1/* Copyright (c) 2013-2015 Jeffrey Pfau
  2 *
  3 * This Source Code Form is subject to the terms of the Mozilla Public
  4 * License, v. 2.0. If a copy of the MPL was not distributed with this
  5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  6#ifndef QGBA_DISPLAY_GL
  7#define QGBA_DISPLAY_GL
  8
  9#include "Display.h"
 10
 11#ifdef USE_EPOXY
 12#include <epoxy/gl.h>
 13#ifndef GLdouble
 14#define GLdouble GLdouble
 15#endif
 16#endif
 17
 18#include <QElapsedTimer>
 19#include <QGLWidget>
 20#include <QList>
 21#include <QMouseEvent>
 22#include <QQueue>
 23#include <QThread>
 24
 25#include "platform/video-backend.h"
 26
 27namespace QGBA {
 28
 29class EmptyGLWidget : public QGLWidget {
 30public:
 31	EmptyGLWidget(const QGLFormat& format, QWidget* parent) : QGLWidget(format, parent) { setAutoBufferSwap(false); }
 32
 33protected:
 34	void paintEvent(QPaintEvent*) override {}
 35	void resizeEvent(QResizeEvent*) override {}
 36	void mouseMoveEvent(QMouseEvent* event) override { event->ignore(); }
 37};
 38
 39class PainterGL;
 40class DisplayGL : public Display {
 41Q_OBJECT
 42
 43public:
 44	DisplayGL(const QGLFormat& format, QWidget* parent = nullptr);
 45	~DisplayGL();
 46
 47	bool isDrawing() const override { return m_isDrawing; }
 48	bool supportsShaders() const override;
 49	VideoShader* shaders() override;
 50
 51public slots:
 52	void startDrawing(mCoreThread* context) override;
 53	void stopDrawing() override;
 54	void pauseDrawing() override;
 55	void unpauseDrawing() override;
 56	void forceDraw() override;
 57	void lockAspectRatio(bool lock) override;
 58	void lockIntegerScaling(bool lock) override;
 59	void filter(bool filter) override;
 60	void framePosted(const uint32_t*) override;
 61	void setShaders(struct VDir*) override;
 62	void clearShaders() override;
 63
 64protected:
 65	virtual void paintEvent(QPaintEvent*) override {}
 66	virtual void resizeEvent(QResizeEvent*) override;
 67
 68private:
 69	void resizePainter();
 70
 71	bool m_isDrawing;
 72	QGLWidget* m_gl;
 73	PainterGL* m_painter;
 74	QThread* m_drawThread;
 75	mCoreThread* m_context;
 76};
 77
 78class PainterGL : public QObject {
 79Q_OBJECT
 80
 81public:
 82	PainterGL(int majorVersion, QGLWidget* parent);
 83	~PainterGL();
 84
 85	void setContext(mCoreThread*);
 86	void setMessagePainter(MessagePainter*);
 87	void enqueue(const uint32_t* backing);
 88
 89	bool supportsShaders() const { return m_supportsShaders; }
 90
 91public slots:
 92	void forceDraw();
 93	void draw();
 94	void start();
 95	void stop();
 96	void pause();
 97	void unpause();
 98	void resize(const QSize& size);
 99	void lockAspectRatio(bool lock);
100	void lockIntegerScaling(bool lock);
101	void filter(bool filter);
102
103	void setShaders(struct VDir*);
104	void clearShaders();
105	VideoShader* shaders();
106
107private:
108	void performDraw();
109	void dequeue();
110	void dequeueAll();
111
112	QList<uint32_t*> m_free;
113	QQueue<uint32_t*> m_queue;
114	QPainter m_painter;
115	QMutex m_mutex;
116	QGLWidget* m_gl;
117	bool m_active;
118	bool m_started;
119	mCoreThread* m_context;
120	bool m_supportsShaders;
121	VideoShader m_shader;
122	VideoBackend* m_backend;
123	QSize m_size;
124	MessagePainter* m_messagePainter;
125	QElapsedTimer m_delayTimer;
126};
127
128}
129
130#endif