Reversing The Construction Of The Perspective-Projection Matrix (Game Engine Reversing)

Ever wondered how the projection matrix is calculated per frame in a game engine? No? Good. Because we’re going to do it anyway…
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Parts

• Part 1: Introduction
• Part 2: What is the Projection Matrix?
• Part 3: Methods to Find The Projection Matrix
• Part 4: Finding and Tracing Projection Construction
• Part 5.1: Reversing Construction of the Projection Matrix (X & Y Scales)
• Part 5.2: Reversing Construction of the Projection Matrix (Depth Mapping)
• Part 6: Reversing Construction of the Inverse Projection Matrix