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      1 /*
      2  * Copyright (C) 2013 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 
     17 #define LOG_TAG "OpenGLRenderer"
     18 
     19 #include <utils/Log.h>
     20 
     21 #include "Caches.h"
     22 #include "Texture.h"
     23 
     24 namespace android {
     25 namespace uirenderer {
     26 
     27 Texture::Texture(): id(0), generation(0), blend(false), width(0), height(0),
     28         cleanup(false), bitmapSize(0), mipMap(false), uvMapper(NULL),
     29         mWrapS(GL_CLAMP_TO_EDGE), mWrapT(GL_CLAMP_TO_EDGE),
     30         mMinFilter(GL_NEAREST), mMagFilter(GL_NEAREST),
     31         mFirstFilter(true), mFirstWrap(true), mCaches(Caches::getInstance()) {
     32 }
     33 
     34 Texture::Texture(Caches& caches): id(0), generation(0), blend(false), width(0), height(0),
     35         cleanup(false), bitmapSize(0), mipMap(false), uvMapper(NULL),
     36         mWrapS(GL_CLAMP_TO_EDGE), mWrapT(GL_CLAMP_TO_EDGE),
     37         mMinFilter(GL_NEAREST), mMagFilter(GL_NEAREST),
     38         mFirstFilter(true), mFirstWrap(true), mCaches(caches) {
     39 }
     40 
     41 void Texture::setWrapST(GLenum wrapS, GLenum wrapT, bool bindTexture, bool force,
     42         GLenum renderTarget) {
     43 
     44     if (mFirstWrap || force || wrapS != mWrapS || wrapT != mWrapT) {
     45         mFirstWrap = false;
     46 
     47         mWrapS = wrapS;
     48         mWrapT = wrapT;
     49 
     50         if (bindTexture) {
     51             mCaches.bindTexture(renderTarget, id);
     52         }
     53 
     54         glTexParameteri(renderTarget, GL_TEXTURE_WRAP_S, wrapS);
     55         glTexParameteri(renderTarget, GL_TEXTURE_WRAP_T, wrapT);
     56     }
     57 }
     58 
     59 void Texture::setFilterMinMag(GLenum min, GLenum mag, bool bindTexture, bool force,
     60         GLenum renderTarget) {
     61 
     62     if (mFirstFilter || force || min != mMinFilter || mag != mMagFilter) {
     63         mFirstFilter = false;
     64 
     65         mMinFilter = min;
     66         mMagFilter = mag;
     67 
     68         if (bindTexture) {
     69             mCaches.bindTexture(renderTarget, id);
     70         }
     71 
     72         if (mipMap && min == GL_LINEAR) min = GL_LINEAR_MIPMAP_LINEAR;
     73 
     74         glTexParameteri(renderTarget, GL_TEXTURE_MIN_FILTER, min);
     75         glTexParameteri(renderTarget, GL_TEXTURE_MAG_FILTER, mag);
     76     }
     77 }
     78 
     79 void Texture::deleteTexture() const {
     80     mCaches.deleteTexture(id);
     81 }
     82 
     83 }; // namespace uirenderer
     84 }; // namespace android
     85