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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include "GLExtensions.h"
namespace android {
// ---------------------------------------------------------------------------
ANDROID_SINGLETON_STATIC_INSTANCE( GLExtensions )
GLExtensions::GLExtensions()
: mHaveTextureExternal(false),
mHaveNpot(false),
mHaveDirectTexture(false)
{
}
void GLExtensions::initWithGLStrings(
GLubyte const* vendor,
GLubyte const* renderer,
GLubyte const* version,
GLubyte const* extensions,
char const* egl_vendor,
char const* egl_version,
char const* egl_extensions)
{
mVendor = (char const*)vendor;
mRenderer = (char const*)renderer;
mVersion = (char const*)version;
mExtensions = (char const*)extensions;
mEglVendor = egl_vendor;
mEglVersion = egl_version;
mEglExtensions = egl_extensions;
char const* curr = (char const*)extensions;
char const* head = curr;
do {
head = strchr(curr, ' ');
String8 s(curr, head ? head-curr : strlen(curr));
if (s.length()) {
mExtensionList.add(s);
}
curr = head+1;
} while (head);
curr = egl_extensions;
head = curr;
do {
head = strchr(curr, ' ');
String8 s(curr, head ? head-curr : strlen(curr));
if (s.length()) {
mExtensionList.add(s);
}
curr = head+1;
} while (head);
#ifdef EGL_ANDROID_image_native_buffer
if (hasExtension("GL_OES_EGL_image") &&
(hasExtension("EGL_KHR_image_base") || hasExtension("EGL_KHR_image")) &&
hasExtension("EGL_ANDROID_image_native_buffer"))
{
mHaveDirectTexture = true;
}
#else
#warning "EGL_ANDROID_image_native_buffer not supported"
#endif
if (hasExtension("GL_ARB_texture_non_power_of_two")) {
mHaveNpot = true;
}
if (hasExtension("GL_OES_EGL_image_external")) {
mHaveTextureExternal = true;
} else if (strstr(mRenderer.string(), "Adreno")) {
// hack for Adreno 200
mHaveTextureExternal = true;
}
if (hasExtension("GL_OES_framebuffer_object")) {
mHaveFramebufferObject = true;
}
}
bool GLExtensions::hasExtension(char const* extension) const
{
const String8 s(extension);
return mExtensionList.indexOf(s) >= 0;
}
char const* GLExtensions::getVendor() const {
return mVendor.string();
}
char const* GLExtensions::getRenderer() const {
return mRenderer.string();
}
char const* GLExtensions::getVersion() const {
return mVersion.string();
}
char const* GLExtensions::getExtension() const {
return mExtensions.string();
}
char const* GLExtensions::getEglVendor() const {
return mEglVendor.string();
}
char const* GLExtensions::getEglVersion() const {
return mEglVersion.string();
}
char const* GLExtensions::getEglExtension() const {
return mEglExtensions.string();
}
// ---------------------------------------------------------------------------
}; // namespace android
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