the GPU's pages fill from these, so what they need is kept resident ----
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function tt_h_load(render3d_st: mut Render3dState, tx: int, tz: int) -> float {
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if render3d_st.ter_heights != null { return render3d_st.ter_heights[tz * TERRAIN_RES + tx] }
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let s = tt_slot(render3d_st, (tz >> TT_SHIFT) * render3d_st.tt_n + (tx >> TT_SHIFT))
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if s < 0 { return 0.0 }
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return render3d_st.tt_h[s * TT_TEX * TT_TEX + (tz & TT_MASK) * TT_TEX + (tx & TT_MASK)]
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}
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# the photograph's texel (px, pz) as 0xRRGGBB
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function ter_o(render3d_st: mut Render3dState, px: int, pz: int) -> int {
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function tt_o_load(render3d_st: mut Render3dState, px: int, pz: int) -> int {
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let side = render3d_st.tt_oside
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if side == 0 { return 0 }
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let s = tt_slot(render3d_st, (pz / side) * render3d_st.tt_n + (px / side))
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@ -35,7 +60,7 @@ function ter_o(render3d_st: mut Render3dState, px: int, pz: int) -> int {
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}
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# the baked normal at height texel (tx, tz): x and z as two halves in a word (RG16F), for the GPU's tiles
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function ter_n(render3d_st: mut Render3dState, tx: int, tz: int) -> int {
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function tt_n_load(render3d_st: mut Render3dState, tx: int, tz: int) -> int {
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let s = tt_slot(render3d_st, (tz >> TT_SHIFT) * render3d_st.tt_n + (tx >> TT_SHIFT))
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if s < 0 { return 0 }
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return render3d_st.tt_nm[s * TT_TEX * TT_TEX + (tz & TT_MASK) * TT_TEX + (tx & TT_MASK)]
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@ -44,7 +69,7 @@ function ter_n(render3d_st: mut Render3dState, tx: int, tz: int) -> int {
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# is there a height field to ask at all (a plate has none)
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function ter_present(render3d_st: Render3dState) -> bool { return render3d_st.ter_heights != null or render3d_st.tt_file != null }
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# the slot tile t is in, read from the file first when it is not
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# the slot tile t is in, read from the file first when it is not: the loaders' alone
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function tt_slot(render3d_st: mut Render3dState, t: int) -> int {
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if render3d_st.tt_file == null or t < 0 or t >= len(render3d_st.tt_slot_of) { return -1 }
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let s = render3d_st.tt_slot_of[t]
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@ -1,35 +1,64 @@
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# height_file_test.ludic - terrain_height_file against terrain_height over a tiles file written here (no
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# device): the same answer to the bit, resident or not, and a sweep of the whole map leaves the page
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# cache - its slots, what they hold and the clock - exactly as it was
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# height_file_test.ludic - the terrain's questions over a tiles file written here (no device): heights and
