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Romain Guyb45c0c92010-08-26 20:35:23 -07001/*
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 Guyc9855a52011-01-21 21:14:15 -080017#include "Debug.h"
Romain Guyb45c0c92010-08-26 20:35:23 -070018#include "GammaFontRenderer.h"
19#include "Properties.h"
20
21namespace android {
22namespace uirenderer {
23
Romain Guyb1d0a4e2012-07-13 18:25:35 -070024GammaFontRenderer::GammaFontRenderer() {
Romain Guyb1d0a4e2012-07-13 18:25:35 -070025 INIT_LOGD("Creating lookup gamma font renderer");
Romain Guyb45c0c92010-08-26 20:35:23 -070026
27 // Compute the gamma tables
Chris Craikc08820f2015-09-22 14:22:29 -070028 const float gamma = 1.0f / Properties::textGamma;
Romain Guy6e25e382012-07-18 15:50:29 -070029
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 Guy6e25e382012-07-18 15:50:29 -070033}
34
Chris Craikc08820f2015-09-22 14:22:29 -070035void GammaFontRenderer::endPrecaching() {
Romain Guycf51a412013-04-08 19:40:31 -070036 if (mRenderer) {
37 mRenderer->endPrecaching();
38 }
39}
40
Romain Guyb45c0c92010-08-26 20:35:23 -070041}; // namespace uirenderer
42}; // namespace android