mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-12-23 18:15:45 -05:00
OpenGL modernization: draw the spectrum line in the new way
This commit is contained in:
f4exb
parent
22d9e77974
commit
add5a382f3
@ -150,12 +150,13 @@ private:
|
||||
int m_histogramLateHoldoff;
|
||||
int m_histogramStroke;
|
||||
QRectF m_glHistogramRect;
|
||||
QRectF m_glHistogramRect2;
|
||||
bool m_displayHistogram;
|
||||
|
||||
bool m_displayChanged;
|
||||
|
||||
QOpenGLVertexArrayObject m_vao;
|
||||
QOpenGLBuffer m_vbo;
|
||||
//QOpenGLVertexArrayObject m_vao; don't know what to do with this shit
|
||||
//QOpenGLBuffer m_vbo;
|
||||
QOpenGLShaderProgram *m_program;
|
||||
int m_matrixLoc;
|
||||
int m_colorLoc;
|
||||
|
||||
@ -21,6 +21,7 @@
|
||||
|
||||
#include <QMouseEvent>
|
||||
#include <QOpenGLShaderProgram>
|
||||
#include <QOpenGLFunctions>
|
||||
#include "gui/glspectrum.h"
|
||||
#include "gui/glshadersources.h"
|
||||
|
||||
@ -113,12 +114,6 @@ GLSpectrum::GLSpectrum(QWidget* parent) :
|
||||
m_frequencyScale.setFont(font());
|
||||
m_frequencyScale.setOrientation(Qt::Horizontal);
|
||||
|
||||
m_vao.create();
|
||||
QOpenGLVertexArrayObject::Binder vaoBinder(&m_vao);
|
||||
m_vbo.create();
|
||||
m_vbo.bind();
|
||||
// TODO: allocate VBO
|
||||
|
||||
connect(&m_timer, SIGNAL(timeout()), this, SLOT(tick()));
|
||||
m_timer.start(50);
|
||||
}
|
||||
@ -163,10 +158,6 @@ GLSpectrum::~GLSpectrum()
|
||||
deleteTexture(m_frequencyTexture);
|
||||
m_frequencyTextureAllocated = false;
|
||||
}
|
||||
|
||||
makeCurrent(); // TODO: move to cleanup() wnem inheriting from QOpenGLWidget
|
||||
m_vbo.destroy();
|
||||
doneCurrent();
|
||||
}
|
||||
|
||||
void GLSpectrum::setCenterFrequency(quint64 frequency)
|
||||
@ -497,7 +488,24 @@ void GLSpectrum::updateHistogram(const std::vector<Real>& spectrum)
|
||||
|
||||
void GLSpectrum::initializeGL()
|
||||
{
|
||||
//connect(context(), &QOpenGLContext::aboutToBeDestroyed, this, &GLSpectrum::cleanup); // TODO: when migrating to QOpenGLWidget
|
||||
QOpenGLContext *glCurrentContext = QOpenGLContext::currentContext();
|
||||
|
||||
if (glCurrentContext) {
|
||||
if (QOpenGLContext::currentContext()->isValid()) {
|
||||
qDebug() << "GLSpectrum::initializeGL: context:"
|
||||
<< " major: " << (QOpenGLContext::currentContext()->format()).majorVersion()
|
||||
<< " minor: " << (QOpenGLContext::currentContext()->format()).minorVersion()
|
||||
<< " ES: " << (QOpenGLContext::currentContext()->isOpenGLES() ? "yes" : "no");
|
||||
}
|
||||
else {
|
||||
qDebug() << "GLSpectrum::initializeGL: current context is invalid";
|
||||
}
|
||||
} else {
|
||||
qCritical() << "GLSpectrum::initializeGL: no current context";
|
||||
return;
|
||||
}
|
||||
|
||||
connect(glCurrentContext, &QOpenGLContext::aboutToBeDestroyed, this, &GLSpectrum::cleanup); // TODO: when migrating to QOpenGLWidget
|
||||
glDisable(GL_DEPTH_TEST);
|
||||
|
||||
m_program = new QOpenGLShaderProgram;
|
||||
@ -507,7 +515,7 @@ void GLSpectrum::initializeGL()
|
||||
m_program->link();
|
||||
m_program->bind();
|
||||
m_matrixLoc = m_program->uniformLocation("uMatrix");
|
||||
m_colorLoc = m_program->uniformLocation("uColor");
|
||||
m_colorLoc = m_program->uniformLocation("uColour");
|
||||
m_program->release();
|
||||
}
|
||||
|
||||
@ -1177,29 +1185,17 @@ void GLSpectrum::paintGL()
|
||||
|
||||
// paint current spectrum line on top of histogram
|
||||
if ((m_displayCurrent) && m_currentSpectrum) {
|
||||
#ifdef GL_DEPRECATED
|
||||
glPushMatrix();
|
||||
glTranslatef(m_glHistogramRect.x(), m_glHistogramRect.y(), 0);
|
||||
glScalef(m_glHistogramRect.width() / (float)(m_fftSize - 1), -m_glHistogramRect.height() / m_powerRange, 1);
|
||||
|
||||
glEnable(GL_BLEND);
|
||||
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||
//glEnable(GL_LINE_SMOOTH);
|
||||
glLineWidth(1.0f);
|
