'use strict';
exports.__esModule = true;
var _core = require('../../core');
var core = _interopRequireWildcard(_core);
var _ParticleShader = require('./ParticleShader');
var _ParticleShader2 = _interopRequireDefault(_ParticleShader);
var _ParticleBuffer = require('./ParticleBuffer');
var _ParticleBuffer2 = _interopRequireDefault(_ParticleBuffer);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
/**
* @author Mat Groves
*
* Big thanks to the very clever Matt DesLauriers <mattdesl> https://github.com/mattdesl/
* for creating the original pixi version!
* Also a thanks to https://github.com/bchevalier for tweaking the tint and alpha so that they now
* share 4 bytes on the vertex buffer
*
* Heavily inspired by LibGDX's ParticleRenderer:
* https://github.com/libgdx/libgdx/blob/master/gdx/src/com/badlogic/gdx/graphics/g2d/ParticleRenderer.java
*/
/**
*
* @class
* @private
* @memberof PIXI
*/
var ParticleRenderer = function (_core$ObjectRenderer) {
_inherits(ParticleRenderer, _core$ObjectRenderer);
/**
* @param {PIXI.WebGLRenderer} renderer - The renderer this sprite batch works for.
*/
function ParticleRenderer(renderer) {
_classCallCheck(this, ParticleRenderer);
// 65535 is max vertex index in the index buffer (see ParticleRenderer)
// so max number of particles is 65536 / 4 = 16384
// and max number of element in the index buffer is 16384 * 6 = 98304
// Creating a full index buffer, overhead is 98304 * 2 = 196Ko
// let numIndices = 98304;
/**
* The default shader that is used if a sprite doesn't have a more specific one.
*
* @member {PIXI.Shader}
*/
var _this = _possibleConstructorReturn(this, _core$ObjectRenderer.call(this, renderer));
_this.shader = null;
_this.indexBuffer = null;
_this.properties = null;
_this.tempMatrix = new core.Matrix();
_this.CONTEXT_UID = 0;
return _this;
}
/**
* When there is a WebGL context change
*
* @private
*/
ParticleRenderer.prototype.onContextChange = function onContextChange() {
var gl = this.renderer.gl;
this.CONTEXT_UID = this.renderer.CONTEXT_UID;
// setup default shader
this.shader = new _ParticleShader2.default(gl);
this.properties = [
// verticesData
{
attribute: this.shader.attributes.aVertexPosition,
size: 2,
uploadFunction: this.uploadVertices,
offset: 0
},
// positionData
{
attribute: this.shader.attributes.aPositionCoord,
size: 2,
uploadFunction: this.uploadPosition,
offset: 0
},
// rotationData
{
attribute: this.shader.attributes.aRotation,
size: 1,
uploadFunction: this.uploadRotation,
offset: 0
},
// uvsData
{
attribute: this.shader.attributes.aTextureCoord,
size: 2,
uploadFunction: this.uploadUvs,
offset: 0
},
// alphaData
{
attribute: this.shader.attributes.aColor,
size: 1,
uploadFunction: this.uploadAlpha,
offset: 0
}];
};
/**
* Starts a new particle batch.
*
*/
ParticleRenderer.prototype.start = function start() {
this.renderer.bindShader(this.shader);
};
/**
* Renders the particle container object.
*
* @param {PIXI.ParticleContainer} container - The container to render using this ParticleRenderer
*/
ParticleRenderer.prototype.render = function render(container) {
var children = container.children;
var maxSize = container._maxSize;
var batchSize = container._batchSize;
var renderer = this.renderer;
var totalChildren = children.length;
if (totalChildren === 0) {
return;
} else if (totalChildren > maxSize) {
totalChildren = maxSize;
}
var buffers = container._glBuffers[renderer.CONTEXT_UID];
if (!buffers) {
buffers = container._glBuffers[renderer.CONTEXT_UID] = this.generateBuffers(container);
}
// if the uvs have not updated then no point rendering just yet!