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# the photograph are the file's texels to the bit, resident or not, and a sweep of the whole map by the
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# questions and by a ground layer's fill leaves the page cache - its slots, what they hold, the clock - as it was
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import "ludic.render3d/r3d.ludic"
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program HeightFileTest {
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numbers float
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# never called: naming Input links the engine's runtime, which render3d's textures stand on
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function links_runtime() -> bool { return Input.key_pressed(0) }
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# an LTT2 file with heights only (no photograph; normals and the coarse level read short, unused here)
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const HF_SIDE: int = 2 # photograph texels a tile a side
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# the u16 written at texel i of tile t, and what texel (tx, tz) decodes to
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function hf_q(t: int, i: int) -> int { return (i * 37 + (i >> 5) * 11 + t * 5) & 65535 }
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function hf_texel(tx: int, tz: int) -> float {
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let n = TERRAIN_RES / TT_TEX
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let t = (tz >> 5) * n + (tx >> 5)
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let q = hf_q(t, (tz & 31) * TT_TEX + (tx & 31))
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return (float(t % 50) * 3.5 - 40.0) + float(q) * (0.01 + float(t % 7) * 0.001)
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}
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# the photograph texel (px, pz) as written
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function hf_rgb(px: int, pz: int) -> int {
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let n = TERRAIN_RES / TT_TEX
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let t = (pz / HF_SIDE) * n + px / HF_SIDE
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let i = (pz % HF_SIDE) * HF_SIDE + px % HF_SIDE
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return (((t * 3 + i) & 255) << 16) | (((t >> 3) & 255) << 8) | (i * 60)
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}
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# an LTT2 file of heights and a photograph (the normals and the coarse level read short, unused here)
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function hf_write(path: string) -> bool {
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let n = TERRAIN_RES / TT_TEX
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let n2 = TT_TEX * TT_TEX
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let o2 = HF_SIDE * HF_SIDE
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let hat = LT_HEAD + n * n * 8
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let size = hat + n * n * n2 * 2
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let oat = hat + n * n * n2 * 2
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let size = oat + n * n * o2 * 3
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let b = buffer(size)
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for k in 0 .. LT_HEAD { b[k] = 0 }
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hf_put(b, 0, LT_MAGIC)
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hf_put(b, 4, LT_VERSION)
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hf_put(b, 8, TT_TEX)
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hf_put(b, 12, n)
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hf_put(b, 16, HF_SIDE)
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hf_put(b, 20, TERRAIN_RES)
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hf_put(b, 24, n * HF_SIDE)
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hf_put(b, 28, TT_COARSE)
