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A pipeline is now an object with a build method and a run method. The build method returns the last step's outputs object.

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Rezmason
2022-05-03 12:07:48 -07:00
parent b09887ba0f
commit a6c88913f5
2 changed files with 13 additions and 7 deletions
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10
js/webgpu/main.js
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@@ -63,9 +63,7 @@ export default async (canvas, config) => {
};
const effectName = config.effect in effects ? config.effect : "plain";
const pipeline = makePipeline(context, [makeRain, makeBloomPass, effects[effectName], makeEndPass]);
await Promise.all(pipeline.map((step) => step.loaded));
const pipeline = await makePipeline(context, [makeRain, makeBloomPass, effects[effectName], makeEndPass]);
let frames = 0;
let start = NaN;
@@ -78,16 +76,16 @@ export default async (canvas, config) => {
if (canvasSize[0] !== canvasConfig.size[0] || canvasSize[1] !== canvasConfig.size[1]) {
canvasConfig.size = canvasSize;
canvasContext.configure(canvasConfig);
pipeline.reduce((outputs, step) => step.build(canvasSize, outputs), null);
pipeline.build(canvasSize);
}
device.queue.writeBuffer(timeBuffer, 0, timeUniforms.toBuffer({ seconds: (now - start) / 1000, frames }));
frames++;
const encoder = device.createCommandEncoder();
pipeline.forEach((step) => step.run(encoder));
pipeline.run(encoder);
// Eventually, when WebGPU allows it, we'll remove the endPass and just copy from our pipeline's output to the canvas texture.
// encoder.copyTextureToTexture({ texture: pipeline[pipeline.length - 1].getOutputs().primary }, { texture: canvasContext.getCurrentTexture() }, canvasSize);
// encoder.copyTextureToTexture({ texture: output.primary }, { texture: canvasContext.getCurrentTexture() }, canvasSize);
device.queue.submit([encoder.finish()]);
requestAnimationFrame(renderLoop);
};

10
js/webgpu/utils.js
View File

@@ -116,6 +116,14 @@ const makePass = (loaded, build, run) => ({
run: run ?? (() => {}),
});
const makePipeline = (context, steps) => steps.filter((f) => f != null).map((f) => f(context));
const makePipeline = async (context, steps) => {
steps = steps.filter((f) => f != null).map((f) => f(context));
await Promise.all(steps.map(step => step.loaded));
return {
steps,
build: (canvasSize) => steps.reduce((outputs, step) => step.build(canvasSize, outputs), null),
run: (encoder) => steps.forEach((step) => step.run(encoder))
};
}
export { getCanvasSize, makeRenderTarget, makeComputeTarget, make1DTexture, loadTexture, loadShader, makeUniformBuffer, makePass, makePipeline, makeBindGroup };