void ResizeTexture(GlInterface gl)
{
var size = GetPixelSize();
gl.GetIntegerv(GL_TEXTURE_BINDING_2D, out var oldTexture);
gl.BindTexture(GL_TEXTURE_2D, _texture);
gl.TexImage2D(GL_TEXTURE_2D, 0,
GlVersion.Type == GlProfileType.OpenGLES ? GL_RGBA : GL_RGBA8,
size.Width, size.Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, IntPtr.Zero);
gl.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
gl.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
gl.BindTexture(GL_TEXTURE_2D, oldTexture);
gl.GetIntegerv(GL_RENDERBUFFER_BINDING, out var oldRenderBuffer);
gl.DeleteRenderbuffers(1, new[] { _renderBuffer });
var oneArr = new int[1];
gl.GenRenderbuffers(1, oneArr);
_renderBuffer = oneArr[0];
gl.BindRenderbuffer(GL_RENDERBUFFER, _renderBuffer);
gl.RenderbufferStorage(GL_RENDERBUFFER,
GlVersion.Type == GlProfileType.OpenGLES ? GL_DEPTH_COMPONENT16 : GL_DEPTH_COMPONENT,
size.Width, size.Height);
gl.FramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, _renderBuffer);
gl.BindRenderbuffer(GL_RENDERBUFFER, oldRenderBuffer);
using (_bitmap.Lock())
_bitmap.SetTexture(_texture, GL_RGBA8, size, 1);
}
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 OpenGlException GetFormattedException(string funcName, GlInterface gl)
{
return(GetFormattedException(typeof(GlErrors), funcName, gl.GetError()));
}
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_NONE },
Api = EGL_OPENGL_API,
RenderableTypeBit = EGL_OPENGL_BIT,
Type = GlDisplayType.OpenGL2
},
new
{
Attributes = new[]
{
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
},
Api = EGL_OPENGL_ES_API,
RenderableTypeBit = EGL_OPENGL_ES2_BIT,
Type = GlDisplayType.OpenGLES2
}
})
{
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;
Type = cfg.Type;
}
}
}
}
if (_contextAttributes == null)
{
throw new OpenGlException("No suitable EGL config was found");
}
GlInterface = GlInterface.FromNativeUtf8GetProcAddress(b => _egl.GetProcAddress(b));
}
protected abstract void OnOpenGlRender(GlInterface gl, int fb);
protected virtual void OnOpenGlDeinit(GlInterface gl, int fb)
{
}
public EglDisplay(EglInterface egl)
{
_egl = egl;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows) && _egl.GetPlatformDisplayEXT != null)
{
foreach (var dapi in new[] { EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE, EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE })
{
_display = _egl.GetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, IntPtr.Zero, new[]
{
EGL_PLATFORM_ANGLE_TYPE_ANGLE, dapi, EGL_NONE
});
if (_display != IntPtr.Zero)
{
break;
}
}
}
if (_display == IntPtr.Zero)
{
_display = _egl.GetDisplay(IntPtr.Zero);
}
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_NONE },
Api = EGL_OPENGL_API,
RenderableTypeBit = EGL_OPENGL_BIT,
Type = GlDisplayType.OpenGL2
},
new
{
Attributes = new[]
{
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
},
Api = EGL_OPENGL_ES_API,
RenderableTypeBit = EGL_OPENGL_ES2_BIT,
Type = GlDisplayType.OpenGLES2
}
})
{
if (!_egl.BindApi(cfg.Api))
{
continue;
}
var attribs = new[]
{
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE, cfg.RenderableTypeBit,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_STENCIL_SIZE, 8,
EGL_DEPTH_SIZE, 8,
EGL_NONE
};
if (!_egl.ChooseConfig(_display, attribs, out _config, 1, out int numConfigs))
{
continue;
}
if (numConfigs == 0)
{
continue;
}
_contextAttributes = cfg.Attributes;
Type = cfg.Type;
}
if (_contextAttributes == null)
{
throw new OpenGlException("No suitable EGL config was found");
}
GlInterface = new GlInterface((proc, optional) =>
{
using (var u = new Utf8Buffer(proc))
{
var rv = _egl.GetProcAddress(u);
if (rv == IntPtr.Zero && !optional)
{
throw new OpenGlException("Missing function " + proc);
}
return(rv);
}
});
}