BabylonJS/Spector.js

import { ParameterState, IParameter } from "../parameterState";
import { WebGlConstants } from "../../types/webglConstants";
import { ICommandCapture } from "../../../shared/capture/commandCapture";
import { drawCommands } from "../../utils/drawCommands";

export class CoverageState extends ParameterState {
    public static readonly stateName = "CoverageState";

    public get stateName(): string {
        return CoverageState.stateName;
    }

    protected getWebgl1Parameters(): IParameter[] {
        return [{ constant: WebGlConstants.SAMPLE_COVERAGE_VALUE, changeCommands: ["sampleCoverage"] },
        { constant: WebGlConstants.SAMPLE_COVERAGE_INVERT, changeCommands: ["sampleCoverage"] }];
    }

    protected getWebgl2Parameters(): IParameter[] {
        return [{ constant: WebGlConstants.SAMPLE_COVERAGE, changeCommands: ["enable", "disable"] },
        { constant: WebGlConstants.SAMPLE_ALPHA_TO_COVERAGE, changeCommands: ["enable", "disable"] }];
    }

    protected isValidChangeCommand(command: ICommandCapture, stateName: string): boolean {
        if (command.name === "enable" || command.name === "disable") {
            if (command.commandArguments[0] === WebGlConstants.SAMPLE_COVERAGE.value) {
                return stateName === WebGlConstants.SAMPLE_COVERAGE.name;
            }

            if (command.commandArguments[0] === WebGlConstants.SAMPLE_ALPHA_TO_COVERAGE.value) {
                return stateName === WebGlConstants.SAMPLE_ALPHA_TO_COVERAGE.name;
            }

            return false;
        }
        return true;
    }

    protected getConsumeCommands(): string[] {
        return drawCommands;
    }

    protected isStateEnable(stateName: string, args: IArguments): boolean {
        if (this.contextVersion === 2) {
            return this.context.isEnabled(WebGlConstants.SAMPLE_COVERAGE.value);
        }
        return false;
    }
}