| /* |
| * Copyright (c) 2016, 2017 ARM Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| layout(local_size_x = LOCAL_SIZE_X, local_size_y = LOCAL_SIZE_Y, local_size_z = LOCAL_SIZE_Z) in; |
| |
| #include "helpers_cs.h" |
| |
| /** Performs an affine transformation on an image interpolating with the NEAREAST NEIGHBOUR method. Input and output are single channel FP16. |
| * |
| * @param[in] src_ptr Pointer to the source tensor. Supported data types: FP16. |
| * @param[in] src_attrs The attributes of the source tensor |
| * @param[out] dst_ptr Pointer to the destination tensor. Supported data types: FP16. (Must be the same as the input) |
| * @param[in] dst_attrs The attributes of the destination tensor |
| * @param[in] input_width Input image width |
| * @param[in] input_height Input image height |
| * @param[in] scale_x The scale factor along x dimension |
| * @param[in] scale_y The scale factor along y dimension |
| */ |
| SHADER_PARAMS_DECLARATION |
| { |
| ImageAttributes src_attrs; |
| ImageAttributes dst_attrs; |
| float input_width; |
| float input_height; |
| float scale_x; |
| float scale_y; |
| }; |
| |
| #if defined(DATA_TYPE_FP16) |
| #if defined(SCALE_NEAREST_GENERIC) |
| TENSOR_DECLARATION(1, srcBuffer, uint, src_ptr, src_shift, 2, readonly); |
| TENSOR_DECLARATION(2, dstBuffer, uvec2, dst_ptr, dst_shift, 3, writeonly); |
| |
| vec4[2] transform_nearest(vec2 coord, vec2 scale) |
| { |
| vec4 in_x_coords = vec4(coord.x, 1.f + coord.x, 2.f + coord.x, 3.f + coord.x); |
| |
| vec4[2] t; |
| t[0] = (in_x_coords + (vec4(0.5f))) * scale.x; |
| t[1] = vec4((coord.y + 0.5f) * scale.y); |
| |
| return t; |
| } |
| |
| vec4[2] clamp_to_border_with_size(vec4[2] coords, float width, float height, float border_size) |
| { |
| vec4[2] c; |
| c[0] = clamp(coords[0], 0.0f - border_size, width - 1.f + border_size); |
| c[1] = clamp(coords[1], 0.0f - border_size, height - 1.f + border_size); |
| |
| return c; |
| } |
| |
| void main() |
| { |
| ImageIterator src_iter = CONVERT_TO_IMAGE_ITERATOR_NO_STEP(src_attrs, src_shift); |
| ImageIterator dst_iter = CONVERT_TO_IMAGE_ITERATOR(dst_attrs, dst_shift); |
| |
| vec2 r = vec2(scale_x, scale_y); |
| vec4[2] tc = clamp_to_border_with_size(transform_nearest(vec2(gl_GlobalInvocationID.x << uint(2), gl_GlobalInvocationID.y), r), input_width, input_height, float(BORDER_SIZE)); |
| |
| mediump vec2 s = vec2(0.0f); |
| mediump vec4 d = vec4(0.0f); |
| |
| for(int i = 0; i < 4; i++) |
| { |
| uint offset = image_offset_in_bytes(src_iter, int(tc[0][i]), int(tc[1][i])); |
| |
| s = LOAD_UNPACK2_HALF(src_ptr, uint(offset >> src_shift)); |
| |
| if(offset % uint(4) == uint(0)) |
| { |
| d[i] = s.x; |
| } |
| else |
| { |
| d[i] = s.y; |
| } |
| } |
| |
| STORE_PACK4_CURRENT_ITEM_HALF(dst_ptr, dst_iter, d); |
| } |
| #elif defined(SCALE_NEAREST_8X) /* SCALE_NEAREST_GENERIC */ |
| TENSOR_DECLARATION(1, srcBuffer, uvec2, src_ptr, src_shift, 3, readonly); |
| TENSOR_DECLARATION(2, dstBuffer, uvec4, dst_ptr, dst_shift, 4, writeonly); |
| |
| void main() |
| { |
| ImageIterator src_iter = CONVERT_TO_IMAGE_ITERATOR_NO_STEP(src_attrs, src_shift); |
| ImageIterator dst_iter = CONVERT_TO_IMAGE_ITERATOR(dst_attrs, dst_shift); |
| |
| uvec2 tc = uvec2(gl_GlobalInvocationID.x << uint(2), gl_GlobalInvocationID.y >> uint(1)); |
| |
| mediump vec4 s = vec4(0.0f); |
| mediump vec4[2] d; |
| |
| uint offset = image_offset_in_bytes(src_iter, int(tc[0]), int(tc[1])); |
| s = LOAD_UNPACK4_HALF(src_ptr, uint(offset >> src_shift)); |
| |
| d[0] = vec4(s.x, s.x, s.y, s.y); |
| d[1] = vec4(s.z, s.z, s.w, s.w); |
| |
| STORE_PACK8_CURRENT_ITEM_HALF(dst_ptr, dst_iter, d); |
| } |
| #endif /* SCALE_NEAREST_GENERIC */ |
| |
| #else /* DATA_TYPE_FP16 */ |
| #error Data type not supported |
| #endif /* DATA_TYPE_FP16 */ |