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FlightGear and OpenGL Core Profile: Difference between revisions
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→Approach
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For starters, we can try the [[FlightGear Headless]] option to build a fgfs version without any graphics at all. | For starters, we can try the [[FlightGear Headless]] option to build a fgfs version without any graphics at all. | ||
The next step will be identifying and excluding problematic sources (those containing legacy/raw OpenGL code, e.g. using <code>glBegin()</code> or <code>glEnable()</code> respectively) by adding <code>#ifdef</code> macros to the sources in question, and updating CMakeLists.txt accordingly, | The next step will be identifying and excluding problematic sources (those containing legacy/raw OpenGL code, e.g. using <code>glBegin()</code> or <code>glEnable()</code> respectively): | ||
https://sourceforge.net/p/flightgear/flightgear/ci/next/tree/src/Cockpit/render_area_2d.cxx | |||
<syntaxhighlight lang="cpp"> | |||
void RenderArea2D::RenderQuad( const SGVec2f *p) { | |||
glBegin(GL_QUADS); | |||
glNormal3f(0.0f, 0.0f, 0.0f); | |||
glVertex2fv( p[0].data() ); | |||
glVertex2fv( p[1].data() ); | |||
glVertex2fv( p[2].data() ); | |||
glVertex2fv( p[3].data() ); | |||
glEnd(); | |||
} | |||
</syntaxhighlight> | |||
And then by adding <code>#ifdef</code> macros to the sources in question, and updating CMakeLists.txt accordingly: https://sourceforge.net/p/flightgear/flightgear/ci/next/tree/src/Cockpit/panel_io.cxx#l751 | |||
Ideally, in conjunction with a feature-specific build option to disable the corresponding feature (think [[PUI]] or the [[HUD]]). | |||
Initially, this will probably include: | Initially, this will probably include: | ||