public void InitializeDisplay()
{
if (eglDisplay != null && eglDisplay != EGL10.EglNoDisplay)
{
return;
}
IEGL10 egl = EGLContext.EGL.JavaCast <IEGL10> ();
if (eglDisplay == null)
{
eglDisplay = egl.EglGetDisplay(EGL10.EglDefaultDisplay);
}
if (eglDisplay == EGL10.EglNoDisplay)
{
throw EglException.GenerateException("EglGetDisplay == EGL10.EglNoDisplay", egl, null);
}
int[] version = new int[2];
if (!egl.EglInitialize(eglDisplay, version))
{
throw EglException.GenerateException("EglInitialize", egl, null);
}
}
public EGLSurface CreatePBufferSurface(EGLConfig config, int[] attribList)
{
IEGL10 egl = EGLContext.EGL.JavaCast <IEGL10> ();
EGLSurface result = egl.EglCreatePbufferSurface(eglDisplay, config, attribList);
if (result == null || result == EGL10.EglNoSurface)
{
throw EglException.GenerateException("EglCreatePBufferSurface", egl, null);
}
return(result);
}
public void CreateSurface(EGLConfig config)
{
if (refHolder == null)
{
CreatePBufferSurface(config);
return;
}
IEGL10 egl = EGLContext.EGL.JavaCast <IEGL10> ();
eglSurface = egl.EglCreateWindowSurface(eglDisplay, config, ((Java.Lang.Object)Holder), null);
if (eglSurface == null || eglSurface == EGL10.EglNoSurface)
{
throw EglException.GenerateException("EglCreateWindowSurface", egl, null);
}
}
public bool Swap()
{
bool ret = egl.EglSwapBuffers(window.Display, window.Surface);
if (!ret)
{
int err = egl.EglGetError();
switch (err)
{
case EGL11.EglContextLost:
throw EglContextLostException.GenerateException("EglSwapBuffers", egl, err);
case EGL11.EglBadAlloc:
throw EglBadAllocException.GenerateException("EglSwapBuffers", egl, err);
default:
throw EglException.GenerateException("EglSwapBuffers", egl, err);
}
}
return(ret);
}
public void MakeCurrent(IWindowInfo win)
{
if (win == null)
{
ClearCurrent();
return;
}
var w = win as AndroidWindow;
if (w == null)
{
w = window;
}
var surf = surface == null ? w.Surface : surface;
var ctx = EGLContext;
if (win == null)
{
surf = EGL10.EglNoSurface;
ctx = EGL10.EglNoContext;
}
if (!egl.EglMakeCurrent(window.Display, surf, surf, ctx))
{
int err = egl.EglGetError();
switch (err)
{
case EGL11.EglContextLost:
throw EglContextLostException.GenerateException("MakeCurrent", egl, err);
case EGL11.EglBadAlloc:
throw EglBadAllocException.GenerateException("MakeCurrent", egl, err);
default:
throw EglException.GenerateException("MakeCurrent", egl, err);
}
}
}
void Init(GraphicsMode mode, IWindowInfo win, IGraphicsContext sharedContext,
int major, int minor, GraphicsContextFlags flags)
{
window = win as AndroidWindow;
if (window == null)
{
throw new ArgumentException("win");
}
AndroidGraphicsContext shared = sharedContext as AndroidGraphicsContext;
egl = EGLContext.EGL.JavaCast <IEGL10> ();
window.InitializeDisplay();
if (mode == null)
{
mode = new GraphicsMode();
}
if (mode is AndroidGraphicsMode)
{
GraphicsMode = mode;
}
else
{
GraphicsMode = new AndroidGraphicsMode(window.Display, major, mode);
}
if (shared != null && !PBufferSupported)
{
throw new EglException("Multiple Context's are not supported by this device");
}
if (Mode.Config == null)
{
Mode.Initialize(window.Display, major);
}
/*
* Create an OpenGL ES context. We want to do this as rarely as possible, an
* OpenGL context is a somewhat heavy object.
