#![allow(non_upper_case_globals)]
extern crate khronos;
extern crate libc;
use std::convert::{TryFrom, TryInto};
use std::ffi::CStr;
use std::ffi::CString;
use std::fmt;
use std::ptr;
use khronos::{khronos_int32_t, khronos_utime_nanoseconds_t};
use libc::{c_uint, c_void};
#[link(name = "EGL")]
extern "C" {}
pub type Boolean = c_uint;
pub type Int = khronos_int32_t;
pub type EGLDisplay = *mut c_void;
pub type EGLConfig = *mut c_void;
pub type EGLContext = *mut c_void;
pub type EGLSurface = *mut c_void;
pub type NativeDisplayType = *mut c_void;
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub struct Display(EGLDisplay);
impl Display {
#[inline]
pub unsafe fn from_ptr(ptr: EGLDisplay) -> Display {
Display(ptr)
}
#[inline]
pub fn as_ptr(&self) -> EGLDisplay {
self.0
}
}
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub struct Config(EGLConfig);
impl Config {
#[inline]
pub unsafe fn from_ptr(ptr: EGLConfig) -> Config {
Config(ptr)
}
#[inline]
pub fn as_ptr(&self) -> EGLConfig {
self.0
}
}
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub struct Context(EGLContext);
impl Context {
#[inline]
pub unsafe fn from_ptr(ptr: EGLContext) -> Context {
Context(ptr)
}
#[inline]
pub fn as_ptr(&self) -> EGLContext {
self.0
}
}
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub struct Surface(EGLSurface);
impl Surface {
#[inline]
pub unsafe fn from_ptr(ptr: EGLSurface) -> Surface {
Surface(ptr)
}
#[inline]
pub fn as_ptr(&self) -> EGLSurface {
self.0
}
}
#[cfg(not(android))]
pub type NativePixmapType = *mut c_void;
#[cfg(not(android))]
pub type NativeWindowType = *mut c_void;
#[repr(C)]
#[cfg(android)]
struct android_native_window_t;
#[repr(C)]
#[cfg(android)]
struct egl_native_pixmap_t;
#[cfg(android)]
pub type NativePixmapType = *mut egl_native_pixmap_t;
#[cfg(android)]
pub type NativeWindowType = *mut android_native_window_t;
pub const ALPHA_SIZE: Int = 0x3021;
pub const BAD_ACCESS: Int = 0x3002;
pub const BAD_ALLOC: Int = 0x3003;
pub const BAD_ATTRIBUTE: Int = 0x3004;
pub const BAD_CONFIG: Int = 0x3005;
pub const BAD_CONTEXT: Int = 0x3006;
pub const BAD_CURRENT_SURFACE: Int = 0x3007;
pub const BAD_DISPLAY: Int = 0x3008;
pub const BAD_MATCH: Int = 0x3009;
pub const BAD_NATIVE_PIXMAP: Int = 0x300A;
pub const BAD_NATIVE_WINDOW: Int = 0x300B;
pub const BAD_PARAMETER: Int = 0x300C;
pub const BAD_SURFACE: Int = 0x300D;
pub const BLUE_SIZE: Int = 0x3022;
pub const BUFFER_SIZE: Int = 0x3020;
pub const CONFIG_CAVEAT: Int = 0x3027;
pub const CONFIG_ID: Int = 0x3028;
pub const CORE_NATIVE_ENGINE: Int = 0x305B;
pub const DEPTH_SIZE: Int = 0x3025;
pub const DONT_CARE: Int = -1;
pub const DRAW: Int = 0x3059;
pub const EXTENSIONS: Int = 0x3055;
pub const FALSE: Boolean = 0;
pub const GREEN_SIZE: Int = 0x3023;
pub const HEIGHT: Int = 0x3056;
pub const LARGEST_PBUFFER: Int = 0x3058;
pub const LEVEL: Int = 0x3029;
pub const MAX_PBUFFER_HEIGHT: Int = 0x302A;
pub const MAX_PBUFFER_PIXELS: Int = 0x302B;
pub const MAX_PBUFFER_WIDTH: Int = 0x302C;
pub const NATIVE_RENDERABLE: Int = 0x302D;
pub const NATIVE_VISUAL_ID: Int = 0x302E;
pub const NATIVE_VISUAL_TYPE: Int = 0x302F;
pub const NONE: Int = 0x3038;
pub const ATTRIB_NONE: Attrib = 0x3038;
pub const NON_CONFORMANT_CONFIG: Int = 0x3051;
pub const NOT_INITIALIZED: Int = 0x3001;
