add range mode for audio meter

[filiphanes]

Hi, I am trying to create audio meter similar to sound mixer in obs and other software: green, yellow, red.
In obs log there is shader compilation problem, but I dont see problem. Could you help me?

10:00:21.005: Error compiling shader:
10:00:21.005: ERROR: 0:35: Use of undeclared identifier 'vert'
10:00:21.005: ERROR: 0:37: Use of undeclared identifier 'vert'
10:00:21.005: 
10:00:21.005: 
10:00:21.005: device_pixelshader_create (GL) failed
10:00:21.005: Pass (0) <> missing pixel shader!
... other logs
10:00:21.112: effect_setval_inline: invalid param
10:00:21.112: No vertex shader specified
10:00:21.112: device_draw (GL) failed

Maybe I am not properly reinstalling new compilation?
Thanks

[filiphanes]

it works now, only conditions in shader needs to be correctly adjusted

[phandasm]

Assuming this is meant to work the way I think, you can just copy the gradient pixel shader to normalize the texture coordinate to the range [0, 1].
i.e. something like this:

float4 PSRange(VertGrad vert_in) : TARGET
{
    float4 color = float4(1.0, 0.0, 0.0, 1.0);  // Default to red

    float ratio = saturate((distance(vert_in.tex.y, grad_center) - grad_offset) / grad_height);
    if (ratio < 0.75)
        color = float4(0.0, 1.0, 0.0, 1.0);  // Green
    else if (ratio < 0.9)
        color = float4(1.0, 1.0, 0.0, 1.0);  // Yellow

    return color;
}

Shader vars are set here.
The gradient case pretty much does everything you need, except you probably want to set grad_height like this:

gs_effect_set_float(grad_height, cpos - channel_offset);

[filiphanes]

How do you debug shader faster than recompiling and reinstalling whole package and restarting obs?

[filiphanes]

ok, now I am happy with it, if you have any more ideas or expectations, I can update it

[phandasm]

Looks good, thanks!