From 7c97adabbea2bd5f9fe66bdfda01cf699830f69f Mon Sep 17 00:00:00 2001
From: nothke <nothke@gmail.com>
Date: Wed, 12 Jun 2024 01:26:06 +0200
Subject: [PATCH] Colorful circle

---
 src/main.zig | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/main.zig b/src/main.zig
index 20e9807..fde474b 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -25,7 +25,7 @@ export fn init() void {
     std.log.info("Vertex buffers len: {}", .{state.bind.vertex_buffers.len});
 
     const vertexCount = 8;
-    const radius: f32 = 0.4;
+    const radius: f32 = 0.7;
 
     const cX: f32 = 0;
     const cY: f32 = 0;
@@ -36,6 +36,9 @@ export fn init() void {
 
     const angleDiff: f32 = 1 / @as(f32, @floatFromInt(vertexCount));
 
+    var pcg = std.Random.Pcg.init(123);
+    const rand = pcg.random();
+
     for (0..vertexCount) |i| {
         const pi: f32 = @floatCast(std.math.pi);
         const angle: f32 = @as(f32, @floatFromInt(i)) * angleDiff * pi * 2;
@@ -47,6 +50,11 @@ export fn init() void {
         triangleVerts[si + 0] = x;
         triangleVerts[si + 1] = y;
         triangleVerts[si + 2] = 0.5;
+
+        triangleVerts[si + 3] = rand.float(f32);
+        triangleVerts[si + 4] = rand.float(f32);
+        triangleVerts[si + 5] = rand.float(f32);
+        triangleVerts[si + 6] = 1;
     }
 
     // var triangleVerts = [_]f32{