pub const NO_CONTEXT: EGLContext = 0 as EGLContext;
pub const NO_DISPLAY: EGLDisplay = 0 as EGLDisplay;
pub const NO_SURFACE: EGLSurface = 0 as EGLSurface;
pub const PBUFFER_BIT: Int = 0x0001;
pub const PIXMAP_BIT: Int = 0x0002;
pub const READ: Int = 0x305A;
pub const RED_SIZE: Int = 0x3024;
pub const SAMPLES: Int = 0x3031;
pub const SAMPLE_BUFFERS: Int = 0x3032;
pub const SLOW_CONFIG: Int = 0x3050;
pub const STENCIL_SIZE: Int = 0x3026;
pub const SUCCESS: Int = 0x3000;
pub const SURFACE_TYPE: Int = 0x3033;
pub const TRANSPARENT_BLUE_VALUE: Int = 0x3035;
pub const TRANSPARENT_GREEN_VALUE: Int = 0x3036;
pub const TRANSPARENT_RED_VALUE: Int = 0x3037;
pub const TRANSPARENT_RGB: Int = 0x3052;
pub const TRANSPARENT_TYPE: Int = 0x3034;
pub const TRUE: Boolean = 1;
pub const VENDOR: Int = 0x3053;
pub const VERSION: Int = 0x3054;
pub const WIDTH: Int = 0x3057;
pub const WINDOW_BIT: Int = 0x0004;
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub enum Error {
NotInitialized,
BadAccess,
BadAlloc,
BadAttribute,
BadContext,
BadConfig,
BadCurrentSurface,
BadDisplay,
BadSurface,
BadMatch,
BadParameter,
BadNativePixmap,
BadNativeWindow,
ContextLost,
}
impl std::error::Error for Error {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
None
}
}
impl Error {
pub fn native(&self) -> Int {
use Error::*;
match self {
NotInitialized => NOT_INITIALIZED,
BadAccess => BAD_ACCESS,
BadAlloc => BAD_ALLOC,
BadAttribute => BAD_ATTRIBUTE,
BadContext => BAD_CONTEXT,
BadConfig => BAD_CONFIG,
BadCurrentSurface => BAD_CURRENT_SURFACE,
BadDisplay => BAD_DISPLAY,
BadSurface => BAD_SURFACE,
BadMatch => BAD_MATCH,
BadParameter => BAD_PARAMETER,
BadNativePixmap => BAD_NATIVE_PIXMAP,
BadNativeWindow => BAD_NATIVE_WINDOW,
ContextLost => CONTEXT_LOST,
}
}
fn message(&self) -> &'static str {
use Error::*;
match self {
NotInitialized => "EGL is not initialized, or could not be initialized, for the specified EGL display connection.",
BadAccess => "EGL cannot access a requested resource (for example a context is bound in another thread.",
BadAlloc => "EGL failed to allocate resources for the requested operation.",
BadAttribute => "An unrecognized attribute or attribute value was passed in the attribute list.",
BadContext => "An Context argument does not name a valid EGL rendering context.",
BadConfig => "An Config argument does not name a valid EGL frame buffer configuration.",
BadCurrentSurface => "The current surface of the calling thread is a window, pixel buffer or pixmap that is no longer valid.",
BadDisplay => "An Display argument does not name a valid EGL display connection.",
BadSurface => "An Surface argument does not name a valid surface (window, pixel buffer or pixmap) configured for GL rendering.",
BadMatch => "Arguments are inconsistent (for example, a valid context requires buffers not supplied by a valid surface.",
BadParameter => "One or more argument values are invalid.",
BadNativePixmap => "A NativePixmapType argument does not refer to a valid native pixmap.",
BadNativeWindow => "A NativeWindowType argument does not refer to a valid native window.",
ContextLost => "A power management event has occurred. The application must destroy all contexts and reinitialise OpenGL ES state and objects to continue rendering."
