Tested against Mesa master@8c78fdb with `ninja check-func` on Linux.
---
src/waffle/egl/wegl_display.c | 22 ++++++++++++++++++----
src/waffle/egl/wegl_platform.c | 35 +++++++++++++++++++++++++++++++++--
src/waffle/egl/wegl_platform.h | 8 ++++++++
3 files changed, 59 insertions(+), 6 deletions(-)
diff --git a/src/waffle/egl/wegl_display.c b/src/waffle/egl/wegl_display.c
index 7a7986c..c924f2a 100644
--- a/src/waffle/egl/wegl_display.c
+++ b/src/waffle/egl/wegl_display.c
@@ -104,10 +104,24 @@ wegl_display_init(struct wegl_display *dpy,
if (!ok)
goto fail;
- dpy->egl = plat->eglGetDisplay((EGLNativeDisplayType) native_display);
- if (!dpy->egl) {
- wegl_emit_error(plat, "eglGetDisplay");
- goto fail;
+ if (wegl_platform_can_use_eglGetPlatformDisplay(plat)) {
+ void *fixed_native_dpy = native_display;
+ if (plat->egl_platform == EGL_PLATFORM_X11_KHR)
+ fixed_native_dpy = &native_display;
+
+ dpy->egl = plat->eglGetPlatformDisplay(plat->egl_platform,
+ fixed_native_dpy,
+ NULL);
+ if (!dpy->egl) {
+ wegl_emit_error(plat, "eglGetPlatformDisplay");
+ goto fail;
+ }
+ } else {
+ dpy->egl = plat->eglGetDisplay((EGLNativeDisplayType) native_display);
+ if (!dpy->egl) {
+ wegl_emit_error(plat, "eglGetDisplay");
+ goto fail;
+ }
}
ok = plat->eglInitialize(dpy->egl, &dpy->major_version,
&dpy->minor_version);
diff --git a/src/waffle/egl/wegl_platform.c b/src/waffle/egl/wegl_platform.c
index 669fe38..71eb29e 100644
--- a/src/waffle/egl/wegl_platform.c
+++ b/src/waffle/egl/wegl_platform.c
@@ -65,7 +65,8 @@ wegl_platform_teardown(struct wegl_platform *self)
bool ok = true;
int error = 0;
- unsetenv("EGL_PLATFORM");
+ if (!wegl_platform_can_use_eglGetPlatformDisplay(self))
+ unsetenv("EGL_PLATFORM");
if (self->eglHandle) {
error = dlclose(self->eglHandle);
@@ -149,10 +150,40 @@ wegl_platform_init(struct wegl_platform *self, EGLenum
egl_platform)
self->client_extensions =
self->eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
- setup_env(self);
+ if (!wegl_platform_can_use_eglGetPlatformDisplay(self))
+ setup_env(self);
error:
// On failure the caller of wegl_platform_init will trigger it's own
// destruction which will execute wegl_platform_teardown.
return ok;
}
+
+bool
+wegl_platform_can_use_eglGetPlatformDisplay(const struct wegl_platform *plat)
+{
+ const char *ext;
+
+ if (!plat->eglGetPlatformDisplay)
+ return false;
+
+ switch (plat->egl_platform) {
+ case EGL_PLATFORM_ANDROID_KHR:
+ ext = "EGL_KHR_platform_android";
+ break;
+ case EGL_PLATFORM_GBM_KHR:
+ ext = "EGL_KHR_platform_gbm";
+ break;
+ case EGL_PLATFORM_WAYLAND_KHR:
+ ext = "EGL_KHR_platform_wayland";
+ break;
+ case EGL_PLATFORM_X11_KHR:
+ ext = "EGL_KHR_platform_x11";
+ break;
+ default:
+ assert(!"bad egl_platform enum");
+ return false;
+ }
+
+ return waffle_is_extension_in_string(plat->client_extensions, ext);
+}
diff --git a/src/waffle/egl/wegl_platform.h b/src/waffle/egl/wegl_platform.h
index 4573ec2..d6788eb 100644
--- a/src/waffle/egl/wegl_platform.h
+++ b/src/waffle/egl/wegl_platform.h
@@ -103,3 +103,11 @@ wegl_platform_teardown(struct wegl_platform *self);
bool
wegl_platform_init(struct wegl_platform *self, EGLenum egl_platform);
+
+
+// Can eglGetPlatformDisplay can be used for this platform?
+//
+// True if libEGL exposes the eglGetPlatformDisplay function; and if EGL
+// supports the needed platform extension.
+bool
+wegl_platform_can_use_eglGetPlatformDisplay(const struct wegl_platform *plat);
--
2.10.0
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