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
|
#define EPS 0.000000000001
uniform float4x4 ViewProj;
uniform texture2d image;
uniform texture2d blur_mask;
uniform texture2d blur_mask_inner;
uniform float2 texel_step;
uniform float stroke_thickness;
uniform float stroke_offset;
sampler_state textureSampler{
Filter = Linear;
AddressU = Clamp;
AddressV = Clamp;
MinLOD = 0;
MaxLOD = 0;
};
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 mainImageFilled(VertData v_in) : TARGET
{
float a = (blur_mask.Sample(textureSampler, v_in.uv)).a;
float stroke = step(EPS, a); // If less than EPS, 0, otherwise 1.0
return float4(stroke, stroke, stroke, stroke);
}
float4 mainImageOffsetInline(VertData v_in) : TARGET
{
float a = (blur_mask.Sample(textureSampler, v_in.uv)).a;
float ratio = 0.5 * stroke_thickness/(stroke_offset+stroke_thickness);
float stroke = step(EPS, a) - step(ratio, a);
return float4(stroke, stroke, stroke, stroke);
}
float4 mainImageOffsetSubtract(VertData v_in) : TARGET
{
float a_outer = (blur_mask.Sample(textureSampler, v_in.uv)).a;
float a_inner = (blur_mask_inner.Sample(textureSampler, v_in.uv)).a;
float stroke = step(EPS, a_outer) - step(EPS, a_inner);
return float4(stroke, stroke, stroke, stroke);
}
technique Filled
{
pass
{
vertex_shader = mainTransform(v_in);
pixel_shader = mainImageFilled(v_in);
}
}
technique OffsetInline
{
pass
{
vertex_shader = mainTransform(v_in);
pixel_shader = mainImageOffsetInline(v_in);
}
}
technique OffsetSubtract
{
pass
{
vertex_shader = mainTransform(v_in);
pixel_shader = mainImageOffsetSubtract(v_in);
}
}
|
