while (*dst++=*src++);
Public
Edited
Apr 19, 2023
1 fork
2 stars
adapter = navigator.gpu?.requestAdapter()
device = adapter?.requestDevice()
canvas = DOM.canvas(width, 500)
context = canvas.getContext("webgpu")
presentationFormat = navigator.gpu?.getPreferredCanvasFormat()
{
// Configure the WebGPU Device
if (context)
context.configure({
device,
format: presentationFormat
});
}
module = device &&
device.createShaderModule({
label: "our hardcoded red triangle shaders",
code: `
@vertex fn vs(
@builtin(vertex_index) vertexIndex : u32
) -> @builtin(position) vec4f {
var pos = array<vec2f, 3>(
vec2f( 0.0, 0.5), // top center
vec2f(-0.5, -0.5), // bottom left
vec2f( 0.5, -0.5) // bottom right
);
return vec4f(pos[vertexIndex], 0.0, 1.0);
}
@fragment fn fs() -> @location(0) vec4f {
return vec4f(1.0, 0.0, 0.0, 1.0);
}
`
})
pipeline = device && device.createRenderPipeline({
label: "our hardcoded red triangle pipeline",
layout: "auto",
vertex: {
module,
entryPoint: "vs"
},
fragment: {
module,
entryPoint: "fs",
targets: [{ format: presentationFormat }]
}
})
renderPassDescriptor = ({
label: "our basic canvas renderPass",
colorAttachments: [
{
// view: <- to be filled out when we render
clearValue: [0.3, 0.3, 0.3, 1],
loadOp: "clear",
storeOp: "store"
}
]
})
{
if (context) {
// Get the current texture from the canvas context and
// set it as the texture to render to.
renderPassDescriptor.colorAttachments[0].view = context
.getCurrentTexture()
.createView();
// make a command encoder to start encoding commands
const encoder = device.createCommandEncoder({ label: "our encoder" });
// make a render pass encoder to encode render specific commands
const pass = encoder.beginRenderPass(renderPassDescriptor);
pass.setPipeline(pipeline);
pass.draw(3); // call our vertex shader 3 times
pass.end();
const commandBuffer = encoder.finish();
device.queue.submit([commandBuffer]);
}
}
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