use platform display

required if mutiple platforms are available, otherwise egl may call into
x11 and crash even if gbm is desired. tested on rk3588

Author: wang-bin

AUTHORS

@@ -20,3 +20,4 @@ Anton Sakhon <kofhein@gmail.com>
 Bari Rao <bari.rao@gmail.com>
 Frede Emil Hoey Braendstrup <frederikbraendstrup@gmail.com>
 Dominique Martinet <dominique.martinet@atmark-techno.com>
+Wang Bin <wbsecg1@gmail.com>

src/flutter/shell/platform/linux_embedded/surface/environment_egl.h

@@ -6,6 +6,7 @@
 #define FLUTTER_SHELL_PLATFORM_LINUX_EMBEDDED_SURFACE_ENVIRONMENT_EGL_H_
 
 #include <EGL/egl.h>
+#include <EGL/eglext.h>
 
 #include "flutter/shell/platform/linux_embedded/logger.h"
 #include "flutter/shell/platform/linux_embedded/surface/egl_utils.h"
@@ -14,10 +15,16 @@ namespace flutter {
 
 class EnvironmentEgl {
  public:
-  EnvironmentEgl(EGLNativeDisplayType platform_display,
+  EnvironmentEgl(EGLenum platform, EGLNativeDisplayType platform_display,
                  bool sub_environment = false)
       : display_(EGL_NO_DISPLAY), sub_environment_(sub_environment) {
-    display_ = eglGetDisplay(platform_display);
+    InitPlatformFuns();
+    if (platform && eglGetPlatformDisplay_) {
+        display_ = eglGetPlatformDisplay_(platform, platform_display, nullptr);
+    }
+    if (display_ == EGL_NO_DISPLAY) {
+        display_ = eglGetDisplay(platform_display);
+    }
     if (display_ == EGL_NO_DISPLAY) {
       ELINUX_LOG(ERROR) << "Failed to get the EGL display: "
                         << get_egl_error_cause();
@@ -66,7 +73,16 @@ class EnvironmentEgl {
 
   EGLDisplay Display() const { return display_; }
 
+ private:
+  void InitPlatformFuns() {
+    static const char* client_exts = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
+    if (client_exts && has_egl_extension(client_exts, "EGL_EXT_platform_base")) {
+        eglGetPlatformDisplay_ = reinterpret_cast<PFNEGLGETPLATFORMDISPLAYEXTPROC>(eglGetProcAddress("eglGetPlatformDisplayEXT"));
+    }
+  }
+
  protected:
+  PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplay_ = nullptr;
   EGLDisplay display_;
   bool valid_ = false;
   bool sub_environment_;

src/flutter/shell/platform/linux_embedded/window/elinux_window_wayland.cc

@@ -1443,7 +1443,7 @@ bool ELinuxWindowWayland::CreateRenderSurface(int32_t width_px,
   wl_surface_commit(native_window_->Surface());
 
   render_surface_ = std::make_unique<SurfaceGl>(std::make_unique<ContextEgl>(
-      std::make_unique<EnvironmentEgl>(wl_display_), enable_impeller));
+      std::make_unique<EnvironmentEgl>(EGL_PLATFORM_WAYLAND_KHR, wl_display_), enable_impeller));
   render_surface_->SetNativeWindow(native_window_.get());
 
   if (view_properties_.use_window_decoration) {

src/flutter/shell/platform/linux_embedded/window/elinux_window_x11.cc

@@ -125,7 +125,7 @@ bool ELinuxWindowX11::CreateRenderSurface(int32_t width,
                                           int32_t height,
                                           bool enable_impeller) {
   auto context_egl = std::make_unique<ContextEgl>(
-      std::make_unique<EnvironmentEgl>(display_), enable_impeller);
+      std::make_unique<EnvironmentEgl>(EGL_PLATFORM_X11_KHR, display_), enable_impeller);
 
   if (current_rotation_ == 90 || current_rotation_ == 270) {
     std::swap(width, height);

src/flutter/shell/platform/linux_embedded/window/native_window_drm_gbm.cc

@@ -134,7 +134,7 @@ bool NativeWindowDrmGbm::DismissCursor() {
 std::unique_ptr<SurfaceGl> NativeWindowDrmGbm::CreateRenderSurface(
     bool enable_impeller) {
   return std::make_unique<SurfaceGl>(std::make_unique<ContextEgl>(
-      std::make_unique<EnvironmentEgl>(gbm_device_), enable_impeller));
+      std::make_unique<EnvironmentEgl>(EGL_PLATFORM_GBM_KHR, gbm_device_), enable_impeller));
 }
 
 bool NativeWindowDrmGbm::IsNeedRecreateSurfaceAfterResize() const {

src/flutter/shell/platform/linux_embedded/window/renderer/window_decorations_wayland.cc

@@ -35,7 +35,7 @@ WindowDecorationsWayland::WindowDecorationsWayland(
           compositor, subcompositor, root_surface, width_dip * pixel_ratio,
           kTitleBarHeightDIP * pixel_ratio, enable_vsync),
       std::make_unique<SurfaceDecoration>(std::make_unique<ContextEgl>(
-          std::make_unique<EnvironmentEgl>(display, sub_egl_display),
+          std::make_unique<EnvironmentEgl>(EGL_PLATFORM_WAYLAND_KHR, display, sub_egl_display),
           enable_impeller)));
   titlebar_->SetPosition(0, -kTitleBarHeightDIP);
 
@@ -48,7 +48,7 @@ WindowDecorationsWayland::WindowDecorationsWayland(
           kButtonWidthDIP * pixel_ratio, kButtonHeightDIP * pixel_ratio,
           enable_vsync),
       std::make_unique<SurfaceDecoration>(std::make_unique<ContextEgl>(
-          std::make_unique<EnvironmentEgl>(display, sub_egl_display),
+          std::make_unique<EnvironmentEgl>(EGL_PLATFORM_WAYLAND_KHR, display, sub_egl_display),
           enable_impeller))));
   buttons_[type]->SetPosition(
       width_dip * pixel_ratio - kButtonWidthDIP - kButtonMarginDIP,
@@ -63,7 +63,7 @@ WindowDecorationsWayland::WindowDecorationsWayland(
           kButtonWidthDIP * pixel_ratio, kButtonHeightDIP * pixel_ratio,
           enable_vsync),
       std::make_unique<SurfaceDecoration>(std::make_unique<ContextEgl>(
-          std::make_unique<EnvironmentEgl>(display, sub_egl_display),
+          std::make_unique<EnvironmentEgl>(EGL_PLATFORM_WAYLAND_KHR, display, sub_egl_display),
           enable_impeller))));
   buttons_[type]->SetPosition(
       width_dip * pixel_ratio - kButtonWidthDIP * 2 - kButtonMarginDIP * 2,
@@ -78,7 +78,7 @@ WindowDecorationsWayland::WindowDecorationsWayland(
           kButtonWidthDIP * pixel_ratio, kButtonHeightDIP * pixel_ratio,
           enable_vsync),
       std::make_unique<SurfaceDecoration>(std::make_unique<ContextEgl>(
-          std::make_unique<EnvironmentEgl>(display, sub_egl_display),
+          std::make_unique<EnvironmentEgl>(EGL_PLATFORM_WAYLAND_KHR, display, sub_egl_display),
           enable_impeller))));
   buttons_[type]->SetPosition(
       width_dip * pixel_ratio - kButtonWidthDIP * 3 - kButtonMarginDIP * 3,