Bad shaders should not crash the engine, just not work

git-svn-id: http://svn.net-core.org/repos/t-engine4@913 51575b47-30f0-44d4-a5cc-537603b46e54

@@ -175,6 +175,7 @@ newTalent{
 		return ([[Touch your foe and turn it into stone for %d turns.
 		Stoned creatures are unable to act or regen life and are very brittle.
 		If a stoned creature if hit by an attack that deals more than 30%% of its life it will shatter and be destroyed.
+		Stoned creatures are highly resistant to fire and lightning and somewhat resistant to physical attacks.
 		At level 3 it will become a beam.]]):format(math.floor((3 + self:getTalentLevel(t)) / 1.5))
 	end,
 }

@@ -130,10 +130,16 @@ newEffect{
 	on_lose = function(self, err) return "#Target# is not stoned anymore.", "-Stoned" end,
 	activate = function(self, eff)
 		eff.tmpid = self:addTemporaryValue("stoned", 1)
+		eff.resistsid = self:addTemporaryValue("resists", {
+			[DamageType.PHYSICAL]=20,
+			[DamageType.FIRE]=80,
+			[DamageType.LIGHTNING]=50,
+		})
 		eff.dur = self:updateEffectDuration(eff.dur, "stun")
 	end,
 	deactivate = function(self, eff)
 		self:removeTemporaryValue("stoned", eff.tmpid)
+		self:removeTemporaryValue("resists", eff.resistsid)
 	end,
 }
 

@@ -118,16 +118,16 @@ bool _CheckGLSLProgramValid(GLuint program)
 
 #define CHECKGLSLCOMPILE( Shader, file )						\
 	if(!_CheckGLSLShaderCompile( Shader , file))				\
-	exit(-1);
+	return(0);
 
 #define CHECKGLSLLINK( Program )								\
 	if(!_CheckGLSLProgramLink( Program ))						\
-	exit(-1);
+	return(0);
 
 #define CHECKGLSLVALID( Program )								\
 	glValidateProgramARB( Program );								\
 	if(!_CheckGLSLProgramValid( Program ))						\
-	exit(-1);
+	return(0);