private EGLConfig getMatchingConfig(IEGL10 egl, EGLDisplay display, int[] configAttribs)
{
// Get the number of minimally matching EGL configurations
int[] num_config = new int[1];
egl.EglChooseConfig(display, configAttribs, null, 0, num_config);
int numConfigs = num_config[0];
if (numConfigs <= 0)
{
throw new Exception("No matching EGL configs");
}
// Allocate then read the array of minimally matching EGL configs
EGLConfig[] configs = new EGLConfig[numConfigs];
egl.EglChooseConfig(display, configAttribs, configs, numConfigs, num_config);
// Now return the "best" one
return(chooseConfig(egl, display, configs));
}
internal AndroidAsyncGraphicsContext(AndroidGraphicsContext graphicsContext, AndroidWindow androidWindow, int versionMajor)
{
egl = EGLContext.EGL.JavaCast<IEGL10>();
var pbufferAttribList = new[]
{
EGL10.EglWidth, 1,
EGL10.EglHeight, 1,
EGL10.EglNone
};
EGLDisplay = androidWindow.Display;
var androidGraphicsContext = graphicsContext;
var config = androidGraphicsContext.EGLConfig;
var attribList = new[]
{
EGL10.EglSurfaceType, EGL10.EglPbufferBit,
EGL10.EglRenderableType, 4, // (opengl es 2.0)
EGL10.EglRedSize, graphicsContext.GraphicsMode.ColorFormat.Red,
EGL10.EglGreenSize, graphicsContext.GraphicsMode.ColorFormat.Green,
EGL10.EglBlueSize, graphicsContext.GraphicsMode.ColorFormat.Blue,
EGL10.EglAlphaSize, graphicsContext.GraphicsMode.ColorFormat.Alpha,
EGL10.EglDepthSize, graphicsContext.GraphicsMode.Depth,
EGL10.EglStencilSize, graphicsContext.GraphicsMode.Stencil,
//Egl.SAMPLE_BUFFERS, samples > 0 ? 1 : 0,
EGL10.EglSamples, 0,
EGL10.EglNone,
};
// first ask the number of config available
var numConfig = new int[1];
if (!egl.EglChooseConfig(EGLDisplay, attribList, null, 0, numConfig))
{
throw new InvalidOperationException(string.Format("EglChooseConfig {0:x}", egl.EglGetError()));
}
// retrieve the available configs
var configs = new EGLConfig[numConfig[0]];
if (!egl.EglChooseConfig(EGLDisplay, attribList, configs, configs.Length, numConfig))
{
throw new InvalidOperationException(string.Format("EglChooseConfig {0:x}", egl.EglGetError()));
}
// choose the best config
EGLConfig = ChooseConfigEGL(configs);
// create the surface
EGLSurface = egl.EglCreatePbufferSurface(EGLDisplay, EGLConfig, pbufferAttribList);
if (EGLSurface == EGL10.EglNoSurface)
{
throw new InvalidOperationException(string.Format("EglCreatePBufferSurface {0:x}", egl.EglGetError()));
}
// 0x3098 is EGL_CONTEXT_CLIENT_VERSION
var attribList3 = new[] { 0x3098, versionMajor, EGL10.EglNone };
EGLContext = egl.EglCreateContext(EGLDisplay, config, androidGraphicsContext.EGLContext, attribList3);
if (EGLContext == EGL10.EglNoContext)
{
throw new InvalidOperationException(string.Format("EglCreateContext {0:x}", egl.EglGetError()));
}
}
private void CreateEGLContext()
{
ExEnLog.WriteLine("ExEnAndroidSurfaceView.CreateEGLContext Begin");
// Assumes lockObject is locked
lostEglContext = false;
egl = EGLContext.EGL.JavaCast<IEGL10>();
eglDisplay = egl.EglGetDisplay(EGL10Consts.EglDefaultDisplay);
if(eglDisplay == EGL10Consts.EglNoDisplay)
throw new ExEnSurfaceException("Could not get EGL display");
int[] version = new int[2];
if(!egl.EglInitialize(eglDisplay, version))
throw new ExEnSurfaceException(AddEGLError("Could not initialize EGL display"));
ExEnLog.WriteLine("EGL Version: " + version[0] + "." + version[1]);
