Josh Szepietowski - Software Developer - Game Designer
Invalid Tangram DS
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Invalid Tangram Screen Shot

Invalid Tangram DS is a port of Invalid Tangram to the Nintendo DS platform.

  • Makes full use of the 3D hardware to render large numbers of sprites.
  • Does other cool stuff
GRENDER - Shader Effects
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Invalid Tangram Screen Shot

GRENDER fully supports advanced shader effects.

  • FX, HLSL, and GLArbfp/GLArbvp support.
  • Parallax Mapping, Dot3 Cell Shading, and Normal Mapping with Gloss Map.
GRENDER - Advanced Terrain Level of Detail
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Invalid Tangram Screen Shot

GRENDER was used to implement this Advanced Terrain Level of Detail demo.

  • Uses chunked LOD for maximum performance and visual quality.
  • Heavily biased toward high detail areas to eliminate popping.
GScript Scripting Language
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Invalid Tangram Screen Shot

Custom scripting language and virtual machine.

  • Performance-tuned with JIT compiling.
  • C-Style syntax wtih type free variables.
GRENDER - Shooter Demo
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Invalid Tangram Screen Shot

GRENDER was used to implement this mini-demo.

  • Real time fluid surface dynamics.
  • Terrain system including integrated editor.
  • Optimized and extendable particle system.
GRENDER - Skeletal Character Animation
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Invalid Tangram Screen Shot

GRENDER supports skeletal character animation.

  • Both CPU and GPU (vertex shader) support.
  • Bones exported from 3DSMax with a custom exporter.
GRENDER - Quake BSP
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Invalid Tangram Screen Shot

GRENDER was used to implement Quake 1 BSP loading and rendering.

  • Performance optimized with PVS culling of geometry.
  • Light mapping support with a custom packing algorithm.
Invalid Tangram
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Invalid Tangram Screen Shot

Invalid Tangram is a 2D game that is part shooter and part puzzle.

  • One of four 2D programmer games picked to be shown at The Guildhall 2005 Winter Exhibition.
  • Custom XML formats for all data.