}
}
}
impl From<Error> for Int {
fn from(e: Error) -> Int {
e.native()
}
}
impl TryFrom<Int> for Error {
type Error = Int;
fn try_from(e: Int) -> Result<Error, Int> {
use Error::*;
match e {
NOT_INITIALIZED => Ok(NotInitialized),
BAD_ACCESS => Ok(BadAccess),
BAD_ALLOC => Ok(BadAlloc),
BAD_ATTRIBUTE => Ok(BadAttribute),
BAD_CONTEXT => Ok(BadContext),
BAD_CONFIG => Ok(BadConfig),
BAD_CURRENT_SURFACE => Ok(BadCurrentSurface),
BAD_DISPLAY => Ok(BadDisplay),
BAD_SURFACE => Ok(BadSurface),
BAD_MATCH => Ok(BadMatch),
BAD_PARAMETER => Ok(BadParameter),
BAD_NATIVE_PIXMAP => Ok(BadNativePixmap),
BAD_NATIVE_WINDOW => Ok(BadNativeWindow),
CONTEXT_LOST => Ok(ContextLost),
_ => Err(e),
}
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.message().fmt(f)
}
}
pub fn check_int_list(attrib_list: &[Int]) -> Result<(), Error> {
if attrib_list.last() == Some(&NONE) {
Ok(())
} else {
Err(Error::BadParameter)
}
}
pub fn check_attrib_list(attrib_list: &[Attrib]) -> Result<(), Error> {
if attrib_list.last() == Some(&ATTRIB_NONE) {
Ok(())
} else {
Err(Error::BadParameter)
}
}
pub fn matching_config_count(display: Display, attrib_list: &[Int]) -> Result<usize, Error> {
check_int_list(attrib_list)?;
unsafe {
let mut count = 0;
if ffi::eglChooseConfig(
display.as_ptr(),
attrib_list.as_ptr(),
ptr::null_mut(),
0,
&mut count,
) == TRUE
{
Ok(count as usize)
} else {
Err(get_error().unwrap())
}
}
}
pub fn choose_config(
display: Display,
attrib_list: &[Int],
configs: &mut Vec<Config>,
) -> Result<(), Error> {
check_int_list(attrib_list)?;
unsafe {
let capacity = configs.capacity();
let mut count = 0;
if ffi::eglChooseConfig(
display.as_ptr(),
attrib_list.as_ptr(),
configs.as_mut_ptr() as *mut EGLConfig,
capacity.try_into().unwrap(),
&mut count,
) == TRUE
{
configs.set_len(count as usize);
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn choose_first_config(display: Display, attrib_list: &[Int]) -> Result<Option<Config>, Error> {
let mut configs = Vec::with_capacity(1);
choose_config(display, attrib_list, &mut configs)?;
Ok(configs.first().map(|config| *config))
}
pub fn copy_buffers(
display: Display,
surface: Surface,
target: NativePixmapType,
) -> Result<(), Error> {
unsafe {
if ffi::eglCopyBuffers(display.as_ptr(), surface.as_ptr(), target) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn create_context(
display: Display,
config: Config,
share_context: Option<Context>,
attrib_list: &[Int],
) -> Result<Context, Error> {
check_int_list(attrib_list)?;
unsafe {
let share_context = match share_context {
Some(share_context) => share_context.as_ptr(),
None => NO_CONTEXT,
};
let context = ffi::eglCreateContext(
display.as_ptr(),
config.as_ptr(),
share_context,
attrib_list.as_ptr(),
);
if context != NO_CONTEXT {
Ok(Context(context))
} else {
Err(get_error().unwrap())
}
}
}
pub fn create_pbuffer_surface(
display: Display,
config: Config,
attrib_list: &[Int],
) -> Result<Surface, Error> {
check_int_list(attrib_list)?;
unsafe {
let surface =
ffi::eglCreatePbufferSurface(display.as_ptr(), config.as_ptr(), attrib_list.as_ptr());
if surface != NO_SURFACE {
Ok(Surface(surface))
} else {
Err(get_error().unwrap())
}
}
}
pub unsafe fn create_pixmap_surface(
display: Display,
config: Config,
pixmap: NativePixmapType,
attrib_list: &[Int],
) -> Result<Surface, Error> {
check_int_list(attrib_list)?;
let surface = ffi::eglCreatePixmapSurface(
display.as_ptr(),
config.as_ptr(),
pixmap,
attrib_list.as_ptr(),
);
if surface != NO_SURFACE {
Ok(Surface(surface))
} else {
Err(get_error().unwrap())
}
}
pub unsafe fn create_window_surface(
display: Display,
config: Config,
window: NativeWindowType,
attrib_list: Option<&[Int]>,
) -> Result<Surface, Error> {
let attrib_list = match attrib_list {
Some(attrib_list) => {
check_int_list(attrib_list)?;
attrib_list.as_ptr()
}
None => ptr::null(),
};
let surface =
