2 * Copyright (C) 2010 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
18 #include "GammaFontRenderer.h"
19 #include "Properties.h"
22 namespace uirenderer {
24 GammaFontRenderer::GammaFontRenderer() {
25 INIT_LOGD("Creating lookup gamma font renderer");
27 // Compute the gamma tables
28 const float gamma = 1.0f / Properties::textGamma;
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));
35 void GammaFontRenderer::endPrecaching() {
37 mRenderer->endPrecaching();
41 }; // namespace uirenderer
42 }; // namespace android