Started moving to a samples structure

samples/basic_triangle/shaders/basic_triangle.vert

@@ -0,0 +1,15 @@
+#version 450
+#pragma shader_stage(vertex)
+
+// in layout(location=0) vec2 position;
+
+layout(set=0, binding=0) uniform data {
+  vec4 positions[3];
+} vertexData;
+
+void main() {
+    // gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
+    // gl_Position = vec4(position, 0.0, 1.0);
+    // gl_Position = vec4(inputData.positions[gl_VertexIndex], 0.0, 1.0);
+    gl_Position = vertexData.positions[gl_VertexIndex];
+}