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/*
* Copyright (C) 2016 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 "GLESVersionDetector.h"
#include "DispatchTables.h"
#include "emugl/common/feature_control.h"
#include <algorithm>
GLESDispatchMaxVersion calcMaxVersionFromDispatch() {
// Detect the proper OpenGL ES version to advertise to the system.
//
// If the underlying glesv2 library also is on top of system OpenGL,
// we assume existence of a function called "gl_dispatch_get_max_version"
// which matches the return type of gles2_dispatch_get_max_version,
// and allows us to scale back if the underlying host machine
// doesn't actually suppport a particular GLES version.
if (!emugl_feature_is_enabled(android::featurecontrol::GLESDynamicVersion))
return GLES_DISPATCH_MAX_VERSION_2;
GLESDispatchMaxVersion underlying_gles2_lib_max =
gles2_dispatch_get_max_version();
if (s_gles2.gl_dispatch_get_max_version) {
GLESDispatchMaxVersion underlying_gl_lib_max =
(GLESDispatchMaxVersion)s_gles2.gl_dispatch_get_max_version();
return std::min(underlying_gl_lib_max, underlying_gles2_lib_max);
} else {
return underlying_gles2_lib_max;
}
return GLES_DISPATCH_MAX_VERSION_2;
}
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