Phase 4: play-through checked, final profile, dead code removed, next-step recommendation (t88)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/render/cell.js

@@ -16,7 +16,7 @@ function cellPixel(x, y) {
   }
   const useFog = SET.fog, grain = SET.grain, incand = SET.incandescence;
   const anim = R.frame, lens = R.lens, tl = THERM[SET.thermalPalette] || THERM.inferno;
-  const glowOn = SET.glow !== 'off' && !lens, gpx = R.glowPx, gw = R.glowC.width;
+  const glowOn = SET.glow !== 'off' && !lens, gpx = R.glowPx, gw = R.glowW;
   const fy = y / FOG, fj = Math.floor(fy), ft = fy - fj, fr = fj * FW, fn = Math.min(FH - 1, fj + 1) * FW;
   const yw = y * W;
   let skr = SKY_R[y], skg = SKY_G[y], skb = SKY_B[y];

src/render/gpu/draw.js

@@ -58,7 +58,7 @@ function gpuDraw(lighting, glowOn, lightUpdate) {
   compute.dispatchWorkgroups(Math.ceil(R.canvas.width / 8), Math.ceil(R.canvas.height / 8)); compute.end();
   if (glowOn && !R.smoothOn) for (let i = 0; i < 2; i++) {
     const pass = encoder.beginComputePass(); pass.setPipeline(GPU.blur); pass.setBindGroup(0, GPU.bindBlur[i]);
-    pass.dispatchWorkgroups(Math.ceil(R.glowC.width / 8), Math.ceil(R.glowC.height / 8)); pass.end();
+    pass.dispatchWorkgroups(Math.ceil(R.glowW / 8), Math.ceil(R.glowH / 8)); pass.end();
   }
   const lightTimed = lighting && (lightUpdate || GPU.lightFrame === undefined);
   if (lightTimed) { gpuLight(encoder, timed); GPU.lightFrame = R.frame; }

src/render/gpu/textures.js

@@ -41,7 +41,7 @@ function gpuViewTextures() {
   if (GPU.viewKey === key) return;
   GPU.viewKey = key; GPU.lightFrame = undefined;
   if (GPU.viewTextures) for (const t of GPU.viewTextures) t.destroy();
-  const bw = R.bw, bh = R.bh, gw = R.glowC.width, gh = R.glowC.height;
+  const bw = R.bw, bh = R.bh, gw = R.glowW, gh = R.glowH;
   GPU.crackTex = gpuTexture(R.canvas.width, R.canvas.height, 'rgba8unorm', true);
   GPU.override = gpuTexture(bw, bh); GPU.overrideGlow = gpuTexture(gw, gh);
   GPU.colourTex = gpuTexture(bw, bh, 'rgba8unorm', true);
@@ -82,7 +82,7 @@ function gpuUpload(lighting, glowOn) {
   const q = GPU.device.queue;
   q.writeBuffer(GPU.land, 0, land);
   gpuWrite(GPU.override, R.px, R.bw, 0, 0, R.bw, R.bh);
-  gpuWrite(GPU.overrideGlow, R.glowPx, R.glowC.width, 0, 0, R.glowC.width, R.glowC.height);
+  gpuWrite(GPU.overrideGlow, R.glowPx, R.glowW, 0, 0, R.glowW, R.glowH);
   for(let i=0;i<W;i++) { GPU.columnData[i*4]=surfY[i]; GPU.columnData[i*4+1]=roofY[i]; }
   q.writeBuffer(GPU.columns,0,GPU.columnData);
   if (R.smoothOn) gpuSmoothUpload();

src/render/setup.js

@@ -2,8 +2,8 @@
    thermal palettes, pipes, trees, sky), canvas setup and the camera. */
 
 const R = {
-  canvas: null, ctx: null, buf: null, bctx: null, img: null, px: null,
-  glowC: null, glowX: null, glowImg: null, glowPx: null,
+  canvas: null, ctx: null, px: null,
+  glowW: 0, glowH: 0, glowPx: null,
   bw: 0, bh: 0, zp: 3, camX: 0, camY: 0, vx0: 0, vy0: 0,
   lw: 0, lh: 0, lx0: 0, ly0: 0, lres: 1,
   frame: 0, lens: false, particles: [],
@@ -139,10 +139,6 @@ function buildSky() {
 function initRender(canvas) {
   R.canvas = canvas;
   R.ctx = canvas.getContext('2d');
-  R.buf = document.createElement('canvas');
-  R.bctx = R.buf.getContext('2d');
-  R.glowC = document.createElement('canvas');
-  R.glowX = R.glowC.getContext('2d');
 }
 
 function resizeRender() {
@@ -155,15 +151,11 @@ function resizeRender() {
   const bw = Math.ceil(cw / zp) + 2, bh = Math.ceil(ch / zp) + 2;
   if (bw !== R.bw || bh !== R.bh) {
     R.bw = bw; R.bh = bh;
-    R.buf.width = bw; R.buf.height = bh;
-    R.img = R.bctx.createImageData(bw, bh);
-    R.px = new Uint32Array(R.img.data.buffer);
+    R.px = new Uint32Array(bw * bh);
     // the smooth look also needs, per grain: the colour behind it, any tree, and occupancy fields
     R.backPx = new Uint32Array(bw * bh); R.treePx = new Uint32Array(bw * bh); R.fieldPx = new Uint32Array(bw * bh); R.moldMask = new Uint8Array(bw * bh);
-    const gw = Math.ceil(bw / 2), gh = Math.ceil(bh / 2);
-    R.glowC.width = gw; R.glowC.height = gh;
-    R.glowImg = R.glowX.createImageData(gw, gh);
-    R.glowPx = new Uint32Array(R.glowImg.data.buffer);
+    R.glowW = Math.ceil(bw / 2); R.glowH = Math.ceil(bh / 2);
+    R.glowPx = new Uint32Array(R.glowW * R.glowH);
     R.lw = 0;
   }
 }

src/render/world.js

@@ -4,7 +4,7 @@ function fogColor(c, k) { return (c & 0xff000000) | (((c >>> 16 & 255) * k) << 1
 // ---------- World pixels ----------
 function drawWorld() {
   const perfStart = (PERF_MARKS || SET.showPerf) ? performance.now() : 0;
-  if (PERF_MARKS || SET.showPerf) { perfMarks.light = 0; perfMarks.override = 0; delete perfMarks.gpu; }
+  if (PERF_MARKS || SET.showPerf) { perfMarks.override = 0; delete perfMarks.gpu; }
   if (!GPU.ok) return;
   R.gpuOn = true; GPU.canvas.hidden = false;
   R.ctx.clearRect(0, 0, R.canvas.width, R.canvas.height);
@@ -40,7 +40,7 @@ function drawWorld() {
   worldObjects();
   if (PERF_MARKS || SET.showPerf) {
     perfMarks.color = performance.now() - colorStart;
-    perfMarks.prepare = colorStart - perfStart - perfMarks.light;
+    perfMarks.prepare = colorStart - perfStart;
   }
   gpuDraw(lighting, glowOn, lightUpdate);
 }