Hello there,

Firstly, thank you for creating this guide. It's very hard to find information on D3D9 that's digestible by beginners.

I'm having difficulty with getting my vertex shader to transform my vertices. No matter what operation I perform, the vertex shader doesn't appear to be effected.

float4vs_main(float4 position :POSITION) :POSITION{float4 output =float4(position.x *2, position.y *2,0.5f,1.0f);return output;}

I've read on FVF definitions, andProcessVertices but I'm not sure how they should be used, if at all in this use case. Also, since I'm using Silk.NET (C# libraries providing bindings for graphics development), the definitions of FVFs aren't available.