ffi::eglCreateWindowSurface(display.as_ptr(), config.as_ptr(), window, attrib_list);
if surface != NO_SURFACE {
Ok(Surface(surface))
} else {
Err(get_error().unwrap())
}
}
pub fn destroy_context(display: Display, ctx: Context) -> Result<(), Error> {
unsafe {
if ffi::eglDestroyContext(display.as_ptr(), ctx.as_ptr()) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn destroy_surface(display: Display, surface: Surface) -> Result<(), Error> {
unsafe {
if ffi::eglDestroySurface(display.as_ptr(), surface.as_ptr()) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn get_config_attrib(display: Display, config: Config, attribute: Int) -> Result<Int, Error> {
unsafe {
let mut value: Int = 0;
if ffi::eglGetConfigAttrib(display.as_ptr(), config.as_ptr(), attribute, &mut value) == TRUE
{
Ok(value)
} else {
Err(get_error().unwrap())
}
}
}
pub fn get_configs(display: Display, configs: &mut Vec<Config>) -> Result<(), Error> {
unsafe {
let capacity = configs.capacity();
let mut count = 0;
if ffi::eglGetConfigs(
display.as_ptr(),
configs.as_mut_ptr() as *mut EGLConfig,
capacity.try_into().unwrap(),
&mut count,
) == TRUE
{
configs.set_len(count as usize);
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn get_current_display() -> Option<Display> {
unsafe {
let display = ffi::eglGetCurrentDisplay();
if display != NO_DISPLAY {
Some(Display(display))
} else {
None
}
}
}
pub fn get_current_surface(readdraw: Int) -> Option<Surface> {
unsafe {
let surface = ffi::eglGetCurrentSurface(readdraw);
if surface != NO_SURFACE {
Some(Surface(surface))
} else {
None
}
}
}
pub fn get_display(display_id: NativeDisplayType) -> Option<Display> {
unsafe {
let display = ffi::eglGetDisplay(display_id);
if display != NO_DISPLAY {
Some(Display(display))
} else {
None
}
}
}
pub fn get_error() -> Option<Error> {
unsafe {
let e = ffi::eglGetError();
if e == SUCCESS {
None
} else {
Some(e.try_into().unwrap())
}
}
}
pub fn get_proc_address(procname: &str) -> Option<extern "C" fn()> {
unsafe {
let string = CString::new(procname).unwrap();
let addr = ffi::eglGetProcAddress(string.as_ptr());
if !(addr as *const ()).is_null() {
Some(addr)
} else {
None
}
}
}
pub fn initialize(display: Display) -> Result<(Int, Int), Error> {
unsafe {
let mut major = 0;
let mut minor = 0;
if ffi::eglInitialize(display.as_ptr(), &mut major, &mut minor) == TRUE {
Ok((major, minor))
} else {
Err(get_error().unwrap())
}
}
}
pub fn make_current(
display: Display,
draw: Option<Surface>,
read: Option<Surface>,
ctx: Option<Context>,
) -> Result<(), Error> {
unsafe {
let draw = match draw {
Some(draw) => draw.as_ptr(),
None => NO_SURFACE,
};
let read = match read {
Some(read) => read.as_ptr(),
None => NO_SURFACE,
};
let ctx = match ctx {
Some(ctx) => ctx.as_ptr(),
None => NO_CONTEXT,
};
if ffi::eglMakeCurrent(display.as_ptr(), draw, read, ctx) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn query_context(display: Display, ctx: Context, attribute: Int) -> Result<Int, Error> {
unsafe {
let mut value = 0;
if ffi::eglQueryContext(display.as_ptr(), ctx.as_ptr(), attribute, &mut value) == TRUE {
Ok(value)
} else {
Err(get_error().unwrap())
}
}
}
pub fn query_string(display: Option<Display>, name: Int) -> Result<&'static CStr, Error> {
unsafe {
let display_ptr = match display {
Some(display) => display.as_ptr(),
None => NO_DISPLAY
};
let c_str = ffi::eglQueryString(display_ptr, name);
if !c_str.is_null() {
Ok(CStr::from_ptr(c_str))
} else {
Err(get_error().unwrap())
}
}
}
pub fn query_surface(display: Display, surface: Surface, attribute: Int) -> Result<Int, Error> {
unsafe {
let mut value = 0;
if ffi::eglQuerySurface(display.as_ptr(), surface.as_ptr(), attribute, &mut value) == TRUE {
Ok(value)
} else {
Err(get_error().unwrap())
}
}
}
pub fn swap_buffers(display: Display, surface: Surface) -> Result<(), Error> {
unsafe {
