public static GlContextInfo Create(GlVersion version, Func <string, IntPtr> getProcAddress)
{
var basicInfoInterface = new GlBasicInfoInterface(getProcAddress);
var exts = basicInfoInterface.GetExtensions();
return(new GlContextInfo(version, new HashSet <string>(exts)));
}
public static GlInterface FromNativeUtf8GetProcAddress(GlVersion version, Func <IntPtr, IntPtr> getProcAddress)
{
return(new GlInterface(version, s =>
{
var ptr = Marshal.StringToHGlobalAnsi(s);
var rv = getProcAddress(ptr);
Marshal.FreeHGlobal(ptr);
return rv;
}));
}
public EglContext(EglDisplay display, EglInterface egl, IntPtr ctx, EglSurface offscreenSurface,
GlVersion version, int sampleCount, int stencilSize)
{
_disp = display;
_egl = egl;
Context = ctx;
OffscreenSurface = offscreenSurface;
Version = version;
SampleCount = sampleCount;
StencilSize = stencilSize;
using (MakeCurrent())
GlInterface = GlInterface.FromNativeUtf8GetProcAddress(version, b => _egl.GetProcAddress(b));
}
public static GlInterface FromNativeUtf8GetProcAddress(GlVersion version, Func <Utf8Buffer, IntPtr> getProcAddress) => new GlInterface(version, getProcAddress);
public GlInterface(GlVersion version, Func <Utf8Buffer, IntPtr> n) : this(version, ConvertNative(n))
{
}
public GlInterface(GlVersion version, Func <string, IntPtr> getProcAddress) : this(
GlContextInfo.Create(version, getProcAddress), getProcAddress)
{
}
public GlContextInfo(GlVersion version, HashSet <string> extensions)
{
Version = version;
Extensions = extensions;
}
public EglDisplay(EglInterface egl, int platformType, IntPtr platformDisplay, int[] attrs)
{
_egl = egl;
if (platformType == -1 && platformDisplay == IntPtr.Zero)
{
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
if (_egl.GetPlatformDisplayEXT == null)
{
throw new OpenGlException("eglGetPlatformDisplayEXT is not supported by libegl.dll");
}
var allowedApis = AvaloniaLocator.Current.GetService <AngleOptions>()?.AllowedPlatformApis
?? new List <AngleOptions.PlatformApi> {
AngleOptions.PlatformApi.DirectX9
};
foreach (var platformApi in allowedApis)
{
int dapi;
if (platformApi == AngleOptions.PlatformApi.DirectX9)
{
dapi = EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE;
}
else if (platformApi == AngleOptions.PlatformApi.DirectX11)
{
dapi = EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE;
}
else
{
continue;
}
_display = _egl.GetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, IntPtr.Zero,
new[] { EGL_PLATFORM_ANGLE_TYPE_ANGLE, dapi, EGL_NONE });
if (_display != IntPtr.Zero)
{
_angleApi = platformApi;
break;
}
}
if (_display == IntPtr.Zero)
{
throw new OpenGlException("Unable to create ANGLE display");
}
}
if (_display == IntPtr.Zero)
{
_display = _egl.GetDisplay(IntPtr.Zero);
}
}
else
{
if (_egl.GetPlatformDisplayEXT == null)
{
throw new OpenGlException("eglGetPlatformDisplayEXT is not supported by libegl");
}
_display = _egl.GetPlatformDisplayEXT(platformType, platformDisplay, attrs);
}
if (_display == IntPtr.Zero)
{
throw OpenGlException.GetFormattedException("eglGetDisplay", _egl);
}
if (!_egl.Initialize(_display, out var major, out var minor))
{
