public GlPlatformFeature(IAvnGlDisplay display)
{
_display = display;
var immediate = display.CreateContext(null);
var deferred = display.CreateContext(immediate);
int major, minor;
GlInterface glInterface;
using (immediate.MakeCurrent())
{
var basic = new GlBasicInfoInterface(display.GetProcAddress);
basic.GetIntegerv(GlConsts.GL_MAJOR_VERSION, out major);
basic.GetIntegerv(GlConsts.GL_MINOR_VERSION, out minor);
_version = new GlVersion(GlProfileType.OpenGL, major, minor);
glInterface = new GlInterface(_version, (name) =>
{
var rv = _display.GetProcAddress(name);
return(rv);
});
}
GlDisplay = new GlDisplay(display, glInterface, immediate.SampleCount, immediate.StencilSize);
ImmediateContext = new GlContext(GlDisplay, immediate, _version);
DeferredContext = new GlContext(GlDisplay, deferred, _version);
}
public GlDisplay(IAvnGlDisplay display)
{
_display = display;
GlInterface = new GlInterface((name, optional) =>
{
var rv = _display.GetProcAddress(name);
if (rv == IntPtr.Zero && !optional)
{
throw new OpenGlException($"{name} not found in system OpenGL");
}
return(rv);
});
}
public GlDisplay(IAvnGlDisplay display, int sampleCount, int stencilSize)
{
_display = display;
SampleCount = sampleCount;
StencilSize = stencilSize;
GlInterface = new GlInterface((name, optional) =>
{
var rv = _display.GetProcAddress(name);
if (rv == IntPtr.Zero && !optional)
{
throw new OpenGlException($"{name} not found in system OpenGL");
}
return(rv);
});
}