1 /*
2 * Copyright 2011-2017 Blender Foundation
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 CCL_NAMESPACE_BEGIN
18
19 #define ccl_get_feature(buffer, pass) (buffer)[(pass)*pass_stride]
20
21 /* Loop over the pixels in the range [low.x, high.x) x [low.y, high.y).+ * pixel_buffer always
22 * points to the current pixel in the first pass. Repeat the loop for every secondary frame if
23 * there are any. */
24 #define FOR_PIXEL_WINDOW \
25 for (int frame = 0; frame < tile_info->num_frames; frame++) { \
26 pixel.z = tile_info->frames[frame]; \
27 pixel_buffer = buffer + (low.y - rect.y) * buffer_w + (low.x - rect.x) + \
28 frame * frame_stride; \
29 for (pixel.y = low.y; pixel.y < high.y; pixel.y++) { \
30 for (pixel.x = low.x; pixel.x < high.x; pixel.x++, pixel_buffer++) {
31
32 #define END_FOR_PIXEL_WINDOW \
33 } \
34 pixel_buffer += buffer_w - (high.x - low.x); \
35 } \
36 }
37
filter_get_features(int3 pixel,const ccl_global float * ccl_restrict buffer,float * features,bool use_time,const float * ccl_restrict mean,int pass_stride)38 ccl_device_inline void filter_get_features(int3 pixel,
39 const ccl_global float *ccl_restrict buffer,
40 float *features,
41 bool use_time,
42 const float *ccl_restrict mean,
43 int pass_stride)
44 {
45 features[0] = pixel.x;
46 features[1] = pixel.y;
47 features[2] = fabsf(ccl_get_feature(buffer, 0));
48 features[3] = ccl_get_feature(buffer, 1);
49 features[4] = ccl_get_feature(buffer, 2);
50 features[5] = ccl_get_feature(buffer, 3);
51 features[6] = ccl_get_feature(buffer, 4);
52 features[7] = ccl_get_feature(buffer, 5);
53 features[8] = ccl_get_feature(buffer, 6);
54 features[9] = ccl_get_feature(buffer, 7);
55 if (use_time) {
56 features[10] = pixel.z;
57 }
58 if (mean) {
59 for (int i = 0; i < (use_time ? 11 : 10); i++) {
60 features[i] -= mean[i];
61 }
62 }
63 }
64
filter_get_feature_scales(int3 pixel,const ccl_global float * ccl_restrict buffer,float * scales,bool use_time,const float * ccl_restrict mean,int pass_stride)65 ccl_device_inline void filter_get_feature_scales(int3 pixel,
66 const ccl_global float *ccl_restrict buffer,
67 float *scales,
68 bool use_time,
69 const float *ccl_restrict mean,
70 int pass_stride)
71 {
72 scales[0] = fabsf(pixel.x - mean[0]);
73 scales[1] = fabsf(pixel.y - mean[1]);
74 scales[2] = fabsf(fabsf(ccl_get_feature(buffer, 0)) - mean[2]);
75 scales[3] = len_squared(make_float3(ccl_get_feature(buffer, 1) - mean[3],
76 ccl_get_feature(buffer, 2) - mean[4],
77 ccl_get_feature(buffer, 3) - mean[5]));
78 scales[4] = fabsf(ccl_get_feature(buffer, 4) - mean[6]);
79 scales[5] = len_squared(make_float3(ccl_get_feature(buffer, 5) - mean[7],
80 ccl_get_feature(buffer, 6) - mean[8],
81 ccl_get_feature(buffer, 7) - mean[9]));
82 if (use_time) {
83 scales[6] = fabsf(pixel.z - mean[10]);
84 }
85 }
86
filter_calculate_scale(float * scale,bool use_time)87 ccl_device_inline void filter_calculate_scale(float *scale, bool use_time)
88 {
89 scale[0] = 1.0f / max(scale[0], 0.01f);
