Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 1 | /* |
Michele Di Giorgio | d9eaf61 | 2020-07-08 11:12:57 +0100 | [diff] [blame] | 2 | * Copyright (c) 2016-2020 Arm Limited. |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 3 | * |
| 4 | * SPDX-License-Identifier: MIT |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to |
| 8 | * deal in the Software without restriction, including without limitation the |
| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 10 | * sell copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all |
| 14 | * copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | */ |
| 24 | #include "helpers.h" |
| 25 | #include "warp_helpers.h" |
| 26 | |
| 27 | /** Transforms four 2D coordinates. This is used to map the output coordinates to the input coordinates. |
| 28 | * |
| 29 | * @param[in] coord 2D coordinates to transform. |
| 30 | * @param[in] scale input/output scale ratio |
| 31 | * |
| 32 | * @return a float8 containing 4 2D transformed values in the input image. |
| 33 | */ |
| 34 | inline const float8 transform_nearest(const float2 coord, const float2 scale) |
| 35 | { |
Michalis Spyrou | d473386 | 2019-07-09 14:21:06 +0100 | [diff] [blame] | 36 | #ifdef SAMPLING_POLICY_TOP_LEFT |
| 37 | const float4 in_x_coords = (float4)(coord.s0, 1 + coord.s0, 2 + coord.s0, 3 + coord.s0); |
| 38 | const float4 new_x = in_x_coords * (float4)(scale.s0); |
| 39 | const float4 new_y = (float4)(coord.s1 * scale.s1); |
| 40 | return (float8)(new_x.s0, new_y.s0, new_x.s1, new_y.s1, new_x.s2, new_y.s2, new_x.s3, new_y.s3); |
| 41 | #elif SAMPLING_POLICY_CENTER |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 42 | const float4 in_x_coords = (float4)(coord.s0, 1 + coord.s0, 2 + coord.s0, 3 + coord.s0); |
| 43 | const float4 new_x = (in_x_coords + ((float4)(0.5f))) * (float4)(scale.s0); |
| 44 | const float4 new_y = (float4)((coord.s1 + 0.5f) * scale.s1); |
| 45 | return (float8)(new_x.s0, new_y.s0, new_x.s1, new_y.s1, new_x.s2, new_y.s2, new_x.s3, new_y.s3); |
Michalis Spyrou | d473386 | 2019-07-09 14:21:06 +0100 | [diff] [blame] | 46 | #else /* SAMPLING_POLICY */ |
| 47 | #error("Unsupported sampling policy"); |
| 48 | #endif /* SAMPLING_POLICY */ |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | /** Transforms four 2D coordinates. This is used to map the output coordinates to the input coordinates. |
| 52 | * |
| 53 | * @param[in] coord 2D coordinates to transform. |
| 54 | * @param[in] scale input/output scale ratio |
| 55 | * |
| 56 | * @return a float8 containing 4 2D transformed values in the input image. |
| 57 | */ |
| 58 | inline const float8 transform_bilinear(const float2 coord, const float2 scale) |
| 59 | { |
| 60 | const float4 in_x_coords = (float4)(coord.s0, 1 + coord.s0, 2 + coord.s0, 3 + coord.s0); |
Daniil Efremov | 02bf80d | 2017-11-22 00:26:51 +0700 | [diff] [blame] | 61 | #ifdef SAMPLING_POLICY_TOP_LEFT |
| 62 | const float4 new_x = in_x_coords * (float4)(scale.s0); |
| 63 | const float4 new_y = (float4)(coord.s1 * scale.s1); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 64 | return (float8)(new_x.s0, new_y.s0, new_x.s1, new_y.s1, new_x.s2, new_y.s2, new_x.s3, new_y.s3); |
Daniil Efremov | 02bf80d | 2017-11-22 00:26:51 +0700 | [diff] [blame] | 65 | #elif SAMPLING_POLICY_CENTER |
| 66 | const float4 new_x = (in_x_coords + ((float4)(0.5f))) * (float4)(scale.s0) - (float4)(0.5f); |
| 67 | const float4 new_y = (float4)((coord.s1 + 0.5f) * scale.s1 - 0.5f); |
| 68 | return (float8)(new_x.s0, new_y.s0, new_x.s1, new_y.s1, new_x.s2, new_y.s2, new_x.s3, new_y.s3); |
| 69 | #else /* SAMPLING_POLICY */ |
| 70 | #error("Unsupported sampling policy"); |
| 71 | #endif /* SAMPLING_POLICY */ |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 72 | } |
| 73 | |
| 74 | /** Performs an affine transformation on an image interpolating with the NEAREAST NEIGHBOUR method. Input and output are single channel U8 or S16. |
| 75 | * |
Daniil Efremov | 02bf80d | 2017-11-22 00:26:51 +0700 | [diff] [blame] | 76 | * @note Sampling policy to used is passed as -DSAMPLING_POLICY_(TYPE) e.g. -DSAMPLING_POLICY_TOP_LEFT |