if ffi::eglSwapBuffers(display.as_ptr(), surface.as_ptr()) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn terminate(display: Display) -> Result<(), Error> {
unsafe {
if ffi::eglTerminate(display.as_ptr()) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn wait_gl() -> Result<(), Error> {
unsafe {
if ffi::eglWaitGL() == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn wait_native(engine: Int) -> Result<(), Error> {
unsafe {
if ffi::eglWaitNative(engine) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub const BACK_BUFFER: Int = 0x3084;
pub const BIND_TO_TEXTURE_RGB: Int = 0x3039;
pub const BIND_TO_TEXTURE_RGBA: Int = 0x303A;
pub const CONTEXT_LOST: Int = 0x300E;
pub const MIN_SWAP_INTERVAL: Int = 0x303B;
pub const MAX_SWAP_INTERVAL: Int = 0x303C;
pub const MIPMAP_TEXTURE: Int = 0x3082;
pub const MIPMAP_LEVEL: Int = 0x3083;
pub const NO_TEXTURE: Int = 0x305C;
pub const TEXTURE_2D: Int = 0x305F;
pub const TEXTURE_FORMAT: Int = 0x3080;
pub const TEXTURE_RGB: Int = 0x305D;
pub const TEXTURE_RGBA: Int = 0x305E;
pub const TEXTURE_TARGET: Int = 0x3081;
pub fn bind_tex_image(display: Display, surface: Surface, buffer: Int) -> Result<(), Error> {
unsafe {
if ffi::eglBindTexImage(display.as_ptr(), surface.as_ptr(), buffer) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn release_tex_image(display: Display, surface: Surface, buffer: Int) -> Result<(), Error> {
unsafe {
if ffi::eglReleaseTexImage(display.as_ptr(), surface.as_ptr(), buffer) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn surface_attrib(
display: Display,
surface: Surface,
attribute: Int,
value: Int,
) -> Result<(), Error> {
unsafe {
if ffi::eglSurfaceAttrib(display.as_ptr(), surface.as_ptr(), attribute, value) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn swap_interval(display: Display, interval: Int) -> Result<(), Error> {
unsafe {
if ffi::eglSwapInterval(display.as_ptr(), interval) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub type Enum = c_uint;
pub type EGLClientBuffer = *mut c_void;
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub struct ClientBuffer(EGLClientBuffer);
impl ClientBuffer {
#[inline]
pub unsafe fn from_ptr(ptr: EGLClientBuffer) -> ClientBuffer {
ClientBuffer(ptr)
}
#[inline]
pub fn as_ptr(&self) -> EGLClientBuffer {
self.0
}
}
pub const ALPHA_FORMAT: Int = 0x3088;
pub const ALPHA_FORMAT_NONPRE: Int = 0x308B;
pub const ALPHA_FORMAT_PRE: Int = 0x308C;
pub const ALPHA_MASK_SIZE: Int = 0x303E;
pub const BUFFER_PRESERVED: Int = 0x3094;
pub const BUFFER_DESTROYED: Int = 0x3095;
pub const CLIENT_APIS: Int = 0x308D;
pub const COLORSPACE: Int = 0x3087;
pub const COLORSPACE_sRGB: Int = 0x3089;
pub const COLORSPACE_LINEAR: Int = 0x308A;
pub const COLOR_BUFFER_TYPE: Int = 0x303F;
pub const CONTEXT_CLIENT_TYPE: Int = 0x3097;
pub const DISPLAY_SCALING: Int = 10000;
pub const HORIZONTAL_RESOLUTION: Int = 0x3090;
pub const LUMINANCE_BUFFER: Int = 0x308F;
pub const LUMINANCE_SIZE: Int = 0x303D;
pub const OPENGL_ES_BIT: Int = 0x0001;
pub const OPENVG_BIT: Int = 0x0002;
pub const OPENGL_ES_API: Enum = 0x30A0;
pub const OPENVG_API: Enum = 0x30A1;
pub const OPENVG_IMAGE: Int = 0x3096;
pub const PIXEL_ASPECT_RATIO: Int = 0x3092;
pub const RENDERABLE_TYPE: Int = 0x3040;
pub const RENDER_BUFFER: Int = 0x3086;
pub const RGB_BUFFER: Int = 0x308E;
pub const SINGLE_BUFFER: Int = 0x3085;
pub const SWAP_BEHAVIOR: Int = 0x3093;
pub const UNKNOWN: Int = -1;
pub const VERTICAL_RESOLUTION: Int = 0x3091;
pub fn bind_api(api: Enum) -> Result<(), Error> {
unsafe {
if ffi::eglBindAPI(api) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn query_api() -> Enum {
unsafe { ffi::eglQueryAPI() }
}
pub fn create_pbuffer_from_client_buffer(
display: Display,
buffer_type: Enum,
buffer: ClientBuffer,
config: Config,
attrib_list: &[Int],
) -> Result<Surface, Error> {
