Graphics.EGL

EGL 1.4, carefully reconstructed. You can still use the rest of C APIs via Graphics.EGL.Base.

• Khronos EGL Registry
• EGL 1.4 Quick Reference [PDF]

EGL Lifecycle

eglInit :: IO Egl

Initialize EGL with default display.

eglInitializeOn

Arguments

:: Maybe EGLNativeDisplay

If any, specify native display pointer.

-> [[(EGLConfAttr, Int32)]]

EGL configurations with many fallbacks.

-> [(EGLContextAttr, Int32)]

Choose GL version here.

-> IO Egl

Initialize EGL with specified display and configurations.

eglResume

Arguments

:: Egl

-> EGLNativeWindow

Window handler

-> IO ()

Start using graphics APIs on this thread. EGL context would be recreated if the last context was lost due to power management events.

eglSuspend :: Egl -> IO ()

Stop using graphics APIs on this thread. Should be called before a sleep.

eglInvalidate :: Egl -> IO ()

Invalidate EGL objects and terminates the display on this thread. You can still reuse Egl because Egl is designed for state management.

Posting the Color Buffer

eglPostFrame :: Egl -> IO ()

Post EGL surface color buffer to a native window.

eglPostInterval :: Egl -> Int32 -> IO Bool

Specifies the minimum number of video frame periods per buffer swap for the window associated with the current context. Returns False on failure. The default swap interval is 1.

Query Context

eglVendor :: Egl -> IO String

eglVersion :: Egl -> IO String

eglExtensions :: Egl -> IO [String]

eglClientAPIs :: Egl -> IO [String]

eglConfigID :: Egl -> IO Int32

eglRenderBuffer :: Egl -> IO Int32

eglContextClientVersion :: Egl -> IO Int32

eglContextClientType :: Egl -> IO Int32

eglScreenDims :: Num a => Egl -> IO (a, a)

Attributes

egl_True :: EGLint

egl_None :: EGLint

egl_False :: EGLint

EGLConfig Attributes

egl_BufferSize :: EGLConfAttr

egl_Conformant :: EGLConfAttr

egl_MatchNativePixmap :: EGLConfAttr

egl_RenderableType :: EGLConfAttr

egl_ColorBufferType :: EGLConfAttr

egl_AlphaMaskSize :: EGLConfAttr

egl_LuminanceSize :: EGLConfAttr

egl_MaxSwapInterval :: EGLConfAttr

egl_MinSwapInterval :: EGLConfAttr

egl_BindToTextureRGBA :: EGLConfAttr

egl_BindToTextureRGB :: EGLConfAttr

egl_TransparentRedValue :: EGLConfAttr

egl_TransparentGreenValue :: EGLConfAttr

egl_TransparentBlueValue :: EGLConfAttr

egl_TransparentType :: EGLConfAttr

egl_SurfaceType :: EGLConfAttr

egl_SampleBuffers :: EGLConfAttr

egl_Samples :: EGLConfAttr

egl_NativeVisualType :: EGLConfAttr

egl_NativeVisualID :: EGLConfAttr

egl_NativeRenderable :: EGLConfAttr

egl_MaxPbufferWidth :: EGLConfAttr

egl_MaxPbufferPixels :: EGLConfAttr

egl_MaxPbufferHeight :: EGLConfAttr

egl_Level :: EGLConfAttr

egl_ConfigID :: EGLConfAttr

egl_ConfigCaveat :: EGLConfAttr

egl_StencilSize :: EGLConfAttr

egl_DepthSize :: EGLConfAttr

egl_RedSize :: EGLConfAttr

egl_GreenSize :: EGLConfAttr

egl_BlueSize :: EGLConfAttr

egl_AlphaSize :: EGLConfAttr

egl_SlowConfig :: EGLint

EGL_CONFIG_CAVEAT value EGL_NONE | 0x3050 | 0x3051

egl_NonConformantConfig :: EGLint

EGL_CONFIG_CAVEAT value EGL_NONE | 0x3050 | 0x3051

egl_TransparentRgb :: EGLint

EGL_TRANSPARENT_TYPE value EGL_NONE | 0x3052

egl_RgbBuffer :: EGLint

EGL_COLOR_BUFFER_TYPE value

egl_LuminanceBuffer :: EGLint

EGL_COLOR_BUFFER_TYPE value

egl_NoTexture :: EGLint

EGL_TEXTURE_FORMAT value

egl_Texture2D :: EGLint

EGL_TEXTURE_FORMAT value

egl_TextureRgba :: EGLint

EGL_TEXTURE_FORMAT value

egl_TextureRgb :: EGLint

EGL_TEXTURE_FORMAT value

egl_PBuffer :: EGLint

EGL_SURFACE_TYPE mask bits

egl_SwapBehaviorPreserved :: EGLint

EGL_SURFACE_TYPE mask bits

egl_MultisampleResolveBox :: EGLint

EGL_SURFACE_TYPE mask bits

egl_VGAlphaFormatPre :: EGLint

EGL_SURFACE_TYPE mask bits

egl_VGColorspaceLinear :: EGLint

EGL_SURFACE_TYPE mask bits

egl_Window :: EGLint

EGL_SURFACE_TYPE mask bits

egl_Pixmap :: EGLint

EGL_SURFACE_TYPE mask bits

egl_OpenGLES :: EGLint

EGL_RENDERABLE_TYPE bitmask

egl_OpenGL :: EGLint

EGL_RENDERABLE_TYPE bitmask

egl_OpenGLES2 :: EGLint

EGL_RENDERABLE_TYPE bitmask

egl_OpenVG :: EGLint

EGL_RENDERABLE_TYPE bitmask

EGLSurface Attributes

egl_Height :: EGLSurfAttr

int Height of surface

egl_ConfigId :: EGLSurfAttr

int ID of EGLConfig surface was created with EGL_HEIGHT integer Height of surface

egl_MultisampleResolve :: EGLSurfAttr

enum Multisample resolve behavior

egl_SwapBehavior :: EGLSurfAttr

enum Buffer swap behavior

egl_PixelAspectRaito :: EGLSurfAttr

int Display aspect ratio

egl_VerticalResolution :: EGLSurfAttr

int Vertical dot pitch

egl_HorizontalResolution :: EGLSurfAttr

int Horizontal dot pitch

egl_VGAlphaFormat :: EGLSurfAttr

enum Alpha format for OpenVG

egl_VGColorspace :: EGLSurfAttr

enum Color space for OpenVG

egl_RenderBuffer :: EGLSurfAttr

enum Render buffer

egl_MipmapLevel :: EGLSurfAttr

int Mipmap level to render to

egl_MipmapTexture :: EGLSurfAttr

boolean True if texture has mipmaps

egl_TextureTarget :: EGLSurfAttr

enum Type of texture: 2D or no texture

egl_TextureFormat :: EGLSurfAttr

enum Format of texture: RGB, RGBA, or no texture

egl_LargestPbuffer :: EGLSurfAttr

boolean If true, create largest pbuffer possible

egl_Width :: EGLSurfAttr

int Width of surface

EGLContext Attributes

egl_ContextClientVersion :: EGLContextAttr

specify 2 or later