1 files changed, 83 insertions, 0 deletions
diff --git a/include/mbgl/platform/gl.hpp b/include/mbgl/platform/gl.hpp
new file mode 100644
index 0000000000..a29b230dbf
--- /dev/null
+++ b/include/mbgl/platform/gl.hpp
@@ -0,0 +1,83 @@
+#ifndef MBGL_RENDERER_GL
+#define MBGL_RENDERER_GL
+
+#include <string>
+
+#ifdef NVIDIA
+    #include <GLES2/gl2.h>
+    #include <GLES2/gl2ext.h>
+
+    extern PFNGLDISCARDFRAMEBUFFEREXTPROC glDiscardFramebufferEXT;
+
+    #define GL_DEPTH24_STENCIL8 GL_DEPTH24_STENCIL8_OES
+#elif __APPLE__
+    #include "TargetConditionals.h"
+    #if TARGET_OS_IPHONE
+        #include <OpenGLES/ES2/gl.h>
+        #include <OpenGLES/ES2/glext.h>
+        #define glGenVertexArrays glGenVertexArraysOES
+        #define glBindVertexArray glBindVertexArrayOES
+        #define glDeleteVertexArrays glDeleteVertexArraysOES
+        #define GL_ARB_vertex_array_object 1
+        #define GL_DEPTH24_STENCIL8 GL_DEPTH24_STENCIL8_OES
+    #elif TARGET_IPHONE_SIMULATOR
+        #include <OpenGLES/ES2/gl.h>
+        #include <OpenGLES/ES2/glext.h>
+    #elif TARGET_OS_MAC
+        #include <OpenGL/OpenGL.h>
+        #include <OpenGL/gl.h>
+        #define glGenVertexArrays glGenVertexArraysAPPLE
+        #define glBindVertexArray glBindVertexArrayAPPLE
+        #define glDeleteVertexArrays glDeleteVertexArraysAPPLE
+    #else
+        #error Unsupported Apple platform
+    #endif
+#else
+    #define GL_GLEXT_PROTOTYPES
+    #include <GL/gl.h>
+    #include <GL/glu.h>
+    #include <GL/glext.h>
+#endif
+
+namespace mbgl {
+namespace gl {
+// Debug group markers, useful for debuggin on iOS
+#if defined(__APPLE__) && defined(DEBUG) && defined(GL_EXT_debug_marker)
+// static int indent = 0;
+inline void start_group(const std::string &str) {
+    glPushGroupMarkerEXT(0, str.c_str());
+    // fprintf(stderr, "%s%s\n", std::string(indent * 4, ' ').c_str(), str.c_str());
+    // indent++;
+}
+
+inline void end_group() {
+    glPopGroupMarkerEXT();
+    // indent--;
+}
+#else
+inline void start_group(const std::string &) {}
+inline void end_group() {}
+#endif
+
+
+struct group {
+    inline group(const std::string &str) { start_group(str); }
+    ~group() { end_group(); };
+};
+}
+}
+
+#ifdef GL_ES_VERSION_2_0
+    #define glClearDepth glClearDepthf
+    #define glDepthRange glDepthRangef
+#endif
+
+void _CHECK_GL_ERROR(const char *cmd, const char *file, int line);
+
+#define _CHECK_ERROR(cmd, file, line) \
+    cmd; \
+    do { _CHECK_GL_ERROR(#cmd, file, line); } while (false);
+
+#define CHECK_ERROR(cmd) _CHECK_ERROR(cmd, __FILE__, __LINE__)
+
+#endif