From 10c03e1a9d09ba0369ea3fbff1ec3a9436a3b706 Mon Sep 17 00:00:00 2001
From: proller <proller@github.com>
Date: Sat, 2 Mar 2013 20:44:08 +0400
Subject: [PATCH] build with ogles2 driver

---
 cmake/Modules/FindOpenGLES2.cmake | 130 ++++++++++++++++++++++++++++++
 src/CMakeLists.txt                |   2 +
 src/main.cpp                      |   8 ++
 3 files changed, 140 insertions(+)
 create mode 100644 cmake/Modules/FindOpenGLES2.cmake

diff --git a/cmake/Modules/FindOpenGLES2.cmake b/cmake/Modules/FindOpenGLES2.cmake
new file mode 100644
index 00000000..42d31c89
--- /dev/null
+++ b/cmake/Modules/FindOpenGLES2.cmake
@@ -0,0 +1,130 @@
+#-------------------------------------------------------------------
+# This file is stolen from part of the CMake build system for OGRE (Object-oriented Graphics Rendering Engine) http://www.ogre3d.org/
+#
+# The contents of this file are placed in the public domain. Feel
+# free to make use of it in any way you like.
+#-------------------------------------------------------------------
+
+# - Try to find OpenGLES and EGL
+# Once done this will define
+#
+#  OPENGLES2_FOUND        - system has OpenGLES
+#  OPENGLES2_INCLUDE_DIR  - the GL include directory
+#  OPENGLES2_LIBRARIES    - Link these to use OpenGLES
+#
+#  EGL_FOUND        - system has EGL
+#  EGL_INCLUDE_DIR  - the EGL include directory
+#  EGL_LIBRARIES    - Link these to use EGL
+
+# win32, apple, android NOT TESED
+# linux tested and works
+
+IF (WIN32)
+  IF (CYGWIN)
+
+    FIND_PATH(OPENGLES2_INCLUDE_DIR GLES2/gl2.h )
+
+    FIND_LIBRARY(OPENGLES2_gl_LIBRARY libGLESv2 )
+
+  ELSE (CYGWIN)
+
+    IF(BORLAND)
+      SET (OPENGLES2_gl_LIBRARY import32 CACHE STRING "OpenGL ES 2.x library for win32")
+    ELSE(BORLAND)
+      # todo
+      # SET (OPENGLES_gl_LIBRARY ${SOURCE_DIR}/Dependencies/lib/release/libGLESv2.lib CACHE STRING "OpenGL ES 2.x library for win32"
+    ENDIF(BORLAND)
+
+  ENDIF (CYGWIN)
+
+ELSE (WIN32)
+
+  IF (APPLE)
+
+	create_search_paths(/Developer/Platforms)
+	findpkg_framework(OpenGLES2)
+    set(OPENGLES2_gl_LIBRARY "-framework OpenGLES")
+
+  ELSE(APPLE)
+
+    FIND_PATH(OPENGLES2_INCLUDE_DIR GLES2/gl2.h
+      /usr/openwin/share/include
+      /opt/graphics/OpenGL/include /usr/X11R6/include
+      /usr/include
+    )
+
+    FIND_LIBRARY(OPENGLES2_gl_LIBRARY
+      NAMES GLESv2
+      PATHS /opt/graphics/OpenGL/lib
+            /usr/openwin/lib
+            /usr/shlib /usr/X11R6/lib
+            /usr/lib
+    )
+
+    IF (NOT BUILD_ANDROID)
+		FIND_PATH(EGL_INCLUDE_DIR EGL/egl.h
+		  /usr/openwin/share/include
+		  /opt/graphics/OpenGL/include /usr/X11R6/include
+		  /usr/include
+		)
+
