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/*
* Copyright (C) 2011 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 "RenderContext.h"
#include <assert.h>
#include "GLESVersionDetector.h"
#include "OpenGLESDispatch/EGLDispatch.h"
#include "OpenGLESDispatch/GLESv1Dispatch.h"
#include "base/containers/SmallVector.h"
#include "host-common/feature_control.h"
#include "host-common/logging.h"
#include "host-common/misc.h"
RenderContext* RenderContext::create(EGLDisplay display,
EGLConfig config,
EGLContext sharedContext,
HandleType hndl,
GLESApi version) {
return createImpl(display, config, sharedContext, hndl, version, nullptr);
}
RenderContext* RenderContext::createImpl(EGLDisplay display,
EGLConfig config,
EGLContext sharedContext,
HandleType hndl,
GLESApi version,
android::base::Stream *stream) {
GLESApi clientVersion = version;
int majorVersion = clientVersion;
int minorVersion = 0;
if (version == GLESApi_3_0) {
majorVersion = 3;
minorVersion = 0;
} else if (version == GLESApi_3_1) {
majorVersion = 3;
minorVersion = 1;
}
android::base::SmallFixedVector<EGLint, 7> contextAttribs = {
EGL_CONTEXT_CLIENT_VERSION, majorVersion,
EGL_CONTEXT_MINOR_VERSION_KHR, minorVersion,
};
if (shouldEnableCoreProfile()) {
contextAttribs.push_back(EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR);
contextAttribs.push_back(EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR);
}
contextAttribs.push_back(EGL_NONE);
EGLContext context;
if (stream && s_egl.eglLoadContext) {
context = s_egl.eglLoadContext(display, &contextAttribs[0], stream);
} else {
context = s_egl.eglCreateContext(
display, config, sharedContext, &contextAttribs[0]);
}
if (context == EGL_NO_CONTEXT) {
ERR("Failed to create context (EGL_NO_CONTEXT result)");
return NULL;
}
return new RenderContext(display, context, hndl, clientVersion, NULL);
}
RenderContext::RenderContext(EGLDisplay display,
EGLContext context,
HandleType hndl,
GLESApi version,
void* emulatedGLES1Context) :
mDisplay(display),
mContext(context),
mHndl(hndl),
mVersion(version),
mContextData() { }
RenderContext::~RenderContext() {
if (mContext != EGL_NO_CONTEXT) {
s_egl.eglDestroyContext(mDisplay, mContext);
}
}
void RenderContext::onSave(android::base::Stream* stream) {
stream->putBe32(mHndl);
stream->putBe32(static_cast<uint32_t>(mVersion));
assert(s_egl.eglCreateContext);
if (s_egl.eglSaveContext) {
s_egl.eglSaveContext(mDisplay, mContext, static_cast<EGLStreamKHR>(stream));
}
}
RenderContext *RenderContext::onLoad(android::base::Stream* stream,
EGLDisplay display) {
HandleType hndl = static_cast<HandleType>(stream->getBe32());
GLESApi version = static_cast<GLESApi>(stream->getBe32());
return createImpl(display, (EGLConfig)0, EGL_NO_CONTEXT, hndl, version,
stream);
}
GLESApi RenderContext::clientVersion() const {
return mVersion;
}
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