Thomas Wilshaw
1e81969fca
- Due to a floating point division error not all the bars on the waveform were being drawn. - Fix ratio in the fragment shader
130 lines
4.1 KiB
C++
130 lines
4.1 KiB
C++
|
|
/***
|
|
|
|
Olive - Non-Linear Video Editor
|
|
Copyright (C) 2019 Olive Team
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
***/
|
|
|
|
#include "waveform.h"
|
|
|
|
#include <QPainter>
|
|
#include <QtMath>
|
|
#include <QDebug>
|
|
|
|
#include "common/qtutils.h"
|
|
#include "node/node.h"
|
|
#include "render/backend/opengl/openglrenderfunctions.h"
|
|
|
|
OLIVE_NAMESPACE_ENTER
|
|
|
|
WaveformScope::WaveformScope(QWidget* parent) :
|
|
ScopeBase(parent)
|
|
{
|
|
}
|
|
|
|
OpenGLShaderPtr WaveformScope::CreateShader()
|
|
{
|
|
OpenGLShaderPtr pipeline = OpenGLShader::Create();
|
|
|
|
pipeline->create();
|
|
pipeline->addShaderFromSourceCode(QOpenGLShader::Vertex, OpenGLShader::CodeDefaultVertex());
|
|
pipeline->addShaderFromSourceCode(QOpenGLShader::Fragment, Node::ReadFileAsString(":/shaders/rgbwaveform.frag"));
|
|
pipeline->link();
|
|
|
|
return pipeline;
|
|
}
|
|
|
|
void WaveformScope::DrawScope()
|
|
{
|
|
float waveform_scale = 0.80f;
|
|
float waveform_dim_x = width() * waveform_scale;
|
|
float waveform_dim_y = height() * waveform_scale;
|
|
float waveform_start_dim_x = (width() - waveform_dim_x) / 2.0f;
|
|
float waveform_start_dim_y = (height() - waveform_dim_y) / 2.0f;
|
|
float waveform_end_dim_x = width() - waveform_start_dim_x;
|
|
float waveform_end_dim_y = height() - waveform_start_dim_y;
|
|
|
|
// Draw waveform through shader
|
|
pipeline()->bind();
|
|
pipeline()->setUniformValue("ove_resolution", managed_tex().width(), managed_tex().height());
|
|
pipeline()->setUniformValue("ove_viewport", width(), height());
|
|
GLfloat luma[3] = {0.0, 0.0, 0.0};
|
|
color_manager()->GetDefaultLumaCoefs(luma);
|
|
pipeline()->setUniformValue("luma_coeffs", luma[0], luma[1], luma[2]);
|
|
|
|
// Scale of the waveform relative to the viewport surface.
|
|
pipeline()->setUniformValue("waveform_scale", waveform_scale);
|
|
pipeline()->setUniformValue(
|
|
"waveform_dims", waveform_dim_x, waveform_dim_y);
|
|
|
|
pipeline()->setUniformValue(
|
|
"waveform_region",
|
|
waveform_start_dim_x, waveform_start_dim_y,
|
|
waveform_end_dim_x, waveform_end_dim_y);
|
|
|
|
float waveform_start_uv_x = waveform_start_dim_x / width();
|
|
float waveform_start_uv_y = waveform_start_dim_y / height();
|
|
float waveform_end_uv_x = waveform_end_dim_x / width();
|
|
float waveform_end_uv_y = waveform_end_dim_y / height();
|
|
pipeline()->setUniformValue(
|
|
"waveform_uv",
|
|
waveform_start_uv_x, waveform_start_uv_y,
|
|
waveform_end_uv_x, waveform_end_uv_y);
|
|
|
|
pipeline()->release();
|
|
|
|
managed_tex().Bind();
|
|
|
|
OpenGLRenderFunctions::Blit(pipeline());
|
|
|
|
managed_tex().Release();
|
|
|
|
// Draw line overlays
|
|
QPainter p(this);
|
|
QFontMetrics font_metrics = QFontMetrics(QFont());
|
|
QString label;
|
|
float ire_increment = 0.1f;
|
|
// Cast required to avoid floating point errors
|
|
int ire_steps = static_cast<int>(std::round(1.0 / ire_increment));
|
|
QVector<QLine> ire_lines(ire_steps + 1);
|
|
int font_x_offset = 0;
|
|
int font_y_offset = font_metrics.capHeight() / 2.0f;
|
|
|
|
p.setCompositionMode(QPainter::CompositionMode_Plus);
|
|
|
|
p.setPen(QColor(0.0, 0.6 * 255.0, 0.0));
|
|
p.setFont(QFont());
|
|
|
|
for (int i=0; i <= ire_steps; i++) {
|
|
ire_lines[i].setLine(
|
|
waveform_start_dim_x,
|
|
(waveform_dim_y * (i * ire_increment)) + waveform_start_dim_y,
|
|
waveform_end_dim_x,
|
|
(waveform_dim_y * (i * ire_increment)) + waveform_start_dim_y);
|
|
label = QString::number(1.0 - (i * ire_increment), 'f', 1);
|
|
font_x_offset = QFontMetricsWidth(font_metrics, label) + 4;
|
|
|
|
p.drawText(
|
|
waveform_start_dim_x - font_x_offset,
|
|
(waveform_dim_y * (i * ire_increment)) + waveform_start_dim_y + font_y_offset,
|
|
label);
|
|
}
|
|
p.drawLines(ire_lines);
|
|
}
|
|
|
|
OLIVE_NAMESPACE_EXIT
|