GLM stuff

src/flat.vert

@@ -1,11 +1,13 @@
 #version 330
 
-in vec2 position;
+in vec3 position;
 in vec3 color;
 
+uniform mat4 MVP;
+
 out vec3 DIFFUSE;
 
 void main() {
-  gl_Position = vec4(position, 0.0, 1.0);
+  gl_Position = MVP * vec4(position, 1.0);
   DIFFUSE = color;
 }

src/main.rs

@@ -1,9 +1,10 @@
 #[macro_use]
 extern crate glium;
+extern crate nalgebra_glm as glm;
 
 #[derive(Copy, Clone)]
 struct Vertex {
-    position: [f32; 2],
+    position: [f32; 3],
     color: [f32; 3],
 }
 
@@ -19,9 +20,9 @@ fn main() {
 
     let display = glium::Display::new(wb, cb, &events_loop).unwrap();
 
-    let vertex1 = Vertex { position: [-0.5, -0.5], color: [1.0, 0.0, 0.0] };
-    let vertex2 = Vertex { position: [ 0.0,  0.5], color: [0.0, 1.0, 0.0] };
-    let vertex3 = Vertex { position: [ 0.5, -0.25], color: [0.0, 0.0, 1.0]};
+    let vertex1 = Vertex { position: [-0.5, -0.5, 0.0], color: [1.0, 0.0, 0.0] };
+    let vertex2 = Vertex { position: [ 0.0,  0.5, 0.0], color: [0.0, 1.0, 0.0] };
+    let vertex3 = Vertex { position: [ 0.5, -0.25, 0.0], color: [0.0, 0.0, 1.0]};
     let shape = vec![vertex1, vertex2, vertex3];
 
     let vertex_buffer = glium::VertexBuffer::new(&display, &shape).unwrap();
@@ -31,11 +32,21 @@ fn main() {
     let fragment_shader_src = include_str!("flat.frag");
     let program = glium::Program::from_source(&display, vertex_shader_src, fragment_shader_src, None).unwrap();
 
+    let mut frames = 0;
+
     events_loop.run(move |ev, _, control_flow| {
 
+        frames += 1;
+
+        let mvp = glm::perspective::<f32>(1.0, 45.0_f32.to_radians(), 0.2, 100.0);
+        let mvp = glm::translate::<f32>(&mvp, &glm::vec3(0.0, 0.0, -10.0 + frames as f32 * 0.01));
+        let uniforms = uniform! {
+            MVP: *mvp.as_ref(),
+        };
+
         let mut target = display.draw();
         target.clear_color(0.0, 0.0, 0.0, 1.0);
-        target.draw(&vertex_buffer, &indices, &program, &glium::uniforms::EmptyUniforms,
+        target.draw(&vertex_buffer, &indices, &program, &uniforms,
                     &Default::default()).unwrap();
         target.finish().unwrap();