From d678a1ce05e2bc1675420b9dd7fc81939ab9113d Mon Sep 17 00:00:00 2001
From: Logan <logan.zartman@utexas.edu>
Date: Sun, 27 Oct 2024 22:43:37 -0700
Subject: [PATCH] tweaks

---
 src/Renderer.tsx     | 12 ++++++------
 src/projectModule.ts |  4 ++--
 src/splatModule.ts   |  4 +++-
 3 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/src/Renderer.tsx b/src/Renderer.tsx
index 467d06e..ce2d600 100644
--- a/src/Renderer.tsx
+++ b/src/Renderer.tsx
@@ -9,7 +9,7 @@ import { ReadWritePrevTex } from "./ReadWritePrevTex";
 import { projectModuleCode } from "./projectModule";
 import { splatModuleCode } from "./splatModule";
 
-const N = 1024;
+const N = 512;
 const workgroupDim = 8;
 
 export function Renderer({
@@ -770,8 +770,8 @@ export function Renderer({
           dt,
           x: pointer.x,
           y: pointer.y,
-          vx: (pointer.x - pointer.px) * 0.1,
-          vy: (pointer.y - pointer.py) * 0.1,
+          vx: (pointer.x - pointer.px) * 0.2,
+          vy: (pointer.y - pointer.py) * 0.2,
           radius: N / 50,
           amount: 1,
         });
@@ -794,7 +794,7 @@ export function Renderer({
         project({
           encoder,
           dt,
-          iters: 50,
+          iters: 30,
           pressureTarget: pressure1Rwp,
         });
 
@@ -811,7 +811,7 @@ export function Renderer({
         project({
           encoder,
           dt,
-          iters: 50,
+          iters: 30,
           pressureTarget: pressure2Rwp,
         });
       }
@@ -869,11 +869,11 @@ export function Renderer({
       linearSampler,
       splat,
       velocityRwp,
+      diffuse,
       project,
       pressure1Rwp,
       advect,
       pressure2Rwp,
-      diffuse,
     ])
   );
 
diff --git a/src/projectModule.ts b/src/projectModule.ts
index c336ee7..9dc7416 100644
--- a/src/projectModule.ts
+++ b/src/projectModule.ts
@@ -43,7 +43,7 @@ export function projectModuleCode({
       let pressure = textureLoad(presReadTex, id.xy, 0).r;
       
       textureStore(divWriteTex, id.xy, vec4f(divergence, 0, 0, 0));
-      textureStore(presWriteTex, id.xy, vec4f(pressure * 0.98, 0, 0, 0));
+      textureStore(presWriteTex, id.xy, vec4f(pressure * 0.99, 0, 0, 0));
       // textureStore(presWriteTex, id.xy, vec4f(0));
       
       // TODO: boundary
@@ -71,7 +71,7 @@ export function projectModuleCode({
         textureLoad(presReadTex, vec2i(x, y + 1), 0)
       ) / 4.0;
       
-      textureStore(presWriteTex, id.xy, pressure);
+      textureStore(presWriteTex, id.xy, pressure * 0.99);
       
       // TODO: boundary
     }
diff --git a/src/splatModule.ts b/src/splatModule.ts
index 832f4ce..c919455 100644
--- a/src/splatModule.ts
+++ b/src/splatModule.ts
@@ -41,7 +41,9 @@ export function splatModuleCode({
         // let f = 1.0;
         
         density += f * uniforms.amount;
-        velocity += f * uniforms.velocity;
+        if (length(f * uniforms.velocity) > length(velocity)) {
+          velocity = f * uniforms.velocity;
+        }
       }
       
       density *= 0.99;