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OpenGL modernization: draw the max hold spectrum line in the new way

This commit is contained in:
f4exb 2016-03-03 00:19:18 +01:00
parent 691a34cb16
commit 7d0fe882d7
1 changed files with 7 additions and 14 deletions
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21
sdrbase/gui/glspectrum.cpp
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@ -1122,6 +1122,7 @@ void GLSpectrum::paintGL()
m_maxHold[i] = (j * m_powerRange) / 99.0 + m_referenceLevel;
}
#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);
@ -1132,7 +1133,6 @@ void GLSpectrum::paintGL()
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glLineWidth(1.0f);
#ifdef GL_DEPRECATED
//glEnable(GL_LINE_SMOOTH);
glBegin(GL_LINE_STRIP);
for(int i = 0; i < m_fftSize; i++) {
@ -1144,9 +1144,12 @@ void GLSpectrum::paintGL()
glVertex2f(i, v);
}
glEnd();
//glDisable(GL_LINE_SMOOTH);
glPopMatrix();
#else
{
GLfloat q3[2*m_fftSize];
Real bottom = -m_powerRange;
for(int i = 0; i < m_fftSize; i++) {
Real v = m_maxHold[i] - m_referenceLevel;
@ -1157,21 +1160,11 @@ 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
QVector4D color(1.0f, 0.0f, 0.0f, (float) m_displayTraceIntensity / 100.0f);
m_glShaderSimplePolyline.draw(m_glHistogramMatrix, color, q3, m_fftSize);
}
#endif
//glDisable(GL_LINE_SMOOTH);
glPopMatrix();
}
// paint current spectrum line on top of histogram