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      1 /*
      2  * Copyright (C) 2015 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 #include "renderstate/PixelBufferState.h"
     17 
     18 namespace android {
     19 namespace uirenderer {
     20 
     21 PixelBufferState::PixelBufferState() : mCurrentPixelBuffer(0) {}
     22 
     23 bool PixelBufferState::bind(GLuint buffer) {
     24     if (mCurrentPixelBuffer != buffer) {
     25         glBindBuffer(GL_PIXEL_UNPACK_BUFFER, buffer);
     26         mCurrentPixelBuffer = buffer;
     27         return true;
     28     }
     29     return false;
     30 }
     31 
     32 bool PixelBufferState::unbind() {
     33     if (mCurrentPixelBuffer) {
     34         glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
     35         mCurrentPixelBuffer = 0;
     36         return true;
     37     }
     38     return false;
     39 }
     40 
     41 } /* namespace uirenderer */
     42 } /* namespace android */
     43