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Refactoring the pass and pipeline, so that inputs and size are handed to and returned from the build function (formerly setSize). This is now the earliest place to build bind groups, which makes sense, because it's also the earliest place to create textures that are proportional to the size of the canvas.

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Rezmason
2021-11-15 00:30:09 -08:00
parent b0a4acdfdb
commit 1b61e304a5
10 changed files with 142 additions and 144 deletions
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37
js/webgpu/imagePass.js
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@@ -4,7 +4,7 @@ import { makeComputeTarget, loadTexture, loadShader, makeBindGroup, makePass } f
const defaultBGURL = "https://upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Flammarion_Colored.jpg/917px-Flammarion_Colored.jpg";
export default (context, getInputs) => {
export default (context) => {
const { config, device } = context;
const bgURL = "bgURL" in config ? config.bgURL : defaultBGURL;
@@ -19,12 +19,9 @@ export default (context, getInputs) => {
let output;
let screenSize;
let backgroundTex;
let computeBindGroup;
const getOutputs = () => ({
primary: output,
});
const ready = (async () => {
const loaded = (async () => {
const [bgTex, imageShader] = await Promise.all(assets);
backgroundTex = bgTex;
@@ -37,29 +34,27 @@ export default (context, getInputs) => {
});
})();
const setSize = (width, height) => {
const build = (size, inputs) => {
output?.destroy();
output = makeComputeTarget(device, width, height);
screenSize = [width, height];
};
const execute = (encoder) => {
const inputs = getInputs();
const tex = inputs.primary;
const bloomTex = inputs.bloom;
const computePass = encoder.beginComputePass();
computePass.setPipeline(computePipeline);
const computeBindGroup = makeBindGroup(device, computePipeline, 0, [
output = makeComputeTarget(device, size);
screenSize = size;
computeBindGroup = makeBindGroup(device, computePipeline, 0, [
linearSampler,
tex.createView(),
bloomTex.createView(),
inputs.primary.createView(),
inputs.bloom.createView(),
backgroundTex.createView(),
output.createView(),
]);
return { primary: output };
};
const run = (encoder) => {
const computePass = encoder.beginComputePass();
computePass.setPipeline(computePipeline);
computePass.setBindGroup(0, computeBindGroup);
computePass.dispatch(Math.ceil(screenSize[0] / 32), screenSize[1], 1);
computePass.endPass();
};
return makePass(getOutputs, ready, setSize, execute);
return makePass(loaded, build, run);
};