mirror of
https://github.com/RGBCube/serenity
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Framebuffer object is allocated using OpenGL's API and is not platform specific which means it could be used on both macOS and Linux unlike EGL specific PBuffer.
67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
/*
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* Copyright (c) 2023, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibAccelGfx/Context.h>
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namespace AccelGfx {
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Context& Context::the()
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{
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static OwnPtr<Context> s_the;
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if (!s_the)
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s_the = Context::create();
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return *s_the;
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}
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OwnPtr<Context> Context::create()
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{
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EGLDisplay egl_display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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EGLint major;
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EGLint minor;
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eglInitialize(egl_display, &major, &minor);
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EGLBoolean ok = eglBindAPI(EGL_OPENGL_API);
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if (ok == EGL_FALSE) {
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dbgln("eglBindAPI failed");
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VERIFY_NOT_REACHED();
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}
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static EGLint const config_attributes[] = {
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EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
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EGL_BLUE_SIZE, 8,
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EGL_GREEN_SIZE, 8,
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EGL_RED_SIZE, 8,
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EGL_DEPTH_SIZE, 8,
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EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
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EGL_NONE
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};
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EGLConfig egl_config;
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EGLint num_configs;
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eglChooseConfig(egl_display, config_attributes, &egl_config, 1, &num_configs);
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static EGLint const context_attributes[] = {
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EGL_CONTEXT_MAJOR_VERSION, 3,
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EGL_CONTEXT_MINOR_VERSION, 3,
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EGL_NONE
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};
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EGLContext egl_context = eglCreateContext(egl_display, egl_config, EGL_NO_CONTEXT, context_attributes);
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if (egl_context == EGL_FALSE) {
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dbgln("eglCreateContext failed");
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VERIFY_NOT_REACHED();
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}
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EGLBoolean result = eglMakeCurrent(egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, egl_context);
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if (result == EGL_FALSE) {
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dbgln("eglMakeCurrent failed");
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VERIFY_NOT_REACHED();
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}
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return make<Context>(egl_display, egl_context, egl_config);
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}
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}
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