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| 1 | |
| 2 /* | 1 /* |
| 3 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
| 4 * | 3 * |
| 5 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 6 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 7 */ | 6 */ |
| 8 #include "SkUnPreMultiply.h" | 7 #include "SkUnPreMultiply.h" |
| 9 #include "SkColorPriv.h" | 8 #include "SkColorPriv.h" |
| 10 | 9 |
| 11 SkColor SkUnPreMultiply::PMColorToColor(SkPMColor c) { | 10 SkColor SkUnPreMultiply::PMColorToColor(SkPMColor c) { |
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| 80 // test the result | 79 // test the result |
| 81 for (int j = 1; j <= i; j++) { | 80 for (int j = 1; j <= i; j++) { |
| 82 uint32_t test = (j * scale + (1 << 23)) >> 24; | 81 uint32_t test = (j * scale + (1 << 23)) >> 24; |
| 83 uint32_t div = roundf(j * 255.0f / i); | 82 uint32_t div = roundf(j * 255.0f / i); |
| 84 int diff = SkAbs32(test - div); | 83 int diff = SkAbs32(test - div); |
| 85 SkASSERT(diff <= 1 && test <= 255); | 84 SkASSERT(diff <= 1 && test <= 255); |
| 86 } | 85 } |
| 87 } | 86 } |
| 88 } | 87 } |
| 89 #endif | 88 #endif |
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