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-rw-r--r--src/api/android/mod.rs2
-rw-r--r--src/api/egl/mod.rs208
2 files changed, 112 insertions, 98 deletions
diff --git a/src/api/android/mod.rs b/src/api/android/mod.rs
index 1b52cc0..0f770c2 100644
--- a/src/api/android/mod.rs
+++ b/src/api/android/mod.rs
@@ -257,7 +257,7 @@ impl HeadlessContext {
pub fn new(builder: BuilderAttribs) -> Result<HeadlessContext, CreationError> {
let context = try!(EglContext::new(egl::ffi::egl::Egl, &builder, egl::NativeDisplay::Android));
let context = try!(context.finish_pbuffer());
- Ok(context)
+ Ok(HeadlessContext(context))
}
}
diff --git a/src/api/egl/mod.rs b/src/api/egl/mod.rs
index 015396e..32902e5 100644
--- a/src/api/egl/mod.rs
+++ b/src/api/egl/mod.rs
@@ -41,6 +41,116 @@ 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 +165,8 @@ 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()));