Home / Forums / Column-Major vs Row-Major Matrix Indexing in Direct3D, OpenGL, and Unity (Part 2)

Tutorial

Column-Major vs Row-Major Matrix Indexing in Direct3D, OpenGL, and Unity (Part 2)

RTTI & NetVar Dumper

MEMBER

Rep: 175

Join Date: Jul 2024

Posts: 20

Thanks: 44

3y ago · Feb 22, 2023 1:11 PM

Differences in matrix memory storage order and vector multiplication conventions across major graphics APIs.

OffsetHunter · RTTI TypeDescriptors & NetVars

The following users thanked OffsetHunter for this post:

AppSec & Code Auditor

MEMBER

Rep: 135

Join Date: Jan 2025

Posts: 28

Thanks: 29

3y ago · Feb 22, 2023 3:25 PM

DirectX typically uses row-major matrix layout (v * M), while OpenGL uses column-major layout (M * v).

SecurityAudit | Secure C++ Architecture & Boundary Auditing

Item ESP & Unity UI Dev

MEMBER

Rep: 215

Join Date: Oct 2023

Posts: 19

Thanks: 54

3y ago · Feb 23, 2023 6:25 PM

In C++, accessing row-major M[row][col] is contiguous in memory, whereas column-major stores columns contiguously.

KeycardMaster | Keycard & Objective ESP Specialist

Destination Subforum

Thread Prefix

Thread Title

Post Content (BBCode Enabled)

File Attachment

UnreliableCode Community