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https://git.eden-emu.dev/eden-emu/eden
synced 2026-05-20 22:47:04 +02:00
feb8c5f88e
Ported from QML branch. Main "big" change is that EmuThread is now a shared state in QtCommon, not individually managed/passed around by GRenderWindow and MainWindow. Signed-off-by: crueter <crueter@eden-emu.dev> Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3916 Reviewed-by: Lizzie <lizzie@eden-emu.dev> Reviewed-by: MaranBr <maranbr@eden-emu.dev>
107 lines
3.7 KiB
C++
107 lines
3.7 KiB
C++
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
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// SPDX-License-Identifier: GPL-3.0-or-later
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#pragma once
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#include <QSurface>
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#include "common/logging.h"
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#include "common/settings.h"
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#include "core/frontend/graphics_context.h"
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#ifdef HAS_OPENGL
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#include <QOffscreenSurface>
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#include <QOpenGLContext>
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#endif
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#ifdef HAS_OPENGL
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class OpenGLSharedContext : public Core::Frontend::GraphicsContext {
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public:
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/// Create the original context that should be shared from
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explicit OpenGLSharedContext(QSurface* surface_) : surface{surface_} {
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QSurfaceFormat format;
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format.setVersion(4, 6);
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format.setProfile(QSurfaceFormat::CompatibilityProfile);
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format.setOption(QSurfaceFormat::FormatOption::DeprecatedFunctions);
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if (Settings::values.renderer_debug) {
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format.setOption(QSurfaceFormat::FormatOption::DebugContext);
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}
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// TODO: expose a setting for buffer value (ie default/single/double/triple)
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format.setSwapBehavior(QSurfaceFormat::DefaultSwapBehavior);
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format.setSwapInterval(0);
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context = std::make_unique<QOpenGLContext>();
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context->setFormat(format);
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if (!context->create()) {
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LOG_ERROR(Frontend, "Unable to create main openGL context");
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}
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}
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/// Create the shared contexts for rendering and presentation
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explicit OpenGLSharedContext(QOpenGLContext* share_context, QSurface* main_surface = nullptr) {
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// disable vsync for any shared contexts
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auto format = share_context->format();
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const int swap_interval =
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Settings::values.vsync_mode.GetValue() == Settings::VSyncMode::Immediate ? 0 : 1;
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format.setSwapInterval(main_surface ? swap_interval : 0);
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context = std::make_unique<QOpenGLContext>();
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context->setShareContext(share_context);
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context->setFormat(format);
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if (!context->create()) {
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LOG_ERROR(Frontend, "Unable to create shared openGL context");
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}
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if (!main_surface) {
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offscreen_surface = std::make_unique<QOffscreenSurface>(nullptr);
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offscreen_surface->setFormat(format);
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offscreen_surface->create();
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surface = offscreen_surface.get();
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} else {
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surface = main_surface;
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}
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}
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~OpenGLSharedContext() {
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DoneCurrent();
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}
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void SwapBuffers() override {
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context->swapBuffers(surface);
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}
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void MakeCurrent() override {
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// We can't track the current state of the underlying context in this wrapper class because
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// Qt may make the underlying context not current for one reason or another. In particular,
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// the WebBrowser uses GL, so it seems to conflict if we aren't careful.
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// Instead of always just making the context current (which does not have any caching to
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// check if the underlying context is already current) we can check for the current context
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// in the thread local data by calling `currentContext()` and checking if its ours.
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if (QOpenGLContext::currentContext() != context.get()) {
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context->makeCurrent(surface);
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}
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}
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void DoneCurrent() override {
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context->doneCurrent();
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}
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QOpenGLContext* GetShareContext() {
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return context.get();
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}
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const QOpenGLContext* GetShareContext() const {
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return context.get();
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}
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private:
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// Avoid using Qt parent system here since we might move the QObjects to new threads
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// As a note, this means we should avoid using slots/signals with the objects too
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std::unique_ptr<QOpenGLContext> context;
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std::unique_ptr<QOffscreenSurface> offscreen_surface{};
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QSurface* surface;
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};
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#endif
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class DummyContext : public Core::Frontend::GraphicsContext {};
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