wgpu-state.js

export function createState(config) {
    return {
        webgpu: {
            adapter: null,
            device: null,
            context: null,
            presentationFormat: null,
            pipeline: null,
            vertexBuffer: null,
            indexBuffer: null,
            uniformBuffer: null,
            texture: null,
            sampler: null,
            bindGroup: null,
            shaderCode: null,
            vertexSize: config.floatsPerVertex * config.vertexMultiplier,
            glyphCanvas: null
        },
        matrices: {
            uniformValues: new Float32Array(config.floatsInUniformBuffer),
            matrix: new Float32Array(config.matrixSize),
        },
        glyphs: {
            numGlyphs: 0,
            width: 0,
            height: 0,
        },
        canvas: document.querySelector('canvas') || document.body.appendChild(document.createElement('canvas')),
        timing: {
            time: 0,
            fixedDeltaTime: config.timing.fixedDeltaTime,
            maxFrameTime: config.timing.maxFrameTime,
            targetFps: config.timing.targetFps,
            frameDuration: config.timing.frameDuration,
            accumulator: 0,
            deltaTime: 0,
            currentTime: 0,
            frameTime: 0,
            lastTime: performance.now(),
        }
    };
}