fix DH water rendering over the player. fix DH shadowmap SSS blending. make floodfill work when SSGI/RTAO are enabled.. add player shadow toggle.

shaders/lib/diffuse_lighting.glsl

@@ -69,15 +69,44 @@ vec3 DoAmbientLightColor(
     return IndirectLight + TorchLight * TorchBrightness_autoAdjust;
 }
 
+
+// this is dumb, and i plan to remove it eventually...
 vec4 RT_AmbientLight(
-    vec3 TorchColor, 
-    vec2 Lightmap
+    vec3 playerPos,
+    vec3 lpvPos,
+    float Exposure,
+    vec2 Lightmap,
+    vec3 TorchColor
 ){
     float skyLM = (pow(Lightmap.y,15.0)*2.0 + pow(Lightmap.y,2.5))*0.5;
 
-    float TorchLM = 10.0 - ( 1.0 / (pow(exp(-0.5*inversesqrt(Lightmap.x)),5.0)+0.1));
-    TorchLM = pow(TorchLM/4,10) + pow(Lightmap.x,1.5)*0.5;
-    vec3 TorchLight = TorchColor * TORCH_AMOUNT * TorchLM;
+
+    // do torch lighting
+    float TorchLM = pow(1.0-sqrt(1.0-clamp(Lightmap.x,0.0,1.0)),2.0) * 2.0;
+    float TorchBrightness_autoAdjust = mix(1.0, 30.0,  clamp(exp(-10.0*Exposure),0.0,1.0)) ;
+    vec3 TorchLight = TorchColor * TorchLM * TORCH_AMOUNT  ;
+    
+    #if defined IS_LPV_ENABLED && defined MC_GL_EXT_shader_image_load_store
+        vec4 lpvSample = SampleLpvLinear(lpvPos);
+        vec3 LpvTorchLight = GetLpvBlockLight(lpvSample);
+
+        // i gotchu
+        float fadeLength = 10.0; // in blocks
+        vec3 cubicRadius = clamp( min(((LpvSize3-1.0) - lpvPos)/fadeLength,      lpvPos/fadeLength) ,0.0,1.0);
+        float LpvFadeF = cubicRadius.x*cubicRadius.y*cubicRadius.z;
+
+        LpvFadeF = 1.0 - pow(1.0-pow(LpvFadeF,1.5),3.0); // make it nice and soft :)
+        
+        TorchLight = mix(TorchLight,LpvTorchLight/5.0,   LpvFadeF);
+
+        const vec3 normal = vec3(0.0); // TODO
+
+        if (heldItemId > 0)
+            TorchLight += GetHandLight(heldItemId, playerPos, normal);
+
+        if (heldItemId2 > 0)
+            TorchLight += GetHandLight(heldItemId2, playerPos, normal);
+    #endif
 
     return vec4(TorchLight, skyLM);
 }