From 0a423f850df76496be9e8f2be3e39cb9e0223afe Mon Sep 17 00:00:00 2001
From: Zack Buhman <zack@buhman.org>
Date: Sat, 21 Feb 2026 22:59:17 +0000
Subject: [PATCH] initial

---
 main.lua | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 main.lua

diff --git a/main.lua b/main.lua
new file mode 100644
index 0000000..b02a717
--- /dev/null
+++ b/main.lua
@@ -0,0 +1,70 @@
+local mesh
+
+local pixelcode = [[
+    #pragma language glsl3
+
+    varying vec4 vpos;
+
+    out vec4 outData;
+
+    void pixelmain()
+    {
+      outData = vpos;
+    }
+]]
+
+local vertexcode = [[
+    #pragma language glsl3
+
+    layout(location = 0) in vec4 VertexPosition;
+
+    varying vec4 vpos;
+
+    void vertexmain()
+    {
+        vpos = VertexPosition;
+        love_Position = TransformProjectionMatrix * VertexPosition;
+    }
+]]
+
+shader = love.graphics.newShader(pixelcode, vertexcode)
+
+local vertexformat = {
+    { name = 'VertexPosition', format = 'floatvec3', location = 0 },   
+}
+
+local vertexdata = {
+    {-0.5, -0.5, -0.5}, -- tl \|
+    { 0.5, -0.5, -0.5}, -- tr
+    { 0.5,  0.5, -0.5}, -- br
+    { -0.5, 0.5, -0.5}, -- bl |\
+}
+
+function love.load(args)
+   local vertexbuffer = love.graphics.newBuffer(vertexformat, vertexdata, { vertex = true, usage = "static" })
+   
+   attributelist = {
+      {
+	 buffer = vertexbuffer,
+	 location = 0,
+	 name = "VertexPosition", -- the name this vertex attribute will use in a shader
+	 nameinbuffer = nil, -- the name of the attribute in the vertex buffer. Defaults to the name field.
+	 step = "pervertex", -- vertex attribute step ("pervertex" or "perinstance"), defaults to "pervertex".
+	 startindex = 1, -- 1-based array index within the given vertex buffer where the attribute data will start being pulled from during rendering. Defaults to 1.
+      },
+   }
+   drawmode = "triangles"
+   
+   mesh = love.graphics.newMesh(attributelist, drawmode)
+
+   mesh:setVertexMap(1, 2, 3,
+		     1, 4, 3)
+end
+
+function love.draw()   
+   local radius = 100   
+   local mx, my = love.mouse.getPosition()
+
+   love.graphics.setShader(shader)   
+   love.graphics.draw(mesh, mx, my, 0, radius, radius)   
+end