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This commit is contained in:
Stewart Allen 2020-05-03 11:27:36 -04:00
commit 55731b0251
2 changed files with 26 additions and 19 deletions
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41
js/kiri-driver-sla.js
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@ -1247,6 +1247,7 @@ let gs_kiri_sla = exports;
return {width, height, data:buf, png};
}
// write out a thumbnail image
function writePhotonImage(preview, writer) {
let data = new Uint8Array(preview.data), len = data.byteLength;
writer.writeU32(preview.width, true);
@ -1310,15 +1311,15 @@ let gs_kiri_sla = exports;
}
}
// load wasm renderer in worker context
// load renderer code in worker context only
if (!self.window) {
fetch('/wasm/kiri-sla.wasm')
.then(response => response.arrayBuffer())
.then(bytes => WebAssembly.instantiate(bytes, {
env: {
last: (a,b) => { console.log('last',a,b) },
report: (a,b) => { console.log('report',a,b)
}}
reportf: (a,b) => { console.log('[f]',a,b) },
reporti: (a,b) => { console.log('[i]',a,b) }
}
}))
.then(results => {
let {module, instance} = results;
@ -1330,9 +1331,9 @@ let gs_kiri_sla = exports;
render: exports.render,
rle_encode: exports.rle_encode
};
// console.log({heap});
});
// new WebAssembly rasterizer
self.renderLayerWasm = function renderLayer(params) {
let { width, height, index, widgets, scaleX, scaleY, masks } = params;
let width2 = width / 2, height2 = height / 2;
@ -1356,6 +1357,7 @@ let gs_kiri_sla = exports;
}
}
// serialize poly into wasm heap memory
function writePoly(writer, poly) {
let pos = writer.skip(2);
let inner = poly.inner;
@ -1399,6 +1401,7 @@ let gs_kiri_sla = exports;
writer.writeU16(height, true);
writer.writeU16(array.length, true);
// scale and move all polys to fit in rendered platform coordinates
for (let i=0, il=array.length; i<il; i++) {
let poly = array[i];
scaleMovePoly(poly);
@ -1408,7 +1411,9 @@ let gs_kiri_sla = exports;
wasm.render(0, imagelen, 0);
let image = wasm.heap.slice(0, imagelen), layers = [];
// one rle encoded bitstream for each mash (anti-alias sublayer)
for (let l=0; l<masks.length; l++) {
// while the image is still in wasm heap memory, rle encode it
let rlelen = wasm.rle_encode(0, 0, imagelen, masks[l], imagelen, 0);
layers.push(wasm.heap.slice(imagelen, imagelen + rlelen));
}
@ -1416,18 +1421,7 @@ let gs_kiri_sla = exports;
return { image, layers, end: count === 0 };
}
function polyout(poly, ctx, opt) {
let { scaleX, scaleY, width, height, width2, height2 } = opt;
poly.forEachPoint((p,i) => {
if (i === 0) {
ctx.moveTo(height - (p.y * scaleY + height2), p.x * scaleX + width2);
} else {
ctx.lineTo(height - (p.y * scaleY + height2), p.x * scaleX + width2);
}
}, true);
ctx.closePath();
}
// legacy JS-only rasterizer uses OffscreenCanvas
self.renderLayer = function renderLayer(params) {
let {width, height, index, widgets, scaleX, scaleY} = params;
let layer = new OffscreenCanvas(height,width);
@ -1467,6 +1461,19 @@ let gs_kiri_sla = exports;
}
return { image: red, end: count === 0 };
}
function polyout(poly, ctx, opt) {
let { scaleX, scaleY, width, height, width2, height2 } = opt;
poly.forEachPoint((p,i) => {
if (i === 0) {
ctx.moveTo(height - (p.y * scaleY + height2), p.x * scaleX + width2);
} else {
ctx.lineTo(height - (p.y * scaleY + height2), p.x * scaleX + width2);
}
}, true);
ctx.closePath();
}
}
})();