added cmake build files

libobs-opengl/CMakeLists.txt

@@ -0,0 +1,54 @@
+if(WIN32)
+	set(libobs_opengl_platform_src
+		gl-windows.c)
+elseif(APPLE AND UNIX)
+	set(libobs_opengl_platform_objc_src gl-cocoa.m)
+	set_source_files_properties(${libobs_opengl_platform_objc_src}
+		PROPERTIES LANGUAGE C)
+	set(libobs_opengl_platform_src ${libobs_opengl_platform_objc_src})
+	find_library(COCOA Cocoa)
+	include_directories(${COCOA})
+	link_libraries(${COCOA})
+else()
+endif()
+
+option(USE_STATIC_GLEW "Build using bundled GLEW" ${WIN32})
+
+include_directories(${obs_SOURCE_DIR}/libobs)
+
+find_package(OpenGL REQUIRED)
+include_directories(${OPENGL_INCLUDE_DIRS})
+
+add_definitions(-DGLEW_NO_GLU)
+
+if(NOT USE_STATIC_GLEW)
+	find_package(GLEW REQUIRED)
+	include_directories(${GLEW_INCLUDE_DIRS})
+	set(GLEW_SRC)
+else()
+	include_directories(glew/include)
+	add_definitions(-DGLEW_STATIC)
+	set(GLEW_SRC glew/src/glew.c)
+endif()
+
+add_library(libobs-opengl MODULE
+	gl-helpers.c
+	gl-indexbuffer.c
+	gl-shader.c
+	gl-shaderparser.c
+	gl-stagesurf.c
+	gl-subsystem.c
+	gl-texture2d.c
+	gl-texturecube.c
+	gl-vertexbuffer.c
+	gl-zstencil.c
+	${libobs_opengl_platform_src}
+	${GLEW_SRC})
+
+set_target_properties(libobs-opengl
+	PROPERTIES OUTPUT_NAME obs-opengl)
+
+target_link_libraries(libobs-opengl
+	libobs
+	${OPENGL_LIBRARIES}
+	${GLEW_LIBRARIES})