1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
export const description = `
Stress tests covering robustness in the presence of slow shaders.
`;
import { makeTestGroup } from '../../common/framework/test_group.js';
import { GPUTest } from '../../webgpu/gpu_test.js';
export const g = makeTestGroup(GPUTest);
g.test('compute')
.desc(`Tests execution of compute passes with very long-running dispatch operations.`)
.fn(async t => {
const kDispatchSize = 1000;
const data = new Uint32Array(kDispatchSize);
const buffer = t.makeBufferWithContents(data, GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_SRC);
const module = t.device.createShaderModule({
code: `
struct Buffer { data: array<u32>, };
@group(0) @binding(0) var<storage, read_write> buffer: Buffer;
@compute @workgroup_size(1) fn main(
@builtin(global_invocation_id) id: vec3<u32>) {
loop {
if (buffer.data[id.x] == 1000000u) {
break;
}
buffer.data[id.x] = buffer.data[id.x] + 1u;
}
}
`,
});
const pipeline = t.device.createComputePipeline({
layout: 'auto',
compute: { module, entryPoint: 'main' },
});
const encoder = t.device.createCommandEncoder();
const pass = encoder.beginComputePass();
pass.setPipeline(pipeline);
const bindGroup = t.device.createBindGroup({
layout: pipeline.getBindGroupLayout(0),
entries: [{ binding: 0, resource: { buffer } }],
});
pass.setBindGroup(0, bindGroup);
pass.dispatchWorkgroups(kDispatchSize);
pass.end();
t.device.queue.submit([encoder.finish()]);
t.expectGPUBufferValuesEqual(buffer, new Uint32Array(new Array(kDispatchSize).fill(1000000)));
});
g.test('vertex')
.desc(`Tests execution of render passes with a very long-running vertex stage.`)
.fn(async t => {
const module = t.device.createShaderModule({
code: `
struct Data { counter: u32, increment: u32, };
@group(0) @binding(0) var<uniform> data: Data;
@vertex fn vmain() -> @builtin(position) vec4<f32> {
var counter: u32 = data.counter;
loop {
counter = counter + data.increment;
if (counter % 50000000u == 0u) {
break;
}
}
return vec4<f32>(1.0, 1.0, 0.0, f32(counter));
}
@fragment fn fmain() -> @location(0) vec4<f32> {
return vec4<f32>(1.0, 1.0, 0.0, 1.0);
}
`,
});
const pipeline = t.device.createRenderPipeline({
layout: 'auto',
vertex: { module, entryPoint: 'vmain', buffers: [] },
primitive: { topology: 'point-list' },
fragment: {
targets: [{ format: 'rgba8unorm' }],
module,
entryPoint: 'fmain',
},
});
const uniforms = t.makeBufferWithContents(new Uint32Array([0, 1]), GPUBufferUsage.UNIFORM);
const bindGroup = t.device.createBindGroup({
layout: pipeline.getBindGroupLayout(0),
entries: [
{
binding: 0,
resource: { buffer: uniforms },
},
],
});
const renderTarget = t.device.createTexture({
size: [3, 3],
usage: GPUTextureUsage.RENDER_ATTACHMENT | GPUTextureUsage.COPY_SRC,
format: 'rgba8unorm',
});
const encoder = t.device.createCommandEncoder();
const pass = encoder.beginRenderPass({
colorAttachments: [
{
view: renderTarget.createView(),
clearValue: [0, 0, 0, 0],
loadOp: 'clear',
storeOp: 'store',
},
],
});
pass.setPipeline(pipeline);
pass.setBindGroup(0, bindGroup);
pass.draw(1);
pass.end();
t.device.queue.submit([encoder.finish()]);
t.expectSinglePixelIn2DTexture(
renderTarget,
'rgba8unorm',
{ x: 1, y: 1 },
{
exp: new Uint8Array([255, 255, 0, 255]),
}
);
});
g.test('fragment')
.desc(`Tests execution of render passes with a very long-running fragment stage.`)
.fn(async t => {
const module = t.device.createShaderModule({
code: `
struct Data { counter: u32, increment: u32, };
@group(0) @binding(0) var<uniform> data: Data;
@vertex fn vmain() -> @builtin(position) vec4<f32> {
return vec4<f32>(0.0, 0.0, 0.0, 1.0);
}
@fragment fn fmain() -> @location(0) vec4<f32> {
var counter: u32 = data.counter;
loop {
counter = counter + data.increment;
if (counter % 50000000u == 0u) {
break;
}
}
return vec4<f32>(1.0, 1.0, 1.0 / f32(counter), 1.0);
}
`,
});
const pipeline = t.device.createRenderPipeline({
layout: 'auto',
vertex: { module, entryPoint: 'vmain', buffers: [] },
primitive: { topology: 'point-list' },
fragment: {
targets: [{ format: 'rgba8unorm' }],
module,
entryPoint: 'fmain',
},
});
const uniforms = t.makeBufferWithContents(new Uint32Array([0, 1]), GPUBufferUsage.UNIFORM);
const bindGroup = t.device.createBindGroup({
layout: pipeline.getBindGroupLayout(0),
entries: [
{
binding: 0,
resource: { buffer: uniforms },
},
],
});
const renderTarget = t.device.createTexture({
size: [3, 3],
usage: GPUTextureUsage.RENDER_ATTACHMENT | GPUTextureUsage.COPY_SRC,
format: 'rgba8unorm',
});
const encoder = t.device.createCommandEncoder();
const pass = encoder.beginRenderPass({
colorAttachments: [
{
view: renderTarget.createView(),
clearValue: [0, 0, 0, 0],
loadOp: 'clear',
storeOp: 'store',
},
],
});
pass.setPipeline(pipeline);
pass.setBindGroup(0, bindGroup);
pass.draw(1);
pass.end();
t.device.queue.submit([encoder.finish()]);
t.expectSinglePixelIn2DTexture(
renderTarget,
'rgba8unorm',
{ x: 1, y: 1 },
{
exp: new Uint8Array([255, 255, 0, 255]),
}
);
});
|
