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#include "rendercoord.hpp"
#include <qobject.h>
#include <iostream>
#include <qrgb.h>
#include <render.hpp>
#include <sstream>
uint32_t colorToUint32(const Color &c) {
Color cnew = Color(c);
cnew.clamp();
return (0xFF << 24) +
(cnew.r() << 16) +
(cnew.g() << 8) +
cnew.b();
}
// Run by main thread
RenderThread::RenderThread(Renderer r, QObject *parent, unsigned id)
: QThread(parent),
m_lock(1),
m_render(r)
{
m_id = id;
}
// Run on new thread
void RenderThread::run() {
while (1) {
// Wait for work
m_work.acquire();
// Very expensive, but necesary to get live rendering
Color *sum = new Color[m_render.m_width * m_render.m_height];
m_current_samples = 0;
for (unsigned sample = 1; sample < m_samples+1; sample++) {
for (unsigned x = 0; x < m_render.m_width; x++) {
for (unsigned y = 0; y < m_render.m_height; y++) {
auto index = x + y * m_render.m_height;
sum[index] += m_render.render(m_render.m_width - x, m_render.m_height - y, 1);
m_writebuffer[index] = colorToUint32(sum[index] / sample);
}
}
m_current_samples = sample;
}
// Signal done
m_lock.release();
emit done(m_id);
}
}
int RenderThread::render(QRgb *buffer, unsigned samples) {
// Check if already running
if (!m_lock.tryAcquire()) {
return 1;
}
m_writebuffer = buffer;
m_samples = samples;
m_work.release();
return 0;
}
// Running on main thread
unsigned RenderThread::current_samples() {
// No sync should not be a problem here.
return m_current_samples;
}
RenderCoordinator::RenderCoordinator(QObject *parent, DrawWidget &target, Renderer r, QLabel *status)
: QObject(parent),
m_target(target),
m_renderer(r),
m_worker(m_renderer, this),
m_timer(this)
{
m_status = status;
m_worker.start();
QObject::connect(&m_worker, &RenderThread::done,
this, &RenderCoordinator::workerDone);
m_worker.render(target.m_drawbuffer, 100);
m_state = running;
updateUi();
QObject::connect(&m_timer, &QTimer::timeout, this, &RenderCoordinator::updateUi);
m_timer.start(500);
}
void RenderCoordinator::workerDone(unsigned workerid) {
m_state = stopped;
m_timer.stop();
updateUi();
}
void RenderCoordinator::updateUi() {
m_target.repaint();
if (!m_status) {
return;
}
std::ostringstream status;
status << states[m_state] << " " << m_worker.current_samples() << " samples";
m_status->setText(QString::fromStdString(status.str()));
}
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