From: http://clootie.narod.ru/delphi/download_custom.html

ParticleSystem1 - unidirectional generator sample



Main idea of this sample was to demonstrate right and wrong ways of generating uniform distribution of unit length vectors - so end-points formed by these vectors forms sphere surface. But in process of providing visual feedback for user some other interesting techniques appeared.

I try to list them below (in advanced - beginner order):

Vertex shader assembler code for particle systems with particle size calculation.

Stencil buffer / matrix operations for mirror rendering.

Various frame buffer blending modes.

Rendering graphs with with transformed and lit vertices.

Usage of DrawPrimitiveUP D3DDevice method (for graph rendering). -From: http://clootie.narod.ru/delphi/download_custom.html

ParticleSystem1 - unidirectional generator sample



Main idea of this sample was to demonstrate right and wrong ways of generating uniform distribution of unit length vectors - so end-points formed by these vectors forms sphere surface. But in process of providing visual feedback for user some other interesting techniques appeared.

I try to list them below (in advanced - beginner order):

Vertex shader assembler code for particle systems with particle size calculation.

Stencil buffer / matrix operations for mirror rendering.

Various frame buffer blending modes.

Rendering graphs with with transformed and lit vertices.

Usage of DrawPrimitiveUP D3DDevice method (for graph rendering).