From f59ba947cbbd878c79eef69473d0e3d3dfe02272 Mon Sep 17 00:00:00 2001
From: bkaradzic <branimirkaradzic@gmail.com>
Date: Fri, 12 Jul 2013 22:27:46 -0700
Subject: [PATCH] iOS WIP.

---
 makefile             |  1 +
 premake/bgfx.lua     |  2 +-
 premake/premake4.lua |  7 +++++++
 src/glcontext_ios.h  | 38 ++++++++++++++++++++++++++++++++++++++
 src/renderer_gl.cpp  | 10 ++++++++++
 src/renderer_gl.h    |  2 ++
 6 files changed, 59 insertions(+), 1 deletion(-)
 create mode 100755 src/glcontext_ios.h

diff --git a/makefile b/makefile
index 0629419e0..6b4f97cbb 100755
--- a/makefile
+++ b/makefile
@@ -13,6 +13,7 @@ all:
 	premake4 --file=premake/premake4.lua --gcc=mingw gmake
 	premake4 --file=premake/premake4.lua --gcc=linux gmake
 	premake4 --file=premake/premake4.lua --gcc=osx gmake
+	premake4 --file=premake/premake4.lua --gcc=ios gmake
 	premake4 --file=premake/premake4.lua --gcc=qnx-arm gmake
 	premake4 --file=premake/premake4.lua xcode4
 	make -s --no-print-directory -C src
diff --git a/premake/bgfx.lua b/premake/bgfx.lua
index 8e718ca19..e495396bd 100644
--- a/premake/bgfx.lua
+++ b/premake/bgfx.lua
@@ -35,7 +35,7 @@ project "bgfx"
 			BGFX_DIR .. "src/**.mm",
 		}
 
-	configuration { "vs* or linux or mingw or osx" }
+	configuration { "vs* or linux or mingw or osx or ios" }
 		includedirs {
 			--nacl has GLES2 headers modified...
 			BGFX_DIR .. "3rdparty/glext",
diff --git a/premake/premake4.lua b/premake/premake4.lua
index f778da9df..7a455b910 100644
--- a/premake/premake4.lua
+++ b/premake/premake4.lua
@@ -102,6 +102,13 @@ function exampleProject(_name, _uuid)
 			"OpenGL.framework",
 		}
 
+	configuration { "ios" }
+		linkoptions {
+			"-framework CoreFoundation",
+			"-framework Foundation",
+			"-framework OpenGLES",
+		}
+
 	configuration { "qnx*" }
 		targetextension ""
 		links {
diff --git a/src/glcontext_ios.h b/src/glcontext_ios.h
new file mode 100755
index 000000000..eba25bd11
--- /dev/null
+++ b/src/glcontext_ios.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2011-2013 Branimir Karadzic. All rights reserved.
+ * License: http://www.opensource.org/licenses/BSD-2-Clause
+ */
+
+#ifndef __GLCONTEXT_NSGL_H__
+#define __GLCONTEXT_NSGL_H__
+
+#if BX_PLATFORM_IOS
+
+namespace bgfx
+{
+	struct GlContext
+	{
+		GlContext()
+			: m_context(0)
+		{
+		}
+        
+		void create(uint32_t _width, uint32_t _height);
+		void destroy();
+		void resize(uint32_t _width, uint32_t _height, bool _vsync);
+		void swap();
+		void import();
+        
+		bool isValid() const
+		{
+			return 0 != m_context;
+		}
+        
+		void* m_view;
+		void* m_context;
+	};
+} // namespace bgfx
+
+#endif // BX_PLATFORM_IOS
+
+#endif // __GLCONTEXT_NSGL_H__
diff --git a/src/renderer_gl.cpp b/src/renderer_gl.cpp
index d67558b30..47d9a5e95 100644
--- a/src/renderer_gl.cpp
+++ b/src/renderer_gl.cpp
@@ -159,6 +159,16 @@ namespace bgfx
 	}
 #endif // BGFX_CONFIG_DEBUG_GREMEDY
 
+#if BX_PLATFORM_IOS
+	PFNGLBINDVERTEXARRAYOESPROC         glBindVertexArrayOES    = NULL;
+	PFNGLDELETEVERTEXARRAYSOESPROC      glDeleteVertexArraysOES = NULL;
+	PFNGLGENVERTEXARRAYSOESPROC         glGenVertexArraysOES    = NULL;
+	PFNGLPROGRAMBINARYOESPROC           glProgramBinaryOES      = NULL;
+	PFNGLGETPROGRAMBINARYOESPROC        glGetProgramBinaryOES   = NULL;
+	PFLGLDRAWARRAYSINSTANCEDANGLEPROC   glDrawArraysInstanced   = NULL;
+	PFLGLDRAWELEMENTSINSTANCEDANGLEPROC glDrawElementsInstanced = NULL;
+#endif // BX_PLATFORM_IOS
+
 	typedef void (*PostSwapBuffersFn)(uint32_t _width, uint32_t _height);
 
 	static void rgbaToBgra(uint8_t* _data, uint32_t _width, uint32_t _height) 
diff --git a/src/renderer_gl.h b/src/renderer_gl.h
index cf6325518..522e600f8 100755
--- a/src/renderer_gl.h
+++ b/src/renderer_gl.h
@@ -211,6 +211,8 @@ typedef void (*PFNGLGETTRANSLATEDSHADERSOURCEANGLEPROC)(GLuint shader, GLsizei b
 #	include "glcontext_glx.h"
 #elif BX_PLATFORM_OSX
 #	include "glcontext_nsgl.h"
+#elif BX_PLATFORM_IOS
+#	include "glcontext_ios.h"
 #endif // BX_PLATFORM_
 
 #if BGFX_CONFIG_DEBUG_GREMEDY && (BX_PLATFORM_WINDOWS || BX_PLATFORM_LINUX)