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hf_put(b, 32, LT_HEAD)
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for k in 10 .. 15 { hf_put(b, k * 4, size) }
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hf_put(b, 40, size)
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hf_put(b, 44, oat)
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for k in 12 .. 15 { hf_put(b, k * 4, size) }
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for t in 0 .. n * n {
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hf_put(b, LT_HEAD + t * 8, float_bits(float(t % 50) * 3.5 - 40.0))
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hf_put(b, LT_HEAD + t * 8 + 4, float_bits(0.01 + float(t % 7) * 0.001))
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for i in 0 .. n2 {
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let q = (i * 37 + (i >> 5) * 11 + t * 5) & 65535
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b[hat + (t * n2 + i) * 2] = q & 255
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b[hat + (t * n2 + i) * 2 + 1] = q >> 8
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b[hat + (t * n2 + i) * 2] = hf_q(t, i) & 255
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b[hat + (t * n2 + i) * 2 + 1] = hf_q(t, i) >> 8
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}
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for i in 0 .. o2 {
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let c = hf_rgb((t % n) * HF_SIDE + i % HF_SIDE, (t / n) * HF_SIDE + i / HF_SIDE)
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b[oat + (t * o2 + i) * 3] = c >> 16
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b[oat + (t * o2 + i) * 3 + 1] = (c >> 8) & 255
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b[oat + (t * o2 + i) * 3 + 2] = c & 255
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}
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}
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return Fs.write_bytes(path, b, size)
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@ -45,75 +74,98 @@ program HeightFileTest {
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render3d_st.ter_ox = 0.0
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render3d_st.ter_oz = 0.0
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render3d_st.ter_h_scale = 0.0
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render3d_st.ter_o_scale = 0.0
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return tt_open_ltt2(render3d_st, path, 0)
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}
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test "the same answer as terrain_height, whether its tile is resident or not" (render3d_st: mut Render3dState) {
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expect(hf_open(render3d_st, "same"))
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terrain_tiles_prefetch(render3d_st, 1000.0, -500.0, 200.0, 100)
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let pts = floats(2 * 160 * 160)
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let got = floats(160 * 160)
|
||||
for j in 0 .. 160 {
|
||||
for i in 0 .. 160 {
|
||||
let k = j * 160 + i
|
||||
pts[k * 2] = -3000.0 + float(i) * 37.3
|
||||
pts[k * 2 + 1] = -3100.0 + float(j) * 41.7
|
||||
got[k] = terrain_height_file(render3d_st, pts[k * 2], pts[k * 2 + 1])
|
||||
}
|
||||
}
|
||||
var off = 0
|
||||
for k in 0 .. 160 * 160 { if terrain_height(render3d_st, pts[k * 2], pts[k * 2 + 1]) != got[k] { off += 1 } }
|
||||
expect_eq(off, 0)
|
||||
# and again now that terrain_height has paged most of them in
|
||||
for k in 0 .. 160 * 160 { if terrain_height_file(render3d_st, pts[k * 2], pts[k * 2 + 1]) != got[k] { off += 1 } }
|
||||
expect_eq(off, 0)
|
||||
# a texel square across a tile corner, and the map's edges
|
||||
for c in 0 .. 5 {
|
||||
let x = -4096.0 + 64.0 * float(c * 13 + 1) - 1.0
|
||||
let z = -4096.0 + 64.0 * float(c * 7 + 2) - 0.5
|
||||
expect_eq(terrain_height_file(render3d_st, x, z), terrain_height(render3d_st, x, z))
|
||||
}
|
||||
expect_eq(terrain_height_file(render3d_st, -5000.0, 5000.0), terrain_height(render3d_st, -5000.0, 5000.0))
