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#if defined(BUILD_GL) || defined(BUILD_GLES)
 10
 11#include "Display.h"
 12
 13#ifdef USE_EPOXY
 14#include <epoxy/gl.h>
 15#ifndef GLdouble
 16#define GLdouble GLdouble
 17#endif
 18#endif
 19
 20#include <QElapsedTimer>
 21#include <QGLWidget>
 22#include <QList>
 23#include <QMouseEvent>
 24#include <QQueue>
 25#include <QThread>
 26
 27#include "platform/video-backend.h"
 28
 29namespace QGBA {
 30
 31class EmptyGLWidget : public QGLWidget {
 32public:
 33	EmptyGLWidget(const QGLFormat& format, QWidget* parent) : QGLWidget(format, parent) { setAutoBufferSwap(false); }
 34
 35protected:
 36	void paintEvent(QPaintEvent*) override {}
 37	void resizeEvent(QResizeEvent*) override {}
 38	void mouseMoveEvent(QMouseEvent* event) override { event->ignore(); }
 39};
 40
 41class PainterGL;
 42class DisplayGL : public Display {
 43Q_OBJECT
 44
 45public:
 46	DisplayGL(const QGLFormat& format, QWidget* parent = nullptr);
 47	~DisplayGL();
 48
 49	bool isDrawing() const override { return m_isDrawing; }
 50	bool supportsShaders() const override;
 51	VideoShader* shaders() override;
 52
 53public slots:
 54	void startDrawing(mCoreThread* context) override;
 55	void stopDrawing() override;
 56	void pauseDrawing() override;
 57	void unpauseDrawing() override;
 58	void forceDraw() override;
 59	void lockAspectRatio(bool lock) override;
 60	void lockIntegerScaling(bool lock) override;
 61	void filter(bool filter) override;
 62	void framePosted(const uint32_t*) override;
 63	void setShaders(struct VDir*) override;
 64	void clearShaders() override;
 65
 66protected:
 67	virtual void paintEvent(QPaintEvent*) override {}
 68	virtual void resizeEvent(QResizeEvent*) override;
 69
 70private:
 71	void resizePainter();
 72
 73	bool m_isDrawing = false;
 74	QGLWidget* m_gl;
 75	PainterGL* m_painter;
 76	QThread* m_drawThread = nullptr;
 77	mCoreThread* m_context = nullptr;
 78};
 79
 80class PainterGL : public QObject {
 81Q_OBJECT
 82
 83public:
 84	PainterGL(int majorVersion, QGLWidget* parent);
 85	~PainterGL();
 86
 87	void setContext(mCoreThread*);
 88	void setMessagePainter(MessagePainter*);
 89	void enqueue(const uint32_t* backing);
 90
 91	bool supportsShaders() const { return m_supportsShaders; }
 92
 93public slots:
 94	void forceDraw();
 95	void draw();
 96	void start();
 97	void stop();
 98	void pause();
 99	void unpause();
100	void resize(const QSize& size);
101	void lockAspectRatio(bool lock);
102	void lockIntegerScaling(bool lock);
103	void filter(bool filter);
104
105	void setShaders(struct VDir*);
106	void clearShaders();
107	VideoShader* shaders();
108
109private:
110	void performDraw();
111	void dequeue();
112	void dequeueAll();
113
114	QList<uint32_t*> m_free;
115	QQueue<uint32_t*> m_queue;
116	QPainter m_painter;
117	QMutex m_mutex;
118	QGLWidget* m_gl;
119	bool m_active;
120	bool m_started;
121	mCoreThread* m_context;
122	bool m_supportsShaders;
123	VideoShader m_shader;
124	VideoBackend* m_backend;
125	QSize m_size;
126	MessagePainter* m_messagePainter;
127	QElapsedTimer m_delayTimer;
128};
129
130}
131
132#endif
133
134#endif