C++ to GLSL

[REDDemon]

Where can i find a good article that explains how to design a simple program in C++ and make the equivalent in GLSL? The problem is that in C++ i have the "new" for creating new objects. how can I do for example a tree without using "new"? (i know that there are limited variables in a shader, but i want to endup all those variables if necessary).
I'm trying to do that in glsl 1.0 / 1.2 so newer shading languages are not suitable for me. I know that there is no interest in video card vendors on supporting old languages, but i think somewhere there is someone that has worked on this problem.

I want also to query the variables on my graphics card how can i know how many floating points vectors or integer vectors can i use in a GLSL program?

I can't tell why i need it. But if i succed a opensource demo will be released.

[serengeor]

I can't tell why i need it.

I smell some secret project going on in your basement

I can't help you on this topic, I'm a complete noob at shaders

[REDDemon]

that's not secret. just want to be sure something is possible also in practice terms since theorically everything works. fast reply anyway!

i'm looking at old C tutorials for making tree structures without "objects" but i have some lack about full potential of old GLSL.

I think I need to create an array of structs, but i think there will be obviously some limit to the size of the arrays especially with big structs.

anyway i'm searching on some general tutorial about how to translate from c++ to glsl but there are no tutorials

[stefbuet]

Maybe this'll help you:
http://en.wikipedia.org/wiki/High_Level_Shader_Language

[nespa]

GLSL


http://www.lighthouse3d.com/opengl/glsl/

[hendu]

No dynamic memory on the gpu. glxinfo -l will tell you your card's limits, if you're on linux.

[hybrid]

Of course there's dynamic memory on the GPU. glTex2D will alloc the necessary array and assign it to the texture name. CUDA and OpenCL have similar calls, which are even called allocSomething.

[hendu]

I mean like "hey, the app told me I need an array of 1500 ints. I'll go and malloc/new/etc it". Last I checked gpus couldn't do dynamic allocation like that.

edit to clarify: graphics context. I don't know about GPGPU languages.

[REDDemon]

thanks, never thinked about of using a texture as an array. can I access texture data without using 2D sampler?