Counting Uniforms

[xaero59]

Hello there,

I was looking for a way to count uniforms in Babylon.js and found this article that applies to webgl : link

 

I'm wondering how to adapt the code to work with babylon.js, I know that webgl is inside BABYLON.Engine._gl but what about "program" , since it's the shader it has to be defined somewhere , if someone could point me to it , I could adapt the function and post the code in this thread so it could provide additional tool to optimize babylon.js scenes.


Thanks !
 

 

 

 

[NasimiAsl]

hi and welcome

you most read Effect Class in here "Effect Ts" (for  adapt   code ) 

and some material shaders in here : https://github.com/BabylonJS/Babylon.js/tree/master/src/Shaders

[xaero59]

Awesome, thanks a lot !

Turns out everything I need is under engine , here is the code for those interested :

 

function getProgramInfo(engine) {


        var gl = engine._currentEffect._engine._gl;


        var program = engine._currentEffect._program;


    var result = {
            attributes: [],
            uniforms: [],
            attributeCount: 0,
            uniformCount: 0
        },
        activeUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS),
        activeAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);

    // Taken from the WebGl spec:
    // http://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14
    var enums = {
        0x8B50: 'FLOAT_VEC2',
        0x8B51: 'FLOAT_VEC3',
        0x8B52: 'FLOAT_VEC4',
        0x8B53: 'INT_VEC2',
        0x8B54: 'INT_VEC3',
        0x8B55: 'INT_VEC4',
        0x8B56: 'BOOL',
        0x8B57: 'BOOL_VEC2',
        0x8B58: 'BOOL_VEC3',
        0x8B59: 'BOOL_VEC4',
        0x8B5A: 'FLOAT_MAT2',
        0x8B5B: 'FLOAT_MAT3',
        0x8B5C: 'FLOAT_MAT4',
        0x8B5E: 'SAMPLER_2D',
        0x8B60: 'SAMPLER_CUBE',
        0x1400: 'BYTE',
        0x1401: 'UNSIGNED_BYTE',
        0x1402: 'SHORT',
        0x1403: 'UNSIGNED_SHORT',
        0x1404: 'INT',
        0x1405: 'UNSIGNED_INT',
        0x1406: 'FLOAT'
    };

    // Loop through active uniforms
    for (var i = 0; i < activeUniforms; i++) {
        var uniform = gl.getActiveUniform(program, i);
        uniform.typeName = enums[uniform.type];
        result.uniforms.push(uniform);
        result.uniformCount += uniform.size;
    }

    // Loop through active attributes
    for (var i = 0; i < activeAttributes; i++) {
        var attribute = gl.getActiveAttrib(program, i);
        attribute.typeName = enums[attribute.type];
        result.attributes.push(attribute);
        result.attributeCount += attribute.size;
    }

    return result;
}

 

engine is the object result of new BABYLON.Engine(canvas,true) so in the console, to get the data, one should type : console.table(getProgramInfo(your engine obj).uniforms)

[NasimiAsl]

what you want  wanna do it in OpenGL