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
|
uniform float4x4 ViewProj;
uniform texture2d image;
uniform float2 uv_size;
uniform float wrinkle_position;
uniform float wrinkle_size;
uniform float pop_line_prob;
uniform float time;
uniform float hs_primary_thickness;
uniform float hs_primary_offset;
uniform float hs_secondary_thickness;
uniform float hs_secondary_horiz_offset;
uniform float hs_secondary_vert_offset;
uniform float horizontal_offset;
#include "noise-functions.effect"
sampler_state textureSampler{
Filter = Linear;
AddressU = Clamp;
AddressV = Clamp;
MinLOD = 0;
MaxLOD = 0;
};
sampler_state borderSampler {
Filter = Linear;
AddressU = Border;
AddressV = Border;
BorderColor = 0xFF000000;
};
struct VertData
{
float4 pos : POSITION;
float2 uv : TEXCOORD0;
};
VertData mainTransform(VertData v_in)
{
v_in.pos = mul(float4(v_in.pos.xyz, 1.0), ViewProj);
return v_in;
}
float4 mainImage(VertData v_in) : TARGET
{
// Apply tape wrinkle
float2 coord = v_in.uv * uv_size;
float hs_shift = step(uv_size.y - hs_primary_thickness, coord.y) * hs_primary_offset;
float hs_top = uv_size.y - (hs_primary_thickness + hs_secondary_thickness + hs_secondary_vert_offset);
float hs_secondary_shift = step(hs_top, coord.y) * (1.0 - smoothstep(hs_top, hs_top + hs_secondary_thickness, coord.y)) * hs_secondary_horiz_offset;
coord.x -= hs_shift + hs_secondary_shift;
float2 sample_uv = (coord + float2(horizontal_offset, 0.0)) / uv_size;
float transition = 0.20 * wrinkle_size;
float ss_1 = smoothstep(wrinkle_position - wrinkle_size, wrinkle_position - wrinkle_size + transition, v_in.uv.y);
float ss_2 = 1.0 - smoothstep(wrinkle_position + wrinkle_size - transition, wrinkle_position + wrinkle_size, v_in.uv.y);
float weight = ss_1 * ss_2;
float pop_line = hash31(float3(0.0, coord.y, time));
float4 color = (1.0 - weight) * image.Sample(borderSampler, sample_uv) + weight * image.Sample(borderSampler, float2(sample_uv.x, wrinkle_position));
if (pop_line < pop_line_prob) {
pop_line = hash31(float3(coord.xy, time));
color = color * (1.0 - pop_line) + float4(1.0, 1.0, 1.0, color.a) * pop_line;
}
return color;
}
technique Draw
{
pass
{
vertex_shader = mainTransform(v_in);
pixel_shader = mainImage(v_in);
}
}
|
