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export const description = `
renderPass store op test that drawn quad is either stored or cleared based on storeop
`;
import { makeTestGroup } from '../../../../common/framework/test_group.js';
import { GPUTest } from '../../../gpu_test.js';
export const g = makeTestGroup(GPUTest);
g.test('storeOp_controls_whether_1x1_drawn_quad_is_stored')
.desc(
`
TODO: is this duplicated with api,operation,render_pass,storeOp?
TODO: needs review and rename
`
)
.paramsSimple([
{ storeOp: 'store', _expected: 1 }, //
{ storeOp: 'discard', _expected: 0 },
] as const)
.fn(async t => {
const renderTexture = t.device.createTexture({
size: { width: 1, height: 1, depthOrArrayLayers: 1 },
format: 'r8unorm',
usage: GPUTextureUsage.COPY_SRC | GPUTextureUsage.RENDER_ATTACHMENT,
});
// create render pipeline
const renderPipeline = t.device.createRenderPipeline({
layout: 'auto',
vertex: {
module: t.device.createShaderModule({
code: `
@vertex fn main(
@builtin(vertex_index) VertexIndex : u32
) -> @builtin(position) vec4<f32> {
var pos : array<vec2<f32>, 3> = array<vec2<f32>, 3>(
vec2<f32>( 1.0, -1.0),
vec2<f32>( 1.0, 1.0),
vec2<f32>(-1.0, 1.0));
return vec4<f32>(pos[VertexIndex], 0.0, 1.0);
}
`,
}),
entryPoint: 'main',
},
fragment: {
module: t.device.createShaderModule({
code: `
@fragment fn main() -> @location(0) vec4<f32> {
return vec4<f32>(1.0, 0.0, 0.0, 1.0);
}
`,
}),
entryPoint: 'main',
targets: [{ format: 'r8unorm' }],
},
primitive: { topology: 'triangle-list' },
});
// encode pass and submit
const encoder = t.device.createCommandEncoder();
const pass = encoder.beginRenderPass({
colorAttachments: [
{
view: renderTexture.createView(),
storeOp: t.params.storeOp,
clearValue: { r: 0.0, g: 0.0, b: 0.0, a: 0.0 },
loadOp: 'clear',
},
],
});
pass.setPipeline(renderPipeline);
pass.draw(3);
pass.end();
t.device.queue.submit([encoder.finish()]);
// expect the buffer to be clear
t.expectSingleColor(renderTexture, 'r8unorm', {
size: [1, 1, 1],
exp: { R: t.params._expected },
});
});
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