Romain Guy | b45c0c9 | 2010-08-26 20:35:23 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 The Android Open Source Project |
| 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 | |
Romain Guy | c9855a5 | 2011-01-21 21:14:15 -0800 | [diff] [blame] | 17 | #include "Debug.h" |
Romain Guy | b45c0c9 | 2010-08-26 20:35:23 -0700 | [diff] [blame] | 18 | #include "GammaFontRenderer.h" |
| 19 | #include "Properties.h" |
| 20 | |
| 21 | namespace android { |
| 22 | namespace uirenderer { |
| 23 | |
Romain Guy | b1d0a4e | 2012-07-13 18:25:35 -0700 | [diff] [blame] | 24 | GammaFontRenderer::GammaFontRenderer() { |
Romain Guy | b1d0a4e | 2012-07-13 18:25:35 -0700 | [diff] [blame] | 25 | INIT_LOGD("Creating lookup gamma font renderer"); |
Romain Guy | b45c0c9 | 2010-08-26 20:35:23 -0700 | [diff] [blame] | 26 | |
| 27 | // Compute the gamma tables |
Chris Craik | c08820f | 2015-09-22 14:22:29 -0700 | [diff] [blame] | 28 | const float gamma = 1.0f / Properties::textGamma; |
Romain Guy | 6e25e38 | 2012-07-18 15:50:29 -0700 | [diff] [blame] | 29 | |
| 30 | for (uint32_t i = 0; i <= 255; i++) { |
| 31 | mGammaTable[i] = uint8_t((float)::floor(pow(i / 255.0f, gamma) * 255.0f + 0.5f)); |
| 32 | } |
Romain Guy | 6e25e38 | 2012-07-18 15:50:29 -0700 | [diff] [blame] | 33 | } |
| 34 | |
Chris Craik | c08820f | 2015-09-22 14:22:29 -0700 | [diff] [blame] | 35 | void GammaFontRenderer::endPrecaching() { |
Romain Guy | cf51a41 | 2013-04-08 19:40:31 -0700 | [diff] [blame] | 36 | if (mRenderer) { |
| 37 | mRenderer->endPrecaching(); |
| 38 | } |
| 39 | } |
| 40 | |
Romain Guy | b45c0c9 | 2010-08-26 20:35:23 -0700 | [diff] [blame] | 41 | }; // namespace uirenderer |
| 42 | }; // namespace android |