| 77 | * |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 78 | * @param[in] in_ptr Pointer to the source image. Supported data types: U8, S16. |
| 79 | * @param[in] in_stride_x Stride of the source image in X dimension (in bytes) |
| 80 | * @param[in] in_step_x src_stride_x * number of elements along X processed per workitem(in bytes) |
| 81 | * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes) |
| 82 | * @param[in] in_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) |
| 83 | * @param[in] in_offset_first_element_in_bytes The offset of the first element in the source image |
| 84 | * @param[out] out_ptr Pointer to the destination image. Supported data types: U8, S16. (Must be the same as the input) |
| 85 | * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes) |
| 86 | * @param[in] out_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) |
| 87 | * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes) |
| 88 | * @param[in] out_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) |
| 89 | * @param[in] out_offset_first_element_in_bytes The offset of the first element in the destination image |
| 90 | * @param[in] input_width Input image width |
| 91 | * @param[in] input_height Input image height |
steniu01 | f81652d | 2017-09-11 15:29:12 +0100 | [diff] [blame] | 92 | * @param[in] scale_x The scale factor along x dimension |
| 93 | * @param[in] scale_y The scale factor along y dimension |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 94 | */ |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 95 | __kernel void scale_nearest_neighbour_nchw( |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 96 | IMAGE_DECLARATION(in), |
| 97 | IMAGE_DECLARATION(out), |
| 98 | const float input_width, |
| 99 | const float input_height, |
steniu01 | f81652d | 2017-09-11 15:29:12 +0100 | [diff] [blame] | 100 | const float scale_x, |
| 101 | const float scale_y) |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 102 | { |
Sang-Hoon Park | 94d5051 | 2020-07-02 10:49:39 +0100 | [diff] [blame] | 103 | Image in = CONVERT_TO_IMAGE_STRUCT_NO_STEP(in); |
| 104 | Image out = CONVERT_TO_IMAGE_STRUCT(out); |
| 105 | const float2 r = (float2)(scale_x, scale_y); |
| 106 | float8 transformed = transform_nearest(get_current_coords(), r); |
| 107 | #ifdef ALIGN_CORNERS |
| 108 | transformed = round(transformed); |
| 109 | #endif // ALIGN_CORNERS |
| 110 | const float8 tc = clamp_to_border_with_size(transformed, input_width, input_height, BORDER_SIZE); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 111 | vstore4(read_texels4(&in, convert_int8(tc)), 0, (__global DATA_TYPE *)out.ptr); |
| 112 | } |
| 113 | |
| 114 | /** Performs an affine transformation on an image interpolating with the BILINEAR method. |
| 115 | * |
Daniil Efremov | 02bf80d | 2017-11-22 00:26:51 +0700 | [diff] [blame] | 116 | * @note Sampling policy to used is passed as -DSAMPLING_POLICY_(TYPE) e.g. -DSAMPLING_POLICY_TOP_LEFT |
| 117 | * |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 118 | * @param[in] in_ptr Pointer to the source image. Supported data types: U8, S16. |
| 119 | * @param[in] in_stride_x Stride of the source image in X dimension (in bytes) |
| 120 | * @param[in] in_step_x src_stride_x * number of elements along X processed per workitem(in bytes) |
| 121 | * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes) |
| 122 | * @param[in] in_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) |
| 123 | * @param[in] in_offset_first_element_in_bytes The offset of the first element in the source image |
| 124 | * @param[out] out_ptr Pointer to the destination image. Supported data types: U8, S16. (Must be the same as the input) |
| 125 | * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes) |
| 126 | * @param[in] out_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) |
| 127 | * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes) |
| 128 | * @param[in] out_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) |