check_int_list(attrib_list)?;
unsafe {
let surface = ffi::eglCreatePbufferFromClientBuffer(
display.as_ptr(),
buffer_type,
buffer.as_ptr(),
config.as_ptr(),
attrib_list.as_ptr(),
);
if surface != NO_SURFACE {
Ok(Surface(surface))
} else {
Err(get_error().unwrap())
}
}
}
pub fn release_thread() -> Result<(), Error> {
unsafe {
if ffi::eglReleaseThread() == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn wait_client() -> Result<(), Error> {
unsafe {
if ffi::eglWaitClient() == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub const CONFORMANT: Int = 0x3042;
pub const CONTEXT_CLIENT_VERSION: Int = 0x3098;
pub const MATCH_NATIVE_PIXMAP: Int = 0x3041;
pub const OPENGL_ES2_BIT: Int = 0x0004;
pub const VG_ALPHA_FORMAT: Int = 0x3088;
pub const VG_ALPHA_FORMAT_NONPRE: Int = 0x308B;
pub const VG_ALPHA_FORMAT_PRE: Int = 0x308C;
pub const VG_ALPHA_FORMAT_PRE_BIT: Int = 0x0040;
pub const VG_COLORSPACE: Int = 0x3087;
pub const VG_COLORSPACE_sRGB: Int = 0x3089;
pub const VG_COLORSPACE_LINEAR: Int = 0x308A;
pub const VG_COLORSPACE_LINEAR_BIT: Int = 0x0020;
pub const DEFAULT_DISPLAY: NativeDisplayType = 0 as NativeDisplayType;
pub const MULTISAMPLE_RESOLVE_BOX_BIT: Int = 0x0200;
pub const MULTISAMPLE_RESOLVE: Int = 0x3099;
pub const MULTISAMPLE_RESOLVE_DEFAULT: Int = 0x309A;
pub const MULTISAMPLE_RESOLVE_BOX: Int = 0x309B;
pub const OPENGL_API: Enum = 0x30A2;
pub const OPENGL_BIT: Int = 0x0008;
pub const SWAP_BEHAVIOR_PRESERVED_BIT: Int = 0x0400;
pub fn get_current_context() -> Option<Context> {
unsafe {
let context = ffi::eglGetCurrentContext();
if context != NO_CONTEXT {
Some(Context(context))
} else {
None
}
}
}
pub type Attrib = usize;
pub type Time = khronos_utime_nanoseconds_t;
pub type EGLSync = *mut c_void;
pub type EGLImage = *mut c_void;
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub struct Sync(EGLSync);
impl Sync {
#[inline]
pub unsafe fn from_ptr(ptr: EGLSync) -> Sync {
Sync(ptr)
}
#[inline]
pub fn as_ptr(&self) -> EGLSync {
self.0
}
}
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub struct Image(EGLImage);
impl Image {
#[inline]
pub unsafe fn from_ptr(ptr: EGLImage) -> Image {
Image(ptr)
}
#[inline]
pub fn as_ptr(&self) -> EGLImage {
self.0
}
}
pub const CONTEXT_MAJOR_VERSION: Int = 0x3098;
pub const CONTEXT_MINOR_VERSION: Int = 0x30FB;
pub const CONTEXT_OPENGL_PROFILE_MASK: Int = 0x30FD;
pub const CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY: Int = 0x31BD;
pub const NO_RESET_NOTIFICATION: Int = 0x31BE;
pub const LOSE_CONTEXT_ON_RESET: Int = 0x31BF;
pub const CONTEXT_OPENGL_CORE_PROFILE_BIT: Int = 0x00000001;
pub const CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT: Int = 0x00000002;
pub const CONTEXT_OPENGL_DEBUG: Int = 0x31B0;
pub const CONTEXT_OPENGL_FORWARD_COMPATIBLE: Int = 0x31B1;
pub const CONTEXT_OPENGL_ROBUST_ACCESS: Int = 0x31B2;
pub const OPENGL_ES3_BIT: Int = 0x00000040;
pub const CL_EVENT_HANDLE: Int = 0x309C;
pub const SYNC_CL_EVENT: Int = 0x30FE;
pub const SYNC_CL_EVENT_COMPLETE: Int = 0x30FF;
pub const SYNC_PRIOR_COMMANDS_COMPLETE: Int = 0x30F0;
pub const SYNC_TYPE: Int = 0x30F7;
pub const SYNC_STATUS: Int = 0x30F1;
pub const SYNC_CONDITION: Int = 0x30F8;
pub const SIGNALED: Int = 0x30F2;
pub const UNSIGNALED: Int = 0x30F3;
pub const SYNC_FLUSH_COMMANDS_BIT: Int = 0x0001;
pub const FOREVER: u64 = 0xFFFFFFFFFFFFFFFFu64;
pub const TIMEOUT_EXPIRED: Int = 0x30F5;
pub const CONDITION_SATISFIED: Int = 0x30F6;
pub const NO_SYNC: EGLSync = 0 as EGLSync;
pub const SYNC_FENCE: Int = 0x30F9;
pub const GL_COLORSPACE: Int = 0x309D;
pub const GL_COLORSPACE_SRGB: Int = 0x3089;
pub const GL_COLORSPACE_LINEAR: Int = 0x308A;
pub const GL_RENDERBUFFER: Int = 0x30B9;
pub const GL_TEXTURE_2D: Int = 0x30B1;
pub const GL_TEXTURE_LEVEL: Int = 0x30BC;
pub const GL_TEXTURE_3D: Int = 0x30B2;
pub const GL_TEXTURE_ZOFFSET: Int = 0x30BD;
