2 replies to this topic

[vladic2000x]

Hi there, so I've been doing a little HLSL prrogramming with DirectX in recent years and now I'm trying the GLSL with OpenGL. One thing that strikes from the very beginning, is that I cannot find a decent description of the differences between the various versions of GLSL. As an example, the HLSL differences are laid out simply here:

http://en.wikipedia.org/wiki/High_Level_Shader_Language#Pixel_shader_comparison

Now when I try to google the same for GLSL, I just can't find a simple and understandable description of what are the limits of each version of GLSL and what new features have been introduced to each version. Does anybody has this information in a simply and easy to read layout? Also does anybody know what GLSL versions are on par with what HLSL version?

Thanks!

[max343]

Generally, GLSL 330 is on par with SM4 (maybe even 4_1, don't remember exactly), 420 is on par with SM5, while 430 is on par with SM5 including 11.1 features.

[TheChubu]

You have all sorts of information about OpenGL API and GLSL in OpenGL.org site.

http://www.opengl.org/documentation/glsl/

You can download the specs for every OpenGL version and check its "changes" sections, among other things.