90 scale[1] = 1.0f / max(scale[1], 0.01f);
91 scale[2] = 1.0f / max(scale[2], 0.01f);
92 if (use_time) {
93 scale[10] = 1.0f / max(scale[6], 0.01f);
94 }
95 scale[6] = 1.0f / max(scale[4], 0.01f);
96 scale[7] = scale[8] = scale[9] = 1.0f / max(sqrtf(scale[5]), 0.01f);
97 scale[3] = scale[4] = scale[5] = 1.0f / max(sqrtf(scale[3]), 0.01f);
98 }
99
filter_get_color(const ccl_global float * ccl_restrict buffer,int pass_stride)100 ccl_device_inline float3 filter_get_color(const ccl_global float *ccl_restrict buffer,
101 int pass_stride)
102 {
103 return make_float3(
104 ccl_get_feature(buffer, 8), ccl_get_feature(buffer, 9), ccl_get_feature(buffer, 10));
105 }
106
design_row_add(float * design_row,int rank,const ccl_global float * ccl_restrict transform,int stride,int row,float feature,int transform_row_stride)107 ccl_device_inline void design_row_add(float *design_row,
108 int rank,
109 const ccl_global float *ccl_restrict transform,
110 int stride,
111 int row,
112 float feature,
113 int transform_row_stride)
114 {
115 for (int i = 0; i < rank; i++) {
116 design_row[1 + i] += transform[(row * transform_row_stride + i) * stride] * feature;
117 }
118 }
119
120 /* Fill the design row. */
filter_get_design_row_transform(int3 p_pixel,const ccl_global float * ccl_restrict p_buffer,int3 q_pixel,const ccl_global float * ccl_restrict q_buffer,int pass_stride,int rank,float * design_row,const ccl_global float * ccl_restrict transform,int stride,bool use_time)121 ccl_device_inline void filter_get_design_row_transform(
122 int3 p_pixel,
123 const ccl_global float *ccl_restrict p_buffer,
124 int3 q_pixel,
125 const ccl_global float *ccl_restrict q_buffer,
126 int pass_stride,
127 int rank,
128 float *design_row,
129 const ccl_global float *ccl_restrict transform,
130 int stride,
131 bool use_time)
132 {
133 int num_features = use_time ? 11 : 10;
134
135 design_row[0] = 1.0f;
136 math_vector_zero(design_row + 1, rank);
137
138 #define DESIGN_ROW_ADD(I, F) \
139 design_row_add(design_row, rank, transform, stride, I, F, num_features);
140 DESIGN_ROW_ADD(0, q_pixel.x - p_pixel.x);
141 DESIGN_ROW_ADD(1, q_pixel.y - p_pixel.y);
142 DESIGN_ROW_ADD(2, fabsf(ccl_get_feature(q_buffer, 0)) - fabsf(ccl_get_feature(p_buffer, 0)));
143 DESIGN_ROW_ADD(3, ccl_get_feature(q_buffer, 1) - ccl_get_feature(p_buffer, 1));
144 DESIGN_ROW_ADD(4, ccl_get_feature(q_buffer, 2) - ccl_get_feature(p_buffer, 2));
145 DESIGN_ROW_ADD(5, ccl_get_feature(q_buffer, 3) - ccl_get_feature(p_buffer, 3));
146 DESIGN_ROW_ADD(6, ccl_get_feature(q_buffer, 4) - ccl_get_feature(p_buffer, 4));
147 DESIGN_ROW_ADD(7, ccl_get_feature(q_buffer, 5) - ccl_get_feature(p_buffer, 5));
148 DESIGN_ROW_ADD(8, ccl_get_feature(q_buffer, 6) - ccl_get_feature(p_buffer, 6));
149 DESIGN_ROW_ADD(9, ccl_get_feature(q_buffer, 7) - ccl_get_feature(p_buffer, 7));
150 if (use_time) {
151 DESIGN_ROW_ADD(10, q_pixel.z - p_pixel.z)
152 }
153 #undef DESIGN_ROW_ADD
154 }
155
156 CCL_NAMESPACE_END
157