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
|
//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj -output-using-type
//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -compute -shaderobj -output-using-type
//TEST(compute):COMPARE_COMPUTE_EX:-cuda -compute -shaderobj -output-using-type
//TEST_INPUT:ubuffer(data=[0], stride=4):out,name=outputBuffer
RWStructuredBuffer<float> outputBuffer;
static const uint32_t N_LATENT_DIMS = 4;
static const uint32_t kDecoderInputCount = 6;
struct LatentTexture
{
static const uint32_t kLatentDimsCount = N_LATENT_DIMS;
static const uint32_t kLatentTextureCount = N_LATENT_DIMS / 4;
[BackwardDifferentiable]
void getCodeStochastic(float2 uv, out float code[kLatentDimsCount])
{
return getCode(uint2(1,2), code);
}
void getCode(uint2 texel, out float code[kLatentDimsCount])
{
for (uint i = 0; i < kLatentTextureCount; ++i)
{
for (uint j = 0; j < 4; ++j)
{
code[i * 4 + j] = j;
}
}
}
[BackwardDerivativeOf(getCode)]
void bwd_getCode(uint2 texel, float d_out[kLatentDimsCount])
{
outputBuffer[0] = d_out[0];
}
}
static LatentTexture gLatents;
[BackwardDifferentiable]
void test(float arr[10], out float result[3])
{
float sum = 0;
[ForceUnroll]
for (int i = 0; i < LatentTexture.kLatentDimsCount + kDecoderInputCount; i++)
sum += arr[i];
result[0] = sum;
result[1] = sum;
result[2] = sum;
}
[BackwardDifferentiable]
float evalDecoder()
{
// Latent code.
float latentCode[LatentTexture.kLatentDimsCount];
gLatents.getCodeStochastic(float2(1,2), latentCode);
// Model input.
float input[kDecoderInputCount + LatentTexture.kLatentDimsCount];
input[0] = 0;
input[1] = 1;
input[2] = 2;
input[3] = 3;
input[4] = 4;
input[5] = 5;
[ForceUnroll]
for (int i = 0; i < LatentTexture.kLatentDimsCount; i++)
{
input[kDecoderInputCount + i] = latentCode[i];
}
float res[3];
test(input, res);
return res[0] + res[1] + res[2];
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
{
__bwd_diff(evalDecoder)(1.0);
}
|
