public void CreatePbufferSurface(int width, int height)
{
CheckIsNotReleased();
if (_eglSurface != EGL14.EglNoSurface)
{
throw new RuntimeException("Already has an EGLSurface");
}
var surfaceAttribs = new[] { 12375, width, 12374, height, 12344 };
_eglSurface = EGL14.EglCreatePbufferSurface(_eglDisplay, _eglConfig, surfaceAttribs, 0);
if (_eglSurface == EGL14.EglNoSurface)
{
throw new RuntimeException("Failed to create pixel buffer surface with size " + width + "x" +
height + ": 0x" + Integer.ToHexString(EGL14.EglGetError()));
}
}
/**
* Prepares EGL. We want a GLES 2.0 context and a surface that supports pbuffer.
*/
private void eglSetup()
{
mEGLDisplay = EGL14.EglGetDisplay(EGL14.EglDefaultDisplay);
if (mEGLDisplay == EGL14.EglNoDisplay)
{
throw new RuntimeException("unable to get EGL14 display");
}
int[] version = new int[2];
if (!EGL14.EglInitialize(mEGLDisplay, version, 0, version, 1))
{
mEGLDisplay = null;
throw new RuntimeException("unable to initialize EGL14");
}
// Configure EGL for pbuffer and OpenGL ES 2.0, 24-bit RGB.
int[] attribList =
{
EGL14.EglRedSize, 8,
EGL14.EglGreenSize, 8,
EGL14.EglBlueSize, 8,
EGL14.EglAlphaSize, 8,
EGL14.EglRenderableType, EGL14.EglOpenglEs2Bit,
EGL14.EglSurfaceType, EGL14.EglPbufferBit,
EGL14.EglNone
};
EGLConfig[] configs = new EGLConfig[1];
int[] numConfigs = new int[1];
if (!EGL14.EglChooseConfig(mEGLDisplay, attribList, 0, configs, 0, configs.Length, numConfigs, 0))
{
throw new RuntimeException("unable to find RGB888+recordable ES2 EGL config");
}
// Configure context for OpenGL ES 2.0.
int[] attrib_list =
{
EGL14.EglContextClientVersion, 2,
EGL14.EglNone
};
mEGLContext = EGL14.EglCreateContext(mEGLDisplay, configs[0], EGL14.EglNoContext, attrib_list, 0);
checkEglError("eglCreateContext");
if (mEGLContext == null)
{
throw new RuntimeException("null context");
}
// Create a pbuffer surface.
int[] surfaceAttribs =
{
EGL14.EglWidth, mWidth,
EGL14.EglHeight, mHeight,
EGL14.EglNone
};
mEGLSurface = EGL14.EglCreatePbufferSurface(mEGLDisplay, configs[0], surfaceAttribs, 0);
checkEglError("eglCreatePbufferSurface");
if (mEGLSurface == null)
{
throw new RuntimeException("surface was null");
}
}