Uniform buffers.

shaders/shader.vert

@@ -1,11 +1,19 @@
 #version 450
 
-layout(location = 0) in vec2 inPosition;
+layout(binding = 0) uniform Uniforms {
+    mat4 scene_from_model;
+    mat4 projection_from_scene;
+} uniforms;
+
+layout(location = 0) in vec3 inPosition;
 layout(location = 1) in vec3 inColor;
 
 layout(location = 0) out vec3 fragColor;
 
 void main() {
-    gl_Position = vec4(inPosition, 0.0, 1.0);
+    gl_Position =
+        uniforms.projection_from_scene *
+        uniforms.scene_from_model *
+        vec4(inPosition, 1.0);
     fragColor = inColor;
 }