GLSL Programming

OpenGL Shading Language

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Fog with GLSL     Fog implementation using GLSL - Use of gl_FogFragCoord, gl_FragCoord, gl_FogCoord and gl_Fog variables.

How to bypass a Catalyst 7.11/7.12 GLSL Bug     This article shows a workaround of a GLSL bug present in the Catalyst drivers 7.11 and 7.12.

Mesh Deformers     Two examples of mesh deformers using the GPU: surface deformer and mesh twister.

The Art of Texturing using the GLSL     This tutorial shows the common techniques of texturing and their implementation with GLSL (simple and multtexturing, sphere mapping, dual paraboloid mapping, cube mapping, texture warping, projective texture mapping).

Vertex Displacement Mapping     Explanation of the vertex displacement mapping technique to deform a mesh using a texture look up from a vertex shader.

Normal-Map Compression     The problem of normal-map (or bump-map) compression and how to solve it (renormalization - swizzled-DXT5 - ATI 3Dc).

Lighting in GLSL - Phong Model     This article presents the Phong lighting model and its implementation in GLSL for point and spot lights.

The Mandelbrot Set: Colors of Infinity     Theory and implementation on GPU with GLSL of Mandelbrot fractal rendering. Introduction to GPGPU.

Image Filtering     Image filtering and GLSL filters implementation (convolution kernels).

Ambient Occlusion Lighting     Présentation of ambient occlusion lighting technique. Occlusion-maps creation. Ambient occlusion GLSL shader.

Bump Mapping     Bump mapping implementation using GLSL shader. Lighting equations. Tangent space.

Normal-maps     Presentation and creation of normal-maps (or bump-maps).

S3TC Texture Compression     Texture compression (S3TC - DXT1/5) and how use it in Demoniak3D.

Introduction to GLSL     This tutorial presents the basis about GLSL shading language. GLSL shader integration into Demoniak3D.