*/
int EglContextClientVersion = 0x3098;
int EglContextMinorVersion = 0x30fb;
int[] attribList = null;
if (major >= 2)
{
string extensions = egl.EglQueryString(window.Display, Egl.Egl.EXTENSIONS);
if (minor > 0 && !string.IsNullOrEmpty(extensions) && extensions.Contains("EGL_KHR_create_context"))
{
attribList = new int [] { EglContextClientVersion, major,
EglContextMinorVersion, minor,
EGL10.EglNone };
}
else
{
attribList = new int [] { EglContextClientVersion, major,
EGL10.EglNone };
}
}
EGLContext = egl.EglCreateContext(window.Display,
EGLConfig,
shared != null && shared.EGLContext != null ? shared.EGLContext : EGL10.EglNoContext,
attribList);
if (EGLContext == EGL10.EglNoContext)
{
throw EglException.GenerateException("EglCreateContext == EGL10.EglNoContext", egl, null);
}
if (shared != null && shared.EGLContext != null)
{
egl.EglMakeCurrent(window.Display, EGL10.EglNoSurface, EGL10.EglNoSurface, EGL10.EglNoContext);
int[] pbufferAttribList = new int [] { EGL10.EglWidth, 64, EGL10.EglHeight, 64, EGL10.EglNone };
surface = window.CreatePBufferSurface(EGLConfig, pbufferAttribList);
if (surface == EGL10.EglNoSurface)
{
throw new EglException("Could not create PBuffer for shared context!");
}
}
}
void ChooseConfig(EGLDisplay display)
{
#if LOGGING
Log.Verbose("AndroidGraphicsMode", "Requested graphics mode on display {7} with red {0} green {1} blue {2} alpha {3} depth {4} stencil {5} buffers {6}",
ColorFormat.Red, ColorFormat.Green, ColorFormat.Blue, ColorFormat.Alpha, Depth, Stencil, Buffers, display);
#endif
var egl = EGLContext.EGL.JavaCast <IEGL10> ();
try {
if (display == null)
{
display = egl.EglGetDisplay(EGL11.EglDefaultDisplay);
}
} catch {
throw EglException.GenerateException("Failed to get default display", egl, null);
}
List <int> configSpec = new List <int> {
};
if (ColorFormat.Red > 0)
{
configSpec.Add(EGL11.EglRedSize);
configSpec.Add(ColorFormat.Red);
}
if (ColorFormat.Green > 0)
{
configSpec.Add(EGL11.EglGreenSize);
configSpec.Add(ColorFormat.Green);
}
if (ColorFormat.Blue > 0)
{
configSpec.Add(EGL11.EglBlueSize);
configSpec.Add(ColorFormat.Blue);
}
if (ColorFormat.Alpha > 0)
{
configSpec.Add(EGL11.EglAlphaSize);
configSpec.Add(ColorFormat.Alpha);
}
if (Depth > 0)
{
configSpec.Add(EGL11.EglDepthSize);
configSpec.Add(Depth);
}
if (Stencil > 0)
{
configSpec.Add(EGL11.EglStencilSize);
configSpec.Add(Stencil);
}
//http://code.google.com/p/gdc2011-android-opengl/source/browse/trunk/src/com/example/gdc11/MultisampleConfigChooser.java?r=5
if (Samples > 0)
{
// Enable Multi Sampling if we can
configSpec.Add(EGL11.EglSampleBuffers);
configSpec.Add(1);
configSpec.Add(EGL11.EglSamples);
configSpec.Add(Samples);
}
if (Version > 1)
{
configSpec.Add(EGL11.EglRenderableType);
configSpec.Add(4);
}
configSpec.Add(EGL11.EglNone);
int[] num_configs = new int[1];
if (!egl.EglGetConfigs(display, null, 0, num_configs) || num_configs[0] < 1)
{
throw EglException.GenerateException("Failed to retrieve GraphicsMode configurations", egl, null);
}
EGLConfig[] configs = new EGLConfig[1];
if (!egl.EglChooseConfig(display, configSpec.ToArray(), configs, configs.Length, num_configs))
{
Log.Warn("AndroidGraphicsMode", "Failed to choose GraphicsMode with red {0} green {1} blue {2} alpha {3} depth {4} stencil {5} buffers {6}: egl error {7}. Falling back go lowest configuration available.",
ColorFormat.Red, ColorFormat.Green, ColorFormat.Blue, ColorFormat.Alpha, Depth, Stencil, Buffers, egl.EglGetError());
configSpec = new List <int> {
EGL11.EglRedSize, 4,
EGL11.EglGreenSize, 4,
EGL11.EglBlueSize, 4,
EGL11.EglNone
};
if (!egl.EglChooseConfig(display, configSpec.ToArray(), configs, configs.Length, num_configs))
{
throw EglException.GenerateException("Failed to find a valid GraphicsMode configuration", egl, null);
}
}
EGLConfig active_config = configs[0];
#if LOGGING
Log.Verbose("AndroidGraphicsMode", "Checking selected config {0}", active_config);
#endif
if (active_config == null)
{
throw EglException.GenerateException("Failed to find a valid GraphicsMode configuration", egl, null);
}
var r = GetAttrib(egl, display, active_config, EGL11.EglRedSize);
var g = GetAttrib(egl, display, active_config, EGL11.EglGreenSize);
var b = GetAttrib(egl, display, active_config, EGL11.EglBlueSize);
var a = GetAttrib(egl, display, active_config, EGL11.EglAlphaSize);
var depth = GetAttrib(egl, display, active_config, EGL11.EglDepthSize);
var stencil = GetAttrib(egl, display, active_config, EGL11.EglStencilSize);
var s = GetAttrib(egl, display, active_config, EGL11.EglSampleBuffers);
var samples = GetAttrib(egl, display, active_config, EGL11.EglSamples);
var bufs = GetAttrib(egl, display, active_config, EGL11.EglRenderBuffer);
var surfaceType = GetAttrib(egl, display, active_config, EGL11.EglSurfaceType);
#if LOGGING
Log.Verbose("AndroidGraphicsMode", "Requested graphics mode with red {0} green {1} blue {2} alpha {3} depth {4} stencil {5} buffers {6} samples {7}",
ColorFormat.Red, ColorFormat.Green, ColorFormat.Blue, ColorFormat.Alpha, Depth, Stencil, Buffers, Samples);
#endif
this.Index = active_config.Handle;
this.ColorFormat = new ColorFormat(r, g, b, a);
this.Depth = depth;
this.Stencil = stencil;
this.Samples = s > 0 ? samples : 0;
this.Config = active_config;
this.Buffers = bufs;
this.PBufferSupported = (surfaceType & EGL11.EglPbufferBit) == EGL11.EglPbufferBit;
#if LOGGING
Log.Verbose("AndroidGraphicsMode", "Selected graphics mode with red {0} green {1} blue {2} alpha {3} depth {4} stencil {5} buffers {6}, samples {7}",
ColorFormat.Red, ColorFormat.Green, ColorFormat.Blue, ColorFormat.Alpha, Depth, Stencil, Buffers, Samples);
#endif
}