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+import { NodeMaterialBlock } from '../../nodeMaterialBlock';
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+import { NodeMaterialBlockConnectionPointTypes } from '../../Enums/nodeMaterialBlockConnectionPointTypes';
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+import { NodeMaterialBuildState } from '../../nodeMaterialBuildState';
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+import { NodeMaterialBlockTargets } from '../../Enums/nodeMaterialBlockTargets';
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+import { NodeMaterialConnectionPoint } from '../../nodeMaterialBlockConnectionPoint';
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+import { AbstractMesh } from '../../../../Meshes/abstractMesh';
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+import { NodeMaterialDefines } from '../../nodeMaterial';
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+import { InputBlock } from '../Input/inputBlock';
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+import { BaseTexture } from '../../../Textures/baseTexture';
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+import { Nullable } from '../../../../types';
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+import { _TypeStore } from '../../../../Misc/typeStore';
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+import { Texture } from '../../../Textures/texture';
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+import { Scene } from '../../../../scene';
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+
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+declare type NodeMaterial = import("../../nodeMaterial").NodeMaterial;
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+
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+/**
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+ * Base block used for the particle texture
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+ */
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+export class ParticleTextureBlock extends NodeMaterialBlock {
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+
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+ private _samplerName = "diffuseSampler";
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+ private _linearDefineName: string;
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+ private _gammaDefineName: string;
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+ private _tempTextureRead: string;
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+
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+ /**
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+ * Gets or sets the texture associated with the node
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+ */
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+ public texture: Nullable<BaseTexture>;
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+
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+ /**
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+ * Gets or sets a boolean indicating if content needs to be converted to gamma space
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+ */
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+ public convertToGammaSpace = false;
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+
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+ /**
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+ * Gets or sets a boolean indicating if content needs to be converted to linear space
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+ */
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+ public convertToLinearSpace = false;
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+
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+ /**
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+ * Create a new ParticleTextureBlock
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+ * @param name defines the block name
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+ */
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+ public constructor(name: string) {
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+ super(name, NodeMaterialBlockTargets.Fragment);
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+
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+ this._isUnique = true;
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+
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+ this.registerInput("uv", NodeMaterialBlockConnectionPointTypes.Vector2, false, NodeMaterialBlockTargets.VertexAndFragment);
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+
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+ this.registerOutput("rgba", NodeMaterialBlockConnectionPointTypes.Color4, NodeMaterialBlockTargets.Neutral);
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+ this.registerOutput("rgb", NodeMaterialBlockConnectionPointTypes.Color3, NodeMaterialBlockTargets.Neutral);
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+ this.registerOutput("r", NodeMaterialBlockConnectionPointTypes.Float, NodeMaterialBlockTargets.Neutral);
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+ this.registerOutput("g", NodeMaterialBlockConnectionPointTypes.Float, NodeMaterialBlockTargets.Neutral);
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+ this.registerOutput("b", NodeMaterialBlockConnectionPointTypes.Float, NodeMaterialBlockTargets.Neutral);
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+ this.registerOutput("a", NodeMaterialBlockConnectionPointTypes.Float, NodeMaterialBlockTargets.Neutral);
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+
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+ this._inputs[0].acceptedConnectionPointTypes.push(NodeMaterialBlockConnectionPointTypes.Vector3);
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+ this._inputs[0].acceptedConnectionPointTypes.push(NodeMaterialBlockConnectionPointTypes.Vector4);
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+ }
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+
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+ /**
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+ * Gets the current class name
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+ * @returns the class name
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+ */
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+ public getClassName() {
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+ return "ParticleTextureBlock";
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+ }
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+
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+ /**
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+ * Gets the uv input component
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+ */
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+ public get uv(): NodeMaterialConnectionPoint {
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+ return this._inputs[0];
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+ }
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+
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+ /**
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+ * Gets the rgba output component
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+ */
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+ public get rgba(): NodeMaterialConnectionPoint {
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+ return this._outputs[0];
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+ }
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+
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+ /**
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+ * Gets the rgb output component
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+ */
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+ public get rgb(): NodeMaterialConnectionPoint {
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+ return this._outputs[1];
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+ }
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+
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+ /**
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+ * Gets the r output component
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+ */
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+ public get r(): NodeMaterialConnectionPoint {
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+ return this._outputs[2];
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+ }
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+
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+ /**
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+ * Gets the g output component
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+ */
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+ public get g(): NodeMaterialConnectionPoint {
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+ return this._outputs[3];
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+ }
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+
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+ /**
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+ * Gets the b output component
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+ */
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+ public get b(): NodeMaterialConnectionPoint {
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+ return this._outputs[4];
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+ }
