Merge pull request #1082 from ids1024/angle

egl: Support ANGLE EGL platform on winit Wayland

Author: Drakulix

src/backend/egl/ffi.rs

@@ -356,4 +356,9 @@ pub mod egl {
     // Accepted in the <attribute> parameter of eglQueryWaylandBufferWL:
     pub const EGL_TEXTURE_FORMAT: i32 = 0x3080;
     pub const WAYLAND_Y_INVERTED_WL: i32 = 0x31DB;
+
+    pub const PLATFORM_ANGLE_ANGLE: u32 = 0x3202;
+    pub const PLATFORM_ANGLE_TYPE_ANGLE: i32 = 0x3203;
+    pub const PLATFORM_ANGLE_NATIVE_PLATFORM_TYPE_ANGLE: i32 = 0x348F;
+    pub const PLATFORM_ANGLE_TYPE_VULKAN_ANGLE: i32 = 0x3450;
 }

src/backend/egl/native.rs

@@ -171,13 +171,43 @@ impl EGLNativeDisplay for Arc<WinitWindow> {
                 egl_platform!(PLATFORM_WAYLAND_KHR, display, &["EGL_KHR_platform_wayland"]),
                 // see: https://www.khronos.org/registry/EGL/extensions/EXT/EGL_EXT_platform_wayland.txt
                 egl_platform!(PLATFORM_WAYLAND_EXT, display, &["EGL_EXT_platform_wayland"]),
+                // see: https://raw.githubusercontent.com/google/angle/main/extensions/EGL_ANGLE_platform_angle.txt
+                egl_platform!(
+                    PLATFORM_ANGLE_ANGLE,
+                    display,
+                    &[
+                        "EGL_ANGLE_platform_angle",
+                        "EGL_ANGLE_platform_angle_vulkan",
+                        "EGL_EXT_platform_wayland",
+                    ],
+                    vec![
+                        ffi::egl::PLATFORM_ANGLE_NATIVE_PLATFORM_TYPE_ANGLE,
+                        ffi::egl::PLATFORM_WAYLAND_EXT as _,
+                        ffi::egl::PLATFORM_ANGLE_TYPE_ANGLE,
+                        ffi::egl::PLATFORM_ANGLE_TYPE_VULKAN_ANGLE,
+                        ffi::egl::NONE as ffi::EGLint
+                    ]
+                ),
             ]
         } else if let Some(display) = self.xlib_display() {
             vec![
                 // see: https://www.khronos.org/registry/EGL/extensions/KHR/EGL_KHR_platform_x11.txt
                 egl_platform!(PLATFORM_X11_KHR, display, &["EGL_KHR_platform_x11"]),
                 // see: https://www.khronos.org/registry/EGL/extensions/EXT/EGL_EXT_platform_x11.txt
                 egl_platform!(PLATFORM_X11_EXT, display, &["EGL_EXT_platform_x11"]),
+                // see: https://raw.githubusercontent.com/google/angle/main/extensions/EGL_ANGLE_platform_angle.txt
+                egl_platform!(
+                    PLATFORM_ANGLE_ANGLE,
+                    display,
+                    &["EGL_ANGLE_platform_angle", "EGL_ANGLE_platform_angle_vulkan"],
+                    vec![
+                        ffi::egl::PLATFORM_ANGLE_NATIVE_PLATFORM_TYPE_ANGLE,
+                        ffi::egl::PLATFORM_X11_EXT as _,
+                        ffi::egl::PLATFORM_ANGLE_TYPE_ANGLE,
+                        ffi::egl::PLATFORM_ANGLE_TYPE_VULKAN_ANGLE,
+                        ffi::egl::NONE as ffi::EGLint
+                    ]
+                ),
             ]
         } else {
             unreachable!("No backends for winit other then Wayland and X11 are supported")