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Limit sky transition buffer memory

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vini 2026-07-19 14:18:33 -03:00
parent 8c1389557b
commit c9aca2ed50
1 changed files with 7 additions and 6 deletions
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13
plugin/contents/ui/dancer.html
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@ -1590,13 +1590,14 @@ let lastProjMs = -Infinity;
function projectSky() { function projectSky() {
const W = canvas.width, H = canvas.height; const W = canvas.width, H = canvas.height;
if (!W || !H) return; if (!W || !H) return;
if (renderCanvas.width !== W || renderCanvas.height !== H) { const horizonPx = H * HORIZON_F;
const bufferH = Math.ceil(Math.min(H, horizonPx * 1.05));
if (renderCanvas.width !== W || renderCanvas.height !== bufferH) {
renderCanvas.width = W; renderCanvas.width = W;
renderCanvas.height = H; renderCanvas.height = bufferH;
} }
const bctx = renderCanvas.getContext('2d'); const bctx = renderCanvas.getContext('2d');
bctx.clearRect(0, 0, W, H); bctx.clearRect(0, 0, W, bufferH);
const horizonPx = H * HORIZON_F;
const lst = localSiderealDeg(Date.now() + window.__skyTimeOffset); const lst = localSiderealDeg(Date.now() + window.__skyTimeOffset);
const glareOn = !document.body.classList.contains('balada') && const glareOn = !document.body.classList.contains('balada') &&
!document.body.classList.contains('chuva'); !document.body.classList.contains('chuva');
@ -1687,8 +1688,8 @@ function drawStars(ts) {
ctx.clearRect(0, 0, canvas.width, canvas.height); ctx.clearRect(0, 0, canvas.width, canvas.height);
const transition = Math.max(0, Math.min(1, const transition = Math.max(0, Math.min(1,
(ts - skyTransitionStart) / SKY_TRANSITION_MS)); (ts - skyTransitionStart) / SKY_TRANSITION_MS));
if (transition < 1 && previousBaseCanvas.width === canvas.width && if (transition < 1 && previousBaseCanvas.width === baseCanvas.width &&
previousBaseCanvas.height === canvas.height) { previousBaseCanvas.height === baseCanvas.height) {
const blend = transition * transition * (3 - 2 * transition); const blend = transition * transition * (3 - 2 * transition);
ctx.globalAlpha = 1 - blend; ctx.globalAlpha = 1 - blend;
ctx.drawImage(previousBaseCanvas, 0, 0); ctx.drawImage(previousBaseCanvas, 0, 0);