git.sesse.net Git - nageru/blob - glwidget.cpp

   1 #include <qmetatype.h>  // Needs to come before egl.h.
   2 #include <qdatastream.h>  // Needs to come before egl.h.
   3 #include <qtextstream.h>  // Needs to come before egl.h.
   4 #include <qcursor.h>  // Needs to come before egl.h.
   5 #include <qcoreevent.h>  // Needs to come before egl.h.
   6 #include <qevent.h>  // Needs to come before egl.h.
   7 #include <epoxy/gl.h>
   8 #include <epoxy/egl.h>
   9 #include <QSurfaceFormat>
  10
  11 #include "glwidget.h"
  12
  13 #include <stdio.h>
  14 #include <functional>
  15 #include <mutex>
  16
  17 #include "context.h"
  18 #include "effect_chain.h"
  19 #include "flags.h"
  20 #include "mainwindow.h"
  21 #include "mixer.h"
  22 #include "qnamespace.h"
  23 #include "ref_counted_gl_sync.h"
  24
  25 class QMouseEvent;
  26 class QWidget;
  27
  28 #undef Success
  29 #include <movit/util.h>
  30 #include <string>
  31
  32 using namespace std;
  33
  34 GLWidget::GLWidget(QWidget *parent)
  35     : QGLWidget(parent, global_share_widget)
  36 {
  37 }
  38
  39 GLWidget::~GLWidget()
  40 {
  41 }
  42
  43 void GLWidget::initializeGL()
  44 {
  45         static std::once_flag flag;
  46         std::call_once(flag, [this]{
  47                 global_mixer = new Mixer(QGLFormat::toSurfaceFormat(format()), global_flags.num_cards);
  48                 global_mainwindow->mixer_created(global_mixer);
  49                 global_mixer->start();
  50         });
  51         global_mixer->set_frame_ready_callback(output, [this]{
  52                 QMetaObject::invokeMethod(this, "update", Qt::AutoConnection);
  53                 emit transition_names_updated(global_mixer->get_transition_names());
  54         });
  55
  56         glDisable(GL_BLEND);
  57         glDisable(GL_DEPTH_TEST);
  58         glDepthMask(GL_FALSE);
  59 }
  60
  61 void GLWidget::resizeGL(int width, int height)
  62 {
  63         glViewport(0, 0, width, height);
  64 }
  65
  66 void GLWidget::paintGL()
  67 {
  68         Mixer::DisplayFrame frame;
  69         if (!global_mixer->get_display_frame(output, &frame)) {
  70                 glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
  71                 check_error();
  72                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  73                 check_error();
  74                 return;
  75         }
  76
  77         check_error();
  78         glWaitSync(frame.ready_fence.get(), /*flags=*/0, GL_TIMEOUT_IGNORED);
  79         check_error();
  80         frame.setup_chain();
  81         check_error();
  82         frame.chain->render_to_screen();
  83         check_error();
  84 }
  85
  86 void GLWidget::mousePressEvent(QMouseEvent *event)
  87 {
  88         emit clicked();
  89 }