render/gles2: add wlr_gles2_renderer_check_ext

include/render/gles2.h

@@ -44,6 +44,7 @@ struct wlr_gles2_renderer {
 
 	struct wlr_egl *egl;
 
+	const char *exts_str;
 	struct {
 		bool read_format_bgra_ext;
 		bool debug_khr;

include/wlr/render/gles2.h

@@ -18,6 +18,8 @@ struct wlr_egl;
 struct wlr_renderer *wlr_gles2_renderer_create(struct wlr_egl *egl);
 
 struct wlr_egl *wlr_gles2_renderer_get_egl(struct wlr_renderer *renderer);
+bool wlr_gles2_renderer_check_ext(struct wlr_renderer *renderer,
+	const char *ext);
 
 struct wlr_texture *wlr_gles2_texture_from_pixels(struct wlr_egl *egl,
 	enum wl_shm_format wl_fmt, uint32_t stride, uint32_t width, uint32_t height,

render/gles2/renderer.c

@@ -575,6 +575,8 @@ struct wlr_renderer *wlr_gles2_renderer_create(struct wlr_egl *egl) {
 		return NULL;
 	}
 
+	renderer->exts_str = exts_str;
+
 	wlr_log(WLR_INFO, "Using %s", glGetString(GL_VERSION));
 	wlr_log(WLR_INFO, "GL vendor: %s", glGetString(GL_VENDOR));
 	wlr_log(WLR_INFO, "GL renderer: %s", glGetString(GL_RENDERER));
@@ -687,3 +689,9 @@ error:
 	free(renderer);
 	return NULL;
 }
+
+bool wlr_gles2_renderer_check_ext(struct wlr_renderer *wlr_renderer,
+		const char *ext) {
+	struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
+	return check_gl_ext(renderer->exts_str, ext);
+}