From 41a2c292dd3c3158f56ed3a4b9526f89ae4c8a5a Mon Sep 17 00:00:00 2001
From: Joshua Granick <jgranick@users.noreply.github.com>
Date: Thu, 30 Apr 2015 10:43:09 -0700
Subject: [PATCH] Prepare for ANGLE support

---
 project/Build.xml                              |  2 +-
 project/src/backend/sdl/SDLWindow.cpp          |  9 +++++++++
 project/src/graphics/opengl/OpenGL.h           |  1 +
 project/src/graphics/opengl/OpenGLExtensions.h | 13 ++++++++++++-
 4 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/project/Build.xml b/project/Build.xml
index 01a5864c5..f37c2bb3e 100644
--- a/project/Build.xml
+++ b/project/Build.xml
@@ -30,7 +30,6 @@
 	
 	<files id="lime">
 		
-		<compilerflag value="-DLIME_SDL" if="LIME_SDL" />
 		<compilerflag value="-Iinclude" />
 		
 		<file name="src/ExternalInterface.cpp" />
@@ -141,6 +140,7 @@
 			</section>
 			
 			<compilerflag value="-DLIME_SDL" />
+			<compilerflag value="-DNATIVE_TOOLKIT_SDL_ANGLE" if="LIME_SDL_ANGLE" />
 			<compilerflag value="-D__IPHONEOS__" if="ios" />
 			
 			<file name="src/backend/sdl/SDLApplication.cpp" />
diff --git a/project/src/backend/sdl/SDLWindow.cpp b/project/src/backend/sdl/SDLWindow.cpp
index 81baefb13..068d6d47c 100644
--- a/project/src/backend/sdl/SDLWindow.cpp
+++ b/project/src/backend/sdl/SDLWindow.cpp
@@ -22,6 +22,15 @@ namespace lime {
 		if (flags & WINDOW_FLAG_RESIZABLE) sdlFlags |= SDL_WINDOW_RESIZABLE;
 		if (flags & WINDOW_FLAG_BORDERLESS) sdlFlags |= SDL_WINDOW_BORDERLESS;
 		
+		#if defined (HX_WINDOWS) && defined (NATIVE_TOOLKIT_SDL_ANGLE)
+		
+		SDL_GL_SetAttribute (SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
+		SDL_GL_SetAttribute (SDL_GL_CONTEXT_MAJOR_VERSION, 2);
+		SDL_GL_SetAttribute (SDL_GL_CONTEXT_MINOR_VERSION, 0);
+		SDL_SetHint (SDL_HINT_VIDEO_WIN_D3DCOMPILER, "d3dcompiler_47.dll");
+		
+		#endif
+		
 		if (flags & WINDOW_FLAG_DEPTH_BUFFER) {
 			
 			SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 32 - (flags & WINDOW_FLAG_STENCIL_BUFFER) ? 8 : 0);
diff --git a/project/src/graphics/opengl/OpenGL.h b/project/src/graphics/opengl/OpenGL.h
index 95a830f95..cbc5c1395 100644
--- a/project/src/graphics/opengl/OpenGL.h
+++ b/project/src/graphics/opengl/OpenGL.h
@@ -60,6 +60,7 @@
 #include <gl/GL.h>
 typedef ptrdiff_t GLsizeiptrARB;
 #define NEED_EXTENSIONS
+#define DYNAMIC_OGL
 #include <SDL_opengl.h>
 #include <SDL_opengl_glext.h>
 
diff --git a/project/src/graphics/opengl/OpenGLExtensions.h b/project/src/graphics/opengl/OpenGLExtensions.h
index 7f78a5d24..3dbb07a75 100644
--- a/project/src/graphics/opengl/OpenGLExtensions.h
+++ b/project/src/graphics/opengl/OpenGLExtensions.h
@@ -12,6 +12,10 @@
 
 #include "OpenGLBindings.h"
 
+#ifdef LIME_SDL
+#include <SDL.h>
+#endif
+
 
 #ifdef DECLARE_EXTENSION
 
@@ -27,7 +31,14 @@
 
 #elif defined(GET_EXTENSION)
 
-#ifdef HX_WINDOWS
+#ifdef LIME_SDL
+   #define OGL_EXT(func,ret,args) \
+   {\
+      *(void **)&lime::func = (void *)SDL_GL_GetProcAddress(#func);\
+      if (!func) \
+         *(void **)&lime::func = (void *)SDL_GL_GetProcAddress(#func "ARB");\
+   }
+#elif HX_WINDOWS
    #define OGL_EXT(func,ret,args) \
    {\
       *(void **)&lime::func = (void *)wglGetProcAddress(#func);\