| 129 | * @param[in] out_offset_first_element_in_bytes The offset of the first element in the destination image |
| 130 | * @param[in] input_width Input image width |
| 131 | * @param[in] input_height Input image height |
steniu01 | f81652d | 2017-09-11 15:29:12 +0100 | [diff] [blame] | 132 | * @param[in] scale_x The scale factor along x dimension |
| 133 | * @param[in] scale_y The scale factor along y dimension |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 134 | */ |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 135 | __kernel void scale_bilinear_nchw( |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 136 | IMAGE_DECLARATION(in), |
| 137 | IMAGE_DECLARATION(out), |
| 138 | const float input_width, |
| 139 | const float input_height, |
steniu01 | f81652d | 2017-09-11 15:29:12 +0100 | [diff] [blame] | 140 | const float scale_x, |
| 141 | const float scale_y) |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 142 | { |
| 143 | Image in = CONVERT_TO_IMAGE_STRUCT_NO_STEP(in); |
| 144 | Image out = CONVERT_TO_IMAGE_STRUCT(out); |
steniu01 | f81652d | 2017-09-11 15:29:12 +0100 | [diff] [blame] | 145 | const float2 r = (float2)(scale_x, scale_y); |
Isabella Gottardi | 1fab09f | 2017-07-13 15:55:57 +0100 | [diff] [blame] | 146 | const float8 tc = transform_bilinear(get_current_coords(), r); |
Daniil Efremov | 7a49c79 | 2017-11-14 21:25:34 +0700 | [diff] [blame] | 147 | vstore4(bilinear_interpolate_with_border(&in, tc, input_width, input_height, BORDER_SIZE), 0, (__global DATA_TYPE *)out.ptr); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 148 | } |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 149 | |
Michalis Spyrou | 1f8db2b | 2018-12-10 16:19:20 +0000 | [diff] [blame] | 150 | #if defined(DEPTH_OUT) |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 151 | /** Performs scale on an image interpolating with the NEAREAST NEIGHBOUR method. Input and output are single channel F32. (NHWC) |
| 152 | * |
| 153 | * @note Sampling policy to used is passed as -DSAMPLING_POLICY_(TYPE) e.g. -DSAMPLING_POLICY_TOP_LEFT |
Michalis Spyrou | 1f8db2b | 2018-12-10 16:19:20 +0000 | [diff] [blame] | 154 | * @note Output tensor's depth should be given as a preprocessor argument using -DDEPTH_OUT=size. e.g. -DDEPTH=16 |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 155 | * |
| 156 | * @param[in] in_ptr Pointer to the source image. Supported data types: U8/S16/F16/F32. |
| 157 | * @param[in] in_stride_x Stride of the source image in X dimension (in bytes) |
| 158 | * @param[in] in_step_x src_stride_x * number of elements along X processed per workitem(in bytes) |
| 159 | * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes) |
| 160 | * @param[in] in_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) |
| 161 | * @param[in] in_stride_z Stride of the source image in Z dimension (in bytes) |
| 162 | * @param[in] in_step_z src_stride_z * number of elements along Z processed per workitem(in bytes) |
| 163 | * @param[in] in_offset_first_element_in_bytes The offset of the first element in the source image |
| 164 | * @param[out] out_ptr Pointer to the destination image. Supported data types: same as @p in_ptr |
| 165 | * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes) |
| 166 | * @param[in] out_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) |
| 167 | * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes) |
| 168 | * @param[in] out_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) |
| 169 | * @param[in] out_stride_z Stride of the destination image in Z dimension (in bytes) |
| 170 | * @param[in] out_step_z dst_stride_z * number of elements along Z processed per workitem(in bytes) |
| 171 | * @param[in] out_offset_first_element_in_bytes The offset of the first element in the destination image |
| 172 | * @param[in] input_width Input image width |
| 173 | * @param[in] input_height Input image height |
| 174 | * @param[in] scale_x The scale factor along x dimension |
| 175 | * @param[in] scale_y The scale factor along y dimension |
| 176 | */ |
| 177 | __kernel void scale_nearest_neighbour_nhwc( |
