void QSGStyledTextMaterialData::deactivate()
{
QSGMaterialShader::deactivate();
#if !defined(QT_OPENGL_ES_2) && defined(GL_ARB_framebuffer_sRGB)
if (qAbs(fontSmoothingGamma() - 2.2) < 0.25)
glDisable(GL_FRAMEBUFFER_SRGB);
#endif
}
void QSGTextMaskMaterialData::deactivate()
{
QSGMaterialShader::deactivate();
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
#if !defined(QT_OPENGL_ES_2) && defined(GL_ARB_framebuffer_sRGB)
if (qAbs(fontSmoothingGamma() - 2.2) < 0.25)
glDisable(GL_FRAMEBUFFER_SRGB);
#endif
}
void QSG24BitTextMaskShader::initialize()
{
QSGTextMaskShader::initialize();
// 0.25 was found to be acceptable error margin by experimentation. On Mac, the gamma is 2.0,
// but using sRGB looks okay.
if (QOpenGLContext::currentContext()->hasExtension(QByteArrayLiteral("GL_ARB_framebuffer_sRGB"))
&& m_glyphFormat == QFontEngine::Format_A32
&& qAbs(fontSmoothingGamma() - 2.2) < 0.25) {
m_useSRGB = true;
}
}
void QSGStyledTextMaterialData::activate()
{
QSGMaterialShader::activate();
#if !defined(QT_OPENGL_ES_2) && defined(GL_ARB_framebuffer_sRGB)
// 0.25 was found to be acceptable error margin by experimentation. On Mac, the gamma is 2.0,
// but using sRGB looks okay.
if (qAbs(fontSmoothingGamma() - 2.2) < 0.25)
glEnable(GL_FRAMEBUFFER_SRGB);
#endif
}