throw OpenGlException.GetFormattedException("eglInitialize", _egl);
}
foreach (var cfg in new[]
{
new
{
Attributes = new[]
{
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
},
Api = EGL_OPENGL_ES_API,
RenderableTypeBit = EGL_OPENGL_ES2_BIT,
Version = new GlVersion(GlProfileType.OpenGLES, 2, 0)
}
})
{
if (!_egl.BindApi(cfg.Api))
{
continue;
}
foreach (var surfaceType in new[] { EGL_PBUFFER_BIT | EGL_WINDOW_BIT, EGL_WINDOW_BIT })
{
foreach (var stencilSize in new[] { 8, 1, 0 })
{
foreach (var depthSize in new [] { 8, 1, 0 })
{
var attribs = new[]
{
EGL_SURFACE_TYPE, surfaceType,
EGL_RENDERABLE_TYPE, cfg.RenderableTypeBit,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_STENCIL_SIZE, stencilSize,
EGL_DEPTH_SIZE, depthSize,
EGL_NONE
};
if (!_egl.ChooseConfig(_display, attribs, out _config, 1, out int numConfigs))
{
continue;
}
if (numConfigs == 0)
{
continue;
}
_contextAttributes = cfg.Attributes;
_surfaceType = surfaceType;
_version = cfg.Version;
_egl.GetConfigAttrib(_display, _config, EGL_SAMPLES, out _sampleCount);
_egl.GetConfigAttrib(_display, _config, EGL_STENCIL_SIZE, out _stencilSize);
goto Found;
}
}
}
}
Found:
if (_contextAttributes == null)
{
throw new OpenGlException("No suitable EGL config was found");
}
}
bool EnsureInitialized()
{
if (_context != null)
{
return(true);
}
if (_glFailed)
{
return(false);
}
var feature = AvaloniaLocator.Current.GetService <IWindowingPlatformGlFeature>();
if (feature == null)
{
return(false);
}
try
{
_context = feature.CreateContext();
}
catch (Exception e)
{
Logger.TryGet(LogEventLevel.Error)?.Log("OpenGL", "OpenGlControlBase",
"Unable to initialize OpenGL: unable to create additional OpenGL context: {exception}", e);
_glFailed = true;
return(false);
}
GlVersion = _context.Version;
try
{
_bitmap = new OpenGlTextureBitmap();
}
catch (Exception e)
{
_context.Dispose();
_context = null;
Logger.TryGet(LogEventLevel.Error)?.Log("OpenGL", "OpenGlControlBase",
"Unable to initialize OpenGL: unable to create OpenGlTextureBitmap: {exception}", e);
_glFailed = true;
return(false);
}
using (_context.MakeCurrent())
{
try
{
_oldSize = GetPixelSize();
var gl = _context.GlInterface;
var oneArr = new int[1];
gl.GenFramebuffers(1, oneArr);
_fb = oneArr[0];
gl.BindFramebuffer(GL_FRAMEBUFFER, _fb);
gl.GenTextures(1, oneArr);
_texture = oneArr[0];
ResizeTexture(gl);
gl.FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, _texture, 0);
var status = gl.CheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE)
{
int code;
while ((code = gl.GetError()) != 0)
{
Logger.TryGet(LogEventLevel.Error)?.Log("OpenGL", "OpenGlControlBase",
"Unable to initialize OpenGL FBO: {code}", code);
}
_glFailed = true;
return(false);
}
}
catch (Exception e)
{
Logger.TryGet(LogEventLevel.Error)?.Log("OpenGL", "OpenGlControlBase",
"Unable to initialize OpenGL FBO: {exception}", e);
_glFailed = true;
}
if (!_glFailed)
{
OnOpenGlInit(_context.GlInterface, _fb);
}
}
if (_glFailed)
{
DoCleanup(false);
}
return(true);
}
public EglDisplay(EglInterface egl, IntPtr display)
{
_egl = egl;
_display = display;
if (_display == IntPtr.Zero)
{
throw new ArgumentException();
}
