playcanvas/build/playcanvas.dbg/src/scene/shader-lib/chunk-utils.js

PlayCanvas WebGL game engine

import { shaderChunks } from './chunks/chunks.js';

/**
 * @import { CameraShaderParams } from '../camera-shader-params.js'
 * @import { GraphicsDevice } from '../../platform/graphics/graphics-device.js'
 */ var decodeTable = {
    'linear': 'decodeLinear',
    'srgb': 'decodeGamma',
    'rgbm': 'decodeRGBM',
    'rgbe': 'decodeRGBE',
    'rgbp': 'decodeRGBP'
};
var encodeTable = {
    'linear': 'encodeLinear',
    'srgb': 'encodeGamma',
    'rgbm': 'encodeRGBM',
    'rgbe': 'encodeRGBE',
    'rgbp': 'encodeRGBP'
};
class ChunkUtils {
    // returns the name of the decode function for the texture encoding
    static decodeFunc(encoding) {
        return decodeTable[encoding] || 'decodeGamma';
    }
    static encodeFunc(encoding) {
        return encodeTable[encoding] || 'encodeGamma';
    }
    /**
     * Returns a screenDepth chunk configured for the given camera shader parameters.
     *
     * @param {GraphicsDevice} device - The graphics device.
     * @param {CameraShaderParams} cameraShaderParams - The camera shader parameters.
     * @returns {string} The screenDepth chunk.
     * @ignore
     */ static getScreenDepthChunk(device, cameraShaderParams) {
        return "\n            " + (cameraShaderParams.sceneDepthMapLinear ? '#define SCENE_DEPTHMAP_LINEAR' : '') + "\n            " + (device.textureFloatRenderable ? '#define SCENE_DEPTHMAP_FLOAT' : '') + "\n            " + shaderChunks.screenDepthPS + "\n        ";
    }
}

export { ChunkUtils };