pub const GL_TEXTURE_CUBE_MAP_POSITIVE_X: Int = 0x30B3;
pub const GL_TEXTURE_CUBE_MAP_NEGATIVE_X: Int = 0x30B4;
pub const GL_TEXTURE_CUBE_MAP_POSITIVE_Y: Int = 0x30B5;
pub const GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: Int = 0x30B6;
pub const GL_TEXTURE_CUBE_MAP_POSITIVE_Z: Int = 0x30B7;
pub const GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: Int = 0x30B8;
pub const IMAGE_PRESERVED: Int = 0x30D2;
pub const NO_IMAGE: EGLImage = 0 as EGLImage;
pub unsafe fn create_sync(display: Display, ty: Enum, attrib_list: &[Attrib]) -> Result<Sync, Error> {
check_attrib_list(attrib_list)?;
let sync = ffi::eglCreateSync(display.as_ptr(), ty, attrib_list.as_ptr());
if sync != NO_SYNC {
Ok(Sync(sync))
} else {
Err(get_error().unwrap())
}
}
pub unsafe fn destroy_sync(display: Display, sync: Sync) -> Result<(), Error> {
if ffi::eglDestroySync(display.as_ptr(), sync.as_ptr()) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
pub unsafe fn client_wait_sync(display: Display, sync: Sync, flags: Int, timeout: Time) -> Result<Int, Error> {
let status = ffi::eglClientWaitSync(display.as_ptr(), sync.as_ptr(), flags, timeout);
if status != FALSE as Int {
Ok(status)
} else {
Err(get_error().unwrap())
}
}
pub unsafe fn get_sync_attrib(display: Display, sync: Sync, attribute: Int) -> Result<Attrib, Error> {
let mut value = 0;
if ffi::eglGetSyncAttrib(
display.as_ptr(),
sync.as_ptr(),
attribute,
&mut value as *mut Attrib,
) == TRUE
{
Ok(value)
} else {
Err(get_error().unwrap())
}
}
pub fn create_image(
display: Display,
ctx: Context,
target: Enum,
buffer: ClientBuffer,
attrib_list: &[Attrib],
) -> Result<Image, Error> {
check_attrib_list(attrib_list)?;
unsafe {
let image = ffi::eglCreateImage(
display.as_ptr(),
ctx.as_ptr(),
target,
buffer.as_ptr(),
attrib_list.as_ptr(),
);
if image != NO_IMAGE {
Ok(Image(image))
} else {
Err(get_error().unwrap())
}
}
}
pub fn destroy_image(display: Display, image: Image) -> Result<(), Error> {
unsafe {
if ffi::eglDestroyImage(display.as_ptr(), image.as_ptr()) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
pub fn get_platform_display(
platform: Enum,
native_display: *mut c_void,
attrib_list: &[Attrib],
) -> Result<Display, Error> {
check_attrib_list(attrib_list)?;
unsafe {
let display = ffi::eglGetPlatformDisplay(platform, native_display, attrib_list.as_ptr());
if display != NO_DISPLAY {
Ok(Display(display))
} else {
Err(get_error().unwrap())
}
}
}
pub fn create_platform_window_surface(
display: Display,
config: Config,
native_window: *mut c_void,
attrib_list: &[Attrib],
) -> Result<Surface, Error> {
check_attrib_list(attrib_list)?;
unsafe {
let surface = ffi::eglCreatePlatformWindowSurface(
display.as_ptr(),
config.as_ptr(),
native_window,
attrib_list.as_ptr(),
);
if surface != NO_SURFACE {
Ok(Surface(surface))
} else {
Err(get_error().unwrap())
}
}
}
pub fn create_platform_pixmap_surface(
display: Display,
config: Config,
native_pixmap: *mut c_void,
attrib_list: &[Attrib],
) -> Result<Surface, Error> {
check_attrib_list(attrib_list)?;
unsafe {
let surface = ffi::eglCreatePlatformPixmapSurface(
display.as_ptr(),
config.as_ptr(),
native_pixmap,
attrib_list.as_ptr(),
);
if surface != NO_SURFACE {
Ok(Surface(surface))
} else {
Err(get_error().unwrap())
}
}
}
pub fn wait_sync(display: Display, sync: Sync, flags: Int) -> Result<(), Error> {
unsafe {
if ffi::eglWaitSync(display.as_ptr(), sync.as_ptr(), flags) == TRUE {
Ok(())
} else {
Err(get_error().unwrap())
}
}
}
mod ffi {
use libc::{c_char, c_void};
use super::{
Attrib, Boolean, EGLClientBuffer, EGLConfig, EGLContext, EGLDisplay, EGLImage, EGLSurface,
EGLSync, Enum, Int, NativeDisplayType, NativePixmapType, NativeWindowType, Time,
};
extern "C" {
pub fn eglChooseConfig(
display: EGLDisplay,
attrib_list: *const Int,
configs: *mut EGLConfig,
config_size: Int,