|
||||
# terrain_height's bilinear, over the texels as written
|
||||
function hf_expect(x: float, z: float) -> float {
|
||||
let fx = (x + 4096.0) * float(TERRAIN_RES) / 8192.0
|
||||
let fz = (z + 4096.0) * float(TERRAIN_RES) / 8192.0
|
||||
let ix = min(max(int(Math.floor(fx)), 0), TERRAIN_RES - 2)
|
||||
let iz = min(max(int(Math.floor(fz)), 0), TERRAIN_RES - 2)
|
||||
let tx = Math.clamp(fx - float(ix), 0.0, 1.0)
|
||||
let tz = Math.clamp(fz - float(iz), 0.0, 1.0)
|
||||
let a = Math.lerp(hf_texel(ix, iz), hf_texel(ix + 1, iz), tx)
|
||||
return Math.lerp(a, Math.lerp(hf_texel(ix, iz + 1), hf_texel(ix + 1, iz + 1), tx), tz)
|
||||
}
|
||||
|
||||
test "a sweep of the whole map leaves every slot, what it holds and the clock as they were" (render3d_st: mut Render3dState) {
|
||||
test "heights and the photograph are the file's texels, whether their tile is resident or not" (render3d_st: mut Render3dState) {
|
||||
expect(hf_open(render3d_st, "same"))
|
||||
terrain_tiles_prefetch(render3d_st, 1000.0, -500.0, 200.0, 100)
|
||||
var off = 0
|
||||
for j in 0 .. 160 {
|
||||
for i in 0 .. 160 {
|
||||
let x = -3000.0 + float(i) * 37.3
|
||||
let z = -3100.0 + float(j) * 41.7
|
||||
if terrain_height(render3d_st, x, z) != hf_expect(x, z) { off += 1 }
|
||||
if terrain_height_file(render3d_st, x, z) != hf_expect(x, z) { off += 1 }
|
||||
let px = min(max(int(Math.floor((x + 4096.0) * 256.0 / 8192.0)), 0), 255)
|
||||
let pz = min(max(int(Math.floor((z + 4096.0) * 256.0 / 8192.0)), 0), 255)
|
||||
if terrain_ortho(render3d_st, x, z) != hf_rgb(px, pz) { off += 1 }
|
||||
}
|
||||
}
|
||||
expect_eq(off, 0)
|
||||
for c in 0 .. 5 {
|
||||
let x = -4096.0 + 64.0 * float(c * 13 + 1) - 1.0 # a texel square across a tile corner
|
||||
let z = -4096.0 + 64.0 * float(c * 7 + 2) - 0.5
|
||||
expect_eq(terrain_height(render3d_st, x, z), hf_expect(x, z))
|
||||
}
|
||||
expect_eq(terrain_height(render3d_st, -5000.0, 5000.0), hf_expect(-5000.0, 5000.0))
|
||||
}
|
||||
|
||||
test "a sweep of the whole map by the questions leaves every slot, what it holds and the clock as they were" (render3d_st: mut Render3dState) {
|
||||
expect(hf_open(render3d_st, "sweep"))
|
||||
terrain_tiles_prefetch(render3d_st, -200.0, 300.0, 300.0, 200)
|
||||
expect(terrain_height(render3d_st, 2000.0, 2000.0) != 0.12345) # a tile paged the ordinary way too
|
||||
let n2 = len(render3d_st.tt_slot_of)
|
||||
let slots = len(render3d_st.tt_tile_in)
|
||||
let slot_of = words(n2)
|
||||
for t in 0 .. n2 { slot_of[t] = render3d_st.tt_slot_of[t] }
|
||||
let tile_in = words(slots)
|
||||
let refs = words(slots)
|
||||
for s in 0 .. slots {
|
||||
tile_in[s] = render3d_st.tt_tile_in[s]
|
||||
refs[s] = render3d_st.tt_ref[s]
|
||||
}
|
||||
let h = floats(len(render3d_st.tt_h))
|
||||
for i in 0 .. len(h) { h[i] = render3d_st.tt_h[i] }
|
||||
let hand = render3d_st.tt_hand
|
||||
let reads = render3d_st.tt_reads
|
||||
let frame_reads = render3d_st.tt_frame_reads
|
||||
let was = hf_snap(render3d_st)
|
||||
var sum = 0.0
|
||||
var ortho = 0
|
||||
var z = -4096.0
|
||||
while z <= 4096.0 {
|
||||
var x = -4096.0
|
||||
while x <= 4096.0 {
|
||||
sum = sum + terrain_height_file(render3d_st, x, z)
|
||||
sum = sum + terrain_height(render3d_st, x, z) + terrain_height_file(render3d_st, x, z) + terrain_height_smooth(render3d_st, x, z)
|
||||
ortho = ortho ^ terrain_ortho(render3d_st, x, z)
|
||||
x = x + 16.0
|
||||
}
|
||||
z = z + 16.0
|
||||
}
|
||||
expect(sum != 0.0)
|
||||
var moved = 0
|
||||
for t in 0 .. n2 { if render3d_st.tt_slot_of[t] != slot_of[t] { moved += 1 } }
|
||||
for s in 0 .. slots { if render3d_st.tt_tile_in[s] != tile_in[s] or render3d_st.tt_ref[s] != refs[s] { moved += 1 } }
|
||||
for i in 0 .. len(h) { if render3d_st.tt_h[i] != h[i] { moved += 1 } }
|
||||
expect_eq(moved, 0)
|
||||
expect_eq(render3d_st.tt_hand, hand)
|
||||
expect_eq(render3d_st.tt_reads, reads)
|
||||
expect_eq(render3d_st.tt_frame_reads, frame_reads)
|
||||
expect(ortho != 0)
|
||||
expect_eq(hf_moved(render3d_st, was), 0)
|
||||
}
|
||||
|
||||
