Top "Shader" questions

Random / noise functions for GLSL

As the GPU driver vendors don't usually bother to implement noiseX in GLSL, I'm looking for a "graphics randomization swiss …

random shader glsl noise perlin-noise

What are Vertex and Pixel shaders?

What are Vertex and Pixel shaders? What is the difference between them? Which one is the best?

graphics shader terminology

What is state-of-the-art for text rendering in OpenGL as of version 4.1?

There are already a number of questions about text rendering in OpenGL, such as: How to do OpenGL live text-rendering …

opengl text glsl shader opengl-4

What is the correct file extension for GLSL shaders?

I'm learning glsl shading and I've come across different file formats. I've seen people giving their vertex and fragment shaders .…

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Creating a GLSL Arrays of Uniforms?

I would like to leave OpenGL's lights and make my own. I would like my shaders to allow for a …

arrays opengl glsl shader

Getting the true z value from the depth buffer

Sampling from a depth buffer in a shader returns values between 0 and 1, as expected. Given the near- and far- clip …

opengl graphics shader

How to calculate Tangent and Binormal?

Talking about bump mapping, specular highlight and these kind of things in OpenGL Shading Language (GLSL) I have: An array …

math opengl 3d glsl shader

How to get a "Glow" shader effect in OpenGL ES 2.0?

I'm writing a 3D app for iOS. I'm new to OpenGL ES 2.0, so I'm still getting myself around writing basic …

ios opengl-es glsl opengl-es-2.0 shader

Do conditional statements slow down shaders?

I want to know if "if-statements" inside shaders (vertex / fragment / pixel...) are really slowing down the shader performance. For example: …

opengl glsl shader direct3d hlsl

How do I get the current color of a fragment?

I'm trying to wrap my head around shaders in GLSL, and I've found some useful resources and tutorials, but I …

opengl shader glsl fragment-shader