Michalis Spyrou | 1f8db2b | 2018-12-10 16:19:20 +0000 | [diff] [blame] | 178 | TENSOR4D_DECLARATION(in), |
| 179 | TENSOR4D_DECLARATION(out), |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 180 | const float input_width, |
| 181 | const float input_height, |
| 182 | const float scale_x, |
| 183 | const float scale_y) |
| 184 | { |
Michalis Spyrou | 1f8db2b | 2018-12-10 16:19:20 +0000 | [diff] [blame] | 185 | Tensor4D in = CONVERT_TO_TENSOR4D_STRUCT_NO_STEP(in, 0); |
| 186 | Tensor4D out = CONVERT_TO_TENSOR4D_STRUCT(out, DEPTH_OUT); |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 187 | |
Michalis Spyrou | d473386 | 2019-07-09 14:21:06 +0100 | [diff] [blame] | 188 | #ifdef SAMPLING_POLICY_TOP_LEFT |
Sang-Hoon Park | 94d5051 | 2020-07-02 10:49:39 +0100 | [diff] [blame] | 189 | float new_x = get_global_id(1) * scale_x; |
| 190 | float new_y = (get_global_id(2) % DEPTH_OUT) * scale_y; |
Michalis Spyrou | d473386 | 2019-07-09 14:21:06 +0100 | [diff] [blame] | 191 | #elif SAMPLING_POLICY_CENTER |
Sang-Hoon Park | 94d5051 | 2020-07-02 10:49:39 +0100 | [diff] [blame] | 192 | float new_x = (get_global_id(1) + 0.5f) * scale_x; |
| 193 | float new_y = ((get_global_id(2) % DEPTH_OUT) + 0.5f) * scale_y; |
Michalis Spyrou | d473386 | 2019-07-09 14:21:06 +0100 | [diff] [blame] | 194 | #else /* SAMPLING_POLICY */ |
| 195 | #error("Unsupported sampling policy"); |
| 196 | #endif /* SAMPLING_POLICY */ |
Sang-Hoon Park | 94d5051 | 2020-07-02 10:49:39 +0100 | [diff] [blame] | 197 | #ifdef ALIGN_CORNERS |
| 198 | new_x = round(new_x); |
| 199 | new_y = round(new_y); |
| 200 | #endif /* ALIGN_CORNERS */ |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 201 | const float clamped_x = clamp(new_x, 0.0f, input_width - 1); |
| 202 | const float clamped_y = clamp(new_y, 0.0f, input_height - 1); |
| 203 | |
Michalis Spyrou | 1f8db2b | 2018-12-10 16:19:20 +0000 | [diff] [blame] | 204 | *((__global DATA_TYPE *)out.ptr) = *((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x), convert_int(clamped_y), (get_global_id(2) / DEPTH_OUT))); |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | /** Performs scale on an image interpolating with the BILINEAR method. (NHWC) |
| 208 | * |
| 209 | * @note Sampling policy to be used is passed as -DSAMPLING_POLICY_(TYPE) e.g. -DSAMPLING_POLICY_TOP_LEFT |
| 210 | * @note If border mode replicate is used, is should be passed as -DBORDER_MODE_REPLICATE |
Michalis Spyrou | 1f8db2b | 2018-12-10 16:19:20 +0000 | [diff] [blame] | 211 | * @note Output tensor's depth should be given as a preprocessor argument using -DDEPTH_OUT=size. e.g. -DDEPTH=16 |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 212 | * |
| 213 | * @param[in] in_ptr Pointer to the source image. Supported data types: U8/S16/F16/F32. |
| 214 | * @param[in] in_stride_x Stride of the source image in X dimension (in bytes) |
| 215 | * @param[in] in_step_x src_stride_x * number of elements along X processed per workitem(in bytes) |
| 216 | * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes) |
| 217 | * @param[in] in_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) |
| 218 | * @param[in] in_stride_z Stride of the source image in Z dimension (in bytes) |
| 219 | * @param[in] in_step_z src_stride_z * number of elements along Z processed per workitem(in bytes) |
| 220 | * @param[in] in_offset_first_element_in_bytes The offset of the first element in the source image |
| 221 | * @param[out] out_ptr Pointer to the destination image. Supported data types: same as @p in_ptr |
| 222 | * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes) |
| 223 | * @param[in] out_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) |
| 224 | * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes) |
| 225 | * @param[in] out_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) |
| 226 | * @param[in] out_stride_z Stride of the destination image in Z dimension (in bytes) |
| 227 | * @param[in] out_step_z dst_stride_y * number of elements along Z processed per workitem(in bytes) |
