From 61d6b49d5a4c5f58a2922a19a360e078a0aeacba Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Tue, 10 Mar 2026 01:33:39 +0000
Subject: Switch to floating point, camera relative position buffer

---
 gfx/gl/shaders/billboard.vert | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'gfx/gl/shaders/billboard.vert')

diff --git a/gfx/gl/shaders/billboard.vert b/gfx/gl/shaders/billboard.vert
index 2d73084..faf8b19 100644
--- a/gfx/gl/shaders/billboard.vert
+++ b/gfx/gl/shaders/billboard.vert
@@ -8,16 +8,16 @@ uniform float size;
 layout(location = 0) in ivec3 modelPos;
 layout(location = 1) in float yaw;
 
-flat out ivec3 ModelPos;
+flat out vec3 ModelPos;
 flat out float Yaw;
 flat out float Depth;
 
 void
 main()
 {
-	ModelPos = modelPos;
+	ModelPos = modelPos - viewPoint;
 	Yaw = yaw;
-	gl_Position = viewProjection * vec4(modelPos - viewPoint + centre, 1);
+	gl_Position = viewProjection * vec4(ModelPos + centre, 1);
 	Depth = gl_Position.w;
 	gl_PointSize = (viewPort.w * size * 2) / gl_Position.w;
 }
-- 
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