Revert "Change multisampling count to 0, improved fix/workaround for AMD GPUs (#26)"

NUM_SAMPLES=0 or 1 breaks AMD Radeon R9 M295X on Windows 11, but 2 works.

This reverts commit 748911a91b.

src/render/mod.rs

@@ -43,7 +43,7 @@ use std::sync::mpsc;
 const ATLAS_SIZE: usize = 1024;
 
 // TEMP
-const NUM_SAMPLES: i32 = 0;
+const NUM_SAMPLES: i32 = 2;
 
 pub struct Camera {
     pub pos: cgmath::Point3<f64>,

src/render/shaders/trans_frag.glsl

@@ -15,7 +15,6 @@ void main() {
     for (int i = 1; i < samples; i++) {
         col += texelFetch(tcolor, C, i);
     }
-    if (samples != 0)
     col /= float(samples);
 
     float r = accum.a;