Tidy up

docs/lectures/graphics/06_rendering_pipeline.md

@@ -10,17 +10,22 @@ The four rendering stages:
 ![1647365644.png](img/1647365644.png)
 
 - **Application stage** is the software that runs on the CPU
-  - ![1647366052.png](img/1647366052.png)
+
+    ![1647366052.png](img/1647366052.png)
+
 - **Vertex processing stage** is responsible for processing operations on individual vertices
-  - In this stage vertex positions are transformed from model space to world and then view space, and projected to clip coordinates
-  - Vertex **post processing**:
-    1. Primitive Assembly
-    2. Clipping
-       - ![1647366278.png](img/1647366278.png)
-    3. Perspective divide
-    4. View-port transformation
+    - In this stage vertex positions are transformed from model space to world and then view space, and projected to clip coordinates
+    - Vertex **post-processing**:
+        1. Primitive Assembly
+        2. Clipping
+
+            ![1647366278.png](img/1647366278.png)
+
+        3. Perspective divide
+        4. Viewport transformation
+
 - **Rasterisation stage** is responsible for calculating all of the pixels inside the triangles that are being rendered
 - **Pixel processing stage** is responsible for processing operations on individual fragments.
-  - Texturing can also happen in the fragment shader
-  - Fragment shader computes a colour which is then merged with the colour buffer
-  - Merging calculates which fragments are hidden behind other fragments and only keeps the colour for the visible fragment
+    - Texturing can also happen in the fragment shader
+    - Fragment shader computes a colour which is then merged with the colour buffer
+    - Merging calculates which fragments are hidden behind other fragments and only keeps the colour for the visible fragment