cables_dev/cables/src/core/cgp/cgp_uniform.js

import CgTexture from "../cg/cg_texture.js";
import CgUniform from "../cg/cg_uniform.js";

export default class Uniform extends CgUniform
{
    constructor(__shader, __type, __name, _value, _port2, _port3, _port4, _structUniformName, _structName, _propertyName)
    {
        super(__shader, __type, __name, _value, _port2, _port3, _port4, _structUniformName, _structName, _propertyName);
        this._cgp = __shader._cgp;

        if (this.getType() == "t" && !_value) this._value = this._cgp.getEmptyTexture();

        this.gpuBuffer = null;
    }


    updateValueF() { }

    updateValueArrayF() {}

    setValueArrayF(v)
    {
        this.needsUpdate = true;
        this._value = v;
    }

    setValueF(v)
    {
        this.needsUpdate = true;
        this._value = v;
    }

    updateValue2F() { }

    setValue2F(v)
    {
        this.needsUpdate = true;
        this._value = v;
    }

    updateValue3F() { }

    setValue3F(v)
    {
        this.needsUpdate = true;
        this._value = v;
    }

    updateValue4F() { }

    setValue4F(v)
    {
        this.needsUpdate = true;
        this._value = v;
    }

    setValueT(v)
    {
        if (this._value != v)
            this._shader.needsPipelineUpdate = "texture changed"; // todo really needed ? change binding instead?

        this.needsUpdate = true;
        this._value = v;
    }

    updateValueM4(v) {}

    setValueM4(v)
    {
        this.needsUpdate = true;
        this._value = v;
    }

    setValueAny(v)
    {
        this.needsUpdate = true;
        this._value = v;
    }

    updateValueAny() {}

    updateValueT() {}


    setGpuBuffer(b)
    {
        this.gpuBuffer = b;
    }

    copyToBuffer(buff, pos = 0)
    {
        if (this._type == "f")
        {
            buff[pos] = this._value;
        }
        else if (this._type == "t")
        {
        }
        else if (this._type == "4f")
        {
            buff[pos] = this._value[0];
            buff[pos + 1] = this._value[1];
            buff[pos + 2] = this._value[2];
            buff[pos + 3] = this._value[3];
        }
        else if (this._type == "f[]")
        {
            for (let i = 0; i < this._value.length; i++)
                buff[pos + i] = this._value[i];
        }
        else if (this._type == "m4")
        {
            for (let i = 0; i < 16; i++)
                buff[pos + i] = this._value[i];
        }
        else
        {
            this._log.warn("uniform copy to buffer unknown", this._type);
        }
    }

    getSizeBytes()
    {
        const bytesPerFloat = 4;
        const bytesPerInt = 4;
        if (this._type == "t") return 4;
        if (this._type == "sampler") return 4;
        if (this._type == "f") return 1 * bytesPerFloat;
        if (this._type == "2f") return 2 * bytesPerFloat;
        if (this._type == "3f") return 3 * bytesPerFloat;
        if (this._type == "4f") return 4 * bytesPerFloat;
        if (this._type == "f[]") return this._value.length * bytesPerFloat;

        if (this._type == "m4") return 4 * 4 * bytesPerFloat;

        if (this._type == "i") return 1 * bytesPerInt;
        if (this._type == "2i") return 2 * bytesPerInt;

        this._log.warn("unknown type getSizeBytes", this._type);
        return 4;
    }
}