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
|
/*
* Copyright 2011-2013 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
CCL_NAMESPACE_BEGIN
/* Brick */
ccl_device_inline float brick_noise(uint n) /* fast integer noise */
{
uint nn;
n = (n + 1013) & 0x7fffffff;
n = (n >> 13) ^ n;
nn = (n * (n * n * 60493 + 19990303) + 1376312589) & 0x7fffffff;
return 0.5f * ((float)nn / 1073741824.0f);
}
ccl_device_noinline_cpu float2 svm_brick(float3 p,
float mortar_size,
float mortar_smooth,
float bias,
float brick_width,
float row_height,
float offset_amount,
int offset_frequency,
float squash_amount,
int squash_frequency)
{
int bricknum, rownum;
float offset = 0.0f;
float x, y;
rownum = floor_to_int(p.y / row_height);
if (offset_frequency && squash_frequency) {
brick_width *= (rownum % squash_frequency) ? 1.0f : squash_amount; /* squash */
offset = (rownum % offset_frequency) ? 0.0f : (brick_width * offset_amount); /* offset */
}
bricknum = floor_to_int((p.x + offset) / brick_width);
x = (p.x + offset) - brick_width * bricknum;
y = p.y - row_height * rownum;
float tint = saturate((brick_noise((rownum << 16) + (bricknum & 0xFFFF)) + bias));
float min_dist = min(min(x, y), min(brick_width - x, row_height - y));
float mortar;
if (min_dist >= mortar_size) {
mortar = 0.0f;
}
else if (mortar_smooth == 0.0f) {
mortar = 1.0f;
}
else {
min_dist = 1.0f - min_dist / mortar_size;
mortar = (min_dist < mortar_smooth) ? smoothstepf(min_dist / mortar_smooth) : 1.0f;
}
return make_float2(tint, mortar);
}
ccl_device_noinline int svm_node_tex_brick(
const KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int offset)
{
uint4 node2 = read_node(kg, &offset);
uint4 node3 = read_node(kg, &offset);
uint4 node4 = read_node(kg, &offset);
/* Input and Output Sockets */
uint co_offset, color1_offset, color2_offset, mortar_offset, scale_offset;
uint mortar_size_offset, bias_offset, brick_width_offset, row_height_offset;
uint color_offset, fac_offset, mortar_smooth_offset;
/* RNA properties */
uint offset_frequency, squash_frequency;
svm_unpack_node_uchar4(node.y, &co_offset, &color1_offset, &color2_offset, &mortar_offset);
svm_unpack_node_uchar4(
node.z, &scale_offset, &mortar_size_offset, &bias_offset, &brick_width_offset);
svm_unpack_node_uchar4(
node.w, &row_height_offset, &color_offset, &fac_offset, &mortar_smooth_offset);
svm_unpack_node_uchar2(node2.x, &offset_frequency, &squash_frequency);
float3 co = stack_load_float3(stack, co_offset);
float3 color1 = stack_load_float3(stack, color1_offset);
float3 color2 = stack_load_float3(stack, color2_offset);
float3 mortar = stack_load_float3(stack, mortar_offset);
float scale = stack_load_float_default(stack, scale_offset, node2.y);
float mortar_size = stack_load_float_default(stack, mortar_size_offset, node2.z);
float mortar_smooth = stack_load_float_default(stack, mortar_smooth_offset, node4.x);
float bias = stack_load_float_default(stack, bias_offset, node2.w);
float brick_width = stack_load_float_default(stack, brick_width_offset, node3.x);
float row_height = stack_load_float_default(stack, row_height_offset, node3.y);
float offset_amount = __int_as_float(node3.z);
float squash_amount = __int_as_float(node3.w);
float2 f2 = svm_brick(co * scale,
mortar_size,
mortar_smooth,
bias,
brick_width,
row_height,
offset_amount,
offset_frequency,
squash_amount,
squash_frequency);
float tint = f2.x;
float f = f2.y;
if (f != 1.0f) {
float facm = 1.0f - tint;
color1 = facm * color1 + tint * color2;
}
if (stack_valid(color_offset))
stack_store_float3(stack, color_offset, color1 * (1.0f - f) + mortar * f);
if (stack_valid(fac_offset))
stack_store_float(stack, fac_offset, f);
return offset;
}
CCL_NAMESPACE_END
|