if (!_egl.Initialize(_display, out var major, out var minor))
{
throw OpenGlException.GetFormattedException("eglInitialize", _egl);
}
var glProfiles = AvaloniaLocator.Current.GetService <AngleOptions>()?.GlProfiles
?? new[]
{
new GlVersion(GlProfileType.OpenGLES, 3, 0),
new GlVersion(GlProfileType.OpenGLES, 2, 0)
};
var cfgs = glProfiles.Select(x =>
{
var typeBit = EGL_OPENGL_ES3_BIT;
switch (x.Major)
{
case 2:
typeBit = EGL_OPENGL_ES2_BIT;
break;
case 1:
typeBit = EGL_OPENGL_ES_BIT;
break;
}
return(new
{
Attributes = new[]
{
EGL_CONTEXT_MAJOR_VERSION, x.Major,
EGL_CONTEXT_MINOR_VERSION, x.Minor,
EGL_NONE
},
Api = EGL_OPENGL_ES_API,
RenderableTypeBit = typeBit,
Version = x
});
});
foreach (var cfg in cfgs)
{
if (!_egl.BindApi(cfg.Api))
{
continue;
}
foreach (var surfaceType in new[] { EGL_PBUFFER_BIT | EGL_WINDOW_BIT, EGL_WINDOW_BIT })
{
foreach (var stencilSize in new[] { 8, 1, 0 })
{
foreach (var depthSize in new [] { 8, 1, 0 })
{
var attribs = new[]
{
EGL_SURFACE_TYPE, surfaceType,
EGL_RENDERABLE_TYPE, cfg.RenderableTypeBit,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_STENCIL_SIZE, stencilSize,
EGL_DEPTH_SIZE, depthSize,
EGL_NONE
};
if (!_egl.ChooseConfig(_display, attribs, out _config, 1, out int numConfigs))
{
continue;
}
if (numConfigs == 0)
{
continue;
}
_contextAttributes = cfg.Attributes;
_surfaceType = surfaceType;
_version = cfg.Version;
_egl.GetConfigAttrib(_display, _config, EGL_SAMPLES, out _sampleCount);
_egl.GetConfigAttrib(_display, _config, EGL_STENCIL_SIZE, out _stencilSize);
goto Found;
}
}
}
}
Found:
if (_contextAttributes == null)
{
throw new OpenGlException("No suitable EGL config was found");
}
}
public EglDisplay(EglInterface egl, IntPtr display)
{
_egl = egl;
_display = display;
if (_display == IntPtr.Zero)
{
throw new ArgumentException();
}
if (!_egl.Initialize(_display, out var major, out var minor))
{
throw OpenGlException.GetFormattedException("eglInitialize", _egl);
}
foreach (var cfg in new[]
{
new
{
Attributes = new[]
{
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
},
Api = EGL_OPENGL_ES_API,
RenderableTypeBit = EGL_OPENGL_ES2_BIT,
Version = new GlVersion(GlProfileType.OpenGLES, 2, 0)
}
})
{
if (!_egl.BindApi(cfg.Api))
{
continue;
}
foreach (var surfaceType in new[] { EGL_PBUFFER_BIT | EGL_WINDOW_BIT, EGL_WINDOW_BIT })
{
foreach (var stencilSize in new[] { 8, 1, 0 })
{
foreach (var depthSize in new [] { 8, 1, 0 })
{
var attribs = new[]
{
EGL_SURFACE_TYPE, surfaceType,
EGL_RENDERABLE_TYPE, cfg.RenderableTypeBit,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_STENCIL_SIZE, stencilSize,
EGL_DEPTH_SIZE, depthSize,
EGL_NONE
};
if (!_egl.ChooseConfig(_display, attribs, out _config, 1, out int numConfigs))
{
continue;
}
if (numConfigs == 0)
{
continue;
}
_contextAttributes = cfg.Attributes;
_surfaceType = surfaceType;
_version = cfg.Version;
_egl.GetConfigAttrib(_display, _config, EGL_SAMPLES, out _sampleCount);
_egl.GetConfigAttrib(_display, _config, EGL_STENCIL_SIZE, out _stencilSize);
goto Found;
}
}
}
}
Found:
if (_contextAttributes == null)
{
throw new OpenGlException("No suitable EGL config was found");
}
}
