--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/E01_hello_triangle.nim	Tue Jan 24 10:22:38 2023 +0700
@@ -0,0 +1,55 @@
+import std/times
+import std/strutils
+import std/enumerate
+
+import semicongine
+
+type
+  # define type of vertex
+  VertexDataA = object
+    position: PositionAttribute[Vec2]
+    color: ColorAttribute[Vec3]
+
+var pipeline: RenderPipeline[VertexDataA, void]
+
+proc globalUpdate(engine: var Engine, dt: float32) =
+  discard
+
+# vertex data (types must match the above VertexAttributes)
+const
+  triangle_pos = @[
+    Vec2([0.0'f32, -0.5'f32]),
+    Vec2([0.5'f32, 0.5'f32]),
+    Vec2([-0.5'f32, 0.5'f32]),
+  ]
+  triangle_color = @[
+    Vec3([1.0'f32, 0.0'f32, 0.0'f32]),
+    Vec3([0.0'f32, 1.0'f32, 0.0'f32]),
+    Vec3([0.0'f32, 0.0'f32, 1.0'f32]),
+  ]
+
+when isMainModule:
+  var myengine = igniteEngine("Hello triangle")
+
+  # build a mesh
+  var trianglemesh = new Mesh[VertexDataA]
+  trianglemesh.vertexData = VertexDataA(
+    position: PositionAttribute[Vec2](data: triangle_pos),
+    color: ColorAttribute[Vec3](data: triangle_color),
+  )
+  # build a single-object scene graph
+  var triangle = newThing("triangle", trianglemesh)
+
+  # upload data, prepare shaders, etc
+  const vertexShader = generateVertexShaderCode[VertexDataA, void]()
+  const fragmentShader = generateFragmentShaderCode[VertexDataA]()
+  pipeline = setupPipeline[VertexDataA, void, void](
+    myengine,
+    triangle,
+    vertexShader,
+    fragmentShader
+  )
+  # show something
+  myengine.run(pipeline, globalUpdate)
+  pipeline.trash()
+  myengine.trash()