+		FIND_LIBRARY(EGL_egl_LIBRARY
+		  NAMES EGL
+		  PATHS /opt/graphics/OpenGL/lib
+				/usr/openwin/lib
+				/usr/shlib /usr/X11R6/lib
+				/usr/lib
+		)
+
+		# On Unix OpenGL most certainly always requires X11.
+		# Feel free to tighten up these conditions if you don't 
+		# think this is always true.
+		# It's not true on OSX.
+
+		IF (OPENGLES2_gl_LIBRARY)
+		  IF(NOT X11_FOUND)
+			INCLUDE(FindX11)
+		  ENDIF(NOT X11_FOUND)
+		  IF (X11_FOUND)
+			IF (NOT APPLE)
+			  SET (OPENGLES2_LIBRARIES ${X11_LIBRARIES})
+			ENDIF (NOT APPLE)
+		  ENDIF (X11_FOUND)
+		ENDIF (OPENGLES2_gl_LIBRARY)
+    ENDIF ()
+
+  ENDIF(APPLE)
+ENDIF (WIN32)
+
+#SET( OPENGLES2_LIBRARIES ${OPENGLES2_gl_LIBRARY} ${OPENGLES2_LIBRARIES})
+
+IF (BUILD_ANDROID)
+  IF(OPENGLES2_gl_LIBRARY)
+      SET( OPENGLES2_LIBRARIES ${OPENGLES2_gl_LIBRARY} ${OPENGLES2_LIBRARIES})
+      SET( EGL_LIBRARIES)
+      SET( OPENGLES2_FOUND "YES" )
+  ENDIF(OPENGLES2_gl_LIBRARY)
+ELSE ()
+
+  SET( OPENGLES2_LIBRARIES ${OPENGLES2_gl_LIBRARY} ${OPENGLES2_LIBRARIES})
+
+  IF(OPENGLES2_gl_LIBRARY AND EGL_egl_LIBRARY)
+    SET( OPENGLES2_LIBRARIES ${OPENGLES2_gl_LIBRARY} ${OPENGLES2_LIBRARIES})
+    SET( EGL_LIBRARIES ${EGL_egl_LIBRARY} ${EGL_LIBRARIES})
+    SET( OPENGLES2_FOUND "YES" )
+  ENDIF(OPENGLES2_gl_LIBRARY AND EGL_egl_LIBRARY)
+
+ENDIF ()
+
+MARK_AS_ADVANCED(
+  OPENGLES2_INCLUDE_DIR
+  OPENGLES2_gl_LIBRARY
+  EGL_INCLUDE_DIR
+  EGL_egl_LIBRARY
+)
+
+IF(OPENGLES2_FOUND)
+    MESSAGE(STATUS "Found system opengles2 library ${OPENGLES2_LIBRARIES}")
+ELSE ()
+    SET(OPENGLES2_LIBRARIES "")
+ENDIF ()
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 0f8396c0..d91248cb 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -172,6 +172,7 @@ endif()
 find_package(Jthread REQUIRED)
 find_package(Sqlite3 REQUIRED)
 find_package(Json REQUIRED)
+find_package(OpenGLES2)
 
 if(USE_FREETYPE)
 	find_package(Freetype REQUIRED)
@@ -386,6 +387,7 @@ if(BUILD_CLIENT)
 		${SQLITE3_LIBRARY}
 		${LUA_LIBRARY}
 		${JSON_LIBRARY}
+		${OPENGLES2_LIBRARIES}
 		${PLATFORM_LIBS}
 		${CLIENT_PLATFORM_LIBS}
 	)
diff --git a/src/main.cpp b/src/main.cpp
index 73be969a..e5aa3017 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1350,6 +1350,14 @@ int main(int argc, char *argv[])
 		driverType = video::EDT_DIRECT3D9;
 	else if(driverstring == "opengl")
 		driverType = video::EDT_OPENGL;
+#ifdef _IRR_COMPILE_WITH_OGLES1_
+	else if(driverstring == "ogles1")
+		driverType = video::EDT_OGLES1;
+#endif
+#ifdef _IRR_COMPILE_WITH_OGLES2_
+	else if(driverstring == "ogles2")
+		driverType = video::EDT_OGLES2;
+#endif
 	else
 	{
 		errorstream<<"WARNING: Invalid video_driver specified; defaulting "