this.renderer.setBlendMode(container.blendMode);
var gl = renderer.gl;
var m = container.worldTransform.copy(this.tempMatrix);
m.prepend(renderer._activeRenderTarget.projectionMatrix);
this.shader.uniforms.projectionMatrix = m.toArray(true);
this.shader.uniforms.uAlpha = container.worldAlpha;
this.shader.uniforms.tint = container._tintRGB;
// make sure the texture is bound..
var baseTexture = children[0]._texture.baseTexture;
this.shader.uniforms.uSampler = renderer.bindTexture(baseTexture);
// now lets upload and render the buffers..
for (var i = 0, j = 0; i < totalChildren; i += batchSize, j += 1) {
var amount = totalChildren - i;
if (amount > batchSize) {
amount = batchSize;
}
var buffer = buffers[j];
// we always upload the dynamic
buffer.uploadDynamic(children, i, amount);
// we only upload the static content when we have to!
if (container._bufferToUpdate === j) {
buffer.uploadStatic(children, i, amount);
container._bufferToUpdate = j + 1;
}
// bind the buffer
renderer.bindVao(buffer.vao);
buffer.vao.draw(gl.TRIANGLES, amount * 6);
}
};
/**
* Creates one particle buffer for each child in the container we want to render and updates internal properties
*
* @param {PIXI.ParticleContainer} container - The container to render using this ParticleRenderer
* @return {PIXI.ParticleBuffer[]} The buffers
*/
ParticleRenderer.prototype.generateBuffers = function generateBuffers(container) {
var gl = this.renderer.gl;
var buffers = [];
var size = container._maxSize;
var batchSize = container._batchSize;
var dynamicPropertyFlags = container._properties;
for (var i = 0; i < size; i += batchSize) {
buffers.push(new _ParticleBuffer2.default(gl, this.properties, dynamicPropertyFlags, batchSize));
}
return buffers;
};
/**
* Uploads the verticies.
*
* @param {PIXI.DisplayObject[]} children - the array of display objects to render
* @param {number} startIndex - the index to start from in the children array
* @param {number} amount - the amount of children that will have their vertices uploaded
* @param {number[]} array - The vertices to upload.
* @param {number} stride - Stride to use for iteration.
* @param {number} offset - Offset to start at.
*/
ParticleRenderer.prototype.uploadVertices = function uploadVertices(children, startIndex, amount, array, stride, offset) {
var w0 = 0;
var w1 = 0;
var h0 = 0;
var h1 = 0;
for (var i = 0; i < amount; ++i) {
var sprite = children[startIndex + i];
var texture = sprite._texture;
var sx = sprite.scale.x;
var sy = sprite.scale.y;
var trim = texture.trim;
var orig = texture.orig;
if (trim) {
// if the sprite is trimmed and is not a tilingsprite then we need to add the
// extra space before transforming the sprite coords..
w1 = trim.x - sprite.anchor.x * orig.width;
w0 = w1 + trim.width;
h1 = trim.y - sprite.anchor.y * orig.height;
h0 = h1 + trim.height;
} else {
w0 = orig.width * (1 - sprite.anchor.x);
w1 = orig.width * -sprite.anchor.x;
h0 = orig.height * (1 - sprite.anchor.y);
h1 = orig.height * -sprite.anchor.y;
}
array[offset] = w1 * sx;
array[offset + 1] = h1 * sy;
array[offset + stride] = w0 * sx;
array[offset + stride + 1] = h1 * sy;
array[offset + stride * 2] = w0 * sx;
array[offset + stride * 2 + 1] = h0 * sy;
array[offset + stride * 3] = w1 * sx;
array[offset + stride * 3 + 1] = h0 * sy;
offset += stride * 4;
}
};
/**
*
* @param {PIXI.DisplayObject[]} children - the array of display objects to render
* @param {number} startIndex - the index to start from in the children array
* @param {number} amount - the amount of children that will have their positions uploaded
* @param {number[]} array - The vertices to upload.
* @param {number} stride - Stride to use for iteration.
* @param {number} offset - Offset to start at.