num_config: *mut Int,
) -> Boolean;
pub fn eglCopyBuffers(
display: EGLDisplay,
surface: EGLSurface,
target: NativePixmapType,
) -> Boolean;
pub fn eglCreateContext(
display: EGLDisplay,
config: EGLConfig,
share_context: EGLContext,
attrib_list: *const Int,
) -> EGLContext;
pub fn eglCreatePbufferSurface(
display: EGLDisplay,
config: EGLConfig,
attrib_list: *const Int,
) -> EGLSurface;
pub fn eglCreatePixmapSurface(
display: EGLDisplay,
config: EGLConfig,
pixmap: NativePixmapType,
attrib_list: *const Int,
) -> EGLSurface;
pub fn eglCreateWindowSurface(
display: EGLDisplay,
config: EGLConfig,
win: NativeWindowType,
attrib_list: *const Int,
) -> EGLSurface;
pub fn eglDestroyContext(display: EGLDisplay, ctx: EGLContext) -> Boolean;
pub fn eglDestroySurface(display: EGLDisplay, surface: EGLSurface) -> Boolean;
pub fn eglGetConfigAttrib(
display: EGLDisplay,
config: EGLConfig,
attribute: Int,
value: *mut Int,
) -> Boolean;
pub fn eglGetConfigs(
display: EGLDisplay,
configs: *mut EGLConfig,
config_size: Int,
num_config: *mut Int,
) -> Boolean;
pub fn eglGetCurrentDisplay() -> EGLDisplay;
pub fn eglGetCurrentSurface(readdraw: Int) -> EGLSurface;
pub fn eglGetDisplay(display_id: NativeDisplayType) -> EGLDisplay;
pub fn eglGetError() -> Int;
pub fn eglGetProcAddress(procname: *const c_char) -> extern "C" fn();
pub fn eglInitialize(display: EGLDisplay, major: *mut Int, minor: *mut Int) -> Boolean;
pub fn eglMakeCurrent(
display: EGLDisplay,
draw: EGLSurface,
read: EGLSurface,
ctx: EGLContext,
) -> Boolean;
pub fn eglQueryContext(
display: EGLDisplay,
ctx: EGLContext,
attribute: Int,
value: *mut Int,
) -> Boolean;
pub fn eglQueryString(display: EGLDisplay, name: Int) -> *const c_char;
pub fn eglQuerySurface(
display: EGLDisplay,
surface: EGLSurface,
attribute: Int,
value: *mut Int,
) -> Boolean;
pub fn eglSwapBuffers(display: EGLDisplay, surface: EGLSurface) -> Boolean;
pub fn eglTerminate(display: EGLDisplay) -> Boolean;
pub fn eglWaitGL() -> Boolean;
pub fn eglWaitNative(engine: Int) -> Boolean;
pub fn eglBindTexImage(display: EGLDisplay, surface: EGLSurface, buffer: Int) -> Boolean;
pub fn eglReleaseTexImage(display: EGLDisplay, surface: EGLSurface, buffer: Int) -> Boolean;
pub fn eglSurfaceAttrib(
display: EGLDisplay,
surface: EGLSurface,
attribute: Int,
value: Int,
) -> Boolean;
pub fn eglSwapInterval(display: EGLDisplay, interval: Int) -> Boolean;
pub fn eglBindAPI(api: Enum) -> Boolean;
pub fn eglQueryAPI() -> Enum;
pub fn eglCreatePbufferFromClientBuffer(
display: EGLDisplay,
buftype: Enum,
buffer: EGLClientBuffer,
config: EGLConfig,
attrib_list: *const Int,
) -> EGLSurface;
pub fn eglReleaseThread() -> Boolean;
pub fn eglWaitClient() -> Boolean;
pub fn eglGetCurrentContext() -> EGLContext;
pub fn eglCreateSync(display: EGLDisplay, type_: Enum, attrib_list: *const Attrib) -> EGLSync;
pub fn eglDestroySync(display: EGLDisplay, sync: EGLSync) -> Boolean;
pub fn eglClientWaitSync(display: EGLDisplay, sync: EGLSync, flags: Int, timeout: Time) -> Int;
pub fn eglGetSyncAttrib(
display: EGLDisplay,
sync: EGLSync,
attribute: Int,
value: *mut Attrib,
) -> Boolean;
pub fn eglCreateImage(
display: EGLDisplay,
ctx: EGLContext,
target: Enum,
buffer: EGLClientBuffer,
attrib_list: *const Attrib,
) -> EGLImage;
pub fn eglDestroyImage(display: EGLDisplay, image: EGLImage) -> Boolean;
pub fn eglGetPlatformDisplay(
platform: Enum,
native_display: *mut c_void,
attrib_list: *const Attrib,
) -> EGLDisplay;
pub fn eglCreatePlatformWindowSurface(
display: EGLDisplay,
config: EGLConfig,
native_window: *mut c_void,
attrib_list: *const Attrib,
) -> EGLSurface;
pub fn eglCreatePlatformPixmapSurface(
display: EGLDisplay,
config: EGLConfig,
native_pixmap: *mut c_void,
attrib_list: *const Attrib,
) -> EGLSurface;
pub fn eglWaitSync(display: EGLDisplay, sync: EGLSync, flags: Int) -> Boolean;
}
}