| 228 | * @param[in] out_offset_first_element_in_bytes The offset of the first element in the destination image |
| 229 | * @param[in] input_width Input image width |
| 230 | * @param[in] input_height Input image height |
| 231 | * @param[in] scale_x The scale factor along x dimension |
| 232 | * @param[in] scale_y The scale factor along y dimension |
| 233 | */ |
| 234 | __kernel void scale_bilinear_nhwc( |
Michalis Spyrou | 1f8db2b | 2018-12-10 16:19:20 +0000 | [diff] [blame] | 235 | TENSOR4D_DECLARATION(in), |
| 236 | TENSOR4D_DECLARATION(out), |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 237 | const float input_width, |
| 238 | const float input_height, |
| 239 | const float scale_x, |
| 240 | const float scale_y) |
| 241 | { |
Michalis Spyrou | 1f8db2b | 2018-12-10 16:19:20 +0000 | [diff] [blame] | 242 | Tensor4D in = CONVERT_TO_TENSOR4D_STRUCT_NO_STEP(in, 0); |
| 243 | Tensor4D out = CONVERT_TO_TENSOR4D_STRUCT(out, DEPTH_OUT); |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 244 | |
| 245 | #ifdef SAMPLING_POLICY_TOP_LEFT |
| 246 | const float new_x = get_global_id(1) * scale_x; |
Michalis Spyrou | 1f8db2b | 2018-12-10 16:19:20 +0000 | [diff] [blame] | 247 | const float new_y = (get_global_id(2) % DEPTH_OUT) * scale_y; |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 248 | #elif SAMPLING_POLICY_CENTER |
| 249 | const float new_x = (get_global_id(1) + 0.5f) * scale_x - 0.5f; |
Michalis Spyrou | 1f8db2b | 2018-12-10 16:19:20 +0000 | [diff] [blame] | 250 | const float new_y = ((get_global_id(2) % DEPTH_OUT) + 0.5f) * scale_y - 0.5f; |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 251 | #else /* SAMPLING_POLICY */ |
| 252 | #error("Unsupported sampling policy"); |
| 253 | #endif /* SAMPLING_POLICY */ |
| 254 | |
| 255 | const float new_xf = floor(new_x); |
| 256 | const float new_yf = floor(new_y); |
| 257 | float clamped_x = clamp(new_xf, 0.0f, input_width - 1); |
| 258 | float clamped_x1 = clamp(new_xf + 1, 0.0f, input_width - 1); |
| 259 | float clamped_x_ = clamped_x; |
| 260 | float clamped_x1_ = clamped_x1; |
| 261 | const float clamped_y = clamp(new_yf, 0.0f, input_height - 1); |
| 262 | const float clamped_y1 = clamp(new_yf + 1, 0.0f, input_height - 1); |
| 263 | |
| 264 | #ifndef BORDER_MODE_REPLICATE |
| 265 | clamped_x1 = select(clamped_x1, 0.0f - BORDER_SIZE, new_yf + 1 < 0.f || new_yf + 1 > input_height - 1 || new_xf + 1 < 0.f || new_xf + 1 > input_width - 1); |
| 266 | clamped_x_ = select(clamped_x_, 0.0f - BORDER_SIZE, new_yf + 1 > input_height - 1 || new_xf < 0.f || new_xf > input_width - 1); |
| 267 | clamped_x = select(clamped_x, 0.0f - BORDER_SIZE, new_yf < 0.f || new_yf > input_height - 1 || new_xf < 0.f || new_xf > input_width - 1); |
| 268 | clamped_x1_ = select(clamped_x1_, 0.0f - BORDER_SIZE, new_xf + 1 < 0.f || new_xf + 1 > input_width - 1 || new_yf < 0.f || new_yf > input_height - 1); |
| 269 | #endif /* BORDER_MODE_REPLICATE */ |
| 270 | |
Michalis Spyrou | 1f8db2b | 2018-12-10 16:19:20 +0000 | [diff] [blame] | 271 | float4 ins = (float4)(*((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x), convert_int(clamped_y), (get_global_id(2) / DEPTH_OUT))), |
| 272 | *((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x1_), convert_int(clamped_y), (get_global_id(2) / DEPTH_OUT))), |
| 273 | *((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x_), convert_int(clamped_y1), (get_global_id(2) / DEPTH_OUT))), |
| 274 | *((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x1), convert_int(clamped_y1), (get_global_id(2) / DEPTH_OUT)))); |
Michalis Spyrou | 46da23f | 2018-04-10 13:41:30 +0100 | [diff] [blame] | 275 | |
| 276 | const float a = new_x - new_xf; |
| 277 | const float b = 1.f - a; |
| 278 | const float a1 = new_y - new_yf; |
| 279 | const float b1 = 1.f - a1; |
| 280 | const float fr = ((ins.s0 * b * b1) + (ins.s1 * a * b1) + (ins.s2 * b * a1) + (ins.s3 * a * a1)); |
| 281 | |
| 282 | *((__global DATA_TYPE *)out.ptr) = CONVERT(fr, DATA_TYPE); |
| 283 | } |
Michalis Spyrou | 1f8db2b | 2018-12-10 16:19:20 +0000 | [diff] [blame] | 284 | #endif /* defined(DEPTH_OUT) */ |