1 files changed, 85 insertions, 0 deletions
diff --git a/src/runtime/GLES_COMPUTE/GCHelpers.cpp b/src/runtime/GLES_COMPUTE/GCHelpers.cpp
new file mode 100644
index 0000000000..df2f4f5e6e
--- /dev/null
+++ b/src/runtime/GLES_COMPUTE/GCHelpers.cpp
@@ -0,0 +1,85 @@
+/*
+ * 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