||||
glColor4f(1.0f, 1.0f, 0.25f, m_displayTraceIntensity / 100.0); // intense yellow
|
||||
Real bottom = -m_powerRange;
|
||||
|
||||
#ifdef GL_DEPRECATED
|
||||
glBegin(GL_LINE_STRIP);
|
||||
for(int i = 0; i < m_fftSize; i++) {
|
||||
Real v = (*m_currentSpectrum)[i] - m_referenceLevel;
|
||||
if(v > 0)
|
||||
v = 0;
|
||||
else if(v < bottom)
|
||||
v = bottom;
|
||||
glVertex2f(i, v);
|
||||
}
|
||||
glEnd();
|
||||
#else
|
||||
{
|
||||
GLfloat q3[2*m_fftSize];
|
||||
|
||||
@ -1212,21 +1208,61 @@ void GLSpectrum::paintGL()
|
||||
q3[2*i] = (Real) i;
|
||||
q3[2*i+1] = v;
|
||||
}
|
||||
#ifdef GL_ANDROID
|
||||
glEnableVertexAttribArray(GL_VERTEX_ARRAY);
|
||||
glVertexAttribPointer(GL_VERTEX_ARRAY, 2, GL_FLOAT, GL_FALSE, 0, q3);
|
||||
glDrawArrays(GL_LINE_STRIP, 0, m_fftSize);
|
||||
glDisableVertexAttribArray(GL_VERTEX_ARRAY);
|
||||
#else
|
||||
|
||||
glEnableClientState(GL_VERTEX_ARRAY);
|
||||
glVertexPointer(2, GL_FLOAT, 0, q3);
|
||||
glDrawArrays(GL_LINE_STRIP, 0, m_fftSize);
|
||||
glDisableClientState(GL_VERTEX_ARRAY);
|
||||
#endif
|
||||
}
|
||||
/*
|
||||
glBegin(GL_LINE_STRIP);
|
||||
for(int i = 0; i < m_fftSize; i++) {
|
||||
Real v = (*m_currentSpectrum)[i] - m_referenceLevel;
|
||||
if(v > 0)
|
||||
v = 0;
|
||||
else if(v < bottom)
|
||||
v = bottom;
|
||||
glVertex2f(i, v);
|
||||
}
|
||||
glEnd();*/
|
||||
glPopMatrix();
|
||||
#else
|
||||
{
|
||||
Real bottom = -m_powerRange;
|
||||
GLfloat q3[2*m_fftSize];
|
||||
|
||||
for(int i = 0; i < m_fftSize; i++) {
|
||||
Real v = (*m_currentSpectrum)[i] - m_referenceLevel;
|
||||
if(v > 0)
|
||||
v = 0;
|
||||
else if(v < bottom)
|
||||
v = bottom;
|
||||
q3[2*i] = (Real) i;
|
||||
q3[2*i+1] = v;
|
||||
}
|
||||
|
||||
QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions();
|
||||
m_program->bind();
|
||||
QVector4D color(1.0f, 1.0f, 0.25f, (float) m_displayTraceIntensity / 100.0f);
|
||||
QMatrix4x4 tsMatrix;
|
||||
tsMatrix.setToIdentity();
|
||||
//qDebug("GLSpectrum::paintGL: %f %f %f %f", m_glHistogramRect.x(), m_glHistogramRect.y(), m_glHistogramRect.width(), m_glHistogramRect.height());
|
||||
//tsMatrix.translate(m_glHistogramRect.x(), m_glHistogramRect.y(), 0);
|
||||
tsMatrix.translate(m_glHistogramRect2.x(), m_glHistogramRect2.y(), 0);
|
||||
tsMatrix.scale((2.0f * m_glHistogramRect.width()) / (float)(m_fftSize - 1), (2.0f * m_glHistogramRect.height()) / m_powerRange, 1);
|
||||
m_program->setUniformValue(m_matrixLoc, tsMatrix);
|
||||
m_program->setUniformValue(m_colorLoc, color);
|
||||
f->glEnable(GL_BLEND);
|
||||
f->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||
f->glLineWidth(1.0f);
|
||||
f->glEnableVertexAttribArray(0); // vertex
|
||||
f->glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, q3);
|
||||
f->glDrawArrays(GL_LINE_STRIP, 0, m_fftSize);
|
||||
f->glDisableVertexAttribArray(0);
|
||||
m_program->release();
|
||||
//QOpenGLVertexArrayObject::Binder vaoBinder(&m_vao);
|
||||
}
|
||||
#endif
|
||||
//glDisable(GL_LINE_SMOOTH);
|
||||
glPopMatrix();
|
||||
}
|
||||
|
||||
// paint waterfall grid
|
||||
@ -1550,6 +1586,16 @@ void GLSpectrum::applyChanges()
|
||||
(float)histogramHeight / (float)height()
|
||||
);
|
||||
|
||||
float width2 = (float) width() / 2.0f;
|
||||
float height2 = (float) height() / 2.0f;
|
||||
|
||||
m_glHistogramRect2 = QRectF(
|
||||
-1.0f + ((float)leftMargin / width2),
|
||||
1.0f - ((float)histogramTop / height2),
|
||||
1.0f - ((float)(width2 - leftMargin - rightMargin) / width2),
|
||||
1.0f - ((float)histogramHeight / height2)
|
||||
);
|
||||
|
||||
m_frequencyScaleRect = QRect(
|
||||
0,
|
||||
frequencyScaleTop,
|
||||
@ -2073,6 +2119,5 @@ void GLSpectrum::cleanup()
|
||||
delete m_program;
|
||||
m_program = 0;
|
||||
}
|
||||
m_program = 0;
|
||||
doneCurrent();
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user