From e6af97f4028e9e14f96a829fdcac7f2fd6083f50 Mon Sep 17 00:00:00 2001
From: Jared Miller <jared@smell.flowers>
Date: Wed, 11 Mar 2026 13:50:10 -0400
Subject: [PATCH] Update ant compute shader for material IDs

---
 src/shaders/antsCompute.frag | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/shaders/antsCompute.frag b/src/shaders/antsCompute.frag
index df21707..4e8c9c4 100644
--- a/src/shaders/antsCompute.frag
+++ b/src/shaders/antsCompute.frag
@@ -32,21 +32,21 @@ vec2 roundUvToCellCenter(vec2 uv) {
 }
 
 bool tryGetFood(vec2 pos) {
-    float value = texture(tWorld, roundUvToCellCenter(pos)).x;
+    float materialId = texture(tWorld, roundUvToCellCenter(pos)).x;
 
-    return (int(value) & 1) == 1;
+    return int(materialId) == MAT_FOOD;
 }
 
 bool tryDropFood(vec2 pos) {
-    float value = texture(tWorld, roundUvToCellCenter(pos)).x;
+    float materialId = texture(tWorld, roundUvToCellCenter(pos)).x;
 
-    return ((int(value) & 2) >> 1) == 1;
+    return int(materialId) == MAT_HOME;
 }
 
 bool isObstacle(vec2 pos) {
-    float value = texture(tWorld, roundUvToCellCenter(pos)).x;
+    float materialId = texture(tWorld, roundUvToCellCenter(pos)).x;
 
-    return ((int(value) & 4) >> 2) == 1;
+    return int(materialId) == MAT_ROCK;
 }
 
 float smell(vec2 pos, float isCarrying) {