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1 /* | |
2 * Copyright 2013 Google Inc. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 | |
8 #pragma OPENCL_EXTENSION cl_khr_global_int32_base_atomics | |
9 | |
10 const sampler_t gInSampler = CLK_NORMALIZED_COORDS_FALSE | | |
11 CLK_ADDRESS_CLAMP_TO_EDGE | | |
12 CLK_FILTER_NEAREST; | |
13 | |
14 __kernel void diff(read_only image2d_t baseline, read_only image2d_t test, | |
15 __global int* result, __global int2* poi) { | |
16 int2 coord = (int2)(get_global_id(0), get_global_id(1)); | |
17 uint4 baselinePixel = read_imageui(baseline, gInSampler, coord); | |
18 uint4 testPixel = read_imageui(test, gInSampler, coord); | |
19 int4 pixelCompare = baselinePixel == testPixel; | |
20 if (baselinePixel.x != testPixel.x || | |
21 baselinePixel.y != testPixel.y || | |
22 baselinePixel.z != testPixel.z || | |
23 baselinePixel.w != testPixel.w) { | |
24 | |
25 int poiIndex = atomic_inc(result); | |
26 poi[poiIndex] = coord; | |
27 } | |
28 } | |
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