// TODO: allow GraphicsDeviceManager to specify a frame buffer configuration
// TODO: test this configuration works on many devices:
int[] configAttribs = new int[] {
//EGL10Consts.EglRedSize, 5,
//EGL10Consts.EglGreenSize, 6,
//EGL10Consts.EglBlueSize, 5,
//EGL10Consts.EglAlphaSize, 0,
//EGL10Consts.EglDepthSize, 4,
//EGL10Consts.EglStencilSize, 0,
EGL10Consts.EglNone };
EGLConfig[] configs = new EGLConfig[1];
int[] numConfigs = new int[1];
if(!egl.EglChooseConfig(eglDisplay, configAttribs, configs, 1, numConfigs))
throw new ExEnSurfaceException(AddEGLError("Could not get EGL config"));
if(numConfigs[0] == 0)
throw new ExEnSurfaceException("No valid EGL configs found");
eglConfig = configs[0];
const int EglContextClientVersion = 0x3098;
int[] contextAttribs = new int[] { EglContextClientVersion, 1, EGL10Consts.EglNone };
eglContext = egl.EglCreateContext(eglDisplay, eglConfig, EGL10Consts.EglNoContext, contextAttribs);
if(eglContext == null || eglContext == EGL10Consts.EglNoContext)
{
eglContext = null;
throw new ExEnSurfaceException(AddEGLError("Could not create EGL context"));
}
eglContextAvailable = true;
ExEnLog.WriteLine("ExEnAndroidSurfaceView.CreateEGLContext End");
}
internal AndroidAsyncGraphicsContext(AndroidGraphicsContext graphicsContext, AndroidWindow androidWindow, int versionMajor)
{
egl = EGLContext.EGL.JavaCast <IEGL10>();
var pbufferAttribList = new[]
{
EGL10.EglWidth, 1,
EGL10.EglHeight, 1,
EGL10.EglNone
};
EGLDisplay = androidWindow.Display;
var androidGraphicsContext = graphicsContext;
var config = androidGraphicsContext.EGLConfig;
var attribList = new[]
{
EGL10.EglSurfaceType, EGL10.EglPbufferBit,
EGL10.EglRenderableType, 4, // (opengl es 2.0)
EGL10.EglRedSize, graphicsContext.GraphicsMode.ColorFormat.Red,
EGL10.EglGreenSize, graphicsContext.GraphicsMode.ColorFormat.Green,
EGL10.EglBlueSize, graphicsContext.GraphicsMode.ColorFormat.Blue,
EGL10.EglAlphaSize, graphicsContext.GraphicsMode.ColorFormat.Alpha,
EGL10.EglDepthSize, graphicsContext.GraphicsMode.Depth,
EGL10.EglStencilSize, graphicsContext.GraphicsMode.Stencil,
//Egl.SAMPLE_BUFFERS, samples > 0 ? 1 : 0,
EGL10.EglSamples, 0,
EGL10.EglNone,
};
// first ask the number of config available
var numConfig = new int[1];
if (!egl.EglChooseConfig(EGLDisplay, attribList, null, 0, numConfig))
{
throw new InvalidOperationException(string.Format("EglChooseConfig {0:x}", egl.EglGetError()));
}
// retrieve the available configs
var configs = new EGLConfig[numConfig[0]];
if (!egl.EglChooseConfig(EGLDisplay, attribList, configs, configs.Length, numConfig))
{
throw new InvalidOperationException(string.Format("EglChooseConfig {0:x}", egl.EglGetError()));
}
// choose the best config
EGLConfig = ChooseConfigEGL(configs);
// create the surface
EGLSurface = egl.EglCreatePbufferSurface(EGLDisplay, EGLConfig, pbufferAttribList);
if (EGLSurface == EGL10.EglNoSurface)
{
throw new InvalidOperationException(string.Format("EglCreatePBufferSurface {0:x}", egl.EglGetError()));
}
// 0x3098 is EGL_CONTEXT_CLIENT_VERSION
var attribList3 = new[] { 0x3098, versionMajor, EGL10.EglNone };
EGLContext = egl.EglCreateContext(EGLDisplay, config, androidGraphicsContext.EGLContext, attribList3);
if (EGLContext == EGL10.EglNoContext)
{
throw new InvalidOperationException(string.Format("EglCreateContext {0:x}", egl.EglGetError()));
}
}