mirror of
https://github.com/RGBCube/serenity
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92 lines
2.3 KiB
C++
92 lines
2.3 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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Context::Surface Context::create_surface(int width, int height)
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{
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EGLint const pbuffer_attributes[] = {
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EGL_WIDTH,
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width,
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EGL_HEIGHT,
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height,
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EGL_NONE,
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};
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auto egl_surface = eglCreatePbufferSurface(m_egl_display, m_egl_config, pbuffer_attributes);
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return { egl_surface };
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}
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void Context::destroy_surface(Surface surface)
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{
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if (surface.egl_surface)
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eglDestroySurface(m_egl_display, surface.egl_surface);
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}
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void Context::set_active_surface(Surface surface)
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{
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VERIFY(eglMakeCurrent(m_egl_display, surface.egl_surface, surface.egl_surface, m_egl_context));
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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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