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docs/lectures/graphics/06_rendering_pipeline.md

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+# The Rendering Pipeline
+
+The four rendering stages:
+
+1. Vertex Specification
+2. Vertex processing
+3. Rasterisation
+4. Fragment shader
+
+![1647365644.png](img/1647365644.png)
+
+- **Application stage** is the software that runs on the CPU
+  - ![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
+- **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