If CG isn't available, still compile and fallback on GLSL

CMakeLists.txt

@@ -372,6 +372,12 @@ else()
 
 	check_lib(CG Cg Cg/cg.h)
 	check_lib(CGGL CgGL Cg/cgGL.h)
+	if(NOT CG_FOUND)
+		message("CG not found, Building without")
+		add_definitions(-DHAVE_CG=0)
+	else()
+		add_definitions(-DHAVE_CG=1)
+	endif()
 endif()
 
 if(NOT ${CMAKE_SYSTEM_NAME} MATCHES "Darwin")

Source/Plugins/Plugin_VideoOGL/CMakeLists.txt

@@ -23,7 +23,7 @@ if(wxWidgets_FOUND)
 	set(LIBS	${LIBS} ${wxWidgets_LIBRARIES})
 endif(wxWidgets_FOUND)
 
-if(APPLE OR WIN32 OR ${CMAKE_SYSTEM_NAME} MATCHES "Linux")
+if(HAVE_CG AND (APPLE OR WIN32 OR ${CMAKE_SYSTEM_NAME} MATCHES "Linux"))
 	set(LIBS	${LIBS} Cg CgGL)
 endif()
 

Source/Plugins/Plugin_VideoOGL/Src/GLUtil.h

@@ -113,10 +113,9 @@ bool OpenGL_ReportFBOError(const char *function, const char *file, int line);
 #define GL_REPORT_PROGRAM_ERROR() (void)0
 #endif
 
-#if defined __APPLE__ || defined __linux__ || defined _WIN32
+#if HAVE_CG && (defined __APPLE__ || defined __linux__ || defined _WIN32)
 #include <Cg/cg.h>
 #include <Cg/cgGL.h>
-#define HAVE_CG 1
 extern CGcontext g_cgcontext;
 extern CGprofile g_cgvProf, g_cgfProf;
 #endif

Source/Plugins/Plugin_VideoOGL/Src/Render.cpp

@@ -435,6 +435,11 @@ Renderer::Renderer()
 			cgGLSetOptimalOptions(g_cgfProf);
 		}
 	}
+#else
+	// If we don't have Nvidia CG, we HAVE to use GLSL
+	g_Config.bUseGLSL = true;
+	
+	UpdateActiveConfig();
 #endif	// HAVE_CG
 
 	int nenvvertparams, nenvfragparams, naddrregisters[2];