diff options
Diffstat (limited to 'src/api/egl/mod.rs')
| -rw-r--r-- | src/api/egl/mod.rs | 211 |
1 files changed, 113 insertions, 98 deletions
diff --git a/src/api/egl/mod.rs b/src/api/egl/mod.rs index 015396e..4cd7a7c 100644 --- a/src/api/egl/mod.rs +++ b/src/api/egl/mod.rs @@ -1,4 +1,5 @@ -#![cfg(any(target_os = "windows", target_os = "linux", target_os = "android"))] +#![cfg(any(target_os = "windows", target_os = "linux", target_os = "android", + target_os = "dragonfly", target_os = "freebsd"))] #![allow(unused_variables)] use BuilderAttribs; @@ -41,6 +42,116 @@ pub struct Context { pixel_format: PixelFormat, } +#[cfg(target_os = "android")] +fn get_native_display(egl: &ffi::egl::Egl, + native_display: NativeDisplay) -> *const libc::c_void { + unsafe { egl.GetDisplay(ffi::egl::DEFAULT_DISPLAY as *mut _) } +} + +#[cfg(not(target_os = "android"))] +fn get_native_display(egl: &ffi::egl::Egl, + native_display: NativeDisplay) -> *const libc::c_void { + // the first step is to query the list of extensions without any display, if supported + let dp_extensions = unsafe { + let p = egl.QueryString(ffi::egl::NO_DISPLAY, ffi::egl::EXTENSIONS as i32); + + // this possibility is available only with EGL 1.5 or EGL_EXT_platform_base, otherwise + // `eglQueryString` returns an error + if p.is_null() { + vec![] + } else { + let p = CStr::from_ptr(p); + let list = String::from_utf8(p.to_bytes().to_vec()).unwrap_or_else(|_| format!("")); + list.split(' ').map(|e| e.to_string()).collect::<Vec<_>>() + } + }; + + let has_dp_extension = |e: &str| dp_extensions.iter().find(|s| s == &e).is_some(); + + match native_display { + // Note: Some EGL implementations are missing the `eglGetPlatformDisplay(EXT)` symbol + // despite reporting `EGL_EXT_platform_base`. I'm pretty sure this is a bug. + // Therefore we detect whether the symbol is loaded in addition to checking for + // extensions. + NativeDisplay::X11(display) if has_dp_extension("EGL_KHR_platform_x11") && + egl.GetPlatformDisplay.is_loaded() => + { + let d = display.unwrap_or(ffi::egl::DEFAULT_DISPLAY as *const _); + // TODO: `PLATFORM_X11_SCREEN_KHR` + unsafe { egl.GetPlatformDisplay(ffi::egl::PLATFORM_X11_KHR, d as *mut _, + ptr::null()) } + }, + + NativeDisplay::X11(display) if has_dp_extension("EGL_EXT_platform_x11") && + egl.GetPlatformDisplayEXT.is_loaded() => + { + let d = display.unwrap_or(ffi::egl::DEFAULT_DISPLAY as *const _); + // TODO: `PLATFORM_X11_SCREEN_EXT` + unsafe { egl.GetPlatformDisplayEXT(ffi::egl::PLATFORM_X11_EXT, d as *mut _, + ptr::null()) } + }, + + NativeDisplay::Gbm(display) if has_dp_extension("EGL_KHR_platform_gbm") && + egl.GetPlatformDisplay.is_loaded() => + { + let d = display.unwrap_or(ffi::egl::DEFAULT_DISPLAY as *const _); + unsafe { egl.GetPlatformDisplay(ffi::egl::PLATFORM_GBM_KHR, d as *mut _, + ptr::null()) } + }, + + NativeDisplay::Gbm(display) if has_dp_extension("EGL_MESA_platform_gbm") && + egl.GetPlatformDisplayEXT.is_loaded() => + { + let