public static void DumpAllConf(EGLDisplay display, int[] desiredConfig)
{
Console.Write("EGL Configs");
nint[] configs = ContextExtension.GetAllConfigs(display, desiredConfig);
int[] attribs = new int[] {
(int)Definitions.Attribute.BufferSize,
Definition.RED_SIZE,
Definition.GREEN_SIZE,
Definition.BLUE_SIZE,
Definition.ALPHA_SIZE,
(int)Definitions.Attribute.DepthSize,
Definition.WIDTH,
Definition.HEIGHT,
(int)Definitions.Attribute.Samples,
(int)Definitions.Attribute.SampleBuffers,
(int)Definitions.Attribute.RenderableType,
(int)Definitions.Attribute.SurfaceType,
(int)Definitions.Attribute.Level,
(int)Definitions.Attribute.ConfigCaveat,
};
for (int i = 0; i < configs.Length; i++)
{
nint conf = configs[i];
Console.Write("{0,-3}:", i);
for (int j = 0; j < attribs.Length; j++)
{
int value;
Egl.eglGetConfigAttrib(display, conf, attribs[j], out value);
Console.Write((j == 0 ? string.Empty : ", ") + "{0} = {1}", Egl.EglConstToString((int)attribs[j]), value);
}
Console.Write("\n");
}
}
public static (EGLDisplay display, EGLContext context, EGLSurface surface, EGLConfig config, int major, int minor) CrateContext(GBM.Gbm gbm, RenderableSurfaceType surfaceType)
{
(EGLDisplay display, EGLContext context, EGLSurface surface, EGLConfig config, int major, int minor)result;
const uint EGL_PLATFORM_GBM_KHR = 0x31D7;
var handler = ContextExtension.OffScreenExtensions.Contains("EGL_EXT_platform_base") ?
(GetPlatformDisplayEXTHandler)Marshal.GetDelegateForFunctionPointer(Egl.eglGetProcAddress("eglGetPlatformDisplayEXT"), typeof(GetPlatformDisplayEXTHandler)) : null;
result.display = handler is null?Egl.eglGetDisplay((nint)gbm.Device.Handle) : handler(EGL_PLATFORM_GBM_KHR, (nint)gbm.Device.Handle, null);
if (result.display == IntPtr.Zero)
{
throw new NotSupportedException("[EGL] GetDisplay failed.: " + Egl.eglGetError());
}
if (!Egl.eglInitialize(result.display, out result.major, out result.minor))
{
throw new NotSupportedException("[EGL] Failed to initialize EGL display. Error code: " + Egl.eglGetError());
}
var isModifiersSupported = GetExtensions(result.display).Contains("EGL_EXT_image_dma_buf_import_modifiers");
if (!Egl.eglBindAPI(RenderApi.GLES))
{
throw new NotSupportedException("[EGL] Failed to bind EGL Api: " + Egl.eglGetError());
}
var desiredConfig = new[] {
Definition.SURFACE_TYPE, (int)surfaceType,
Definition.RENDERABLE_TYPE, Definition.OPENGL_ES3_BIT,
Definition.RED_SIZE, 8,
Definition.GREEN_SIZE, 8,
Definition.BLUE_SIZE, 8,
Definition.ALPHA_SIZE, 8,
Definition.STENCIL_SIZE, 8,
Definition.SAMPLE_BUFFERS, 0,
Definition.SAMPLES, 0,
Definition.NONE
};
result.config = ContextExtension.GetConfig(result.display, desiredConfig);
var contextAttrib = new[] {
Definition.CONTEXT_CLIENT_VERSION, 3,
Definition.NONE
};
result.context = Egl.CreateContext(result.display, result.config, IntPtr.Zero, contextAttrib);
if (result.context == IntPtr.Zero)
{
throw new NotSupportedException(String.Format("[EGL] Failed to create egl context, error {0}.", Egl.eglGetError()));
}
result.surface = Egl.eglCreateWindowSurface(result.display, result.config, gbm.Surface.Handle, null);
if (result.surface == IntPtr.Zero)
{
throw new NotSupportedException(String.Format("[EGL] Failed to create egl surface, error {0}.", Egl.eglGetError()));
}
if (!Egl.eglMakeCurrent(result.display, result.surface, result.surface, result.context))
{
throw new NotSupportedException(String.Format("[EGL] Failed to make current, error {0}.", Egl.eglGetError()));
}
return(result);
}