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/*
* Copyright (c) 2019 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "arm_compute/runtime/GLES_COMPUTE/GCHelpers.h"
#include "arm_compute/core/Error.h"
namespace arm_compute
{
std::tuple<EGLDisplay, EGLContext, EGLBoolean> create_opengl_display_and_context()
{
EGLBoolean res;
EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
ARM_COMPUTE_ERROR_ON_MSG_VAR(display == EGL_NO_DISPLAY, "Failed to get display: 0x%x.", eglGetError());
res = eglInitialize(display, nullptr, nullptr);
ARM_COMPUTE_ERROR_ON_MSG_VAR(res == EGL_FALSE, "Failed to initialize egl: 0x%x.", eglGetError());
ARM_COMPUTE_UNUSED(res);
const char *egl_extension_st = eglQueryString(display, EGL_EXTENSIONS);
ARM_COMPUTE_ERROR_ON_MSG((strstr(egl_extension_st, "EGL_KHR_create_context") == nullptr), "Failed to query EGL_KHR_create_context");
ARM_COMPUTE_ERROR_ON_MSG((strstr(egl_extension_st, "EGL_KHR_surfaceless_context") == nullptr), "Failed to query EGL_KHR_surfaceless_context");
ARM_COMPUTE_UNUSED(egl_extension_st);
const std::array<EGLint, 3> config_attribs =
{
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES3_BIT_KHR,
EGL_NONE
};
EGLConfig cfg;
EGLint count;
res = eglChooseConfig(display, config_attribs.data(), &cfg, 1, &count);
ARM_COMPUTE_ERROR_ON_MSG_VAR(res == EGL_FALSE, "Failed to choose config: 0x%x.", eglGetError());
ARM_COMPUTE_UNUSED(res);
res = eglBindAPI(EGL_OPENGL_ES_API);
ARM_COMPUTE_ERROR_ON_MSG_VAR(res == EGL_FALSE, "Failed to bind api: 0x%x.", eglGetError());
const std::array<EGLint, 3> attribs =
{
EGL_CONTEXT_CLIENT_VERSION, 3,
EGL_NONE
};
EGLContext context = eglCreateContext(display,
cfg,
EGL_NO_CONTEXT,
attribs.data());
ARM_COMPUTE_ERROR_ON_MSG_VAR(context == EGL_NO_CONTEXT, "Failed to create context: 0x%x.", eglGetError());
ARM_COMPUTE_UNUSED(res);
res = eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, context);
ARM_COMPUTE_ERROR_ON_MSG_VAR(res == EGL_FALSE, "Failed to make current: 0x%x.", eglGetError());
ARM_COMPUTE_UNUSED(res);
return std::make_tuple(display, context, res);
}
} // namespace arm_compute
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