test "a ground layer's fill over the whole map leaves the slots as they were" (render3d_st: mut Render3dState) {
|
||||
expect(hf_open(render3d_st, "fill"))
|
||||
expect(hf_density(render3d_st, Os.temp_dir() + "/r3d_height_file_fill.lgd2"))
|
||||
terrain_tiles_prefetch(render3d_st, 0.0, 0.0, 250.0, 200)
|
||||
let was = hf_snap(render3d_st)
|
||||
if render3d_st.stream_scratch == null { render3d_st.stream_scratch = floats(4096 * INST_FLOATS) }
|
||||
let s = new Stream
|
||||
s.size = 64.0
|
||||
s.ox = -4096.0
|
||||
s.oz = -4096.0
|
||||
s.cur = new Chunk
|
||||
let g = new GroundFill
|
||||
g.step0 = 8.0
|
||||
g.trample = false
|
||||
var n = 0
|
||||
var bad = 0
|
||||
for cz in 0 .. 32 {
|
||||
for cx in 0 .. 32 {
|
||||
s.cur.count = 0
|
||||
ground_fill(render3d_st, s, cx * 4, cz * 4, 0, g)
|
||||
n += s.cur.count
|
||||
for k in 0 .. s.cur.count {
|
||||
let x = render3d_st.stream_scratch[k * INST_FLOATS]
|
||||
let z = render3d_st.stream_scratch[k * INST_FLOATS + 2]
|
||||
if render3d_st.stream_scratch[k * INST_FLOATS + 1] != hf_expect(x, z) - g.sink { bad += 1 }
|
||||
}
|
||||
}
|
||||
}
|
||||
expect(n > 32 * 32 * 32)
|
||||
expect_eq(bad, 0)
|
||||
expect_eq(hf_moved(render3d_st, was), 0)
|
||||
}
|
||||
|
||||
test "with the whole copy kept it is terrain_height" (render3d_st: mut Render3dState) {
|
||||
|
|
@ -126,4 +178,64 @@ program HeightFileTest {
|
|||
expect_eq(terrain_height_file(render3d_st, x, z), terrain_height(render3d_st, x, z))
|
||||
}
|
||||
}
|
||||
|
||||
# one layer, every tile one value (a word in the index): full density everywhere
|
||||
function hf_density(render3d_st: mut Render3dState, path: string) -> bool {
|
||||
let n = TERRAIN_RES / TT_TEX
|
||||
let size = GD_HEADW * 4 + n * n * 8
|
||||
let b = buffer(size)
|
||||
for k in 0 .. size { b[k] = 0 }
|
||||
hf_put(b, 0, GD_MAGIC)
|
||||
hf_put(b, 4, GD_VERSION)
|
||||
hf_put(b, 8, n)
|
||||
hf_put(b, 12, GD_SIDE)
|
||||
hf_put(b, 16, 1)
|
||||
hf_put(b, 32, 1)
|
||||
hf_put(b, 36, GD_HEADW * 4)
|
||||
for t in 0 .. n * n {
|
||||
hf_put(b, GD_HEADW * 4 + t * 8, 1)
|
||||
hf_put(b, GD_HEADW * 4 + t * 8 + 4, 255)
|
||||
}
|
||||
return Fs.write_bytes(path, b, size) and gd_open_at(render3d_st, path, 0)
|
||||
}
|
||||
# the page cache as it stands: which tile each slot holds, the clock, the heights, the read counts
|
||||
property HfSnap {
|
||||
slot_of: words = null,
|
||||
tile_in: words = null,
|
||||
refs: words = null,
|
||||
h: floats = null,
|
||||
o: words = null,
|
||||
hand: int = 0,
|
||||
reads: int = 0,
|
||||
frame_reads: int = 0
|
||||
}
|
||||
function hf_snap(render3d_st: Render3dState) -> HfSnap {
|
||||
let a = new HfSnap
|
||||
a.slot_of = words(len(render3d_st.tt_slot_of))
|
||||
for t in 0 .. len(a.slot_of) { a.slot_of[t] = render3d_st.tt_slot_of[t] }
|
||||
a.tile_in = words(len(render3d_st.tt_tile_in))
|
||||
a.refs = words(len(render3d_st.tt_tile_in))
|
||||
for s in 0 .. len(a.tile_in) {
|
||||
a.tile_in[s] = render3d_st.tt_tile_in[s]
|
||||
a.refs[s] = render3d_st.tt_ref[s]
|
||||
}
|
||||
a.h = floats(len(render3d_st.tt_h))
|
||||
for i in 0 .. len(a.h) { a.h[i] = render3d_st.tt_h[i] }
|
||||
a.o = words(len(render3d_st.tt_o))
|
||||
for i in 0 .. len(a.o) { a.o[i] = render3d_st.tt_o[i] }
|
||||
a.hand = render3d_st.tt_hand
|
||||
a.reads = render3d_st.tt_reads
|
||||
a.frame_reads = render3d_st.tt_frame_reads
|
||||
return a
|
||||
}
|
||||
# how many of those differ now
|
||||
function hf_moved(render3d_st: Render3dState, a: HfSnap) -> int {
|
||||
var moved = 0
|
||||
for t in 0 .. len(a.slot_of) { if render3d_st.tt_slot_of[t] != a.slot_of[t] { moved += 1 } }
|
||||
for s in 0 .. len(a.tile_in) { if render3d_st.tt_tile_in[s] != a.tile_in[s] or render3d_st.tt_ref[s] != a.refs[s] { moved += 1 } }
|
||||
for i in 0 .. len(a.h) { if render3d_st.tt_h[i] != a.h[i] { moved += 1 } }
|
||||
for i in 0 .. len(a.o) { if render3d_st.tt_o[i] != a.o[i] { moved += 1 } }
|
||||
if render3d_st.tt_hand != a.hand or render3d_st.tt_reads != a.reads or render3d_st.tt_frame_reads != a.frame_reads { moved += 1 }
|
||||
return moved
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue