How to pass sampler1d object to glsl program?

Scripting Issues
1

A large array (length > 8000) is required in my glsl shader. A simple array of uniform was too large for it as it would raise a compile error. Finally I found sampler1d might be a good solution.
The problem is, I don’t know how to pass a sampler1d object to shader program. I have tried Texture object but it tells me they are not matched.

2

Texture is the way to go, I’m using the following code to send an array of 4 floats as to my shader :

            texture = Texture()
            texture.setup_buffer_texture(len(data), Texture.T_float, Texture.F_rgba32, GeomEnums.UH_static)
            flattened_data = list(chain.from_iterable(data))
            raw_data = array("f", flattened_data)
            texture.set_ram_image(raw_data.tobytes())

If you need to only send one float, you can switch to F_r32 and skip the array flattening

However it’s preferable to use samplerBuffer in your GLSL code :

uniform samplerBuffer data_buffer;

...

vec4 data = texelFetch(data_buffer, index);
3

Thank you for helping!