[core] split headless_view.cpp into implementation-specific files

also adds a EAGL implementation for iOS

1 files changed, 17 insertions, 2 deletions

diff --git a/include/mbgl/platform/default/headless_view.hpp b/include/mbgl/platform/default/headless_view.hpp
index 8347aa51fe..edaa08d01d 100644
--- a/include/mbgl/platform/default/headless_view.hpp
+++ b/include/mbgl/platform/default/headless_view.hpp
@@ -2,7 +2,12 @@
 #define MBGL_COMMON_HEADLESS_VIEW
 
 #ifdef __APPLE__
+#include <TargetConditionals.h>
+#if TARGET_OS_IOS
+#define MBGL_USE_EAGL 1
+#else
 #define MBGL_USE_CGL 1
+#endif
 #else
 #define GL_GLEXT_PROTOTYPES
 #define MBGL_USE_GLX 1
@@ -45,11 +50,17 @@ public:
     void resize(uint16_t width, uint16_t height);
 
 private:
-    void createContext();
     void loadExtensions();
-    void clearBuffers();
     bool isActive() const;
 
+    // Implementation specific functions
+    static gl::glProc initializeExtension(const char*);
+    void createContext();
+    void destroyContext();
+    void clearBuffers();
+    void activateContext();
+    void deactivateContext();
+
 private:
     std::shared_ptr<HeadlessDisplay> display;
     const float pixelRatio;
@@ -60,6 +71,10 @@ private:
     CGLContextObj glContext = nullptr;
 #endif
 
+#if MBGL_USE_EAGL
+    void *glContext = nullptr;
+#endif
+
 #if MBGL_USE_GLX
     Display *xDisplay = nullptr;
     GLXFBConfig *fbConfigs = nullptr;