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+
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+ /**
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+ * Gets the a output component
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+ */
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+ public get a(): NodeMaterialConnectionPoint {
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+ return this._outputs[5];
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+ }
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+
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+ /**
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+ * Initialize the block and prepare the context for build
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+ * @param state defines the state that will be used for the build
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+ */
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+ public initialize(state: NodeMaterialBuildState) {
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+ state._excludeVariableName("diffuseSampler");
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+ }
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+
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+ public autoConfigure(material: NodeMaterial) {
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+ if (!this.uv.isConnected) {
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+ let uvInput = material.getInputBlockByPredicate((b) => b.isAttribute && b.name === "particle_uv");
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+
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+ if (!uvInput) {
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+ uvInput = new InputBlock("uv");
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+ uvInput.setAsAttribute("particle_uv");
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+ }
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+ uvInput.output.connectTo(this.uv);
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+ }
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+ }
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+
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+ public prepareDefines(mesh: AbstractMesh, nodeMaterial: NodeMaterial, defines: NodeMaterialDefines) {
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+ defines.setValue(this._linearDefineName, this.convertToGammaSpace, true);
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+ defines.setValue(this._gammaDefineName, this.convertToLinearSpace, true);
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+ }
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+
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+ public isReady() {
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+ if (this.texture && !this.texture.isReadyOrNotBlocking()) {
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+ return false;
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+ }
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+
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+ return true;
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+ }
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+
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+ private _writeOutput(state: NodeMaterialBuildState, output: NodeMaterialConnectionPoint, swizzle: string) {
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+ state.compilationString += `${this._declareOutput(output, state)} = ${this._tempTextureRead}.${swizzle};\r\n`;
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+
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+ state.compilationString += `#ifdef ${this._linearDefineName}\r\n`;
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+ state.compilationString += `${output.associatedVariableName} = toGammaSpace(${output.associatedVariableName});\r\n`;
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+ state.compilationString += `#endif\r\n`;
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+
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+ state.compilationString += `#ifdef ${this._gammaDefineName}\r\n`;
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+ state.compilationString += `${output.associatedVariableName} = toLinearSpace(${output.associatedVariableName});\r\n`;
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+ state.compilationString += `#endif\r\n`;
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+ }
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+
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+ protected _buildBlock(state: NodeMaterialBuildState) {
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+ super._buildBlock(state);
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+
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+ if (state.target === NodeMaterialBlockTargets.Vertex) {
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+ return;
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+ }
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+
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+ this._tempTextureRead = state._getFreeVariableName("tempTextureRead");
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+
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+ state._emit2DSampler(this._samplerName);
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+
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+ state.sharedData.blockingBlocks.push(this);
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+ state.sharedData.textureBlocks.push(this);
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+ state.sharedData.blocksWithDefines.push(this);
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+
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+ this._linearDefineName = state._getFreeDefineName("ISLINEAR");
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+ this._gammaDefineName = state._getFreeDefineName("ISGAMMA");
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+
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+ let comments = `//${this.name}`;
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+ state._emitFunctionFromInclude("helperFunctions", comments);
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+
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+ state.compilationString += `vec4 ${this._tempTextureRead} = texture2D(${this._samplerName}, ${this.uv.associatedVariableName});\r\n`;
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+
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+ for (var output of this._outputs) {
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+ if (output.hasEndpoints) {
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+ this._writeOutput(state, output, output.name);
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+ }
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+ }
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+
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+ return this;
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+ }
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+
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+ public serialize(): any {
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+ let serializationObject = super.serialize();
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+
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+ serializationObject.convertToGammaSpace = this.convertToGammaSpace;
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+ serializationObject.convertToLinearSpace = this.convertToLinearSpace;
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+ if (this.texture) {
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+ serializationObject.texture = this.texture.serialize();
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+ }
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+
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+ return serializationObject;
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+ }
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+
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+ public _deserialize(serializationObject: any, scene: Scene, rootUrl: string) {
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+ super._deserialize(serializationObject, scene, rootUrl);
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+
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+ this.convertToGammaSpace = serializationObject.convertToGammaSpace;
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+ this.convertToLinearSpace = !!serializationObject.convertToLinearSpace;
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+
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+ if (serializationObject.texture) {
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+ rootUrl = serializationObject.texture.url.indexOf("data:") === 0 ? "" : rootUrl;
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+ this.texture = Texture.Parse(serializationObject.texture, scene, rootUrl) as Texture;
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+ }
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+ }
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+}
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+
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+_TypeStore.RegisteredTypes["BABYLON.ParticleTextureBlock"] = ParticleTextureBlock;
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Popov72