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
|
/*
* 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
ccl_device_inline void kernel_write_pass_float(ccl_global float *buffer, int sample, float value)
{
ccl_global float *buf = buffer;
*buf = (sample == 0)? value: *buf + value;
}
ccl_device_inline void kernel_write_pass_float3(ccl_global float *buffer, int sample, float3 value)
{
ccl_global float3 *buf = (ccl_global float3*)buffer;
*buf = (sample == 0)? value: *buf + value;
}
ccl_device_inline void kernel_write_pass_float4(ccl_global float *buffer, int sample, float4 value)
{
ccl_global float4 *buf = (ccl_global float4*)buffer;
*buf = (sample == 0)? value: *buf + value;
}
ccl_device_inline void kernel_write_data_passes(KernelGlobals *kg, ccl_global float *buffer, PathRadiance *L,
ShaderData *sd, int sample, int path_flag, float3 throughput)
{
#ifdef __PASSES__
if(!(path_flag & PATH_RAY_CAMERA))
return;
int flag = kernel_data.film.pass_flag;
if(!(flag & PASS_ALL))
return;
/* todo: add alpha threshold */
if(!(path_flag & PATH_RAY_TRANSPARENT)) {
if(sample == 0) {
if(flag & PASS_DEPTH) {
float depth = camera_distance(kg, sd->P);
kernel_write_pass_float(buffer + kernel_data.film.pass_depth, sample, depth);
}
if(flag & PASS_OBJECT_ID) {
float id = object_pass_id(kg, sd->object);
kernel_write_pass_float(buffer + kernel_data.film.pass_object_id, sample, id);
}
if(flag & PASS_MATERIAL_ID) {
float id = shader_pass_id(kg, sd);
kernel_write_pass_float(buffer + kernel_data.film.pass_material_id, sample, id);
}
}
if(flag & PASS_NORMAL) {
float3 normal = sd->N;
kernel_write_pass_float3(buffer + kernel_data.film.pass_normal, sample, normal);
}
if(flag & PASS_UV) {
float3 uv = primitive_uv(kg, sd);
kernel_write_pass_float3(buffer + kernel_data.film.pass_uv, sample, uv);
}
if(flag & PASS_MOTION) {
float4 speed = primitive_motion_vector(kg, sd);
kernel_write_pass_float4(buffer + kernel_data.film.pass_motion, sample, speed);
kernel_write_pass_float(buffer + kernel_data.film.pass_motion_weight, sample, 1.0f);
}
}
if(flag & (PASS_DIFFUSE_INDIRECT|PASS_DIFFUSE_COLOR|PASS_DIFFUSE_DIRECT))
L->color_diffuse += shader_bsdf_diffuse(kg, sd)*throughput;
if(flag & (PASS_GLOSSY_INDIRECT|PASS_GLOSSY_COLOR|PASS_GLOSSY_DIRECT))
L->color_glossy += shader_bsdf_glossy(kg, sd)*throughput;
if(flag & (PASS_TRANSMISSION_INDIRECT|PASS_TRANSMISSION_COLOR|PASS_TRANSMISSION_DIRECT))
L->color_transmission += shader_bsdf_transmission(kg, sd)*throughput;
if(flag & (PASS_SUBSURFACE_INDIRECT|PASS_SUBSURFACE_COLOR|PASS_SUBSURFACE_DIRECT))
L->color_subsurface += shader_bsdf_subsurface(kg, sd)*throughput;
if(flag & PASS_MIST) {
/* bring depth into 0..1 range */
float mist_start = kernel_data.film.mist_start;
float mist_inv_depth = kernel_data.film.mist_inv_depth;
float depth = camera_distance(kg, sd->P);
float mist = clamp((depth - mist_start)*mist_inv_depth, 0.0f, 1.0f);
/* falloff */
float mist_falloff = kernel_data.film.mist_falloff;
if(mist_falloff == 1.0f)
;
else if(mist_falloff == 2.0f)
mist = mist*mist;
else if(mist_falloff == 0.5f)
mist = sqrtf(mist);
else
mist = powf(mist, mist_falloff);
/* modulate by transparency */
float3 alpha = shader_bsdf_alpha(kg, sd);
L->mist += (1.0f - mist)*average(throughput*alpha);
}
#endif
}
ccl_device_inline void kernel_write_light_passes(KernelGlobals *kg, ccl_global float *buffer, PathRadiance *L, int sample)
{
#ifdef __PASSES__
int flag = kernel_data.film.pass_flag;
if(!kernel_data.film.use_light_pass)
return;
if(flag & PASS_DIFFUSE_INDIRECT)
kernel_write_pass_float3(buffer + kernel_data.film.pass_diffuse_indirect, sample, L->indirect_diffuse);
if(flag & PASS_GLOSSY_INDIRECT)
kernel_write_pass_float3(buffer + kernel_data.film.pass_glossy_indirect, sample, L->indirect_glossy);
if(flag & PASS_TRANSMISSION_INDIRECT)
kernel_write_pass_float3(buffer + kernel_data.film.pass_transmission_indirect, sample, L->indirect_transmission);
if(flag & PASS_SUBSURFACE_INDIRECT)
kernel_write_pass_float3(buffer + kernel_data.film.pass_subsurface_indirect, sample, L->indirect_subsurface);
if(flag & PASS_DIFFUSE_DIRECT)
kernel_write_pass_float3(buffer + kernel_data.film.pass_diffuse_direct, sample, L->direct_diffuse);
if(flag & PASS_GLOSSY_DIRECT)
kernel_write_pass_float3(buffer + kernel_data.film.pass_glossy_direct, sample, L->direct_glossy);
if(flag & PASS_TRANSMISSION_DIRECT)
kernel_write_pass_float3(buffer + kernel_data.film.pass_transmission_direct, sample, L->direct_transmission);
if(flag & PASS_SUBSURFACE_DIRECT)
kernel_write_pass_float3(buffer + kernel_data.film.pass_subsurface_direct, sample, L->direct_subsurface);
if(flag & PASS_EMISSION)
kernel_write_pass_float3(buffer + kernel_data.film.pass_emission, sample, L->emission);
if(flag & PASS_BACKGROUND)
kernel_write_pass_float3(buffer + kernel_data.film.pass_background, sample, L->background);
if(flag & PASS_AO)
kernel_write_pass_float3(buffer + kernel_data.film.pass_ao, sample, L->ao);
if(flag & PASS_DIFFUSE_COLOR)
kernel_write_pass_float3(buffer + kernel_data.film.pass_diffuse_color, sample, L->color_diffuse);
if(flag & PASS_GLOSSY_COLOR)
kernel_write_pass_float3(buffer + kernel_data.film.pass_glossy_color, sample, L->color_glossy);
if(flag & PASS_TRANSMISSION_COLOR)
kernel_write_pass_float3(buffer + kernel_data.film.pass_transmission_color, sample, L->color_transmission);
if(flag & PASS_SUBSURFACE_COLOR)
kernel_write_pass_float3(buffer + kernel_data.film.pass_subsurface_color, sample, L->color_subsurface);
if(flag & PASS_SHADOW) {
float4 shadow = L->shadow;
shadow.w = kernel_data.film.pass_shadow_scale;
kernel_write_pass_float4(buffer + kernel_data.film.pass_shadow, sample, shadow);
}
if(flag & PASS_MIST)
kernel_write_pass_float(buffer + kernel_data.film.pass_mist, sample, 1.0f - L->mist);
#endif
}
CCL_NAMESPACE_END
|