Huge changes for 3d

engine/src/shaders/model_render_system.vert

@@ -1,9 +1,10 @@
 #version 450
 
-layout (location = 0) in vec2 position;
-layout (location = 1) in vec3 color;
+// Per vertex; locations match Mesh::getAttributeDescriptions().
+layout (location = 0) in vec3 position;
+layout (location = 3) in vec4 color;
 
-layout (location = 0) out vec3 fragColor;
+layout (location = 0) out vec4 fragColor;
 
 layout (push_constant) uniform Push {
   mat4 transform;
@@ -11,6 +12,6 @@ layout (push_constant) uniform Push {
 } push;
 
 void main() {
-  gl_Position = vec4(push.transform * vec4(position, 0.0, 1.0));
+  gl_Position = push.transform * vec4(position, 1.0);
   fragColor = color;
 }