GLExtensions.cpp revision 875d8e1323536e16dcfc90c9674d7ad32116a69a 
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
23namespace android {
24// ---------------------------------------------------------------------------
25
26ANDROID_SINGLETON_STATIC_INSTANCE( GLExtensions )
27
28GLExtensions::GLExtensions()
29    : mHaveFramebufferObject(false)
30{
31}
32
33void 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
60bool GLExtensions::hasExtension(char const* extension) const
61{
62    const String8 s(extension);
63    return mExtensionList.indexOf(s) >= 0;
64}
65
66char const* GLExtensions::getVendor() const {
67    return mVendor.string();
68}
69
70char const* GLExtensions::getRenderer() const {
71    return mRenderer.string();
72}
73
74char const* GLExtensions::getVersion() const {
75    return mVersion.string();
76}
77
78char const* GLExtensions::getExtension() const {
79    return mExtensions.string();
80}
81
82// ---------------------------------------------------------------------------
83}; // namespace android
84