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    : mHaveTextureExternal(false),
30      mHaveNpot(false),
31      mHaveDirectTexture(false)
32{
33}
34
35void GLExtensions::initWithGLStrings(
36        GLubyte const* vendor,
37        GLubyte const* renderer,
38        GLubyte const* version,
39        GLubyte const* extensions,
40        char const* egl_vendor,
41        char const* egl_version,
42        char const* egl_extensions)
43{
44    mVendor     = (char const*)vendor;
45    mRenderer   = (char const*)renderer;
46    mVersion    = (char const*)version;
47    mExtensions = (char const*)extensions;
48    mEglVendor     = egl_vendor;
49    mEglVersion    = egl_version;
50    mEglExtensions = egl_extensions;
51
52    char const* curr = (char const*)extensions;
53    char const* head = curr;
54    do {
55        head = strchr(curr, ' ');
56        String8 s(curr, head ? head-curr : strlen(curr));
57        if (s.length()) {
58            mExtensionList.add(s);
59        }
60        curr = head+1;
61    } while (head);
62
63    curr = egl_extensions;
64    head = curr;
65    do {
66        head = strchr(curr, ' ');
67        String8 s(curr, head ? head-curr : strlen(curr));
68        if (s.length()) {
69            mExtensionList.add(s);
70        }
71        curr = head+1;
72    } while (head);
73
74#ifdef EGL_ANDROID_image_native_buffer
75    if (hasExtension("GL_OES_EGL_image") &&
76        (hasExtension("EGL_KHR_image_base") || hasExtension("EGL_KHR_image")) &&
77        hasExtension("EGL_ANDROID_image_native_buffer"))
78    {
79        mHaveDirectTexture = true;
80    }
81#else
82#warning "EGL_ANDROID_image_native_buffer not supported"
83#endif
84
85    if (hasExtension("GL_ARB_texture_non_power_of_two")) {
86        mHaveNpot = true;
87    }
88
89    if (hasExtension("GL_OES_EGL_image_external")) {
90        mHaveTextureExternal = true;
91    } else if (strstr(mRenderer.string(), "Adreno")) {
92        // hack for Adreno 200
93        mHaveTextureExternal = true;
94    }
95
96    if (hasExtension("GL_OES_framebuffer_object")) {
97        mHaveFramebufferObject = true;
98    }
99}
100
101bool GLExtensions::hasExtension(char const* extension) const
102{
103    const String8 s(extension);
104    return mExtensionList.indexOf(s) >= 0;
105}
106
107char const* GLExtensions::getVendor() const {
108    return mVendor.string();
109}
110
111char const* GLExtensions::getRenderer() const {
112    return mRenderer.string();
113}
114
115char const* GLExtensions::getVersion() const {
116    return mVersion.string();
117}
118
119char const* GLExtensions::getExtension() const {
120    return mExtensions.string();
121}
122
123char const* GLExtensions::getEglVendor() const {
124    return mEglVendor.string();
125}
126
127char const* GLExtensions::getEglVersion() const {
128    return mEglVersion.string();
129}
130
131char const* GLExtensions::getEglExtension() const {
132    return mEglExtensions.string();
133}
134
135
136// ---------------------------------------------------------------------------
137}; // namespace android
138