d = display.unwrap_or(ffi::egl::DEFAULT_DISPLAY as *const _); + unsafe { egl.GetPlatformDisplayEXT(ffi::egl::PLATFORM_GBM_KHR, d as *mut _, + ptr::null()) } + }, + + NativeDisplay::Wayland(display) if has_dp_extension("EGL_KHR_platform_wayland") && + egl.GetPlatformDisplay.is_loaded() => + { + let d = display.unwrap_or(ffi::egl::DEFAULT_DISPLAY as *const _); + unsafe { egl.GetPlatformDisplay(ffi::egl::PLATFORM_WAYLAND_KHR, d as *mut _, + ptr::null()) } + }, + + NativeDisplay::Wayland(display) if has_dp_extension("EGL_EXT_platform_wayland") && + egl.GetPlatformDisplayEXT.is_loaded() => + { + let d = display.unwrap_or(ffi::egl::DEFAULT_DISPLAY as *const _); + unsafe { egl.GetPlatformDisplayEXT(ffi::egl::PLATFORM_WAYLAND_EXT, d as *mut _, + ptr::null()) } + }, + + // TODO: This will never be reached right now, as the android egl bindings + // use the static generator, so can't rely on GetPlatformDisplay(EXT). + NativeDisplay::Android if has_dp_extension("EGL_KHR_platform_android") && + egl.GetPlatformDisplay.is_loaded() => + { + unsafe { egl.GetPlatformDisplay(ffi::egl::PLATFORM_ANDROID_KHR, + ffi::egl::DEFAULT_DISPLAY as *mut _, ptr::null()) } + }, + + NativeDisplay::Device(display) if has_dp_extension("EGL_EXT_platform_device") && + egl.GetPlatformDisplay.is_loaded() => + { + unsafe { egl.GetPlatformDisplay(ffi::egl::PLATFORM_DEVICE_EXT, display as *mut _, + ptr::null()) } + }, + + NativeDisplay::X11(Some(display)) | NativeDisplay::Gbm(Some(display)) | + NativeDisplay::Wayland(Some(display)) | NativeDisplay::Device(display) | + NativeDisplay::Other(Some(display)) => { + unsafe { egl.GetDisplay(display as *mut _) } + } + + NativeDisplay::X11(None) | NativeDisplay::Gbm(None) | NativeDisplay::Wayland(None) | + NativeDisplay::Android | NativeDisplay::Other(None) => { + unsafe { egl.GetDisplay(ffi::egl::DEFAULT_DISPLAY as *mut _) } + }, + } +} + impl Context { /// Start building an EGL context. /// @@ -55,104 +166,8 @@ impl Context { unimplemented!() } - // the first step is to query the list of extensions without any display, if supported - let dp_extensions = unsafe { - let p = egl.QueryString(ffi::egl::NO_DISPLAY, ffi::egl::EXTENSIONS as i32); - - // this possibility is available only with EGL 1.5 or EGL_EXT_platform_base, otherwise - // `eglQueryString` returns an error - if p.is_null() { - vec![] - } else { - let p = CStr::from_ptr(p); - let list = String::from_utf8(p.to_bytes().to_vec()).unwrap_or_else(|_| format!("")); - list.split(' ').map(|e| e.to_string()).collect::<Vec<_>>() - } - }; - - let has_dp_extension = |e: &str| dp_extensions.iter().find(|s| s == &e).is_some(); - // calling `eglGetDisplay` or equivalent - let display = match native_display { - // Note: Some EGL implementations are missing the `eglGetPlatformDisplay(EXT)` symbol - // despite reporting `EGL_EXT_platform_base`. I'm pretty sure this is a bug. - // Therefore we detect whether the symbol is loaded in addition to checking for - // extensions. - NativeDisplay::X11(display) if has_dp_extension("EGL_KHR_platform_x11") && - egl.GetPlatformDisplay.is_loaded() => - { - let d = display.unwrap_or(ffi::egl::DEFAULT_DISPLAY as *const _); - // TODO: `PLATFORM_X11_SCREEN_KHR` - unsafe { egl.GetPlatformDisplay(ffi::egl::PLATFORM_X11_KHR, d as *mut _, - ptr::null()) } - }, - - NativeDisplay::X11(display) if has_dp_extension("EGL_EXT_platform_x11") && - egl.GetPlatformDisplayEXT.is_loaded() => - { - let d = display.unwrap_or(ffi::egl::DEFAULT_DISPLAY as *const _); - // TODO: `PLATFORM_X11_SCREEN_EXT` - unsafe { egl.GetPlatformDisplayEXT(ffi::egl::PLATFORM_X11_EXT, d as *mut _, - ptr::null()) } - }, - - NativeDisplay::Gbm(display) if has_dp_extension("EGL_KHR_platform_gbm") && - egl.GetPlatformDisplay.is_loaded() => - { - let d = display.unwrap_or(ffi::egl::DEFAULT_DISPLAY as *const _); - unsafe { egl.GetPlatformDisplay(ffi::egl::PLATFORM_GBM_KHR, d as *mut _, - ptr::null()) } - }, - - NativeDisplay::Gbm(display) if has_dp_extension("EGL_MESA_platform_gbm") && - egl.GetPlatformDisplayEXT.is_loaded() => - { - let d = display.unwrap_or(ffi::egl::DEFAULT_DISPLAY as *const _); - unsafe { egl.GetPlatformDisplayEXT(ffi::egl::PLATFORM_GBM_KHR, d as *mut _, - ptr::null()) } - }, - - NativeDisplay::Wayland(display) if has_dp_extension("EGL_KHR_platform_wayland") && - egl.GetPlatformDisplay.is_loaded() => - { - let d = display.unwrap_or(ffi::egl::DEFAULT_DISPLAY as *const _); - unsafe { egl.GetPlatformDisplay(ffi::egl::PLATFORM_WAYLAND_KHR, d as *mut _, - ptr::null()) } - }, - - NativeDisplay::Wayland(display) if has_dp_extension("EGL_EXT_platform_wayland") && - egl.GetPlatformDisplayEXT.is_loaded() => - { - let d = display.unwrap_or(ffi::egl::DEFAULT_DISPLAY as *const _); - unsafe { egl.GetPlatformDisplayEXT(ffi::egl::PLATFORM_WAYLAND_EXT, d as *mut _, - ptr::null()) } - }, - - NativeDisplay::Android if has_dp_extension("EGL_KHR_platform_android") && - egl.GetPlatformDisplay.is_loaded() => - { - unsafe { egl.GetPlatformDisplay(ffi::egl::PLATFORM_ANDROID_KHR, - ffi::egl::DEFAULT_DISPLAY as *mut _, ptr::null()) } - }, - - NativeDisplay::Device(display) if has_dp_extension("EGL_EXT_platform_device") && - egl.GetPlatformDisplay.is_loaded() => - { - unsafe { egl.GetPlatformDisplay(ffi::egl::PLATFORM_DEVICE_EXT, display as *mut _, - ptr::null()) } - }, - - NativeDisplay::X11(Some(display)) | NativeDisplay::Gbm(Some(display)) | - NativeDisplay::Wayland(Some(display)) | NativeDisplay::Device(display) | - NativeDisplay::Other(Some(display)) => { - unsafe { egl.GetDisplay(display as *mut _) } - } - - NativeDisplay::X11(None) | NativeDisplay::Gbm(None) | NativeDisplay::Wayland(None) | - NativeDisplay::Android | NativeDisplay::Other(None) => { - unsafe { egl.GetDisplay(ffi::egl::DEFAULT_DISPLAY as *mut _) } - }, - }; + let display = get_native_display(&egl, native_display); if display.is_null() { return Err(CreationError::OsError("Could not create EGL display object".to_string())); |