*/
ParticleRenderer.prototype.uploadPosition = function uploadPosition(children, startIndex, amount, array, stride, offset) {
for (var i = 0; i < amount; i++) {
var spritePosition = children[startIndex + i].position;
array[offset] = spritePosition.x;
array[offset + 1] = spritePosition.y;
array[offset + stride] = spritePosition.x;
array[offset + stride + 1] = spritePosition.y;
array[offset + stride * 2] = spritePosition.x;
array[offset + stride * 2 + 1] = spritePosition.y;
array[offset + stride * 3] = spritePosition.x;
array[offset + stride * 3 + 1] = spritePosition.y;
offset += stride * 4;
}
};
/**
*
* @param {PIXI.DisplayObject[]} children - the array of display objects to render
* @param {number} startIndex - the index to start from in the children array
* @param {number} amount - the amount of children that will have their rotation uploaded
* @param {number[]} array - The vertices to upload.
* @param {number} stride - Stride to use for iteration.
* @param {number} offset - Offset to start at.
*/
ParticleRenderer.prototype.uploadRotation = function uploadRotation(children, startIndex, amount, array, stride, offset) {
for (var i = 0; i < amount; i++) {
var spriteRotation = children[startIndex + i].rotation;
array[offset] = spriteRotation;
array[offset + stride] = spriteRotation;
array[offset + stride * 2] = spriteRotation;
array[offset + stride * 3] = spriteRotation;
offset += stride * 4;
}
};
/**
*
* @param {PIXI.DisplayObject[]} children - the array of display objects to render
* @param {number} startIndex - the index to start from in the children array
* @param {number} amount - the amount of children that will have their rotation uploaded
* @param {number[]} array - The vertices to upload.
* @param {number} stride - Stride to use for iteration.
* @param {number} offset - Offset to start at.
*/
ParticleRenderer.prototype.uploadUvs = function uploadUvs(children, startIndex, amount, array, stride, offset) {
for (var i = 0; i < amount; ++i) {
var textureUvs = children[startIndex + i]._texture._uvs;
if (textureUvs) {
array[offset] = textureUvs.x0;
array[offset + 1] = textureUvs.y0;
array[offset + stride] = textureUvs.x1;
array[offset + stride + 1] = textureUvs.y1;
array[offset + stride * 2] = textureUvs.x2;
array[offset + stride * 2 + 1] = textureUvs.y2;
array[offset + stride * 3] = textureUvs.x3;
array[offset + stride * 3 + 1] = textureUvs.y3;
offset += stride * 4;
} else {
// TODO you know this can be easier!
array[offset] = 0;
array[offset + 1] = 0;
array[offset + stride] = 0;
array[offset + stride + 1] = 0;
array[offset + stride * 2] = 0;
array[offset + stride * 2 + 1] = 0;
array[offset + stride * 3] = 0;
array[offset + stride * 3 + 1] = 0;
offset += stride * 4;
}
}
};
/**
*
* @param {PIXI.DisplayObject[]} children - the array of display objects to render
* @param {number} startIndex - the index to start from in the children array
* @param {number} amount - the amount of children that will have their rotation uploaded
* @param {number[]} array - The vertices to upload.
* @param {number} stride - Stride to use for iteration.
* @param {number} offset - Offset to start at.
*/
ParticleRenderer.prototype.uploadAlpha = function uploadAlpha(children, startIndex, amount, array, stride, offset) {
for (var i = 0; i < amount; i++) {
var spriteAlpha = children[startIndex + i].alpha;
array[offset] = spriteAlpha;
array[offset + stride] = spriteAlpha;
array[offset + stride * 2] = spriteAlpha;
array[offset + stride * 3] = spriteAlpha;
offset += stride * 4;
}
};
/**
* Destroys the ParticleRenderer.
*
*/
ParticleRenderer.prototype.destroy = function destroy() {
if (this.renderer.gl) {
this.renderer.gl.deleteBuffer(this.indexBuffer);
}
_core$ObjectRenderer.prototype.destroy.call(this);
this.shader.destroy();
this.indices = null;
this.tempMatrix = null;
};
return ParticleRenderer;
}(core.ObjectRenderer);
exports.default = ParticleRenderer;
core.WebGLRenderer.registerPlugin('particle', ParticleRenderer);
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