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      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 
     17 #include <stdlib.h>
     18 #include <stdio.h>
     19 #include <stdint.h>
     20 
     21 #include "GLExtensions.h"
     22 
     23 namespace android {
     24 // ---------------------------------------------------------------------------
     25 
     26 ANDROID_SINGLETON_STATIC_INSTANCE( GLExtensions )
     27 
     28 GLExtensions::GLExtensions()
     29     : mHaveFramebufferObject(false)
     30 {
     31 }
     32 
     33 void GLExtensions::initWithGLStrings(
     34         GLubyte const* vendor,
     35         GLubyte const* renderer,
     36         GLubyte const* version,
     37         GLubyte const* extensions)
     38 {
     39     mVendor     = (char const*)vendor;
     40     mRenderer   = (char const*)renderer;
     41     mVersion    = (char const*)version;
     42     mExtensions = (char const*)extensions;
     43 
     44     char const* curr = (char const*)extensions;
     45     char const* head = curr;
     46     do {
     47         head = strchr(curr, ' ');
     48         String8 s(curr, head ? head-curr : strlen(curr));
     49         if (s.length()) {
     50             mExtensionList.add(s);
     51         }
     52         curr = head+1;
     53     } while (head);
     54 
     55     if (hasExtension("GL_OES_framebuffer_object")) {
     56         mHaveFramebufferObject = true;
     57     }
     58 }
     59 
     60 bool GLExtensions::hasExtension(char const* extension) const
     61 {
     62     const String8 s(extension);
     63     return mExtensionList.indexOf(s) >= 0;
     64 }
     65 
     66 char const* GLExtensions::getVendor() const {
     67     return mVendor.string();
     68 }
     69 
     70 char const* GLExtensions::getRenderer() const {
     71     return mRenderer.string();
     72 }
     73 
     74 char const* GLExtensions::getVersion() const {
     75     return mVersion.string();
     76 }
     77 
     78 char const* GLExtensions::getExtension() const {
     79     return mExtensions.string();
     80 }
     81 
     82 // ---------------------------------------------------------------------------
     83 }; // namespace android
     84