improve handheld light in third person, and on hands in firstperson

shaders/dimensions/composite1.fsh

@@ -1255,9 +1255,11 @@ void main() {
 
 		#if HANDHELD_LIGHTSOURCE_MODE > 0
 			// float flashlightshadows = SSRT_FlashLight_Shadows(shiftedViewPos, isDHrange, normalize(shiftedPlayerPos), interleaved_gradientNoise_temporal());
-			
+			vec3 handheldViewPos = viewPos;
+			if(hand) handheldViewPos.z += 0.7;
+
 			Indirect_lighting += doHandHeldLight(
-				viewPos, slopednormal
+				handheldViewPos, slopednormal
         		#if defined HANDHELD_LIGHTSOURCE_SPECULAR && defined DEFERRED_SPECULAR
 					,mainHandPos, mainHandCol, offHandPos, offHandCol
 				#endif

shaders/lib/diffuse_lighting.glsl

@@ -140,6 +140,9 @@ void calculateFinishedPointLight(
     inout vec3 handPos, inout vec3 lighting
 ){
     if(lightLevel > 1e-6){
+
+        viewPos.z -= max((mat3(gbufferModelView) * playerLookVector).z,0);
+
         // offset viewPos to match hand position
         handPos = mat3(gbufferModelViewInverse) * (viewPos + handOffset) + gbufferModelViewInverse[3].xyz;